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update user agent update deps fix latent bug (leftover files)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package util | ||
|
|
||
| import ( | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| "github.com/klauspost/compress/zstd" | ||
|
|
||
| "github.com/lbryio/lbry.go/v2/extras/errors" | ||
| ) | ||
|
|
||
| // ZstdCompressFiles individually compresses each file in the filePaths slice and saves them as .zst files. | ||
| func ZstdCompressFiles(filePaths []string) error { | ||
| for _, filePath := range filePaths { | ||
| zstdFilePath := filePath + ".zst" | ||
| err := compressFile(filePath, zstdFilePath) | ||
| if err != nil { | ||
| return errors.Err("Could not compress file '%s', got error '%s'", filePath, err.Error()) | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // compressFile creates a zstd compressed version of the specified file. | ||
| func compressFile(sourcePath, destinationPath string) error { | ||
| inputFile, err := os.Open(sourcePath) | ||
| if err != nil { | ||
| return errors.Err("Could not open source file '%s', got error '%s'", sourcePath, err.Error()) | ||
| } | ||
| defer inputFile.Close() | ||
|
|
||
| outputFile, err := os.Create(destinationPath) | ||
| if err != nil { | ||
| return errors.Err("Could not create destination file '%s', got error '%s'", destinationPath, err.Error()) | ||
| } | ||
| defer outputFile.Close() | ||
|
|
||
| encoder, err := zstd.NewWriter(outputFile) | ||
| if err != nil { | ||
| return errors.Err("Could not create zstd encoder, got error '%s'", err.Error()) | ||
| } | ||
| defer encoder.Close() | ||
|
|
||
| _, err = io.Copy(encoder, inputFile) | ||
| if err != nil { | ||
| return errors.Err("Could not compress the file '%s', got error '%s'", sourcePath, err.Error()) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // Unzstd decompresses a zstd file to a target directory. | ||
| func Unzstd(zstdFilePath, target string) error { | ||
| file, err := os.Open(zstdFilePath) | ||
| if err != nil { | ||
| return errors.Err("Could not open zstd file '%s', got error '%s'", zstdFilePath, err.Error()) | ||
| } | ||
| defer file.Close() | ||
|
|
||
| decoder, err := zstd.NewReader(file) | ||
| if err != nil { | ||
| return errors.Err("Could not create zstd decoder, got error '%s'", err.Error()) | ||
| } | ||
| defer decoder.Close() | ||
|
|
||
| originalFileName := strings.TrimSuffix(filepath.Base(zstdFilePath), ".zst") | ||
| err = os.MkdirAll(target, 0755) | ||
| if err != nil { | ||
| return errors.Err("Could not create target directory '%s', got error '%s'", target, err.Error()) | ||
| } | ||
| extractedFile, err := os.Create(filepath.Join(target, originalFileName)) | ||
| if err != nil { | ||
| return errors.Err("Could not create file for extraction '%s', got error '%s'", filepath.Join(target, originalFileName), err.Error()) | ||
| } | ||
| defer extractedFile.Close() | ||
|
|
||
| _, err = io.Copy(extractedFile, decoder) | ||
| if err != nil { | ||
| return errors.Err("Could not extract the zstd content, got error '%s'", err.Error()) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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