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|
package fzf
import (
"fmt"
"os"
"regexp"
"strconv"
"strings"
"unicode/utf8"
"github.com/junegunn/fzf/src/curses"
"github.com/junegunn/go-shellwords"
)
const usage = `usage: fzf [options]
Search mode
-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, --no-sort Do not sort the result
--tac Reverse the order of the input
--tiebreak=CRI Sort criterion when the scores are tied;
[length|begin|end|index] (default: length)
Interface
-m, --multi Enable multi-select with tab/shift-tab
--ansi Enable processing of ANSI color codes
--no-mouse Disable mouse
--color=COLSPEC Base scheme (dark|light|16|bw) and/or custom colors
--black Use black background
--reverse Reverse orientation
--no-hscroll Disable horizontal scroll
--inline-info Display finder info inline with the query
--prompt=STR Input prompt (default: '> ')
--toggle-sort=KEY Key to toggle sort
--bind=KEYBINDS Custom key bindings. Refer to the man page.
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.
--null Read null-byte separated strings from input
--print-query Print query as the first line
--expect=KEYS Comma-separated list of keys to complete fzf
--sync Synchronous search for multi-staged filtering
Environment variables
FZF_DEFAULT_COMMAND Default command to use when input is tty
FZF_DEFAULT_OPTS Defaults options. (e.g. '-x -m')
`
// Mode denotes the current search mode
type Mode int
// Search modes
const (
ModeFuzzy Mode = iota
ModeExtended
ModeExtendedExact
)
// Case denotes case-sensitivity of search
type Case int
// Case-sensitivities
const (
CaseSmart Case = iota
CaseIgnore
CaseRespect
)
// Sort criteria
type tiebreak int
const (
byLength tiebreak = iota
byBegin
byEnd
byIndex
)
// Options stores the values of command-line options
type Options struct {
Mode Mode
Case Case
Nth []Range
WithNth []Range
Delimiter *regexp.Regexp
Sort int
Tac bool
Tiebreak tiebreak
Multi bool
Ansi bool
Mouse bool
Theme *curses.ColorTheme
Black bool
Reverse bool
Hscroll bool
InlineInfo bool
Prompt string
Query string
Select1 bool
Exit0 bool
Filter *string
ToggleSort bool
Expect []int
Keymap map[int]actionType
PrintQuery bool
ReadZero bool
Sync bool
Version bool
}
func defaultTheme() *curses.ColorTheme {
if strings.Contains(os.Getenv("TERM"), "256") {
return curses.Dark256
}
return curses.Default16
}
func defaultOptions() *Options {
return &Options{
Mode: ModeFuzzy,
Case: CaseSmart,
Nth: make([]Range, 0),
WithNth: make([]Range, 0),
Delimiter: nil,
Sort: 1000,
Tac: false,
Tiebreak: byLength,
Multi: false,
Ansi: false,
Mouse: true,
Theme: defaultTheme(),
Black: false,
Reverse: false,
Hscroll: true,
InlineInfo: false,
Prompt: "> ",
Query: "",
Select1: false,
Exit0: false,
Filter: nil,
ToggleSort: false,
Expect: []int{},
Keymap: defaultKeymap(),
PrintQuery: false,
ReadZero: false,
Sync: 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)(.*)$", prefix))
matches := rx.FindStringSubmatch(arg)
if len(matches) > 1 {
return true, matches[1]
}
return false, ""
}
func nextString(args []string, i *int, message string) string {
if len(args) > *i+1 {
*i++
} else {
errorExit(message)
}
return args[*i]
}
func optionalNextString(args []string, i *int) string {
if len(args) > *i+1 {
*i++
return args[*i]
}
return ""
}
func optionalNumeric(args []string, i *int) int {
if len(args) > *i+1 {
if strings.IndexAny(args[*i+1], "0123456789") == 0 {
*i++
}
}
return 1 // Don't care
}
func splitNth(str string) []Range {
if match, _ := regexp.MatchString("^[0-9,-.]+$", 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 isAlphabet(char uint8) bool {
return char >= 'a' && char <= 'z'
}
func parseKeyChords(str string, message string) []int {
if len(str) == 0 {
errorExit(message)
}
tokens := strings.Split(str, ",")
if str == "," || strings.HasPrefix(str, ",,") || strings.HasSuffix(str, ",,") || strings.Index(str, ",,,") >= 0 {
tokens = append(tokens, ",")
}
var chords []int
for _, key := range tokens {
if len(key) ==
|