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-rw-r--r--vendor/github.com/MichaelMure/gocui/view.go504
1 files changed, 0 insertions, 504 deletions
diff --git a/vendor/github.com/MichaelMure/gocui/view.go b/vendor/github.com/MichaelMure/gocui/view.go
deleted file mode 100644
index d7943497..00000000
--- a/vendor/github.com/MichaelMure/gocui/view.go
+++ /dev/null
@@ -1,504 +0,0 @@
-// Copyright 2014 The gocui Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package gocui
-
-import (
- "bytes"
- "errors"
- "io"
- "strings"
-
- "github.com/mattn/go-runewidth"
- "github.com/nsf/termbox-go"
-)
-
-// A View is a window. It maintains its own internal buffer and cursor
-// position.
-type View struct {
- name string
- x0, y0, x1, y1 int
- ox, oy int
- cx, cy int
- lines [][]cell
- readOffset int
- readCache string
-
- tainted bool // marks if the viewBuffer must be updated
- viewLines []viewLine // internal representation of the view's buffer
-
- ei *escapeInterpreter // used to decode ESC sequences on Write
-
- // BgColor and FgColor allow to configure the background and foreground
- // colors of the View.
- BgColor, FgColor Attribute
-
- // SelBgColor and SelFgColor are used to configure the background and
- // foreground colors of the selected line, when it is highlighted.
- SelBgColor, SelFgColor Attribute
-
- // If Editable is true, keystrokes will be added to the view's internal
- // buffer at the cursor position.
- Editable bool
-
- // Editor allows to define the editor that manages the edition mode,
- // including keybindings or cursor behaviour. DefaultEditor is used by
- // default.
- Editor Editor
-
- // Overwrite enables or disables the overwrite mode of the view.
- Overwrite bool
-
- // If Highlight is true, Sel{Bg,Fg}Colors will be used
- // for the line under the cursor position.
- Highlight bool
-
- // If Frame is true, a border will be drawn around the view.
- Frame bool
-
- // If Wrap is true, the content that is written to this View is
- // automatically wrapped when it is longer than its width. If true the
- // view's x-origin will be ignored.
- Wrap bool
-
- // If Autoscroll is true, the View will automatically scroll down when the
- // text overflows. If true the view's y-origin will be ignored.
- Autoscroll bool
-
- // If Frame is true, Title allows to configure a title for the view.
- Title string
-
- // If Mask is true, the View will display the mask instead of the real
- // content
- Mask rune
-}
-
-type viewLine struct {
- linesX, linesY int // coordinates relative to v.lines
- line []cell
-}
-
-type cell struct {
- chr rune
- bgColor, fgColor Attribute
-}
-
-type lineType []cell
-
-// String returns a string from a given cell slice.
-func (l lineType) String() string {
- str := ""
- for _, c := range l {
- str += string(c.chr)
- }
- return str
-}
-
-// newView returns a new View object.
-func newView(name string, x0, y0, x1, y1 int, mode OutputMode) *View {
- v := &View{
- name: name,
- x0: x0,
- y0: y0,
- x1: x1,
- y1: y1,
- Frame: true,
- Editor: DefaultEditor,
- tainted: true,
- ei: newEscapeInterpreter(mode),
- }
- return v
-}
-
-// Size returns the number of visible columns and rows in the View.
-func (v *View) Size() (x, y int) {
- return v.x1 - v.x0 - 1, v.y1 - v.y0 - 1
-}
-
-// Name returns the name of the view.
-func (v *View) Name() string {
- return v.name
-}
-
-// setRune sets a rune at the given point relative to the view. It applies the
-// specified colors, taking into account if the cell must be highlighted. Also,
-// it checks if the position is valid.
-func (v *View) setRune(x, y int, ch rune, fgColor, bgColor Attribute) error {
- maxX, maxY := v.Size()
- if x < 0 || x >= maxX || y < 0 || y >= maxY {
- return errors.New("invalid point")
- }
-
- var (
- ry, rcy int
- err error
- )
- if v.Highlight {
- _, ry, err = v.realPosition(x, y)
- if err != nil {
- return err
- }
- _, rcy, err = v.realPosition(v.cx, v.cy)
- if err != nil {
- return err
- }
- }
-
- if v.Mask != 0 {
- fgColor = v.FgColor
- bgColor = v.BgColor
- ch = v.Mask
- } else if v.Highlight && ry == rcy {
- fgColor = v.SelFgColor
- bgColor = v.SelBgColor
- }
-
- termbox.SetCell(v.x0+x+1, v.y0+y+1, ch,
- termbox.Attribute(fgColor), termbox.Attribute(bgColor))
-
- return nil
-}
-
-// SetCursor sets the cursor position of the view at the given point,
-// relative to the view. It checks if the position is valid.
-func (v *View) SetCursor(x, y int) error {
- maxX, maxY := v.Size()
- if x < 0 || x >= maxX || y < 0 || y >= maxY {
- return errors.New("invalid point")
- }
- v.cx = x
- v.cy = y
- return nil
-}
-
-// Cursor returns the cursor position of the view.
-func (v *View) Cursor() (x, y int) {
- return v.cx, v.cy
-}
-
-// SetOrigin sets the origin position of the view's internal buffer,
-// so the buffer starts to be printed from this point, which means that
-// it is linked with the origin point of view. It can be used to
-// implement Horizontal and Vertical scrolling with just incrementing
-// or decrementing ox and oy.
-func (v *View) SetOrigin(x, y int) error {
- if x < 0 || y < 0 {
- return errors.New("invalid point")
- }
- v.ox = x
- v.oy = y
- return nil
-}
-
-// Origin returns the origin position of the view.
-func (v *View) Origin() (x, y int) {
- return v.ox, v.oy
-}
-
-// Write appends a byte slice into the view's internal buffer. Because
-// View implements the io.Writer interface, it can be passed as parameter
-// of functions like fmt.Fprintf, fmt.Fprintln, io.Copy, etc. Clear must
-// be called to clear the view's buffer.
-func (v *View) Write(p []byte) (n int, err error) {
- v.tainted = true
-
- for _, ch := range bytes.Runes(p) {
- switch ch {
- case '\n':
- v.lines = append(v.lines, nil)
- case '\r':
- nl := len(v.lines)
- if nl > 0 {
- v.lines[nl-1] = nil
- } else {
- v.lines = make([][]cell, 1)
- }
- default:
- cells := v.parseInput(ch)
- if cells == nil {
- continue
- }
-
- nl := len(v.lines)
- if nl > 0 {
- v.lines[nl-1] = append(v.lines[nl-1], cells...)
- } else {
- v.lines = append(v.lines, cells)
- }
- }
- }
- return len(p), nil
-}
-
-// parseInput parses char by char the input written to the View. It returns nil
-// while processing ESC sequences. Otherwise, it returns a cell slice that
-// contains the processed data.
-func (v *View) parseInput(ch rune) []cell {
- cells := []cell{}
-
- isEscape, err := v.ei.parseOne(ch)
- if err != nil {
- for _, r := range v.ei.runes() {
- c := cell{
- fgColor: v.FgColor,
- bgColor: v.BgColor,
- chr: r,
- }
- cells = append(cells, c)
- }
- v.ei.reset()
- } else {
- if isEscape {
- return nil
- }
- c := cell{
- fgColor: v.ei.curFgColor,
- bgColor: v.ei.curBgColor,
- chr: ch,
- }
- cells = append(cells, c)
- }
-
- return cells
-}
-
-// Read reads data into p. It returns the number of bytes read into p.
-// At EOF, err will be io.EOF. Calling Read() after Rewind() makes the
-// cache to be refreshed with the contents of the view.
-func (v *View) Read(p []byte) (n int, err error) {
- if v.readOffset == 0 {
- v.readCache = v.Buffer()
- }
- if v.readOffset < len(v.readCache) {
- n = copy(p, v.readCache[v.readOffset:])
- v.readOffset += n
- } else {
- err = io.EOF
- }
- return
-}
-
-// Rewind sets the offset for the next Read to 0, which also refresh the
-// read cache.
-func (v *View) Rewind() {
- v.readOffset = 0
-}
-
-// draw re-draws the view's contents.
-func (v *View) draw() error {
- maxX, maxY := v.Size()
-
- if v.Wrap {
- if maxX == 0 {
- return errors.New("X size of the view cannot be 0")
- }
- v.ox = 0
- }
- if v.tainted {
- v.viewLines = nil
- for i, line := range v.lines {
- if v.Wrap {
- if len(line) < maxX {
- vline := viewLine{linesX: 0, linesY: i, line: line}
- v.viewLines = append(v.viewLines, vline)
- continue
- } else {
- for n := 0; n <= len(line); n += maxX {
- if len(line[n:]) <= maxX {
- vline := viewLine{linesX: n, linesY: i, line: line[n:]}
- v.viewLines = append(v.viewLines, vline)
- } else {
- vline := viewLine{linesX: n, linesY: i, line: line[n : n+maxX]}
- v.viewLines = append(v.viewLines, vline)
- }
- }
- }
- } else {
- vline := viewLine{linesX: 0, linesY: i, line: line}
- v.viewLines = append(v.viewLines, vline)
- }
- }
- v.tainted = false
- }
-
- if v.Autoscroll && len(v.viewLines) > maxY {
- v.oy = len(v.viewLines) - maxY
- }
- y := 0
- for i, vline := range v.viewLines {
- if i < v.oy {
- continue
- }
- if y >= maxY {
- break
- }
- x := 0
- for j, c := range vline.line {
- if j < v.ox {
- continue
- }
- if x >= maxX {
- break
- }
-
- fgColor := c.fgColor
- if fgColor == ColorDefault {
- fgColor = v.FgColor
- }
- bgColor := c.bgColor
- if bgColor == ColorDefault {
- bgColor = v.BgColor
- }
-
- if err := v.setRune(x, y, c.chr, fgColor, bgColor); err != nil {
- return err
- }
- x += runewidth.RuneWidth(c.chr)
- }
- y++
- }
- return nil
-}
-
-// realPosition returns the position in the internal buffer corresponding to the
-// point (x, y) of the view.
-func (v *View) realPosition(vx, vy int) (x, y int, err error) {
- vx = v.ox + vx
- vy = v.oy + vy
-
- if vx < 0 || vy < 0 {
- return 0, 0, errors.New("invalid point")
- }
-
- if len(v.viewLines) == 0 {
- return vx, vy, nil
- }
-
- if vy < len(v.viewLines) {
- vline := v.viewLines[vy]
- x = vline.linesX + vx
- y = vline.linesY
- } else {
- vline := v.viewLines[len(v.viewLines)-1]
- x = vx
- y = vline.linesY + vy - len(v.viewLines) + 1
- }
-
- return x, y, nil
-}
-
-// Clear empties the view's internal buffer.
-func (v *View) Clear() {
- v.tainted = true
-
- v.lines = nil
- v.viewLines = nil
- v.readOffset = 0
- v.clearRunes()
-}
-
-// clearRunes erases all the cells in the view.
-func (v *View) clearRunes() {
- maxX, maxY := v.Size()
- for x := 0; x < maxX; x++ {
- for y := 0; y < maxY; y++ {
- termbox.SetCell(v.x0+x+1, v.y0+y+1, ' ',
- termbox.Attribute(v.FgColor), termbox.Attribute(v.BgColor))
- }
- }
-}
-
-// BufferLines returns the lines in the view's internal
-// buffer.
-func (v *View) BufferLines() []string {
- lines := make([]string, len(v.lines))
- for i, l := range v.lines {
- str := lineType(l).String()
- str = strings.Replace(str, "\x00", " ", -1)
- lines[i] = str
- }
- return lines
-}
-
-// Buffer returns a string with the contents of the view's internal
-// buffer.
-func (v *View) Buffer() string {
- str := ""
- for _, l := range v.lines {
- str += lineType(l).String() + "\n"
- }
- return strings.Replace(str, "\x00", " ", -1)
-}
-
-// ViewBufferLines returns the lines in the view's internal
-// buffer that is shown to the user.
-func (v *View) ViewBufferLines() []string {
- lines := make([]string, len(v.viewLines))
- for i, l := range v.viewLines {
- str := lineType(l.line).String()
- str = strings.Replace(str, "\x00", " ", -1)
- lines[i] = str
- }
- return lines
-}
-
-// ViewBuffer returns a string with the contents of the view's buffer that is
-// shown to the user.
-func (v *View) ViewBuffer() string {
- str := ""
- for _, l := range v.viewLines {
- str += lineType(l.line).String() + "\n"
- }
- return strings.Replace(str, "\x00", " ", -1)
-}
-
-// Line returns a string with the line of the view's internal buffer
-// at the position corresponding to the point (x, y).
-func (v *View) Line(y int) (string, error) {
- _, y, err := v.realPosition(0, y)
- if err != nil {
- return "", err
- }
-
- if y < 0 || y >= len(v.lines) {
- return "", errors.New("invalid point")
- }
-
- return lineType(v.lines[y]).String(), nil
-}
-
-// Word returns a string with the word of the view's internal buffer
-// at the position corresponding to the point (x, y).
-func (v *View) Word(x, y int) (string, error) {
- x, y, err := v.realPosition(x, y)
- if err != nil {
- return "", err
- }
-
- if x < 0 || y < 0 || y >= len(v.lines) || x >= len(v.lines[y]) {
- return "", errors.New("invalid point")
- }
-
- str := lineType(v.lines[y]).String()
-
- nl := strings.LastIndexFunc(str[:x], indexFunc)
- if nl == -1 {
- nl = 0
- } else {
- nl = nl + 1
- }
- nr := strings.IndexFunc(str[x:], indexFunc)
- if nr == -1 {
- nr = len(str)
- } else {
- nr = nr + x
- }
- return string(str[nl:nr]), nil
-}
-
-// indexFunc allows to split lines by words taking into account spaces
-// and 0.
-func indexFunc(r rune) bool {
- return r == ' ' || r == 0
-}
generated by cgit (git 2.34.1) at 2024-11-07 16:14:48 +0000