package fzf import ( "fmt" "os" "regexp" "strconv" "strings" "unicode/utf8" "github.com/junegunn/fzf/src/algo" "github.com/junegunn/fzf/src/tui" "github.com/junegunn/fzf/src/util" "github.com/mattn/go-shellwords" ) const usage = `usage: fzf [options] Search -x, --extended Extended-search mode (enabled by default; +x or --no-extended to disable) -e, --exact Enable Exact-match --algo=TYPE Fuzzy matching algorithm: [v1|v2] (default: v2) -i Case-insensitive match (default: smart-case match) +i Case-sensitive match --literal Do not normalize latin script letters before matching -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 presentation of each line using field index expressions -d, --delimiter=STR Field delimiter regex (default: AWK-style) +s, --no-sort Do not sort the result --tac Reverse the order of the input --tiebreak=CRI[,..] Comma-separated list of sort criteria to apply when the scores are tied [length|begin|end|index] (default: length) Interface -m, --multi Enable multi-select with tab/shift-tab --no-mouse Disable mouse --bind=KEYBINDS Custom key bindings. Refer to the man page. --cycle Enable cyclic scroll --no-hscroll Disable horizontal scroll --hscroll-off=COL Number of screen columns to keep to the right of the highlighted substring (default: 10) --filepath-word Make word-wise movements respect path separators --jump-labels=CHARS Label characters for jump and jump-accept Layout --height=HEIGHT[%] Display fzf window below the cursor with the given height instead of using fullscreen --min-height=HEIGHT Minimum height when --height is given in percent (default: 10) --layout=LAYOUT Choose layout: [default|reverse|reverse-list] --border Draw border above and below the finder --margin=MARGIN Screen margin (TRBL / TB,RL / T,RL,B / T,R,B,L) --inline-info Display finder info inline with the query --prompt=STR Input prompt (default: '> ') --header=STR String to print as header --header-lines=N The first N lines of the input are treated as header Display --ansi Enable processing of ANSI color codes --tabstop=SPACES Number of spaces for a tab character (default: 8) --color=COLSPEC Base scheme (dark|light|16|bw) and/or custom colors --no-bold Do not use bold text History --history=FILE History file --history-size=N Maximum number of history entries (default: 1000) Preview --preview=COMMAND Command to preview highlighted line ({}) --preview-window=OPT Preview window layout (default: right:50%) [up|down|left|right][:SIZE[%]][:wrap][:hidden] 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 --expect=KEYS Comma-separated list of keys to complete fzf --read0 Read input delimited by ASCII NUL characters --print0 Print output delimited by ASCII NUL characters --sync Synchronous search for multi-staged filtering --version Display version information and exit Environment variables FZF_DEFAULT_COMMAND Default command to use when input is tty FZF_DEFAULT_OPTS Default options (e.g. '--layout=reverse --inline-info') ` // Case denotes case-sensitivity of search type Case int // Case-sensitivities const ( CaseSmart Case = iota CaseIgnore CaseRespect ) // Sort criteria type criterion int const ( byScore criterion = iota byLength byBegin byEnd ) type sizeSpec struct { size float64 percent bool } func defaultMargin() [4]sizeSpec { return [4]sizeSpec{} } type windowPosition int const ( posUp windowPosition = iota posDown posLeft posRight ) type layoutType int const ( layoutDefault layoutType = iota layoutReverse layoutReverseList ) type previewOpts struct { command string position windowPosition size sizeSpec hidden bool wrap bool } // Options stores the values of command-line options type Options struct { Fuzzy bool FuzzyAlgo algo.Algo Extended bool Case Case Normalize bool Nth []Range WithNth []Range Delimiter Delimiter Sort int Tac bool Criteria []criterion Multi bool Ansi bool Mouse bool Theme *tui.ColorTheme Black bool Bold bool Height sizeSpec MinHeight int Layout layoutType Cycle bool Hscroll bool HscrollOff int FileWord bool InlineInfo bool JumpLabels string Prompt string Query string Select1 bool Exit0 bool Filter *string ToggleSort bool Expect map[int]string Keymap map[int][]action Preview previewOpts PrintQuery bool ReadZero bool Printer func(string) Sync bool History *History Header []string HeaderLines int Margin [4]sizeSpec Bordered bool Tabstop int ClearOnExit bool Version bool } func defaultOptions() *Options { return &Options{ Fuzzy: true, FuzzyAlgo: algo.FuzzyMatchV2, Extended: true, Case: CaseSmart, Normalize: true, Nth: make([]Range, 0), WithNth: make([]Range, 0), Delimiter: Delimiter{}, Sort: 1000, Tac: false, Criteria: []criterion{byScore, byLength}, Multi: false, Ansi: false, Mouse: true, Theme: tui.EmptyTheme(), Black: false, Bold: true, MinHeight: 10, Layout: layoutDefault, Cycle: false, Hscroll: true, HscrollOff: 10, FileWord: false, InlineInfo: false, JumpLabels: defaultJumpLabels, Prompt: "> ", Query: "", Select1: false, Exit0: false, Filter: nil, ToggleSort: false, Expect: make(map[int]string), Keymap: make(map[int][]action), Preview: previewOpts{"", posRight, sizeSpec{50, true}, false, false}, PrintQuery: false, ReadZero: false, Printer: func(str string) { fmt.Println(str) }, Sync: false, History: nil, Header: make([]string, 0), HeaderLines: 0, Margin: defaultMargin(), Tabstop: 8, ClearOnExit: true, Version: false} } func help(code int) { os.Stderr.WriteString(usage) os.Exit(code) } func errorExit(msg string) { os.Stderr.WriteString(msg + "\n") os.Exit(exitError) } func optString(arg string, prefixes ...string) (bool, string) { for _, prefix := range prefixes { if strings.HasPrefix(arg, prefix) { return true, arg[len(prefix):] } } 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 && !strings.HasPrefix(args[*i+1], "-") { *i++ return args[*i] } return "" } func atoi(str string) int { num, err := strconv.Atoi(str) if err != nil { errorExit("not a valid integer: " + str) } return num } func atof(str string) float64 { num, err := strconv.ParseFloat(str, 64) if err != nil { errorExit("not a valid number: " + str) } return num } func nextInt(args []string, i *int, message string) int { if len(args) > *i+1 { *i++ } else { errorExit(message) } return atoi(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) Delimiter { // Special handling of \t str = strings.Replace(str, "\\t", "\t", -1) // 1. Pattern does not contain any special character if regexp.QuoteMeta(str) == str { return Delimiter{str: &str} } rx, e := regexp.Compile(str) // 2. Pattern is not a valid regular expression if e != nil { return Delimiter{str: &str} } // 3. Pattern as regular expression. Slow. return Delimiter{regex: rx} } func isAlphabet(char uint8) bool { return char >= 'a' && char <= 'z' } func isNumeric(char uint8) bool { return char >= '0' && char <= '9' } func parseAlgo(str string) algo.Algo { switch str { case "v1": return algo.FuzzyMatchV1 case "v2": return algo.FuzzyMatchV2 default: errorExit("invalid algorithm (expected: v1 or v2)") } return algo.FuzzyMatchV2 } func parseKeyChords(str string, message string) map[int]string { 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, ",") } chords := make(map[int]string) for _, key := range tokens { if len(key) == 0 { continue // ignore } lkey := strings.ToLower(key) chord := 0 switch lkey { case "up": chord = tui.Up case "down": chord = tui.Down case "left": chord = tui.Left case "right": chord = tui.Right case "enter", "return": chord = tui.CtrlM case "space": chord = tui.AltZ + int(' ') case "bspace", "bs": chord = tui.BSpace case "ctrl-space": chord = tui.CtrlSpace case "change": chord = tui.Change case "alt-enter", "alt-return": chord = tui.CtrlAltM case "alt-space": chord = tui.AltSpace case "alt-/": chord = tui.AltSlash case "alt-bs", "alt-bspace": chord = tui.AltBS case "alt-up": chord = tui.AltUp case "alt-down": chord = tui.AltDown case "alt-left": chord = tui.AltLeft case "alt-right": chord = tui.AltRight case "tab": chord = tui.Tab case "btab", "shift-tab": chord = tui.BTab case "esc": chord = tui.ESC case "del": chord = tui.Del case "home": chord = tui.Home case "end": chord = tui.End case "pgup", "page-up": chord = tui.PgUp case "pgdn", "page-down": chord = tui.PgDn case "shift-up": chord = tui.SUp case "shift-down": chord = tui.SDown case "shift-left": chord = tui.SLeft case "shift-right": chord = tui.SRight case "left-click": chord = tui.LeftClick case "right-click": chord = tui.RightClick case "double-click": chord = tui.DoubleClick case "f10": chord = tui.F10 case "f11": chord = tui.F11 case "f12": chord = tui.F12 default: if len(key) == 10 && strings.HasPrefix(lkey, "ctrl-alt-") && isAlphabet(lkey[9]) { chord = tui.CtrlAltA + int(lkey[9]) - 'a' } else if len(key) == 6 && strings.HasPrefix(lkey, "ctrl-") && isAlphabet(lkey[5]) { chord = tui.CtrlA + int(lkey[5]) - 'a' } else if len(key) == 5 && strings.HasPrefix(lkey, "alt-") && isAlphabet(lkey[4]) { chord = tui.AltA + int(lkey[4]) - 'a' } else if len(key) == 5 && strings.HasPrefix(lkey, "alt-") && isNumeric(lkey[4]) { chord = tui.Alt0 + int(lkey[4]) - '0' } else if len(key) == 2 && strings.HasPrefix(lkey, "f") && key[1] >= '1' && key[1] <= '9' { chord = tui.F1 + int(key[1]) - '1' } else if utf8.RuneCountInString(key) == 1 { chord = tui.AltZ + int([]rune(key)[0]) } else { errorExit("unsupported key: " + key) } } if chord > 0 { chords[chord] = key } } return chords } func parseTiebreak(str string) []criterion { criteria := []criterion{byScore} hasIndex := false hasLength := false hasBegin := false hasEnd := false check := func(notExpected *bool, name string) { if *notExpected { errorExit("duplicate sort criteria: " + name) } if hasIndex { errorExit("index should be the last criterion") } *notExpected = true } for _, str := range strings.Split(strings.ToLower(str), ",") { switch str { case "index": check(&hasIndex, "index") case "length": check(&hasLength, "length") criteria = append(criteria, byLength) case "begin": check(&hasBegin, "begin") criteria = append(criteria, byBegin) case "end": check(&hasEnd, "end") criteria = append(criteria, byEnd) default: errorExit("invalid sort criterion: " + str) } } return criteria } func dupeTheme(theme *tui.ColorTheme) *tui.ColorTheme { if theme != nil { dupe := *theme return &dupe } return nil } func parseTheme(defaultTheme *tui.ColorTheme, str string) *tui.ColorTheme { theme := dupeTheme(defaultTheme) rrggbb := regexp.MustCompile("^#[0-9a-fA-F]{6}$") for _, str := range strings.Split(strings.ToLower(str), ",") { switch str { case "dark": theme = dupeTheme(tui.Dark256) case "light": theme = dupeTheme(tui.Light256) case "16": theme = dupeTheme(tui.Default16) case "bw", "no": theme = nil default: fail := func() { errorExit("invalid color specification: " + str) } // Color is disabled if theme == nil { continue } pair := strings.Split(str, ":") if len(pair) != 2 { fail() } var ansi tui.Color if rrggbb.MatchString(pair[1]) { ansi = tui.HexToColor(pair[1]) } else { ansi32, err := strconv.Atoi(pair[1]) if err != nil || ansi32 < -1 || ansi32 > 255 { fail() } ansi = tui.Color(ansi32) } switch pair[0] { case "fg": theme.Fg = ansi case "bg": theme.Bg = ansi case "fg+": theme.Current = ansi case "bg+": theme.DarkBg = ansi case "hl": theme.Match = ansi case "hl+": theme.CurrentMatch = ansi case "border": theme.Border = ansi case "prompt": theme.Prompt = ansi case "spinner": theme.Spinner = ansi case "info": theme.Info = ansi case "pointer": theme.Cursor = ansi case "marker": theme.Selected = ansi case "header": theme.Header = ansi default: fail() } } } return theme } var executeRegexp *regexp.Regexp func firstKey(keymap map[int]string) int { for k := range keymap { return k } return 0 } const ( escapedColon = 0 escapedComma = 1 escapedPlus = 2 ) func init() { // Backreferences are not supported. // "~!@#$%^&*;/|".each_char.map { |c| Regexp.escape(c) }.map { |c| "#{c}[^#{c}]*#{c}" }.join('|') executeRegexp = regexp.MustCompile( "(?si):(execute(?:-multi|-silent)?):.+|:(execute(?:-multi|-silent)?)(\\([^)]*\\)|\\[[^\\]]*\\]|~[^~]*~|![^!]*!|@[^@]*@|\\#[^\\#]*\\#|\\$[^\\$]*\\$|%[^%]*%|\\^[^\\^]*\\^|&[^&]*&|\\*[^\\*]*\\*|;[^;]*;|/[^/]*/|\\|[^\\|]*\\|)") } func parseKeymap(keymap map[int][]action, str string) { masked := executeRegexp.ReplaceAllStringFunc(str, func(src string) string { prefix := ":execute" if src[len(prefix)] == '-' { c := src[len(prefix)+1] if c == 's' || c == 'S' { prefix += "-silent" } else { prefix += "-multi" } } return prefix + "(" + strings.Repeat(" ", len(src)-len(prefix)-2) + ")" }) masked = strings.Replace(masked, "::", string([]rune{escapedColon, ':'}), -1) masked = strings.Replace(masked, ",:", string([]rune{escapedComma, ':'}), -1) masked = strings.Replace(masked, "+:", string([]rune{escapedPlus, ':'}), -1) idx := 0 for _, pairStr := range strings.Split(masked, ",") { origPairStr := str[idx : idx+len(pairStr)] idx += len(pairStr) + 1 pair := strings.SplitN(pairStr, ":", 2) if len(pair) < 2 { errorExit("bind action not specified: " + origPairStr) } var key int if len(pair[0]) == 1 && pair[0][0] == escapedColon { key = ':' + tui.AltZ } else if len(pair[0]) == 1 && pair[0][0] == escapedComma { key = ',' + tui.AltZ } else if len(pair[0]) == 1 && pair[0][0] == escapedPlus { key = '+' + tui.AltZ } else { keys := parseKeyChords(pair[0], "key name required") key = firstKey(keys) } idx2 := len(pair[0]) + 1 specs := strings.Split(pair[1], "+") actions := make([]action, 0, len(specs)) appendAction := func(types ...actionType) { actions = append(actions, toActions(types...)...) } prevSpec := "" for specIndex, maskedSpec := range specs { spec := origPairStr[idx2 : idx2+len(maskedSpec)] idx2 += len(maskedSpec) + 1 spec = prevSpec + spec specLower := strings.ToLower(spec) switch specLower { case "ignore": appendAction(actIgnore) case "beginning-of-line": appendAction(actBeginningOfLine) case "abort": appendAction(actAbort) case "accept": appendAction(actAccept) case "accept-non-empty": appendAction(actAcceptNonEmpty) case "print-query": appendAction(actPrintQuery) case "replace-query": appendAction(actReplaceQuery) case "backward-char": appendAction(actBackwardChar) case "backward-delete-char": appendAction(actBackwardDeleteChar) case "backward-word": appendAction(actBackwardWord) case "clear-screen": appendAction(actClearScreen) case "delete-char": appendAction(actDeleteChar) case "delete-char/eof": appendAction(actDeleteCharEOF) case "end-of-line": appendAction(actEndOfLine) case "cancel": appendAction(actCancel) case "forward-char": appendAction(actForwardChar) case "forward-word": appendAction(actForwardWord) case "jump": appendAction(actJump) case "jump-accept": appendAction(actJumpAccept) case "kill-line": appendAction(actKillLine) case "kill-word": appendAction(actKillWord) case "unix-line-discard", "line-discard": appendAction(actUnixLineDiscard) case "unix-word-rubout", "word-rubout": appendAction(actUnixWordRubout) case "yank": appendAction(actYank) case "backward-kill-word": appendAction(actBackwardKillWord) case "toggle-down": appendAction(actToggle, actDown) case "toggle-up": appendAction(actToggle, actUp) case "toggle-in": appendAction(actToggleIn) case "toggle-out": appendAction(actToggleOut) case "toggle-all": appendAction(actToggleAll) case "select-all": appendAction(actSelectAll) case "deselect-all": appendAction(actDeselectAll) case "toggle": appendAction(actToggle) case "down": appendAction(actDown) case "up": appendAction(actUp) case "top": appendAction(actTop) case "page-up": appendAction(actPageUp) case "page-down": appendAction(actPageDown) case "half-page-up": appendAction(actHalfPageUp) case "half-page-down": appendAction(actHalfPageDown) case "previous-history": appendAction(actPreviousHistory) case "next-history": appendAction(actNextHistory) case "toggle-preview": appendAction(actTogglePreview) case "toggle-preview-wrap": appendAction(actTogglePreviewWrap) case "toggle-sort": appendAction(actToggleSort) case "preview-up": appendAction(actPreviewUp) case "preview-down": appendAction(actPreviewDown) case "preview-page-up": appendAction(actPreviewPageUp) case "preview-page-down": appendAction(actPreviewPageDown) default: t := isExecuteAction(specLower) if t == actIgnore { errorExit("unknown action: " + spec) } else { var offset int switch t { case actExecuteSilent: offset = len("execute-silent") case actExecuteMulti: offset = len("execute-multi") default: offset = len("execute") } if spec[offset] == ':' { if specIndex == len(specs)-1 { actions = append(actions, action{t: t, a: spec[offset+1:]}) } else { prevSpec = spec + "+" continue } } else { actions = append(actions, action{t: t, a: spec[offset+1 : len(spec)-1]}) } } } prevSpec = "" } keymap[key] = actions } } func isExecuteAction(str string) actionType { matches := executeRegexp.FindAllStringSubmatch(":"+str, -1) if matches == nil || len(matches) != 1 { return actIgnore } prefix := matches[0][1] if len(prefix) == 0 { prefix = matches[0][2] } switch prefix { case "execute": return actExecute case "execute-silent": return actExecuteSilent case "execute-multi": return actExecuteMulti } return actIgnore } func parseToggleSort(keymap map[int][]action, str string) { keys := parseKeyChords(str, "key name required") if len(keys) != 1 { errorExit("multiple keys specified") } keymap[firstKey(keys)] = toActions(actToggleSort) } func strLines(str string) []string { return strings.Split(strings.TrimSuffix(str, "\n"), "\n") } func parseSize(str string, maxPercent float64, label string) sizeSpec { var val float64 percent := strings.HasSuffix(str, "%") if percent { val = atof(str[:len(str)-1]) if val < 0 { errorExit(label + " must be non-negative") } if val > maxPercent { errorExit(fmt.Sprintf("%s too large (max: %d%%)", label, int(maxPercent))) } } else { if strings.Contains(str, ".") { errorExit(label + " (without %) must be a non-negative integer") } val = float64(atoi(str)) if val < 0 { errorExit(label + " must be non-negative") } } return sizeSpec{val, percent} } func parseHeight(str string) sizeSpec { size := parseSize(str, 100, "height") return size } func parseLayout(str string) layoutType { switch str { case "default": return layoutDefault case "reverse": return layoutReverse case "reverse-list": return layoutReverseList default: errorExit("invalid layout (expected: default / reverse / reverse-list)") } return layoutDefault } func parsePreviewWindow(opts *previewOpts, input string) { // Default opts.position = posRight opts.size = sizeSpec{50, true} opts.hidden = false opts.wrap = false tokens := strings.Split(input, ":") sizeRegex := regexp.MustCompile("^[0-9]+%?$") for _, token := range tokens { switch token { case "hidden": opts.hidden = true case "wrap": opts.wrap = true case "up", "top": opts.position = posUp case "down", "bottom": opts.position = posDown case "left": opts.position = posLeft case "right": opts.position = posRight default: if sizeRegex.MatchString(token) { opts.size = parseSize(token, 99, "window size") } else { errorExit("invalid preview window layout: " + input) } } } if !opts.size.percent && opts.size.size > 0 { // Adjust size for border opts.size.size += 2 // And padding if opts.position == posLeft || opts.position == posRight { opts.size.size += 2 } } } func parseMargin(margin string) [4]sizeSpec { margins := strings.Split(margin, ",") checked := func(str string) sizeSpec { return parseSize(str, 49, "margin") } switch len(margins) { case 1: m := checked(margins[0]) return [4]sizeSpec{m, m, m, m} case 2: tb := checked(margins[0]) rl := checked(margins[1]) return [4]sizeSpec{tb, rl, tb, rl} case 3: t := checked(margins[0]) rl := checked(margins[1]) b := checked(margins[2]) return [4]sizeSpec{t, rl, b, rl} case 4: return [4]sizeSpec{ checked(margins[0]), checked(margins[1]), checked(margins[2]), checked(margins[3])} default: errorExit("invalid margin: " + margin) } return defaultMargin() } func parseOptions(opts *Options, allArgs []string) { var historyMax int if opts.History == nil { historyMax = defaultHistoryMax } else { historyMax = opts.History.maxSize } setHistory := func(path string) { h, e := NewHistory(path, historyMax) if e != nil { errorExit(e.Error()) } opts.History = h } setHistoryMax := func(max int) { historyMax = max if historyMax < 1 { errorExit("history max must be a positive integer") } if opts.History != nil { opts.History.maxSize = historyMax } } validateJumpLabels := false for i := 0; i < len(allArgs); i++ { arg := allArgs[i] switch arg { case "-h", "--help": help(exitOk) case "-x", "--extended": opts.Extended = true case "-e", "--exact": opts.Fuzzy = false case "--extended-exact": // Note that we now don't have --no-extended-exact opts.Fuzzy = false opts.Extended = true case "+x", "--no-extended": opts.Extended = false case "+e", "--no-exact": opts.Fuzzy = true 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 "--literal": opts.Normalize = false case "--no-literal": opts.Normalize = true case "--algo": opts.FuzzyAlgo = parseAlgo(nextString(allArgs, &i, "algorithm required (v1|v2)")) case "--expect": for k, v := range parseKeyChords(nextString(allArgs, &i, "key names required"), "key names required") { opts.Expect[k] = v } case "--no-expect": opts.Expect = make(map[int]string) case "--tiebreak": opts.Criteria = parseTiebreak(nextString(allArgs, &i, "sort criterion required")) case "--bind": parseKeymap(opts.Keymap, nextString(allArgs, &i, "bind expression required")) case "--color": spec := optionalNextString(allArgs, &i) if len(spec) == 0 { opts.Theme = tui.EmptyTheme() } else { opts.Theme = parseTheme(opts.Theme, spec) } case "--toggle-sort": parseToggleSort(opts.Keymap, nextString(allArgs, &i, "key name required")) 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 "--tac": opts.Tac = true case "--no-tac": opts.Tac = false case "-i": opts.Case = CaseIgnore case "+i": opts.Case = CaseRespect case "-m", "--multi": opts.Multi = true case "+m", "--no-multi": opts.Multi = false case "--ansi": opts.Ansi = true case "--no-ansi": opts.Ansi = false case "--no-mouse": opts.Mouse = false case "+c", "--no-color": opts.Theme = nil case "+2", "--no-256": opts.Theme = tui.Default16 case "--black": opts.Black = true case "--no-black": opts.Black = false case "--bold": opts.Bold = true case "--no-bold": opts.Bold = false case "--layout": opts.Layout = parseLayout( nextString(allArgs, &i, "layout required (default / reverse / reverse-list)")) case "--reverse": opts.Layout = layoutReverse case "--no-reverse": opts.Layout = layoutDefault case "--cycle": opts.Cycle = true case "--no-cycle": opts.Cycle = false case "--hscroll": opts.Hscroll = true case "--no-hscroll": opts.Hscroll = false case "--hscroll-off": opts.HscrollOff = nextInt(allArgs, &i, "hscroll offset required") case "--filepath-word": opts.FileWord = true case "--no-filepath-word": opts.FileWord = false case "--inline-info": opts.InlineInfo = true case "--no-inline-info": opts.InlineInfo = false case "--jump-labels": opts.JumpLabels = nextString(allArgs, &i, "label characters required") validateJumpLabels = true 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 "--read0": opts.ReadZero = true case "--no-read0": opts.ReadZero = false case "--print0": opts.Printer = func(str string) { fmt.Print(str, "\x00") } case "--no-print0": opts.Printer = func(str string) { fmt.Println(str) } case "--print-query": opts.PrintQuery = true case "--no-print-query": opts.PrintQuery = false case "--prompt": opts.Prompt = nextString(allArgs, &i, "prompt string required") case "--sync": opts.Sync = true case "--no-sync": opts.Sync = false case "--async": opts.Sync = false case "--no-history": opts.History = nil case "--history": setHistory(nextString(allArgs, &i, "history file path required")) case "--history-size": setHistoryMax(nextInt(allArgs, &i, "history max size required")) case "--no-header": opts.Header = []string{} case "--no-header-lines": opts.HeaderLines = 0 case "--header": opts.Header = strLines(nextString(allArgs, &i, "header string required")) case "--header-lines": opts.HeaderLines = atoi( nextString(allArgs, &i, "number of header lines required")) case "--preview": opts.Preview.command = nextString(allArgs, &i, "preview command required") case "--no-preview": opts.Preview.command = "" case "--preview-window": parsePreviewWindow(&opts.Preview, nextString(allArgs, &i, "preview window layout required: [up|down|left|right][:SIZE[%]][:wrap][:hidden]")) case "--height": opts.Height = parseHeight(nextString(allArgs, &i, "height required: HEIGHT[%]")) case "--min-height": opts.MinHeight = nextInt(allArgs, &i, "height required: HEIGHT") case "--no-height": opts.Height = sizeSpec{} case "--no-margin": opts.Margin = defaultMargin() case "--no-border": opts.Bordered = false case "--border": opts.Bordered = true case "--margin": opts.Margin = parseMargin( nextString(allArgs, &i, "margin required (TRBL / TB,RL / T,RL,B / T,R,B,L)")) case "--tabstop": opts.Tabstop = nextInt(allArgs, &i, "tab stop required") case "--clear": opts.ClearOnExit = true case "--no-clear": opts.ClearOnExit = false case "--version": opts.Version = true default: if match, value := optString(arg, "--algo="); match { opts.FuzzyAlgo = parseAlgo(value) } else 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 if match, value := optString(arg, "--height="); match { opts.Height = parseHeight(value) } else if match, value := optString(arg, "--min-height="); match { opts.MinHeight = atoi(value) } else if match, value := optString(arg, "--layout="); match { opts.Layout = parseLayout(value) } else if match, value := optString(arg, "--toggle-sort="); match { parseToggleSort(opts.Keymap, value) } else if match, value := optString(arg, "--expect="); match { for k, v := range parseKeyChords(value, "key names required") { opts.Expect[k] = v } } else if match, value := optString(arg, "--tiebreak="); match { opts.Criteria = parseTiebreak(value) } else if match, value := optString(arg, "--color="); match { opts.Theme = parseTheme(opts.Theme, value) } else if match, value := optString(arg, "--bind="); match { parseKeymap(opts.Keymap, value) } else if match, value := optString(arg, "--history="); match { setHistory(value) } else if match, value := optString(arg, "--history-size="); match { setHistoryMax(atoi(value)) } else if match, value := optString(arg, "--header="); match { opts.Header = strLines(value) } else if match, value := optString(arg, "--header-lines="); match { opts.HeaderLines = atoi(value) } else if match, value := optString(arg, "--preview="); match { opts.Preview.command = value } else if match, value := optString(arg, "--preview-window="); match { parsePreviewWindow(&opts.Preview, value) } else if match, value := optString(arg, "--margin="); match { opts.Margin = parseMargin(value) } else if match, value := optString(arg, "--tabstop="); match { opts.Tabstop = atoi(value) } else if match, value := optString(arg, "--hscroll-off="); match { opts.HscrollOff = atoi(value) } else if match, value := optString(arg, "--jump-labels="); match { opts.JumpLabels = value } else { errorExit("unknown option: " + arg) } } } if opts.HeaderLines < 0 { errorExit("header lines must be a non-negative integer") } if opts.HscrollOff < 0 { errorExit("hscroll offset must be a non-negative integer") } if opts.Tabstop < 1 { errorExit("tab stop must be a positive integer") } if len(opts.JumpLabels) == 0 { errorExit("empty jump labels") } if validateJumpLabels { for _, r := range opts.JumpLabels { if r < 32 || r > 126 { errorExit("non-ascii jump labels are not allowed") } } } } func postProcessOptions(opts *Options) { if util.IsWindows() && opts.Height.size > 0 { errorExit("--height option is currently not supported on Windows") } // Default actions for CTRL-N / CTRL-P when --history is set if opts.History != nil { if _, prs := opts.Keymap[tui.CtrlP]; !prs { opts.Keymap[tui.CtrlP] = toActions(actPreviousHistory) } if _, prs := opts.Keymap[tui.CtrlN]; !prs { opts.Keymap[tui.CtrlN] = toActions(actNextHistory) } } // Extend the default key map keymap := defaultKeymap() for key, actions := range opts.Keymap { for _, act := range actions { if act.t == actToggleSort { opts.ToggleSort = true } } keymap[key] = actions } opts.Keymap = keymap // If we're not using extended search mode, --nth option becomes irrelevant // if it contains the whole range if !opts.Extended || len(opts.Nth) == 1 { for _, r := range opts.Nth { if r.begin == rangeEllipsis && r.end == rangeEllipsis { opts.Nth = make([]Range, 0) return } } } } // ParseOptions parses command-line options func ParseOptions() *Options { opts := defaultOptions() // Options from Env var words, _ := shellwords.Parse(os.Getenv("FZF_DEFAULT_OPTS")) if len(words) > 0 { parseOptions(opts, words) } // Options from command-line arguments parseOptions(opts, os.Args[1:]) postProcessOptions(opts) return opts }