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Performance tuning - eager rune array conversion

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> wc -l /tmp/list2
     2594098 /tmp/list2

    > time cat /tmp/list2 | fzf-0.10.1-darwin_amd64 -fqwerty > /dev/null

    real    0m5.418s
    user    0m10.990s
    sys     0m1.302s

    > time cat /tmp/list2 | fzf-head -fqwerty > /dev/null

    real    0m4.862s
    user    0m6.619s
    sys     0m0.982s
This commit is contained in:
Junegunn Choi
2015-08-02 14:00:18 +09:00
parent 634670e3ea
commit 0ea66329b8
18 changed files with 163 additions and 154 deletions
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13
src/ansi.go
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@@ -36,7 +36,7 @@ func init() {
ansiRegex = regexp.MustCompile("\x1b\\[[0-9;]*[mK]")
}
func extractColor(str *string, state *ansiState) (*string, []ansiOffset, *ansiState) {
func extractColor(str string, state *ansiState) (string, []ansiOffset, *ansiState) {
var offsets []ansiOffset
var output bytes.Buffer
@@ -45,9 +45,9 @@ func extractColor(str *string, state *ansiState) (*string, []ansiOffset, *ansiSt
}
idx := 0
for _, offset := range ansiRegex.FindAllStringIndex(*str, -1) {
output.WriteString((*str)[idx:offset[0]])
newState := interpretCode((*str)[offset[0]:offset[1]], state)
for _, offset := range ansiRegex.FindAllStringIndex(str, -1) {
output.WriteString(str[idx:offset[0]])
newState := interpretCode(str[offset[0]:offset[1]], state)
if !newState.equals(state) {
if state != nil {
@@ -69,7 +69,7 @@ func extractColor(str *string, state *ansiState) (*string, []ansiOffset, *ansiSt
idx = offset[1]
}
rest := (*str)[idx:]
rest := str[idx:]
if len(rest) > 0 {
output.WriteString(rest)
if state != nil {
@@ -77,8 +77,7 @@ func extractColor(str *string, state *ansiState) (*string, []ansiOffset, *ansiSt
(&offsets[len(offsets)-1]).offset[1] = int32(utf8.RuneCount(output.Bytes()))
}
}
outputStr := output.String()
return &outputStr, offsets, state
return output.String(), offsets, state
}
func interpretCode(ansiCode string, prevState *ansiState) *ansiState {