forgejo/vendor/github.com/mholt/archiver/v3/filecompressor.go
PhilippHomann 684b7a999f
Dump: add output format tar and output to stdout (#10376)
* Dump: Use mholt/archive/v3 to support tar including many compressions

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: Allow dump output to stdout

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: Fixed bug present since #6677 where SessionConfig.Provider is never "file"

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: never pack RepoRootPath, LFS.ContentPath and LogRootPath when they are below AppDataPath

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: also dump LFS (fixes #10058)

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: never dump CustomPath if CustomPath is a subdir of or equal to AppDataPath (fixes #10365)

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Use log.Info instead of fmt.Fprintf

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* import ordering

* make fmt

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Matti R <matti@mdranta.net>
2020-06-05 16:47:39 -04:00

68 lines
1.4 KiB
Go

package archiver
import (
"fmt"
"os"
)
// FileCompressor can compress and decompress single files.
type FileCompressor struct {
Compressor
Decompressor
// Whether to overwrite existing files when creating files.
OverwriteExisting bool
}
// CompressFile reads the source file and compresses it to destination.
// The destination must have a matching extension.
func (fc FileCompressor) CompressFile(source, destination string) error {
if err := fc.CheckExt(destination); err != nil {
return err
}
if fc.Compressor == nil {
return fmt.Errorf("no compressor specified")
}
if !fc.OverwriteExisting && fileExists(destination) {
return fmt.Errorf("file exists: %s", destination)
}
in, err := os.Open(source)
if err != nil {
return err
}
defer in.Close()
out, err := os.Create(destination)
if err != nil {
return err
}
defer out.Close()
return fc.Compress(in, out)
}
// DecompressFile reads the source file and decompresses it to destination.
func (fc FileCompressor) DecompressFile(source, destination string) error {
if fc.Decompressor == nil {
return fmt.Errorf("no decompressor specified")
}
if !fc.OverwriteExisting && fileExists(destination) {
return fmt.Errorf("file exists: %s", destination)
}
in, err := os.Open(source)
if err != nil {
return err
}
defer in.Close()
out, err := os.Create(destination)
if err != nil {
return err
}
defer out.Close()
return fc.Decompress(in, out)
}