hack

--collapse will keep that directory collapsed and will not expand it.

.github/workflows/CICD.yml

@@ -22,56 +22,61 @@ jobs:
           - { os: macos-latest }
           - { os: windows-latest }
     steps:
-    - uses: actions/checkout@v1
-    - name: Initialize workflow variables
-      id: vars
-      shell: bash
-      run: |
-        # 'windows-latest' `cargo fmt` is bugged for this project (see reasons @ GH:rust-lang/rustfmt #3324, #3590, #3688 ; waiting for repair)
-        JOB_DO_FORMAT_TESTING="true"
-        case ${{ matrix.job.os }} in windows-latest) unset JOB_DO_FORMAT_TESTING ;; esac;
-        echo set-output name=JOB_DO_FORMAT_TESTING::${JOB_DO_FORMAT_TESTING:-<empty>/false}
-        echo ::set-output name=JOB_DO_FORMAT_TESTING::${JOB_DO_FORMAT_TESTING}
-        # target-specific options
-        # * CARGO_FEATURES_OPTION
-        CARGO_FEATURES_OPTION='' ;
-        if [ -n "${{ matrix.job.features }}" ]; then CARGO_FEATURES_OPTION='--features "${{ matrix.job.features }}"' ; fi
-        echo set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
-        echo ::set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
-    - name: Install `rust` toolchain
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: stable
-        override: true
-        profile: minimal # minimal component installation (ie, no documentation)
-        components: rustfmt, clippy
-    - name: "`fmt` testing"
-      if: steps.vars.outputs.JOB_DO_FORMAT_TESTING
-      uses: actions-rs/cargo@v1
-      with:
-        command: fmt
-        args: --all -- --check
-    - name: "`clippy` testing"
-      if: success() || failure() # run regardless of prior step ("`fmt` testing") success/failure
-      uses: actions-rs/cargo@v1
-      with:
-        command: clippy
-        args: ${{ matrix.job.cargo-options }} ${{ steps.vars.outputs.CARGO_FEATURES_OPTION }} -- -D warnings
+      - uses: actions/checkout@v1
+      - name: Initialize workflow variables
+        id: vars
+        shell: bash
+        run: |
+          # 'windows-latest' `cargo fmt` is bugged for this project (see reasons @ GH:rust-lang/rustfmt #3324, #3590, #3688 ; waiting for repair)
+          JOB_DO_FORMAT_TESTING="true"
+          case ${{ matrix.job.os }} in windows-latest) unset JOB_DO_FORMAT_TESTING ;; esac;
+          echo set-output name=JOB_DO_FORMAT_TESTING::${JOB_DO_FORMAT_TESTING:-<empty>/false}
+          echo ::set-output name=JOB_DO_FORMAT_TESTING::${JOB_DO_FORMAT_TESTING}
+          # target-specific options
+          # * CARGO_FEATURES_OPTION
+          CARGO_FEATURES_OPTION='' ;
+          if [ -n "${{ matrix.job.features }}" ]; then CARGO_FEATURES_OPTION='--features "${{ matrix.job.features }}"' ; fi
+          echo set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
+          echo ::set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
+      - name: Install `rust` toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          profile: minimal # minimal component installation (ie, no documentation)
+          components: rustfmt, clippy
+      - name: Install wget for Windows
+        if: matrix.job.os == 'windows-latest'
+        run: choco install wget --no-progress
+      - name: typos-action
+        uses: crate-ci/typos@v1.28.4
+      - name: "`fmt` testing"
+        if: steps.vars.outputs.JOB_DO_FORMAT_TESTING
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+      - name: "`clippy` testing"
+        if: success() || failure() # run regardless of prior step ("`fmt` testing") success/failure
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: ${{ matrix.job.cargo-options }} ${{ steps.vars.outputs.CARGO_FEATURES_OPTION }} -- -D warnings
 
   min_version:
     name: MinSRV # Minimum supported rust version
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-    - name: Install `rust` toolchain (v${{ env.RUST_MIN_SRV }})
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: ${{ env.RUST_MIN_SRV }}
-        profile: minimal # minimal component installation (ie, no documentation)
-    - name: Test
-      uses: actions-rs/cargo@v1
-      with:
-        command: test
+      - uses: actions/checkout@v1
+      - name: Install `rust` toolchain (v${{ env.RUST_MIN_SRV }})
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ env.RUST_MIN_SRV }}
+          profile: minimal # minimal component installation (ie, no documentation)
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
 
   build:
     name: Build
@@ -81,186 +86,223 @@ jobs:
       matrix:
         job:
           # { os, target, cargo-options, features, use-cross, toolchain }
-          - { os: ubuntu-latest  , target: arm-unknown-linux-gnueabihf , use-cross: use-cross }
-          - { os: ubuntu-20.04   , target: i686-unknown-linux-gnu      , use-cross: use-cross }
-          - { os: ubuntu-20.04   , target: i686-unknown-linux-musl     , use-cross: use-cross }
-          - { os: ubuntu-20.04   , target: x86_64-unknown-linux-gnu    , use-cross: use-cross }
-          - { os: ubuntu-20.04   , target: x86_64-unknown-linux-musl   , use-cross: use-cross }
-          - { os: ubuntu-18.04   , target: x86_64-unknown-linux-gnu    , use-cross: use-cross }
-          - { os: macos-latest   , target: x86_64-apple-darwin         }
-          - { os: windows-latest , target: i686-pc-windows-gnu         }
-          - { os: windows-latest , target: i686-pc-windows-msvc        }
-          - { os: windows-latest , target: x86_64-pc-windows-gnu       } ## !maint: [rivy; 2020-01-21] may break due to rust bug; follow possible solution from GH:rust-lang/rust#47048 (refs: GH:rust-lang/rust#47048 , GH:rust-lang/rust#53454 , GH:bike-barn/hermit#172 )
-          - { os: windows-latest , target: x86_64-pc-windows-msvc      }
+          - {
+              os: ubuntu-latest,
+              target: aarch64-unknown-linux-gnu,
+              use-cross: use-cross,
+            }
+          - {
+              os: ubuntu-latest,
+              target: aarch64-unknown-linux-musl,
+              use-cross: use-cross,
+            }
+          - {
+              os: ubuntu-latest,
+              target: arm-unknown-linux-gnueabihf,
+              use-cross: use-cross,
+            }
+          - {
+              os: ubuntu-latest,
+              target: arm-unknown-linux-musleabi,
+              use-cross: use-cross,
+            }
+          - {
+              os: ubuntu-latest,
+              target: i686-unknown-linux-gnu,
+              use-cross: use-cross,
+            }
+          - {
+              os: ubuntu-latest,
+              target: i686-unknown-linux-musl,
+              use-cross: use-cross,
+            }
+          - {
+              os: ubuntu-latest,
+              target: x86_64-unknown-linux-gnu,
+              use-cross: use-cross,
+            }
+          - {
+              os: ubuntu-latest,
+              target: x86_64-unknown-linux-musl,
+              use-cross: use-cross,
+            }
+          - { os: macos-latest, target: x86_64-apple-darwin }
+          - { os: windows-latest, target: i686-pc-windows-gnu }
+          - { os: windows-latest, target: i686-pc-windows-msvc }
+          - { os: windows-latest, target: x86_64-pc-windows-gnu } ## !maint: [rivy; 2020-01-21] may break due to rust bug; follow possible solution from GH:rust-lang/rust#47048 (refs: GH:rust-lang/rust#47048 , GH:rust-lang/rust#53454 , GH:bike-barn/hermit#172 )
+          - { os: windows-latest, target: x86_64-pc-windows-msvc }
     steps:
-    - uses: actions/checkout@v1
-    - name: Install any prerequisites
-      shell: bash
-      run: |
-        case ${{ matrix.job.target }} in
-          arm-unknown-linux-gnueabihf) sudo apt-get -y update ; sudo apt-get -y install gcc-arm-linux-gnueabihf ;;
-        esac
-    - name: Initialize workflow variables
-      id: vars
-      shell: bash
-      run: |
-        # toolchain
-        TOOLCHAIN="stable" ## default to "stable" toolchain
-        # * specify alternate TOOLCHAIN for *-pc-windows-gnu targets; gnu targets on Windows are broken for the standard *-pc-windows-msvc toolchain (refs: <https://github.com/rust-lang/rust/issues/47048>, <https://github.com/rust-lang/rust/issues/53454>, <https://github.com/rust-lang/cargo/issues/6754>)
-        case ${{ matrix.job.target }} in *-pc-windows-gnu) TOOLCHAIN="stable-${{ matrix.job.target }}" ;; esac;
-        # * use requested TOOLCHAIN if specified
-        if [ -n "${{ matrix.job.toolchain }}" ]; then TOOLCHAIN="${{ matrix.job.toolchain }}" ; fi
-        echo set-output name=TOOLCHAIN::${TOOLCHAIN}
-        echo ::set-output name=TOOLCHAIN::${TOOLCHAIN}
-        # staging directory
-        STAGING='_staging'
-        echo set-output name=STAGING::${STAGING}
-        echo ::set-output name=STAGING::${STAGING}
-        # determine EXE suffix
-        EXE_suffix="" ; case ${{ matrix.job.target }} in *-pc-windows-*) EXE_suffix=".exe" ;; esac;
-        echo set-output name=EXE_suffix::${EXE_suffix}
-        echo ::set-output name=EXE_suffix::${EXE_suffix}
-        # parse commit reference info
-        REF_NAME=${GITHUB_REF#refs/*/}
-        unset REF_BRANCH ; case ${GITHUB_REF} in refs/heads/*) REF_BRANCH=${GITHUB_REF#refs/heads/} ;; esac;
-        unset REF_TAG ; case ${GITHUB_REF} in refs/tags/*) REF_TAG=${GITHUB_REF#refs/tags/} ;; esac;
-        REF_SHAS=${GITHUB_SHA:0:8}
-        echo set-output name=REF_NAME::${REF_NAME}
-        echo set-output name=REF_BRANCH::${REF_BRANCH}
-        echo set-output name=REF_TAG::${REF_TAG}
-        echo set-output name=REF_SHAS::${REF_SHAS}
-        echo ::set-output name=REF_NAME::${REF_NAME}
-        echo ::set-output name=REF_BRANCH::${REF_BRANCH}
-        echo ::set-output name=REF_TAG::${REF_TAG}
-        echo ::set-output name=REF_SHAS::${REF_SHAS}
-        # parse target
-        unset TARGET_ARCH ; case ${{ matrix.job.target }} in arm-unknown-linux-gnueabihf) TARGET_ARCH=arm ;; i686-*) TARGET_ARCH=i686 ;; x86_64-*) TARGET_ARCH=x86_64 ;; esac;
-        echo set-output name=TARGET_ARCH::${TARGET_ARCH}
-        echo ::set-output name=TARGET_ARCH::${TARGET_ARCH}
-        unset TARGET_OS ; case ${{ matrix.job.target }} in *-linux-*) TARGET_OS=linux ;; *-apple-*) TARGET_OS=macos ;; *-windows-*) TARGET_OS=windows ;; esac;
-        echo set-output name=TARGET_OS::${TARGET_OS}
-        echo ::set-output name=TARGET_OS::${TARGET_OS}
-        # package name
-        PKG_suffix=".tar.gz" ; case ${{ matrix.job.target }} in *-pc-windows-*) PKG_suffix=".zip" ;; esac;
-        PKG_BASENAME=${PROJECT_NAME}-${REF_TAG:-$REF_SHAS}-${{ matrix.job.target }}
-        PKG_NAME=${PKG_BASENAME}${PKG_suffix}
-        echo set-output name=PKG_suffix::${PKG_suffix}
-        echo set-output name=PKG_BASENAME::${PKG_BASENAME}
-        echo set-output name=PKG_NAME::${PKG_NAME}
-        echo ::set-output name=PKG_suffix::${PKG_suffix}
-        echo ::set-output name=PKG_BASENAME::${PKG_BASENAME}
-        echo ::set-output name=PKG_NAME::${PKG_NAME}
-        # deployable tag? (ie, leading "vM" or "M"; M == version number)
-        unset DEPLOY ; if [[ $REF_TAG =~ ^[vV]?[0-9].* ]]; then DEPLOY='true' ; fi
-        echo set-output name=DEPLOY::${DEPLOY:-<empty>/false}
-        echo ::set-output name=DEPLOY::${DEPLOY}
-        # target-specific options
-        # * CARGO_FEATURES_OPTION
-        CARGO_FEATURES_OPTION='' ;
-        if [ -n "${{ matrix.job.features }}" ]; then CARGO_FEATURES_OPTION='--features "${{ matrix.job.features }}"' ; fi
-        echo set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
-        echo ::set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
-        # * CARGO_USE_CROSS (truthy)
-        CARGO_USE_CROSS='true' ; case '${{ matrix.job.use-cross }}' in ''|0|f|false|n|no) unset CARGO_USE_CROSS ;; esac;
-        echo set-output name=CARGO_USE_CROSS::${CARGO_USE_CROSS:-<empty>/false}
-        echo ::set-output name=CARGO_USE_CROSS::${CARGO_USE_CROSS}
-        # # * `arm` cannot be tested on ubuntu-* hosts (b/c testing is currently primarily done via comparison of target outputs with built-in outputs and the `arm` target is not executable on the host)
-        JOB_DO_TESTING="true"
-        case ${{ matrix.job.target }} in arm-*) unset JOB_DO_TESTING ;; esac;
-        echo set-output name=JOB_DO_TESTING::${JOB_DO_TESTING:-<empty>/false}
-        echo ::set-output name=JOB_DO_TESTING::${JOB_DO_TESTING}
-        # # * test only binary for arm-type targets
-        unset CARGO_TEST_OPTIONS
-        unset CARGO_TEST_OPTIONS ; case ${{ matrix.job.target }} in arm-*) CARGO_TEST_OPTIONS="--bin ${PROJECT_NAME}" ;; esac;
-        echo set-output name=CARGO_TEST_OPTIONS::${CARGO_TEST_OPTIONS}
-        echo ::set-output name=CARGO_TEST_OPTIONS::${CARGO_TEST_OPTIONS}
-        # * strip executable?
-        STRIP="strip" ; case ${{ matrix.job.target }} in arm-unknown-linux-gnueabihf) STRIP="arm-linux-gnueabihf-strip" ;; *-pc-windows-msvc) STRIP="" ;; esac;
-        echo set-output name=STRIP::${STRIP}
-        echo ::set-output name=STRIP::${STRIP}
-    - name: Create all needed build/work directories
-      shell: bash
-      run: |
-        mkdir -p '${{ steps.vars.outputs.STAGING }}'
-        mkdir -p '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}'
-    - name: rust toolchain ~ install
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: ${{ steps.vars.outputs.TOOLCHAIN }}
-        target: ${{ matrix.job.target }}
-        override: true
-        profile: minimal # minimal component installation (ie, no documentation)
-    - name: Info
-      shell: bash
-      run: |
-        gcc --version || true
-        rustup -V
-        rustup toolchain list
-        rustup default
-        cargo -V
-        rustc -V
-    - name: Build
-      uses: actions-rs/cargo@v1
-      with:
-        use-cross: ${{ steps.vars.outputs.CARGO_USE_CROSS }}
-        command: build
-        args: --release --target=${{ matrix.job.target }} ${{ matrix.job.cargo-options }} ${{ steps.vars.outputs.CARGO_FEATURES_OPTION }}
-    - name: Install cargo-deb
-      uses: actions-rs/cargo@v1
-      with:
+      - uses: actions/checkout@v1
+      - name: Install any prerequisites
+        shell: bash
+        run: |
+          case ${{ matrix.job.target }} in
+            arm-unknown-linux-gnueabihf) sudo apt-get -y update ; sudo apt-get -y install gcc-arm-linux-gnueabihf ;;
+            aarch64-unknown-linux-gnu) sudo apt-get -y update ; sudo apt-get -y install binutils-aarch64-linux-gnu ;;
+          esac
+      - name: Initialize workflow variables
+        id: vars
+        shell: bash
+        run: |
+          # toolchain
+          TOOLCHAIN="stable" ## default to "stable" toolchain
+          # * specify alternate TOOLCHAIN for *-pc-windows-gnu targets; gnu targets on Windows are broken for the standard *-pc-windows-msvc toolchain (refs: <https://github.com/rust-lang/rust/issues/47048>, <https://github.com/rust-lang/rust/issues/53454>, <https://github.com/rust-lang/cargo/issues/6754>)
+          case ${{ matrix.job.target }} in *-pc-windows-gnu) TOOLCHAIN="stable-${{ matrix.job.target }}" ;; esac;
+          # * use requested TOOLCHAIN if specified
+          if [ -n "${{ matrix.job.toolchain }}" ]; then TOOLCHAIN="${{ matrix.job.toolchain }}" ; fi
+          echo set-output name=TOOLCHAIN::${TOOLCHAIN}
+          echo ::set-output name=TOOLCHAIN::${TOOLCHAIN}
+          # staging directory
+          STAGING='_staging'
+          echo set-output name=STAGING::${STAGING}
+          echo ::set-output name=STAGING::${STAGING}
+          # determine EXE suffix
+          EXE_suffix="" ; case ${{ matrix.job.target }} in *-pc-windows-*) EXE_suffix=".exe" ;; esac;
+          echo set-output name=EXE_suffix::${EXE_suffix}
+          echo ::set-output name=EXE_suffix::${EXE_suffix}
+          # parse commit reference info
+          REF_NAME=${GITHUB_REF#refs/*/}
+          unset REF_BRANCH ; case ${GITHUB_REF} in refs/heads/*) REF_BRANCH=${GITHUB_REF#refs/heads/} ;; esac;
+          unset REF_TAG ; case ${GITHUB_REF} in refs/tags/*) REF_TAG=${GITHUB_REF#refs/tags/} ;; esac;
+          REF_SHAS=${GITHUB_SHA:0:8}
+          echo set-output name=REF_NAME::${REF_NAME}
+          echo set-output name=REF_BRANCH::${REF_BRANCH}
+          echo set-output name=REF_TAG::${REF_TAG}
+          echo set-output name=REF_SHAS::${REF_SHAS}
+          echo ::set-output name=REF_NAME::${REF_NAME}
+          echo ::set-output name=REF_BRANCH::${REF_BRANCH}
+          echo ::set-output name=REF_TAG::${REF_TAG}
+          echo ::set-output name=REF_SHAS::${REF_SHAS}
+          # parse target
+          unset TARGET_ARCH ; case ${{ matrix.job.target }} in arm-unknown-linux-gnueabihf) TARGET_ARCH=arm ;; aarch-*) TARGET_ARCH=aarch64 ;; i686-*) TARGET_ARCH=i686 ;; x86_64-*) TARGET_ARCH=x86_64 ;; esac;
+          echo set-output name=TARGET_ARCH::${TARGET_ARCH}
+          echo ::set-output name=TARGET_ARCH::${TARGET_ARCH}
+          unset TARGET_OS ; case ${{ matrix.job.target }} in *-linux-*) TARGET_OS=linux ;; *-apple-*) TARGET_OS=macos ;; *-windows-*) TARGET_OS=windows ;; esac;
+          echo set-output name=TARGET_OS::${TARGET_OS}
+          echo ::set-output name=TARGET_OS::${TARGET_OS}
+          # package name
+          PKG_suffix=".tar.gz" ; case ${{ matrix.job.target }} in *-pc-windows-*) PKG_suffix=".zip" ;; esac;
+          PKG_BASENAME=${PROJECT_NAME}-${REF_TAG:-$REF_SHAS}-${{ matrix.job.target }}
+          PKG_NAME=${PKG_BASENAME}${PKG_suffix}
+          echo set-output name=PKG_suffix::${PKG_suffix}
+          echo set-output name=PKG_BASENAME::${PKG_BASENAME}
+          echo set-output name=PKG_NAME::${PKG_NAME}
+          echo ::set-output name=PKG_suffix::${PKG_suffix}
+          echo ::set-output name=PKG_BASENAME::${PKG_BASENAME}
+          echo ::set-output name=PKG_NAME::${PKG_NAME}
+          # deployable tag? (ie, leading "vM" or "M"; M == version number)
+          unset DEPLOY ; if [[ $REF_TAG =~ ^[vV]?[0-9].* ]]; then DEPLOY='true' ; fi
+          echo set-output name=DEPLOY::${DEPLOY:-<empty>/false}
+          echo ::set-output name=DEPLOY::${DEPLOY}
+          # target-specific options
+          # * CARGO_FEATURES_OPTION
+          CARGO_FEATURES_OPTION='' ;
+          if [ -n "${{ matrix.job.features }}" ]; then CARGO_FEATURES_OPTION='--features "${{ matrix.job.features }}"' ; fi
+          echo set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
+          echo ::set-output name=CARGO_FEATURES_OPTION::${CARGO_FEATURES_OPTION}
+          # * CARGO_USE_CROSS (truthy)
+          CARGO_USE_CROSS='true' ; case '${{ matrix.job.use-cross }}' in ''|0|f|false|n|no) unset CARGO_USE_CROSS ;; esac;
+          echo set-output name=CARGO_USE_CROSS::${CARGO_USE_CROSS:-<empty>/false}
+          echo ::set-output name=CARGO_USE_CROSS::${CARGO_USE_CROSS}
+          # # * `arm` cannot be tested on ubuntu-* hosts (b/c testing is currently primarily done via comparison of target outputs with built-in outputs and the `arm` target is not executable on the host)
+          JOB_DO_TESTING="true"
+          case ${{ matrix.job.target }} in arm-*|aarch64-*) unset JOB_DO_TESTING ;; esac;
+          echo set-output name=JOB_DO_TESTING::${JOB_DO_TESTING:-<empty>/false}
+          echo ::set-output name=JOB_DO_TESTING::${JOB_DO_TESTING}
+          # # * test only binary for arm-type targets
+          unset CARGO_TEST_OPTIONS
+          unset CARGO_TEST_OPTIONS ; case ${{ matrix.job.target }} in arm-*|aarch64-*) CARGO_TEST_OPTIONS="--bin ${PROJECT_NAME}" ;; esac;
+          echo set-output name=CARGO_TEST_OPTIONS::${CARGO_TEST_OPTIONS}
+          echo ::set-output name=CARGO_TEST_OPTIONS::${CARGO_TEST_OPTIONS}
+          # * strip executable?
+          STRIP="strip" ; case ${{ matrix.job.target }} in arm-unknown-linux-gnueabihf) STRIP="arm-linux-gnueabihf-strip" ;; *-pc-windows-msvc) STRIP="" ;; aarch64-unknown-linux-gnu) STRIP="aarch64-linux-gnu-strip" ;; aarch64-unknown-linux-musl) STRIP="" ;; armv7-unknown-linux-musleabi) STRIP="" ;; arm-unknown-linux-musleabi) STRIP="" ;; esac;
+
+
+          echo set-output name=STRIP::${STRIP}
+          echo ::set-output name=STRIP::${STRIP}
+      - name: Create all needed build/work directories
+        shell: bash
+        run: |
+          mkdir -p '${{ steps.vars.outputs.STAGING }}'
+          mkdir -p '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}'
+      - name: rust toolchain ~ install
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ steps.vars.outputs.TOOLCHAIN }}
+          target: ${{ matrix.job.target }}
+          override: true
+          profile: minimal # minimal component installation (ie, no documentation)
+      - name: Info
+        shell: bash
+        run: |
+          gcc --version || true
+          rustup -V
+          rustup toolchain list
+          rustup default
+          cargo -V
+          rustc -V
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          use-cross: ${{ steps.vars.outputs.CARGO_USE_CROSS }}
+          command: build
+          args: --release --target=${{ matrix.job.target }} ${{ matrix.job.cargo-options }} ${{ steps.vars.outputs.CARGO_FEATURES_OPTION }}
+      - name: Install cargo-deb
+        uses: actions-rs/cargo@v1
+        with:
           command: install
           args: cargo-deb
-      if: ${{ contains(matrix.job.target, 'musl') }}
-    - name: Build deb
-      uses: actions-rs/cargo@v1
-      with:
+        if: matrix.job.target == 'i686-unknown-linux-musl' || matrix.job.target == 'x86_64-unknown-linux-musl'
+      - name: Build deb
+        uses: actions-rs/cargo@v1
+        with:
           command: deb
           args: --no-build --target=${{ matrix.job.target }}
-      if: ${{ contains(matrix.job.target, 'musl') }}
-    - name: Test
-      uses: actions-rs/cargo@v1
-      with:
-        use-cross: ${{ steps.vars.outputs.CARGO_USE_CROSS }}
-        command: test
-        args: --target=${{ matrix.job.target }} ${{ steps.vars.outputs.CARGO_TEST_OPTIONS}} ${{ matrix.job.cargo-options }} ${{ steps.vars.outputs.CARGO_FEATURES_OPTION }}
-    - name: Archive executable artifacts
-      uses: actions/upload-artifact@master
-      with:
-        name: ${{ env.PROJECT_NAME }}-${{ matrix.job.target }}
-        path: target/${{ matrix.job.target }}/release/${{ env.PROJECT_NAME }}${{ steps.vars.outputs.EXE_suffix }}
-    - name: Archive deb artifacts
-      uses: actions/upload-artifact@master
-      with:
-        name: ${{ env.PROJECT_NAME }}-${{ matrix.job.target }}.deb
-        path: target/${{ matrix.job.target }}/debian
-      if: ${{ contains(matrix.job.target, 'musl') }}
-    - name: Package
-      shell: bash
-      run: |
-        # binary
-        cp 'target/${{ matrix.job.target }}/release/${{ env.PROJECT_NAME }}${{ steps.vars.outputs.EXE_suffix }}' '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/'
-        # `strip` binary (if needed)
-        if [ -n "${{ steps.vars.outputs.STRIP }}" ]; then "${{ steps.vars.outputs.STRIP }}" '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/${{ env.PROJECT_NAME }}${{ steps.vars.outputs.EXE_suffix }}' ; fi
-        # README and LICENSE
-        cp README.md '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/'
-        cp LICENSE '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/'
-        # base compressed package
-        pushd '${{ steps.vars.outputs.STAGING }}/' >/dev/null
-        case ${{ matrix.job.target }} in
-          *-pc-windows-*) 7z -y a '${{ steps.vars.outputs.PKG_NAME }}' '${{ steps.vars.outputs.PKG_BASENAME }}'/* | tail -2 ;;
-          *) tar czf '${{ steps.vars.outputs.PKG_NAME }}' '${{ steps.vars.outputs.PKG_BASENAME }}'/* ;;
-        esac;
-        popd >/dev/null
-    - name: Publish
-      uses: softprops/action-gh-release@v1
-      if: steps.vars.outputs.DEPLOY
-      with:
-        files: |
-          ${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_NAME }}
-          target/${{ matrix.job.target }}/debian/*.deb
+        if: matrix.job.target == 'i686-unknown-linux-musl' || matrix.job.target == 'x86_64-unknown-linux-musl'
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          use-cross: ${{ steps.vars.outputs.CARGO_USE_CROSS }}
+          command: test
+          args: --target=${{ matrix.job.target }} ${{ steps.vars.outputs.CARGO_TEST_OPTIONS}} ${{ matrix.job.cargo-options }} ${{ steps.vars.outputs.CARGO_FEATURES_OPTION }}
+      - name: Archive executable artifacts
+        uses: actions/upload-artifact@master
+        with:
+          name: ${{ env.PROJECT_NAME }}-${{ matrix.job.target }}
+          path: target/${{ matrix.job.target }}/release/${{ env.PROJECT_NAME }}${{ steps.vars.outputs.EXE_suffix }}
+      - name: Archive deb artifacts
+        uses: actions/upload-artifact@master
+        with:
+          name: ${{ env.PROJECT_NAME }}-${{ matrix.job.target }}.deb
+          path: target/${{ matrix.job.target }}/debian
+        if: matrix.job.target == 'i686-unknown-linux-musl' || matrix.job.target == 'x86_64-unknown-linux-musl'
+      - name: Package
+        shell: bash
+        run: |
+          # binary
+          cp 'target/${{ matrix.job.target }}/release/${{ env.PROJECT_NAME }}${{ steps.vars.outputs.EXE_suffix }}' '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/'
+          # `strip` binary (if needed)
+          if [ -n "${{ steps.vars.outputs.STRIP }}" ]; then "${{ steps.vars.outputs.STRIP }}" '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/${{ env.PROJECT_NAME }}${{ steps.vars.outputs.EXE_suffix }}' ; fi
+          # README and LICENSE
+          cp README.md '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/'
+          cp LICENSE '${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_BASENAME }}/'
+          # base compressed package
+          pushd '${{ steps.vars.outputs.STAGING }}/' >/dev/null
+          case ${{ matrix.job.target }} in
+            *-pc-windows-*) 7z -y a '${{ steps.vars.outputs.PKG_NAME }}' '${{ steps.vars.outputs.PKG_BASENAME }}'/* | tail -2 ;;
+            *) tar czf '${{ steps.vars.outputs.PKG_NAME }}' '${{ steps.vars.outputs.PKG_BASENAME }}'/* ;;
+          esac;
+          popd >/dev/null
+      - name: Publish
+        uses: softprops/action-gh-release@v1
+        if: steps.vars.outputs.DEPLOY
+        with:
+          files: |
+            ${{ steps.vars.outputs.STAGING }}/${{ steps.vars.outputs.PKG_NAME }}
+            target/${{ matrix.job.target }}/debian/*.deb
 
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   ## fix! [rivy; 2020-22-01] `cargo tarpaulin` is unable to test this repo at the moment; alternate recipe or another testing framework?
   # coverage:

.gitignore

@@ -6,4 +6,7 @@
 **/*.rs.bk
 *.swp
 .vscode/*
-*.idea/*
+*.idea/*
+
+#ignore macos files
+.DS_Store

.pre-commit-config.yaml

@@ -0,0 +1,11 @@
+repos:
+  - repo: https://github.com/doublify/pre-commit-rust
+    rev: v1.0
+    hooks:
+      - id: cargo-check
+        stages: [commit]
+      - id: fmt
+        stages: [commit]
+      - id: clippy
+        args: [--all-targets, --all-features]
+        stages: [commit]

Cargo.toml

@@ -1,9 +1,9 @@
 [package]
 name = "du-dust"
 description = "A more intuitive version of du"
-version = "0.7.5"
+version = "1.1.1"
 authors = ["bootandy <bootandy@gmail.com>", "nebkor <code@ardent.nebcorp.com>"]
-edition = "2018"
+edition = "2021"
 readme = "README.md"
 
 documentation = "https://github.com/bootandy/dust"
@@ -21,34 +21,81 @@ travis-ci = { repository = "https://travis-ci.org/bootandy/dust" }
 name = "dust"
 path = "src/main.rs"
 
+[profile.release]
+codegen-units = 1
+lto = true
+strip = true
+
 [dependencies]
 ansi_term = "0.12"
-clap = { version = "=3", features=["cargo"] }
-lscolors = "0.7"
-terminal_size = "0.1"
+clap = "4.4"
+lscolors = "0.13"
+terminal_size = "0.2"
 unicode-width = "0.1"
-rayon="1"
+rayon = "1"
 thousands = "0.2"
 stfu8 = "0.2"
 regex = "1"
+config-file = "0.2"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+directories = "4"
+sysinfo = "0.27"
+ctrlc = "3.4"
+chrono = "0.4"
+
+[target.'cfg(not(target_has_atomic = "64"))'.dependencies]
+portable-atomic = "1.4"
 
 [target.'cfg(windows)'.dependencies]
 winapi-util = "0.1"
+filesize = "0.2.0"
 
 [dev-dependencies]
-assert_cmd = "1"
+assert_cmd = "2"
 tempfile = "=3"
 
+[build-dependencies]
+clap = "4.4"
+clap_complete = "4.4"
+clap_mangen = "0.2"
+
 [[test]]
 name = "integration"
 path = "tests/tests.rs"
 
+[package.metadata.binstall]
+pkg-url = "{ repo }/releases/download/v{ version }/dust-v{ version }-{ target }{ archive-suffix }"
+bin-dir = "dust-v{ version }-{ target }/{ bin }{ binary-ext }"
+
 [package.metadata.deb]
 section = "utils"
 assets = [
-  ["target/release/dust", "usr/bin/", "755"],
-  ["LICENSE", "usr/share/doc/du-dust/", "644"],
-  ["README.md", "usr/share/doc/du-dust/README", "644"],
+  [
+    "target/release/dust",
+    "usr/bin/",
+    "755",
+  ],
+  [
+    "LICENSE",
+    "usr/share/doc/du-dust/",
+    "644",
+  ],
+  [
+    "README.md",
+    "usr/share/doc/du-dust/README",
+    "644",
+  ],
+  [
+    "man-page/dust.1",
+    "usr/share/man/man1/dust.1",
+    "644",
+  ],
+  [
+    "completions/dust.bash",
+    "usr/share/bash-completion/completions/dust",
+    "644",
+  ],
 ]
 extended-description = """\
 Dust is meant to give you an instant overview of which directories are using

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright [2023] [andrew boot]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.md

@@ -1,5 +1,5 @@
+[![Build Status](https://github.com/bootandy/dust/actions/workflows/CICD.yml/badge.svg)](https://github.com/bootandy/dust/actions)
 
-[![Build Status](https://travis-ci.org/bootandy/dust.svg?branch=master)](https://travis-ci.org/bootandy/dust)
 
 # Dust
 
@@ -10,35 +10,56 @@ du + rust = dust. Like du but more intuitive.
 Because I want an easy way to see where my disk is being used.
 
 # Demo
+
 ![Example](media/snap.png)
 
 ## Install
 
 #### Cargo <a href="https://repology.org/project/du-dust/versions"><img src="https://repology.org/badge/vertical-allrepos/du-dust.svg" alt="Packaging status" align="right"></a>
 
-* `cargo install du-dust`
+- `cargo install du-dust`
 
 #### 🍺 Homebrew (Mac OS)
 
-* `brew install dust`
+- `brew install dust`
 
 #### 🍺 Homebrew (Linux)
 
-* `brew tap tgotwig/linux-dust && brew install dust`
+- `brew install dust`
+
+#### [Snap](https://ubuntu.com/core/services/guide/snaps-intro) Ubuntu and [supported systems](https://snapcraft.io/docs/installing-snapd)
+
+- `snap install dust`
+
+Note: `dust` installed through `snap` can only access files stored in the `/home` directory. See daniejstriata/dust-snap#2 for more information.
 
 #### [Pacstall](https://github.com/pacstall/pacstall) (Debian/Ubuntu)
 
-* `pacstall -I dust-bin`
+- `pacstall -I dust-bin`
+
+#### Anaconda (conda-forge)
+
+- `conda install -c conda-forge dust`
+
+#### [deb-get](https://github.com/wimpysworld/deb-get) (Debian/Ubuntu)
+
+- `deb-get install du-dust`
+
+#### [x-cmd](https://www.x-cmd.com/pkg/#VPContent)
+
+- `x env use dust`
 
 #### Windows:
-* Windows GNU version - works
-* Windows MSVC - requires: VCRUNTIME140.dll
+
+- `scoop install dust`
+- Windows GNU version - works
+- Windows MSVC - requires: [VCRUNTIME140.dll](https://docs.microsoft.com/en-gb/cpp/windows/latest-supported-vc-redist?view=msvc-170)
 
 #### Download
 
-* Download Linux/Mac binary from [Releases](https://github.com/bootandy/dust/releases)
-* unzip file: `tar -xvf _downloaded_file.tar.gz`
-* move file to executable path: `sudo mv dust /usr/local/bin/`
+- Download Linux/Mac binary from [Releases](https://github.com/bootandy/dust/releases)
+- unzip file: `tar -xvf _downloaded_file.tar.gz`
+- move file to executable path: `sudo mv dust /usr/local/bin/`
 
 ## Overview
 
@@ -56,27 +77,51 @@ Usage: dust <dir>
 Usage: dust <dir>  <another_dir> <and_more>
 Usage: dust -p (full-path - Show fullpath of the subdirectories)
 Usage: dust -s (apparent-size - shows the length of the file as opposed to the amount of disk space it uses)
-Usage: dust -n 30 (shows 30 directories instead of the default [default is terminal height])
-Usage: dust -d 3  (shows 3 levels of subdirectories)
-Usage: dust -r  (reverse order of output)
+Usage: dust -n 30  (Shows 30 directories instead of the default [default is terminal height])
+Usage: dust -d 3  (Shows 3 levels of subdirectories)
+Usage: dust -D (Show only directories (eg dust -D))
+Usage: dust -F (Show only files - finds your largest files)
+Usage: dust -r (reverse order of output)
+Usage: dust -o si/b/kb/kib/mb/mib/gb/gib (si - prints sizes in powers of 1000. Others print size in that format).
 Usage: dust -X ignore  (ignore all files and directories with the name 'ignore')
-Usage: dust -x (only show directories on the same filesystem)
-Usage: dust -b (do not show percentages or draw ASCII bars)
-Usage: dust -i (do not show hidden files)
+Usage: dust -x (Only show directories on the same filesystem)
+Usage: dust -b (Do not show percentages or draw ASCII bars)
+Usage: dust -B (--bars-on-right - Percent bars moved to right side of screen)
+Usage: dust -i (Do not show hidden files)
 Usage: dust -c (No colors [monochrome])
+Usage: dust -C (Force colors)
 Usage: dust -f (Count files instead of diskspace)
-Usage: dust -t Group by filetype
-Usage: dust -e regex Only include files matching this regex (eg dust -e "\.png$" would match png files)
+Usage: dust -t (Group by filetype)
+Usage: dust -z 10M (min-size, Only include files larger than 10M)
+Usage: dust -e regex (Only include files matching this regex (eg dust -e "\.png$" would match png files))
+Usage: dust -v regex (Exclude files matching this regex (eg dust -v "\.png$" would ignore png files))
+Usage: dust -L (dereference-links - Treat sym links as directories and go into them)
+Usage: dust -P (Disable the progress indicator)
+Usage: dust -R (For screen readers. Removes bars/symbols. Adds new column: depth level. (May want to use -p for full path too))
+Usage: dust -S (Custom Stack size - Use if you see: 'fatal runtime error: stack overflow' (default allocation: low memory=1048576, high memory=1073741824)"),
+Usage: dust --skip-total (No total row will be displayed)
+Usage: dust -z 40000/30MB/20kib (Exclude output files/directories below size 40000 bytes / 30MB / 20KiB)
+Usage: dust -j (Prints JSON representation of directories, try: dust -j  | jq)
+Usage: dust --files0-from=FILE (Reads null-terminated file paths from FILE); If FILE is - then read from stdin
+Usage: dust --collapse=node-modules will keep the node-modules folder collapsed in display instead of recursively opening it
 ```
 
+## Config file
+
+Dust has a config file where the above options can be set.
+Either: `~/.config/dust/config.toml` or `~/.dust.toml`
+```
+$ cat ~/.config/dust/config.toml
+reverse=true
+```
 
 ## Alternatives
 
-* [NCDU](https://dev.yorhel.nl/ncdu)
-* [dutree](https://github.com/nachoparker/dutree)
-* [dua](https://github.com/Byron/dua-cli/)
-* [pdu](https://github.com/KSXGitHub/parallel-disk-usage)
-* [dirstat-rs](https://github.com/scullionw/dirstat-rs)
-* du -d 1 -h | sort -h
+- [NCDU](https://dev.yorhel.nl/ncdu)
+- [dutree](https://github.com/nachoparker/dutree)
+- [dua](https://github.com/Byron/dua-cli/)
+- [pdu](https://github.com/KSXGitHub/parallel-disk-usage)
+- [dirstat-rs](https://github.com/scullionw/dirstat-rs)
+- du -d 1 -h | sort -h
 
 Note: Apparent-size is calculated slightly differently in dust to gdu. In dust each hard link is counted as using file_length space. In gdu only the first entry is counted.

build.rs

@@ -0,0 +1,27 @@
+use clap_complete::{generate_to, shells::*};
+use clap_mangen::Man;
+use std::fs::File;
+use std::io::Error;
+use std::path::Path;
+
+include!("src/cli.rs");
+
+fn main() -> Result<(), Error> {
+    let outdir = "completions";
+    let app_name = "dust";
+    let mut cmd = build_cli();
+
+    generate_to(Bash, &mut cmd, app_name, outdir)?;
+    generate_to(Zsh, &mut cmd, app_name, outdir)?;
+    generate_to(Fish, &mut cmd, app_name, outdir)?;
+    generate_to(PowerShell, &mut cmd, app_name, outdir)?;
+    generate_to(Elvish, &mut cmd, app_name, outdir)?;
+
+    let file = Path::new("man-page").join("dust.1");
+    std::fs::create_dir_all("man-page")?;
+    let mut file = File::create(file)?;
+
+    Man::new(cmd).render(&mut file)?;
+
+    Ok(())
+}

ci/how2publish.txt

@@ -1,10 +1,21 @@
 # ----------- To do a release ---------
-# edit version in cargo.toml
+
+# ----------- Pre release ---------
+# Compare times of runs to check no drastic slow down:
+#  hyperfine 'target/release/dust /home/andy'
+#  hyperfine 'dust /home/andy'
+
+# ----------- Release ---------
+# inc version in cargo.toml
+# cargo build --release
+# commit changed files
+# merge to master in github
+
 # tag a commit and push (increment version in Cargo.toml first):
 #   git tag v0.4.5
 #   git push origin v0.4.5
 
 # cargo publish to put it in crates.io
-
-# To install locally [Do before pushing it]
+ 
+# Optional: To install locally
 #cargo install --path .

completions/_dust

@@ -0,0 +1,105 @@
+#compdef dust
+
+autoload -U is-at-least
+
+_dust() {
+    typeset -A opt_args
+    typeset -a _arguments_options
+    local ret=1
+
+    if is-at-least 5.2; then
+        _arguments_options=(-s -S -C)
+    else
+        _arguments_options=(-s -C)
+    fi
+
+    local context curcontext="$curcontext" state line
+    _arguments "${_arguments_options[@]}" : \
+'-d+[Depth to show]:DEPTH: ' \
+'--depth=[Depth to show]:DEPTH: ' \
+'-T+[Number of threads to use]: : ' \
+'--threads=[Number of threads to use]: : ' \
+'--config=[Specify a config file to use]:FILE:_files' \
+'-n+[Number of lines of output to show. (Default is terminal_height - 10)]:NUMBER: ' \
+'--number-of-lines=[Number of lines of output to show. (Default is terminal_height - 10)]:NUMBER: ' \
+'*-X+[Exclude any file or directory with this path]:PATH:_files' \
+'*--ignore-directory=[Exclude any file or directory with this path]:PATH:_files' \
+'-I+[Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter]:FILE:_files' \
+'--ignore-all-in-file=[Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter]:FILE:_files' \
+'-z+[Minimum size file to include in output]:MIN_SIZE: ' \
+'--min-size=[Minimum size file to include in output]:MIN_SIZE: ' \
+'(-e --filter -t --file_types)*-v+[Exclude filepaths matching this regex. To ignore png files type\: -v "\\.png\$" ]:REGEX: ' \
+'(-e --filter -t --file_types)*--invert-filter=[Exclude filepaths matching this regex. To ignore png files type\: -v "\\.png\$" ]:REGEX: ' \
+'(-t --file_types)*-e+[Only include filepaths matching this regex. For png files type\: -e "\\.png\$" ]:REGEX: ' \
+'(-t --file_types)*--filter=[Only include filepaths matching this regex. For png files type\: -e "\\.png\$" ]:REGEX: ' \
+'-w+[Specify width of output overriding the auto detection of terminal width]:WIDTH: ' \
+'--terminal_width=[Specify width of output overriding the auto detection of terminal width]:WIDTH: ' \
+'-o+[Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.]:FORMAT:(si b k m g t kb mb gb tb)' \
+'--output-format=[Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.]:FORMAT:(si b k m g t kb mb gb tb)' \
+'-S+[Specify memory to use as stack size - use if you see\: '\''fatal runtime error\: stack overflow'\'' (default low memory=1048576, high memory=1073741824)]:STACK_SIZE: ' \
+'--stack-size=[Specify memory to use as stack size - use if you see\: '\''fatal runtime error\: stack overflow'\'' (default low memory=1048576, high memory=1073741824)]:STACK_SIZE: ' \
+'-M+[+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => \[curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)]: : ' \
+'--mtime=[+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => \[curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)]: : ' \
+'-A+[just like -mtime, but based on file access time]: : ' \
+'--atime=[just like -mtime, but based on file access time]: : ' \
+'-y+[just like -mtime, but based on file change time]: : ' \
+'--ctime=[just like -mtime, but based on file change time]: : ' \
+'--files0-from=[run dust on NUL-terminated file names specified in file; if argument is -, then read names from standard input]: :_files' \
+'*--collapse=[Keep these directories collapsed]: :_files' \
+'-m+[Directory '\''size'\'' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time]: :(a c m)' \
+'--filetime=[Directory '\''size'\'' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time]: :(a c m)' \
+'-p[Subdirectories will not have their path shortened]' \
+'--full-paths[Subdirectories will not have their path shortened]' \
+'-L[dereference sym links - Treat sym links as directories and go into them]' \
+'--dereference-links[dereference sym links - Treat sym links as directories and go into them]' \
+'-x[Only count the files and directories on the same filesystem as the supplied directory]' \
+'--limit-filesystem[Only count the files and directories on the same filesystem as the supplied directory]' \
+'-s[Use file length instead of blocks]' \
+'--apparent-size[Use file length instead of blocks]' \
+'-r[Print tree upside down (biggest highest)]' \
+'--reverse[Print tree upside down (biggest highest)]' \
+'-c[No colors will be printed (Useful for commands like\: watch)]' \
+'--no-colors[No colors will be printed (Useful for commands like\: watch)]' \
+'-C[Force colors print]' \
+'--force-colors[Force colors print]' \
+'-b[No percent bars or percentages will be displayed]' \
+'--no-percent-bars[No percent bars or percentages will be displayed]' \
+'-B[percent bars moved to right side of screen]' \
+'--bars-on-right[percent bars moved to right side of screen]' \
+'-R[For screen readers. Removes bars. Adds new column\: depth level (May want to use -p too for full path)]' \
+'--screen-reader[For screen readers. Removes bars. Adds new column\: depth level (May want to use -p too for full path)]' \
+'--skip-total[No total row will be displayed]' \
+'-f[Directory '\''size'\'' is number of child files instead of disk size]' \
+'--filecount[Directory '\''size'\'' is number of child files instead of disk size]' \
+'-i[Do not display hidden files]' \
+'--ignore_hidden[Do not display hidden files]' \
+'(-d --depth -D --only-dir)-t[show only these file types]' \
+'(-d --depth -D --only-dir)--file_types[show only these file types]' \
+'-P[Disable the progress indication.]' \
+'--no-progress[Disable the progress indication.]' \
+'--print-errors[Print path with errors.]' \
+'(-F --only-file -t --file_types)-D[Only directories will be displayed.]' \
+'(-F --only-file -t --file_types)--only-dir[Only directories will be displayed.]' \
+'(-D --only-dir)-F[Only files will be displayed. (Finds your largest files)]' \
+'(-D --only-dir)--only-file[Only files will be displayed. (Finds your largest files)]' \
+'-j[Output the directory tree as json to the current directory]' \
+'--output-json[Output the directory tree as json to the current directory]' \
+'-h[Print help]' \
+'--help[Print help]' \
+'-V[Print version]' \
+'--version[Print version]' \
+'*::params:_files' \
+&& ret=0
+}
+
+(( $+functions[_dust_commands] )) ||
+_dust_commands() {
+    local commands; commands=()
+    _describe -t commands 'dust commands' commands "$@"
+}
+
+if [ "$funcstack[1]" = "_dust" ]; then
+    _dust "$@"
+else
+    compdef _dust dust
+fi

completions/_dust.ps1

@@ -0,0 +1,103 @@
+
+using namespace System.Management.Automation
+using namespace System.Management.Automation.Language
+
+Register-ArgumentCompleter -Native -CommandName 'dust' -ScriptBlock {
+    param($wordToComplete, $commandAst, $cursorPosition)
+
+    $commandElements = $commandAst.CommandElements
+    $command = @(
+        'dust'
+        for ($i = 1; $i -lt $commandElements.Count; $i++) {
+            $element = $commandElements[$i]
+            if ($element -isnot [StringConstantExpressionAst] -or
+                $element.StringConstantType -ne [StringConstantType]::BareWord -or
+                $element.Value.StartsWith('-') -or
+                $element.Value -eq $wordToComplete) {
+                break
+        }
+        $element.Value
+    }) -join ';'
+
+    $completions = @(switch ($command) {
+        'dust' {
+            [CompletionResult]::new('-d', 'd', [CompletionResultType]::ParameterName, 'Depth to show')
+            [CompletionResult]::new('--depth', 'depth', [CompletionResultType]::ParameterName, 'Depth to show')
+            [CompletionResult]::new('-T', 'T ', [CompletionResultType]::ParameterName, 'Number of threads to use')
+            [CompletionResult]::new('--threads', 'threads', [CompletionResultType]::ParameterName, 'Number of threads to use')
+            [CompletionResult]::new('--config', 'config', [CompletionResultType]::ParameterName, 'Specify a config file to use')
+            [CompletionResult]::new('-n', 'n', [CompletionResultType]::ParameterName, 'Number of lines of output to show. (Default is terminal_height - 10)')
+            [CompletionResult]::new('--number-of-lines', 'number-of-lines', [CompletionResultType]::ParameterName, 'Number of lines of output to show. (Default is terminal_height - 10)')
+            [CompletionResult]::new('-X', 'X ', [CompletionResultType]::ParameterName, 'Exclude any file or directory with this path')
+            [CompletionResult]::new('--ignore-directory', 'ignore-directory', [CompletionResultType]::ParameterName, 'Exclude any file or directory with this path')
+            [CompletionResult]::new('-I', 'I ', [CompletionResultType]::ParameterName, 'Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter')
+            [CompletionResult]::new('--ignore-all-in-file', 'ignore-all-in-file', [CompletionResultType]::ParameterName, 'Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter')
+            [CompletionResult]::new('-z', 'z', [CompletionResultType]::ParameterName, 'Minimum size file to include in output')
+            [CompletionResult]::new('--min-size', 'min-size', [CompletionResultType]::ParameterName, 'Minimum size file to include in output')
+            [CompletionResult]::new('-v', 'v', [CompletionResultType]::ParameterName, 'Exclude filepaths matching this regex. To ignore png files type: -v "\.png$" ')
+            [CompletionResult]::new('--invert-filter', 'invert-filter', [CompletionResultType]::ParameterName, 'Exclude filepaths matching this regex. To ignore png files type: -v "\.png$" ')
+            [CompletionResult]::new('-e', 'e', [CompletionResultType]::ParameterName, 'Only include filepaths matching this regex. For png files type: -e "\.png$" ')
+            [CompletionResult]::new('--filter', 'filter', [CompletionResultType]::ParameterName, 'Only include filepaths matching this regex. For png files type: -e "\.png$" ')
+            [CompletionResult]::new('-w', 'w', [CompletionResultType]::ParameterName, 'Specify width of output overriding the auto detection of terminal width')
+            [CompletionResult]::new('--terminal_width', 'terminal_width', [CompletionResultType]::ParameterName, 'Specify width of output overriding the auto detection of terminal width')
+            [CompletionResult]::new('-o', 'o', [CompletionResultType]::ParameterName, 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.')
+            [CompletionResult]::new('--output-format', 'output-format', [CompletionResultType]::ParameterName, 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.')
+            [CompletionResult]::new('-S', 'S ', [CompletionResultType]::ParameterName, 'Specify memory to use as stack size - use if you see: ''fatal runtime error: stack overflow'' (default low memory=1048576, high memory=1073741824)')
+            [CompletionResult]::new('--stack-size', 'stack-size', [CompletionResultType]::ParameterName, 'Specify memory to use as stack size - use if you see: ''fatal runtime error: stack overflow'' (default low memory=1048576, high memory=1073741824)')
+            [CompletionResult]::new('-M', 'M ', [CompletionResultType]::ParameterName, '+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => [curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)')
+            [CompletionResult]::new('--mtime', 'mtime', [CompletionResultType]::ParameterName, '+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => [curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)')
+            [CompletionResult]::new('-A', 'A ', [CompletionResultType]::ParameterName, 'just like -mtime, but based on file access time')
+            [CompletionResult]::new('--atime', 'atime', [CompletionResultType]::ParameterName, 'just like -mtime, but based on file access time')
+            [CompletionResult]::new('-y', 'y', [CompletionResultType]::ParameterName, 'just like -mtime, but based on file change time')
+            [CompletionResult]::new('--ctime', 'ctime', [CompletionResultType]::ParameterName, 'just like -mtime, but based on file change time')
+            [CompletionResult]::new('--files0-from', 'files0-from', [CompletionResultType]::ParameterName, 'run dust on NUL-terminated file names specified in file; if argument is -, then read names from standard input')
+            [CompletionResult]::new('--collapse', 'collapse', [CompletionResultType]::ParameterName, 'Keep these directories collapsed')
+            [CompletionResult]::new('-m', 'm', [CompletionResultType]::ParameterName, 'Directory ''size'' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time')
+            [CompletionResult]::new('--filetime', 'filetime', [CompletionResultType]::ParameterName, 'Directory ''size'' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time')
+            [CompletionResult]::new('-p', 'p', [CompletionResultType]::ParameterName, 'Subdirectories will not have their path shortened')
+            [CompletionResult]::new('--full-paths', 'full-paths', [CompletionResultType]::ParameterName, 'Subdirectories will not have their path shortened')
+            [CompletionResult]::new('-L', 'L ', [CompletionResultType]::ParameterName, 'dereference sym links - Treat sym links as directories and go into them')
+            [CompletionResult]::new('--dereference-links', 'dereference-links', [CompletionResultType]::ParameterName, 'dereference sym links - Treat sym links as directories and go into them')
+            [CompletionResult]::new('-x', 'x', [CompletionResultType]::ParameterName, 'Only count the files and directories on the same filesystem as the supplied directory')
+            [CompletionResult]::new('--limit-filesystem', 'limit-filesystem', [CompletionResultType]::ParameterName, 'Only count the files and directories on the same filesystem as the supplied directory')
+            [CompletionResult]::new('-s', 's', [CompletionResultType]::ParameterName, 'Use file length instead of blocks')
+            [CompletionResult]::new('--apparent-size', 'apparent-size', [CompletionResultType]::ParameterName, 'Use file length instead of blocks')
+            [CompletionResult]::new('-r', 'r', [CompletionResultType]::ParameterName, 'Print tree upside down (biggest highest)')
+            [CompletionResult]::new('--reverse', 'reverse', [CompletionResultType]::ParameterName, 'Print tree upside down (biggest highest)')
+            [CompletionResult]::new('-c', 'c', [CompletionResultType]::ParameterName, 'No colors will be printed (Useful for commands like: watch)')
+            [CompletionResult]::new('--no-colors', 'no-colors', [CompletionResultType]::ParameterName, 'No colors will be printed (Useful for commands like: watch)')
+            [CompletionResult]::new('-C', 'C ', [CompletionResultType]::ParameterName, 'Force colors print')
+            [CompletionResult]::new('--force-colors', 'force-colors', [CompletionResultType]::ParameterName, 'Force colors print')
+            [CompletionResult]::new('-b', 'b', [CompletionResultType]::ParameterName, 'No percent bars or percentages will be displayed')
+            [CompletionResult]::new('--no-percent-bars', 'no-percent-bars', [CompletionResultType]::ParameterName, 'No percent bars or percentages will be displayed')
+            [CompletionResult]::new('-B', 'B ', [CompletionResultType]::ParameterName, 'percent bars moved to right side of screen')
+            [CompletionResult]::new('--bars-on-right', 'bars-on-right', [CompletionResultType]::ParameterName, 'percent bars moved to right side of screen')
+            [CompletionResult]::new('-R', 'R ', [CompletionResultType]::ParameterName, 'For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)')
+            [CompletionResult]::new('--screen-reader', 'screen-reader', [CompletionResultType]::ParameterName, 'For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)')
+            [CompletionResult]::new('--skip-total', 'skip-total', [CompletionResultType]::ParameterName, 'No total row will be displayed')
+            [CompletionResult]::new('-f', 'f', [CompletionResultType]::ParameterName, 'Directory ''size'' is number of child files instead of disk size')
+            [CompletionResult]::new('--filecount', 'filecount', [CompletionResultType]::ParameterName, 'Directory ''size'' is number of child files instead of disk size')
+            [CompletionResult]::new('-i', 'i', [CompletionResultType]::ParameterName, 'Do not display hidden files')
+            [CompletionResult]::new('--ignore_hidden', 'ignore_hidden', [CompletionResultType]::ParameterName, 'Do not display hidden files')
+            [CompletionResult]::new('-t', 't', [CompletionResultType]::ParameterName, 'show only these file types')
+            [CompletionResult]::new('--file_types', 'file_types', [CompletionResultType]::ParameterName, 'show only these file types')
+            [CompletionResult]::new('-P', 'P ', [CompletionResultType]::ParameterName, 'Disable the progress indication.')
+            [CompletionResult]::new('--no-progress', 'no-progress', [CompletionResultType]::ParameterName, 'Disable the progress indication.')
+            [CompletionResult]::new('--print-errors', 'print-errors', [CompletionResultType]::ParameterName, 'Print path with errors.')
+            [CompletionResult]::new('-D', 'D ', [CompletionResultType]::ParameterName, 'Only directories will be displayed.')
+            [CompletionResult]::new('--only-dir', 'only-dir', [CompletionResultType]::ParameterName, 'Only directories will be displayed.')
+            [CompletionResult]::new('-F', 'F ', [CompletionResultType]::ParameterName, 'Only files will be displayed. (Finds your largest files)')
+            [CompletionResult]::new('--only-file', 'only-file', [CompletionResultType]::ParameterName, 'Only files will be displayed. (Finds your largest files)')
+            [CompletionResult]::new('-j', 'j', [CompletionResultType]::ParameterName, 'Output the directory tree as json to the current directory')
+            [CompletionResult]::new('--output-json', 'output-json', [CompletionResultType]::ParameterName, 'Output the directory tree as json to the current directory')
+            [CompletionResult]::new('-h', 'h', [CompletionResultType]::ParameterName, 'Print help')
+            [CompletionResult]::new('--help', 'help', [CompletionResultType]::ParameterName, 'Print help')
+            [CompletionResult]::new('-V', 'V ', [CompletionResultType]::ParameterName, 'Print version')
+            [CompletionResult]::new('--version', 'version', [CompletionResultType]::ParameterName, 'Print version')
+            break
+        }
+    })
+
+    $completions.Where{ $_.CompletionText -like "$wordToComplete*" } |
+        Sort-Object -Property ListItemText
+}

completions/dust.bash

@@ -0,0 +1,207 @@
+_dust() {
+    local i cur prev opts cmd
+    COMPREPLY=()
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    prev="${COMP_WORDS[COMP_CWORD-1]}"
+    cmd=""
+    opts=""
+
+    for i in ${COMP_WORDS[@]}
+    do
+        case "${cmd},${i}" in
+            ",$1")
+                cmd="dust"
+                ;;
+            *)
+                ;;
+        esac
+    done
+
+    case "${cmd}" in
+        dust)
+            opts="-d -T -n -p -X -I -L -x -s -r -c -C -b -B -z -R -f -i -v -e -t -w -P -D -F -o -S -j -M -A -y -m -h -V --depth --threads --config --number-of-lines --full-paths --ignore-directory --ignore-all-in-file --dereference-links --limit-filesystem --apparent-size --reverse --no-colors --force-colors --no-percent-bars --bars-on-right --min-size --screen-reader --skip-total --filecount --ignore_hidden --invert-filter --filter --file_types --terminal_width --no-progress --print-errors --only-dir --only-file --output-format --stack-size --output-json --mtime --atime --ctime --files0-from --collapse --filetime --help --version [PATH]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --depth)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -d)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --threads)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -T)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --number-of-lines)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -n)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --ignore-directory)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -X)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --ignore-all-in-file)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                -I)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --min-size)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -z)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --invert-filter)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -v)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --filter)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -e)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --terminal_width)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -w)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --output-format)
+                    COMPREPLY=($(compgen -W "si b k m g t kb mb gb tb" -- "${cur}"))
+                    return 0
+                    ;;
+                -o)
+                    COMPREPLY=($(compgen -W "si b k m g t kb mb gb tb" -- "${cur}"))
+                    return 0
+                    ;;
+                --stack-size)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -S)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --mtime)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -M)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --atime)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -A)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --ctime)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -y)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --files0-from)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --collapse)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --filetime)
+                    COMPREPLY=($(compgen -W "a c m" -- "${cur}"))
+                    return 0
+                    ;;
+                -m)
+                    COMPREPLY=($(compgen -W "a c m" -- "${cur}"))
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+    esac
+}
+
+if [[ "${BASH_VERSINFO[0]}" -eq 4 && "${BASH_VERSINFO[1]}" -ge 4 || "${BASH_VERSINFO[0]}" -gt 4 ]]; then
+    complete -F _dust -o nosort -o bashdefault -o default dust
+else
+    complete -F _dust -o bashdefault -o default dust
+fi

completions/dust.elv

@@ -0,0 +1,97 @@
+
+use builtin;
+use str;
+
+set edit:completion:arg-completer[dust] = {|@words|
+    fn spaces {|n|
+        builtin:repeat $n ' ' | str:join ''
+    }
+    fn cand {|text desc|
+        edit:complex-candidate $text &display=$text' '(spaces (- 14 (wcswidth $text)))$desc
+    }
+    var command = 'dust'
+    for word $words[1..-1] {
+        if (str:has-prefix $word '-') {
+            break
+        }
+        set command = $command';'$word
+    }
+    var completions = [
+        &'dust'= {
+            cand -d 'Depth to show'
+            cand --depth 'Depth to show'
+            cand -T 'Number of threads to use'
+            cand --threads 'Number of threads to use'
+            cand --config 'Specify a config file to use'
+            cand -n 'Number of lines of output to show. (Default is terminal_height - 10)'
+            cand --number-of-lines 'Number of lines of output to show. (Default is terminal_height - 10)'
+            cand -X 'Exclude any file or directory with this path'
+            cand --ignore-directory 'Exclude any file or directory with this path'
+            cand -I 'Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter'
+            cand --ignore-all-in-file 'Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter'
+            cand -z 'Minimum size file to include in output'
+            cand --min-size 'Minimum size file to include in output'
+            cand -v 'Exclude filepaths matching this regex. To ignore png files type: -v "\.png$" '
+            cand --invert-filter 'Exclude filepaths matching this regex. To ignore png files type: -v "\.png$" '
+            cand -e 'Only include filepaths matching this regex. For png files type: -e "\.png$" '
+            cand --filter 'Only include filepaths matching this regex. For png files type: -e "\.png$" '
+            cand -w 'Specify width of output overriding the auto detection of terminal width'
+            cand --terminal_width 'Specify width of output overriding the auto detection of terminal width'
+            cand -o 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.'
+            cand --output-format 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.'
+            cand -S 'Specify memory to use as stack size - use if you see: ''fatal runtime error: stack overflow'' (default low memory=1048576, high memory=1073741824)'
+            cand --stack-size 'Specify memory to use as stack size - use if you see: ''fatal runtime error: stack overflow'' (default low memory=1048576, high memory=1073741824)'
+            cand -M '+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => [curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)'
+            cand --mtime '+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => [curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)'
+            cand -A 'just like -mtime, but based on file access time'
+            cand --atime 'just like -mtime, but based on file access time'
+            cand -y 'just like -mtime, but based on file change time'
+            cand --ctime 'just like -mtime, but based on file change time'
+            cand --files0-from 'run dust on NUL-terminated file names specified in file; if argument is -, then read names from standard input'
+            cand --collapse 'Keep these directories collapsed'
+            cand -m 'Directory ''size'' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time'
+            cand --filetime 'Directory ''size'' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time'
+            cand -p 'Subdirectories will not have their path shortened'
+            cand --full-paths 'Subdirectories will not have their path shortened'
+            cand -L 'dereference sym links - Treat sym links as directories and go into them'
+            cand --dereference-links 'dereference sym links - Treat sym links as directories and go into them'
+            cand -x 'Only count the files and directories on the same filesystem as the supplied directory'
+            cand --limit-filesystem 'Only count the files and directories on the same filesystem as the supplied directory'
+            cand -s 'Use file length instead of blocks'
+            cand --apparent-size 'Use file length instead of blocks'
+            cand -r 'Print tree upside down (biggest highest)'
+            cand --reverse 'Print tree upside down (biggest highest)'
+            cand -c 'No colors will be printed (Useful for commands like: watch)'
+            cand --no-colors 'No colors will be printed (Useful for commands like: watch)'
+            cand -C 'Force colors print'
+            cand --force-colors 'Force colors print'
+            cand -b 'No percent bars or percentages will be displayed'
+            cand --no-percent-bars 'No percent bars or percentages will be displayed'
+            cand -B 'percent bars moved to right side of screen'
+            cand --bars-on-right 'percent bars moved to right side of screen'
+            cand -R 'For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)'
+            cand --screen-reader 'For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)'
+            cand --skip-total 'No total row will be displayed'
+            cand -f 'Directory ''size'' is number of child files instead of disk size'
+            cand --filecount 'Directory ''size'' is number of child files instead of disk size'
+            cand -i 'Do not display hidden files'
+            cand --ignore_hidden 'Do not display hidden files'
+            cand -t 'show only these file types'
+            cand --file_types 'show only these file types'
+            cand -P 'Disable the progress indication.'
+            cand --no-progress 'Disable the progress indication.'
+            cand --print-errors 'Print path with errors.'
+            cand -D 'Only directories will be displayed.'
+            cand --only-dir 'Only directories will be displayed.'
+            cand -F 'Only files will be displayed. (Finds your largest files)'
+            cand --only-file 'Only files will be displayed. (Finds your largest files)'
+            cand -j 'Output the directory tree as json to the current directory'
+            cand --output-json 'Output the directory tree as json to the current directory'
+            cand -h 'Print help'
+            cand --help 'Print help'
+            cand -V 'Print version'
+            cand --version 'Print version'
+        }
+    ]
+    $completions[$command]
+}

completions/dust.fish

@@ -0,0 +1,39 @@
+complete -c dust -s d -l depth -d 'Depth to show' -r
+complete -c dust -s T -l threads -d 'Number of threads to use' -r
+complete -c dust -l config -d 'Specify a config file to use' -r -F
+complete -c dust -s n -l number-of-lines -d 'Number of lines of output to show. (Default is terminal_height - 10)' -r
+complete -c dust -s X -l ignore-directory -d 'Exclude any file or directory with this path' -r -F
+complete -c dust -s I -l ignore-all-in-file -d 'Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter' -r -F
+complete -c dust -s z -l min-size -d 'Minimum size file to include in output' -r
+complete -c dust -s v -l invert-filter -d 'Exclude filepaths matching this regex. To ignore png files type: -v "\\.png$" ' -r
+complete -c dust -s e -l filter -d 'Only include filepaths matching this regex. For png files type: -e "\\.png$" ' -r
+complete -c dust -s w -l terminal_width -d 'Specify width of output overriding the auto detection of terminal width' -r
+complete -c dust -s o -l output-format -d 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.' -r -f -a "{si\t'',b\t'',k\t'',m\t'',g\t'',t\t'',kb\t'',mb\t'',gb\t'',tb\t''}"
+complete -c dust -s S -l stack-size -d 'Specify memory to use as stack size - use if you see: \'fatal runtime error: stack overflow\' (default low memory=1048576, high memory=1073741824)' -r
+complete -c dust -s M -l mtime -d '+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => [curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)' -r
+complete -c dust -s A -l atime -d 'just like -mtime, but based on file access time' -r
+complete -c dust -s y -l ctime -d 'just like -mtime, but based on file change time' -r
+complete -c dust -l files0-from -d 'run dust on NUL-terminated file names specified in file; if argument is -, then read names from standard input' -r -F
+complete -c dust -l collapse -d 'Keep these directories collapsed' -r -F
+complete -c dust -s m -l filetime -d 'Directory \'size\' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time' -r -f -a "{a\t'',c\t'',m\t''}"
+complete -c dust -s p -l full-paths -d 'Subdirectories will not have their path shortened'
+complete -c dust -s L -l dereference-links -d 'dereference sym links - Treat sym links as directories and go into them'
+complete -c dust -s x -l limit-filesystem -d 'Only count the files and directories on the same filesystem as the supplied directory'
+complete -c dust -s s -l apparent-size -d 'Use file length instead of blocks'
+complete -c dust -s r -l reverse -d 'Print tree upside down (biggest highest)'
+complete -c dust -s c -l no-colors -d 'No colors will be printed (Useful for commands like: watch)'
+complete -c dust -s C -l force-colors -d 'Force colors print'
+complete -c dust -s b -l no-percent-bars -d 'No percent bars or percentages will be displayed'
+complete -c dust -s B -l bars-on-right -d 'percent bars moved to right side of screen'
+complete -c dust -s R -l screen-reader -d 'For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)'
+complete -c dust -l skip-total -d 'No total row will be displayed'
+complete -c dust -s f -l filecount -d 'Directory \'size\' is number of child files instead of disk size'
+complete -c dust -s i -l ignore_hidden -d 'Do not display hidden files'
+complete -c dust -s t -l file_types -d 'show only these file types'
+complete -c dust -s P -l no-progress -d 'Disable the progress indication.'
+complete -c dust -l print-errors -d 'Print path with errors.'
+complete -c dust -s D -l only-dir -d 'Only directories will be displayed.'
+complete -c dust -s F -l only-file -d 'Only files will be displayed. (Finds your largest files)'
+complete -c dust -s j -l output-json -d 'Output the directory tree as json to the current directory'
+complete -c dust -s h -l help -d 'Print help'
+complete -c dust -s V -l version -d 'Print version'

config/config.toml

@@ -0,0 +1,28 @@
+# Sample Config file, works with toml and yaml
+# Place in either:
+#   ~/.config/dust/config.toml
+#   ~/.dust.toml
+
+# Print tree upside down (biggest highest)
+reverse=true
+
+# Subdirectories will not have their path shortened
+display-full-paths=true
+
+# Use file length instead of blocks
+display-apparent-size=true
+
+# No colors will be printed
+no-colors=true
+
+# No percent bars or percentages will be displayed
+no-bars=true
+
+# No total row will be displayed
+skip-total=true
+
+# Do not display hidden files
+ignore-hidden=true
+
+# print sizes in powers of 1000 (e.g., 1.1G)
+output-format="si"

man-page/dust.1

@@ -0,0 +1,140 @@
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.TH Dust 1  "Dust 1.1.1" 
+.SH NAME
+Dust \- Like du but more intuitive
+.SH SYNOPSIS
+\fBdust\fR [\fB\-d\fR|\fB\-\-depth\fR] [\fB\-T\fR|\fB\-\-threads\fR] [\fB\-\-config\fR] [\fB\-n\fR|\fB\-\-number\-of\-lines\fR] [\fB\-p\fR|\fB\-\-full\-paths\fR] [\fB\-X\fR|\fB\-\-ignore\-directory\fR] [\fB\-I\fR|\fB\-\-ignore\-all\-in\-file\fR] [\fB\-L\fR|\fB\-\-dereference\-links\fR] [\fB\-x\fR|\fB\-\-limit\-filesystem\fR] [\fB\-s\fR|\fB\-\-apparent\-size\fR] [\fB\-r\fR|\fB\-\-reverse\fR] [\fB\-c\fR|\fB\-\-no\-colors\fR] [\fB\-C\fR|\fB\-\-force\-colors\fR] [\fB\-b\fR|\fB\-\-no\-percent\-bars\fR] [\fB\-B\fR|\fB\-\-bars\-on\-right\fR] [\fB\-z\fR|\fB\-\-min\-size\fR] [\fB\-R\fR|\fB\-\-screen\-reader\fR] [\fB\-\-skip\-total\fR] [\fB\-f\fR|\fB\-\-filecount\fR] [\fB\-i\fR|\fB\-\-ignore_hidden\fR] [\fB\-v\fR|\fB\-\-invert\-filter\fR] [\fB\-e\fR|\fB\-\-filter\fR] [\fB\-t\fR|\fB\-\-file_types\fR] [\fB\-w\fR|\fB\-\-terminal_width\fR] [\fB\-P\fR|\fB\-\-no\-progress\fR] [\fB\-\-print\-errors\fR] [\fB\-D\fR|\fB\-\-only\-dir\fR] [\fB\-F\fR|\fB\-\-only\-file\fR] [\fB\-o\fR|\fB\-\-output\-format\fR] [\fB\-S\fR|\fB\-\-stack\-size\fR] [\fB\-j\fR|\fB\-\-output\-json\fR] [\fB\-M\fR|\fB\-\-mtime\fR] [\fB\-A\fR|\fB\-\-atime\fR] [\fB\-y\fR|\fB\-\-ctime\fR] [\fB\-\-files0\-from\fR] [\fB\-\-collapse\fR] [\fB\-m\fR|\fB\-\-filetime\fR] [\fB\-h\fR|\fB\-\-help\fR] [\fB\-V\fR|\fB\-\-version\fR] [\fIPATH\fR] 
+.SH DESCRIPTION
+Like du but more intuitive
+.SH OPTIONS
+.TP
+\fB\-d\fR, \fB\-\-depth\fR=\fIDEPTH\fR
+Depth to show
+.TP
+\fB\-T\fR, \fB\-\-threads\fR
+Number of threads to use
+.TP
+\fB\-\-config\fR=\fIFILE\fR
+Specify a config file to use
+.TP
+\fB\-n\fR, \fB\-\-number\-of\-lines\fR=\fINUMBER\fR
+Number of lines of output to show. (Default is terminal_height \- 10)
+.TP
+\fB\-p\fR, \fB\-\-full\-paths\fR
+Subdirectories will not have their path shortened
+.TP
+\fB\-X\fR, \fB\-\-ignore\-directory\fR=\fIPATH\fR
+Exclude any file or directory with this path
+.TP
+\fB\-I\fR, \fB\-\-ignore\-all\-in\-file\fR=\fIFILE\fR
+Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by \-\-invert_filter
+.TP
+\fB\-L\fR, \fB\-\-dereference\-links\fR
+dereference sym links \- Treat sym links as directories and go into them
+.TP
+\fB\-x\fR, \fB\-\-limit\-filesystem\fR
+Only count the files and directories on the same filesystem as the supplied directory
+.TP
+\fB\-s\fR, \fB\-\-apparent\-size\fR
+Use file length instead of blocks
+.TP
+\fB\-r\fR, \fB\-\-reverse\fR
+Print tree upside down (biggest highest)
+.TP
+\fB\-c\fR, \fB\-\-no\-colors\fR
+No colors will be printed (Useful for commands like: watch)
+.TP
+\fB\-C\fR, \fB\-\-force\-colors\fR
+Force colors print
+.TP
+\fB\-b\fR, \fB\-\-no\-percent\-bars\fR
+No percent bars or percentages will be displayed
+.TP
+\fB\-B\fR, \fB\-\-bars\-on\-right\fR
+percent bars moved to right side of screen
+.TP
+\fB\-z\fR, \fB\-\-min\-size\fR=\fIMIN_SIZE\fR
+Minimum size file to include in output
+.TP
+\fB\-R\fR, \fB\-\-screen\-reader\fR
+For screen readers. Removes bars. Adds new column: depth level (May want to use \-p too for full path)
+.TP
+\fB\-\-skip\-total\fR
+No total row will be displayed
+.TP
+\fB\-f\fR, \fB\-\-filecount\fR
+Directory \*(Aqsize\*(Aq is number of child files instead of disk size
+.TP
+\fB\-i\fR, \fB\-\-ignore_hidden\fR
+Do not display hidden files
+.TP
+\fB\-v\fR, \fB\-\-invert\-filter\fR=\fIREGEX\fR
+Exclude filepaths matching this regex. To ignore png files type: \-v "\\.png$" 
+.TP
+\fB\-e\fR, \fB\-\-filter\fR=\fIREGEX\fR
+Only include filepaths matching this regex. For png files type: \-e "\\.png$" 
+.TP
+\fB\-t\fR, \fB\-\-file_types\fR
+show only these file types
+.TP
+\fB\-w\fR, \fB\-\-terminal_width\fR=\fIWIDTH\fR
+Specify width of output overriding the auto detection of terminal width
+.TP
+\fB\-P\fR, \fB\-\-no\-progress\fR
+Disable the progress indication.
+.TP
+\fB\-\-print\-errors\fR
+Print path with errors.
+.TP
+\fB\-D\fR, \fB\-\-only\-dir\fR
+Only directories will be displayed.
+.TP
+\fB\-F\fR, \fB\-\-only\-file\fR
+Only files will be displayed. (Finds your largest files)
+.TP
+\fB\-o\fR, \fB\-\-output\-format\fR=\fIFORMAT\fR
+Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.
+.br
+
+.br
+[\fIpossible values: \fRsi, b, k, m, g, t, kb, mb, gb, tb]
+.TP
+\fB\-S\fR, \fB\-\-stack\-size\fR=\fISTACK_SIZE\fR
+Specify memory to use as stack size \- use if you see: \*(Aqfatal runtime error: stack overflow\*(Aq (default low memory=1048576, high memory=1073741824)
+.TP
+\fB\-j\fR, \fB\-\-output\-json\fR
+Output the directory tree as json to the current directory
+.TP
+\fB\-M\fR, \fB\-\-mtime\fR
++/\-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => [curr−(n+1), curr−n), and \-n => (𝑐𝑢𝑟𝑟−𝑛, +∞)
+.TP
+\fB\-A\fR, \fB\-\-atime\fR
+just like \-mtime, but based on file access time
+.TP
+\fB\-y\fR, \fB\-\-ctime\fR
+just like \-mtime, but based on file change time
+.TP
+\fB\-\-files0\-from\fR
+run dust on NUL\-terminated file names specified in file; if argument is \-, then read names from standard input
+.TP
+\fB\-\-collapse\fR
+Keep these directories collapsed
+.TP
+\fB\-m\fR, \fB\-\-filetime\fR
+Directory \*(Aqsize\*(Aq is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time
+.br
+
+.br
+[\fIpossible values: \fRa, c, m]
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+Print help
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+Print version
+.TP
+[\fIPATH\fR]
+
+.SH VERSION
+v1.1.1

src/cli.rs

@@ -0,0 +1,326 @@
+use clap::{builder::PossibleValue, value_parser, Arg, Command};
+
+// For single thread mode set this variable on your command line:
+// export RAYON_NUM_THREADS=1
+
+pub fn build_cli() -> Command {
+    Command::new("Dust")
+        .about("Like du but more intuitive")
+        .version(env!("CARGO_PKG_VERSION"))
+        .arg(
+            Arg::new("depth")
+                .short('d')
+                .long("depth")
+                .value_name("DEPTH")
+                .value_parser(value_parser!(usize))
+                .help("Depth to show")
+                .num_args(1)
+        )
+        .arg(
+            Arg::new("threads")
+                .short('T')
+                .long("threads")
+                .value_parser(value_parser!(usize))
+                .help("Number of threads to use")
+                .num_args(1)
+        )
+        .arg(
+            Arg::new("config")
+                .long("config")
+                .help("Specify a config file to use")
+                .value_name("FILE")
+                .value_hint(clap::ValueHint::FilePath)
+                .value_parser(value_parser!(String))
+                .num_args(1)
+        )
+        .arg(
+            Arg::new("number_of_lines")
+                .short('n')
+                .long("number-of-lines")
+                .value_name("NUMBER")
+                .value_parser(value_parser!(usize))
+                .help("Number of lines of output to show. (Default is terminal_height - 10)")
+                .num_args(1)
+        )
+        .arg(
+            Arg::new("display_full_paths")
+                .short('p')
+                .long("full-paths")
+                .action(clap::ArgAction::SetTrue)
+                .help("Subdirectories will not have their path shortened"),
+        )
+        .arg(
+            Arg::new("ignore_directory")
+                .short('X')
+                .long("ignore-directory")
+                .value_name("PATH")
+                .value_hint(clap::ValueHint::AnyPath)
+                .action(clap::ArgAction::Append)
+                .help("Exclude any file or directory with this path"),
+        )
+        .arg(
+            Arg::new("ignore_all_in_file")
+                .short('I')
+                .long("ignore-all-in-file")
+                .value_name("FILE")
+                .value_hint(clap::ValueHint::FilePath)
+                .value_parser(value_parser!(String))
+                .help("Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter"),
+        )
+         .arg(
+            Arg::new("dereference_links")
+                .short('L')
+                .long("dereference-links")
+                .action(clap::ArgAction::SetTrue)
+                .help("dereference sym links - Treat sym links as directories and go into them"),
+        )
+        .arg(
+            Arg::new("limit_filesystem")
+                .short('x')
+                .long("limit-filesystem")
+                .action(clap::ArgAction::SetTrue)
+                .help("Only count the files and directories on the same filesystem as the supplied directory"),
+        )
+        .arg(
+            Arg::new("display_apparent_size")
+                .short('s')
+                .long("apparent-size")
+                .action(clap::ArgAction::SetTrue)
+                .help("Use file length instead of blocks"),
+        )
+        .arg(
+            Arg::new("reverse")
+                .short('r')
+                .long("reverse")
+                .action(clap::ArgAction::SetTrue)
+                .help("Print tree upside down (biggest highest)"),
+        )
+        .arg(
+            Arg::new("no_colors")
+                .short('c')
+                .long("no-colors")
+                .action(clap::ArgAction::SetTrue)
+                .help("No colors will be printed (Useful for commands like: watch)"),
+        )
+        .arg(
+            Arg::new("force_colors")
+                .short('C')
+                .long("force-colors")
+                .action(clap::ArgAction::SetTrue)
+                .help("Force colors print"),
+        )
+        .arg(
+            Arg::new("no_bars")
+                .short('b')
+                .long("no-percent-bars")
+                .action(clap::ArgAction::SetTrue)
+                .help("No percent bars or percentages will be displayed"),
+        )
+        .arg(
+            Arg::new("bars_on_right")
+                .short('B')
+                .long("bars-on-right")
+                .action(clap::ArgAction::SetTrue)
+                .help("percent bars moved to right side of screen"),
+        )
+        .arg(
+            Arg::new("min_size")
+                .short('z')
+                .long("min-size")
+                .value_name("MIN_SIZE")
+                .num_args(1)
+                .help("Minimum size file to include in output"),
+        )
+        .arg(
+            Arg::new("screen_reader")
+                .short('R')
+                .long("screen-reader")
+                .action(clap::ArgAction::SetTrue)
+                .help("For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)"),
+        )
+        .arg(
+            Arg::new("skip_total")
+                .long("skip-total")
+                .action(clap::ArgAction::SetTrue)
+                .help("No total row will be displayed"),
+        )
+        .arg(
+            Arg::new("by_filecount")
+                .short('f')
+                .long("filecount")
+                .action(clap::ArgAction::SetTrue)
+                .help("Directory 'size' is number of child files instead of disk size"),
+        )
+        .arg(
+            Arg::new("ignore_hidden")
+                .short('i') // Do not use 'h' this is used by 'help'
+                .long("ignore_hidden")
+                .action(clap::ArgAction::SetTrue)
+                .help("Do not display hidden files"),
+        )
+        .arg(
+            Arg::new("invert_filter")
+                .short('v')
+                .long("invert-filter")
+                .value_name("REGEX")
+                .action(clap::ArgAction::Append)
+                .conflicts_with("filter")
+                .conflicts_with("types")
+                .help("Exclude filepaths matching this regex. To ignore png files type: -v \"\\.png$\" "),
+        )
+        .arg(
+            Arg::new("filter")
+                .short('e')
+                .long("filter")
+                .value_name("REGEX")
+                .action(clap::ArgAction::Append)
+                .conflicts_with("types")
+                .help("Only include filepaths matching this regex. For png files type: -e \"\\.png$\" "),
+        )
+        .arg(
+            Arg::new("types")
+                .short('t')
+                .long("file_types")
+                .conflicts_with("depth")
+                .conflicts_with("only_dir")
+                .action(clap::ArgAction::SetTrue)
+                .help("show only these file types"),
+        )
+        .arg(
+            Arg::new("width")
+                .short('w')
+                .long("terminal_width")
+                .value_name("WIDTH")
+                .value_parser(value_parser!(usize))
+                .num_args(1)
+                .help("Specify width of output overriding the auto detection of terminal width"),
+        )
+        .arg(
+            Arg::new("disable_progress")
+                .short('P')
+                .long("no-progress")
+                .action(clap::ArgAction::SetTrue)
+                .help("Disable the progress indication."),
+        )
+        .arg(
+            Arg::new("print_errors")
+                .long("print-errors")
+                .action(clap::ArgAction::SetTrue)
+                .help("Print path with errors."),
+        )
+        .arg(
+            Arg::new("only_dir")
+                .short('D')
+                .long("only-dir")
+                .conflicts_with("only_file")
+                .conflicts_with("types")
+                .action(clap::ArgAction::SetTrue)
+                .help("Only directories will be displayed."),
+        )
+        .arg(
+            Arg::new("only_file")
+                .short('F')
+                .long("only-file")
+                .conflicts_with("only_dir")
+                .action(clap::ArgAction::SetTrue)
+                .help("Only files will be displayed. (Finds your largest files)"),
+        )
+        .arg(
+            Arg::new("output_format")
+                .short('o')
+                .long("output-format")
+                .value_name("FORMAT")
+                .value_parser([
+                    PossibleValue::new("si"),
+                    PossibleValue::new("b"),
+                    PossibleValue::new("k").alias("kib"),
+                    PossibleValue::new("m").alias("mib"),
+                    PossibleValue::new("g").alias("gib"),
+                    PossibleValue::new("t").alias("tib"),
+                    PossibleValue::new("kb"),
+                    PossibleValue::new("mb"),
+                    PossibleValue::new("gb"),
+                    PossibleValue::new("tb"),
+                ])
+                .ignore_case(true)
+                .help("Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.")
+        )
+        .arg(
+            Arg::new("stack_size")
+                .short('S')
+                .long("stack-size")
+                .value_name("STACK_SIZE")
+                .value_parser(value_parser!(usize))
+                .num_args(1)
+                .help("Specify memory to use as stack size - use if you see: 'fatal runtime error: stack overflow' (default low memory=1048576, high memory=1073741824)"),
+        )
+        .arg(
+            Arg::new("params")
+                .value_name("PATH")
+                .value_hint(clap::ValueHint::AnyPath)
+                .value_parser(value_parser!(String))
+                .num_args(1..)
+        )
+        .arg(
+            Arg::new("output_json")
+                .short('j')
+                .long("output-json")
+                .action(clap::ArgAction::SetTrue)
+                .help("Output the directory tree as json to the current directory"),
+        )
+        .arg(
+            Arg::new("mtime")
+            .short('M')
+            .long("mtime")
+            .num_args(1)
+            .allow_hyphen_values(true)
+            .value_parser(value_parser!(String))
+            .help("+/-n matches files modified more/less than n days ago , and n matches files modified exactly n days ago, days are rounded down.That is +n => (−∞, curr−(n+1)), n => [curr−(n+1), curr−n), and -n => (𝑐𝑢𝑟𝑟−𝑛, +∞)")
+        )
+        .arg(
+            Arg::new("atime")
+            .short('A')
+            .long("atime")
+            .num_args(1)
+            .allow_hyphen_values(true)
+            .value_parser(value_parser!(String))
+            .help("just like -mtime, but based on file access time")
+        )
+        .arg(
+            Arg::new("ctime")
+            .short('y')
+            .long("ctime")
+            .num_args(1)
+            .allow_hyphen_values(true)
+            .value_parser(value_parser!(String))
+            .help("just like -mtime, but based on file change time")
+        )
+        .arg(
+            Arg::new("files0_from")
+                .long("files0-from")
+                .value_hint(clap::ValueHint::AnyPath)
+                .value_parser(value_parser!(String))
+                .num_args(1)
+                .help("run dust on NUL-terminated file names specified in file; if argument is -, then read names from standard input"),
+        )
+        .arg(
+            Arg::new("collapse")
+                .long("collapse")
+                .value_hint(clap::ValueHint::AnyPath)
+                .value_parser(value_parser!(String))
+                .action(clap::ArgAction::Append)
+                .help("Keep these directories collapsed"),
+        )
+        .arg(
+            Arg::new("filetime")
+                .short('m')
+                .long("filetime")
+                .num_args(1)
+                .value_parser([
+                    PossibleValue::new("a").alias("accessed"),
+                    PossibleValue::new("c").alias("changed"),
+                    PossibleValue::new("m").alias("modified"),
+                ])
+                .help("Directory 'size' is max filetime of child files instead of disk size. while a/c/m for last accessed/changed/modified time"),
+        )
+}

src/config.rs

@@ -0,0 +1,425 @@
+use crate::node::FileTime;
+use chrono::{Local, TimeZone};
+use clap::ArgMatches;
+use config_file::FromConfigFile;
+use regex::Regex;
+use serde::Deserialize;
+use std::io::IsTerminal;
+use std::path::Path;
+use std::path::PathBuf;
+
+use crate::dir_walker::Operator;
+use crate::display::get_number_format;
+
+pub static DAY_SECONDS: i64 = 24 * 60 * 60;
+
+#[derive(Deserialize, Default)]
+#[serde(rename_all = "kebab-case")]
+pub struct Config {
+    pub display_full_paths: Option<bool>,
+    pub display_apparent_size: Option<bool>,
+    pub reverse: Option<bool>,
+    pub no_colors: Option<bool>,
+    pub force_colors: Option<bool>,
+    pub no_bars: Option<bool>,
+    pub skip_total: Option<bool>,
+    pub screen_reader: Option<bool>,
+    pub ignore_hidden: Option<bool>,
+    pub output_format: Option<String>,
+    pub min_size: Option<String>,
+    pub only_dir: Option<bool>,
+    pub only_file: Option<bool>,
+    pub disable_progress: Option<bool>,
+    pub depth: Option<usize>,
+    pub bars_on_right: Option<bool>,
+    pub stack_size: Option<usize>,
+    pub threads: Option<usize>,
+    pub output_json: Option<bool>,
+    pub print_errors: Option<bool>,
+    pub files0_from: Option<String>,
+}
+
+impl Config {
+    pub fn get_files_from(&self, options: &ArgMatches) -> Option<String> {
+        let from_file = options.get_one::<String>("files0_from");
+        match from_file {
+            None => self.files0_from.as_ref().map(|x| x.to_string()),
+            Some(x) => Some(x.to_string()),
+        }
+    }
+    pub fn get_no_colors(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.no_colors || options.get_flag("no_colors")
+    }
+    pub fn get_force_colors(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.force_colors || options.get_flag("force_colors")
+    }
+    pub fn get_disable_progress(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.disable_progress
+            || options.get_flag("disable_progress")
+            || !std::io::stdout().is_terminal()
+    }
+    pub fn get_apparent_size(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.display_apparent_size || options.get_flag("display_apparent_size")
+    }
+    pub fn get_ignore_hidden(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.ignore_hidden || options.get_flag("ignore_hidden")
+    }
+    pub fn get_full_paths(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.display_full_paths || options.get_flag("display_full_paths")
+    }
+    pub fn get_reverse(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.reverse || options.get_flag("reverse")
+    }
+    pub fn get_no_bars(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.no_bars || options.get_flag("no_bars")
+    }
+    pub fn get_output_format(&self, options: &ArgMatches) -> String {
+        let out_fmt = options.get_one::<String>("output_format");
+        (match out_fmt {
+            None => match &self.output_format {
+                None => "".to_string(),
+                Some(x) => x.to_string(),
+            },
+            Some(x) => x.into(),
+        })
+        .to_lowercase()
+    }
+
+    pub fn get_filetime(&self, options: &ArgMatches) -> Option<FileTime> {
+        let out_fmt = options.get_one::<String>("filetime");
+        match out_fmt {
+            None => None,
+            Some(x) => match x.as_str() {
+                "m" | "modified" => Some(FileTime::Modified),
+                "a" | "accessed" => Some(FileTime::Accessed),
+                "c" | "changed" => Some(FileTime::Changed),
+                _ => unreachable!(),
+            },
+        }
+    }
+
+    pub fn get_skip_total(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.skip_total || options.get_flag("skip_total")
+    }
+    pub fn get_screen_reader(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.screen_reader || options.get_flag("screen_reader")
+    }
+    pub fn get_depth(&self, options: &ArgMatches) -> usize {
+        if let Some(v) = options.get_one::<usize>("depth") {
+            return *v;
+        }
+
+        self.depth.unwrap_or(usize::MAX)
+    }
+    pub fn get_min_size(&self, options: &ArgMatches) -> Option<usize> {
+        let size_from_param = options.get_one::<String>("min_size");
+        self._get_min_size(size_from_param)
+    }
+    fn _get_min_size(&self, min_size: Option<&String>) -> Option<usize> {
+        let size_from_param = min_size.and_then(|a| convert_min_size(a));
+
+        if size_from_param.is_none() {
+            self.min_size
+                .as_ref()
+                .and_then(|a| convert_min_size(a.as_ref()))
+        } else {
+            size_from_param
+        }
+    }
+    pub fn get_only_dir(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.only_dir || options.get_flag("only_dir")
+    }
+
+    pub fn get_print_errors(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.print_errors || options.get_flag("print_errors")
+    }
+    pub fn get_only_file(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.only_file || options.get_flag("only_file")
+    }
+    pub fn get_bars_on_right(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.bars_on_right || options.get_flag("bars_on_right")
+    }
+    pub fn get_custom_stack_size(&self, options: &ArgMatches) -> Option<usize> {
+        let from_cmd_line = options.get_one::<usize>("stack_size");
+        if from_cmd_line.is_none() {
+            self.stack_size
+        } else {
+            from_cmd_line.copied()
+        }
+    }
+    pub fn get_threads(&self, options: &ArgMatches) -> Option<usize> {
+        let from_cmd_line = options.get_one::<usize>("threads");
+        if from_cmd_line.is_none() {
+            self.threads
+        } else {
+            from_cmd_line.copied()
+        }
+    }
+    pub fn get_output_json(&self, options: &ArgMatches) -> bool {
+        Some(true) == self.output_json || options.get_flag("output_json")
+    }
+
+    pub fn get_modified_time_operator(&self, options: &ArgMatches) -> Option<(Operator, i64)> {
+        get_filter_time_operator(
+            options.get_one::<String>("mtime"),
+            get_current_date_epoch_seconds(),
+        )
+    }
+
+    pub fn get_accessed_time_operator(&self, options: &ArgMatches) -> Option<(Operator, i64)> {
+        get_filter_time_operator(
+            options.get_one::<String>("atime"),
+            get_current_date_epoch_seconds(),
+        )
+    }
+
+    pub fn get_changed_time_operator(&self, options: &ArgMatches) -> Option<(Operator, i64)> {
+        get_filter_time_operator(
+            options.get_one::<String>("ctime"),
+            get_current_date_epoch_seconds(),
+        )
+    }
+}
+
+fn get_current_date_epoch_seconds() -> i64 {
+    // calculate current date epoch seconds
+    let now = Local::now();
+    let current_date = now.date_naive();
+
+    let current_date_time = current_date.and_hms_opt(0, 0, 0).unwrap();
+    Local
+        .from_local_datetime(&current_date_time)
+        .unwrap()
+        .timestamp()
+}
+
+fn get_filter_time_operator(
+    option_value: Option<&String>,
+    current_date_epoch_seconds: i64,
+) -> Option<(Operator, i64)> {
+    match option_value {
+        Some(val) => {
+            let time = current_date_epoch_seconds
+                - val
+                    .parse::<i64>()
+                    .unwrap_or_else(|_| panic!("invalid data format"))
+                    .abs()
+                    * DAY_SECONDS;
+            match val.chars().next().expect("Value should not be empty") {
+                '+' => Some((Operator::LessThan, time - DAY_SECONDS)),
+                '-' => Some((Operator::GreaterThan, time)),
+                _ => Some((Operator::Equal, time - DAY_SECONDS)),
+            }
+        }
+        None => None,
+    }
+}
+
+fn convert_min_size(input: &str) -> Option<usize> {
+    let re = Regex::new(r"([0-9]+)(\w*)").unwrap();
+
+    if let Some(cap) = re.captures(input) {
+        let (_, [digits, letters]) = cap.extract();
+
+        // Failure to parse should be impossible due to regex match
+        let digits_as_usize: Option<usize> = digits.parse().ok();
+
+        match digits_as_usize {
+            Some(parsed_digits) => {
+                let number_format = get_number_format(&letters.to_lowercase());
+                match number_format {
+                    Some((multiple, _)) => Some(parsed_digits * (multiple as usize)),
+                    None => {
+                        if letters.is_empty() {
+                            Some(parsed_digits)
+                        } else {
+                            eprintln!("Ignoring invalid min-size: {input}");
+                            None
+                        }
+                    }
+                }
+            }
+            None => None,
+        }
+    } else {
+        None
+    }
+}
+
+fn get_config_locations(base: &Path) -> Vec<PathBuf> {
+    vec![
+        base.join(".dust.toml"),
+        base.join(".config").join("dust").join("config.toml"),
+    ]
+}
+
+pub fn get_config(conf_path: Option<String>) -> Config {
+    match conf_path {
+        Some(path_str) => {
+            let path = Path::new(&path_str);
+            if path.exists() {
+                match Config::from_config_file(path) {
+                    Ok(config) => return config,
+                    Err(e) => {
+                        eprintln!("Ignoring invalid config file '{}': {}", &path.display(), e)
+                    }
+                }
+            } else {
+                eprintln!("Config file {:?} doesn't exists", &path.display());
+            }
+        }
+        None => {
+            if let Some(home) = directories::BaseDirs::new() {
+                for path in get_config_locations(home.home_dir()) {
+                    if path.exists() {
+                        if let Ok(config) = Config::from_config_file(&path) {
+                            return config;
+                        }
+                    }
+                }
+            }
+        }
+    }
+    Config {
+        ..Default::default()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    #[allow(unused_imports)]
+    use super::*;
+    use chrono::{Datelike, Timelike};
+    use clap::builder::PossibleValue;
+    use clap::{value_parser, Arg, ArgMatches, Command};
+
+    #[test]
+    fn test_get_current_date_epoch_seconds() {
+        let epoch_seconds = get_current_date_epoch_seconds();
+        let dt = Local.timestamp_opt(epoch_seconds, 0).unwrap();
+
+        assert_eq!(dt.hour(), 0);
+        assert_eq!(dt.minute(), 0);
+        assert_eq!(dt.second(), 0);
+        assert_eq!(dt.date_naive().day(), Local::now().date_naive().day());
+        assert_eq!(dt.date_naive().month(), Local::now().date_naive().month());
+        assert_eq!(dt.date_naive().year(), Local::now().date_naive().year());
+    }
+
+    #[test]
+    fn test_conversion() {
+        assert_eq!(convert_min_size("55"), Some(55));
+        assert_eq!(convert_min_size("12344321"), Some(12344321));
+        assert_eq!(convert_min_size("95RUBBISH"), None);
+        assert_eq!(convert_min_size("10Ki"), Some(10 * 1024));
+        assert_eq!(convert_min_size("10MiB"), Some(10 * 1024usize.pow(2)));
+        assert_eq!(convert_min_size("10M"), Some(10 * 1024usize.pow(2)));
+        assert_eq!(convert_min_size("10Mb"), Some(10 * 1000usize.pow(2)));
+        assert_eq!(convert_min_size("2Gi"), Some(2 * 1024usize.pow(3)));
+    }
+
+    #[test]
+    fn test_min_size_from_config_applied_or_overridden() {
+        let c = Config {
+            min_size: Some("1KiB".to_owned()),
+            ..Default::default()
+        };
+        assert_eq!(c._get_min_size(None), Some(1024));
+        assert_eq!(c._get_min_size(Some(&"2KiB".into())), Some(2048));
+
+        assert_eq!(c._get_min_size(Some(&"1kb".into())), Some(1000));
+        assert_eq!(c._get_min_size(Some(&"2KB".into())), Some(2000));
+    }
+
+    #[test]
+    fn test_get_depth() {
+        // No config and no flag.
+        let c = Config::default();
+        let args = get_args(vec![]);
+        assert_eq!(c.get_depth(&args), usize::MAX);
+
+        // Config is not defined and flag is defined.
+        let c = Config::default();
+        let args = get_args(vec!["dust", "--depth", "5"]);
+        assert_eq!(c.get_depth(&args), 5);
+
+        // Config is defined and flag is not defined.
+        let c = Config {
+            depth: Some(3),
+            ..Default::default()
+        };
+        let args = get_args(vec![]);
+        assert_eq!(c.get_depth(&args), 3);
+
+        // Both config and flag are defined.
+        let c = Config {
+            depth: Some(3),
+            ..Default::default()
+        };
+        let args = get_args(vec!["dust", "--depth", "5"]);
+        assert_eq!(c.get_depth(&args), 5);
+    }
+
+    fn get_args(args: Vec<&str>) -> ArgMatches {
+        Command::new("Dust")
+            .arg(
+                Arg::new("depth")
+                    .long("depth")
+                    .num_args(1)
+                    .value_parser(value_parser!(usize)),
+            )
+            .get_matches_from(args)
+    }
+
+    #[test]
+    fn test_get_filetime() {
+        // No config and no flag.
+        let c = Config::default();
+        let args = get_filetime_args(vec!["dust"]);
+        assert_eq!(c.get_filetime(&args), None);
+
+        // Config is not defined and flag is defined as access time
+        let c = Config::default();
+        let args = get_filetime_args(vec!["dust", "--filetime", "a"]);
+        assert_eq!(c.get_filetime(&args), Some(FileTime::Accessed));
+
+        let c = Config::default();
+        let args = get_filetime_args(vec!["dust", "--filetime", "accessed"]);
+        assert_eq!(c.get_filetime(&args), Some(FileTime::Accessed));
+
+        // Config is not defined and flag is defined as modified time
+        let c = Config::default();
+        let args = get_filetime_args(vec!["dust", "--filetime", "m"]);
+        assert_eq!(c.get_filetime(&args), Some(FileTime::Modified));
+
+        let c = Config::default();
+        let args = get_filetime_args(vec!["dust", "--filetime", "modified"]);
+        assert_eq!(c.get_filetime(&args), Some(FileTime::Modified));
+
+        // Config is not defined and flag is defined as changed time
+        let c = Config::default();
+        let args = get_filetime_args(vec!["dust", "--filetime", "c"]);
+        assert_eq!(c.get_filetime(&args), Some(FileTime::Changed));
+
+        let c = Config::default();
+        let args = get_filetime_args(vec!["dust", "--filetime", "changed"]);
+        assert_eq!(c.get_filetime(&args), Some(FileTime::Changed));
+    }
+
+    fn get_filetime_args(args: Vec<&str>) -> ArgMatches {
+        Command::new("Dust")
+        .arg(
+            Arg::new("filetime")
+                .short('m')
+                .long("filetime")
+                .num_args(1)
+                .value_parser([
+                    PossibleValue::new("a").alias("accessed"),
+                    PossibleValue::new("c").alias("changed"),
+                    PossibleValue::new("m").alias("modified"),
+                ])
+                .help("Directory 'size' is max filetime of child files instead of disk size. while a/c/m for accessed/changed/modified time"),
+        )
+            .get_matches_from(args)
+    }
+}

src/dir_walker.rs

@@ -1,94 +1,164 @@
+use std::cmp::Ordering;
 use std::fs;
+use std::io::Error;
+use std::sync::Arc;
+use std::sync::Mutex;
 
 use crate::node::Node;
+use crate::progress::Operation;
+use crate::progress::PAtomicInfo;
+use crate::progress::RuntimeErrors;
+use crate::progress::ORDERING;
+use crate::utils::is_filtered_out_due_to_file_time;
 use crate::utils::is_filtered_out_due_to_invert_regex;
 use crate::utils::is_filtered_out_due_to_regex;
 use rayon::iter::ParallelBridge;
 use rayon::prelude::ParallelIterator;
 use regex::Regex;
+use std::path::Path;
 use std::path::PathBuf;
 
-use std::sync::atomic;
-use std::sync::atomic::AtomicBool;
-
 use std::collections::HashSet;
 
 use crate::node::build_node;
 use std::fs::DirEntry;
 
+use crate::node::FileTime;
 use crate::platform::get_metadata;
 
+#[derive(Debug)]
+pub enum Operator {
+    Equal = 0,
+    LessThan = 1,
+    GreaterThan = 2,
+}
+
 pub struct WalkData<'a> {
     pub ignore_directories: HashSet<PathBuf>,
     pub filter_regex: &'a [Regex],
     pub invert_filter_regex: &'a [Regex],
     pub allowed_filesystems: HashSet<u64>,
+    pub filter_modified_time: Option<(Operator, i64)>,
+    pub filter_accessed_time: Option<(Operator, i64)>,
+    pub filter_changed_time: Option<(Operator, i64)>,
     pub use_apparent_size: bool,
     pub by_filecount: bool,
+    pub by_filetime: &'a Option<FileTime>,
     pub ignore_hidden: bool,
+    pub follow_links: bool,
+    pub progress_data: Arc<PAtomicInfo>,
+    pub errors: Arc<Mutex<RuntimeErrors>>,
 }
 
-pub fn walk_it(dirs: HashSet<PathBuf>, walk_data: WalkData) -> (Vec<Node>, bool) {
-    let permissions_flag = AtomicBool::new(false);
-
+pub fn walk_it(dirs: HashSet<PathBuf>, walk_data: &WalkData) -> Vec<Node> {
+    let mut inodes = HashSet::new();
     let top_level_nodes: Vec<_> = dirs
         .into_iter()
         .filter_map(|d| {
-            let n = walk(d, &permissions_flag, &walk_data);
-            match n {
-                Some(n) => {
-                    let mut inodes: HashSet<(u64, u64)> = HashSet::new();
-                    clean_inodes(n, &mut inodes, walk_data.use_apparent_size)
-                }
-                None => None,
-            }
+            let prog_data = &walk_data.progress_data;
+            prog_data.clear_state(&d);
+            let node = walk(d, walk_data, 0)?;
+
+            prog_data.state.store(Operation::PREPARING, ORDERING);
+
+            clean_inodes(node, &mut inodes, walk_data)
         })
         .collect();
-    (top_level_nodes, permissions_flag.into_inner())
+    top_level_nodes
 }
 
 // Remove files which have the same inode, we don't want to double count them.
-fn clean_inodes(
-    x: Node,
-    inodes: &mut HashSet<(u64, u64)>,
-    use_apparent_size: bool,
-) -> Option<Node> {
-    if !use_apparent_size {
+fn clean_inodes(x: Node, inodes: &mut HashSet<(u64, u64)>, walk_data: &WalkData) -> Option<Node> {
+    if !walk_data.use_apparent_size {
         if let Some(id) = x.inode_device {
-            if inodes.contains(&id) {
+            if !inodes.insert(id) {
                 return None;
             }
-            inodes.insert(id);
         }
     }
 
-    let new_children: Vec<_> = x
-        .children
+    // Sort Nodes so iteration order is predictable
+    let mut tmp: Vec<_> = x.children;
+    tmp.sort_by(sort_by_inode);
+    let new_children: Vec<_> = tmp
         .into_iter()
-        .filter_map(|c| clean_inodes(c, inodes, use_apparent_size))
+        .filter_map(|c| clean_inodes(c, inodes, walk_data))
         .collect();
 
-    return Some(Node {
+    let actual_size = if walk_data.by_filetime.is_some() {
+        // If by_filetime is Some, directory 'size' is the maximum filetime among child files instead of disk size
+        new_children
+            .iter()
+            .map(|c| c.size)
+            .chain(std::iter::once(x.size))
+            .max()
+            .unwrap_or(0)
+    } else {
+        // If by_filetime is None, directory 'size' is the sum of disk sizes or file counts of child files
+        x.size + new_children.iter().map(|c| c.size).sum::<u64>()
+    };
+
+    Some(Node {
         name: x.name,
-        size: x.size + new_children.iter().map(|c| c.size).sum::<u64>(),
+        size: actual_size,
         children: new_children,
         inode_device: x.inode_device,
-    });
+        depth: x.depth,
+    })
+}
+
+fn sort_by_inode(a: &Node, b: &Node) -> std::cmp::Ordering {
+    // Sorting by inode is quicker than by sorting by name/size
+    match (a.inode_device, b.inode_device) {
+        (Some(x), Some(y)) => {
+            if x.0 != y.0 {
+                x.0.cmp(&y.0)
+            } else if x.1 != y.1 {
+                x.1.cmp(&y.1)
+            } else {
+                a.name.cmp(&b.name)
+            }
+        }
+        (Some(_), None) => Ordering::Greater,
+        (None, Some(_)) => Ordering::Less,
+        (None, None) => a.name.cmp(&b.name),
+    }
 }
 
 fn ignore_file(entry: &DirEntry, walk_data: &WalkData) -> bool {
     let is_dot_file = entry.file_name().to_str().unwrap_or("").starts_with('.');
     let is_ignored_path = walk_data.ignore_directories.contains(&entry.path());
+    let follow_links = walk_data.follow_links && entry.file_type().is_ok_and(|ft| ft.is_symlink());
 
     if !walk_data.allowed_filesystems.is_empty() {
-        let size_inode_device = get_metadata(&entry.path(), false);
-
-        if let Some((_size, Some((_id, dev)))) = size_inode_device {
+        let size_inode_device = get_metadata(entry.path(), false, follow_links);
+        if let Some((_size, Some((_id, dev)), _gunk)) = size_inode_device {
             if !walk_data.allowed_filesystems.contains(&dev) {
                 return true;
             }
         }
     }
+    if walk_data.filter_accessed_time.is_some()
+        || walk_data.filter_modified_time.is_some()
+        || walk_data.filter_changed_time.is_some()
+    {
+        let size_inode_device = get_metadata(entry.path(), false, follow_links);
+        if let Some((_, _, (modified_time, accessed_time, changed_time))) = size_inode_device {
+            if entry.path().is_file()
+                && [
+                    (&walk_data.filter_modified_time, modified_time),
+                    (&walk_data.filter_accessed_time, accessed_time),
+                    (&walk_data.filter_changed_time, changed_time),
+                ]
+                .iter()
+                .any(|(filter_time, actual_time)| {
+                    is_filtered_out_due_to_file_time(filter_time, *actual_time)
+                })
+            {
+                return true;
+            }
+        }
+    }
 
     // Keeping `walk_data.filter_regex.is_empty()` is important for performance reasons, it stops unnecessary work
     if !walk_data.filter_regex.is_empty()
@@ -108,60 +178,129 @@ fn ignore_file(entry: &DirEntry, walk_data: &WalkData) -> bool {
     (is_dot_file && walk_data.ignore_hidden) || is_ignored_path
 }
 
-fn walk(dir: PathBuf, permissions_flag: &AtomicBool, walk_data: &WalkData) -> Option<Node> {
-    let mut children = vec![];
+fn walk(dir: PathBuf, walk_data: &WalkData, depth: usize) -> Option<Node> {
+    let prog_data = &walk_data.progress_data;
+    let errors = &walk_data.errors;
 
-    if let Ok(entries) = fs::read_dir(dir.clone()) {
-        children = entries
-            .into_iter()
-            .par_bridge()
-            .filter_map(|entry| {
-                if let Ok(ref entry) = entry {
-                    // uncommenting the below line gives simpler code but
-                    // rayon doesn't parallelise as well giving a 3X performance drop
-                    // hence we unravel the recursion a bit
-
-                    // return walk(entry.path(), permissions_flag, ignore_directories, allowed_filesystems, use_apparent_size, by_filecount, ignore_hidden);
-
-                    if !ignore_file(entry, walk_data) {
-                        if let Ok(data) = entry.file_type() {
-                            if data.is_dir() && !data.is_symlink() {
-                                return walk(entry.path(), permissions_flag, walk_data);
-                            }
-                            return build_node(
-                                entry.path(),
-                                vec![],
-                                walk_data.filter_regex,
-                                walk_data.invert_filter_regex,
-                                walk_data.use_apparent_size,
-                                data.is_symlink(),
-                                data.is_file(),
-                                walk_data.by_filecount,
-                            );
-                        }
-                    }
-                } else {
-                    permissions_flag.store(true, atomic::Ordering::Relaxed);
-                }
-                None
-            })
-            .collect();
-    } else {
-        permissions_flag.store(true, atomic::Ordering::Relaxed);
+    if errors.lock().unwrap().abort {
+        return None;
     }
-    build_node(
-        dir,
-        children,
-        walk_data.filter_regex,
-        walk_data.invert_filter_regex,
-        walk_data.use_apparent_size,
-        false,
-        false,
-        walk_data.by_filecount,
-    )
+
+    let children = if dir.is_dir() {
+        let read_dir = fs::read_dir(&dir);
+        match read_dir {
+            Ok(entries) => {
+                entries
+                    .into_iter()
+                    .par_bridge()
+                    .filter_map(|entry| {
+                        match entry {
+                            Ok(ref entry) => {
+                                // uncommenting the below line gives simpler code but
+                                // rayon doesn't parallelize as well giving a 3X performance drop
+                                // hence we unravel the recursion a bit
+
+                                // return walk(entry.path(), walk_data, depth)
+
+                                if !ignore_file(entry, walk_data) {
+                                    if let Ok(data) = entry.file_type() {
+                                        if data.is_dir()
+                                            || (walk_data.follow_links && data.is_symlink())
+                                        {
+                                            return walk(entry.path(), walk_data, depth + 1);
+                                        }
+
+                                        let node = build_node(
+                                            entry.path(),
+                                            vec![],
+                                            data.is_symlink(),
+                                            data.is_file(),
+                                            depth,
+                                            walk_data,
+                                        );
+
+                                        prog_data.num_files.fetch_add(1, ORDERING);
+                                        if let Some(ref file) = node {
+                                            prog_data
+                                                .total_file_size
+                                                .fetch_add(file.size, ORDERING);
+                                        }
+
+                                        return node;
+                                    }
+                                }
+                            }
+                            Err(ref failed) => {
+                                if handle_error_and_retry(failed, &dir, walk_data) {
+                                    return walk(dir.clone(), walk_data, depth);
+                                }
+                            }
+                        }
+                        None
+                    })
+                    .collect()
+            }
+            Err(failed) => {
+                if handle_error_and_retry(&failed, &dir, walk_data) {
+                    return walk(dir, walk_data, depth);
+                } else {
+                    vec![]
+                }
+            }
+        }
+    } else {
+        if !dir.is_file() {
+            let mut editable_error = errors.lock().unwrap();
+            let bad_file = dir.as_os_str().to_string_lossy().into();
+            editable_error.file_not_found.insert(bad_file);
+        }
+        vec![]
+    };
+    let is_symlink = if walk_data.follow_links {
+        match fs::symlink_metadata(&dir) {
+            Ok(metadata) => metadata.file_type().is_symlink(),
+            Err(_) => false,
+        }
+    } else {
+        false
+    };
+    build_node(dir, children, is_symlink, false, depth, walk_data)
+}
+
+fn handle_error_and_retry(failed: &Error, dir: &Path, walk_data: &WalkData) -> bool {
+    let mut editable_error = walk_data.errors.lock().unwrap();
+    match failed.kind() {
+        std::io::ErrorKind::PermissionDenied => {
+            editable_error
+                .no_permissions
+                .insert(dir.to_string_lossy().into());
+        }
+        std::io::ErrorKind::InvalidInput => {
+            editable_error
+                .no_permissions
+                .insert(dir.to_string_lossy().into());
+        }
+        std::io::ErrorKind::NotFound => {
+            editable_error.file_not_found.insert(failed.to_string());
+        }
+        std::io::ErrorKind::Interrupted => {
+            let mut editable_error = walk_data.errors.lock().unwrap();
+            editable_error.interrupted_error += 1;
+            if editable_error.interrupted_error > 3 {
+                panic!("Multiple Interrupted Errors occurred while scanning filesystem. Aborting");
+            } else {
+                return true;
+            }
+        }
+        _ => {
+            editable_error.unknown_error.insert(failed.to_string());
+        }
+    }
+    false
 }
 
 mod tests {
+
     #[allow(unused_imports)]
     use super::*;
 
@@ -172,28 +311,101 @@ mod tests {
             size: 10,
             children: vec![],
             inode_device: Some((5, 6)),
+            depth: 0,
+        }
+    }
+
+    #[cfg(test)]
+    fn create_walker<'a>(use_apparent_size: bool) -> WalkData<'a> {
+        use crate::PIndicator;
+        let indicator = PIndicator::build_me();
+        WalkData {
+            ignore_directories: HashSet::new(),
+            filter_regex: &[],
+            invert_filter_regex: &[],
+            allowed_filesystems: HashSet::new(),
+            filter_modified_time: Some((Operator::GreaterThan, 0)),
+            filter_accessed_time: Some((Operator::GreaterThan, 0)),
+            filter_changed_time: Some((Operator::GreaterThan, 0)),
+            use_apparent_size,
+            by_filecount: false,
+            by_filetime: &None,
+            ignore_hidden: false,
+            follow_links: false,
+            progress_data: indicator.data.clone(),
+            errors: Arc::new(Mutex::new(RuntimeErrors::default())),
         }
     }
 
     #[test]
+    #[allow(clippy::redundant_clone)]
     fn test_should_ignore_file() {
         let mut inodes = HashSet::new();
         let n = create_node();
+        let walkdata = create_walker(false);
 
         // First time we insert the node
-        assert!(clean_inodes(n.clone(), &mut inodes, false) == Some(n.clone()));
+        assert_eq!(
+            clean_inodes(n.clone(), &mut inodes, &walkdata),
+            Some(n.clone())
+        );
 
         // Second time is a duplicate - we ignore it
-        assert!(clean_inodes(n.clone(), &mut inodes, false) == None);
+        assert_eq!(clean_inodes(n.clone(), &mut inodes, &walkdata), None);
     }
 
     #[test]
+    #[allow(clippy::redundant_clone)]
     fn test_should_not_ignore_files_if_using_apparent_size() {
         let mut inodes = HashSet::new();
         let n = create_node();
+        let walkdata = create_walker(true);
 
         // If using apparent size we include Nodes, even if duplicate inodes
-        assert!(clean_inodes(n.clone(), &mut inodes, true) == Some(n.clone()));
-        assert!(clean_inodes(n.clone(), &mut inodes, true) == Some(n.clone()));
+        assert_eq!(
+            clean_inodes(n.clone(), &mut inodes, &walkdata),
+            Some(n.clone())
+        );
+        assert_eq!(
+            clean_inodes(n.clone(), &mut inodes, &walkdata),
+            Some(n.clone())
+        );
+    }
+
+    #[test]
+    fn test_total_ordering_of_sort_by_inode() {
+        use std::str::FromStr;
+
+        let a = Node {
+            name: PathBuf::from_str("a").unwrap(),
+            size: 0,
+            children: vec![],
+            inode_device: Some((3, 66310)),
+            depth: 0,
+        };
+
+        let b = Node {
+            name: PathBuf::from_str("b").unwrap(),
+            size: 0,
+            children: vec![],
+            inode_device: None,
+            depth: 0,
+        };
+
+        let c = Node {
+            name: PathBuf::from_str("c").unwrap(),
+            size: 0,
+            children: vec![],
+            inode_device: Some((1, 66310)),
+            depth: 0,
+        };
+
+        assert_eq!(sort_by_inode(&a, &b), Ordering::Greater);
+        assert_eq!(sort_by_inode(&a, &c), Ordering::Greater);
+        assert_eq!(sort_by_inode(&c, &b), Ordering::Greater);
+
+        assert_eq!(sort_by_inode(&b, &a), Ordering::Less);
+        assert_eq!(sort_by_inode(&c, &a), Ordering::Less);
+        assert_eq!(sort_by_inode(&b, &c), Ordering::Less);
     }
 }

src/display.rs

@@ -1,39 +1,53 @@
-extern crate ansi_term;
-
 use crate::display_node::DisplayNode;
+use crate::node::FileTime;
 
-use self::ansi_term::Colour::Red;
+use ansi_term::Colour::Red;
 use lscolors::{LsColors, Style};
 
 use unicode_width::UnicodeWidthStr;
 
 use stfu8::encode_u8;
 
+use chrono::{DateTime, Local, TimeZone, Utc};
 use std::cmp::max;
 use std::cmp::min;
+use std::collections::HashMap;
+use std::collections::HashSet;
+use std::collections::VecDeque;
 use std::fs;
+use std::hash::Hash;
 use std::iter::repeat;
+use std::os::unix::ffi::OsStrExt;
 use std::path::Path;
 use thousands::Separable;
 
-static UNITS: [char; 4] = ['T', 'G', 'M', 'K'];
+pub static UNITS: [char; 5] = ['P', 'T', 'G', 'M', 'K'];
 static BLOCKS: [char; 5] = ['█', '▓', '▒', '░', ' '];
+const FILETIME_SHOW_LENGTH: usize = 19;
 
-pub struct DisplayData {
+pub struct InitialDisplayData {
     pub short_paths: bool,
     pub is_reversed: bool,
     pub colors_on: bool,
     pub by_filecount: bool,
+    pub by_filetime: Option<FileTime>,
+    pub is_screen_reader: bool,
+    pub output_format: String,
+    pub bars_on_right: bool,
+}
+
+pub struct DisplayData {
+    pub initial: InitialDisplayData,
     pub num_chars_needed_on_left_most: usize,
     pub base_size: u64,
     pub longest_string_length: usize,
     pub ls_colors: LsColors,
-    pub iso: bool,
+    pub duplicate_names: HashMap<String, u32>,
 }
 
 impl DisplayData {
     fn get_tree_chars(&self, was_i_last: bool, has_children: bool) -> &'static str {
-        match (self.is_reversed, was_i_last, has_children) {
+        match (self.initial.is_reversed, was_i_last, has_children) {
             (true, true, true) => "┌─┴",
             (true, true, false) => "┌──",
             (true, false, true) => "├─┴",
@@ -46,7 +60,7 @@ impl DisplayData {
     }
 
     fn is_biggest(&self, num_siblings: usize, max_siblings: u64) -> bool {
-        if self.is_reversed {
+        if self.initial.is_reversed {
             num_siblings == (max_siblings - 1) as usize
         } else {
             num_siblings == 0
@@ -54,7 +68,7 @@ impl DisplayData {
     }
 
     fn is_last(&self, num_siblings: usize, max_siblings: u64) -> bool {
-        if self.is_reversed {
+        if self.initial.is_reversed {
             num_siblings == 0
         } else {
             num_siblings == (max_siblings - 1) as usize
@@ -85,14 +99,23 @@ impl DrawData<'_> {
 
     // TODO: can we test this?
     fn generate_bar(&self, node: &DisplayNode, level: usize) -> String {
+        if self.display_data.initial.is_screen_reader {
+            return level.to_string();
+        }
         let chars_in_bar = self.percent_bar.chars().count();
         let num_bars = chars_in_bar as f32 * self.display_data.percent_size(node);
         let mut num_not_my_bar = (chars_in_bar as i32) - num_bars as i32;
 
         let mut new_bar = "".to_string();
-        let idx = 5 - min(4, max(1, level));
+        let idx = 5 - level.clamp(1, 4);
 
-        for c in self.percent_bar.chars() {
+        let itr: Box<dyn Iterator<Item = char>> = if self.display_data.initial.bars_on_right {
+            Box::new(self.percent_bar.chars())
+        } else {
+            Box::new(self.percent_bar.chars().rev())
+        };
+
+        for c in itr {
             num_not_my_bar -= 1;
             if num_not_my_bar <= 0 {
                 new_bar.push(BLOCKS[0]);
@@ -102,26 +125,31 @@ impl DrawData<'_> {
                 new_bar.push(c);
             }
         }
-        new_bar
+        if self.display_data.initial.bars_on_right {
+            new_bar
+        } else {
+            new_bar.chars().rev().collect()
+        }
     }
 }
 
-#[allow(clippy::too_many_arguments)]
 pub fn draw_it(
-    use_full_path: bool,
-    is_reversed: bool,
-    no_colors: bool,
-    no_percents: bool,
+    idd: InitialDisplayData,
+    no_percent_bars: bool,
     terminal_width: usize,
-    by_filecount: bool,
-    root_node: DisplayNode,
-    iso: bool,
+    root_node: &DisplayNode,
+    skip_total: bool,
 ) {
-    let num_chars_needed_on_left_most = if by_filecount {
+
+    let duplicate_names = check_for_dup_names(&root_node);
+
+    let num_chars_needed_on_left_most = if idd.by_filecount {
         let max_size = root_node.size;
         max_size.separate_with_commas().chars().count()
+    } else if idd.by_filetime.is_some() {
+        FILETIME_SHOW_LENGTH
     } else {
-        5 // Under normal usage we need 5 chars to display the size of a directory
+        find_biggest_size_str(root_node, &idd.output_format)
     };
 
     assert!(
@@ -129,77 +157,174 @@ pub fn draw_it(
         "Not enough terminal width"
     );
 
+    // let duplicate_dir_names = find_duplicate_names(root_node, idd.short_paths);
+
     let allowed_width = terminal_width - num_chars_needed_on_left_most - 2;
     let num_indent_chars = 3;
     let longest_string_length =
-        find_longest_dir_name(&root_node, num_indent_chars, allowed_width, !use_full_path);
+        find_longest_dir_name(root_node, num_indent_chars, allowed_width, &idd, &duplicate_names);
 
-    let max_bar_length = if no_percents || longest_string_length + 7 >= allowed_width as usize {
+    let max_bar_length = if no_percent_bars || longest_string_length + 7 >= allowed_width {
         0
     } else {
-        allowed_width as usize - longest_string_length - 7
+        allowed_width - longest_string_length - 7
     };
 
-    let first_size_bar = repeat(BLOCKS[0]).take(max_bar_length).collect::<String>();
+    let first_size_bar = repeat(BLOCKS[0]).take(max_bar_length).collect();
 
     let display_data = DisplayData {
-        short_paths: !use_full_path,
-        is_reversed,
-        colors_on: !no_colors,
-        by_filecount,
+        initial: idd,
         num_chars_needed_on_left_most,
         base_size: root_node.size,
         longest_string_length,
         ls_colors: LsColors::from_env().unwrap_or_default(),
-        iso,
+        duplicate_names
     };
     let draw_data = DrawData {
         indent: "".to_string(),
         percent_bar: first_size_bar,
         display_data: &display_data,
     };
-    display_node(root_node, &draw_data, true, true);
+
+    if !skip_total {
+        display_node(root_node, &draw_data, true, true);
+    } else {
+        for (count, c) in root_node
+            .get_children_from_node(draw_data.display_data.initial.is_reversed)
+            .enumerate()
+        {
+            let is_biggest = display_data.is_biggest(count, root_node.num_siblings());
+            let was_i_last = display_data.is_last(count, root_node.num_siblings());
+            display_node(c, &draw_data, is_biggest, was_i_last);
+        }
+    }
+}
+fn check_for_dup_names(result:&DisplayNode) -> HashMap<String, u32> {
+    let mut names = HashMap::new();
+    let mut dup_names = HashMap::new();
+    // let empty = HashSet::new();
+
+    let mut results = VecDeque::new();
+    results.push_back((result, 0));
+
+    while results.len() > 0 {
+        let (current, level) = results.pop_front().unwrap();
+
+        let mut folders = current.name.iter().rev(); 
+        let mut s = String::new();
+
+        // Look at parent folder names - if they differ and we are printing them
+        // we dont need the helper
+        for _ in  0..level {
+            s.push_str( &encode_u8(folders.next().unwrap().as_bytes()));
+        }
+
+        if names.contains_key(&s){
+            // TODO: compare s with names[s] 
+            // and walk back until you find a difference.
+            dup_names.insert(s, level);
+        } else {
+            names.insert(s, vec![&current.name]);
+        }
+
+        current.children.iter().for_each(|node| {results.push_back((&node, level+1));});
+    }
+    println!("{:?}", names);
+    println!("{:?}", dup_names);
+    dup_names
+}
+
+
+pub fn get_printable_name(node: &DisplayNode, short_paths: bool, dup_names: &HashMap<String, u32>) -> String {
+    let dir_name = &node.name;
+    let printable_name = {
+        if short_paths {
+            match dir_name.parent() {
+                Some(prefix) => match dir_name.strip_prefix(prefix) {
+                    Ok(base) => base,
+                    Err(_) => dir_name,
+                },
+                None => dir_name,
+            }
+        } else {
+            dir_name
+        }
+    };
+    let core = encode_u8(printable_name.display().to_string().as_bytes());
+
+    if dup_names.contains_key(&core) {
+        let level = dup_names[&core];
+
+        let mut folders = node.name.iter().rev(); 
+        folders.next();
+        let mut extra = VecDeque::new();
+        for _ in (0..level){
+            extra.push_back( encode_u8(folders.next().unwrap().as_bytes()) );
+        }
+        let h = extra.iter().fold(String::new(), |acc, entry| {
+            acc + entry
+        });
+        // let helper = extra.make_contiguous().iter().collect::<Vec<&String>>();
+        // let h = helper.join("/");
+
+        // let mut folders = dir_name.iter().rev(); //.next().next().unwrap();
+        // folders.next();
+        // let par = encode_u8(folders.next().unwrap().as_bytes());
+        format!("{core} ({h})")
+    } else {
+        core
+    }
+}
+
+fn find_biggest_size_str(node: &DisplayNode, output_format: &str) -> usize {
+    let mut mx = human_readable_number(node.size, output_format)
+        .chars()
+        .count();
+    for n in node.children.iter() {
+        mx = max(mx, find_biggest_size_str(n, output_format));
+    }
+    mx
 }
 
 fn find_longest_dir_name(
     node: &DisplayNode,
     indent: usize,
     terminal: usize,
-    long_paths: bool,
+    idd: &InitialDisplayData,
+    dup_names: &HashMap<String, u32>,
 ) -> usize {
-    let printable_name = get_printable_name(&node.name, long_paths);
-    let longest = min(
-        UnicodeWidthStr::width(&*printable_name) + 1 + indent,
-        terminal,
-    );
+    let printable_name = get_printable_name(&node, idd.short_paths, dup_names);
+
+    let longest = if idd.is_screen_reader {
+        UnicodeWidthStr::width(&*printable_name) + 1
+    } else {
+        min(
+            UnicodeWidthStr::width(&*printable_name) + 1 + indent,
+            terminal,
+        )
+    };
 
     // each none root tree drawing is 2 more chars, hence we increment indent by 2
     node.children
         .iter()
-        .map(|c| find_longest_dir_name(c, indent + 2, terminal, long_paths))
+        .map(|c| find_longest_dir_name(c, indent + 2, terminal, idd, dup_names))
         .fold(longest, max)
 }
 
-fn display_node(node: DisplayNode, draw_data: &DrawData, is_biggest: bool, is_last: bool) {
+fn display_node(node: &DisplayNode, draw_data: &DrawData, is_biggest: bool, is_last: bool) {
     // hacky way of working out how deep we are in the tree
     let indent = draw_data.get_new_indent(!node.children.is_empty(), is_last);
     let level = ((indent.chars().count() - 1) / 2) - 1;
-    let bar_text = draw_data.generate_bar(&node, level);
+    let bar_text = draw_data.generate_bar(node, level);
 
-    let to_print = format_string(
-        &node,
-        &*indent,
-        &*bar_text,
-        is_biggest,
-        draw_data.display_data,
-    );
+    let to_print = format_string(node, &indent, &bar_text, is_biggest, draw_data.display_data);
 
-    if !draw_data.display_data.is_reversed {
-        println!("{}", to_print)
+    if !draw_data.display_data.initial.is_reversed {
+        println!("{to_print}")
     }
 
     let dd = DrawData {
-        indent: clean_indentation_string(&*indent),
+        indent: clean_indentation_string(&indent),
         percent_bar: bar_text,
         display_data: draw_data.display_data,
     };
@@ -207,7 +332,7 @@ fn display_node(node: DisplayNode, draw_data: &DrawData, is_biggest: bool, is_la
     let num_siblings = node.num_siblings();
 
     for (count, c) in node
-        .get_children_from_node(draw_data.display_data.is_reversed)
+        .get_children_from_node(draw_data.display_data.initial.is_reversed)
         .enumerate()
     {
         let is_biggest = dd.display_data.is_biggest(count, num_siblings);
@@ -215,8 +340,8 @@ fn display_node(node: DisplayNode, draw_data: &DrawData, is_biggest: bool, is_la
         display_node(c, &dd, is_biggest, was_i_last);
     }
 
-    if draw_data.display_data.is_reversed {
-        println!("{}", to_print)
+    if draw_data.display_data.initial.is_reversed {
+        println!("{to_print}")
     }
 }
 
@@ -237,27 +362,9 @@ fn clean_indentation_string(s: &str) -> String {
     is
 }
 
-fn get_printable_name<P: AsRef<Path>>(dir_name: &P, long_paths: bool) -> String {
-    let dir_name = dir_name.as_ref();
-    let printable_name = {
-        if long_paths {
-            match dir_name.parent() {
-                Some(prefix) => match dir_name.strip_prefix(prefix) {
-                    Ok(base) => base,
-                    Err(_) => dir_name,
-                },
-                None => dir_name,
-            }
-        } else {
-            dir_name
-        }
-    };
-    encode_u8(printable_name.display().to_string().as_bytes())
-}
-
 fn pad_or_trim_filename(node: &DisplayNode, indent: &str, display_data: &DisplayData) -> String {
-    let name = get_printable_name(&node.name, display_data.short_paths);
-    let indent_and_name = format!("{} {}", indent, name);
+    let name = get_printable_name(&node, display_data.initial.short_paths, &display_data.duplicate_names);
+    let indent_and_name = format!("{indent} {name}");
     let width = UnicodeWidthStr::width(&*indent_and_name);
 
     assert!(
@@ -293,14 +400,22 @@ fn maybe_trim_filename(name_in: String, indent: &str, display_data: &DisplayData
 pub fn format_string(
     node: &DisplayNode,
     indent: &str,
-    percent_bar: &str,
+    bars: &str,
     is_biggest: bool,
     display_data: &DisplayData,
 ) -> String {
-    let (percents, name_and_padding) = get_name_percent(node, indent, percent_bar, display_data);
+    let (percent, name_and_padding) = get_name_percent(node, indent, bars, display_data);
     let pretty_size = get_pretty_size(node, is_biggest, display_data);
     let pretty_name = get_pretty_name(node, name_and_padding, display_data);
-    format!("{} {} {}{}", pretty_size, indent, pretty_name, percents)
+    // we can clean this and the method below somehow, not sure yet
+    if display_data.initial.is_screen_reader {
+        // if screen_reader then bars is 'depth'
+        format!("{pretty_name} {bars} {pretty_size}{percent}")
+    } else if display_data.initial.by_filetime.is_some() {
+        format!("{pretty_size} {indent}{pretty_name}")
+    } else {
+        format!("{pretty_size} {indent} {pretty_name}{percent}")
+    }
 }
 
 fn get_name_percent(
@@ -309,67 +424,117 @@ fn get_name_percent(
     bar_chart: &str,
     display_data: &DisplayData,
 ) -> (String, String) {
-    if !bar_chart.is_empty() {
-        let percent_size_str = format!("{:.0}%", display_data.percent_size(node) * 100.0);
-        let percents = format!("│{} │ {:>4}", bar_chart, percent_size_str);
+    if display_data.initial.is_screen_reader {
+        let percent = display_data.percent_size(node) * 100.0;
+        let percent_size_str = format!("{percent:.0}%");
+        let percents = format!(" {percent_size_str:>4}",);
+        let name = pad_or_trim_filename(node, "", display_data);
+        (percents, name)
+    // Bar chart being empty may come from either config or the screen not being wide enough
+    } else if !bar_chart.is_empty() {
+        let percent = display_data.percent_size(node) * 100.0;
+        let percent_size_str = format!("{percent:.0}%");
+        let percents = format!("│{bar_chart} │ {percent_size_str:>4}");
         let name_and_padding = pad_or_trim_filename(node, indent, display_data);
         (percents, name_and_padding)
     } else {
-        let n = get_printable_name(&node.name, display_data.short_paths);
+        let n = get_printable_name(&node, display_data.initial.short_paths, &display_data.duplicate_names);
         let name = maybe_trim_filename(n, indent, display_data);
         ("".into(), name)
     }
 }
 
 fn get_pretty_size(node: &DisplayNode, is_biggest: bool, display_data: &DisplayData) -> String {
-    let output = if display_data.by_filecount {
-        let size_as_str = node.size.separate_with_commas();
-        let spaces_to_add =
-            display_data.num_chars_needed_on_left_most - size_as_str.chars().count();
-        size_as_str + " ".repeat(spaces_to_add).as_str()
+    let output = if display_data.initial.by_filecount {
+        node.size.separate_with_commas()
+    } else if display_data.initial.by_filetime.is_some() {
+        get_pretty_file_modified_time(node.size as i64)
     } else {
-        format!("{:>5}", human_readable_number(node.size, display_data.iso))
+        human_readable_number(node.size, &display_data.initial.output_format)
     };
+    let spaces_to_add = display_data.num_chars_needed_on_left_most - output.chars().count();
+    let output = " ".repeat(spaces_to_add) + output.as_str();
 
-    if is_biggest && display_data.colors_on {
+    if is_biggest && display_data.initial.colors_on {
         format!("{}", Red.paint(output))
     } else {
         output
     }
 }
 
+fn get_pretty_file_modified_time(timestamp: i64) -> String {
+    let datetime: DateTime<Utc> = Utc.timestamp_opt(timestamp, 0).unwrap();
+
+    let local_datetime = datetime.with_timezone(&Local);
+
+    local_datetime.format("%Y-%m-%dT%H:%M:%S").to_string()
+}
+
 fn get_pretty_name(
     node: &DisplayNode,
     name_and_padding: String,
     display_data: &DisplayData,
 ) -> String {
-    if display_data.colors_on {
-        let meta_result = fs::metadata(node.name.clone());
+    if display_data.initial.colors_on {
+        let meta_result = fs::metadata(&node.name);
         let directory_color = display_data
             .ls_colors
-            .style_for_path_with_metadata(node.name.clone(), meta_result.as_ref().ok());
+            .style_for_path_with_metadata(&node.name, meta_result.as_ref().ok());
         let ansi_style = directory_color
             .map(Style::to_ansi_term_style)
             .unwrap_or_default();
-        format!("{}", ansi_style.paint(name_and_padding))
+        let out = ansi_style.paint(name_and_padding);
+        format!("{out}")
     } else {
         name_and_padding
     }
 }
 
-fn human_readable_number(size: u64, iso: bool) -> String {
+// If we are working with SI units or not
+pub fn get_type_of_thousand(output_str: &str) -> u64 {
+    if output_str.is_empty() {
+        1024
+    } else if output_str == "si" {
+        1000
+    } else if output_str.contains('i') || output_str.len() == 1 {
+        1024
+    } else {
+        1000
+    }
+}
+
+pub fn get_number_format(output_str: &str) -> Option<(u64, char)> {
+    if output_str.starts_with('b') {
+        return Some((1, 'B'));
+    }
     for (i, u) in UNITS.iter().enumerate() {
-        let num: u64 = if iso { 1000 } else { 1024 };
-        let marker = num.pow((UNITS.len() - i) as u32);
-        if size >= marker {
-            if size / marker < 10 {
-                return format!("{:.1}{}", (size as f32 / marker as f32), u);
-            } else {
-                return format!("{}{}", (size / marker), u);
-            }
+        if output_str.starts_with((*u).to_ascii_lowercase()) {
+            let marker = get_type_of_thousand(output_str).pow((UNITS.len() - i) as u32);
+            return Some((marker, *u));
+        }
+    }
+    None
+}
+
+pub fn human_readable_number(size: u64, output_str: &str) -> String {
+    match get_number_format(output_str) {
+        Some((x, u)) => {
+            format!("{}{}", (size / x), u)
+        }
+        None => {
+            for (i, u) in UNITS.iter().enumerate() {
+                let marker = get_type_of_thousand(output_str).pow((UNITS.len() - i) as u32);
+                if size >= marker {
+                    if size / marker < 10 {
+                        return format!("{:.1}{}", (size as f32 / marker as f32), u);
+                    } else {
+                        return format!("{}{}", (size / marker), u);
+                    }
+                }
+            }
+            format!("{size}B")
         }
     }
-    return format!("{}B", size);
 }
 
 mod tests {
@@ -380,16 +545,22 @@ mod tests {
 
     #[cfg(test)]
     fn get_fake_display_data(longest_string_length: usize) -> DisplayData {
-        DisplayData {
+        let initial = InitialDisplayData {
             short_paths: true,
             is_reversed: false,
             colors_on: false,
             by_filecount: false,
+            by_filetime: None,
+            is_screen_reader: false,
+            output_format: "".into(),
+            bars_on_right: false,
+        };
+        DisplayData {
+            initial,
             num_chars_needed_on_left_most: 5,
-            base_size: 1,
+            base_size: 2_u64.pow(12), // 4.0K
             longest_string_length,
             ls_colors: LsColors::from_env().unwrap_or_default(),
-            iso: false,
         }
     }
 
@@ -403,14 +574,9 @@ mod tests {
         let indent = "┌─┴";
         let percent_bar = "";
         let is_biggest = false;
+        let data = get_fake_display_data(20);
 
-        let s = format_string(
-            &n,
-            indent,
-            percent_bar,
-            is_biggest,
-            &get_fake_display_data(20),
-        );
+        let s = format_string(&n, indent, percent_bar, is_biggest, &data);
         assert_eq!(s, " 4.0K ┌─┴ short");
     }
 
@@ -426,31 +592,160 @@ mod tests {
         let percent_bar = "";
         let is_biggest = false;
 
-        let dd = get_fake_display_data(64);
-        let s = format_string(&n, indent, percent_bar, is_biggest, &dd);
+        let data = get_fake_display_data(64);
+        let s = format_string(&n, indent, percent_bar, is_biggest, &data);
         assert_eq!(
             s,
             " 4.0K ┌─┴ very_long_name_longer_than_the_eighty_character_limit_very_.."
         );
     }
 
+    #[test]
+    fn test_format_str_screen_reader() {
+        let n = DisplayNode {
+            name: PathBuf::from("/short"),
+            size: 2_u64.pow(12), // This is 4.0K
+            children: vec![],
+        };
+        let indent = "";
+        let percent_bar = "3";
+        let is_biggest = false;
+        let mut data = get_fake_display_data(20);
+        data.initial.is_screen_reader = true;
+
+        let s = format_string(&n, indent, percent_bar, is_biggest, &data);
+        assert_eq!(s, "short               3  4.0K 100%");
+    }
+
     #[test]
     fn test_human_readable_number() {
-        assert_eq!(human_readable_number(1, false), "1B");
-        assert_eq!(human_readable_number(956, false), "956B");
-        assert_eq!(human_readable_number(1004, false), "1004B");
-        assert_eq!(human_readable_number(1024, false), "1.0K");
-        assert_eq!(human_readable_number(1536, false), "1.5K");
-        assert_eq!(human_readable_number(1024 * 512, false), "512K");
-        assert_eq!(human_readable_number(1024 * 1024, false), "1.0M");
+        assert_eq!(human_readable_number(1, ""), "1B");
+        assert_eq!(human_readable_number(956, ""), "956B");
+        assert_eq!(human_readable_number(1004, ""), "1004B");
+        assert_eq!(human_readable_number(1024, ""), "1.0K");
+        assert_eq!(human_readable_number(1536, ""), "1.5K");
+        assert_eq!(human_readable_number(1024 * 512, ""), "512K");
+        assert_eq!(human_readable_number(1024 * 1024, ""), "1.0M");
+        assert_eq!(human_readable_number(1024 * 1024 * 1024 - 1, ""), "1023M");
+        assert_eq!(human_readable_number(1024 * 1024 * 1024 * 20, ""), "20G");
+        assert_eq!(human_readable_number(1024 * 1024 * 1024 * 1024, ""), "1.0T");
         assert_eq!(
-            human_readable_number(1024 * 1024 * 1024 - 1, false),
-            "1023M"
+            human_readable_number(1024 * 1024 * 1024 * 1024 * 234, ""),
+            "234T"
         );
-        assert_eq!(human_readable_number(1024 * 1024 * 1024 * 20, false), "20G");
         assert_eq!(
-            human_readable_number(1024 * 1024 * 1024 * 1024, false),
-            "1.0T"
+            human_readable_number(1024 * 1024 * 1024 * 1024 * 1024, ""),
+            "1.0P"
         );
     }
+
+    #[test]
+    fn test_human_readable_number_si() {
+        assert_eq!(human_readable_number(1024 * 100, ""), "100K");
+        assert_eq!(human_readable_number(1024 * 100, "si"), "102K");
+    }
+
+    // Refer to https://en.wikipedia.org/wiki/Byte#Multiple-byte_units
+    #[test]
+    fn test_human_readable_number_kb() {
+        let hrn = human_readable_number;
+        assert_eq!(hrn(1023, "b"), "1023B");
+        assert_eq!(hrn(1000 * 1000, "bytes"), "1000000B");
+        assert_eq!(hrn(1023, "kb"), "1K");
+        assert_eq!(hrn(1023, "k"), "0K");
+        assert_eq!(hrn(1023, "kib"), "0K");
+        assert_eq!(hrn(1024, "kib"), "1K");
+        assert_eq!(hrn(1024 * 512, "kib"), "512K");
+        assert_eq!(hrn(1024 * 1024, "kib"), "1024K");
+        assert_eq!(hrn(1024 * 1000 * 1000 * 20, "kib"), "20000000K");
+        assert_eq!(hrn(1024 * 1024 * 1000 * 20, "mib"), "20000M");
+        assert_eq!(hrn(1024 * 1024 * 1024 * 20, "gib"), "20G");
+    }
+
+    #[cfg(test)]
+    fn build_draw_data(disp: &DisplayData, size: u32) -> (DrawData<'_>, DisplayNode) {
+        let n = DisplayNode {
+            name: PathBuf::from("/short"),
+            size: 2_u64.pow(size),
+            children: vec![],
+        };
+        let first_size_bar = repeat(BLOCKS[0]).take(13).collect();
+        let dd = DrawData {
+            indent: "".into(),
+            percent_bar: first_size_bar,
+            display_data: disp,
+        };
+        (dd, n)
+    }
+
+    #[test]
+    fn test_draw_data() {
+        let disp = &get_fake_display_data(20);
+        let (dd, n) = build_draw_data(disp, 12);
+        let bar = dd.generate_bar(&n, 1);
+        assert_eq!(bar, "█████████████");
+    }
+
+    #[test]
+    fn test_draw_data2() {
+        let disp = &get_fake_display_data(20);
+        let (dd, n) = build_draw_data(disp, 11);
+        let bar = dd.generate_bar(&n, 2);
+        assert_eq!(bar, "███████░░░░░░");
+    }
+    #[test]
+    fn test_draw_data3() {
+        let mut disp = get_fake_display_data(20);
+        let (dd, n) = build_draw_data(&disp, 11);
+        let bar = dd.generate_bar(&n, 3);
+        assert_eq!(bar, "███████▒▒▒▒▒▒");
+
+        disp.initial.bars_on_right = true;
+        let (dd, n) = build_draw_data(&disp, 11);
+        let bar = dd.generate_bar(&n, 3);
+        assert_eq!(bar, "▒▒▒▒▒▒███████")
+    }
+    #[test]
+    fn test_draw_data4() {
+        let disp = &get_fake_display_data(20);
+        let (dd, n) = build_draw_data(disp, 10);
+        // After 4 we have no more levels of shading so 4+ is the same
+        let bar = dd.generate_bar(&n, 4);
+        assert_eq!(bar, "████▓▓▓▓▓▓▓▓▓");
+        let bar = dd.generate_bar(&n, 5);
+        assert_eq!(bar, "████▓▓▓▓▓▓▓▓▓");
+    }
+
+    #[test]
+    fn test_get_pretty_file_modified_time() {
+        // Create a timestamp for 2023-07-12 00:00:00 in local time
+        let local_dt = Local.with_ymd_and_hms(2023, 7, 12, 0, 0, 0).unwrap();
+        let timestamp = local_dt.timestamp();
+
+        // Format expected output
+        let expected_output = local_dt.format("%Y-%m-%dT%H:%M:%S").to_string();
+
+        assert_eq!(get_pretty_file_modified_time(timestamp), expected_output);
+
+        // Test another timestamp
+        let local_dt = Local.with_ymd_and_hms(2020, 1, 1, 12, 0, 0).unwrap();
+        let timestamp = local_dt.timestamp();
+        let expected_output = local_dt.format("%Y-%m-%dT%H:%M:%S").to_string();
+
+        assert_eq!(get_pretty_file_modified_time(timestamp), expected_output);
+
+        // Test timestamp for epoch start (1970-01-01T00:00:00)
+        let local_dt = Local.with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap();
+        let timestamp = local_dt.timestamp();
+        let expected_output = local_dt.format("%Y-%m-%dT%H:%M:%S").to_string();
+
+        assert_eq!(get_pretty_file_modified_time(timestamp), expected_output);
+
+        // Test a future timestamp
+        let local_dt = Local.with_ymd_and_hms(2030, 12, 25, 6, 30, 0).unwrap();
+        let timestamp = local_dt.timestamp();
+        let expected_output = local_dt.format("%Y-%m-%dT%H:%M:%S").to_string();
+
+        assert_eq!(get_pretty_file_modified_time(timestamp), expected_output);
+    }
 }

src/display_node.rs

@@ -1,47 +1,58 @@
-use std::cmp::Ordering;
+use std::cell::RefCell;
 use std::path::PathBuf;
 
-#[derive(Debug, Eq, Clone)]
+use serde::ser::SerializeStruct;
+use serde::{Serialize, Serializer};
+
+use crate::display::human_readable_number;
+
+#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone)]
 pub struct DisplayNode {
-    pub name: PathBuf, //todo: consider moving to a string?
+    // Note: the order of fields in important here, for PartialEq and PartialOrd
     pub size: u64,
+    pub name: PathBuf,
     pub children: Vec<DisplayNode>,
 }
 
-impl Ord for DisplayNode {
-    fn cmp(&self, other: &Self) -> Ordering {
-        if self.size == other.size {
-            self.name.cmp(&other.name)
-        } else {
-            self.size.cmp(&other.size)
-        }
-    }
-}
-
-impl PartialOrd for DisplayNode {
-    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-impl PartialEq for DisplayNode {
-    fn eq(&self, other: &Self) -> bool {
-        self.name == other.name && self.size == other.size && self.children == other.children
-    }
-}
-
 impl DisplayNode {
     pub fn num_siblings(&self) -> u64 {
         self.children.len() as u64
     }
 
-    pub fn get_children_from_node(&self, is_reversed: bool) -> impl Iterator<Item = DisplayNode> {
+    pub fn get_children_from_node(&self, is_reversed: bool) -> impl Iterator<Item = &DisplayNode> {
         // we box to avoid the clippy lint warning
-        let out: Box<dyn Iterator<Item = DisplayNode>> = if is_reversed {
-            Box::new(self.children.clone().into_iter().rev())
+        let out: Box<dyn Iterator<Item = &DisplayNode>> = if is_reversed {
+            Box::new(self.children.iter().rev())
         } else {
-            Box::new(self.children.clone().into_iter())
+            Box::new(self.children.iter())
         };
         out
     }
 }
+
+// Only used for -j 'json' flag combined with -o 'output_type' flag
+// Used to pass the output_type into the custom Serde serializer
+thread_local! {
+    pub static OUTPUT_TYPE: RefCell<String> = const { RefCell::new(String::new()) };
+}
+
+/*
+We need the custom Serialize incase someone uses the -o flag to pass a custom output type in
+(show size in Mb / Gb etc).
+Sadly this also necessitates a global variable OUTPUT_TYPE as we can not pass the output_type flag
+into the serialize method
+ */
+impl Serialize for DisplayNode {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let readable_size = OUTPUT_TYPE
+            .with(|output_type| human_readable_number(self.size, output_type.borrow().as_str()));
+        let mut state = serializer.serialize_struct("DisplayNode", 2)?;
+        state.serialize_field("size", &(readable_size))?;
+        state.serialize_field("name", &self.name)?;
+        state.serialize_field("children", &self.children)?;
+        state.end()
+    }
+}

src/filter.rs

@@ -1,174 +1,167 @@
 use crate::display_node::DisplayNode;
+use crate::node::FileTime;
 use crate::node::Node;
 use std::collections::BinaryHeap;
 use std::collections::HashMap;
 use std::collections::HashSet;
+use std::path::Path;
 use std::path::PathBuf;
 
-pub fn get_by_depth(top_level_nodes: Vec<Node>, n: usize) -> Option<DisplayNode> {
-    if top_level_nodes.is_empty() {
-        // perhaps change this, bring back Error object?
-        return None;
-    }
-    let root = get_new_root(top_level_nodes);
-    Some(build_by_depth(&root, n - 1))
+pub struct AggregateData {
+    pub min_size: Option<usize>,
+    pub only_dir: bool,
+    pub only_file: bool,
+    pub number_of_lines: usize,
+    pub depth: usize,
+    pub using_a_filter: bool,
 }
 
 pub fn get_biggest(
-    top_level_nodes: Vec<Node>,
-    n: usize,
-    using_a_filter: bool,
+    mut top_level_nodes: Vec<Node>,
+    display_data: AggregateData,
+    by_filetime: &Option<FileTime>,
+    keep_collapsed: HashSet<PathBuf>,
 ) -> Option<DisplayNode> {
     if top_level_nodes.is_empty() {
         // perhaps change this, bring back Error object?
         return None;
     }
-
     let mut heap = BinaryHeap::new();
     let number_top_level_nodes = top_level_nodes.len();
-    let root = get_new_root(top_level_nodes);
-    let mut allowed_nodes = HashSet::new();
+    let root;
 
-    allowed_nodes.insert(&root.name);
-    heap = add_children(using_a_filter, &root, heap);
+    if number_top_level_nodes > 1 {
+        let size = if by_filetime.is_some() {
+            top_level_nodes
+                .iter()
+                .map(|node| node.size)
+                .max()
+                .unwrap_or(0)
+        } else {
+            top_level_nodes.iter().map(|node| node.size).sum()
+        };
 
-    for _ in number_top_level_nodes..n {
+        root = Node {
+            name: PathBuf::from("(total)"),
+            size,
+            children: top_level_nodes,
+            inode_device: None,
+            depth: 0,
+        };
+
+        // Always include the base nodes if we add a 'parent' (total) node
+        heap = always_add_children(&display_data, &root, heap);
+    } else {
+        root = top_level_nodes.into_iter().next().unwrap();
+        heap = add_children(&display_data, &root, heap);
+    }
+
+    let result = fill_remaining_lines(
+        heap,
+        &root,
+        display_data,
+        keep_collapsed,
+    );
+    Some(result)
+}
+
+pub fn fill_remaining_lines<'a>(
+    mut heap: BinaryHeap<&'a Node>,
+    root: &'a Node,
+    display_data: AggregateData,
+    keep_collapsed: HashSet<PathBuf>,
+) -> DisplayNode {
+    let mut allowed_nodes = HashMap::new();
+
+    while allowed_nodes.len() < display_data.number_of_lines {
         let line = heap.pop();
         match line {
             Some(line) => {
-                allowed_nodes.insert(&line.name);
-                heap = add_children(using_a_filter, line, heap);
+                if !display_data.only_file || line.children.is_empty() {
+                    allowed_nodes.insert(line.name.as_path(), line);
+                }
+                if !keep_collapsed.contains(&line.name) {
+                    heap = add_children(&display_data, line, heap);
+                }
             }
             None => break,
         }
     }
-    recursive_rebuilder(&allowed_nodes, &root)
-}
 
-pub fn get_all_file_types(top_level_nodes: Vec<Node>, n: usize) -> Option<DisplayNode> {
-    let mut map: HashMap<String, DisplayNode> = HashMap::new();
-    build_by_all_file_types(top_level_nodes, &mut map);
-    let mut by_types: Vec<DisplayNode> = map.into_iter().map(|(_k, v)| v).collect();
-    by_types.sort();
-    by_types.reverse();
-
-    let displayed = if by_types.len() <= n {
-        by_types
+    if display_data.only_file {
+        flat_rebuilder(allowed_nodes, root)
     } else {
-        let (displayed, rest) = by_types.split_at(if n > 1 { n - 1 } else { 1 });
-        let remaining = DisplayNode {
-            name: PathBuf::from("(others)"),
-            size: rest.iter().map(|a| a.size).sum(),
-            children: vec![],
-        };
-
-        let mut displayed = displayed.to_vec();
-        displayed.push(remaining);
-        displayed
-    };
-
-    let result = DisplayNode {
-        name: PathBuf::from("(total)"),
-        size: displayed.iter().map(|a| a.size).sum(),
-        children: displayed,
-    };
-    Some(result)
+        recursive_rebuilder(&allowed_nodes, root)
+    }
 }
 
 fn add_children<'a>(
-    using_a_filter: bool,
-    line: &'a Node,
+    display_data: &AggregateData,
+    file_or_folder: &'a Node,
+    heap: BinaryHeap<&'a Node>,
+) -> BinaryHeap<&'a Node> {
+    if display_data.depth > file_or_folder.depth {
+        always_add_children(display_data, file_or_folder, heap)
+    } else {
+        heap
+    }
+}
+
+fn always_add_children<'a>(
+    display_data: &AggregateData,
+    file_or_folder: &'a Node,
     mut heap: BinaryHeap<&'a Node>,
 ) -> BinaryHeap<&'a Node> {
-    if using_a_filter {
-        line.children.iter().for_each(|c| {
-            if c.name.is_file() || c.size > 0 {
-                heap.push(c)
-            }
-        });
-    } else {
-        line.children.iter().for_each(|c| heap.push(c));
-    }
+    heap.extend(
+        file_or_folder
+            .children
+            .iter()
+            .filter(|c| match display_data.min_size {
+                Some(ms) => c.size > ms as u64,
+                None => !display_data.using_a_filter || c.name.is_file() || c.size > 0,
+            })
+            .filter(|c| {
+                if display_data.only_dir {
+                    c.name.is_dir()
+                } else {
+                    true
+                }
+            }),
+    );
     heap
 }
 
-fn build_by_all_file_types(top_level_nodes: Vec<Node>, counter: &mut HashMap<String, DisplayNode>) {
-    for node in top_level_nodes {
-        if node.name.is_file() {
-            let ext = node.name.extension();
-            let key: String = match ext {
-                Some(e) => ".".to_string() + &e.to_string_lossy(),
-                None => "(no extension)".into(),
-            };
-            let mut display_node = counter.entry(key.clone()).or_insert(DisplayNode {
-                name: PathBuf::from(key),
-                size: 0,
-                children: vec![],
-            });
-            display_node.size += node.size;
-        }
-        build_by_all_file_types(node.children, counter)
-    }
-}
-
-fn build_by_depth(node: &Node, depth: usize) -> DisplayNode {
-    let new_children = {
-        if depth == 0 {
-            vec![]
-        } else {
-            let mut new_children: Vec<_> = node
-                .children
-                .iter()
-                .map(|c| build_by_depth(c, depth - 1))
-                .collect();
-            new_children.sort();
-            new_children.reverse();
-            new_children
-        }
-    };
-
-    DisplayNode {
-        name: node.name.clone(),
-        size: node.size,
-        children: new_children,
-    }
-}
-
-fn get_new_root(top_level_nodes: Vec<Node>) -> Node {
-    if top_level_nodes.len() > 1 {
-        let total_size = top_level_nodes.iter().map(|node| node.size).sum();
-        Node {
-            name: PathBuf::from("(total)"),
-            size: total_size,
-            children: top_level_nodes,
-            inode_device: None,
-        }
-    } else {
-        top_level_nodes.into_iter().next().unwrap()
-    }
-}
-
-fn recursive_rebuilder<'a>(
-    allowed_nodes: &'a HashSet<&PathBuf>,
-    current: &Node,
-) -> Option<DisplayNode> {
-    let mut new_children: Vec<_> = current
+// Finds children of current, if in allowed_nodes adds them as children to new DisplayNode
+fn recursive_rebuilder(allowed_nodes: &HashMap<&Path, &Node>, current: &Node) -> DisplayNode {
+    let new_children: Vec<_> = current
         .children
         .iter()
-        .filter_map(|c| {
-            if allowed_nodes.contains(&c.name) {
-                recursive_rebuilder(allowed_nodes, c)
-            } else {
-                None
-            }
-        })
+        .filter(|c| allowed_nodes.contains_key(c.name.as_path()))
+        .map(|c| recursive_rebuilder(allowed_nodes, c))
         .collect();
-    new_children.sort();
-    new_children.reverse();
-    let newnode = DisplayNode {
-        name: current.name.clone(),
+
+    build_display_node(new_children, current)
+}
+
+// Applies all allowed nodes as children to current node
+fn flat_rebuilder(allowed_nodes: HashMap<&Path, &Node>, current: &Node) -> DisplayNode {
+    let new_children: Vec<DisplayNode> = allowed_nodes
+        .into_values()
+        .map(|v| DisplayNode {
+            name: v.name.clone(),
+            size: v.size,
+            children: vec![],
+        })
+        .collect::<Vec<DisplayNode>>();
+    build_display_node(new_children, current)
+}
+
+fn build_display_node(mut new_children: Vec<DisplayNode>, current: &Node) -> DisplayNode {
+    new_children.sort_by(|lhs, rhs| lhs.cmp(rhs).reverse());
+    // println!("{:?}", current.name);
+    DisplayNode {
+        name: PathBuf::from(current.name.display().to_string()),
         size: current.size,
         children: new_children,
-    };
-    Some(newnode)
+    }
 }

src/filter_type.rs

@@ -0,0 +1,91 @@
+use crate::display_node::DisplayNode;
+use crate::node::FileTime;
+use crate::node::Node;
+use std::collections::HashMap;
+use std::ffi::OsStr;
+use std::path::PathBuf;
+
+#[derive(PartialEq, Eq, PartialOrd, Ord)]
+struct ExtensionNode<'a> {
+    size: u64,
+    extension: Option<&'a OsStr>,
+}
+
+pub fn get_all_file_types(
+    top_level_nodes: &[Node],
+    n: usize,
+    by_filetime: &Option<FileTime>,
+) -> Option<DisplayNode> {
+    let ext_nodes = {
+        let mut extension_cumulative_sizes = HashMap::new();
+        build_by_all_file_types(top_level_nodes, &mut extension_cumulative_sizes);
+
+        let mut extension_cumulative_sizes: Vec<ExtensionNode<'_>> = extension_cumulative_sizes
+            .iter()
+            .map(|(&extension, &size)| ExtensionNode { extension, size })
+            .collect();
+
+        extension_cumulative_sizes.sort_by(|lhs, rhs| lhs.cmp(rhs).reverse());
+
+        extension_cumulative_sizes
+    };
+
+    let mut ext_nodes_iter = ext_nodes.iter();
+
+    // First, collect the first N - 1 nodes...
+    let mut displayed: Vec<DisplayNode> = ext_nodes_iter
+        .by_ref()
+        .take(if n > 1 { n - 1 } else { 1 })
+        .map(|node| DisplayNode {
+            name: PathBuf::from(
+                node.extension
+                    .map(|ext| format!(".{}", ext.to_string_lossy()))
+                    .unwrap_or_else(|| "(no extension)".to_owned()),
+            ),
+            size: node.size,
+            children: vec![],
+        })
+        .collect();
+
+    // ...then, aggregate the remaining nodes (if any) into a single  "(others)" node
+    if ext_nodes_iter.len() > 0 {
+        let actual_size = if by_filetime.is_some() {
+            ext_nodes_iter.map(|node| node.size).max().unwrap_or(0)
+        } else {
+            ext_nodes_iter.map(|node| node.size).sum()
+        };
+        displayed.push(DisplayNode {
+            name: PathBuf::from("(others)"),
+            size: actual_size,
+            children: vec![],
+        });
+    }
+
+    let actual_size: u64 = if by_filetime.is_some() {
+        displayed.iter().map(|node| node.size).max().unwrap_or(0)
+    } else {
+        displayed.iter().map(|node| node.size).sum()
+    };
+
+    let result = DisplayNode {
+        name: PathBuf::from("(total)"),
+        size: actual_size,
+        children: displayed,
+    };
+
+    Some(result)
+}
+
+fn build_by_all_file_types<'a>(
+    top_level_nodes: &'a [Node],
+    counter: &mut HashMap<Option<&'a OsStr>, u64>,
+) {
+    for node in top_level_nodes {
+        if node.name.is_file() {
+            let ext = node.name.extension();
+            let cumulative_size = counter.entry(ext).or_default();
+            *cumulative_size += node.size;
+        }
+        build_by_all_file_types(&node.children, counter)
+    }
+}

src/main.rs

@@ -1,16 +1,41 @@
-extern crate clap;
-extern crate rayon;
-extern crate regex;
-extern crate unicode_width;
+mod cli;
+mod config;
+mod dir_walker;
+mod display;
+mod display_node;
+mod filter;
+mod filter_type;
+mod node;
+mod platform;
+mod progress;
+mod utils;
 
+use crate::cli::build_cli;
+use crate::progress::RuntimeErrors;
+use clap::parser::ValuesRef;
+use dir_walker::WalkData;
+use display::InitialDisplayData;
+use filter::AggregateData;
+use progress::PIndicator;
+use regex::Error;
 use std::collections::HashSet;
+use std::env;
+use std::fs::read_to_string;
+use std::io;
+use std::panic;
 use std::process;
+use std::sync::atomic::AtomicBool;
+use std::sync::atomic::Ordering;
+use std::sync::Arc;
+use std::sync::Mutex;
+use sysinfo::{System, SystemExt};
 
 use self::display::draw_it;
-use clap::{crate_version, Arg};
-use clap::{Command, Values};
-use dir_walker::{walk_it, WalkData};
-use filter::{get_all_file_types, get_biggest, get_by_depth};
+use config::get_config;
+use dir_walker::walk_it;
+use display_node::OUTPUT_TYPE;
+use filter::get_biggest;
+use filter_type::get_all_file_types;
 use regex::Regex;
 use std::cmp::max;
 use std::path::PathBuf;
@@ -18,309 +43,370 @@ use terminal_size::{terminal_size, Height, Width};
 use utils::get_filesystem_devices;
 use utils::simplify_dir_names;
 
-mod dir_walker;
-mod display;
-mod display_node;
-mod filter;
-mod node;
-mod platform;
-mod utils;
-
 static DEFAULT_NUMBER_OF_LINES: usize = 30;
 static DEFAULT_TERMINAL_WIDTH: usize = 80;
 
-#[cfg(windows)]
-fn init_color(no_color: bool) -> bool {
-    // If no color is already set do not print a warning message
+fn should_init_color(no_color: bool, force_color: bool) -> bool {
+    if force_color {
+        return true;
+    }
     if no_color {
-        true
-    } else {
+        return false;
+    }
+    // check if NO_COLOR is set
+    // https://no-color.org/
+    if env::var_os("NO_COLOR").is_some() {
+        return false;
+    }
+    if terminal_size().is_none() {
+        // we are not in a terminal, color may not be needed
+        return false;
+    }
+    // we are in a terminal
+    #[cfg(windows)]
+    {
         // Required for windows 10
         // Fails to resolve for windows 8 so disable color
         match ansi_term::enable_ansi_support() {
-            Ok(_) => no_color,
+            Ok(_) => true,
             Err(_) => {
-                eprintln!(
-                    "This version of Windows does not support ANSI colors, setting no_color flag"
-                );
-                true
+                eprintln!("This version of Windows does not support ANSI colors");
+                false
             }
         }
     }
-}
-
-#[cfg(not(windows))]
-fn init_color(no_color: bool) -> bool {
-    no_color
+    #[cfg(not(windows))]
+    {
+        true
+    }
 }
 
 fn get_height_of_terminal() -> usize {
-    // Windows CI runners detect a terminal height of 0
-    if let Some((Width(_w), Height(h))) = terminal_size() {
-        max(h as usize, DEFAULT_NUMBER_OF_LINES) - 10
-    } else {
-        DEFAULT_NUMBER_OF_LINES - 10
-    }
+    terminal_size()
+        // Windows CI runners detect a terminal height of 0
+        .map(|(_, Height(h))| max(h.into(), DEFAULT_NUMBER_OF_LINES))
+        .unwrap_or(DEFAULT_NUMBER_OF_LINES)
+        - 10
 }
 
-#[cfg(windows)]
 fn get_width_of_terminal() -> usize {
-    // Windows CI runners detect a very low terminal width
-    if let Some((Width(w), Height(_h))) = terminal_size() {
-        max(w as usize, DEFAULT_TERMINAL_WIDTH)
-    } else {
-        DEFAULT_TERMINAL_WIDTH
-    }
+    terminal_size()
+        .map(|(Width(w), _)| match cfg!(windows) {
+            // Windows CI runners detect a very low terminal width
+            true => max(w.into(), DEFAULT_TERMINAL_WIDTH),
+            false => w.into(),
+        })
+        .unwrap_or(DEFAULT_TERMINAL_WIDTH)
 }
 
-#[cfg(not(windows))]
-fn get_width_of_terminal() -> usize {
-    if let Some((Width(w), Height(_h))) = terminal_size() {
-        w as usize
-    } else {
-        DEFAULT_TERMINAL_WIDTH
-    }
-}
-
-fn get_regex_value(maybe_value: Option<Values>) -> Vec<Regex> {
-    let mut result = vec![];
-    if let Some(v) = maybe_value {
-        for reg in v {
-            match Regex::new(reg) {
-                Ok(r) => result.push(r),
-                Err(e) => {
-                    eprintln!("Ignoring bad value for regex {:?}", e);
-                    process::exit(1);
-                }
-            }
-        }
-    }
-    result
+fn get_regex_value(maybe_value: Option<ValuesRef<String>>) -> Vec<Regex> {
+    maybe_value
+        .unwrap_or_default()
+        .map(|reg| {
+            Regex::new(reg).unwrap_or_else(|err| {
+                eprintln!("Ignoring bad value for regex {err:?}");
+                process::exit(1)
+            })
+        })
+        .collect()
 }
 
 fn main() {
-    let default_height = get_height_of_terminal();
-    let def_num_str = default_height.to_string();
+    let options = build_cli().get_matches();
+    let config = get_config(options.get_one::<String>("config").cloned());
 
-    let options = Command::new("Dust")
-        .about("Like du but more intuitive")
-        .version(crate_version!())
-        .trailing_var_arg(true)
-        .arg(
-            Arg::new("depth")
-                .short('d')
-                .long("depth")
-                .help("Depth to show")
-                .takes_value(true)
-                .conflicts_with("number_of_lines"),
-        )
-        .arg(
-            Arg::new("number_of_lines")
-                .short('n')
-                .long("number-of-lines")
-                .help("Number of lines of output to show. (Default is terminal_height - 10)")
-                .takes_value(true)
-                .default_value(def_num_str.as_ref()),
-        )
-        .arg(
-            Arg::new("display_full_paths")
-                .short('p')
-                .long("full-paths")
-                .help("Subdirectories will not have their path shortened"),
-        )
-        .arg(
-            Arg::new("ignore_directory")
-                .short('X')
-                .long("ignore-directory")
-                .takes_value(true)
-                .number_of_values(1)
-                .multiple_occurrences(true)
-                .help("Exclude any file or directory with this name"),
-        )
-        .arg(
-            Arg::new("limit_filesystem")
-                .short('x')
-                .long("limit-filesystem")
-                .help("Only count the files and directories on the same filesystem as the supplied directory"),
-        )
-        .arg(
-            Arg::new("display_apparent_size")
-                .short('s')
-                .long("apparent-size")
-                .help("Use file length instead of blocks"),
-        )
-        .arg(
-            Arg::new("reverse")
-                .short('r')
-                .long("reverse")
-                .help("Print tree upside down (biggest highest)"),
-        )
-        .arg(
-            Arg::new("no_colors")
-                .short('c')
-                .long("no-colors")
-                .help("No colors will be printed (Useful for commands like: watch)"),
-        )
-        .arg(
-            Arg::new("no_bars")
-                .short('b')
-                .long("no-percent-bars")
-                .help("No percent bars or percentages will be displayed"),
-        )
-        .arg(
-            Arg::new("by_filecount")
-                .short('f')
-                .long("filecount")
-                .help("Directory 'size' is number of child files/dirs not disk size"),
-        )
-        .arg(
-            Arg::new("ignore_hidden")
-                .short('i') // Do not use 'h' this is used by 'help'
-                .long("ignore_hidden")
-                .help("Do not display hidden files"),
-        )
-        .arg(
-            Arg::new("invert_filter")
-                .short('v')
-                .long("invert-filter")
-                .takes_value(true)
-                .number_of_values(1)
-                .multiple_occurrences(true)
-                .conflicts_with("filter")
-                .conflicts_with("types")
-                .conflicts_with("depth")
-                .help("Exclude files matching this regex. To ignore png files type: -v \"\\.png$\" "),
-        )
-        .arg(
-            Arg::new("filter")
-                .short('e')
-                .long("filter")
-                .takes_value(true)
-                .number_of_values(1)
-                .multiple_occurrences(true)
-                .conflicts_with("types")
-                .conflicts_with("depth")
-                .help("Only include files matching this regex. For png files type: -e \"\\.png$\" "),
-        )
-        .arg(
-            Arg::new("types")
-                .short('t')
-                .long("file_types")
-                .conflicts_with("depth")
-                .help("show only these file types"),
-        )
-        .arg(
-            Arg::new("width")
-                .short('w')
-                .long("terminal_width")
-                .takes_value(true)
-                .number_of_values(1)
-                .help("Specify width of output overriding the auto detection of terminal width"),
-        )
-        .arg(Arg::new("inputs").multiple_occurrences(true).default_value("."))
-        .arg(
-            Arg::new("iso")
-                .short('H')
-                .long("si")
-                .help("print sizes in powers of 1000 (e.g., 1.1G)")
-        )
-        .get_matches();
+    let errors = RuntimeErrors::default();
+    let error_listen_for_ctrlc = Arc::new(Mutex::new(errors));
+    let errors_for_rayon = error_listen_for_ctrlc.clone();
+    let errors_final = error_listen_for_ctrlc.clone();
+    let is_in_listing = Arc::new(AtomicBool::new(false));
+    let cloned_is_in_listing = Arc::clone(&is_in_listing);
 
-    let target_dirs = options
-        .values_of("inputs")
-        .expect("Should be a default value here")
-        .collect();
+    ctrlc::set_handler(move || {
+        error_listen_for_ctrlc.lock().unwrap().abort = true;
+        println!("\nAborting");
+        if cloned_is_in_listing.load(Ordering::Relaxed) {
+            process::exit(1);
+        }
+    })
+    .expect("Error setting Ctrl-C handler");
 
-    let summarize_file_types = options.is_present("types");
+    is_in_listing.store(true, Ordering::Relaxed);
+    let target_dirs = match config.get_files_from(&options) {
+        Some(path) => {
+            if path == "-" {
+                let mut targets_to_add = io::stdin()
+                    .lines()
+                    .map_while(Result::ok)
+                    .collect::<Vec<String>>();
 
-    let filter_regexs = get_regex_value(options.values_of("filter"));
-    let invert_filter_regexs = get_regex_value(options.values_of("invert_filter"));
+                if targets_to_add.is_empty() {
+                    eprintln!("No input provided, defaulting to current directory");
+                    targets_to_add.push(".".to_owned());
+                }
+                targets_to_add
+            } else {
+                // read file
+                match read_to_string(path) {
+                    Ok(file_content) => file_content.lines().map(|x| x.to_string()).collect(),
+                    Err(e) => {
+                        eprintln!("Error reading file: {e}");
+                        vec![".".to_owned()]
+                    }
+                }
+            }
+        }
+        None => match options.get_many::<String>("params") {
+            Some(values) => values.cloned().collect(),
+            None => vec![".".to_owned()],
+        },
+    };
+    is_in_listing.store(false, Ordering::Relaxed);
 
-    let number_of_lines = match options.value_of_t("number_of_lines") {
-        Ok(v) => v,
-        Err(_) => {
-            eprintln!("Ignoring bad value for number_of_lines");
-            default_height
+    let summarize_file_types = options.get_flag("types");
+
+    let filter_regexs = get_regex_value(options.get_many("filter"));
+    let invert_filter_regexs = get_regex_value(options.get_many("invert_filter"));
+
+    let terminal_width: usize = match options.get_one::<usize>("width") {
+        Some(&val) => val,
+        None => get_width_of_terminal(),
+    };
+
+    let depth = config.get_depth(&options);
+
+    // If depth is set, then we set the default number_of_lines to be max
+    // instead of screen height
+
+    let number_of_lines = match options.get_one::<usize>("number_of_lines") {
+        Some(&val) => val,
+        None => {
+            if depth != usize::MAX {
+                usize::MAX
+            } else {
+                get_height_of_terminal()
+            }
         }
     };
 
-    let terminal_width = match options.value_of_t("width") {
-        Ok(v) => v,
-        Err(_) => get_width_of_terminal(),
+    let is_colors = should_init_color(
+        config.get_no_colors(&options),
+        config.get_force_colors(&options),
+    );
+
+    let ignore_directories = match options.get_many::<String>("ignore_directory") {
+        Some(values) => values
+            .map(|v| v.as_str())
+            .map(PathBuf::from)
+            .collect::<Vec<PathBuf>>(),
+        None => vec![],
     };
 
-    let depth = options.value_of("depth").and_then(|depth| {
-        depth
-            .parse::<usize>()
-            .map(|v| v + 1)
-            .map_err(|_| eprintln!("Ignoring bad value for depth"))
-            .ok()
-    });
+    let ignore_from_file_result = match options.get_one::<String>("ignore_all_in_file") {
+        Some(val) => read_to_string(val)
+            .unwrap()
+            .lines()
+            .map(Regex::new)
+            .collect::<Vec<Result<Regex, Error>>>(),
+        None => vec![],
+    };
+    let ignore_from_file = ignore_from_file_result
+        .into_iter()
+        .filter_map(|x| x.ok())
+        .collect::<Vec<Regex>>();
 
-    let no_colors = init_color(options.is_present("no_colors"));
-    let use_apparent_size = options.is_present("display_apparent_size");
-    let ignore_directories: Vec<PathBuf> = options
-        .values_of("ignore_directory")
-        .map(|i| i.map(PathBuf::from).collect())
+    let invert_filter_regexs = invert_filter_regexs
+        .into_iter()
+        .chain(ignore_from_file)
+        .collect::<Vec<Regex>>();
+
+    let by_filecount = options.get_flag("by_filecount");
+    let by_filetime = config.get_filetime(&options);
+    let limit_filesystem = options.get_flag("limit_filesystem");
+    let follow_links = options.get_flag("dereference_links");
+
+    let allowed_filesystems = limit_filesystem
+        .then(|| get_filesystem_devices(&target_dirs, follow_links))
         .unwrap_or_default();
-
-    let by_filecount = options.is_present("by_filecount");
-    let ignore_hidden = options.is_present("ignore_hidden");
-    let limit_filesystem = options.is_present("limit_filesystem");
-
-    let simplified_dirs = simplify_dir_names(target_dirs);
-    let allowed_filesystems = {
-        if limit_filesystem {
-            get_filesystem_devices(simplified_dirs.iter())
-        } else {
-            HashSet::new()
-        }
-    };
+    let simplified_dirs = simplify_dir_names(&target_dirs);
 
     let ignored_full_path: HashSet<PathBuf> = ignore_directories
         .into_iter()
-        .flat_map(|x| simplified_dirs.iter().map(move |d| d.join(x.clone())))
+        .flat_map(|x| simplified_dirs.iter().map(move |d| d.join(&x)))
         .collect();
 
+    let output_format = config.get_output_format(&options);
+
+    let ignore_hidden = config.get_ignore_hidden(&options);
+
+    let mut indicator = PIndicator::build_me();
+    if !config.get_disable_progress(&options) {
+        indicator.spawn(output_format.clone())
+    }
+
+    let keep_collapsed: HashSet<PathBuf> = match options.get_many::<String>("collapse") {
+        Some(collapse) => {
+            let mut combined_dirs = HashSet::new();
+            for collapse_dir in collapse {
+                for target_dir in target_dirs.iter() {
+                    combined_dirs.insert(PathBuf::from(target_dir).join(collapse_dir));
+                }
+            }
+            combined_dirs
+        }
+        None => HashSet::new(),
+    };
+
+    let filter_modified_time = config.get_modified_time_operator(&options);
+    let filter_accessed_time = config.get_accessed_time_operator(&options);
+    let filter_changed_time = config.get_changed_time_operator(&options);
+
     let walk_data = WalkData {
         ignore_directories: ignored_full_path,
         filter_regex: &filter_regexs,
         invert_filter_regex: &invert_filter_regexs,
         allowed_filesystems,
-        use_apparent_size,
+        filter_modified_time,
+        filter_accessed_time,
+        filter_changed_time,
+        use_apparent_size: config.get_apparent_size(&options),
         by_filecount,
+        by_filetime: &by_filetime,
         ignore_hidden,
+        follow_links,
+        progress_data: indicator.data.clone(),
+        errors: errors_for_rayon,
     };
+    let threads_to_use = config.get_threads(&options);
+    let stack_size = config.get_custom_stack_size(&options);
+    init_rayon(&stack_size, &threads_to_use);
 
-    let (top_level_nodes, has_errors) = walk_it(simplified_dirs, walk_data);
+    let top_level_nodes = walk_it(simplified_dirs, &walk_data);
 
-    let tree = {
-        match (depth, summarize_file_types) {
-            (_, true) => get_all_file_types(top_level_nodes, number_of_lines),
-            (Some(depth), _) => get_by_depth(top_level_nodes, depth),
-            (_, _) => get_biggest(
-                top_level_nodes,
+    let tree = match summarize_file_types {
+        true => get_all_file_types(&top_level_nodes, number_of_lines, &by_filetime),
+        false => {
+            let agg_data = AggregateData {
+                min_size: config.get_min_size(&options),
+                only_dir: config.get_only_dir(&options),
+                only_file: config.get_only_file(&options),
                 number_of_lines,
-                options.values_of("filter").is_some()
-                    || options.value_of("invert_filter").is_some(),
-            ),
+                depth,
+                using_a_filter: !filter_regexs.is_empty() || !invert_filter_regexs.is_empty(),
+            };
+            get_biggest(top_level_nodes, agg_data, &by_filetime, keep_collapsed)
         }
     };
 
-    if has_errors {
-        eprintln!("Did not have permissions for all directories");
+    // Must have stopped indicator before we print to stderr
+    indicator.stop();
+
+    if errors_final.lock().unwrap().abort {
+        return;
     }
-    match tree {
-        None => {}
-        Some(root_node) => draw_it(
-            options.is_present("display_full_paths"),
-            !options.is_present("reverse"),
-            no_colors,
-            options.is_present("no_bars"),
-            terminal_width,
-            by_filecount,
-            root_node,
-            options.is_present("iso"),
-        ),
+
+    let final_errors = walk_data.errors.lock().unwrap();
+    if !final_errors.file_not_found.is_empty() {
+        let err = final_errors
+            .file_not_found
+            .iter()
+            .map(|a| a.as_ref())
+            .collect::<Vec<&str>>()
+            .join(", ");
+        eprintln!("No such file or directory: {}", err);
+    }
+    if !final_errors.no_permissions.is_empty() {
+        if config.get_print_errors(&options) {
+            let err = final_errors
+                .no_permissions
+                .iter()
+                .map(|a| a.as_ref())
+                .collect::<Vec<&str>>()
+                .join(", ");
+            eprintln!("Did not have permissions for directories: {}", err);
+        } else {
+            eprintln!(
+                "Did not have permissions for all directories (add --print-errors to see errors)"
+            );
+        }
+    }
+    if !final_errors.unknown_error.is_empty() {
+        let err = final_errors
+            .unknown_error
+            .iter()
+            .map(|a| a.as_ref())
+            .collect::<Vec<&str>>()
+            .join(", ");
+        eprintln!("Unknown Error: {}", err);
+    }
+
+    if let Some(root_node) = tree {
+        if config.get_output_json(&options) {
+            OUTPUT_TYPE.with(|wrapped| {
+                wrapped.replace(output_format);
+            });
+            println!("{}", serde_json::to_string(&root_node).unwrap());
+        } else {
+            let idd = InitialDisplayData {
+                short_paths: !config.get_full_paths(&options),
+                is_reversed: !config.get_reverse(&options),
+                colors_on: is_colors,
+                by_filecount,
+                by_filetime,
+                is_screen_reader: config.get_screen_reader(&options),
+                output_format,
+                bars_on_right: config.get_bars_on_right(&options),
+            };
+
+            draw_it(
+                idd,
+                config.get_no_bars(&options),
+                terminal_width,
+                &root_node,
+                config.get_skip_total(&options),
+            )
+        }
     }
 }
+
+fn init_rayon(stack_size: &Option<usize>, threads: &Option<usize>) {
+    // Rayon seems to raise this error on 32-bit builds
+    // The global thread pool has not been initialized.: ThreadPoolBuildError { kind: GlobalPoolAlreadyInitialized }
+    if cfg!(target_pointer_width = "64") {
+        let result = panic::catch_unwind(|| build_thread_pool(*stack_size, *threads));
+        if result.is_err() {
+            eprintln!("Problem initializing rayon, try: export RAYON_NUM_THREADS=1")
+        }
+    }
+}
+
+fn build_thread_pool(
+    stack: Option<usize>,
+    threads: Option<usize>,
+) -> Result<(), rayon::ThreadPoolBuildError> {
+    let mut pool = rayon::ThreadPoolBuilder::new();
+
+    if let Some(thread_count) = threads {
+        pool = pool.num_threads(thread_count);
+    }
+
+    let stack_size = match stack {
+        Some(s) => Some(s),
+        None => {
+            let large_stack = usize::pow(1024, 3);
+            let mut s = System::new();
+            s.refresh_memory();
+            // Larger stack size if possible to handle cases with lots of nested directories
+            let available = s.available_memory();
+            if available > large_stack.try_into().unwrap() {
+                Some(large_stack)
+            } else {
+                None
+            }
+        }
+    };
+    if let Some(stack_size_param) = stack_size {
+        pool = pool.stack_size(stack_size_param);
+    }
+    pool.build_global()
+}

src/node.rs

@@ -1,8 +1,9 @@
+use crate::dir_walker::WalkData;
 use crate::platform::get_metadata;
+use crate::utils::is_filtered_out_due_to_file_time;
 use crate::utils::is_filtered_out_due_to_invert_regex;
 use crate::utils::is_filtered_out_due_to_regex;
 
-use regex::Regex;
 use std::cmp::Ordering;
 use std::path::PathBuf;
 
@@ -12,48 +13,71 @@ pub struct Node {
     pub size: u64,
     pub children: Vec<Node>,
     pub inode_device: Option<(u64, u64)>,
+    pub depth: usize,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum FileTime {
+    Modified,
+    Accessed,
+    Changed,
 }
 
 #[allow(clippy::too_many_arguments)]
 pub fn build_node(
     dir: PathBuf,
     children: Vec<Node>,
-    filter_regex: &[Regex],
-    invert_filter_regex: &[Regex],
-    use_apparent_size: bool,
     is_symlink: bool,
     is_file: bool,
-    by_filecount: bool,
+    depth: usize,
+    walk_data: &WalkData,
 ) -> Option<Node> {
-    match get_metadata(&dir, use_apparent_size) {
-        Some(data) => {
-            let inode_device = if is_symlink && !use_apparent_size {
-                None
-            } else {
-                data.1
-            };
+    let use_apparent_size = walk_data.use_apparent_size;
+    let by_filecount = walk_data.by_filecount;
+    let by_filetime = &walk_data.by_filetime;
 
-            let size = if is_filtered_out_due_to_regex(filter_regex, &dir)
-                || is_filtered_out_due_to_invert_regex(invert_filter_regex, &dir)
-                || (is_symlink && !use_apparent_size)
-                || by_filecount && !is_file
-            {
-                0
-            } else if by_filecount {
-                1
-            } else {
-                data.0
-            };
+    get_metadata(
+        &dir,
+        use_apparent_size,
+        walk_data.follow_links && is_symlink,
+    )
+    .map(|data| {
+        let inode_device = data.1;
 
-            Some(Node {
-                name: dir,
-                size,
-                children,
-                inode_device,
-            })
+        let size = if is_filtered_out_due_to_regex(walk_data.filter_regex, &dir)
+            || is_filtered_out_due_to_invert_regex(walk_data.invert_filter_regex, &dir)
+            || by_filecount && !is_file
+            || [
+                (&walk_data.filter_modified_time, data.2 .0),
+                (&walk_data.filter_accessed_time, data.2 .1),
+                (&walk_data.filter_changed_time, data.2 .2),
+            ]
+            .iter()
+            .any(|(filter_time, actual_time)| {
+                is_filtered_out_due_to_file_time(filter_time, *actual_time)
+            }) {
+            0
+        } else if by_filecount {
+            1
+        } else if by_filetime.is_some() {
+            match by_filetime {
+                Some(FileTime::Modified) => data.2 .0.unsigned_abs(),
+                Some(FileTime::Accessed) => data.2 .1.unsigned_abs(),
+                Some(FileTime::Changed) => data.2 .2.unsigned_abs(),
+                None => unreachable!(),
+            }
+        } else {
+            data.0
+        };
+
+        Node {
+            name: dir,
+            size,
+            children,
+            inode_device,
+            depth,
         }
-        None => None,
-    }
+    })
 }
 
 impl PartialEq for Node {
@@ -64,11 +88,10 @@ impl PartialEq for Node {
 
 impl Ord for Node {
     fn cmp(&self, other: &Self) -> Ordering {
-        if self.size == other.size {
-            self.name.cmp(&other.name)
-        } else {
-            self.size.cmp(&other.size)
-        }
+        self.size
+            .cmp(&other.size)
+            .then_with(|| self.name.cmp(&other.name))
+            .then_with(|| self.children.cmp(&other.children))
     }
 }
 

src/platform.rs

@@ -5,20 +5,40 @@ use std::path::Path;
 
 #[cfg(target_family = "unix")]
 fn get_block_size() -> u64 {
-    // All os specific implementations of MetatdataExt seem to define a block as 512 bytes
+    // All os specific implementations of MetadataExt seem to define a block as 512 bytes
     // https://doc.rust-lang.org/std/os/linux/fs/trait.MetadataExt.html#tymethod.st_blocks
     512
 }
 
+type InodeAndDevice = (u64, u64);
+type FileTime = (i64, i64, i64);
+
 #[cfg(target_family = "unix")]
-pub fn get_metadata(d: &Path, use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
+pub fn get_metadata<P: AsRef<Path>>(
+    path: P,
+    use_apparent_size: bool,
+    follow_links: bool,
+) -> Option<(u64, Option<InodeAndDevice>, FileTime)> {
     use std::os::unix::fs::MetadataExt;
-    match d.metadata() {
+    let metadata = if follow_links {
+        path.as_ref().metadata()
+    } else {
+        path.as_ref().symlink_metadata()
+    };
+    match metadata {
         Ok(md) => {
             if use_apparent_size {
-                Some((md.len(), Some((md.ino(), md.dev()))))
+                Some((
+                    md.len(),
+                    Some((md.ino(), md.dev())),
+                    (md.mtime(), md.atime(), md.ctime()),
+                ))
             } else {
-                Some((md.blocks() * get_block_size(), Some((md.ino(), md.dev()))))
+                Some((
+                    md.blocks() * get_block_size(),
+                    Some((md.ino(), md.dev())),
+                    (md.mtime(), md.atime(), md.ctime()),
+                ))
             }
         }
         Err(_e) => None,
@@ -26,7 +46,11 @@ pub fn get_metadata(d: &Path, use_apparent_size: bool) -> Option<(u64, Option<(u
 }
 
 #[cfg(target_family = "windows")]
-pub fn get_metadata(d: &Path, _use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
+pub fn get_metadata<P: AsRef<Path>>(
+    path: P,
+    use_apparent_size: bool,
+    follow_links: bool,
+) -> Option<(u64, Option<InodeAndDevice>, FileTime)> {
     // On windows opening the file to get size, file ID and volume can be very
     // expensive because 1) it causes a few system calls, and more importantly 2) it can cause
     // windows defender to scan the file.
@@ -65,7 +89,7 @@ pub fn get_metadata(d: &Path, _use_apparent_size: bool) -> Option<(u64, Option<(
 
     use std::io;
     use winapi_util::Handle;
-    fn handle_from_path_limited<P: AsRef<Path>>(path: P) -> io::Result<Handle> {
+    fn handle_from_path_limited(path: &Path) -> io::Result<Handle> {
         use std::fs::OpenOptions;
         use std::os::windows::fs::OpenOptionsExt;
         const FILE_READ_ATTRIBUTES: u32 = 0x0080;
@@ -90,39 +114,87 @@ pub fn get_metadata(d: &Path, _use_apparent_size: bool) -> Option<(u64, Option<(
         Ok(Handle::from_file(file))
     }
 
-    fn get_metadata_expensive(d: &Path) -> Option<(u64, Option<(u64, u64)>)> {
+    fn get_metadata_expensive(
+        path: &Path,
+        use_apparent_size: bool,
+    ) -> Option<(u64, Option<InodeAndDevice>, FileTime)> {
         use winapi_util::file::information;
 
-        let h = handle_from_path_limited(d).ok()?;
+        let h = handle_from_path_limited(path).ok()?;
         let info = information(&h).ok()?;
 
-        Some((
-            info.file_size(),
-            Some((info.file_index(), info.volume_serial_number())),
-        ))
+        if use_apparent_size {
+            use filesize::PathExt;
+            Some((
+                path.size_on_disk().ok()?,
+                Some((info.file_index(), info.volume_serial_number())),
+                (
+                    info.last_write_time().unwrap() as i64,
+                    info.last_access_time().unwrap() as i64,
+                    info.creation_time().unwrap() as i64,
+                ),
+            ))
+        } else {
+            Some((
+                info.file_size(),
+                Some((info.file_index(), info.volume_serial_number())),
+                (
+                    info.last_write_time().unwrap() as i64,
+                    info.last_access_time().unwrap() as i64,
+                    info.creation_time().unwrap() as i64,
+                ),
+            ))
+        }
     }
 
     use std::os::windows::fs::MetadataExt;
-    match d.metadata() {
+    let path = path.as_ref();
+    let metadata = if follow_links {
+        path.metadata()
+    } else {
+        path.symlink_metadata()
+    };
+    match metadata {
         Ok(ref md) => {
-            const FILE_ATTRIBUTE_ARCHIVE: u32 = 0x20u32;
-            const FILE_ATTRIBUTE_READONLY: u32 = 0x1u32;
-            const FILE_ATTRIBUTE_HIDDEN: u32 = 0x2u32;
-            const FILE_ATTRIBUTE_SYSTEM: u32 = 0x4u32;
-            const FILE_ATTRIBUTE_NORMAL: u32 = 0x80u32;
-            const FILE_ATTRIBUTE_DIRECTORY: u32 = 0x10u32;
-
+            const FILE_ATTRIBUTE_ARCHIVE: u32 = 0x20;
+            const FILE_ATTRIBUTE_READONLY: u32 = 0x01;
+            const FILE_ATTRIBUTE_HIDDEN: u32 = 0x02;
+            const FILE_ATTRIBUTE_SYSTEM: u32 = 0x04;
+            const FILE_ATTRIBUTE_NORMAL: u32 = 0x80;
+            const FILE_ATTRIBUTE_DIRECTORY: u32 = 0x10;
+            const FILE_ATTRIBUTE_SPARSE_FILE: u32 = 0x00000200;
+            const FILE_ATTRIBUTE_PINNED: u32 = 0x00080000;
+            const FILE_ATTRIBUTE_UNPINNED: u32 = 0x00100000;
+            const FILE_ATTRIBUTE_RECALL_ON_OPEN: u32 = 0x00040000;
+            const FILE_ATTRIBUTE_RECALL_ON_DATA_ACCESS: u32 = 0x00400000;
+            const FILE_ATTRIBUTE_OFFLINE: u32 = 0x00001000;
+            // normally FILE_ATTRIBUTE_SPARSE_FILE would be enough, however Windows sometimes likes to mask it out. see: https://stackoverflow.com/q/54560454
+            const IS_PROBABLY_ONEDRIVE: u32 = FILE_ATTRIBUTE_SPARSE_FILE
+                | FILE_ATTRIBUTE_PINNED
+                | FILE_ATTRIBUTE_UNPINNED
+                | FILE_ATTRIBUTE_RECALL_ON_OPEN
+                | FILE_ATTRIBUTE_RECALL_ON_DATA_ACCESS
+                | FILE_ATTRIBUTE_OFFLINE;
             let attr_filtered = md.file_attributes()
                 & !(FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_SYSTEM);
-            if attr_filtered == FILE_ATTRIBUTE_ARCHIVE
-                || attr_filtered == FILE_ATTRIBUTE_DIRECTORY
-                || md.file_attributes() == FILE_ATTRIBUTE_NORMAL
+            if ((attr_filtered & FILE_ATTRIBUTE_ARCHIVE) != 0
+                || (attr_filtered & FILE_ATTRIBUTE_DIRECTORY) != 0
+                || md.file_attributes() == FILE_ATTRIBUTE_NORMAL)
+                && !((attr_filtered & IS_PROBABLY_ONEDRIVE != 0) && use_apparent_size)
             {
-                Some((md.len(), None))
+                Some((
+                    md.len(),
+                    None,
+                    (
+                        md.last_write_time() as i64,
+                        md.last_access_time() as i64,
+                        md.creation_time() as i64,
+                    ),
+                ))
             } else {
-                get_metadata_expensive(d)
+                get_metadata_expensive(path, use_apparent_size)
             }
         }
-        _ => get_metadata_expensive(d),
+        _ => get_metadata_expensive(path, use_apparent_size),
     }
 }

src/progress.rs

@@ -0,0 +1,159 @@
+use std::{
+    collections::HashSet,
+    io::Write,
+    path::Path,
+    sync::{
+        atomic::{AtomicU8, AtomicUsize, Ordering},
+        mpsc::{self, RecvTimeoutError, Sender},
+        Arc, RwLock,
+    },
+    thread::JoinHandle,
+    time::Duration,
+};
+
+#[cfg(not(target_has_atomic = "64"))]
+use portable_atomic::AtomicU64;
+#[cfg(target_has_atomic = "64")]
+use std::sync::atomic::AtomicU64;
+
+use crate::display::human_readable_number;
+
+/* -------------------------------------------------------------------------- */
+
+pub const ORDERING: Ordering = Ordering::Relaxed;
+
+const SPINNER_SLEEP_TIME: u64 = 100;
+const PROGRESS_CHARS: [char; 4] = ['-', '\\', '|', '/'];
+const PROGRESS_CHARS_LEN: usize = PROGRESS_CHARS.len();
+
+pub trait ThreadSyncTrait<T> {
+    fn set(&self, val: T);
+    fn get(&self) -> T;
+}
+
+#[derive(Default)]
+pub struct ThreadStringWrapper {
+    inner: RwLock<String>,
+}
+
+impl ThreadSyncTrait<String> for ThreadStringWrapper {
+    fn set(&self, val: String) {
+        *self.inner.write().unwrap() = val;
+    }
+
+    fn get(&self) -> String {
+        (*self.inner.read().unwrap()).clone()
+    }
+}
+
+/* -------------------------------------------------------------------------- */
+
+// creating an enum this way allows to have simpler syntax compared to a Mutex or a RwLock
+#[allow(non_snake_case)]
+pub mod Operation {
+    pub const INDEXING: u8 = 0;
+    pub const PREPARING: u8 = 1;
+}
+
+#[derive(Default)]
+pub struct PAtomicInfo {
+    pub num_files: AtomicUsize,
+    pub total_file_size: AtomicU64,
+    pub state: AtomicU8,
+    pub current_path: ThreadStringWrapper,
+}
+
+impl PAtomicInfo {
+    pub fn clear_state(&self, dir: &Path) {
+        self.state.store(Operation::INDEXING, ORDERING);
+        let dir_name = dir.to_string_lossy().to_string();
+        self.current_path.set(dir_name);
+        self.total_file_size.store(0, ORDERING);
+        self.num_files.store(0, ORDERING);
+    }
+}
+
+#[derive(Default)]
+pub struct RuntimeErrors {
+    pub no_permissions: HashSet<String>,
+    pub file_not_found: HashSet<String>,
+    pub unknown_error: HashSet<String>,
+    pub interrupted_error: i32,
+    pub abort: bool,
+}
+
+/* -------------------------------------------------------------------------- */
+
+fn format_preparing_str(prog_char: char, data: &PAtomicInfo, output_display: &str) -> String {
+    let path_in = data.current_path.get();
+    let size = human_readable_number(data.total_file_size.load(ORDERING), output_display);
+    format!("Preparing: {path_in} {size} ... {prog_char}")
+}
+
+fn format_indexing_str(prog_char: char, data: &PAtomicInfo, output_display: &str) -> String {
+    let path_in = data.current_path.get();
+    let file_count = data.num_files.load(ORDERING);
+    let size = human_readable_number(data.total_file_size.load(ORDERING), output_display);
+    let file_str = format!("{file_count} files, {size}");
+    format!("Indexing: {path_in} {file_str} ... {prog_char}")
+}
+
+pub struct PIndicator {
+    pub thread: Option<(Sender<()>, JoinHandle<()>)>,
+    pub data: Arc<PAtomicInfo>,
+}
+
+impl PIndicator {
+    pub fn build_me() -> Self {
+        Self {
+            thread: None,
+            data: Arc::new(PAtomicInfo {
+                ..Default::default()
+            }),
+        }
+    }
+
+    pub fn spawn(&mut self, output_display: String) {
+        let data = self.data.clone();
+        let (stop_handler, receiver) = mpsc::channel::<()>();
+
+        let time_info_thread = std::thread::spawn(move || {
+            let mut progress_char_i: usize = 0;
+            let mut stdout = std::io::stdout();
+            let mut msg = "".to_string();
+
+            // While the timeout triggers we go round the loop
+            // If we disconnect or the sender sends its message we exit the while loop
+            while let Err(RecvTimeoutError::Timeout) =
+                receiver.recv_timeout(Duration::from_millis(SPINNER_SLEEP_TIME))
+            {
+                // Clear the text written by 'write!'& Return at the start of line
+                print!("\r{:width$}", " ", width = msg.len());
+                let prog_char = PROGRESS_CHARS[progress_char_i];
+
+                msg = match data.state.load(ORDERING) {
+                    Operation::INDEXING => format_indexing_str(prog_char, &data, &output_display),
+                    Operation::PREPARING => format_preparing_str(prog_char, &data, &output_display),
+                    _ => panic!("Unknown State"),
+                };
+
+                write!(stdout, "\r{msg}").unwrap();
+                stdout.flush().unwrap();
+
+                progress_char_i += 1;
+                progress_char_i %= PROGRESS_CHARS_LEN;
+            }
+            print!("\r{:width$}", " ", width = msg.len());
+            print!("\r");
+            stdout.flush().unwrap();
+        });
+        self.thread = Some((stop_handler, time_info_thread))
+    }
+
+    pub fn stop(self) {
+        if let Some((stop_handler, thread)) = self.thread {
+            stop_handler.send(()).unwrap();
+            thread.join().unwrap();
+        }
+    }
+}

src/utils.rs

@@ -2,16 +2,19 @@ use platform::get_metadata;
 use std::collections::HashSet;
 use std::path::{Path, PathBuf};
 
+use crate::config::DAY_SECONDS;
+
+use crate::dir_walker::Operator;
 use crate::platform;
 use regex::Regex;
 
-pub fn simplify_dir_names<P: AsRef<Path>>(filenames: Vec<P>) -> HashSet<PathBuf> {
-    let mut top_level_names: HashSet<PathBuf> = HashSet::with_capacity(filenames.len());
-    let mut to_remove: Vec<PathBuf> = Vec::with_capacity(filenames.len());
+pub fn simplify_dir_names<P: AsRef<Path>>(dirs: &[P]) -> HashSet<PathBuf> {
+    let mut top_level_names: HashSet<PathBuf> = HashSet::with_capacity(dirs.len());
 
-    for t in filenames {
+    for t in dirs {
         let top_level_name = normalize_path(t);
         let mut can_add = true;
+        let mut to_remove: Vec<PathBuf> = Vec::new();
 
         for tt in top_level_names.iter() {
             if is_a_parent_of(&top_level_name, tt) {
@@ -20,9 +23,9 @@ pub fn simplify_dir_names<P: AsRef<Path>>(filenames: Vec<P>) -> HashSet<PathBuf>
                 can_add = false;
             }
         }
-        to_remove.sort_unstable();
-        top_level_names.retain(|tr| to_remove.binary_search(tr).is_err());
-        to_remove.clear();
+        for r in to_remove {
+            top_level_names.remove(&r);
+        }
         if can_add {
             top_level_names.insert(top_level_name);
         }
@@ -31,17 +34,24 @@ pub fn simplify_dir_names<P: AsRef<Path>>(filenames: Vec<P>) -> HashSet<PathBuf>
     top_level_names
 }
 
-pub fn get_filesystem_devices<'a, P: IntoIterator<Item = &'a PathBuf>>(paths: P) -> HashSet<u64> {
+pub fn get_filesystem_devices<P: AsRef<Path>>(paths: &[P], follow_links: bool) -> HashSet<u64> {
+    use std::fs;
     // Gets the device ids for the filesystems which are used by the argument paths
     paths
-        .into_iter()
+        .iter()
         .filter_map(|p| {
-            let meta = get_metadata(p, false);
-
-            if let Some((_size, Some((_id, dev)))) = meta {
-                Some(dev)
+            let follow_links = if follow_links {
+                // slow path: If dereference-links is set, then we check if the file is a symbolic link
+                match fs::symlink_metadata(p) {
+                    Ok(metadata) => metadata.file_type().is_symlink(),
+                    Err(_) => false,
+                }
             } else {
-                None
+                false
+            };
+            match get_metadata(p, false, follow_links) {
+                Some((_size, Some((_id, dev)), _time)) => Some(dev),
+                _ => None,
             }
         })
         .collect()
@@ -54,7 +64,7 @@ pub fn normalize_path<P: AsRef<Path>>(path: P) -> PathBuf {
     // 3. removing trailing extra separators and '.' ("current directory") path segments
     // * `Path.components()` does all the above work; ref: <https://doc.rust-lang.org/std/path/struct.Path.html#method.components>
     // 4. changing to os preferred separator (automatically done by recollecting components back into a PathBuf)
-    path.as_ref().components().collect::<PathBuf>()
+    path.as_ref().components().collect()
 }
 
 pub fn is_filtered_out_due_to_regex(filter_regex: &[Regex], dir: &Path) -> bool {
@@ -67,6 +77,20 @@ pub fn is_filtered_out_due_to_regex(filter_regex: &[Regex], dir: &Path) -> bool
     }
 }
 
+pub fn is_filtered_out_due_to_file_time(
+    filter_time: &Option<(Operator, i64)>,
+    actual_time: i64,
+) -> bool {
+    match filter_time {
+        None => false,
+        Some((Operator::Equal, bound_time)) => {
+            !(actual_time >= *bound_time && actual_time < *bound_time + DAY_SECONDS)
+        }
+        Some((Operator::GreaterThan, bound_time)) => actual_time < *bound_time,
+        Some((Operator::LessThan, bound_time)) => actual_time > *bound_time,
+    }
+}
+
 pub fn is_filtered_out_due_to_invert_regex(filter_regex: &[Regex], dir: &Path) -> bool {
     filter_regex
         .iter()
@@ -87,14 +111,15 @@ mod tests {
     fn test_simplify_dir() {
         let mut correct = HashSet::new();
         correct.insert(PathBuf::from("a"));
-        assert_eq!(simplify_dir_names(vec!["a"]), correct);
+        assert_eq!(simplify_dir_names(&["a"]), correct);
     }
 
     #[test]
     fn test_simplify_dir_rm_subdir() {
         let mut correct = HashSet::new();
         correct.insert(["a", "b"].iter().collect::<PathBuf>());
-        assert_eq!(simplify_dir_names(vec!["a/b", "a/b/c", "a/b/d/f"]), correct);
+        assert_eq!(simplify_dir_names(&["a/b/c", "a/b", "a/b/d/f"]), correct);
+        assert_eq!(simplify_dir_names(&["a/b", "a/b/c", "a/b/d/f"]), correct);
     }
 
     #[test]
@@ -103,7 +128,7 @@ mod tests {
         correct.insert(["a", "b"].iter().collect::<PathBuf>());
         correct.insert(PathBuf::from("c"));
         assert_eq!(
-            simplify_dir_names(vec![
+            simplify_dir_names(&[
                 "a/b",
                 "a/b//",
                 "a/././b///",
@@ -122,14 +147,14 @@ mod tests {
         correct.insert(PathBuf::from("b"));
         correct.insert(["c", "a", "b"].iter().collect::<PathBuf>());
         correct.insert(["a", "b"].iter().collect::<PathBuf>());
-        assert_eq!(simplify_dir_names(vec!["a/b", "c/a/b/", "b"]), correct);
+        assert_eq!(simplify_dir_names(&["a/b", "c/a/b/", "b"]), correct);
     }
 
     #[test]
     fn test_simplify_dir_dots() {
         let mut correct = HashSet::new();
         correct.insert(PathBuf::from("src"));
-        assert_eq!(simplify_dir_names(vec!["src/."]), correct);
+        assert_eq!(simplify_dir_names(&["src/."]), correct);
     }
 
     #[test]
@@ -137,7 +162,7 @@ mod tests {
         let mut correct = HashSet::new();
         correct.insert(PathBuf::from("src"));
         correct.insert(PathBuf::from("src_v2"));
-        assert_eq!(simplify_dir_names(vec!["src/", "src_v2"]), correct);
+        assert_eq!(simplify_dir_names(&["src/", "src_v2"]), correct);
     }
 
     #[test]

tests/test_dir_hidden_entries/.hidden_file

@@ -1 +1,2 @@
-hi
+something
+.secret

tests/test_exact_output.rs

@@ -1,9 +1,11 @@
 use assert_cmd::Command;
 use std::ffi::OsStr;
-use std::str;
+use std::process::Output;
 use std::sync::Once;
+use std::{io, str};
 
 static INIT: Once = Once::new();
+static UNREADABLE_DIR_PATH: &str = "/tmp/unreadable_dir";
 
 /**
  * This file contains tests that verify the exact output of the command.
@@ -17,23 +19,32 @@ static INIT: Once = Once::new();
 /// Copy to /tmp dir - we assume that the formatting of the /tmp partition
 /// is consistent. If the tests fail your /tmp filesystem probably differs
 fn copy_test_data(dir: &str) {
-    // First remove the existing directory - just incase it is there and has incorrect data
+    // First remove the existing directory - just in case it is there and has incorrect data
     let last_slash = dir.rfind('/').unwrap();
     let last_part_of_dir = dir.chars().skip(last_slash).collect::<String>();
-    match Command::new("rm")
+    let _ = Command::new("rm")
         .arg("-rf")
         .arg("/tmp/".to_owned() + &*last_part_of_dir)
+        .ok();
+
+    let _ = Command::new("cp")
+        .arg("-r")
+        .arg(dir)
+        .arg("/tmp/")
         .ok()
+        .map_err(|err| eprintln!("Error copying directory for test setup\n{:?}", err));
+}
+
+fn create_unreadable_directory() -> io::Result<()> {
+    #[cfg(unix)]
     {
-        Ok(_) => {}
-        Err(_) => {}
-    };
-    match Command::new("cp").arg("-r").arg(dir).arg("/tmp/").ok() {
-        Ok(_) => {}
-        Err(err) => {
-            eprintln!("Error copying directory {:?}", err);
-        }
-    };
+        use std::fs;
+        use std::fs::Permissions;
+        use std::os::unix::fs::PermissionsExt;
+        fs::create_dir_all(UNREADABLE_DIR_PATH)?;
+        fs::set_permissions(UNREADABLE_DIR_PATH, Permissions::from_mode(0))?;
+    }
+    Ok(())
 }
 
 fn initialize() {
@@ -41,21 +52,42 @@ fn initialize() {
         copy_test_data("tests/test_dir");
         copy_test_data("tests/test_dir2");
         copy_test_data("tests/test_dir_unicode");
+
+        if let Err(e) = create_unreadable_directory() {
+            panic!("Failed to create unreadable directory: {}", e);
+        }
     });
 }
 
-fn exact_output_test<T: AsRef<OsStr>>(valid_outputs: Vec<String>, command_args: Vec<T>) {
+fn run_cmd<T: AsRef<OsStr>>(command_args: &[T]) -> Output {
     initialize();
-
-    let mut a = &mut Command::cargo_bin("dust").unwrap();
+    let mut to_run = &mut Command::cargo_bin("dust").unwrap();
     for p in command_args {
-        a = a.arg(p);
+        to_run = to_run.arg(p);
     }
-    let output: String = str::from_utf8(&a.unwrap().stdout).unwrap().into();
+    to_run.unwrap()
+}
 
-    assert!(valid_outputs
-        .iter()
-        .fold(false, |sum, i| sum || output.contains(i)));
+fn exact_stdout_test<T: AsRef<OsStr>>(command_args: &[T], valid_stdout: Vec<String>) {
+    let to_run = run_cmd(command_args);
+
+    let stdout_output = str::from_utf8(&to_run.stdout).unwrap().to_owned();
+    let will_fail = valid_stdout.iter().any(|i| stdout_output.contains(i));
+    if !will_fail {
+        eprintln!(
+            "output(stdout):\n{}\ndoes not contain any of:\n{}",
+            stdout_output,
+            valid_stdout.join("\n\n")
+        );
+    }
+    assert!(will_fail);
+}
+
+fn exact_stderr_test<T: AsRef<OsStr>>(command_args: &[T], valid_stderr: String) {
+    let to_run = run_cmd(command_args);
+
+    let stderr_output = str::from_utf8(&to_run.stderr).unwrap().trim();
+    assert_eq!(stderr_output, valid_stderr);
 }
 
 // "windows" result data can vary by host (size seems to be variable by one byte); fix code vs test and re-enable
@@ -63,38 +95,39 @@ fn exact_output_test<T: AsRef<OsStr>>(valid_outputs: Vec<String>, command_args:
 #[test]
 pub fn test_main_basic() {
     // -c is no color mode - This makes testing much simpler
-    exact_output_test(main_output(), vec!["-c", "/tmp/test_dir/"])
+    exact_stdout_test(&["-c", "-B", "/tmp/test_dir/"], main_output());
 }
 
 #[cfg_attr(target_os = "windows", ignore)]
 #[test]
 pub fn test_main_multi_arg() {
-    let command_args = vec![
+    let command_args = [
         "-c",
+        "-B",
         "/tmp/test_dir/many/",
         "/tmp/test_dir",
         "/tmp/test_dir",
     ];
-    exact_output_test(main_output(), command_args);
+    exact_stdout_test(&command_args, main_output());
 }
 
 fn main_output() -> Vec<String> {
     // Some linux currently thought to be Manjaro, Arch
     // Although probably depends on how drive is formatted
     let mac_and_some_linux = r#"
-   0B     ┌── a_file    │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█ │   0%
- 4.0K     ├── hello_file│████████████████████████████████████████████████ │ 100%
- 4.0K   ┌─┴ many        │████████████████████████████████████████████████ │ 100%
- 4.0K ┌─┴ test_dir      │████████████████████████████████████████████████ │ 100%
- "#
+  0B     ┌── a_file    │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█ │   0%
+4.0K     ├── hello_file│█████████████████████████████████████████████████ │ 100%
+4.0K   ┌─┴ many        │█████████████████████████████████████████████████ │ 100%
+4.0K ┌─┴ test_dir      │█████████████████████████████████████████████████ │ 100%
+"#
     .trim()
     .to_string();
 
     let ubuntu = r#"
-   0B     ┌── a_file    │               ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█ │   0%
- 4.0K     ├── hello_file│               ░░░░░░░░░░░░░░░░█████████████████ │  33%
- 8.0K   ┌─┴ many        │               █████████████████████████████████ │  67%
-  12K ┌─┴ test_dir      │████████████████████████████████████████████████ │ 100%
+  0B     ┌── a_file    │                ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█ │   0%
+4.0K     ├── hello_file│                ░░░░░░░░░░░░░░░░█████████████████ │  33%
+8.0K   ┌─┴ many        │                █████████████████████████████████ │  67%
+ 12K ┌─┴ test_dir      │█████████████████████████████████████████████████ │ 100%
   "#
     .trim()
     .to_string();
@@ -105,59 +138,59 @@ fn main_output() -> Vec<String> {
 #[cfg_attr(target_os = "windows", ignore)]
 #[test]
 pub fn test_main_long_paths() {
-    let command_args = vec!["-c", "-p", "/tmp/test_dir/"];
-    exact_output_test(main_output_long_paths(), command_args);
+    let command_args = ["-c", "-p", "-B", "/tmp/test_dir/"];
+    exact_stdout_test(&command_args, main_output_long_paths());
 }
 
 fn main_output_long_paths() -> Vec<String> {
     let mac_and_some_linux = r#"
-   0B     ┌── /tmp/test_dir/many/a_file    │░░░░░░░░░░░░░░░░░░░░░░░░░░░░█ │   0%
- 4.0K     ├── /tmp/test_dir/many/hello_file│█████████████████████████████ │ 100%
- 4.0K   ┌─┴ /tmp/test_dir/many             │█████████████████████████████ │ 100%
- 4.0K ┌─┴ /tmp/test_dir                    │█████████████████████████████ │ 100%
+  0B     ┌── /tmp/test_dir/many/a_file    │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█ │   0%
+4.0K     ├── /tmp/test_dir/many/hello_file│██████████████████████████████ │ 100%
+4.0K   ┌─┴ /tmp/test_dir/many             │██████████████████████████████ │ 100%
+4.0K ┌─┴ /tmp/test_dir                    │██████████████████████████████ │ 100%
 "#
     .trim()
     .to_string();
     let ubuntu = r#"
-   0B     ┌── /tmp/test_dir/many/a_file    │         ░░░░░░░░░░░░░░░░░░░█ │   0%
- 4.0K     ├── /tmp/test_dir/many/hello_file│         ░░░░░░░░░░██████████ │  33%
- 8.0K   ┌─┴ /tmp/test_dir/many             │         ████████████████████ │  67%
-  12K ┌─┴ /tmp/test_dir                    │█████████████████████████████ │ 100%
+  0B     ┌── /tmp/test_dir/many/a_file    │         ░░░░░░░░░░░░░░░░░░░░█ │   0%
+4.0K     ├── /tmp/test_dir/many/hello_file│         ░░░░░░░░░░███████████ │  33%
+8.0K   ┌─┴ /tmp/test_dir/many             │         █████████████████████ │  67%
+ 12K ┌─┴ /tmp/test_dir                    │██████████████████████████████ │ 100%
 "#
     .trim()
     .to_string();
     vec![mac_and_some_linux, ubuntu]
 }
 
-// Check against directories and files whos names are substrings of each other
+// Check against directories and files whose names are substrings of each other
 #[cfg_attr(target_os = "windows", ignore)]
 #[test]
 pub fn test_substring_of_names_and_long_names() {
-    let command_args = vec!["-c", "/tmp/test_dir2"];
-    exact_output_test(no_substring_of_names_output(), command_args);
+    let command_args = ["-c", "-B", "/tmp/test_dir2"];
+    exact_stdout_test(&command_args, no_substring_of_names_output());
 }
 
 fn no_substring_of_names_output() -> Vec<String> {
     let ubuntu = "
-   0B   ┌── long_dir_name_what_a_very_long_dir_name_what_happens_when_this_goe..
- 4.0K   ├── dir_name_clash
- 4.0K   │ ┌── hello
- 8.0K   ├─┴ dir
- 4.0K   │ ┌── hello
- 8.0K   ├─┴ dir_substring
-  24K ┌─┴ test_dir2
+  0B   ┌── long_dir_name_what_a_very_long_dir_name_what_happens_when_this_goes..
+4.0K   ├── dir_name_clash
+4.0K   │ ┌── hello
+8.0K   ├─┴ dir
+4.0K   │ ┌── hello
+8.0K   ├─┴ dir_substring
+ 24K ┌─┴ test_dir2
     "
     .trim()
     .into();
 
     let mac_and_some_linux = "
-   0B   ┌── long_dir_name_what_a_very_long_dir_name_what_happens_when_this_goe..
- 4.0K   │ ┌── hello
- 4.0K   ├─┴ dir
- 4.0K   ├── dir_name_clash
- 4.0K   │ ┌── hello
- 4.0K   ├─┴ dir_substring
-  12K ┌─┴ test_dir2
+  0B   ┌── long_dir_name_what_a_very_long_dir_name_what_happens_when_this_goes..
+4.0K   │ ┌── hello
+4.0K   ├─┴ dir
+4.0K   ├── dir_name_clash
+4.0K   │ ┌── hello
+4.0K   ├─┴ dir_substring
+ 12K ┌─┴ test_dir2
   "
     .trim()
     .into();
@@ -167,24 +200,24 @@ fn no_substring_of_names_output() -> Vec<String> {
 #[cfg_attr(target_os = "windows", ignore)]
 #[test]
 pub fn test_unicode_directories() {
-    let command_args = vec!["-c", "/tmp/test_dir_unicode"];
-    exact_output_test(unicode_dir(), command_args);
+    let command_args = ["-c", "-B", "/tmp/test_dir_unicode"];
+    exact_stdout_test(&command_args, unicode_dir());
 }
 
 fn unicode_dir() -> Vec<String> {
     // The way unicode & asian characters are rendered on the terminal should make this line up
     let ubuntu = "
-   0B   ┌── ラウトは難しいです！.japan│                                 █ │   0%
-   0B   ├── 👩.unicode                │                                 █ │   0%
- 4.0K ┌─┴ test_dir_unicode            │██████████████████████████████████ │ 100%
+  0B   ┌── ラウトは難しいです！.japan│                                  █ │   0%
+  0B   ├── 👩.unicode                │                                  █ │   0%
+4.0K ┌─┴ test_dir_unicode            │███████████████████████████████████ │ 100%
     "
     .trim()
     .into();
 
     let mac_and_some_linux = "
-   0B   ┌── ラウトは難しいです！.japan│                                 █ │   0%
-   0B   ├── 👩.unicode                │                                 █ │   0%
-   0B ┌─┴ test_dir_unicode            │                                 █ │   0%
+0B   ┌── ラウトは難しいです！.japan│                                    █ │   0%
+0B   ├── 👩.unicode                │                                    █ │   0%
+0B ┌─┴ test_dir_unicode            │                                    █ │   0%
     "
     .trim()
     .into();
@@ -194,18 +227,48 @@ fn unicode_dir() -> Vec<String> {
 #[cfg_attr(target_os = "windows", ignore)]
 #[test]
 pub fn test_apparent_size() {
-    let command_args = vec!["-c", "-s", "-b", "/tmp/test_dir"];
-    exact_output_test(apparent_size_output(), command_args);
+    let command_args = ["-c", "-s", "-b", "/tmp/test_dir"];
+    exact_stdout_test(&command_args, apparent_size_output());
 }
 
 fn apparent_size_output() -> Vec<String> {
-    // The apparent directory sizes are too unpredictable and system dependant to try and match
-    let files = r#"
-   0B     ┌── a_file
-   6B     ├── hello_file
+    // The apparent directory sizes are too unpredictable and system dependent to try and match
+    let one_space_before = r#"
+ 0B     ┌── a_file
+ 6B     ├── hello_file
  "#
     .trim()
     .to_string();
 
-    vec![files]
+    let two_space_before = r#"
+  0B     ┌── a_file
+  6B     ├── hello_file
+ "#
+    .trim()
+    .to_string();
+
+    vec![one_space_before, two_space_before]
+}
+
+#[cfg_attr(target_os = "windows", ignore)]
+#[test]
+pub fn test_permission_normal() {
+    let command_args = [UNREADABLE_DIR_PATH];
+    let permission_msg =
+        r#"Did not have permissions for all directories (add --print-errors to see errors)"#
+            .trim()
+            .to_string();
+    exact_stderr_test(&command_args, permission_msg);
+}
+
+#[cfg_attr(target_os = "windows", ignore)]
+#[test]
+pub fn test_permission_flag() {
+    // add the flag to CLI
+    let command_args = ["--print-errors", UNREADABLE_DIR_PATH];
+    let permission_msg = format!(
+        "Did not have permissions for directories: {}",
+        UNREADABLE_DIR_PATH
+    );
+    exact_stderr_test(&command_args, permission_msg);
 }

tests/test_flags.rs

@@ -9,11 +9,15 @@ use std::str;
  */
 
 fn build_command<T: AsRef<OsStr>>(command_args: Vec<T>) -> String {
-    let mut a = &mut Command::cargo_bin("dust").unwrap();
+    let mut cmd = &mut Command::cargo_bin("dust").unwrap();
     for p in command_args {
-        a = a.arg(p);
+        cmd = cmd.arg(p);
     }
-    str::from_utf8(&a.unwrap().stdout).unwrap().into()
+    let finished = &cmd.unwrap();
+    let stderr = str::from_utf8(&finished.stderr).unwrap();
+    assert_eq!(stderr, "");
+
+    str::from_utf8(&finished.stdout).unwrap().into()
 }
 
 // We can at least test the file names are there
@@ -55,27 +59,46 @@ pub fn test_d_flag_works() {
     assert!(!output.contains("hello_file"));
 }
 
+#[test]
+pub fn test_threads_flag_works() {
+    let output = build_command(vec!["-T", "1", "tests/test_dir/"]);
+    assert!(output.contains("hello_file"));
+}
+
 #[test]
 pub fn test_d_flag_works_and_still_recurses_down() {
     // We had a bug where running with '-d 1' would stop at the first directory and the code
     // would fail to recurse down
     let output = build_command(vec!["-d", "1", "-f", "-c", "tests/test_dir2/"]);
+    assert!(output.contains("1   ┌── dir"));
     assert!(output.contains("4 ┌─┴ test_dir2"));
 }
 
-// Check against directories and files whos names are substrings of each other
+// Check against directories and files whose names are substrings of each other
 #[test]
 pub fn test_ignore_dir() {
     let output = build_command(vec!["-c", "-X", "dir_substring", "tests/test_dir2/"]);
     assert!(!output.contains("dir_substring"));
 }
 
+#[test]
+pub fn test_ignore_all_in_file() {
+    let output = build_command(vec![
+        "-c",
+        "-I",
+        "tests/test_dir_hidden_entries/.hidden_file",
+        "tests/test_dir_hidden_entries/",
+    ]);
+    assert!(output.contains(" test_dir_hidden_entries"));
+    assert!(!output.contains(".secret"));
+}
+
 #[test]
 pub fn test_with_bad_param() {
     let mut cmd = Command::cargo_bin("dust").unwrap();
-    let stderr = cmd.arg("-").unwrap().stderr;
-    let stderr = str::from_utf8(&stderr).unwrap();
-    assert!(stderr.contains("Did not have permissions for all directories"));
+    let result = cmd.arg("bad_place").unwrap();
+    let stderr = str::from_utf8(&result.stderr).unwrap();
+    assert!(stderr.contains("No such file or directory"));
 }
 
 #[test]
@@ -112,6 +135,43 @@ pub fn test_show_files_by_type() {
     assert!(output.contains("┌─┴ (total)"));
 }
 
+#[test]
+#[cfg(target_family = "unix")]
+pub fn test_show_files_only() {
+    let output = build_command(vec!["-c", "-F", "tests/test_dir"]);
+    assert!(output.contains("a_file"));
+    assert!(output.contains("hello_file"));
+    assert!(!output.contains("many"));
+}
+
+#[test]
+pub fn test_output_skip_total() {
+    let output = build_command(vec![
+        "--skip-total",
+        "tests/test_dir/many/hello_file",
+        "tests/test_dir/many/a_file",
+    ]);
+    assert!(output.contains("hello_file"));
+    assert!(!output.contains("(total)"));
+}
+
+#[test]
+pub fn test_output_screen_reader() {
+    let output = build_command(vec!["--screen-reader", "-c", "tests/test_dir/"]);
+    println!("{}", output);
+    assert!(output.contains("test_dir   0"));
+    assert!(output.contains("many       1"));
+    assert!(output.contains("hello_file 2"));
+    assert!(output.contains("a_file     2"));
+
+    // Verify no 'symbols' reported by screen reader
+    assert!(!output.contains('│'));
+
+    for block in ['█', '▓', '▒', '░'] {
+        assert!(!output.contains(block));
+    }
+}
+
 #[test]
 pub fn test_show_files_by_regex_match_lots() {
     // Check we can see '.rs' files in the tests directory
@@ -178,3 +238,26 @@ pub fn test_show_files_by_invert_regex_match_multiple() {
     assert!(!output.contains("test_dir_unicode"));
     assert!(output.contains("many"));
 }
+
+#[test]
+pub fn test_no_color() {
+    let output = build_command(vec!["-c"]);
+    // Red is 31
+    assert!(!output.contains("\x1B[31m"));
+    assert!(!output.contains("\x1B[0m"));
+}
+
+#[test]
+pub fn test_force_color() {
+    let output = build_command(vec!["-C"]);
+    // Red is 31
+    assert!(output.contains("\x1B[31m"));
+    assert!(output.contains("\x1B[0m"));
+}
+
+#[test]
+pub fn test_collapse() {
+    let output = build_command(vec!["--collapse", "many", "tests/test_dir/"]);
+    assert!(output.contains("many"));
+    assert!(!output.contains("hello_file"));
+}

tests/tests_symlinks.rs

@@ -1,41 +1,15 @@
 use assert_cmd::Command;
-use std::cmp::max;
 use std::fs::File;
 use std::io::Write;
 use std::path::PathBuf;
 use std::str;
 
-use terminal_size::{terminal_size, Height, Width};
-use unicode_width::UnicodeWidthStr;
-
 use tempfile::Builder;
 use tempfile::TempDir;
 
 // File sizes differ on both platform and on the format of the disk.
 // Windows: `ln` is not usually an available command; creation of symbolic links requires special enhanced permissions
 
-fn get_width_of_terminal() -> u16 {
-    if let Some((Width(w), Height(_h))) = terminal_size() {
-        max(w, 80)
-    } else {
-        80
-    }
-}
-
-// Mac test runners create tmp files with very long names, hence it may be shortened in the output
-fn get_file_name(name: String) -> String {
-    let terminal_plus_buffer = (get_width_of_terminal() - 12) as usize;
-    if UnicodeWidthStr::width(&*name) > terminal_plus_buffer {
-        let trimmed_name = name
-            .chars()
-            .take(terminal_plus_buffer - 2)
-            .collect::<String>();
-        trimmed_name + ".."
-    } else {
-        name
-    }
-}
-
 fn build_temp_file(dir: &TempDir) -> PathBuf {
     let file_path = dir.path().join("notes.txt");
     let mut file = File::create(&file_path).unwrap();
@@ -43,6 +17,18 @@ fn build_temp_file(dir: &TempDir) -> PathBuf {
     file_path
 }
 
+fn link_it(link_path: PathBuf, file_path_s: &str, is_soft: bool) -> String {
+    let link_name_s = link_path.to_str().unwrap();
+    let mut c = Command::new("ln");
+    if is_soft {
+        c.arg("-s");
+    }
+    c.arg(file_path_s);
+    c.arg(link_name_s);
+    assert!(c.output().is_ok());
+    link_name_s.into()
+}
+
 #[cfg_attr(target_os = "windows", ignore)]
 #[test]
 pub fn test_soft_sym_link() {
@@ -52,20 +38,18 @@ pub fn test_soft_sym_link() {
     let file_path_s = file.to_str().unwrap();
 
     let link_name = dir.path().join("the_link");
-    let link_name_s = link_name.to_str().unwrap();
-    let c = Command::new("ln")
-        .arg("-s")
-        .arg(file_path_s)
-        .arg(link_name_s)
-        .output();
-    assert!(c.is_ok());
+    let link_name_s = link_it(link_name, file_path_s, true);
 
-    let c = format!(" ├── {}", get_file_name(link_name_s.into()));
-    let b = format!(" ┌── {}", get_file_name(file_path_s.into()));
+    let c = format!(" ├── {}", link_name_s);
+    let b = format!(" ┌── {}", file_path_s);
     let a = format!("─┴ {}", dir_s);
 
     let mut cmd = Command::cargo_bin("dust").unwrap();
-    let output = cmd.arg("-p").arg("-c").arg("-s").arg(dir_s).unwrap().stdout;
+    // Mac test runners create long filenames in tmp directories
+    let output = cmd
+        .args(["-p", "-c", "-s", "-w", "999", dir_s])
+        .unwrap()
+        .stdout;
 
     let output = str::from_utf8(&output).unwrap();
 
@@ -83,25 +67,48 @@ pub fn test_hard_sym_link() {
     let file_path_s = file.to_str().unwrap();
 
     let link_name = dir.path().join("the_link");
-    let link_name_s = link_name.to_str().unwrap();
-    let c = Command::new("ln")
-        .arg(file_path_s)
-        .arg(link_name_s)
-        .output();
-    assert!(c.is_ok());
+    link_it(link_name, file_path_s, false);
 
-    let link_output = format!(" ┌── {}", get_file_name(link_name_s.into()));
-    let file_output = format!(" ┌── {}", get_file_name(file_path_s.into()));
+    let file_output = format!(" ┌── {}", file_path_s);
     let dirs_output = format!("─┴ {}", dir_s);
 
     let mut cmd = Command::cargo_bin("dust").unwrap();
-    let output = cmd.arg("-p").arg("-c").arg(dir_s).unwrap().stdout;
+    // Mac test runners create long filenames in tmp directories
+    let output = cmd.args(["-p", "-c", "-w", "999", dir_s]).unwrap().stdout;
 
-    // Because this is a hard link the file and hard link look identical. Therefore
-    // we cannot guarantee which version will appear first.
+    // The link should not appear in the output because multiple inodes are now ordered
+    // then filtered.
     let output = str::from_utf8(&output).unwrap();
     assert!(output.contains(dirs_output.as_str()));
-    assert!(output.contains(link_output.as_str()) || output.contains(file_output.as_str()));
+    assert!(output.contains(file_output.as_str()));
+}
+
+#[cfg_attr(target_os = "windows", ignore)]
+#[test]
+pub fn test_hard_sym_link_no_dup_multi_arg() {
+    let dir = Builder::new().tempdir().unwrap();
+    let dir_link = Builder::new().tempdir().unwrap();
+    let file = build_temp_file(&dir);
+    let dir_s = dir.path().to_str().unwrap();
+    let dir_link_s = dir_link.path().to_str().unwrap();
+    let file_path_s = file.to_str().unwrap();
+
+    let link_name = dir_link.path().join("the_link");
+    let link_name_s = link_it(link_name, file_path_s, false);
+
+    let mut cmd = Command::cargo_bin("dust").unwrap();
+
+    // Mac test runners create long filenames in tmp directories
+    let output = cmd
+        .args(["-p", "-c", "-w", "999", "-b", dir_link_s, dir_s])
+        .unwrap()
+        .stdout;
+
+    // The link or the file should appear but not both
+    let output = str::from_utf8(&output).unwrap();
+    let has_file_only = output.contains(file_path_s) && !output.contains(&link_name_s);
+    let has_link_only = !output.contains(file_path_s) && output.contains(&link_name_s);
+    assert!(has_file_only || has_link_only);
 }
 
 #[cfg_attr(target_os = "windows", ignore)]
@@ -111,17 +118,10 @@ pub fn test_recursive_sym_link() {
     let dir_s = dir.path().to_str().unwrap();
 
     let link_name = dir.path().join("the_link");
-    let link_name_s = link_name.to_str().unwrap();
-
-    let c = Command::new("ln")
-        .arg("-s")
-        .arg(dir_s)
-        .arg(link_name_s)
-        .output();
-    assert!(c.is_ok());
+    let link_name_s = link_it(link_name, dir_s, true);
 
     let a = format!("─┬ {}", dir_s);
-    let b = format!(" └── {}", get_file_name(link_name_s.into()));
+    let b = format!(" └── {}", link_name_s);
 
     let mut cmd = Command::cargo_bin("dust").unwrap();
     let output = cmd
@@ -129,6 +129,8 @@ pub fn test_recursive_sym_link() {
         .arg("-c")
         .arg("-r")
         .arg("-s")
+        .arg("-w")
+        .arg("999")
         .arg(dir_s)
         .unwrap()
         .stdout;