127 lines
2.3 KiB
Go
127 lines
2.3 KiB
Go
package termenv
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import (
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"fmt"
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"strings"
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"github.com/mattn/go-runewidth"
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)
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// Sequence definitions.
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const (
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ResetSeq = "0"
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BoldSeq = "1"
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FaintSeq = "2"
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ItalicSeq = "3"
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UnderlineSeq = "4"
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BlinkSeq = "5"
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ReverseSeq = "7"
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CrossOutSeq = "9"
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OverlineSeq = "53"
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)
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// Style is a string that various rendering styles can be applied to.
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type Style struct {
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profile Profile
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string
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styles []string
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}
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// String returns a new Style.
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func String(s ...string) Style {
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return Style{
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profile: ANSI,
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string: strings.Join(s, " "),
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}
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}
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func (t Style) String() string {
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return t.Styled(t.string)
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}
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// Styled renders s with all applied styles.
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func (t Style) Styled(s string) string {
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if t.profile == Ascii {
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return s
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}
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if len(t.styles) == 0 {
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return s
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}
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seq := strings.Join(t.styles, ";")
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if seq == "" {
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return s
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}
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return fmt.Sprintf("%s%sm%s%sm", CSI, seq, s, CSI+ResetSeq)
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}
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// Foreground sets a foreground color.
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func (t Style) Foreground(c Color) Style {
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if c != nil {
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t.styles = append(t.styles, c.Sequence(false))
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}
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return t
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}
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// Background sets a background color.
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func (t Style) Background(c Color) Style {
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if c != nil {
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t.styles = append(t.styles, c.Sequence(true))
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}
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return t
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}
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// Bold enables bold rendering.
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func (t Style) Bold() Style {
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t.styles = append(t.styles, BoldSeq)
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return t
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}
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// Faint enables faint rendering.
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func (t Style) Faint() Style {
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t.styles = append(t.styles, FaintSeq)
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return t
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}
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// Italic enables italic rendering.
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func (t Style) Italic() Style {
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t.styles = append(t.styles, ItalicSeq)
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return t
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}
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// Underline enables underline rendering.
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func (t Style) Underline() Style {
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t.styles = append(t.styles, UnderlineSeq)
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return t
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}
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// Overline enables overline rendering.
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func (t Style) Overline() Style {
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t.styles = append(t.styles, OverlineSeq)
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return t
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}
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// Blink enables blink mode.
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func (t Style) Blink() Style {
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t.styles = append(t.styles, BlinkSeq)
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return t
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}
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// Reverse enables reverse color mode.
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func (t Style) Reverse() Style {
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t.styles = append(t.styles, ReverseSeq)
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return t
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}
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// CrossOut enables crossed-out rendering.
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func (t Style) CrossOut() Style {
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t.styles = append(t.styles, CrossOutSeq)
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return t
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}
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// Width returns the width required to print all runes in Style.
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func (t Style) Width() int {
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return runewidth.StringWidth(t.string)
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}
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