Update version

README: Add another tool to list of alternatives
README: Remove -x option
2025-12-08 13:50:41 -08:00 · 2021-06-23 09:25:04 +01:00 · 2021-06-22 13:17:34 +01:00 · 2021-06-22 13:17:26 +01:00 · 2021-06-22 13:13:51 +01:00 · 2021-06-22 13:09:58 +01:00
16 changed files with 891 additions and 786 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,512 +1,520 @@
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+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "du-dust"
 description = "A more intuitive version of du"
-version = "0.5.3"
+version = "0.6.0"
 authors = ["bootandy <bootandy@gmail.com>", "nebkor <code@ardent.nebcorp.com>"]
 edition = "2018"

@@ -14,7 +14,7 @@ categories = ["command-line-utilities"]
 license = "Apache-2.0"

 [badges]
-travis-ci = {repository = "https://travis-ci.org/bootandy/dust"}
+travis-ci = { repository = "https://travis-ci.org/bootandy/dust" }

 [[bin]]
 name = "dust"
@@ -22,14 +22,12 @@ path = "src/main.rs"

 [dependencies]
 ansi_term = "0.12"
-clap = "=2.33"
+clap = { version = "=2.33", features = ["wrap_help"] }
 lscolors = "0.7"
 num_cpus = "1"
 terminal_size = "0.1"
 unicode-width = "0.1"
-ignore="0.4"
-crossbeam-channel = "0.4"
-walkdir="2.3"
+rayon="1"
 thousands = "0.2"
 stfu8 = "0.2"

@@ -37,10 +35,9 @@ stfu8 = "0.2"
 winapi-util = "0.1"

 [dev-dependencies]
-assert_cmd ="1"
+assert_cmd = "1"
 tempfile = "=3"

-
 [[test]]
 name = "integration"
 path = "tests/tests.rs"
--- a/README.md
+++ b/README.md
@@ -49,7 +49,6 @@ Usage: dust -s <dir>  (apparent-size - shows the length of the file as opposed t
 Usage: dust -n 30  <dir>  (shows 30 directories instead of the default)
 Usage: dust -d 3  <dir>  (shows 3 levels of subdirectories)
 Usage: dust -r  <dir>  (reverse order of output, with root at the lowest)
-Usage: dust -x  <dir>  (only show directories on the same filesystem)
 Usage: dust -X ignore  <dir>  (ignore all files and directories with the name 'ignore')
 Usage: dust -b <dir>  (do not show percentages or draw ASCII bars)
 ```
@@ -59,6 +58,9 @@ Usage: dust -b <dir>  (do not show percentages or draw ASCII bars)

 * [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.
--- a/ci/how2publish.txt
+++ b/ci/how2publish.txt
@@ -1,6 +1,6 @@
 # ----------- To do a release ---------
 # edit version in cargo.toml
-# tag a commit and push:
+# tag a commit and push (increment version first):
 #   git tag v0.4.5
 #   git push origin v0.4.5

--- a/src/dirwalker.rs
+++ b/src/dirwalker.rs
@@ -0,0 +1,176 @@
+use std::fs;
+
+use crate::node::Node;
+use rayon::iter::ParallelBridge;
+use rayon::prelude::ParallelIterator;
+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;
+
+pub fn walk_it(
+    dirs: HashSet<PathBuf>,
+    ignore_directories: HashSet<PathBuf>,
+    use_apparent_size: bool,
+    by_filecount: bool,
+    ignore_hidden: bool,
+) -> (Vec<Node>, bool) {
+    let permissions_flag = AtomicBool::new(false);
+
+    let top_level_nodes: Vec<_> = dirs
+        .into_iter()
+        .filter_map(|d| {
+            let n = walk(
+                d,
+                &permissions_flag,
+                &ignore_directories,
+                use_apparent_size,
+                by_filecount,
+                ignore_hidden,
+            );
+            match n {
+                Some(n) => {
+                    let mut inodes: HashSet<(u64, u64)> = HashSet::new();
+                    clean_inodes(n, &mut inodes, use_apparent_size)
+                }
+                None => None,
+            }
+        })
+        .collect();
+    (top_level_nodes, permissions_flag.into_inner())
+}
+
+// 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 {
+        if let Some(id) = x.inode_device {
+            if inodes.contains(&id) {
+                return None;
+            }
+            inodes.insert(id);
+        }
+    }
+
+    let new_children: Vec<_> = x
+        .children
+        .into_iter()
+        .filter_map(|c| clean_inodes(c, inodes, use_apparent_size))
+        .collect();
+
+    return Some(Node {
+        name: x.name,
+        size: x.size + new_children.iter().map(|c| c.size).sum::<u64>(),
+        children: new_children,
+        inode_device: x.inode_device,
+    });
+}
+
+fn ignore_file(
+    entry: &DirEntry,
+    ignore_hidden: bool,
+    ignore_directories: &HashSet<PathBuf>,
+) -> bool {
+    let is_dot_file = entry.file_name().to_str().unwrap_or("").starts_with('.');
+    let is_ignored_path = ignore_directories.contains(&entry.path());
+    (is_dot_file && ignore_hidden) || is_ignored_path
+}
+
+fn walk(
+    dir: PathBuf,
+    permissions_flag: &AtomicBool,
+    ignore_directories: &HashSet<PathBuf>,
+    use_apparent_size: bool,
+    by_filecount: bool,
+    ignore_hidden: bool,
+) -> Option<Node> {
+    let mut children = vec![];
+
+    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, use_apparent_size, by_filecount, ignore_hidden);
+
+                    if !ignore_file(&entry, ignore_hidden, &ignore_directories) {
+                        if let Ok(data) = entry.file_type() {
+                            if data.is_dir() && !data.is_symlink() {
+                                return walk(
+                                    entry.path(),
+                                    permissions_flag,
+                                    ignore_directories,
+                                    use_apparent_size,
+                                    by_filecount,
+                                    ignore_hidden,
+                                );
+                            }
+                            return build_node(
+                                entry.path(),
+                                vec![],
+                                use_apparent_size,
+                                by_filecount,
+                            );
+                        }
+                    }
+                } else {
+                    permissions_flag.store(true, atomic::Ordering::Relaxed);
+                }
+                None
+            })
+            .collect();
+    } else {
+        permissions_flag.store(true, atomic::Ordering::Relaxed);
+    }
+    build_node(dir, children, use_apparent_size, by_filecount)
+}
+
+mod tests {
+    #[allow(unused_imports)]
+    use super::*;
+
+    #[cfg(test)]
+    fn create_node() -> Node {
+        Node {
+            name: PathBuf::new(),
+            size: 10,
+            children: vec![],
+            inode_device: Some((5, 6)),
+        }
+    }
+
+    #[test]
+    fn test_should_ignore_file() {
+        let mut inodes = HashSet::new();
+        let n = create_node();
+
+        // First time we insert the node
+        assert!(clean_inodes(n.clone(), &mut inodes, false) == Some(n.clone()));
+
+        // Second time is a duplicate - we ignore it
+        assert!(clean_inodes(n.clone(), &mut inodes, false) == None);
+    }
+
+    #[test]
+    fn test_should_not_ignore_files_if_using_apparent_size() {
+        let mut inodes = HashSet::new();
+        let n = create_node();
+
+        // 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()));
+    }
+}
--- a/src/display.rs
+++ b/src/display.rs
@@ -1,12 +1,10 @@
 extern crate ansi_term;

-use crate::utils::{Errors, Node};
+use crate::display_node::DisplayNode;

 use self::ansi_term::Colour::Red;
 use lscolors::{LsColors, Style};

-use terminal_size::{terminal_size, Height, Width};
-
 use unicode_width::UnicodeWidthStr;

 use stfu8::encode_u8;
@@ -20,7 +18,6 @@ use thousands::Separable;

 static UNITS: [char; 4] = ['T', 'G', 'M', 'K'];
 static BLOCKS: [char; 5] = ['█', '▓', '▒', '░', ' '];
-static DEFAULT_TERMINAL_WIDTH: u16 = 80;

 pub struct DisplayData {
    pub short_paths: bool,
@@ -63,7 +60,7 @@ impl DisplayData {
        }
    }

-    fn percent_size(&self, node: &Node) -> f32 {
+    fn percent_size(&self, node: &DisplayNode) -> f32 {
        let result = node.size as f32 / self.base_size as f32;
        if result.is_normal() {
            result
@@ -86,7 +83,7 @@ impl DrawData<'_> {
    }

    // TODO: can we test this?
-    fn generate_bar(&self, node: &Node, level: usize) -> String {
+    fn generate_bar(&self, node: &DisplayNode, level: usize) -> 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;
@@ -108,30 +105,25 @@ impl DrawData<'_> {
    }
 }

-fn get_width_of_terminal() -> u16 {
-    // Windows CI runners detect a very low terminal width
-    if let Some((Width(w), Height(_h))) = terminal_size() {
-        max(w, DEFAULT_TERMINAL_WIDTH)
-    } else {
-        DEFAULT_TERMINAL_WIDTH
-    }
-}
-
+#[allow(clippy::too_many_arguments)]
 pub fn draw_it(
-    errors: Errors,
+    permission_error: bool,
    use_full_path: bool,
    is_reversed: bool,
    no_colors: bool,
    no_percents: bool,
+    terminal_width: usize,
    by_filecount: bool,
-    root_node: Node,
+    option_root_node: Option<DisplayNode>,
 ) {
-    if errors.permissions {
+    if permission_error {
        eprintln!("Did not have permissions for all directories");
    }
-    if errors.not_found {
-        eprintln!("Not all directories were found");
+    if option_root_node.is_none() {
+        return;
    }
+    let root_node = option_root_node.unwrap();
+
    let num_chars_needed_on_left_most = if by_filecount {
        let max_size = root_node.children.iter().map(|n| n.size).fold(0, max);
        max_size.separate_with_commas().chars().count()
@@ -139,13 +131,10 @@ pub fn draw_it(
        5 // Under normal usage we need 5 chars to display the size of a directory
    };

-    let terminal_width = get_width_of_terminal() as usize - 9 - num_chars_needed_on_left_most;
+    let terminal_width = terminal_width - 9 - num_chars_needed_on_left_most;
    let num_indent_chars = 3;
-    let longest_string_length = root_node
-        .children
-        .iter()
-        .map(|c| find_longest_dir_name(&c, num_indent_chars, terminal_width, !use_full_path))
-        .fold(0, max);
+    let longest_string_length =
+        find_longest_dir_name(&root_node, num_indent_chars, terminal_width, !use_full_path);

    let max_bar_length = if no_percents || longest_string_length >= terminal_width as usize {
        0
@@ -155,27 +144,30 @@ pub fn draw_it(

    let first_size_bar = repeat(BLOCKS[0]).take(max_bar_length).collect::<String>();

-    for c in root_node.get_children_from_node(is_reversed) {
-        let display_data = DisplayData {
-            short_paths: !use_full_path,
-            is_reversed,
-            colors_on: !no_colors,
-            by_filecount,
-            num_chars_needed_on_left_most,
-            base_size: c.size,
-            longest_string_length,
-            ls_colors: LsColors::from_env().unwrap_or_default(),
-        };
-        let draw_data = DrawData {
-            indent: "".to_string(),
-            percent_bar: first_size_bar.clone(),
-            display_data: &display_data,
-        };
-        display_node(c, &draw_data, true, true);
-    }
+    let display_data = DisplayData {
+        short_paths: !use_full_path,
+        is_reversed,
+        colors_on: !no_colors,
+        by_filecount,
+        num_chars_needed_on_left_most,
+        base_size: root_node.size,
+        longest_string_length,
+        ls_colors: LsColors::from_env().unwrap_or_default(),
+    };
+    let draw_data = DrawData {
+        indent: "".to_string(),
+        percent_bar: first_size_bar,
+        display_data: &display_data,
+    };
+    display_node(root_node, &draw_data, true, true);
 }

-fn find_longest_dir_name(node: &Node, indent: usize, terminal: usize, long_paths: bool) -> usize {
+fn find_longest_dir_name(
+    node: &DisplayNode,
+    indent: usize,
+    terminal: usize,
+    long_paths: bool,
+) -> usize {
    let printable_name = get_printable_name(&node.name, long_paths);
    let longest = min(
        UnicodeWidthStr::width(&*printable_name) + 1 + indent,
@@ -189,7 +181,7 @@ fn find_longest_dir_name(node: &Node, indent: usize, terminal: usize, long_paths
        .fold(longest, max)
 }

-fn display_node(node: Node, 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;
@@ -264,11 +256,13 @@ fn get_printable_name<P: AsRef<Path>>(dir_name: &P, long_paths: bool) -> String
    encode_u8(printable_name.display().to_string().as_bytes())
 }

-fn pad_or_trim_filename(node: &Node, indent: &str, display_data: &DisplayData) -> String {
+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 width = UnicodeWidthStr::width(&*indent_and_name);

+    assert!(display_data.longest_string_length >= width);
+
    // Add spaces after the filename so we can draw the % used bar chart.
    let name_and_padding = name
        + &(repeat(" ")
@@ -291,7 +285,7 @@ fn maybe_trim_filename(name_in: String, display_data: &DisplayData) -> String {
 }

 pub fn format_string(
-    node: &Node,
+    node: &DisplayNode,
    indent: &str,
    percent_bar: &str,
    is_biggest: bool,
@@ -304,7 +298,7 @@ pub fn format_string(
 }

 fn get_name_percent(
-    node: &Node,
+    node: &DisplayNode,
    indent: &str,
    bar_chart: &str,
    display_data: &DisplayData,
@@ -321,7 +315,7 @@ fn get_name_percent(
    }
 }

-fn get_pretty_size(node: &Node, is_biggest: bool, display_data: &DisplayData) -> String {
+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 =
@@ -338,7 +332,11 @@ fn get_pretty_size(node: &Node, is_biggest: bool, display_data: &DisplayData) ->
    }
 }

-fn get_pretty_name(node: &Node, name_and_padding: String, display_data: &DisplayData) -> 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());
        let directory_color = display_data
@@ -389,7 +387,7 @@ mod tests {

    #[test]
    fn test_format_str() {
-        let n = Node {
+        let n = DisplayNode {
            name: PathBuf::from("/short"),
            size: 2_u64.pow(12), // This is 4.0K
            children: vec![],
@@ -411,7 +409,7 @@ mod tests {
    #[test]
    fn test_format_str_long_name() {
        let name = "very_long_name_longer_than_the_eighty_character_limit_very_long_name_this_bit_will_truncate";
-        let n = Node {
+        let n = DisplayNode {
            name: PathBuf::from(name),
            size: 2_u64.pow(12), // This is 4.0K
            children: vec![],
--- a/src/display_node.rs
+++ b/src/display_node.rs
@@ -0,0 +1,46 @@
+use std::cmp::Ordering;
+use std::path::PathBuf;
+
+#[derive(Debug, Eq, Clone)]
+pub struct DisplayNode {
+    pub name: PathBuf, //todo: consider moving to a string?
+    pub size: u64,
+    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> {
+        if is_reversed {
+            let children: Vec<DisplayNode> = self.children.clone().into_iter().rev().collect();
+            children.into_iter()
+        } else {
+            self.children.clone().into_iter()
+        }
+    }
+}
--- a/src/filter.rs
+++ b/src/filter.rs
@@ -0,0 +1,104 @@
+use crate::display_node::DisplayNode;
+use crate::node::Node;
+use std::collections::BinaryHeap;
+use std::collections::HashSet;
+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 fn get_biggest(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 mut heap = BinaryHeap::new();
+    let number_top_level_nodes = top_level_nodes.len();
+    let root = get_new_root(top_level_nodes);
+
+    root.children.iter().for_each(|c| heap.push(c));
+
+    let mut allowed_nodes = HashSet::new();
+    allowed_nodes.insert(&root.name);
+
+    for _ in number_top_level_nodes..n {
+        let line = heap.pop();
+        match line {
+            Some(line) => {
+                line.children.iter().for_each(|c| heap.push(c));
+                allowed_nodes.insert(&line.name);
+            }
+            None => break,
+        }
+    }
+    recursive_rebuilder(&allowed_nodes, &root)
+}
+
+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
+        .children
+        .iter()
+        .filter_map(|c| {
+            if allowed_nodes.contains(&c.name) {
+                recursive_rebuilder(allowed_nodes, c)
+            } else {
+                None
+            }
+        })
+        .collect();
+    new_children.sort();
+    new_children.reverse();
+    let newnode = DisplayNode {
+        name: current.name.clone(),
+        size: current.size,
+        children: new_children,
+    };
+    Some(newnode)
+}
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,22 +1,29 @@
 #[macro_use]
 extern crate clap;
-extern crate crossbeam_channel as channel;
-extern crate ignore;
+extern crate rayon;
 extern crate unicode_width;
-extern crate walkdir;
+
+use std::collections::HashSet;

 use self::display::draw_it;
-use crate::utils::is_a_parent_of;
 use clap::{App, AppSettings, Arg};
+use dirwalker::walk_it;
+use filter::{get_biggest, get_by_depth};
 use std::cmp::max;
 use std::path::PathBuf;
 use terminal_size::{terminal_size, Height, Width};
-use utils::{find_big_ones, get_dir_tree, simplify_dir_names, sort, Node};
+use utils::simplify_dir_names;

+mod dirwalker;
 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 {
@@ -52,6 +59,15 @@ fn get_height_of_terminal() -> usize {
    }
 }

+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
+    }
+}
+
 fn main() {
    let default_height = get_height_of_terminal();
    let def_num_str = default_height.to_string();
@@ -65,13 +81,14 @@ fn main() {
                .short("d")
                .long("depth")
                .help("Depth to show")
-                .takes_value(true),
+                .takes_value(true)
+                .conflicts_with("number_of_lines"),
        )
        .arg(
            Arg::with_name("number_of_lines")
                .short("n")
                .long("number-of-lines")
-                .help("Number of lines of output to show")
+                .help("Number of lines of output to show. This is Height, (but h is help)")
                .takes_value(true)
                .default_value(def_num_str.as_ref()),
        )
@@ -90,12 +107,6 @@ fn main() {
                .multiple(true)
                .help("Exclude any file or directory with this name"),
        )
-        .arg(
-            Arg::with_name("limit_filesystem")
-                .short("x")
-                .long("limit-filesystem")
-                .help("Only count the files and directories on the same filesystem as the supplied directory"),
-        )
        .arg(
            Arg::with_name("display_apparent_size")
                .short("s")
@@ -132,7 +143,14 @@ fn main() {
                .long("ignore_hidden")
                .help("Obey .git_ignore rules & Do not display hidden files"),
        )
-
+        .arg(
+            Arg::with_name("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::with_name("inputs").multiple(true))
        .get_matches();

@@ -151,6 +169,11 @@ fn main() {
        }
    };

+    let terminal_width = match value_t!(options.value_of("width"), usize) {
+        Ok(v) => v,
+        Err(_) => get_width_of_terminal(),
+    };
+
    let depth = options.value_of("depth").and_then(|depth| {
        depth
            .parse::<usize>()
@@ -158,38 +181,38 @@ fn main() {
            .map_err(|_| eprintln!("Ignoring bad value for depth"))
            .ok()
    });
-    if options.is_present("depth") && number_of_lines != default_height {
-        eprintln!("Use either -n or -d. Not both");
-        return;
-    }

    let no_colors = init_color(options.is_present("no_colors"));
    let use_apparent_size = options.is_present("display_apparent_size");
-    let limit_filesystem = options.is_present("limit_filesystem");
-    let ignore_directories = match options.values_of("ignore_directory") {
-        Some(i) => Some(i.map(PathBuf::from).collect()),
-        None => None,
-    };
+    let ignore_directories: Vec<PathBuf> = options
+        .values_of("ignore_directory")
+        .map(|i| i.map(PathBuf::from).collect())
+        .unwrap_or_default();
+
    let by_filecount = options.is_present("by_filecount");
-    let show_hidden = !options.is_present("ignore_hidden");
+    let ignore_hidden = options.is_present("ignore_hidden");

    let simplified_dirs = simplify_dir_names(target_dirs);
-    let (errors, nodes) = get_dir_tree(
-        &simplified_dirs,
-        &ignore_directories,
+
+    let ignored_full_path: HashSet<PathBuf> = ignore_directories
+        .into_iter()
+        .flat_map(|x| simplified_dirs.iter().map(move |d| d.join(x.clone())))
+        .collect();
+
+    let (nodes, errors) = walk_it(
+        simplified_dirs,
+        ignored_full_path,
        use_apparent_size,
-        limit_filesystem,
        by_filecount,
-        show_hidden,
+        ignore_hidden,
    );
-    let sorted_data = sort(nodes);
-    let biggest_ones = {
+
+    let tree = {
        match depth {
-            None => find_big_ones(sorted_data, number_of_lines),
-            Some(_) => sorted_data,
+            None => get_biggest(nodes, number_of_lines),
+            Some(depth) => get_by_depth(nodes, depth),
        }
    };
-    let tree = build_tree(biggest_ones, depth);

    draw_it(
        errors,
@@ -197,39 +220,8 @@ fn main() {
        !options.is_present("reverse"),
        no_colors,
        options.is_present("no_bars"),
+        terminal_width,
        by_filecount,
        tree,
    );
 }
-
-fn build_tree(biggest_ones: Vec<(PathBuf, u64)>, depth: Option<usize>) -> Node {
-    let mut top_parent = Node::default();
-
-    // assume sorted order
-    for b in biggest_ones {
-        let n = Node {
-            name: b.0,
-            size: b.1,
-            children: Vec::default(),
-        };
-        recursively_build_tree(&mut top_parent, n, depth);
-    }
-    top_parent
-}
-
-fn recursively_build_tree(parent_node: &mut Node, new_node: Node, depth: Option<usize>) {
-    let new_depth = match depth {
-        None => None,
-        Some(0) => return,
-        Some(d) => Some(d - 1),
-    };
-    if let Some(c) = parent_node
-        .children
-        .iter_mut()
-        .find(|c| is_a_parent_of(&c.name, &new_node.name))
-    {
-        recursively_build_tree(c, new_node, new_depth);
-    } else {
-        parent_node.children.push(new_node);
-    }
-}
--- a/src/node.rs
+++ b/src/node.rs
@@ -0,0 +1,54 @@
+use crate::platform::get_metadata;
+
+use std::cmp::Ordering;
+use std::path::PathBuf;
+
+#[derive(Debug, Eq, Clone)]
+pub struct Node {
+    pub name: PathBuf,
+    pub size: u64,
+    pub children: Vec<Node>,
+    pub inode_device: Option<(u64, u64)>,
+}
+
+pub fn build_node(
+    dir: PathBuf,
+    children: Vec<Node>,
+    use_apparent_size: bool,
+    by_filecount: bool,
+) -> Option<Node> {
+    match get_metadata(&dir, use_apparent_size) {
+        Some(data) => {
+            let (size, inode_device) = if by_filecount { (1, data.1) } else { data };
+            Some(Node {
+                name: dir,
+                size,
+                children,
+                inode_device,
+            })
+        }
+        None => None,
+    }
+}
+
+impl PartialEq for Node {
+    fn eq(&self, other: &Self) -> bool {
+        self.name == other.name && self.size == other.size && self.children == other.children
+    }
+}
+
+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)
+        }
+    }
+}
+
+impl PartialOrd for Node {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
--- a/src/utils/platform.rs
+++ b/src/utils/platform.rs
@@ -1,7 +1,8 @@
-use ignore::DirEntry;
 #[allow(unused_imports)]
 use std::fs;

+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
@@ -10,7 +11,7 @@ fn get_block_size() -> u64 {
 }

 #[cfg(target_family = "unix")]
-pub fn get_metadata(d: &DirEntry, use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
+pub fn get_metadata(d: &Path, use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
    use std::os::unix::fs::MetadataExt;
    match d.metadata() {
        Ok(md) => {
@@ -25,7 +26,7 @@ pub fn get_metadata(d: &DirEntry, use_apparent_size: bool) -> Option<(u64, Optio
 }

 #[cfg(target_family = "windows")]
-pub fn get_metadata(d: &DirEntry, _use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
+pub fn get_metadata(d: &Path, _use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
    // 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.
@@ -63,7 +64,6 @@ pub fn get_metadata(d: &DirEntry, _use_apparent_size: bool) -> Option<(u64, Opti
    // With this optimization:         8 sec.

    use std::io;
-    use std::path::Path;
    use winapi_util::Handle;
    fn handle_from_path_limited<P: AsRef<Path>>(path: P) -> io::Result<Handle> {
        use std::fs::OpenOptions;
@@ -90,10 +90,10 @@ pub fn get_metadata(d: &DirEntry, _use_apparent_size: bool) -> Option<(u64, Opti
        Ok(Handle::from_file(file))
    }

-    fn get_metadata_expensive(d: &DirEntry) -> Option<(u64, Option<(u64, u64)>)> {
+    fn get_metadata_expensive(d: &Path) -> Option<(u64, Option<(u64, u64)>)> {
        use winapi_util::file::information;

-        let h = handle_from_path_limited(d.path()).ok()?;
+        let h = handle_from_path_limited(d).ok()?;
        let info = information(&h).ok()?;

        Some((
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -0,0 +1,126 @@
+use std::collections::HashSet;
+use std::path::{Path, PathBuf};
+
+fn is_a_parent_of<P: AsRef<Path>>(parent: P, child: P) -> bool {
+    let parent = parent.as_ref();
+    let child = child.as_ref();
+    child.starts_with(parent) && !parent.starts_with(child)
+}
+
+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());
+
+    for t in filenames {
+        let top_level_name = normalize_path(t);
+        let mut can_add = true;
+
+        for tt in top_level_names.iter() {
+            if is_a_parent_of(&top_level_name, tt) {
+                to_remove.push(tt.to_path_buf());
+            } else if is_a_parent_of(tt, &top_level_name) {
+                can_add = false;
+            }
+        }
+        to_remove.sort_unstable();
+        top_level_names.retain(|tr| to_remove.binary_search(tr).is_err());
+        to_remove.clear();
+        if can_add {
+            top_level_names.insert(top_level_name);
+        }
+    }
+
+    top_level_names
+}
+
+pub fn normalize_path<P: AsRef<Path>>(path: P) -> PathBuf {
+    // normalize path ...
+    // 1. removing repeated separators
+    // 2. removing interior '.' ("current directory") path segments
+    // 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>()
+}
+
+mod tests {
+    #[allow(unused_imports)]
+    use super::*;
+
+    #[test]
+    fn test_simplify_dir() {
+        let mut correct = HashSet::new();
+        correct.insert(PathBuf::from("a"));
+        assert_eq!(simplify_dir_names(vec!["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);
+    }
+
+    #[test]
+    fn test_simplify_dir_duplicates() {
+        let mut correct = HashSet::new();
+        correct.insert(["a", "b"].iter().collect::<PathBuf>());
+        correct.insert(PathBuf::from("c"));
+        assert_eq!(
+            simplify_dir_names(vec![
+                "a/b",
+                "a/b//",
+                "a/././b///",
+                "c",
+                "c/",
+                "c/.",
+                "c/././",
+                "c/././."
+            ]),
+            correct
+        );
+    }
+    #[test]
+    fn test_simplify_dir_rm_subdir_and_not_substrings() {
+        let mut correct = HashSet::new();
+        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);
+    }
+
+    #[test]
+    fn test_simplify_dir_dots() {
+        let mut correct = HashSet::new();
+        correct.insert(PathBuf::from("src"));
+        assert_eq!(simplify_dir_names(vec!["src/."]), correct);
+    }
+
+    #[test]
+    fn test_simplify_dir_substring_names() {
+        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);
+    }
+
+    #[test]
+    fn test_is_a_parent_of() {
+        assert!(is_a_parent_of("/usr", "/usr/andy"));
+        assert!(is_a_parent_of("/usr", "/usr/andy/i/am/descendant"));
+        assert!(!is_a_parent_of("/usr", "/usr/."));
+        assert!(!is_a_parent_of("/usr", "/usr/"));
+        assert!(!is_a_parent_of("/usr", "/usr"));
+        assert!(!is_a_parent_of("/usr/", "/usr"));
+        assert!(!is_a_parent_of("/usr/andy", "/usr"));
+        assert!(!is_a_parent_of("/usr/andy", "/usr/sibling"));
+        assert!(!is_a_parent_of("/usr/folder", "/usr/folder_not_a_child"));
+    }
+
+    #[test]
+    fn test_is_a_parent_of_root() {
+        assert!(is_a_parent_of("/", "/usr/andy"));
+        assert!(is_a_parent_of("/", "/usr"));
+        assert!(!is_a_parent_of("/", "/"));
+    }
+}
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -1,402 +0,0 @@
-use std::cmp::Ordering;
-use std::collections::HashMap;
-use std::collections::HashSet;
-use std::path::{Path, PathBuf};
-use std::sync::atomic::AtomicBool;
-
-use channel::Receiver;
-use std::thread::JoinHandle;
-
-use ignore::{WalkBuilder, WalkState};
-use std::sync::atomic;
-use std::thread;
-
-mod platform;
-use self::platform::*;
-
-type PathData = (PathBuf, u64, Option<(u64, u64)>);
-
-#[derive(Debug, Default, Eq, Clone)]
-pub struct Node {
-    pub name: PathBuf,
-    pub size: u64,
-    pub children: Vec<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)
-        }
-    }
-}
-
-impl PartialOrd for Node {
-    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-impl PartialEq for Node {
-    fn eq(&self, other: &Self) -> bool {
-        self.name == other.name && self.size == other.size && self.children == other.children
-    }
-}
-
-impl Node {
-    pub fn num_siblings(&self) -> u64 {
-        self.children.len() as u64
-    }
-
-    pub fn get_children_from_node(&self, is_reversed: bool) -> impl Iterator<Item = Node> {
-        if is_reversed {
-            let children: Vec<Node> = self.children.clone().into_iter().rev().collect();
-            children.into_iter()
-        } else {
-            self.children.clone().into_iter()
-        }
-    }
-}
-
-pub struct Errors {
-    pub permissions: bool,
-    pub not_found: bool,
-}
-
-pub fn is_a_parent_of<P: AsRef<Path>>(parent: P, child: P) -> bool {
-    let parent = parent.as_ref();
-    let child = child.as_ref();
-    child.starts_with(parent) && !parent.starts_with(child)
-}
-
-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());
-
-    for t in filenames {
-        let top_level_name = normalize_path(t);
-        let mut can_add = true;
-
-        for tt in top_level_names.iter() {
-            if is_a_parent_of(&top_level_name, tt) {
-                to_remove.push(tt.to_path_buf());
-            } else if is_a_parent_of(tt, &top_level_name) {
-                can_add = false;
-            }
-        }
-        to_remove.sort_unstable();
-        top_level_names.retain(|tr| to_remove.binary_search(tr).is_err());
-        to_remove.clear();
-        if can_add {
-            top_level_names.insert(top_level_name);
-        }
-    }
-
-    top_level_names
-}
-
-fn prepare_walk_dir_builder<P: AsRef<Path>>(
-    top_level_names: &HashSet<P>,
-    limit_filesystem: bool,
-    show_hidden: bool,
-) -> WalkBuilder {
-    let mut it = top_level_names.iter();
-    let mut builder = WalkBuilder::new(it.next().unwrap());
-    builder.follow_links(false);
-    if show_hidden {
-        builder.hidden(false);
-        builder.ignore(false);
-        builder.git_global(false);
-        builder.git_ignore(false);
-        builder.git_exclude(false);
-    }
-
-    if limit_filesystem {
-        builder.same_file_system(true);
-    }
-
-    for b in it {
-        builder.add(b);
-    }
-    builder
-}
-
-fn is_not_found(e: &ignore::Error) -> bool {
-    use ignore::Error;
-    if let Error::WithPath { err, .. } = e {
-        if let Error::Io(e) = &**err {
-            if e.kind() == std::io::ErrorKind::NotFound {
-                return true;
-            }
-        }
-    }
-    false
-}
-
-pub fn get_dir_tree<P: AsRef<Path>>(
-    top_level_names: &HashSet<P>,
-    ignore_directories: &Option<Vec<PathBuf>>,
-    apparent_size: bool,
-    limit_filesystem: bool,
-    by_filecount: bool,
-    show_hidden: bool,
-) -> (Errors, HashMap<PathBuf, u64>) {
-    let (tx, rx) = channel::bounded::<PathData>(1000);
-
-    let permissions_flag = AtomicBool::new(false);
-    let not_found_flag = AtomicBool::new(false);
-
-    let t2 = top_level_names
-        .iter()
-        .map(|p| p.as_ref().to_path_buf())
-        .collect();
-
-    let t = create_reader_thread(rx, t2, apparent_size);
-    let walk_dir_builder = prepare_walk_dir_builder(top_level_names, limit_filesystem, show_hidden);
-
-    walk_dir_builder.build_parallel().run(|| {
-        let txc = tx.clone();
-        let pf = &permissions_flag;
-        let nf = &not_found_flag;
-        Box::new(move |path| {
-            match path {
-                Ok(p) => {
-                    if let Some(dirs) = ignore_directories {
-                        let path = p.path();
-                        let parts = path.components().collect::<Vec<std::path::Component>>();
-                        for d in dirs {
-                            if parts
-                                .windows(d.components().count())
-                                .any(|window| window.iter().collect::<PathBuf>() == *d)
-                            {
-                                return WalkState::Continue;
-                            }
-                        }
-                    }
-
-                    let maybe_size_and_inode = get_metadata(&p, apparent_size);
-
-                    match maybe_size_and_inode {
-                        Some(data) => {
-                            let (size, inode_device) =
-                                if by_filecount { (1, data.1) } else { data };
-                            txc.send((p.into_path(), size, inode_device)).unwrap();
-                        }
-                        None => {
-                            pf.store(true, atomic::Ordering::Relaxed);
-                        }
-                    }
-                }
-                Err(e) => {
-                    if is_not_found(&e) {
-                        nf.store(true, atomic::Ordering::Relaxed);
-                    } else {
-                        pf.store(true, atomic::Ordering::Relaxed);
-                    }
-                }
-            };
-            WalkState::Continue
-        })
-    });
-
-    drop(tx);
-    let data = t.join().unwrap();
-    let errors = Errors {
-        permissions: permissions_flag.load(atomic::Ordering::SeqCst),
-        not_found: not_found_flag.load(atomic::Ordering::SeqCst),
-    };
-    (errors, data)
-}
-
-fn create_reader_thread(
-    rx: Receiver<PathData>,
-    top_level_names: HashSet<PathBuf>,
-    apparent_size: bool,
-) -> JoinHandle<HashMap<PathBuf, u64>> {
-    // Receiver thread
-    thread::spawn(move || {
-        let mut hash: HashMap<PathBuf, u64> = HashMap::new();
-        let mut inodes: HashSet<(u64, u64)> = HashSet::new();
-
-        for dent in rx {
-            let (path, size, maybe_inode_device) = dent;
-
-            if should_ignore_file(apparent_size, &mut inodes, maybe_inode_device) {
-                continue;
-            } else {
-                for p in path.ancestors() {
-                    let s = hash.entry(p.to_path_buf()).or_insert(0);
-                    *s += size;
-
-                    if top_level_names.contains(p) {
-                        break;
-                    }
-                }
-            }
-        }
-        hash
-    })
-}
-
-pub fn normalize_path<P: AsRef<Path>>(path: P) -> PathBuf {
-    // normalize path ...
-    // 1. removing repeated separators
-    // 2. removing interior '.' ("current directory") path segments
-    // 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>()
-}
-
-fn should_ignore_file(
-    apparent_size: bool,
-    inodes: &mut HashSet<(u64, u64)>,
-    maybe_inode_device: Option<(u64, u64)>,
-) -> bool {
-    match maybe_inode_device {
-        None => false,
-        Some(data) => {
-            let (inode, device) = data;
-            if !apparent_size {
-                // Ignore files already visited or symlinked
-                if inodes.contains(&(inode, device)) {
-                    return true;
-                }
-                inodes.insert((inode, device));
-            }
-            false
-        }
-    }
-}
-
-pub fn sort_by_size_first_name_second(a: &(PathBuf, u64), b: &(PathBuf, u64)) -> Ordering {
-    let result = b.1.cmp(&a.1);
-    if result == Ordering::Equal {
-        a.0.cmp(&b.0)
-    } else {
-        result
-    }
-}
-
-pub fn sort(data: HashMap<PathBuf, u64>) -> Vec<(PathBuf, u64)> {
-    let mut new_l: Vec<(PathBuf, u64)> = data.iter().map(|(a, b)| (a.clone(), *b)).collect();
-    new_l.sort_unstable_by(sort_by_size_first_name_second);
-    new_l
-}
-
-pub fn find_big_ones(new_l: Vec<(PathBuf, u64)>, max_to_show: usize) -> Vec<(PathBuf, u64)> {
-    if max_to_show > 0 && new_l.len() > max_to_show {
-        new_l[0..max_to_show].to_vec()
-    } else {
-        new_l
-    }
-}
-
-mod tests {
-    #[allow(unused_imports)]
-    use super::*;
-
-    #[test]
-    fn test_simplify_dir() {
-        let mut correct = HashSet::new();
-        correct.insert(PathBuf::from("a"));
-        assert_eq!(simplify_dir_names(vec!["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);
-    }
-
-    #[test]
-    fn test_simplify_dir_duplicates() {
-        let mut correct = HashSet::new();
-        correct.insert(["a", "b"].iter().collect::<PathBuf>());
-        correct.insert(PathBuf::from("c"));
-        assert_eq!(
-            simplify_dir_names(vec![
-                "a/b",
-                "a/b//",
-                "a/././b///",
-                "c",
-                "c/",
-                "c/.",
-                "c/././",
-                "c/././."
-            ]),
-            correct
-        );
-    }
-    #[test]
-    fn test_simplify_dir_rm_subdir_and_not_substrings() {
-        let mut correct = HashSet::new();
-        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);
-    }
-
-    #[test]
-    fn test_simplify_dir_dots() {
-        let mut correct = HashSet::new();
-        correct.insert(PathBuf::from("src"));
-        assert_eq!(simplify_dir_names(vec!["src/."]), correct);
-    }
-
-    #[test]
-    fn test_simplify_dir_substring_names() {
-        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);
-    }
-
-    #[test]
-    fn test_is_a_parent_of() {
-        assert!(is_a_parent_of("/usr", "/usr/andy"));
-        assert!(is_a_parent_of("/usr", "/usr/andy/i/am/descendant"));
-        assert!(!is_a_parent_of("/usr", "/usr/."));
-        assert!(!is_a_parent_of("/usr", "/usr/"));
-        assert!(!is_a_parent_of("/usr", "/usr"));
-        assert!(!is_a_parent_of("/usr/", "/usr"));
-        assert!(!is_a_parent_of("/usr/andy", "/usr"));
-        assert!(!is_a_parent_of("/usr/andy", "/usr/sibling"));
-        assert!(!is_a_parent_of("/usr/folder", "/usr/folder_not_a_child"));
-    }
-
-    #[test]
-    fn test_is_a_parent_of_root() {
-        assert!(is_a_parent_of("/", "/usr/andy"));
-        assert!(is_a_parent_of("/", "/usr"));
-        assert!(!is_a_parent_of("/", "/"));
-    }
-
-    #[test]
-    fn test_should_ignore_file() {
-        let mut files = HashSet::new();
-        files.insert((10, 20));
-
-        assert!(!should_ignore_file(true, &mut files, Some((0, 0))));
-
-        // New file is not known it will be inserted to the hashmp and should not be ignored
-        assert!(!should_ignore_file(false, &mut files, Some((11, 12))));
-        assert!(files.contains(&(11, 12)));
-
-        // The same file will be ignored the second time
-        assert!(should_ignore_file(false, &mut files, Some((11, 12))));
-    }
-
-    #[test]
-    fn test_should_ignore_file_on_different_device() {
-        let mut files = HashSet::new();
-        files.insert((10, 20));
-
-        // We do not ignore files on the same device
-        assert!(!should_ignore_file(false, &mut files, Some((2, 99))));
-        assert!(!should_ignore_file(true, &mut files, Some((2, 99))));
-    }
-}
--- a/tests/test_exact_output.rs
+++ b/tests/test_exact_output.rs
@@ -114,8 +114,6 @@ pub fn test_main_long_paths() {
        .unwrap()
        .stdout;
    let output = str::from_utf8(&assert).unwrap();
-    println!("{:?}", output.trim());
-    println!("{:?}", main_output_long_paths().trim());
    assert!(output.contains(&main_output_long_paths()));
 }

@@ -204,9 +202,9 @@ fn no_substring_of_names_output() -> String {
   0B   ┌── long_dir_name_what_a_very_long_dir_name_what_happens_when_this_g..
 4.0K   ├── dir_name_clash
 4.0K   │ ┌── hello
- 8.0K   ├─┴ dir_substring
- 4.0K   │ ┌── hello
 8.0K   ├─┴ dir
+ 4.0K   │ ┌── hello
+ 8.0K   ├─┴ dir_substring
  24K ┌─┴ test_dir2
    "
    .trim()
@@ -218,10 +216,10 @@ fn no_substring_of_names_output() -> String {
    "
   0B   ┌── long_dir_name_what_a_very_long_dir_name_what_happens_when_this_g..
 4.0K   │ ┌── hello
- 4.0K   ├─┴ dir_substring
+ 4.0K   ├─┴ dir
 4.0K   ├── dir_name_clash
 4.0K   │ ┌── hello
- 4.0K   ├─┴ dir
+ 4.0K   ├─┴ dir_substring
  12K ┌─┴ test_dir2
  "
    .trim()
@@ -247,8 +245,8 @@ pub fn test_unicode_directories() {
 fn unicode_dir() -> String {
    // The way unicode & asian characters are rendered on the terminal should make this line up
    "
-   0B   ┌── 👩.unicode                │                                 █ │   0%
-   0B   ├── ラウトは難しいです！.japan│                                 █ │   0%
+   0B   ┌── ラウトは難しいです！.japan│                                 █ │   0%
+   0B   ├── 👩.unicode                │                                 █ │   0%
 4.0K ┌─┴ test_dir_unicode            │██████████████████████████████████ │ 100%
    "
    .trim()
@@ -258,8 +256,8 @@ fn unicode_dir() -> String {
 #[cfg(target_os = "macos")]
 fn unicode_dir() -> String {
    "
-   0B   ┌── 👩.unicode                │                                 █ │   0%
-   0B   ├── ラウトは難しいです！.japan│                                 █ │   0%
+   0B   ┌── ラウトは難しいです！.japan│                                 █ │   0%
+   0B   ├── 👩.unicode                │                                 █ │   0%
   0B ┌─┴ test_dir_unicode            │                                 █ │   0%
    "
    .trim()
--- a/tests/test_flags.rs
+++ b/tests/test_flags.rs
@@ -142,8 +142,8 @@ pub fn test_number_of_files() {
        .unwrap()
        .stdout;
    let output = str::from_utf8(&output).unwrap();
-    assert!(output.contains("1     ┌── hello_file"));
-    assert!(output.contains("1     ├── a_file "));
+    assert!(output.contains("1     ┌── a_file "));
+    assert!(output.contains("1     ├── hello_file"));
    assert!(output.contains("3   ┌─┴ many"));
    assert!(output.contains("4 ┌─┴ test_dir"));
 }
--- a/tests/tests_symlinks.rs
+++ b/tests/tests_symlinks.rs
@@ -2,7 +2,6 @@ use assert_cmd::Command;
 use std::cmp::max;
 use std::fs::File;
 use std::io::Write;
-use std::panic;
 use std::path::PathBuf;
 use std::str;

@@ -61,12 +60,12 @@ pub fn test_soft_sym_link() {
        .output();
    assert!(c.is_ok());

-    let c = format!(" ┌── {}", get_file_name(link_name_s.into()));
-    let b = format!(" ├── {}", get_file_name(file_path_s.into()));
+    let c = format!(" ├── {}", get_file_name(link_name_s.into()));
+    let b = format!(" ┌── {}", get_file_name(file_path_s.into()));
    let a = format!("─┴ {}", dir_s);

    let mut cmd = Command::cargo_bin("dust").unwrap();
-    let output = cmd.arg("-p").arg("-c").arg(dir_s).unwrap().stdout;
+    let output = cmd.arg("-p").arg("-c").arg("-s").arg(dir_s).unwrap().stdout;

    let output = str::from_utf8(&output).unwrap();

@@ -125,9 +124,16 @@ pub fn test_recursive_sym_link() {
    let b = format!(" └── {}", get_file_name(link_name_s.into()));

    let mut cmd = Command::cargo_bin("dust").unwrap();
-    let output = cmd.arg("-p").arg("-c").arg("-r").arg(dir_s).unwrap().stdout;
-
+    let output = cmd
+        .arg("-p")
+        .arg("-c")
+        .arg("-r")
+        .arg("-s")
+        .arg(dir_s)
+        .unwrap()
+        .stdout;
    let output = str::from_utf8(&output).unwrap();
+
    assert!(output.contains(a.as_str()));
    assert!(output.contains(b.as_str()));
 }
Author	SHA1	Message	Date
andy.boot	5c45ed344f	Update version	2021-06-23 09:25:04 +01:00
andy.boot	a8725711fa	README: Add another tool to list of alternatives	2021-06-22 13:17:34 +01:00
andy.boot	811d3b065f	README: Remove -x option This behaviour was removed in previous commit	2021-06-22 13:17:26 +01:00
andy.boot	be7a9181b2	Add alternative tools	2021-06-22 13:13:51 +01:00
andy.boot	9dcd4d0de4	Merge pull request #149 from bootandy/rewrite Large Rewrite	2021-06-22 13:09:58 +01:00
andy.boot	00c7ce8f15	Large refactor. Use rayon, 10X performance boost Code changes: Removed ignore & channel crates. Using a single reciever thread to build a hashmap to prevend duplicate inodes being reported gave a severe performance penalty Using rayon crate with some hand crafted file traversal has improved performance aprox 10X Behaviour changes: Removed parameter 'limit by filesystem' - don't think this is used, and I only added it as it was easy to add with the ignore crate. Sym links will now not appear in the output tree unless using '-s' 'apparent-size' flag Change behaviour of multiple args so that it unifies them and compares them under one tree instead of treating them individually: https://github.com/bootandy/dust/issues/136	2021-06-22 12:20:48 +01:00
andy.boot	c4a73d5921	Merge pull request #147 from QuarticCat/master Beautify help messages	2021-06-08 10:40:34 +01:00
andy.boot	e1ffc92589	Merge branch 'master' into master	2021-06-08 10:24:31 +01:00
andy.boot	18729762ad	Fix style for new version of clippy	2021-06-08 10:20:23 +01:00
ttay	8a499201de	Updated crossbeam-channel to 0.5 and ran Cargo update	2021-06-08 10:11:11 +01:00
QuarticCat	551c5d3bfa	Simplify conflict implementation	2021-06-05 21:09:31 +08:00
QuarticCat	15a867636f	Add wrap_help feature to clap	2021-06-05 20:39:59 +08:00
andy.boot	1b3d0b2724	Update packages	2021-01-16 15:42:39 +00:00
andy.boot	d5fa7f0861	Increment version	2021-01-16 15:42:39 +00:00
andy.boot	e15cf0c42e	[core] New flag: width Add support for width flag https://github.com/bootandy/dust/issues/126 Requested because some people may cat the output All terminal height/width detection is now in the main file. One method now has too many args for clippy, this complaint is valid and in the future we should consider pulling these out into a separate object.	2021-01-16 15:42:39 +00:00
andy.boot	1891de7fa3	Notes on how to publish	2021-01-16 15:42:39 +00:00