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Simplify render cache to use unique file identity as key

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Kovid Goyal
2024-07-23 17:23:22 +05:30
parent e4433eefc7
commit d73bb83741
1 changed files with 6 additions and 8 deletions
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14
kitty/render_cache.py
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@@ -81,18 +81,16 @@ class ImageRenderCache:
return width, height, os.dup(f.fileno())
def render(self, src_path: str) -> str:
import struct
from hashlib import sha256
src_info = os.stat(src_path)
with self:
output_name = sha256(src_path.encode()).hexdigest()
output_name = sha256(struct.pack('@qqqq', src_info.st_dev, src_info.st_ino, src_info.st_size, src_info.st_mtime_ns)).hexdigest()
output_path = os.path.join(self.cache_dir, output_name)
src_info = os.stat(src_path)
with suppress(OSError), open(output_path, 'rb') as f:
dest_info = os.stat(f.fileno())
if dest_info.st_mtime >= src_info.st_mtime:
self.touch(output_path)
return output_path
with suppress(OSError):
self.touch(output_path)
return output_path
self.render_image(src_path, output_path)
self.prune_entries()
return output_path