Method parseInput

pkg/gocui/view.go:939–994

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.

(ch []byte, width int, x int, _ int)

// while processing ESC sequences. Otherwise, it returns a cell slice that
// contains the processed data.
func (v *View) parseInput(ch []byte, width int, x int, _ int) (bool, []cell) {
	cells := []cell{}
	truncateLine := false

	isEscape, err := v.ei.parseOne(ch)
	if err != nil {
		for _, chr := range v.ei.characters() {
			c := cell{
				fgColor: v.FgColor,
				bgColor: v.BgColor,
				chr:     chr,
				width:   uniseg.StringWidth(chr),
			}
			cells = append(cells, c)
		}
		v.ei.reset()
	} else {
		repeatCount := 1
		if _, ok := v.ei.instruction.(eraseInLineFromCursor); ok {
			// fill rest of line
			v.ei.instructionRead()
			cx := 0
			for _, cell := range v.lines[v.wy][0:v.wx] {
				cx += cell.width
			}
			repeatCount = v.InnerWidth() - cx
			ch = []byte{' '}
			width = 1
			truncateLine = true
		} else if isEscape {
			// do not output anything
			return truncateLine, nil
		} else if characterEquals(ch, '\t') {
			// fill tab-sized space
			tabWidth := v.TabWidth
			if tabWidth < 1 {
				tabWidth = 4
			}
			ch = []byte{' '}
			width = 1
			repeatCount = tabWidth - (x % tabWidth)
		}
		c := cell{
			fgColor:   v.ei.curFgColor,
			bgColor:   v.ei.curBgColor,
			hyperlink: v.ei.hyperlink.String(),
			chr:       string(ch),
			width:     width,
		}
		for range repeatCount {
			cells = append(cells, c)
		}
	}

	return truncateLine, cells
}

// Read reads data into p from the current reading position set by SetReadPos.