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Bump github.com/mattermost/mattermost-server/v6 from 6.1.0 to 6.3.0 (#1686)
Bumps [github.com/mattermost/mattermost-server/v6](https://github.com/mattermost/mattermost-server) from 6.1.0 to 6.3.0. - [Release notes](https://github.com/mattermost/mattermost-server/releases) - [Changelog](https://github.com/mattermost/mattermost-server/blob/master/CHANGELOG.md) - [Commits](https://github.com/mattermost/mattermost-server/compare/v6.1.0...v6.3.0) --- updated-dependencies: - dependency-name: github.com/mattermost/mattermost-server/v6 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
This commit is contained in:
dependabot[bot]
267
vendor/github.com/klauspost/compress/s2/decode_other.go
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vendored
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267
vendor/github.com/klauspost/compress/s2/decode_other.go
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// Copyright 2016 The Snappy-Go Authors. All rights reserved.
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// Copyright (c) 2019 Klaus Post. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build (!amd64 && !arm64) || appengine || !gc || noasm
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// +build !amd64,!arm64 appengine !gc noasm
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package s2
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import (
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"fmt"
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"strconv"
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)
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// decode writes the decoding of src to dst. It assumes that the varint-encoded
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// length of the decompressed bytes has already been read, and that len(dst)
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// equals that length.
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//
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// It returns 0 on success or a decodeErrCodeXxx error code on failure.
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func s2Decode(dst, src []byte) int {
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const debug = false
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if debug {
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fmt.Println("Starting decode, dst len:", len(dst))
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}
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var d, s, length int
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offset := 0
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// As long as we can read at least 5 bytes...
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for s < len(src)-5 {
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switch src[s] & 0x03 {
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case tagLiteral:
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x := uint32(src[s] >> 2)
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switch {
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case x < 60:
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s++
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case x == 60:
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s += 2
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x = uint32(src[s-1])
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case x == 61:
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s += 3
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x = uint32(src[s-2]) | uint32(src[s-1])<<8
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case x == 62:
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s += 4
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x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16
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case x == 63:
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s += 5
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x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24
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}
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length = int(x) + 1
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if length > len(dst)-d || length > len(src)-s || (strconv.IntSize == 32 && length <= 0) {
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return decodeErrCodeCorrupt
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}
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if debug {
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fmt.Println("literals, length:", length, "d-after:", d+length)
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}
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copy(dst[d:], src[s:s+length])
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d += length
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s += length
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continue
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case tagCopy1:
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s += 2
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length = int(src[s-2]) >> 2 & 0x7
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toffset := int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))
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if toffset == 0 {
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if debug {
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fmt.Print("(repeat) ")
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}
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// keep last offset
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switch length {
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case 5:
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s += 1
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length = int(uint32(src[s-1])) + 4
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case 6:
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s += 2
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length = int(uint32(src[s-2])|(uint32(src[s-1])<<8)) + (1 << 8)
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case 7:
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s += 3
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length = int(uint32(src[s-3])|(uint32(src[s-2])<<8)|(uint32(src[s-1])<<16)) + (1 << 16)
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default: // 0-> 4
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}
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} else {
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offset = toffset
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}
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length += 4
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case tagCopy2:
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s += 3
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length = 1 + int(src[s-3])>>2
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offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8)
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case tagCopy4:
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s += 5
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length = 1 + int(src[s-5])>>2
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offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24)
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}
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if offset <= 0 || d < offset || length > len(dst)-d {
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return decodeErrCodeCorrupt
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}
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if debug {
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fmt.Println("copy, length:", length, "offset:", offset, "d-after:", d+length)
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}
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// Copy from an earlier sub-slice of dst to a later sub-slice.
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// If no overlap, use the built-in copy:
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if offset > length {
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copy(dst[d:d+length], dst[d-offset:])
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d += length
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continue
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}
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// Unlike the built-in copy function, this byte-by-byte copy always runs
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// forwards, even if the slices overlap. Conceptually, this is:
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//
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// d += forwardCopy(dst[d:d+length], dst[d-offset:])
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//
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// We align the slices into a and b and show the compiler they are the same size.
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// This allows the loop to run without bounds checks.
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a := dst[d : d+length]
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b := dst[d-offset:]
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b = b[:len(a)]
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for i := range a {
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a[i] = b[i]
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}
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d += length
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}
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// Remaining with extra checks...
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for s < len(src) {
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switch src[s] & 0x03 {
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case tagLiteral:
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x := uint32(src[s] >> 2)
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switch {
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case x < 60:
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s++
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case x == 60:
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s += 2
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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x = uint32(src[s-1])
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case x == 61:
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s += 3
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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x = uint32(src[s-2]) | uint32(src[s-1])<<8
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case x == 62:
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s += 4
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16
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case x == 63:
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s += 5
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24
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}
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length = int(x) + 1
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if length > len(dst)-d || length > len(src)-s || (strconv.IntSize == 32 && length <= 0) {
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return decodeErrCodeCorrupt
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}
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if debug {
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fmt.Println("literals, length:", length, "d-after:", d+length)
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}
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copy(dst[d:], src[s:s+length])
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d += length
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s += length
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continue
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case tagCopy1:
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s += 2
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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length = int(src[s-2]) >> 2 & 0x7
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toffset := int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))
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if toffset == 0 {
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if debug {
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fmt.Print("(repeat) ")
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}
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// keep last offset
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switch length {
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case 5:
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s += 1
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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length = int(uint32(src[s-1])) + 4
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case 6:
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s += 2
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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length = int(uint32(src[s-2])|(uint32(src[s-1])<<8)) + (1 << 8)
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case 7:
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s += 3
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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length = int(uint32(src[s-3])|(uint32(src[s-2])<<8)|(uint32(src[s-1])<<16)) + (1 << 16)
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default: // 0-> 4
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}
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} else {
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offset = toffset
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}
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length += 4
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case tagCopy2:
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s += 3
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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length = 1 + int(src[s-3])>>2
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offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8)
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case tagCopy4:
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s += 5
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if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
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return decodeErrCodeCorrupt
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}
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length = 1 + int(src[s-5])>>2
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offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24)
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}
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if offset <= 0 || d < offset || length > len(dst)-d {
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return decodeErrCodeCorrupt
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}
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if debug {
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fmt.Println("copy, length:", length, "offset:", offset, "d-after:", d+length)
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}
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// Copy from an earlier sub-slice of dst to a later sub-slice.
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// If no overlap, use the built-in copy:
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if offset > length {
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copy(dst[d:d+length], dst[d-offset:])
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d += length
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continue
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}
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// Unlike the built-in copy function, this byte-by-byte copy always runs
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// forwards, even if the slices overlap. Conceptually, this is:
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//
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// d += forwardCopy(dst[d:d+length], dst[d-offset:])
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//
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// We align the slices into a and b and show the compiler they are the same size.
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// This allows the loop to run without bounds checks.
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a := dst[d : d+length]
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b := dst[d-offset:]
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b = b[:len(a)]
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for i := range a {
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a[i] = b[i]
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}
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d += length
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}
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if d != len(dst) {
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return decodeErrCodeCorrupt
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}
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return 0
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}
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