986f076276
Add a new generic container registry client via a new `container` package. Use this to create a command line utility as well as a new upload target for container registries. The code uses the github.com/containers/* project and packages to interact with container registires that is also used by skopeo, podman et al. One if the dependencies is `proglottis/gpgme` that is using cgo to bind libgpgme, so we have to add the corresponding devel package to the BuildRequires as well as installing it on CI. Checks will follow later via an integration test.
54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
// Copyright 2018 Klaus Post. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
// Based on work Copyright (c) 2013, Yann Collet, released under BSD License.
|
|
|
|
package huff0
|
|
|
|
// byteReader provides a byte reader that reads
|
|
// little endian values from a byte stream.
|
|
// The input stream is manually advanced.
|
|
// The reader performs no bounds checks.
|
|
type byteReader struct {
|
|
b []byte
|
|
off int
|
|
}
|
|
|
|
// init will initialize the reader and set the input.
|
|
func (b *byteReader) init(in []byte) {
|
|
b.b = in
|
|
b.off = 0
|
|
}
|
|
|
|
// advance the stream b n bytes.
|
|
func (b *byteReader) advance(n uint) {
|
|
b.off += int(n)
|
|
}
|
|
|
|
// Int32 returns a little endian int32 starting at current offset.
|
|
func (b byteReader) Int32() int32 {
|
|
v3 := int32(b.b[b.off+3])
|
|
v2 := int32(b.b[b.off+2])
|
|
v1 := int32(b.b[b.off+1])
|
|
v0 := int32(b.b[b.off])
|
|
return (v3 << 24) | (v2 << 16) | (v1 << 8) | v0
|
|
}
|
|
|
|
// Uint32 returns a little endian uint32 starting at current offset.
|
|
func (b byteReader) Uint32() uint32 {
|
|
v3 := uint32(b.b[b.off+3])
|
|
v2 := uint32(b.b[b.off+2])
|
|
v1 := uint32(b.b[b.off+1])
|
|
v0 := uint32(b.b[b.off])
|
|
return (v3 << 24) | (v2 << 16) | (v1 << 8) | v0
|
|
}
|
|
|
|
// unread returns the unread portion of the input.
|
|
func (b byteReader) unread() []byte {
|
|
return b.b[b.off:]
|
|
}
|
|
|
|
// remain will return the number of bytes remaining.
|
|
func (b byteReader) remain() int {
|
|
return len(b.b) - b.off
|
|
}
|