func (t *Terminal) executeCommand(template string, items []*Item) {
command := replacePlaceholder(template, t.ansi, t.delimiter, string(t.input), items)
cmd := util.ExecCommand(command)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
C.Endwin()
cmd.Run()
t.refresh()
}
func executeCommand(template string, replacement string) {
command := strings.Replace(template, "{}", replacement, -1)
cmd := util.ExecCommand(command)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
C.Endwin()
cmd.Run()
C.Refresh()
}
func (t *Terminal) executeCommand(template string, items []*Item) {
command := replacePlaceholder(template, t.ansi, t.delimiter, string(t.input), items)
cmd := util.ExecCommand(command)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
tui.Pause()
cmd.Run()
if tui.Resume() {
t.printAll()
}
t.refresh()
}
func (r *Reader) readFromCommand(cmd string) {
listCommand := util.ExecCommand(cmd)
out, err := listCommand.StdoutPipe()
if err != nil {
return
}
err = listCommand.Start()
if err != nil {
return
}
defer listCommand.Wait()
r.feed(out)
}
// Loop is called to start Terminal I/O
func (t *Terminal) Loop() {
// prof := profile.Start(profile.ProfilePath("/tmp/"))
<-t.startChan
{ // Late initialization
intChan := make(chan os.Signal, 1)
signal.Notify(intChan, os.Interrupt, os.Kill, syscall.SIGTERM)
go func() {
<-intChan
t.reqBox.Set(reqQuit, nil)
}()
resizeChan := make(chan os.Signal, 1)
notifyOnResize(resizeChan) // Non-portable
go func() {
for {
<-resizeChan
t.reqBox.Set(reqRedraw, nil)
}
}()
t.mutex.Lock()
t.initFunc()
t.resizeWindows()
t.printPrompt()
t.placeCursor()
t.refresh()
t.printInfo()
t.printHeader()
t.mutex.Unlock()
go func() {
timer := time.NewTimer(t.initDelay)
<-timer.C
t.reqBox.Set(reqRefresh, nil)
}()
// Keep the spinner spinning
go func() {
for {
t.mutex.Lock()
reading := t.reading
t.mutex.Unlock()
if !reading {
break
}
time.Sleep(spinnerDuration)
t.reqBox.Set(reqInfo, nil)
}
}()
}
if t.hasPreviewWindow() {
go func() {
for {
var request *Item
t.previewBox.Wait(func(events *util.Events) {
for req, value := range *events {
switch req {
case reqPreviewEnqueue:
request = value.(*Item)
}
}
events.Clear()
})
if request != nil {
command := replacePlaceholder(t.preview.command,
t.ansi, t.delimiter, string(t.input), []*Item{request})
cmd := util.ExecCommand(command)
out, _ := cmd.CombinedOutput()
t.reqBox.Set(reqPreviewDisplay, string(out))
} else {
t.reqBox.Set(reqPreviewDisplay, "")
}
}
}()
}
exit := func(code int) {
if code <= exitNoMatch && t.history != nil {
t.history.append(string(t.input))
}
// prof.Stop()
os.Exit(code)
}
go func() {
var focused *Item
for {
t.reqBox.Wait(func(events *util.Events) {
defer events.Clear()
t.mutex.Lock()
for req, value := range *events {
switch req {
case reqPrompt:
t.printPrompt()
if t.inlineInfo {
t.printInfo()
}
case reqInfo:
t.printInfo()
case reqList:
t.printList()
cnt := t.merger.Length()
var currentFocus *Item
if cnt > 0 && cnt > t.cy {
currentFocus = t.currentItem()
} else {
currentFocus = nil
}
if currentFocus != focused {
focused = currentFocus
if t.isPreviewEnabled() {
t.previewBox.Set(reqPreviewEnqueue, focused)
}
}
case reqJump:
if t.merger.Length() == 0 {
t.jumping = jumpDisabled
}
t.printList()
case reqHeader:
t.printHeader()
case reqRefresh:
t.suppress = false
case reqRedraw:
tui.Clear()
tui.Refresh()
t.printAll()
case reqClose:
tui.Close()
if t.output() {
exit(exitOk)
}
exit(exitNoMatch)
case reqPreviewDisplay:
t.previewer.text = value.(string)
t.previewer.lines = strings.Count(t.previewer.text, "\n")
t.previewer.offset = 0
t.printPreview()
case reqPreviewRefresh:
t.printPreview()
case reqPrintQuery:
tui.Close()
t.printer(string(t.input))
exit(exitOk)
case reqQuit:
tui.Close()
exit(exitInterrupt)
}
}
t.placeCursor()
t.mutex.Unlock()
})
t.refresh()
}
}()
looping := true
for looping {
event := tui.GetChar()
t.mutex.Lock()
previousInput := t.input
events := []util.EventType{reqPrompt}
req := func(evts ...util.EventType) {
for _, event := range evts {
events = append(events, event)
if event == reqClose || event == reqQuit {
looping = false
}
}
}
selectItem := func(item *Item) bool {
if _, found := t.selected[item.Index()]; !found {
t.selected[item.Index()] = selectedItem{time.Now(), item}
return true
}
return false
}
toggleY := func(y int) {
item := t.merger.Get(y).item
if !selectItem(item) {
delete(t.selected, item.Index())
}
}
toggle := func() {
if t.cy < t.merger.Length() {
toggleY(t.cy)
req(reqInfo)
}
}
scrollPreview := func(amount int) {
t.previewer.offset = util.Constrain(
t.previewer.offset+amount, 0, t.previewer.lines-1)
req(reqPreviewRefresh)
}
for key, ret := range t.expect {
if keyMatch(key, event) {
t.pressed = ret
t.reqBox.Set(reqClose, nil)
t.mutex.Unlock()
return
}
}
var doAction func(actionType, int) bool
doAction = func(action actionType, mapkey int) bool {
switch action {
case actIgnore:
case actExecute:
if t.cy >= 0 && t.cy < t.merger.Length() {
t.executeCommand(t.execmap[mapkey], []*Item{t.currentItem()})
}
case actExecuteMulti:
if len(t.selected) > 0 {
sels := make([]*Item, len(t.selected))
for i, sel := range t.sortSelected() {
sels[i] = sel.item
}
t.executeCommand(t.execmap[mapkey], sels)
} else {
return doAction(actExecute, mapkey)
}
case actInvalid:
t.mutex.Unlock()
return false
case actTogglePreview:
if t.hasPreviewWindow() {
t.previewer.enabled = !t.previewer.enabled
t.resizeWindows()
cnt := t.merger.Length()
if t.previewer.enabled && cnt > 0 && cnt > t.cy {
t.previewBox.Set(reqPreviewEnqueue, t.currentItem())
}
req(reqList, reqInfo, reqHeader)
}
case actToggleSort:
t.sort = !t.sort
t.eventBox.Set(EvtSearchNew, t.sort)
t.mutex.Unlock()
return false
case actPreviewUp:
if t.isPreviewEnabled() {
scrollPreview(-1)
}
case actPreviewDown:
if t.isPreviewEnabled() {
scrollPreview(1)
}
case actPreviewPageUp:
if t.isPreviewEnabled() {
scrollPreview(-t.pwindow.Height)
}
case actPreviewPageDown:
if t.isPreviewEnabled() {
scrollPreview(t.pwindow.Height)
}
case actBeginningOfLine:
t.cx = 0
case actBackwardChar:
if t.cx > 0 {
t.cx--
}
case actPrintQuery:
req(reqPrintQuery)
case actAbort:
req(reqQuit)
case actDeleteChar:
t.delChar()
case actDeleteCharEOF:
if !t.delChar() && t.cx == 0 {
req(reqQuit)
}
case actEndOfLine:
t.cx = len(t.input)
case actCancel:
if len(t.input) == 0 {
req(reqQuit)
} else {
t.yanked = t.input
t.input = []rune{}
t.cx = 0
}
case actForwardChar:
if t.cx < len(t.input) {
t.cx++
}
case actBackwardDeleteChar:
if t.cx > 0 {
t.input = append(t.input[:t.cx-1], t.input[t.cx:]...)
t.cx--
}
case actSelectAll:
if t.multi {
for i := 0; i < t.merger.Length(); i++ {
item := t.merger.Get(i).item
selectItem(item)
}
req(reqList, reqInfo)
}
case actDeselectAll:
if t.multi {
for i := 0; i < t.merger.Length(); i++ {
item := t.merger.Get(i)
delete(t.selected, item.Index())
}
req(reqList, reqInfo)
}
case actToggle:
if t.multi && t.merger.Length() > 0 {
toggle()
req(reqList)
}
case actToggleAll:
if t.multi {
for i := 0; i < t.merger.Length(); i++ {
toggleY(i)
}
req(reqList, reqInfo)
}
case actToggleIn:
if t.reverse {
return doAction(actToggleUp, mapkey)
}
return doAction(actToggleDown, mapkey)
case actToggleOut:
if t.reverse {
return doAction(actToggleDown, mapkey)
}
return doAction(actToggleUp, mapkey)
case actToggleDown:
if t.multi && t.merger.Length() > 0 {
toggle()
t.vmove(-1)
req(reqList)
}
case actToggleUp:
if t.multi && t.merger.Length() > 0 {
toggle()
t.vmove(1)
req(reqList)
}
case actDown:
t.vmove(-1)
req(reqList)
case actUp:
t.vmove(1)
req(reqList)
case actAccept:
req(reqClose)
case actClearScreen:
req(reqRedraw)
case actUnixLineDiscard:
if t.cx > 0 {
t.yanked = copySlice(t.input[:t.cx])
t.input = t.input[t.cx:]
t.cx = 0
}
case actUnixWordRubout:
if t.cx > 0 {
t.rubout("\\s\\S")
}
case actBackwardKillWord:
if t.cx > 0 {
t.rubout("[^[:alnum:]][[:alnum:]]")
}
case actYank:
suffix := copySlice(t.input[t.cx:])
t.input = append(append(t.input[:t.cx], t.yanked...), suffix...)
t.cx += len(t.yanked)
case actPageUp:
t.vmove(t.maxItems() - 1)
req(reqList)
case actPageDown:
t.vmove(-(t.maxItems() - 1))
req(reqList)
case actJump:
t.jumping = jumpEnabled
req(reqJump)
case actJumpAccept:
t.jumping = jumpAcceptEnabled
req(reqJump)
case actBackwardWord:
t.cx = findLastMatch("[^[:alnum:]][[:alnum:]]", string(t.input[:t.cx])) + 1
case actForwardWord:
t.cx += findFirstMatch("[[:alnum:]][^[:alnum:]]|(.$)", string(t.input[t.cx:])) + 1
case actKillWord:
ncx := t.cx +
findFirstMatch("[[:alnum:]][^[:alnum:]]|(.$)", string(t.input[t.cx:])) + 1
if ncx > t.cx {
t.yanked = copySlice(t.input[t.cx:ncx])
t.input = append(t.input[:t.cx], t.input[ncx:]...)
}
case actKillLine:
if t.cx < len(t.input) {
t.yanked = copySlice(t.input[t.cx:])
t.input = t.input[:t.cx]
}
case actRune:
prefix := copySlice(t.input[:t.cx])
t.input = append(append(prefix, event.Char), t.input[t.cx:]...)
t.cx++
case actPreviousHistory:
if t.history != nil {
t.history.override(string(t.input))
t.input = []rune(t.history.previous())
t.cx = len(t.input)
}
case actNextHistory:
if t.history != nil {
t.history.override(string(t.input))
t.input = []rune(t.history.next())
t.cx = len(t.input)
}
case actMouse:
me := event.MouseEvent
mx, my := me.X, me.Y
if me.S != 0 {
// Scroll
if t.window.Enclose(my, mx) && t.merger.Length() > 0 {
if t.multi && me.Mod {
toggle()
}
t.vmove(me.S)
req(reqList)
} else if t.isPreviewEnabled() && t.pwindow.Enclose(my, mx) {
scrollPreview(-me.S)
}
} else if t.window.Enclose(my, mx) {
mx -= t.window.Left
my -= t.window.Top
mx = util.Constrain(mx-displayWidth([]rune(t.prompt)), 0, len(t.input))
if !t.reverse {
my = t.window.Height - my - 1
}
min := 2 + len(t.header)
if t.inlineInfo {
min--
}
if me.Double {
// Double-click
if my >= min {
if t.vset(t.offset+my-min) && t.cy < t.merger.Length() {
return doAction(t.keymap[tui.DoubleClick], tui.DoubleClick)
}
}
} else if me.Down {
if my == 0 && mx >= 0 {
// Prompt
t.cx = mx
} else if my >= min {
// List
if t.vset(t.offset+my-min) && t.multi && me.Mod {
toggle()
}
req(reqList)
}
}
}
}
return true
}
changed := false
mapkey := event.Type
if t.jumping == jumpDisabled {
action := t.keymap[mapkey]
if mapkey == tui.Rune {
mapkey = int(event.Char) + int(tui.AltZ)
if act, prs := t.keymap[mapkey]; prs {
action = act
}
}
if !doAction(action, mapkey) {
continue
}
// Truncate the query if it's too long
if len(t.input) > maxPatternLength {
t.input = t.input[:maxPatternLength]
t.cx = util.Constrain(t.cx, 0, maxPatternLength)
}
changed = string(previousInput) != string(t.input)
} else {
if mapkey == tui.Rune {
if idx := strings.IndexRune(t.jumpLabels, event.Char); idx >= 0 && idx < t.maxItems() && idx < t.merger.Length() {
t.cy = idx + t.offset
if t.jumping == jumpAcceptEnabled {
req(reqClose)
}
}
}
t.jumping = jumpDisabled
req(reqList)
}
t.mutex.Unlock() // Must be unlocked before touching reqBox
if changed {
t.eventBox.Set(EvtSearchNew, t.sort)
}
for _, event := range events {
t.reqBox.Set(event, nil)
}
}
}
