Llewellyn/fzf
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Remove unnecessary regexp matches

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This change does have positive effect on startup time of fzf when many
number of options are provided.

    time fzf --query=____ --filter=____ --delimiter=q --prompt=________ \
    --nth=1,2,3,4 --with-nth=1,2,3,4 --toggle-sort=ctrl-r \
    --expect=ctrl-x --tiebreak=index --color=light --bind=ctrl-t:accept \
    --history=/tmp/xxx --history-max=1000 --help

    0m0.013s -> 0m0.008s
This commit is contained in:
Junegunn Choi 2015-06-14 11:23:07 +09:00
parent 77bab51696
commit fe5b190a7d
1 changed files with 10 additions and 10 deletions
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20
src/options.go
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@ -174,11 +174,11 @@ func errorExit(msg string) {
help(1)
}
func optString(arg string, prefix string) (bool, string) {
rx, _ := regexp.Compile(fmt.Sprintf("^(?:%s)(.*)$", prefix))
matches := rx.FindStringSubmatch(arg)
if len(matches) > 1 {
return true, matches[1]
func optString(arg string, prefixes ...string) (bool, string) {
for _, prefix := range prefixes {
if strings.HasPrefix(arg, prefix) {
return true, arg[len(prefix):]
}
}
return false, ""
}
@ -605,19 +605,19 @@ func parseOptions(opts *Options, allArgs []string) {
case "--version":
opts.Version = true
default:
if match, value := optString(arg, "-q|--query="); match {
if match, value := optString(arg, "-q", "--query="); match {
opts.Query = value
} else if match, value := optString(arg, "-f|--filter="); match {
} else if match, value := optString(arg, "-f", "--filter="); match {
opts.Filter = &value
} else if match, value := optString(arg, "-d|--delimiter="); match {
} else if match, value := optString(arg, "-d", "--delimiter="); match {
opts.Delimiter = delimiterRegexp(value)
} else if match, value := optString(arg, "--prompt="); match {
opts.Prompt = value
} else if match, value := optString(arg, "-n|--nth="); match {
} else if match, value := optString(arg, "-n", "--nth="); match {
opts.Nth = splitNth(value)
} else if match, value := optString(arg, "--with-nth="); match {
opts.WithNth = splitNth(value)
} else if match, _ := optString(arg, "-s|--sort="); match {
} else if match, _ := optString(arg, "-s", "--sort="); match {
opts.Sort = 1 // Don't care
} else if match, value := optString(arg, "--toggle-sort="); match {
keymap = checkToggleSort(keymap, value)