// 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)
// Filtering mode
if opts.Filter != nil {
if opts.PrintQuery {
fmt.Println(*opts.Filter)
}
pattern := patternBuilder([]rune(*opts.Filter))
found := false
if streamingFilter {
reader := Reader{
func(runes []byte) bool {
item := chunkList.trans(runes, 0)
if item != nil && pattern.MatchItem(item) {
fmt.Println(string(item.text))
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++ {
fmt.Println(merger.Get(i).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 {
fmt.Println(opts.Query)
}
if len(opts.Expect) > 0 {
fmt.Println()
}
for i := 0; i < count; i++ {
fmt.Println(val.Get(i).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)
}
}
}
// 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,
pattern: pattern})
for i := 0; i < merger.Length(); i++ {
fmt.Println(merger.Get(i).AsString())
}
}
os.Exit(0)
}
// 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)
case EvtSearchNew:
snapshot, _ := chunkList.Snapshot()
matcher.Reset(snapshot, terminal.Input(), true, !reading)
delay = false
case EvtSearchProgress:
switch val := value.(type) {
case float32:
terminal.UpdateProgress(val)
}
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 {
fmt.Println(opts.Query)
}
for i := 0; i < count; i++ {
fmt.Println(val.Get(i).AsString())
}
os.Exit(0)
}
deferred = false
terminal.startChan <- true
}
}
terminal.UpdateList(val)
}
}
}
})
if delay && reading {
dur := util.DurWithin(
time.Duration(ticks)*coordinatorDelayStep,
0, coordinatorDelayMax)
time.Sleep(dur)
}
}
}