277 lines
6.9 KiB
Go
277 lines
6.9 KiB
Go
package fzf
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/junegunn/go-shellwords"
|
|
"os"
|
|
"regexp"
|
|
"strings"
|
|
)
|
|
|
|
const USAGE = `usage: fzf [options]
|
|
|
|
Search
|
|
-x, --extended Extended-search mode
|
|
-e, --extended-exact Extended-search mode (exact match)
|
|
-i Case-insensitive match (default: smart-case match)
|
|
+i Case-sensitive match
|
|
-n, --nth=N[,..] Comma-separated list of field index expressions
|
|
for limiting search scope. Each can be a non-zero
|
|
integer or a range expression ([BEGIN]..[END])
|
|
--with-nth=N[,..] Transform the item using index expressions for search
|
|
-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
|
|
|
|
Search result
|
|
-s, --sort Sort the result
|
|
+s, --no-sort Do not sort the result. Keep the sequence unchanged.
|
|
|
|
Interface
|
|
-m, --multi Enable multi-select with tab/shift-tab
|
|
--no-mouse Disable mouse
|
|
+c, --no-color Disable colors
|
|
+2, --no-256 Disable 256-color
|
|
--black Use black background
|
|
--reverse Reverse orientation
|
|
--prompt=STR Input prompt (default: '> ')
|
|
|
|
Scripting
|
|
-q, --query=STR Start the finder with the given query
|
|
-1, --select-1 Automatically select the only match
|
|
-0, --exit-0 Exit immediately when there's no match
|
|
-f, --filter=STR Filter mode. Do not start interactive finder.
|
|
--print-query Print query as the first line
|
|
|
|
Environment variables
|
|
FZF_DEFAULT_COMMAND Default command to use when input is tty
|
|
FZF_DEFAULT_OPTS Defaults options. (e.g. "-x -m")
|
|
|
|
`
|
|
|
|
type Mode int
|
|
|
|
const (
|
|
MODE_FUZZY Mode = iota
|
|
MODE_EXTENDED
|
|
MODE_EXTENDED_EXACT
|
|
)
|
|
|
|
type Case int
|
|
|
|
const (
|
|
CASE_SMART Case = iota
|
|
CASE_IGNORE
|
|
CASE_RESPECT
|
|
)
|
|
|
|
type Options struct {
|
|
Mode Mode
|
|
Case Case
|
|
Nth []Range
|
|
WithNth []Range
|
|
Delimiter *regexp.Regexp
|
|
Sort int
|
|
Multi bool
|
|
Mouse bool
|
|
Color bool
|
|
Color256 bool
|
|
Black bool
|
|
Reverse bool
|
|
Prompt string
|
|
Query string
|
|
Select1 bool
|
|
Exit0 bool
|
|
Filter *string
|
|
PrintQuery bool
|
|
Version bool
|
|
}
|
|
|
|
func DefaultOptions() *Options {
|
|
return &Options{
|
|
Mode: MODE_FUZZY,
|
|
Case: CASE_SMART,
|
|
Nth: make([]Range, 0),
|
|
WithNth: make([]Range, 0),
|
|
Delimiter: nil,
|
|
Sort: 1000,
|
|
Multi: false,
|
|
Mouse: true,
|
|
Color: true,
|
|
Color256: strings.Contains(os.Getenv("TERM"), "256"),
|
|
Black: false,
|
|
Reverse: false,
|
|
Prompt: "> ",
|
|
Query: "",
|
|
Select1: false,
|
|
Exit0: false,
|
|
Filter: nil,
|
|
PrintQuery: false,
|
|
Version: false}
|
|
}
|
|
|
|
func help(ok int) {
|
|
os.Stderr.WriteString(USAGE)
|
|
os.Exit(ok)
|
|
}
|
|
|
|
func errorExit(msg string) {
|
|
os.Stderr.WriteString(msg + "\n")
|
|
help(1)
|
|
}
|
|
|
|
func optString(arg string, prefix string) (bool, string) {
|
|
rx, _ := regexp.Compile(fmt.Sprintf("^(?:%s)(.*)$", prefix))
|
|
matches := rx.FindStringSubmatch(arg)
|
|
if len(matches) > 1 {
|
|
return true, matches[1]
|
|
} else {
|
|
return false, ""
|
|
}
|
|
}
|
|
|
|
func nextString(args []string, i *int, message string) string {
|
|
if len(args) > *i+1 {
|
|
*i++
|
|
} else {
|
|
errorExit(message)
|
|
}
|
|
return args[*i]
|
|
}
|
|
|
|
func optionalNumeric(args []string, i *int) int {
|
|
if len(args) > *i+1 {
|
|
if strings.IndexAny(args[*i+1], "0123456789") == 0 {
|
|
*i++
|
|
}
|
|
}
|
|
return 1 // Don't care
|
|
}
|
|
|
|
func splitNth(str string) []Range {
|
|
if match, _ := regexp.MatchString("^[0-9,-.]+$", str); !match {
|
|
errorExit("invalid format: " + str)
|
|
}
|
|
|
|
tokens := strings.Split(str, ",")
|
|
ranges := make([]Range, len(tokens))
|
|
for idx, s := range tokens {
|
|
r, ok := ParseRange(&s)
|
|
if !ok {
|
|
errorExit("invalid format: " + str)
|
|
}
|
|
ranges[idx] = r
|
|
}
|
|
return ranges
|
|
}
|
|
|
|
func delimiterRegexp(str string) *regexp.Regexp {
|
|
rx, e := regexp.Compile(str)
|
|
if e != nil {
|
|
str = regexp.QuoteMeta(str)
|
|
}
|
|
|
|
rx, e = regexp.Compile(fmt.Sprintf("(?:.*?%s)|(?:.+?$)", str))
|
|
if e != nil {
|
|
errorExit("invalid regular expression: " + e.Error())
|
|
}
|
|
return rx
|
|
}
|
|
|
|
func parseOptions(opts *Options, allArgs []string) {
|
|
for i := 0; i < len(allArgs); i++ {
|
|
arg := allArgs[i]
|
|
switch arg {
|
|
case "-h", "--help":
|
|
help(0)
|
|
case "-x", "--extended":
|
|
opts.Mode = MODE_EXTENDED
|
|
case "-e", "--extended-exact":
|
|
opts.Mode = MODE_EXTENDED_EXACT
|
|
case "+x", "--no-extended", "+e", "--no-extended-exact":
|
|
opts.Mode = MODE_FUZZY
|
|
case "-q", "--query":
|
|
opts.Query = nextString(allArgs, &i, "query string required")
|
|
case "-f", "--filter":
|
|
filter := nextString(allArgs, &i, "query string required")
|
|
opts.Filter = &filter
|
|
case "-d", "--delimiter":
|
|
opts.Delimiter = delimiterRegexp(nextString(allArgs, &i, "delimiter required"))
|
|
case "-n", "--nth":
|
|
opts.Nth = splitNth(nextString(allArgs, &i, "nth expression required"))
|
|
case "--with-nth":
|
|
opts.WithNth = splitNth(nextString(allArgs, &i, "nth expression required"))
|
|
case "-s", "--sort":
|
|
opts.Sort = optionalNumeric(allArgs, &i)
|
|
case "+s", "--no-sort":
|
|
opts.Sort = 0
|
|
case "-i":
|
|
opts.Case = CASE_IGNORE
|
|
case "+i":
|
|
opts.Case = CASE_RESPECT
|
|
case "-m", "--multi":
|
|
opts.Multi = true
|
|
case "+m", "--no-multi":
|
|
opts.Multi = false
|
|
case "--no-mouse":
|
|
opts.Mouse = false
|
|
case "+c", "--no-color":
|
|
opts.Color = false
|
|
case "+2", "--no-256":
|
|
opts.Color256 = false
|
|
case "--black":
|
|
opts.Black = true
|
|
case "--no-black":
|
|
opts.Black = false
|
|
case "--reverse":
|
|
opts.Reverse = true
|
|
case "--no-reverse":
|
|
opts.Reverse = false
|
|
case "-1", "--select-1":
|
|
opts.Select1 = true
|
|
case "+1", "--no-select-1":
|
|
opts.Select1 = false
|
|
case "-0", "--exit-0":
|
|
opts.Exit0 = true
|
|
case "+0", "--no-exit-0":
|
|
opts.Exit0 = false
|
|
case "--print-query":
|
|
opts.PrintQuery = true
|
|
case "--no-print-query":
|
|
opts.PrintQuery = false
|
|
case "--prompt":
|
|
opts.Prompt = nextString(allArgs, &i, "prompt string required")
|
|
case "--version":
|
|
opts.Version = true
|
|
default:
|
|
if match, value := optString(arg, "-q|--query="); match {
|
|
opts.Query = value
|
|
} else if match, value := optString(arg, "-f|--filter="); match {
|
|
opts.Filter = &value
|
|
} 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 {
|
|
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 {
|
|
opts.Sort = 1 // Don't care
|
|
} else {
|
|
errorExit("unknown option: " + arg)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func ParseOptions() *Options {
|
|
opts := DefaultOptions()
|
|
|
|
// Options from Env var
|
|
words, _ := shellwords.Parse(os.Getenv("FZF_DEFAULT_OPTS"))
|
|
parseOptions(opts, words)
|
|
|
|
// Options from command-line arguments
|
|
parseOptions(opts, os.Args[1:])
|
|
return opts
|
|
}
|