forked from toolshed/abra
decentral1se
1723025fbf
We were running behind and there were quite some deprecations to update. This was mostly in the upstream copy/pasta package but seems quite minimal.
132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
package cellbuf
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import (
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"bytes"
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"image/color"
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"github.com/charmbracelet/x/ansi"
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)
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// ReadStyle reads a Select Graphic Rendition (SGR) escape sequences from a
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// list of parameters.
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func ReadStyle(params ansi.Params, pen *Style) {
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if len(params) == 0 {
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pen.Reset()
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return
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}
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for i := 0; i < len(params); i++ {
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param, hasMore, _ := params.Param(i, 0)
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switch param {
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case 0: // Reset
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pen.Reset()
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case 1: // Bold
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pen.Bold(true)
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case 2: // Dim/Faint
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pen.Faint(true)
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case 3: // Italic
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pen.Italic(true)
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case 4: // Underline
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nextParam, _, ok := params.Param(i+1, 0)
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if hasMore && ok { // Only accept subparameters i.e. separated by ":"
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switch nextParam {
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case 0, 1, 2, 3, 4, 5:
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i++
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switch nextParam {
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case 0: // No Underline
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pen.UnderlineStyle(NoUnderline)
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case 1: // Single Underline
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pen.UnderlineStyle(SingleUnderline)
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case 2: // Double Underline
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pen.UnderlineStyle(DoubleUnderline)
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case 3: // Curly Underline
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pen.UnderlineStyle(CurlyUnderline)
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case 4: // Dotted Underline
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pen.UnderlineStyle(DottedUnderline)
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case 5: // Dashed Underline
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pen.UnderlineStyle(DashedUnderline)
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}
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}
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} else {
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// Single Underline
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pen.Underline(true)
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}
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case 5: // Slow Blink
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pen.SlowBlink(true)
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case 6: // Rapid Blink
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pen.RapidBlink(true)
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case 7: // Reverse
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pen.Reverse(true)
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case 8: // Conceal
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pen.Conceal(true)
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case 9: // Crossed-out/Strikethrough
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pen.Strikethrough(true)
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case 22: // Normal Intensity (not bold or faint)
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pen.Bold(false).Faint(false)
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case 23: // Not italic, not Fraktur
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pen.Italic(false)
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case 24: // Not underlined
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pen.Underline(false)
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case 25: // Blink off
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pen.SlowBlink(false).RapidBlink(false)
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case 27: // Positive (not reverse)
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pen.Reverse(false)
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case 28: // Reveal
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pen.Conceal(false)
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case 29: // Not crossed out
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pen.Strikethrough(false)
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case 30, 31, 32, 33, 34, 35, 36, 37: // Set foreground
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pen.Foreground(ansi.Black + ansi.BasicColor(param-30)) //nolint:gosec
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case 38: // Set foreground 256 or truecolor
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var c color.Color
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n := ReadStyleColor(params[i:], &c)
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if n > 0 {
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pen.Foreground(c)
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i += n - 1
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}
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case 39: // Default foreground
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pen.Foreground(nil)
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case 40, 41, 42, 43, 44, 45, 46, 47: // Set background
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pen.Background(ansi.Black + ansi.BasicColor(param-40)) //nolint:gosec
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case 48: // Set background 256 or truecolor
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var c color.Color
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n := ReadStyleColor(params[i:], &c)
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if n > 0 {
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pen.Background(c)
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i += n - 1
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}
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case 49: // Default Background
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pen.Background(nil)
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case 58: // Set underline color
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var c color.Color
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n := ReadStyleColor(params[i:], &c)
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if n > 0 {
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pen.UnderlineColor(c)
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i += n - 1
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}
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case 59: // Default underline color
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pen.UnderlineColor(nil)
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case 90, 91, 92, 93, 94, 95, 96, 97: // Set bright foreground
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pen.Foreground(ansi.BrightBlack + ansi.BasicColor(param-90)) //nolint:gosec
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case 100, 101, 102, 103, 104, 105, 106, 107: // Set bright background
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pen.Background(ansi.BrightBlack + ansi.BasicColor(param-100)) //nolint:gosec
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}
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}
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}
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// ReadLink reads a hyperlink escape sequence from a data buffer.
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func ReadLink(p []byte, link *Link) {
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params := bytes.Split(p, []byte{';'})
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if len(params) != 3 {
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return
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}
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link.Params = string(params[1])
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link.URL = string(params[2])
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}
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// ReadStyleColor reads a color from a list of parameters.
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// See [ansi.ReadStyleColor] for more information.
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func ReadStyleColor(params ansi.Params, c *color.Color) int {
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return ansi.ReadStyleColor(params, c)
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}
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