mirror of
https://github.com/mudler/luet.git
synced 2025-07-13 07:04:19 +00:00
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>
128 lines
2.3 KiB
Go
128 lines
2.3 KiB
Go
// Copyright 2019+ Klaus Post. All rights reserved.
|
|
// License information can be found in the LICENSE file.
|
|
// Based on work by Yann Collet, released under BSD License.
|
|
|
|
package zstd
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
)
|
|
|
|
type byteBuffer interface {
|
|
// Read up to 8 bytes.
|
|
// Returns nil if no more input is available.
|
|
readSmall(n int) []byte
|
|
|
|
// Read >8 bytes.
|
|
// MAY use the destination slice.
|
|
readBig(n int, dst []byte) ([]byte, error)
|
|
|
|
// Read a single byte.
|
|
readByte() (byte, error)
|
|
|
|
// Skip n bytes.
|
|
skipN(n int) error
|
|
}
|
|
|
|
// in-memory buffer
|
|
type byteBuf []byte
|
|
|
|
func (b *byteBuf) readSmall(n int) []byte {
|
|
if debugAsserts && n > 8 {
|
|
panic(fmt.Errorf("small read > 8 (%d). use readBig", n))
|
|
}
|
|
bb := *b
|
|
if len(bb) < n {
|
|
return nil
|
|
}
|
|
r := bb[:n]
|
|
*b = bb[n:]
|
|
return r
|
|
}
|
|
|
|
func (b *byteBuf) readBig(n int, dst []byte) ([]byte, error) {
|
|
bb := *b
|
|
if len(bb) < n {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
r := bb[:n]
|
|
*b = bb[n:]
|
|
return r, nil
|
|
}
|
|
|
|
func (b *byteBuf) remain() []byte {
|
|
return *b
|
|
}
|
|
|
|
func (b *byteBuf) readByte() (byte, error) {
|
|
bb := *b
|
|
if len(bb) < 1 {
|
|
return 0, nil
|
|
}
|
|
r := bb[0]
|
|
*b = bb[1:]
|
|
return r, nil
|
|
}
|
|
|
|
func (b *byteBuf) skipN(n int) error {
|
|
bb := *b
|
|
if len(bb) < n {
|
|
return io.ErrUnexpectedEOF
|
|
}
|
|
*b = bb[n:]
|
|
return nil
|
|
}
|
|
|
|
// wrapper around a reader.
|
|
type readerWrapper struct {
|
|
r io.Reader
|
|
tmp [8]byte
|
|
}
|
|
|
|
func (r *readerWrapper) readSmall(n int) []byte {
|
|
if debugAsserts && n > 8 {
|
|
panic(fmt.Errorf("small read > 8 (%d). use readBig", n))
|
|
}
|
|
n2, err := io.ReadFull(r.r, r.tmp[:n])
|
|
// We only really care about the actual bytes read.
|
|
if n2 != n {
|
|
if debug {
|
|
println("readSmall: got", n2, "want", n, "err", err)
|
|
}
|
|
return nil
|
|
}
|
|
return r.tmp[:n]
|
|
}
|
|
|
|
func (r *readerWrapper) readBig(n int, dst []byte) ([]byte, error) {
|
|
if cap(dst) < n {
|
|
dst = make([]byte, n)
|
|
}
|
|
n2, err := io.ReadFull(r.r, dst[:n])
|
|
if err == io.EOF && n > 0 {
|
|
err = io.ErrUnexpectedEOF
|
|
}
|
|
return dst[:n2], err
|
|
}
|
|
|
|
func (r *readerWrapper) readByte() (byte, error) {
|
|
n2, err := r.r.Read(r.tmp[:1])
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
if n2 != 1 {
|
|
return 0, io.ErrUnexpectedEOF
|
|
}
|
|
return r.tmp[0], nil
|
|
}
|
|
|
|
func (r *readerWrapper) skipN(n int) error {
|
|
n2, err := io.CopyN(ioutil.Discard, r.r, int64(n))
|
|
if n2 != int64(n) {
|
|
err = io.ErrUnexpectedEOF
|
|
}
|
|
return err
|
|
}
|