mirror of
https://github.com/mudler/luet.git
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4adc0dc9b9
Instead of using gox on one side and an action to release, we can merge them together with goreleaser which will build for extra targets (arm, mips if needed in the future) and it also takes care of creating checksums, a source archive, and a changelog and creating a release with all the artifacts. All binaries should respect the old naming convention, so any scripts out there should still work. Signed-off-by: Itxaka <igarcia@suse.com>
121 lines
2.7 KiB
Go
121 lines
2.7 KiB
Go
// Copyright 2019+ Klaus Post. All rights reserved.
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// License information can be found in the LICENSE file.
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package zstd
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import (
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"errors"
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"io"
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"sync"
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)
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// ZipMethodWinZip is the method for Zstandard compressed data inside Zip files for WinZip.
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// See https://www.winzip.com/win/en/comp_info.html
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const ZipMethodWinZip = 93
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// ZipMethodPKWare is the method number used by PKWARE to indicate Zstandard compression.
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// See https://pkware.cachefly.net/webdocs/APPNOTE/APPNOTE-6.3.7.TXT
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const ZipMethodPKWare = 20
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var zipReaderPool sync.Pool
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// newZipReader cannot be used since we would leak goroutines...
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func newZipReader(r io.Reader) io.ReadCloser {
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dec, ok := zipReaderPool.Get().(*Decoder)
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if ok {
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dec.Reset(r)
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} else {
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d, err := NewReader(r, WithDecoderConcurrency(1), WithDecoderLowmem(true))
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if err != nil {
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panic(err)
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}
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dec = d
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}
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return &pooledZipReader{dec: dec}
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}
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type pooledZipReader struct {
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mu sync.Mutex // guards Close and Read
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dec *Decoder
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}
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func (r *pooledZipReader) Read(p []byte) (n int, err error) {
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r.mu.Lock()
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defer r.mu.Unlock()
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if r.dec == nil {
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return 0, errors.New("Read after Close")
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}
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dec, err := r.dec.Read(p)
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return dec, err
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}
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func (r *pooledZipReader) Close() error {
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r.mu.Lock()
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defer r.mu.Unlock()
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var err error
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if r.dec != nil {
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err = r.dec.Reset(nil)
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zipReaderPool.Put(r.dec)
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r.dec = nil
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}
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return err
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}
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type pooledZipWriter struct {
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mu sync.Mutex // guards Close and Read
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enc *Encoder
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}
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func (w *pooledZipWriter) Write(p []byte) (n int, err error) {
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w.mu.Lock()
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defer w.mu.Unlock()
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if w.enc == nil {
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return 0, errors.New("Write after Close")
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}
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return w.enc.Write(p)
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}
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func (w *pooledZipWriter) Close() error {
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w.mu.Lock()
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defer w.mu.Unlock()
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var err error
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if w.enc != nil {
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err = w.enc.Close()
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zipReaderPool.Put(w.enc)
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w.enc = nil
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}
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return err
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}
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// ZipCompressor returns a compressor that can be registered with zip libraries.
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// The provided encoder options will be used on all encodes.
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func ZipCompressor(opts ...EOption) func(w io.Writer) (io.WriteCloser, error) {
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var pool sync.Pool
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return func(w io.Writer) (io.WriteCloser, error) {
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enc, ok := pool.Get().(*Encoder)
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if ok {
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enc.Reset(w)
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} else {
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var err error
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enc, err = NewWriter(w, opts...)
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if err != nil {
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return nil, err
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}
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}
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return &pooledZipWriter{enc: enc}, nil
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}
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}
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// ZipDecompressor returns a decompressor that can be registered with zip libraries.
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// See ZipCompressor for example.
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func ZipDecompressor() func(r io.Reader) io.ReadCloser {
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return func(r io.Reader) io.ReadCloser {
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d, err := NewReader(r, WithDecoderConcurrency(1), WithDecoderLowmem(true))
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if err != nil {
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panic(err)
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}
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return d.IOReadCloser()
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}
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}
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