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Merge pull request #5054 from phillipp/dump-compress-zip

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dump: add --compress flag to compress archives
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Michael Eischer 2024-10-16 19:17:47 +00:00 committed by GitHub
commit 618f306f13
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7
changelog/unreleased/pull-5054 Normal file
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@ -0,0 +1,7 @@
Enhancement: Compress ZIP archives created by `dump` command
Restic did not compress the archives that were created by using
the `dump` command. It now saves some disk space when exporting
archives using the DEFLATE algorithm for "zip" archives.
https://github.com/restic/restic/pull/5054

3
internal/dump/zip.go
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@ -39,6 +39,9 @@ func (d *Dumper) dumpNodeZip(ctx context.Context, node *restic.Node, zw *zip.Wri
Modified: node.ModTime,
}
header.SetMode(node.Mode)
if node.Type == restic.NodeTypeFile {
header.Method = zip.Deflate
}
if node.Type == restic.NodeTypeDir {
header.Name += "/"

3
internal/dump/zip_test.go
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@ -101,6 +101,9 @@ func checkZip(t *testing.T, testDir string, srcZip *bytes.Buffer) error {
return fmt.Errorf("symlink target does not match, got %s want %s", string(linkName), target)
}
default:
if f.Method != zip.Deflate {
return fmt.Errorf("expected compression method got %v want %v", f.Method, zip.Deflate)
}
if uint64(match.Size()) != f.UncompressedSize64 {
return fmt.Errorf("size does not match got %v want %v", f.UncompressedSize64, match.Size())
}