From cb8236c9c22007eb622b7219c58d3342f1f53d50 Mon Sep 17 00:00:00 2001
From: Michael Muré <batolettre@gmail.com>
Date: Sun, 3 Nov 2019 20:47:29 +0100
Subject: termui: migrate to awesome-gocui instead of the old fork I had

---
 vendor/github.com/MichaelMure/gocui/view.go | 504 ----------------------------
 1 file changed, 504 deletions(-)
 delete mode 100644 vendor/github.com/MichaelMure/gocui/view.go

(limited to 'vendor/github.com/MichaelMure/gocui/view.go')

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
-}
-- 
cgit