| package getter |
| |
| import ( |
| "compress/gzip" |
| "fmt" |
| "io" |
| "os" |
| "path/filepath" |
| ) |
| |
| // GzipDecompressor is an implementation of Decompressor that can |
| // decompress gzip files. |
| type GzipDecompressor struct{} |
| |
| func (d *GzipDecompressor) Decompress(dst, src string, dir bool) error { |
| // Directory isn't supported at all |
| if dir { |
| return fmt.Errorf("gzip-compressed files can only unarchive to a single file") |
| } |
| |
| // If we're going into a directory we should make that first |
| if err := os.MkdirAll(filepath.Dir(dst), 0755); err != nil { |
| return err |
| } |
| |
| // File first |
| f, err := os.Open(src) |
| if err != nil { |
| return err |
| } |
| defer f.Close() |
| |
| // gzip compression is second |
| gzipR, err := gzip.NewReader(f) |
| if err != nil { |
| return err |
| } |
| defer gzipR.Close() |
| |
| // Copy it out |
| dstF, err := os.Create(dst) |
| if err != nil { |
| return err |
| } |
| defer dstF.Close() |
| |
| _, err = io.Copy(dstF, gzipR) |
| return err |
| } |