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* Add lzip support * Make the extension comparison to strict
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package archiver | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "io" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| "github.com/sorairolake/lzip-go" | ||
| ) | ||
|
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| func init() { | ||
| RegisterFormat(Lzip{}) | ||
| } | ||
|
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| // Lzip facilitates lzip compression. | ||
| type Lzip struct{} | ||
|
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| func (Lzip) Name() string { return ".lz" } | ||
|
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| func (lz Lzip) Match(filename string, stream io.Reader) (MatchResult, error) { | ||
| var mr MatchResult | ||
|
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| // match filename | ||
| if filepath.Ext(strings.ToLower(filename)) == lz.Name() { | ||
| mr.ByName = true | ||
| } | ||
|
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| // match file header | ||
| buf, err := readAtMost(stream, len(lzipHeader)) | ||
| if err != nil { | ||
| return mr, err | ||
| } | ||
| mr.ByStream = bytes.Equal(buf, lzipHeader) | ||
|
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| return mr, nil | ||
| } | ||
|
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| func (Lzip) OpenWriter(w io.Writer) (io.WriteCloser, error) { | ||
| return lzip.NewWriter(w), nil | ||
| } | ||
|
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| func (Lzip) OpenReader(r io.Reader) (io.ReadCloser, error) { | ||
| lzr, err := lzip.NewReader(r) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return io.NopCloser(lzr), err | ||
| } | ||
|
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| // magic number at the beginning of lzip files | ||
| // https://datatracker.ietf.org/doc/html/draft-diaz-lzip-09#section-2 | ||
| var lzipHeader = []byte("LZIP") |