forked from forgejo/forgejo
Dump: add output format tar and output to stdout (#10376)
* Dump: Use mholt/archive/v3 to support tar including many compressions Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: Allow dump output to stdout Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: Fixed bug present since #6677 where SessionConfig.Provider is never "file" Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: never pack RepoRootPath, LFS.ContentPath and LogRootPath when they are below AppDataPath Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: also dump LFS (fixes #10058) Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: never dump CustomPath if CustomPath is a subdir of or equal to AppDataPath (fixes #10365) Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Use log.Info instead of fmt.Fprintf Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * import ordering * make fmt Co-authored-by: zeripath <art27@cantab.net> Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: Matti R <matti@mdranta.net>
This commit is contained in:
PhilippHomann
GitHub
parent
209b17c4e2
commit
684b7a999f
303 changed files with 301317 additions and 1183 deletions
729
vendor/github.com/klauspost/compress/zstd/enc_dfast.go
generated
vendored
Normal file
729
vendor/github.com/klauspost/compress/zstd/enc_dfast.go
generated
vendored
Normal file
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@ -0,0 +1,729 @@
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// Copyright 2019+ Klaus Post. All rights reserved.
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// License information can be found in the LICENSE file.
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// Based on work by Yann Collet, released under BSD License.
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package zstd
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import "fmt"
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const (
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dFastLongTableBits = 17 // Bits used in the long match table
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dFastLongTableSize = 1 << dFastLongTableBits // Size of the table
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dFastLongTableMask = dFastLongTableSize - 1 // Mask for table indices. Redundant, but can eliminate bounds checks.
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dFastShortTableBits = tableBits // Bits used in the short match table
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dFastShortTableSize = 1 << dFastShortTableBits // Size of the table
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dFastShortTableMask = dFastShortTableSize - 1 // Mask for table indices. Redundant, but can eliminate bounds checks.
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)
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type doubleFastEncoder struct {
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fastEncoder
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longTable [dFastLongTableSize]tableEntry
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}
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// Encode mimmics functionality in zstd_dfast.c
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func (e *doubleFastEncoder) Encode(blk *blockEnc, src []byte) {
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const (
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// Input margin is the number of bytes we read (8)
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// and the maximum we will read ahead (2)
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inputMargin = 8 + 2
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minNonLiteralBlockSize = 16
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)
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// Protect against e.cur wraparound.
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for e.cur >= bufferReset {
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if len(e.hist) == 0 {
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for i := range e.table[:] {
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e.table[i] = tableEntry{}
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}
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for i := range e.longTable[:] {
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e.longTable[i] = tableEntry{}
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}
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e.cur = e.maxMatchOff
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break
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}
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// Shift down everything in the table that isn't already too far away.
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minOff := e.cur + int32(len(e.hist)) - e.maxMatchOff
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for i := range e.table[:] {
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v := e.table[i].offset
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if v < minOff {
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v = 0
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} else {
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v = v - e.cur + e.maxMatchOff
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}
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e.table[i].offset = v
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}
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for i := range e.longTable[:] {
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v := e.longTable[i].offset
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if v < minOff {
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v = 0
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} else {
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v = v - e.cur + e.maxMatchOff
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}
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e.longTable[i].offset = v
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}
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e.cur = e.maxMatchOff
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break
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}
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s := e.addBlock(src)
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blk.size = len(src)
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if len(src) < minNonLiteralBlockSize {
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blk.extraLits = len(src)
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blk.literals = blk.literals[:len(src)]
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copy(blk.literals, src)
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return
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}
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// Override src
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src = e.hist
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sLimit := int32(len(src)) - inputMargin
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// stepSize is the number of bytes to skip on every main loop iteration.
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// It should be >= 1.
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stepSize := int32(e.o.targetLength)
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if stepSize == 0 {
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stepSize++
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}
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const kSearchStrength = 8
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// nextEmit is where in src the next emitLiteral should start from.
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nextEmit := s
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cv := load6432(src, s)
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// Relative offsets
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offset1 := int32(blk.recentOffsets[0])
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offset2 := int32(blk.recentOffsets[1])
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addLiterals := func(s *seq, until int32) {
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if until == nextEmit {
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return
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}
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blk.literals = append(blk.literals, src[nextEmit:until]...)
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s.litLen = uint32(until - nextEmit)
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}
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if debug {
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println("recent offsets:", blk.recentOffsets)
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}
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encodeLoop:
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for {
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var t int32
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// We allow the encoder to optionally turn off repeat offsets across blocks
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canRepeat := len(blk.sequences) > 2
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for {
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if debugAsserts && canRepeat && offset1 == 0 {
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panic("offset0 was 0")
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}
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nextHashS := hash5(cv, dFastShortTableBits)
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nextHashL := hash8(cv, dFastLongTableBits)
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candidateL := e.longTable[nextHashL]
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candidateS := e.table[nextHashS]
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const repOff = 1
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repIndex := s - offset1 + repOff
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entry := tableEntry{offset: s + e.cur, val: uint32(cv)}
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e.longTable[nextHashL] = entry
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e.table[nextHashS] = entry
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if canRepeat {
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if repIndex >= 0 && load3232(src, repIndex) == uint32(cv>>(repOff*8)) {
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// Consider history as well.
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var seq seq
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lenght := 4 + e.matchlen(s+4+repOff, repIndex+4, src)
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seq.matchLen = uint32(lenght - zstdMinMatch)
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// We might be able to match backwards.
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// Extend as long as we can.
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start := s + repOff
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// We end the search early, so we don't risk 0 literals
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// and have to do special offset treatment.
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startLimit := nextEmit + 1
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tMin := s - e.maxMatchOff
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if tMin < 0 {
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tMin = 0
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}
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for repIndex > tMin && start > startLimit && src[repIndex-1] == src[start-1] && seq.matchLen < maxMatchLength-zstdMinMatch-1 {
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repIndex--
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start--
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seq.matchLen++
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}
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addLiterals(&seq, start)
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// rep 0
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seq.offset = 1
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if debugSequences {
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println("repeat sequence", seq, "next s:", s)
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}
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blk.sequences = append(blk.sequences, seq)
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s += lenght + repOff
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nextEmit = s
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if s >= sLimit {
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if debug {
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println("repeat ended", s, lenght)
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}
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break encodeLoop
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}
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cv = load6432(src, s)
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continue
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}
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const repOff2 = 1
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// We deviate from the reference encoder and also check offset 2.
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// Slower and not consistently better, so disabled.
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// repIndex = s - offset2 + repOff2
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if false && repIndex >= 0 && load3232(src, repIndex) == uint32(cv>>(repOff2*8)) {
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// Consider history as well.
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var seq seq
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lenght := 4 + e.matchlen(s+4+repOff2, repIndex+4, src)
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seq.matchLen = uint32(lenght - zstdMinMatch)
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// We might be able to match backwards.
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// Extend as long as we can.
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start := s + repOff2
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// We end the search early, so we don't risk 0 literals
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// and have to do special offset treatment.
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startLimit := nextEmit + 1
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tMin := s - e.maxMatchOff
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if tMin < 0 {
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tMin = 0
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}
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for repIndex > tMin && start > startLimit && src[repIndex-1] == src[start-1] && seq.matchLen < maxMatchLength-zstdMinMatch-1 {
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repIndex--
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start--
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seq.matchLen++
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}
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addLiterals(&seq, start)
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// rep 2
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seq.offset = 2
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if debugSequences {
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println("repeat sequence 2", seq, "next s:", s)
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}
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blk.sequences = append(blk.sequences, seq)
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s += lenght + repOff2
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nextEmit = s
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if s >= sLimit {
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if debug {
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println("repeat ended", s, lenght)
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}
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break encodeLoop
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}
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cv = load6432(src, s)
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// Swap offsets
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offset1, offset2 = offset2, offset1
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continue
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}
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}
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// Find the offsets of our two matches.
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coffsetL := s - (candidateL.offset - e.cur)
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coffsetS := s - (candidateS.offset - e.cur)
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// Check if we have a long match.
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if coffsetL < e.maxMatchOff && uint32(cv) == candidateL.val {
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// Found a long match, likely at least 8 bytes.
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// Reference encoder checks all 8 bytes, we only check 4,
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// but the likelihood of both the first 4 bytes and the hash matching should be enough.
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t = candidateL.offset - e.cur
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if debugAsserts && s <= t {
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panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
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}
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if debugAsserts && s-t > e.maxMatchOff {
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panic("s - t >e.maxMatchOff")
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}
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if debugMatches {
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println("long match")
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}
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break
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}
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// Check if we have a short match.
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if coffsetS < e.maxMatchOff && uint32(cv) == candidateS.val {
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// found a regular match
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// See if we can find a long match at s+1
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const checkAt = 1
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cv := load6432(src, s+checkAt)
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nextHashL = hash8(cv, dFastLongTableBits)
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candidateL = e.longTable[nextHashL]
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coffsetL = s - (candidateL.offset - e.cur) + checkAt
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// We can store it, since we have at least a 4 byte match.
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e.longTable[nextHashL] = tableEntry{offset: s + checkAt + e.cur, val: uint32(cv)}
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if coffsetL < e.maxMatchOff && uint32(cv) == candidateL.val {
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// Found a long match, likely at least 8 bytes.
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// Reference encoder checks all 8 bytes, we only check 4,
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// but the likelihood of both the first 4 bytes and the hash matching should be enough.
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t = candidateL.offset - e.cur
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s += checkAt
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if debugMatches {
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println("long match (after short)")
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}
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break
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}
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t = candidateS.offset - e.cur
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if debugAsserts && s <= t {
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panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
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}
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if debugAsserts && s-t > e.maxMatchOff {
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panic("s - t >e.maxMatchOff")
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}
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if debugAsserts && t < 0 {
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panic("t<0")
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}
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if debugMatches {
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println("short match")
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}
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break
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}
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// No match found, move forward in input.
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s += stepSize + ((s - nextEmit) >> (kSearchStrength - 1))
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if s >= sLimit {
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break encodeLoop
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}
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cv = load6432(src, s)
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}
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// A 4-byte match has been found. Update recent offsets.
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// We'll later see if more than 4 bytes.
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offset2 = offset1
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offset1 = s - t
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if debugAsserts && s <= t {
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panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
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}
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if debugAsserts && canRepeat && int(offset1) > len(src) {
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panic("invalid offset")
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}
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// Extend the 4-byte match as long as possible.
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l := e.matchlen(s+4, t+4, src) + 4
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// Extend backwards
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tMin := s - e.maxMatchOff
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if tMin < 0 {
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tMin = 0
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}
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for t > tMin && s > nextEmit && src[t-1] == src[s-1] && l < maxMatchLength {
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s--
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t--
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l++
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}
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// Write our sequence
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var seq seq
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seq.litLen = uint32(s - nextEmit)
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seq.matchLen = uint32(l - zstdMinMatch)
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if seq.litLen > 0 {
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blk.literals = append(blk.literals, src[nextEmit:s]...)
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}
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seq.offset = uint32(s-t) + 3
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s += l
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if debugSequences {
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println("sequence", seq, "next s:", s)
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}
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blk.sequences = append(blk.sequences, seq)
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nextEmit = s
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if s >= sLimit {
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break encodeLoop
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}
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// Index match start+1 (long) and start+2 (short)
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index0 := s - l + 1
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// Index match end-2 (long) and end-1 (short)
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index1 := s - 2
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cv0 := load6432(src, index0)
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cv1 := load6432(src, index1)
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te0 := tableEntry{offset: index0 + e.cur, val: uint32(cv0)}
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te1 := tableEntry{offset: index1 + e.cur, val: uint32(cv1)}
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e.longTable[hash8(cv0, dFastLongTableBits)] = te0
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e.longTable[hash8(cv1, dFastLongTableBits)] = te1
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cv0 >>= 8
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cv1 >>= 8
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te0.offset++
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te1.offset++
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te0.val = uint32(cv0)
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te1.val = uint32(cv1)
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e.table[hash5(cv0, dFastShortTableBits)] = te0
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e.table[hash5(cv1, dFastShortTableBits)] = te1
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cv = load6432(src, s)
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if !canRepeat {
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continue
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}
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// Check offset 2
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for {
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o2 := s - offset2
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if load3232(src, o2) != uint32(cv) {
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// Do regular search
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break
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}
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// Store this, since we have it.
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nextHashS := hash5(cv1>>8, dFastShortTableBits)
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nextHashL := hash8(cv, dFastLongTableBits)
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// We have at least 4 byte match.
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// No need to check backwards. We come straight from a match
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l := 4 + e.matchlen(s+4, o2+4, src)
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entry := tableEntry{offset: s + e.cur, val: uint32(cv)}
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e.longTable[nextHashL] = entry
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e.table[nextHashS] = entry
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seq.matchLen = uint32(l) - zstdMinMatch
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seq.litLen = 0
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// Since litlen is always 0, this is offset 1.
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seq.offset = 1
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s += l
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nextEmit = s
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if debugSequences {
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println("sequence", seq, "next s:", s)
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}
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blk.sequences = append(blk.sequences, seq)
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// Swap offset 1 and 2.
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offset1, offset2 = offset2, offset1
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if s >= sLimit {
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// Finished
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break encodeLoop
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}
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cv = load6432(src, s)
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}
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}
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if int(nextEmit) < len(src) {
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blk.literals = append(blk.literals, src[nextEmit:]...)
|
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blk.extraLits = len(src) - int(nextEmit)
|
||||
}
|
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blk.recentOffsets[0] = uint32(offset1)
|
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blk.recentOffsets[1] = uint32(offset2)
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if debug {
|
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println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
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}
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}
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// EncodeNoHist will encode a block with no history and no following blocks.
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// Most notable difference is that src will not be copied for history and
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// we do not need to check for max match length.
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func (e *doubleFastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
|
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const (
|
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// Input margin is the number of bytes we read (8)
|
||||
// and the maximum we will read ahead (2)
|
||||
inputMargin = 8 + 2
|
||||
minNonLiteralBlockSize = 16
|
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)
|
||||
|
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// Protect against e.cur wraparound.
|
||||
if e.cur >= bufferReset {
|
||||
for i := range e.table[:] {
|
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e.table[i] = tableEntry{}
|
||||
}
|
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for i := range e.longTable[:] {
|
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e.longTable[i] = tableEntry{}
|
||||
}
|
||||
e.cur = e.maxMatchOff
|
||||
}
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||||
|
||||
s := int32(0)
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||||
blk.size = len(src)
|
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if len(src) < minNonLiteralBlockSize {
|
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blk.extraLits = len(src)
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||||
blk.literals = blk.literals[:len(src)]
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copy(blk.literals, src)
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return
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}
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||||
|
||||
// Override src
|
||||
sLimit := int32(len(src)) - inputMargin
|
||||
// stepSize is the number of bytes to skip on every main loop iteration.
|
||||
// It should be >= 1.
|
||||
stepSize := int32(e.o.targetLength)
|
||||
if stepSize == 0 {
|
||||
stepSize++
|
||||
}
|
||||
|
||||
const kSearchStrength = 8
|
||||
|
||||
// nextEmit is where in src the next emitLiteral should start from.
|
||||
nextEmit := s
|
||||
cv := load6432(src, s)
|
||||
|
||||
// Relative offsets
|
||||
offset1 := int32(blk.recentOffsets[0])
|
||||
offset2 := int32(blk.recentOffsets[1])
|
||||
|
||||
addLiterals := func(s *seq, until int32) {
|
||||
if until == nextEmit {
|
||||
return
|
||||
}
|
||||
blk.literals = append(blk.literals, src[nextEmit:until]...)
|
||||
s.litLen = uint32(until - nextEmit)
|
||||
}
|
||||
if debug {
|
||||
println("recent offsets:", blk.recentOffsets)
|
||||
}
|
||||
|
||||
encodeLoop:
|
||||
for {
|
||||
var t int32
|
||||
for {
|
||||
|
||||
nextHashS := hash5(cv, dFastShortTableBits)
|
||||
nextHashL := hash8(cv, dFastLongTableBits)
|
||||
candidateL := e.longTable[nextHashL]
|
||||
candidateS := e.table[nextHashS]
|
||||
|
||||
const repOff = 1
|
||||
repIndex := s - offset1 + repOff
|
||||
entry := tableEntry{offset: s + e.cur, val: uint32(cv)}
|
||||
e.longTable[nextHashL] = entry
|
||||
e.table[nextHashS] = entry
|
||||
|
||||
if len(blk.sequences) > 2 {
|
||||
if load3232(src, repIndex) == uint32(cv>>(repOff*8)) {
|
||||
// Consider history as well.
|
||||
var seq seq
|
||||
//length := 4 + e.matchlen(s+4+repOff, repIndex+4, src)
|
||||
length := 4 + int32(matchLen(src[s+4+repOff:], src[repIndex+4:]))
|
||||
|
||||
seq.matchLen = uint32(length - zstdMinMatch)
|
||||
|
||||
// We might be able to match backwards.
|
||||
// Extend as long as we can.
|
||||
start := s + repOff
|
||||
// We end the search early, so we don't risk 0 literals
|
||||
// and have to do special offset treatment.
|
||||
startLimit := nextEmit + 1
|
||||
|
||||
tMin := s - e.maxMatchOff
|
||||
if tMin < 0 {
|
||||
tMin = 0
|
||||
}
|
||||
for repIndex > tMin && start > startLimit && src[repIndex-1] == src[start-1] {
|
||||
repIndex--
|
||||
start--
|
||||
seq.matchLen++
|
||||
}
|
||||
addLiterals(&seq, start)
|
||||
|
||||
// rep 0
|
||||
seq.offset = 1
|
||||
if debugSequences {
|
||||
println("repeat sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
s += length + repOff
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
if debug {
|
||||
println("repeat ended", s, length)
|
||||
|
||||
}
|
||||
break encodeLoop
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
continue
|
||||
}
|
||||
}
|
||||
// Find the offsets of our two matches.
|
||||
coffsetL := s - (candidateL.offset - e.cur)
|
||||
coffsetS := s - (candidateS.offset - e.cur)
|
||||
|
||||
// Check if we have a long match.
|
||||
if coffsetL < e.maxMatchOff && uint32(cv) == candidateL.val {
|
||||
// Found a long match, likely at least 8 bytes.
|
||||
// Reference encoder checks all 8 bytes, we only check 4,
|
||||
// but the likelihood of both the first 4 bytes and the hash matching should be enough.
|
||||
t = candidateL.offset - e.cur
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
if debugAsserts && s-t > e.maxMatchOff {
|
||||
panic("s - t >e.maxMatchOff")
|
||||
}
|
||||
if debugMatches {
|
||||
println("long match")
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
// Check if we have a short match.
|
||||
if coffsetS < e.maxMatchOff && uint32(cv) == candidateS.val {
|
||||
// found a regular match
|
||||
// See if we can find a long match at s+1
|
||||
const checkAt = 1
|
||||
cv := load6432(src, s+checkAt)
|
||||
nextHashL = hash8(cv, dFastLongTableBits)
|
||||
candidateL = e.longTable[nextHashL]
|
||||
coffsetL = s - (candidateL.offset - e.cur) + checkAt
|
||||
|
||||
// We can store it, since we have at least a 4 byte match.
|
||||
e.longTable[nextHashL] = tableEntry{offset: s + checkAt + e.cur, val: uint32(cv)}
|
||||
if coffsetL < e.maxMatchOff && uint32(cv) == candidateL.val {
|
||||
// Found a long match, likely at least 8 bytes.
|
||||
// Reference encoder checks all 8 bytes, we only check 4,
|
||||
// but the likelihood of both the first 4 bytes and the hash matching should be enough.
|
||||
t = candidateL.offset - e.cur
|
||||
s += checkAt
|
||||
if debugMatches {
|
||||
println("long match (after short)")
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
t = candidateS.offset - e.cur
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
if debugAsserts && s-t > e.maxMatchOff {
|
||||
panic("s - t >e.maxMatchOff")
|
||||
}
|
||||
if debugAsserts && t < 0 {
|
||||
panic("t<0")
|
||||
}
|
||||
if debugMatches {
|
||||
println("short match")
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
// No match found, move forward in input.
|
||||
s += stepSize + ((s - nextEmit) >> (kSearchStrength - 1))
|
||||
if s >= sLimit {
|
||||
break encodeLoop
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
}
|
||||
|
||||
// A 4-byte match has been found. Update recent offsets.
|
||||
// We'll later see if more than 4 bytes.
|
||||
offset2 = offset1
|
||||
offset1 = s - t
|
||||
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
|
||||
// Extend the 4-byte match as long as possible.
|
||||
//l := e.matchlen(s+4, t+4, src) + 4
|
||||
l := int32(matchLen(src[s+4:], src[t+4:])) + 4
|
||||
|
||||
// Extend backwards
|
||||
tMin := s - e.maxMatchOff
|
||||
if tMin < 0 {
|
||||
tMin = 0
|
||||
}
|
||||
for t > tMin && s > nextEmit && src[t-1] == src[s-1] {
|
||||
s--
|
||||
t--
|
||||
l++
|
||||
}
|
||||
|
||||
// Write our sequence
|
||||
var seq seq
|
||||
seq.litLen = uint32(s - nextEmit)
|
||||
seq.matchLen = uint32(l - zstdMinMatch)
|
||||
if seq.litLen > 0 {
|
||||
blk.literals = append(blk.literals, src[nextEmit:s]...)
|
||||
}
|
||||
seq.offset = uint32(s-t) + 3
|
||||
s += l
|
||||
if debugSequences {
|
||||
println("sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
break encodeLoop
|
||||
}
|
||||
|
||||
// Index match start+1 (long) and start+2 (short)
|
||||
index0 := s - l + 1
|
||||
// Index match end-2 (long) and end-1 (short)
|
||||
index1 := s - 2
|
||||
|
||||
cv0 := load6432(src, index0)
|
||||
cv1 := load6432(src, index1)
|
||||
te0 := tableEntry{offset: index0 + e.cur, val: uint32(cv0)}
|
||||
te1 := tableEntry{offset: index1 + e.cur, val: uint32(cv1)}
|
||||
e.longTable[hash8(cv0, dFastLongTableBits)] = te0
|
||||
e.longTable[hash8(cv1, dFastLongTableBits)] = te1
|
||||
cv0 >>= 8
|
||||
cv1 >>= 8
|
||||
te0.offset++
|
||||
te1.offset++
|
||||
te0.val = uint32(cv0)
|
||||
te1.val = uint32(cv1)
|
||||
e.table[hash5(cv0, dFastShortTableBits)] = te0
|
||||
e.table[hash5(cv1, dFastShortTableBits)] = te1
|
||||
|
||||
cv = load6432(src, s)
|
||||
|
||||
if len(blk.sequences) <= 2 {
|
||||
continue
|
||||
}
|
||||
|
||||
// Check offset 2
|
||||
for {
|
||||
o2 := s - offset2
|
||||
if load3232(src, o2) != uint32(cv) {
|
||||
// Do regular search
|
||||
break
|
||||
}
|
||||
|
||||
// Store this, since we have it.
|
||||
nextHashS := hash5(cv1>>8, dFastShortTableBits)
|
||||
nextHashL := hash8(cv, dFastLongTableBits)
|
||||
|
||||
// We have at least 4 byte match.
|
||||
// No need to check backwards. We come straight from a match
|
||||
//l := 4 + e.matchlen(s+4, o2+4, src)
|
||||
l := 4 + int32(matchLen(src[s+4:], src[o2+4:]))
|
||||
|
||||
entry := tableEntry{offset: s + e.cur, val: uint32(cv)}
|
||||
e.longTable[nextHashL] = entry
|
||||
e.table[nextHashS] = entry
|
||||
seq.matchLen = uint32(l) - zstdMinMatch
|
||||
seq.litLen = 0
|
||||
|
||||
// Since litlen is always 0, this is offset 1.
|
||||
seq.offset = 1
|
||||
s += l
|
||||
nextEmit = s
|
||||
if debugSequences {
|
||||
println("sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
|
||||
// Swap offset 1 and 2.
|
||||
offset1, offset2 = offset2, offset1
|
||||
if s >= sLimit {
|
||||
// Finished
|
||||
break encodeLoop
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
}
|
||||
}
|
||||
|
||||
if int(nextEmit) < len(src) {
|
||||
blk.literals = append(blk.literals, src[nextEmit:]...)
|
||||
blk.extraLits = len(src) - int(nextEmit)
|
||||
}
|
||||
if debug {
|
||||
println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue