1package text
 2
 3import (
 4	"bytes"
 5	"fmt"
 6	"github.com/mattn/go-runewidth"
 7	"strings"
 8)
 9
10// LeftPadMaxLine pads a string on the left by a specified amount and pads the
11// string on the right to fill the maxLength
12func LeftPadMaxLine(text string, length, leftPad int) string {
13	rightPart := text
14
15	scrWidth := runewidth.StringWidth(text)
16	// truncate and ellipse if needed
17	if scrWidth+leftPad > length {
18		rightPart = runewidth.Truncate(text, length-leftPad, "…")
19	} else if scrWidth+leftPad < length {
20		rightPart = runewidth.FillRight(text, length-leftPad)
21	}
22
23	return fmt.Sprintf("%s%s",
24		strings.Repeat(" ", leftPad),
25		rightPart,
26	)
27}
28
29// LeftPad left pad each line of the given text
30func LeftPad(text string, leftPad int) string {
31	var result bytes.Buffer
32
33	pad := strings.Repeat(" ", leftPad)
34
35	for _, line := range strings.Split(text, "\n") {
36		result.WriteString(pad)
37		result.WriteString(line)
38		result.WriteString("\n")
39	}
40
41	return result.String()
42}