Платформа ЦРНП "Мирокод" для разработки проектов
https://git.mirocod.ru
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58 lines
1.2 KiB
58 lines
1.2 KiB
package archiver |
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import ( |
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"fmt" |
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"io" |
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"path/filepath" |
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"github.com/ulikunitz/xz" |
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fastxz "github.com/xi2/xz" |
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) |
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// Xz facilitates XZ compression. |
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type Xz struct{} |
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// Compress reads in, compresses it, and writes it to out. |
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func (x *Xz) Compress(in io.Reader, out io.Writer) error { |
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w, err := xz.NewWriter(out) |
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if err != nil { |
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return err |
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} |
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defer w.Close() |
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_, err = io.Copy(w, in) |
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return err |
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} |
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// Decompress reads in, decompresses it, and writes it to out. |
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func (x *Xz) Decompress(in io.Reader, out io.Writer) error { |
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r, err := fastxz.NewReader(in, 0) |
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if err != nil { |
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return err |
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} |
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_, err = io.Copy(out, r) |
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return err |
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} |
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// CheckExt ensures the file extension matches the format. |
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func (x *Xz) CheckExt(filename string) error { |
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if filepath.Ext(filename) != ".xz" { |
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return fmt.Errorf("filename must have a .xz extension") |
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} |
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return nil |
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} |
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func (x *Xz) String() string { return "xz" } |
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// NewXz returns a new, default instance ready to be customized and used. |
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func NewXz() *Xz { |
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return new(Xz) |
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} |
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// Compile-time checks to ensure type implements desired interfaces. |
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var ( |
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_ = Compressor(new(Xz)) |
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_ = Decompressor(new(Xz)) |
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) |
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// DefaultXz is a default instance that is conveniently ready to use. |
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var DefaultXz = NewXz()
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