Golang util.NewEventBox函數代碼示例

// NewTerminal returns new Terminal object
func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
	input := []rune(opts.Query)
	return &Terminal{
		inlineInfo: opts.InlineInfo,
		prompt:     opts.Prompt,
		reverse:    opts.Reverse,
		hscroll:    opts.Hscroll,
		cx:         len(input),
		cy:         0,
		offset:     0,
		yanked:     []rune{},
		input:      input,
		multi:      opts.Multi,
		sort:       opts.Sort > 0,
		toggleSort: opts.ToggleSort,
		expect:     opts.Expect,
		keymap:     opts.Keymap,
		execmap:    opts.Execmap,
		pressed:    "",
		printQuery: opts.PrintQuery,
		history:    opts.History,
		cycle:      opts.Cycle,
		reading:    true,
		merger:     EmptyMerger,
		selected:   make(map[uint32]selectedItem),
		reqBox:     util.NewEventBox(),
		eventBox:   eventBox,
		mutex:      sync.Mutex{},
		suppress:   true,
		startChan:  make(chan bool, 1),
		initFunc: func() {
			C.Init(opts.Theme, opts.Black, opts.Mouse)
		}}
}

// NewMatcher returns a new Matcher
func NewMatcher(patternBuilder func([]rune) *Pattern,
	sort bool, tac bool, eventBox *util.EventBox) *Matcher {
	return &Matcher{
		patternBuilder: patternBuilder,
		sort:           sort,
		tac:            tac,
		eventBox:       eventBox,
		reqBox:         util.NewEventBox(),
		partitions:     runtime.NumCPU(),
		mergerCache:    make(map[string]*Merger)}
}

// NewTerminal returns new Terminal object
func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
	input := []rune(opts.Query)
	var header []string
	if opts.Reverse {
		header = opts.Header
	} else {
		header = reverseStringArray(opts.Header)
	}
	_tabStop = opts.Tabstop
	var delay time.Duration
	if opts.Tac {
		delay = initialDelayTac
	} else {
		delay = initialDelay
	}
	return &Terminal{
		initDelay:  delay,
		inlineInfo: opts.InlineInfo,
		prompt:     opts.Prompt,
		reverse:    opts.Reverse,
		hscroll:    opts.Hscroll,
		hscrollOff: opts.HscrollOff,
		cx:         len(input),
		cy:         0,
		offset:     0,
		yanked:     []rune{},
		input:      input,
		multi:      opts.Multi,
		sort:       opts.Sort > 0,
		toggleSort: opts.ToggleSort,
		expect:     opts.Expect,
		keymap:     opts.Keymap,
		execmap:    opts.Execmap,
		pressed:    "",
		printQuery: opts.PrintQuery,
		history:    opts.History,
		margin:     opts.Margin,
		marginInt:  [4]int{0, 0, 0, 0},
		cycle:      opts.Cycle,
		header:     header,
		header0:    header,
		ansi:       opts.Ansi,
		reading:    true,
		merger:     EmptyMerger,
		selected:   make(map[int32]selectedItem),
		reqBox:     util.NewEventBox(),
		eventBox:   eventBox,
		mutex:      sync.Mutex{},
		suppress:   true,
		startChan:  make(chan bool, 1),
		initFunc: func() {
			C.Init(opts.Theme, opts.Black, opts.Mouse)
		}}
}

// NewMatcher returns a new Matcher
func NewMatcher(patternBuilder func([]rune) *Pattern,
	sort bool, tac bool, eventBox *util.EventBox) *Matcher {
	partitions := util.Min(numPartitionsMultiplier*runtime.NumCPU(), maxPartitions)
	return &Matcher{
		patternBuilder: patternBuilder,
		sort:           sort,
		tac:            tac,
		eventBox:       eventBox,
		reqBox:         util.NewEventBox(),
		partitions:     partitions,
		slab:           make([]*util.Slab, partitions),
		mergerCache:    make(map[string]*Merger)}
}

func TestReadFromCommand(t *testing.T) {
	strs := []string{}
	eb := util.NewEventBox()
	reader := Reader{
		pusher:   func(s string) { strs = append(strs, s) },
		eventBox: eb}

	// Check EventBox
	if eb.Peek(EvtReadNew) {
		t.Error("EvtReadNew should not be set yet")
	}

	// Normal command
	reader.readFromCommand(`echo abc && echo def`)
	if len(strs) != 2 || strs[0] != "abc" || strs[1] != "def" {
		t.Errorf("%s", strs)
	}

	// Check EventBox again
	if !eb.Peek(EvtReadNew) {
		t.Error("EvtReadNew should be set yet")
	}

	// Wait should return immediately
	eb.Wait(func(events *util.Events) {
		if _, found := (*events)[EvtReadNew]; !found {
			t.Errorf("%s", events)
		}
		events.Clear()
	})

	// EventBox is cleared
	if eb.Peek(EvtReadNew) {
		t.Error("EvtReadNew should not be set yet")
	}

	// Failing command
	reader.readFromCommand(`no-such-command`)
	strs = []string{}
	if len(strs) > 0 {
		t.Errorf("%s", strs)
	}

	// Check EventBox again
	if eb.Peek(EvtReadNew) {
		t.Error("Command failed. EvtReadNew should be set")
	}
}

// NewTerminal returns new Terminal object
func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
	input := []rune(opts.Query)
	return &Terminal{
		prompt:     opts.Prompt,
		reverse:    opts.Reverse,
		cx:         len(input),
		cy:         0,
		offset:     0,
		yanked:     []rune{},
		input:      input,
		multi:      opts.Multi,
		printQuery: opts.PrintQuery,
		merger:     EmptyMerger,
		selected:   make(map[*string]selectedItem),
		reqBox:     util.NewEventBox(),
		eventBox:   eventBox,
		mutex:      sync.Mutex{},
		suppress:   true,
		startChan:  make(chan bool, 1),
		initFunc: func() {
			C.Init(opts.Color, opts.Color256, opts.Black, opts.Mouse)
		}}
}

// Run starts fzf
func Run(opts *Options) {
	initProcs()

	sort := opts.Sort > 0
	rankTiebreak = opts.Tiebreak

	if opts.Version {
		fmt.Println(version)
		os.Exit(exitOk)
	}

	// Event channel
	eventBox := util.NewEventBox()

	// ANSI code processor
	ansiProcessor := func(data []byte) ([]rune, []ansiOffset) {
		return util.BytesToRunes(data), nil
	}
	ansiProcessorRunes := func(data []rune) ([]rune, []ansiOffset) {
		return data, nil
	}
	if opts.Ansi {
		if opts.Theme != nil {
			var state *ansiState
			ansiProcessor = func(data []byte) ([]rune, []ansiOffset) {
				trimmed, offsets, newState := extractColor(string(data), state)
				state = newState
				return []rune(trimmed), offsets
			}
		} else {
			// When color is disabled but ansi option is given,
			// we simply strip out ANSI codes from the input
			ansiProcessor = func(data []byte) ([]rune, []ansiOffset) {
				trimmed, _, _ := extractColor(string(data), nil)
				return []rune(trimmed), nil
			}
		}
		ansiProcessorRunes = func(data []rune) ([]rune, []ansiOffset) {
			return ansiProcessor([]byte(string(data)))
		}
	}

	// Chunk list
	var chunkList *ChunkList
	header := make([]string, 0, opts.HeaderLines)
	if len(opts.WithNth) == 0 {
		chunkList = NewChunkList(func(data []byte, index int) *Item {
			if len(header) < opts.HeaderLines {
				header = append(header, string(data))
				eventBox.Set(EvtHeader, header)
				return nil
			}
			runes, colors := ansiProcessor(data)
			return &Item{
				text:   runes,
				index:  uint32(index),
				colors: colors,
				rank:   Rank{0, 0, uint32(index)}}
		})
	} else {
		chunkList = NewChunkList(func(data []byte, index int) *Item {
			runes := util.BytesToRunes(data)
			tokens := Tokenize(runes, opts.Delimiter)
			trans := Transform(tokens, opts.WithNth)
			if len(header) < opts.HeaderLines {
				header = append(header, string(joinTokens(trans)))
				eventBox.Set(EvtHeader, header)
				return nil
			}
			item := Item{
				text:     joinTokens(trans),
				origText: &runes,
				index:    uint32(index),
				colors:   nil,
				rank:     Rank{0, 0, uint32(index)}}

			trimmed, colors := ansiProcessorRunes(item.text)
			item.text = trimmed
			item.colors = colors
			return &item
		})
	}

	// Reader
	streamingFilter := opts.Filter != nil && !sort && !opts.Tac && !opts.Sync
	if !streamingFilter {
		reader := Reader{func(data []byte) bool {
			return chunkList.Push(data)
		}, eventBox, opts.ReadZero}
		go reader.ReadSource()
	}

	// Matcher
	patternBuilder := func(runes []rune) *Pattern {
		return BuildPattern(
			opts.Fuzzy, opts.Extended, opts.Case, opts.Tiebreak != byEnd,
			opts.Nth, opts.Delimiter, runes)
	}
	matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox)
//.........這裏部分代碼省略.........

// NewTerminal returns new Terminal object
func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
	input := []rune(opts.Query)
	var header []string
	if opts.Reverse {
		header = opts.Header
	} else {
		header = reverseStringArray(opts.Header)
	}
	_tabStop = opts.Tabstop
	var delay time.Duration
	if opts.Tac {
		delay = initialDelayTac
	} else {
		delay = initialDelay
	}
	var previewBox *util.EventBox
	if len(opts.Preview.command) > 0 {
		previewBox = util.NewEventBox()
	}
	strongAttr := tui.Bold
	if !opts.Bold {
		strongAttr = tui.AttrRegular
	}
	return &Terminal{
		initDelay:  delay,
		inlineInfo: opts.InlineInfo,
		prompt:     opts.Prompt,
		reverse:    opts.Reverse,
		hscroll:    opts.Hscroll,
		hscrollOff: opts.HscrollOff,
		cx:         len(input),
		cy:         0,
		offset:     0,
		yanked:     []rune{},
		input:      input,
		multi:      opts.Multi,
		sort:       opts.Sort > 0,
		toggleSort: opts.ToggleSort,
		delimiter:  opts.Delimiter,
		expect:     opts.Expect,
		keymap:     opts.Keymap,
		execmap:    opts.Execmap,
		pressed:    "",
		printQuery: opts.PrintQuery,
		history:    opts.History,
		margin:     opts.Margin,
		strong:     strongAttr,
		cycle:      opts.Cycle,
		header:     header,
		header0:    header,
		ansi:       opts.Ansi,
		reading:    true,
		jumping:    jumpDisabled,
		jumpLabels: opts.JumpLabels,
		printer:    opts.Printer,
		merger:     EmptyMerger,
		selected:   make(map[int32]selectedItem),
		reqBox:     util.NewEventBox(),
		preview:    opts.Preview,
		previewer:  previewer{"", 0, 0, previewBox != nil && !opts.Preview.hidden},
		previewBox: previewBox,
		eventBox:   eventBox,
		mutex:      sync.Mutex{},
		suppress:   true,
		slab:       util.MakeSlab(slab16Size, slab32Size),
		theme:      opts.Theme,
		startChan:  make(chan bool, 1),
		initFunc: func() {
			tui.Init(opts.Theme, opts.Black, opts.Mouse)
		}}
}

// NewTerminal returns new Terminal object
func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
	input := []rune(opts.Query)
	var header []string
	if opts.Reverse {
		header = opts.Header
	} else {
		header = reverseStringArray(opts.Header)
	}
	var delay time.Duration
	if opts.Tac {
		delay = initialDelayTac
	} else {
		delay = initialDelay
	}
	var previewBox *util.EventBox
	if len(opts.Preview.command) > 0 {
		previewBox = util.NewEventBox()
	}
	strongAttr := tui.Bold
	if !opts.Bold {
		strongAttr = tui.AttrRegular
	}
	var renderer tui.Renderer
	if opts.Height.size > 0 {
		maxHeightFunc := func(termHeight int) int {
			var maxHeight int
			if opts.Height.percent {
				maxHeight = util.Min(termHeight,
					util.Max(int(opts.Height.size*float64(termHeight)/100.0), opts.MinHeight))
			} else {
				maxHeight = util.Min(termHeight, int(opts.Height.size))
			}
			if opts.InlineInfo {
				return util.Max(maxHeight, minHeight-1)
			}
			return util.Max(maxHeight, minHeight)
		}
		renderer = tui.NewLightRenderer(opts.Theme, opts.Black, opts.Mouse, opts.Tabstop, maxHeightFunc)
	} else {
		renderer = tui.NewFullscreenRenderer(opts.Theme, opts.Black, opts.Mouse)
	}
	wordRubout := "[^[:alnum:]][[:alnum:]]"
	wordNext := "[[:alnum:]][^[:alnum:]]|(.$)"
	if opts.FileWord {
		sep := regexp.QuoteMeta(string(os.PathSeparator))
		wordRubout = fmt.Sprintf("%s[^%s]", sep, sep)
		wordNext = fmt.Sprintf("[^%s]%s|(.$)", sep, sep)
	}
	return &Terminal{
		initDelay:  delay,
		inlineInfo: opts.InlineInfo,
		prompt:     opts.Prompt,
		reverse:    opts.Reverse,
		hscroll:    opts.Hscroll,
		hscrollOff: opts.HscrollOff,
		wordRubout: wordRubout,
		wordNext:   wordNext,
		cx:         len(input),
		cy:         0,
		offset:     0,
		yanked:     []rune{},
		input:      input,
		multi:      opts.Multi,
		sort:       opts.Sort > 0,
		toggleSort: opts.ToggleSort,
		delimiter:  opts.Delimiter,
		expect:     opts.Expect,
		keymap:     opts.Keymap,
		execmap:    opts.Execmap,
		pressed:    "",
		printQuery: opts.PrintQuery,
		history:    opts.History,
		margin:     opts.Margin,
		strong:     strongAttr,
		cycle:      opts.Cycle,
		header:     header,
		header0:    header,
		ansi:       opts.Ansi,
		tabstop:    opts.Tabstop,
		reading:    true,
		jumping:    jumpDisabled,
		jumpLabels: opts.JumpLabels,
		printer:    opts.Printer,
		merger:     EmptyMerger,
		selected:   make(map[int32]selectedItem),
		reqBox:     util.NewEventBox(),
		preview:    opts.Preview,
		previewer:  previewer{"", 0, 0, previewBox != nil && !opts.Preview.hidden},
		previewBox: previewBox,
		eventBox:   eventBox,
		mutex:      sync.Mutex{},
		suppress:   true,
		slab:       util.MakeSlab(slab16Size, slab32Size),
		theme:      opts.Theme,
		startChan:  make(chan bool, 1),
		tui:        renderer,
		initFunc:   func() { renderer.Init() }}
}

// Run starts fzf
func Run(options *Options) {
	initProcs()

	opts := ParseOptions()

	if opts.Version {
		fmt.Println(Version)
		os.Exit(0)
	}

	// Event channel
	eventBox := util.NewEventBox()

	// ANSI code processor
	ansiProcessor := func(data *string) (*string, []ansiOffset) {
		// By default, we do nothing
		return data, nil
	}
	if opts.Ansi {
		if opts.Color {
			ansiProcessor = func(data *string) (*string, []ansiOffset) {
				return extractColor(data)
			}
		} else {
			// When color is disabled but ansi option is given,
			// we simply strip out ANSI codes from the input
			ansiProcessor = func(data *string) (*string, []ansiOffset) {
				trimmed, _ := extractColor(data)
				return trimmed, nil
			}
		}
	}

	// Chunk list
	var chunkList *ChunkList
	if len(opts.WithNth) == 0 {
		chunkList = NewChunkList(func(data *string, index int) *Item {
			data, colors := ansiProcessor(data)
			return &Item{
				text:   data,
				index:  uint32(index),
				colors: colors,
				rank:   Rank{0, 0, uint32(index)}}
		})
	} else {
		chunkList = NewChunkList(func(data *string, index int) *Item {
			tokens := Tokenize(data, opts.Delimiter)
			item := Item{
				text:     Transform(tokens, opts.WithNth).whole,
				origText: data,
				index:    uint32(index),
				colors:   nil,
				rank:     Rank{0, 0, uint32(index)}}

			trimmed, colors := ansiProcessor(item.text)
			item.text = trimmed
			item.colors = colors
			return &item
		})
	}

	// Reader
	streamingFilter := opts.Filter != nil && opts.Sort == 0 && !opts.Tac && !opts.Sync
	if !streamingFilter {
		reader := Reader{func(str string) { chunkList.Push(str) }, eventBox}
		go reader.ReadSource()
	}

	// Matcher
	patternBuilder := func(runes []rune) *Pattern {
		return BuildPattern(
			opts.Mode, opts.Case, opts.Nth, opts.Delimiter, runes)
	}
	matcher := NewMatcher(patternBuilder, opts.Sort > 0, opts.Tac, eventBox)

	// Filtering mode
	if opts.Filter != nil {
		if opts.PrintQuery {
			fmt.Println(*opts.Filter)
		}

		pattern := patternBuilder([]rune(*opts.Filter))

		if streamingFilter {
			reader := Reader{
				func(str string) {
					item := chunkList.trans(&str, 0)
					if pattern.MatchItem(item) {
						fmt.Println(*item.text)
					}
				}, eventBox}
			reader.ReadSource()
		} else {
			eventBox.Unwatch(EvtReadNew)
			eventBox.WaitFor(EvtReadFin)

			snapshot, _ := chunkList.Snapshot()
			merger, _ := matcher.scan(MatchRequest{
				chunks:  snapshot,
//.........這裏部分代碼省略.........