tarpatch

package

v0.3.0 Latest Latest Go to latest Published: Mar 17, 2026 License: Apache-2.0 Imports: 9 Imported by: 0

Details

Package tarpatch provides functionality for applying binary patches to tar archives.

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func Apply(delta io.Reader, dataSource DataSource, dst io.Writer) error

Apply applies a binary patch from a delta reader to produce output using the data source.

type DataSource interface {
	io.ReadSeeker
	io.Closer
	SetCurrentFile(file string) error
}

DataSource provides an interface for reading data during patch application.

type FilesystemDataSource struct {
	// contains filtered or unexported fields
}

FilesystemDataSource implements DataSource by reading from filesystem files.

func NewFilesystemDataSource(basePath string) *FilesystemDataSource

NewFilesystemDataSource creates a new FilesystemDataSource with the specified base path.

func (f *FilesystemDataSource) Close() error

Close closes the current file if one is open.

func (f *FilesystemDataSource) Read(data []byte) (n int, err error)

func (f *FilesystemDataSource) Seek(offset int64, whence int) (int64, error)

Seek changes the read position in the current file.

func (f *FilesystemDataSource) SetCurrentFile(file string) error

SetCurrentFile opens the specified file for reading.