diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/flate/level6.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/flate/level6.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/vendor/github.com/klauspost/compress/flate/level6.go b/vendor/github.com/klauspost/compress/flate/level6.go index a52c80ea4..a709977ec 100644 --- a/vendor/github.com/klauspost/compress/flate/level6.go +++ b/vendor/github.com/klauspost/compress/flate/level6.go @@ -211,6 +211,31 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) { l += e.matchlenLong(s+l, t+l, src) } + // Try to locate a better match by checking the end-of-match... + if sAt := s + l; sAt < sLimit { + eLong := &e.bTable[hash7(load6432(src, sAt), tableBits)] + // Test current + t2 := eLong.Cur.offset - e.cur - l + off := s - t2 + if off < maxMatchOffset { + if off > 0 && t2 >= 0 { + if l2 := e.matchlenLong(s, t2, src); l2 > l { + t = t2 + l = l2 + } + } + // Test next: + t2 = eLong.Prev.offset - e.cur - l + off := s - t2 + if off > 0 && off < maxMatchOffset && t2 >= 0 { + if l2 := e.matchlenLong(s, t2, src); l2 > l { + t = t2 + l = l2 + } + } + } + } + // Extend backwards for t > 0 && s > nextEmit && src[t-1] == src[s-1] { s-- |