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This commit is contained in:
MZI
2018-10-13 21:45:53 +08:00
parent bf5480b2df
commit db6c162b03
451 changed files with 139580 additions and 42578 deletions
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192
vendor/github.com/peterh/liner/line.go generated vendored
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@ -3,10 +3,12 @@
package liner
import (
"bufio"
"container/ring"
"errors"
"fmt"
"io"
"os"
"strings"
"unicode"
"unicode/utf8"
@ -90,11 +92,15 @@ const (
)
func (s *State) refresh(prompt []rune, buf []rune, pos int) error {
if s.columns == 0 {
return ErrInternal
}
s.needRefresh = false
if s.multiLineMode {
return s.refreshMultiLine(prompt, buf, pos)
} else {
return s.refreshSingleLine(prompt, buf, pos)
}
return s.refreshSingleLine(prompt, buf, pos)
}
func (s *State) refreshSingleLine(prompt []rune, buf []rune, pos int) error {
@ -351,8 +357,8 @@ func (s *State) tabComplete(p []rune, line []rune, pos int) ([]rune, int, interf
}
hl := utf8.RuneCountInString(head)
if len(list) == 1 {
s.refresh(p, []rune(head+list[0]+tail), hl+utf8.RuneCountInString(list[0]))
return []rune(head + list[0] + tail), hl + utf8.RuneCountInString(list[0]), rune(esc), nil
err := s.refresh(p, []rune(head+list[0]+tail), hl+utf8.RuneCountInString(list[0]))
return []rune(head + list[0] + tail), hl + utf8.RuneCountInString(list[0]), rune(esc), err
}
direction := tabForward
@ -366,7 +372,10 @@ func (s *State) tabComplete(p []rune, line []rune, pos int) ([]rune, int, interf
if err != nil {
return line, pos, rune(esc), err
}
s.refresh(p, []rune(head+pick+tail), hl+utf8.RuneCountInString(pick))
err = s.refresh(p, []rune(head+pick+tail), hl+utf8.RuneCountInString(pick))
if err != nil {
return line, pos, rune(esc), err
}
next, err := s.readNext()
if err != nil {
@ -387,14 +396,15 @@ func (s *State) tabComplete(p []rune, line []rune, pos int) ([]rune, int, interf
}
return []rune(head + pick + tail), hl + utf8.RuneCountInString(pick), next, nil
}
// Not reached
return line, pos, rune(esc), nil
}
// reverse intelligent search, implements a bash-like history search.
func (s *State) reverseISearch(origLine []rune, origPos int) ([]rune, int, interface{}, error) {
p := "(reverse-i-search)`': "
s.refresh([]rune(p), origLine, origPos)
err := s.refresh([]rune(p), origLine, origPos)
if err != nil {
return origLine, origPos, rune(esc), err
}
line := []rune{}
pos := 0
@ -480,7 +490,10 @@ func (s *State) reverseISearch(origLine []rune, origPos int) ([]rune, int, inter
case action:
return []rune(foundLine), foundPos, next, err
}
s.refresh(getLine())
err = s.refresh(getLine())
if err != nil {
return []rune(foundLine), foundPos, rune(esc), err
}
}
}
@ -537,7 +550,10 @@ func (s *State) yank(p []rune, text []rune, pos int) ([]rune, int, interface{},
line = append(line, lineEnd...)
pos = len(lineStart) + len(value)
s.refresh(p, line, pos)
err := s.refresh(p, line, pos)
if err != nil {
return line, pos, 0, err
}
next, err := s.readNext()
if err != nil {
@ -556,8 +572,6 @@ func (s *State) yank(p []rune, text []rune, pos int) ([]rune, int, interface{},
}
}
}
return line, pos, esc, nil
}
// Prompt displays p and returns a line of user input, not including a trailing
@ -573,9 +587,19 @@ func (s *State) Prompt(prompt string) (string, error) {
// including a trailing newline character. An io.EOF error is returned if the user
// signals end-of-file by pressing Ctrl-D.
func (s *State) PromptWithSuggestion(prompt string, text string, pos int) (string, error) {
for _, r := range prompt {
if unicode.Is(unicode.C, r) {
return "", ErrInvalidPrompt
}
}
if s.inputRedirected || !s.terminalSupported {
return s.promptUnsupported(prompt)
}
p := []rune(prompt)
const minWorkingSpace = 10
if s.columns < countGlyphs(p)+minWorkingSpace {
return s.tooNarrow(prompt)
}
if s.outputRedirected {
return "", ErrNotTerminalOutput
}
@ -584,11 +608,11 @@ func (s *State) PromptWithSuggestion(prompt string, text string, pos int) (strin
defer s.historyMutex.RUnlock()
fmt.Print(prompt)
p := []rune(prompt)
var line = []rune(text)
historyEnd := ""
prefixHistory := s.getHistoryByPrefix(string(line))
historyPos := len(prefixHistory)
var historyPrefix []string
historyPos := 0
historyStale := true
historyAction := false // used to mark history related actions
killAction := 0 // used to mark kill related actions
@ -598,7 +622,10 @@ func (s *State) PromptWithSuggestion(prompt string, text string, pos int) (strin
pos = len(text)
}
if len(line) > 0 {
s.refresh(p, line, pos)
err := s.refresh(p, line, pos)
if err != nil {
return "", err
}
}
restart:
@ -621,6 +648,12 @@ mainLoop:
case rune:
switch v {
case cr, lf:
if s.needRefresh {
err := s.refresh(p, line, pos)
if err != nil {
return "", err
}
}
if s.multiLineMode {
s.resetMultiLine(p, line, pos)
}
@ -628,21 +661,21 @@ mainLoop:
break mainLoop
case ctrlA: // Start of line
pos = 0
s.refresh(p, line, pos)
s.needRefresh = true
case ctrlE: // End of line
pos = len(line)
s.refresh(p, line, pos)
s.needRefresh = true
case ctrlB: // left
if pos > 0 {
pos -= len(getSuffixGlyphs(line[:pos], 1))
s.refresh(p, line, pos)
s.needRefresh = true
} else {
fmt.Print(beep)
}
case ctrlF: // right
if pos < len(line) {
pos += len(getPrefixGlyphs(line[pos:], 1))
s.refresh(p, line, pos)
s.needRefresh = true
} else {
fmt.Print(beep)
}
@ -661,7 +694,7 @@ mainLoop:
} else {
n := len(getPrefixGlyphs(line[pos:], 1))
line = append(line[:pos], line[pos+n:]...)
s.refresh(p, line, pos)
s.needRefresh = true
}
case ctrlK: // delete remainder of line
if pos >= len(line) {
@ -675,32 +708,42 @@ mainLoop:
killAction = 2 // Mark that there was a kill action
line = line[:pos]
s.refresh(p, line, pos)
s.needRefresh = true
}
case ctrlP: // up
historyAction = true
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPos = len(historyPrefix)
historyStale = false
}
if historyPos > 0 {
if historyPos == len(prefixHistory) {
if historyPos == len(historyPrefix) {
historyEnd = string(line)
}
historyPos--
line = []rune(prefixHistory[historyPos])
line = []rune(historyPrefix[historyPos])
pos = len(line)
s.refresh(p, line, pos)
s.needRefresh = true
} else {
fmt.Print(beep)
}
case ctrlN: // down
historyAction = true
if historyPos < len(prefixHistory) {
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPos = len(historyPrefix)
historyStale = false
}
if historyPos < len(historyPrefix) {
historyPos++
if historyPos == len(prefixHistory) {
if historyPos == len(historyPrefix) {
line = []rune(historyEnd)
} else {
line = []rune(prefixHistory[historyPos])
line = []rune(historyPrefix[historyPos])
}
pos = len(line)
s.refresh(p, line, pos)
s.needRefresh = true
} else {
fmt.Print(beep)
}
@ -718,11 +761,11 @@ mainLoop:
copy(line[pos-len(prev):], next)
copy(line[pos-len(prev)+len(next):], scratch)
pos += len(next)
s.refresh(p, line, pos)
s.needRefresh = true
}
case ctrlL: // clear screen
s.eraseScreen()
s.refresh(p, line, pos)
s.needRefresh = true
case ctrlC: // reset
fmt.Println("^C")
if s.multiLineMode {
@ -742,7 +785,7 @@ mainLoop:
n := len(getSuffixGlyphs(line[:pos], 1))
line = append(line[:pos-n], line[pos:]...)
pos -= n
s.refresh(p, line, pos)
s.needRefresh = true
}
case ctrlU: // Erase line before cursor
if killAction > 0 {
@ -754,7 +797,7 @@ mainLoop:
killAction = 2 // Mark that there was some killing
line = line[pos:]
pos = 0
s.refresh(p, line, pos)
s.needRefresh = true
case ctrlW: // Erase word
if pos == 0 {
fmt.Print(beep)
@ -791,13 +834,13 @@ mainLoop:
}
killAction = 2 // Mark that there was some killing
s.refresh(p, line, pos)
s.needRefresh = true
case ctrlY: // Paste from Yank buffer
line, pos, next, err = s.yank(p, line, pos)
goto haveNext
case ctrlR: // Reverse Search
line, pos, next, err = s.reverseISearch(line, pos)
s.refresh(p, line, pos)
s.needRefresh = true
goto haveNext
case tab: // Tab completion
line, pos, next, err = s.tabComplete(p, line, pos)
@ -812,14 +855,16 @@ mainLoop:
case 0, 28, 29, 30, 31:
fmt.Print(beep)
default:
if pos == len(line) && !s.multiLineMode && countGlyphs(p)+countGlyphs(line) < s.columns-1 {
if pos == len(line) && !s.multiLineMode &&
len(p)+len(line) < s.columns*4 && // Avoid countGlyphs on large lines
countGlyphs(p)+countGlyphs(line) < s.columns-1 {
line = append(line, v)
fmt.Printf("%c", v)
pos++
} else {
line = append(line[:pos], append([]rune{v}, line[pos:]...)...)
pos++
s.refresh(p, line, pos)
s.needRefresh = true
}
}
case action:
@ -887,24 +932,34 @@ mainLoop:
}
case up:
historyAction = true
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPos = len(historyPrefix)
historyStale = false
}
if historyPos > 0 {
if historyPos == len(prefixHistory) {
if historyPos == len(historyPrefix) {
historyEnd = string(line)
}
historyPos--
line = []rune(prefixHistory[historyPos])
line = []rune(historyPrefix[historyPos])
pos = len(line)
} else {
fmt.Print(beep)
}
case down:
historyAction = true
if historyPos < len(prefixHistory) {
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPos = len(historyPrefix)
historyStale = false
}
if historyPos < len(historyPrefix) {
historyPos++
if historyPos == len(prefixHistory) {
if historyPos == len(historyPrefix) {
line = []rune(historyEnd)
} else {
line = []rune(prefixHistory[historyPos])
line = []rune(historyPrefix[historyPos])
}
pos = len(line)
} else {
@ -928,11 +983,16 @@ mainLoop:
s.cursorRows = 1
}
}
s.refresh(p, line, pos)
s.needRefresh = true
}
if s.needRefresh && !s.inputWaiting() {
err := s.refresh(p, line, pos)
if err != nil {
return "", err
}
}
if !historyAction {
prefixHistory = s.getHistoryByPrefix(string(line))
historyPos = len(prefixHistory)
historyStale = true
}
if killAction > 0 {
killAction--
@ -944,7 +1004,12 @@ mainLoop:
// PasswordPrompt displays p, and then waits for user input. The input typed by
// the user is not displayed in the terminal.
func (s *State) PasswordPrompt(prompt string) (string, error) {
if !s.terminalSupported {
for _, r := range prompt {
if unicode.Is(unicode.C, r) {
return "", ErrInvalidPrompt
}
}
if !s.terminalSupported || s.columns == 0 {
return "", errors.New("liner: function not supported in this terminal")
}
if s.inputRedirected {
@ -954,6 +1019,12 @@ func (s *State) PasswordPrompt(prompt string) (string, error) {
return "", ErrNotTerminalOutput
}
p := []rune(prompt)
const minWorkingSpace = 1
if s.columns < countGlyphs(p)+minWorkingSpace {
return s.tooNarrow(prompt)
}
defer s.stopPrompt()
restart:
@ -961,7 +1032,6 @@ restart:
s.getColumns()
fmt.Print(prompt)
p := []rune(prompt)
var line []rune
pos := 0
@ -979,6 +1049,12 @@ mainLoop:
case rune:
switch v {
case cr, lf:
if s.needRefresh {
err := s.refresh(p, line, pos)
if err != nil {
return "", err
}
}
if s.multiLineMode {
s.resetMultiLine(p, line, pos)
}
@ -995,7 +1071,10 @@ mainLoop:
s.restartPrompt()
case ctrlL: // clear screen
s.eraseScreen()
s.refresh(p, []rune{}, 0)
err := s.refresh(p, []rune{}, 0)
if err != nil {
return "", err
}
case ctrlH, bs: // Backspace
if pos <= 0 {
fmt.Print(beep)
@ -1031,3 +1110,20 @@ mainLoop:
}
return string(line), nil
}
func (s *State) tooNarrow(prompt string) (string, error) {
// Docker and OpenWRT and etc sometimes return 0 column width
// Reset mode temporarily. Restore baked mode in case the terminal
// is wide enough for the next Prompt attempt.
m, merr := TerminalMode()
s.origMode.ApplyMode()
if merr == nil {
defer m.ApplyMode()
}
if s.r == nil {
// Windows does not always set s.r
s.r = bufio.NewReader(os.Stdin)
defer func() { s.r = nil }()
}
return s.promptUnsupported(prompt)
}