// 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)
}}
}
func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
startedAt := time.Now()
numChunks := len(request.chunks)
if numChunks == 0 {
return EmptyMerger, false
}
pattern := request.pattern
if pattern.IsEmpty() {
return PassMerger(&request.chunks, m.tac), false
}
cancelled := util.NewAtomicBool(false)
slices := m.sliceChunks(request.chunks)
numSlices := len(slices)
resultChan := make(chan partialResult, numSlices)
countChan := make(chan int, numChunks)
waitGroup := sync.WaitGroup{}
for idx, chunks := range slices {
waitGroup.Add(1)
if m.slab[idx] == nil {
m.slab[idx] = util.MakeSlab(slab16Size, slab32Size)
}
go func(idx int, slab *util.Slab, chunks []*Chunk) {
defer func() { waitGroup.Done() }()
count := 0
allMatches := make([][]*Result, len(chunks))
for idx, chunk := range chunks {
matches := request.pattern.Match(chunk, slab)
allMatches[idx] = matches
count += len(matches)
if cancelled.Get() {
return
}
countChan <- len(matches)
}
sliceMatches := make([]*Result, 0, count)
for _, matches := range allMatches {
sliceMatches = append(sliceMatches, matches...)
}
if m.sort {
if m.tac {
sort.Sort(ByRelevanceTac(sliceMatches))
} else {
sort.Sort(ByRelevance(sliceMatches))
}
}
resultChan <- partialResult{idx, sliceMatches}
}(idx, m.slab[idx], chunks)
}
wait := func() bool {
cancelled.Set(true)
waitGroup.Wait()
return true
}
count := 0
matchCount := 0
for matchesInChunk := range countChan {
count++
matchCount += matchesInChunk
if count == numChunks {
break
}
if m.reqBox.Peek(reqReset) {
return nil, wait()
}
if time.Now().Sub(startedAt) > progressMinDuration {
m.eventBox.Set(EvtSearchProgress, float32(count)/float32(numChunks))
}
}
partialResults := make([][]*Result, numSlices)
for _ = range slices {
partialResult := <-resultChan
partialResults[partialResult.index] = partialResult.matches
}
return NewMerger(pattern, partialResults, m.sort, m.tac), false
}
func init() {
slab = util.MakeSlab(slab16Size, slab32Size)
}
// Run starts fzf
func Run(opts *Options) {
sort := opts.Sort > 0
sortCriteria = opts.Criteria
if opts.Version {
fmt.Println(version)
os.Exit(exitOk)
}
// Event channel
eventBox := util.NewEventBox()
// ANSI code processor
ansiProcessor := func(data []byte) (util.Chars, *[]ansiOffset) {
return util.ToChars(data), nil
}
ansiProcessorRunes := func(data []rune) (util.Chars, *[]ansiOffset) {
return util.RunesToChars(data), nil
}
if opts.Ansi {
if opts.Theme != nil {
var state *ansiState
ansiProcessor = func(data []byte) (util.Chars, *[]ansiOffset) {
trimmed, offsets, newState := extractColor(string(data), state, nil)
state = newState
return util.RunesToChars([]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) (util.Chars, *[]ansiOffset) {
trimmed, _, _ := extractColor(string(data), nil, nil)
return util.RunesToChars([]rune(trimmed)), nil
}
}
ansiProcessorRunes = func(data []rune) (util.Chars, *[]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
}
chars, colors := ansiProcessor(data)
return &Item{
index: int32(index),
text: chars,
colors: colors}
})
} else {
chunkList = NewChunkList(func(data []byte, index int) *Item {
tokens := Tokenize(util.ToChars(data), opts.Delimiter)
trans := Transform(tokens, opts.WithNth)
if len(header) < opts.HeaderLines {
header = append(header, string(joinTokens(trans)))
eventBox.Set(EvtHeader, header)
return nil
}
textRunes := joinTokens(trans)
item := Item{
index: int32(index),
origText: &data,
colors: nil}
trimmed, colors := ansiProcessorRunes(textRunes)
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
forward := true
for _, cri := range opts.Criteria[1:] {
if cri == byEnd {
forward = false
break
}
if cri == byBegin {
break
}
}
patternBuilder := func(runes []rune) *Pattern {
return BuildPattern(
opts.Fuzzy, opts.FuzzyAlgo, opts.Extended, opts.Case, forward,
opts.Filter == nil, opts.Nth, opts.Delimiter, runes)
}
matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox)
// Filtering mode
if opts.Filter != nil {
if opts.PrintQuery {
opts.Printer(*opts.Filter)
}
pattern := patternBuilder([]rune(*opts.Filter))
found := false
if streamingFilter {
slab := util.MakeSlab(slab16Size, slab32Size)
reader := Reader{
func(runes []byte) bool {
item := chunkList.trans(runes, 0)
if item != nil {
if result, _, _ := pattern.MatchItem(item, false, slab); result != nil {
opts.Printer(item.text.ToString())
found = true
}
}
return false
}, eventBox, opts.ReadZero}
reader.ReadSource()
} else {
eventBox.Unwatch(EvtReadNew)
eventBox.WaitFor(EvtReadFin)
snapshot, _ := chunkList.Snapshot()
merger, _ := matcher.scan(MatchRequest{
chunks: snapshot,
pattern: pattern})
for i := 0; i < merger.Length(); i++ {
opts.Printer(merger.Get(i).item.AsString(opts.Ansi))
found = true
}
}
if found {
os.Exit(exitOk)
}
os.Exit(exitNoMatch)
}
// Synchronous search
if opts.Sync {
eventBox.Unwatch(EvtReadNew)
eventBox.WaitFor(EvtReadFin)
}
// Go interactive
go matcher.Loop()
// Terminal I/O
terminal := NewTerminal(opts, eventBox)
deferred := opts.Select1 || opts.Exit0
go terminal.Loop()
if !deferred {
terminal.startChan <- true
}
// Event coordination
reading := true
ticks := 0
eventBox.Watch(EvtReadNew)
for {
delay := true
ticks++
eventBox.Wait(func(events *util.Events) {
defer events.Clear()
for evt, value := range *events {
switch evt {
case EvtReadNew, EvtReadFin:
reading = reading && evt == EvtReadNew
snapshot, count := chunkList.Snapshot()
terminal.UpdateCount(count, !reading)
matcher.Reset(snapshot, terminal.Input(), false, !reading, sort)
case EvtSearchNew:
switch val := value.(type) {
case bool:
sort = val
}
snapshot, _ := chunkList.Snapshot()
matcher.Reset(snapshot, terminal.Input(), true, !reading, sort)
delay = false
case EvtSearchProgress:
switch val := value.(type) {
case float32:
terminal.UpdateProgress(val)
}
case EvtHeader:
terminal.UpdateHeader(value.([]string))
case EvtSearchFin:
switch val := value.(type) {
case *Merger:
if deferred {
count := val.Length()
if opts.Select1 && count > 1 || opts.Exit0 && !opts.Select1 && count > 0 {
deferred = false
terminal.startChan <- true
} else if val.final {
if opts.Exit0 && count == 0 || opts.Select1 && count == 1 {
if opts.PrintQuery {
opts.Printer(opts.Query)
}
if len(opts.Expect) > 0 {
opts.Printer("")
}
for i := 0; i < count; i++ {
opts.Printer(val.Get(i).item.AsString(opts.Ansi))
}
if count > 0 {
os.Exit(exitOk)
}
os.Exit(exitNoMatch)
}
deferred = false
terminal.startChan <- true
}
}
terminal.UpdateList(val)
}
}
}
})
if delay && reading {
dur := util.DurWithin(
time.Duration(ticks)*coordinatorDelayStep,
0, coordinatorDelayMax)
time.Sleep(dur)
}
}
}
// 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() }}
}