Files
FastAnime/fastanime/cli/utils/image.py

88 lines
3.0 KiB
Python

# fastanime/cli/utils/image.py
from __future__ import annotations
import logging
import shutil
import subprocess
from typing import Optional
import click
import httpx
logger = logging.getLogger(__name__)
def render(url: str, capture: bool = False, size: str = "30x30") -> Optional[str]:
"""
Renders an image from a URL in the terminal using icat or chafa.
This function automatically detects the best available tool.
Args:
url: The URL of the image to render.
capture: If True, returns the terminal-formatted image as a string
instead of printing it. Defaults to False.
size: The size parameter to pass to the rendering tool (e.g., "WxH").
Returns:
If capture is True, returns the image data as a string.
If capture is False, prints directly to the terminal and returns None.
Returns None on any failure.
"""
# --- Common subprocess arguments ---
subprocess_kwargs = {
"check": False, # We will handle errors manually
"capture_output": capture,
"text": capture, # Decode stdout/stderr as text if capturing
}
# --- Try icat (Kitty terminal) first ---
if icat_executable := shutil.which("icat"):
process = subprocess.run(
[icat_executable, "--align", "left", url], **subprocess_kwargs
)
if process.returncode == 0:
return process.stdout if capture else None
logger.warning(f"icat failed for URL {url} with code {process.returncode}")
# --- Fallback to chafa ---
if chafa_executable := shutil.which("chafa"):
try:
# Chafa requires downloading the image data first
with httpx.Client() as client:
response = client.get(url, follow_redirects=True, timeout=20)
response.raise_for_status()
img_bytes = response.content
# Add stdin input to the subprocess arguments
subprocess_kwargs["input"] = img_bytes
process = subprocess.run(
[chafa_executable, f"--size={size}", "-"], **subprocess_kwargs
)
if process.returncode == 0:
return process.stdout if capture else None
logger.warning(f"chafa failed for URL {url} with code {process.returncode}")
except httpx.HTTPStatusError as e:
logger.error(
f"HTTP error fetching image for chafa: {e.response.status_code}"
)
click.echo(
f"[dim]Error fetching image: {e.response.status_code}[/dim]", err=True
)
except Exception as e:
logger.error(f"An exception occurred while running chafa: {e}")
return None
# --- Final fallback if no tool is found ---
if not capture:
# Only show this message if the user expected to see something.
click.echo(
"[dim](Image preview skipped: icat or chafa not found)[/dim]", err=True
)
return None