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Skip compression of already compressed files #347

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Skip compression of already compressed files #347

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4 changes: 2 additions & 2 deletions src/whitenoise/compress.py
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Original file line number Diff line number Diff line change
Expand Up @@ -82,14 +82,14 @@ def compress(self, path):
stat_result = os.fstat(f.fileno())
data = f.read()
size = len(data)
if self.use_brotli:
if self.use_brotli and not os.path.isfile(f"{path}.br"):
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@Archmonger Archmonger Aug 27, 2024 •
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The file names are only unique when using the CompressedManifestStaticFilesStorage backend.

When using the CompressedStaticFilesStorage backend, this would cause WhiteNoise to never re-compress a file, even if its contents have changed

compressed = self.compress_brotli(data)
if self.is_compressed_effectively("Brotli", path, size, compressed):
yield self.write_data(path, compressed, ".br", stat_result)
else:
# If Brotli compression wasn't effective gzip won't be either
return
if self.use_gzip:
if self.use_gzip and not os.path.isfile(f"{path}.gz"):
compressed = self.compress_gzip(data)
if self.is_compressed_effectively("Gzip", path, size, compressed):
yield self.write_data(path, compressed, ".gz", stat_result)
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