forked from liamg/darktile
/
sgr.go
264 lines (241 loc) · 8.43 KB
/
sgr.go
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package terminal
import (
"fmt"
"strconv"
"strings"
"github.com/liamg/aminal/buffer"
"github.com/liamg/aminal/config"
)
func sgrSequenceHandler(params []string, terminal *Terminal) error {
if len(params) == 0 {
params = []string{"0"}
}
for i := range params {
p := strings.Replace(strings.Replace(params[i], "[", "", -1), "]", "", -1)
switch p {
case "00", "0", "":
attr := terminal.ActiveBuffer().CursorAttr()
*attr = buffer.CellAttributes{
FgColour: terminal.config.ColourScheme.Foreground,
BgColour: terminal.config.ColourScheme.Background,
}
case "1", "01":
terminal.ActiveBuffer().CursorAttr().Bold = true
case "2", "02":
terminal.ActiveBuffer().CursorAttr().Dim = true
case "4", "04":
terminal.ActiveBuffer().CursorAttr().Underline = true
case "5", "05":
terminal.ActiveBuffer().CursorAttr().Blink = true
case "7", "07":
terminal.ActiveBuffer().CursorAttr().Inverse = true
case "8", "08":
terminal.ActiveBuffer().CursorAttr().Hidden = true
case "21":
terminal.ActiveBuffer().CursorAttr().Bold = false
case "22":
terminal.ActiveBuffer().CursorAttr().Dim = false
case "23":
// not italic
case "24":
terminal.ActiveBuffer().CursorAttr().Underline = false
case "25":
terminal.ActiveBuffer().CursorAttr().Blink = false
case "27":
terminal.ActiveBuffer().CursorAttr().Inverse = false
case "28":
terminal.ActiveBuffer().CursorAttr().Hidden = false
case "29":
// not strikethrough
case "39":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Foreground
case "30":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Black
case "31":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Red
case "32":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Green
case "33":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Yellow
case "34":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Blue
case "35":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Magenta
case "36":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.Cyan
case "37":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.White
case "90":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.DarkGrey
case "91":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.LightRed
case "92":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.LightGreen
case "93":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.LightYellow
case "94":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.LightBlue
case "95":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.LightMagenta
case "96":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.LightCyan
case "97":
terminal.ActiveBuffer().CursorAttr().FgColour = terminal.config.ColourScheme.White
case "49":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Background
case "40":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Black
case "41":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Red
case "42":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Green
case "43":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Yellow
case "44":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Blue
case "45":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Magenta
case "46":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.Cyan
case "47":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.White
case "100":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.DarkGrey
case "101":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.LightRed
case "102":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.LightGreen
case "103":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.LightYellow
case "104":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.LightBlue
case "105":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.LightMagenta
case "106":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.LightCyan
case "107":
terminal.ActiveBuffer().CursorAttr().BgColour = terminal.config.ColourScheme.White
case "38": // set foreground
c, err := terminal.getANSIColour(params[i:])
if err != nil {
return err
}
terminal.ActiveBuffer().CursorAttr().FgColour = c
return nil
case "48": // set background
c, err := terminal.getANSIColour(params[i:])
if err != nil {
return err
}
terminal.ActiveBuffer().CursorAttr().BgColour = c
return nil
default:
return fmt.Errorf("Unknown SGR control sequence: (ESC[%sm)", params[i:])
}
}
//terminal.logger.Debugf("SGR control sequence: (ESC[%s%sm)", param, intermediate)
return nil
}
func (terminal *Terminal) getANSIColour(params []string) (config.Colour, error) {
if len(params) > 2 {
switch params[1] {
case "5":
// 8 bit colour
colNum, err := strconv.Atoi(params[2])
if err != nil || colNum >= 256 || colNum < 0 {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid 8-bit colour specifier")
}
return terminal.get8BitSGRColour(uint8(colNum)), nil
case "2":
if len(params) < 4 {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid true colour specifier")
}
// 24 bit colour
if len(params) == 5 { // standard true colour
r, err := strconv.Atoi(params[2])
if err != nil {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid true colour specifier")
}
g, err := strconv.Atoi(params[3])
if err != nil {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid true colour specifier")
}
b, err := strconv.Atoi(params[4])
if err != nil {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid true colour specifier")
}
return [3]float32{
float32(r) / 0xff,
float32(g) / 0xff,
float32(b) / 0xff,
}, nil
} else if len(params) > 5 { // ISO/IEC International Standard 8613-6
r, err := strconv.Atoi(params[3])
if err != nil {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid true colour specifier")
}
g, err := strconv.Atoi(params[4])
if err != nil {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid true colour specifier")
}
b, err := strconv.Atoi(params[5])
if err != nil {
return [3]float32{0, 0, 0}, fmt.Errorf("Invalid true colour specifier")
}
return [3]float32{
float32(r) / 0xff,
float32(g) / 0xff,
float32(b) / 0xff,
}, nil
}
}
}
return [3]float32{}, fmt.Errorf("Unknown ANSI colour format identifier")
}
func (terminal *Terminal) get8BitSGRColour(colNum uint8) [3]float32 {
// https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit
switch colNum {
case 0:
return terminal.config.ColourScheme.Black
case 1:
return terminal.config.ColourScheme.Red
case 2:
return terminal.config.ColourScheme.Green
case 3:
return terminal.config.ColourScheme.Yellow
case 4:
return terminal.config.ColourScheme.Blue
case 5:
return terminal.config.ColourScheme.Magenta
case 6:
return terminal.config.ColourScheme.Cyan
case 7:
return terminal.config.ColourScheme.White
case 8:
return terminal.config.ColourScheme.DarkGrey
case 9:
return terminal.config.ColourScheme.LightRed
case 10:
return terminal.config.ColourScheme.LightGreen
case 11:
return terminal.config.ColourScheme.LightYellow
case 12:
return terminal.config.ColourScheme.LightBlue
case 13:
return terminal.config.ColourScheme.LightMagenta
case 14:
return terminal.config.ColourScheme.LightCyan
case 15:
return terminal.config.ColourScheme.White
}
if colNum < 232 {
index := int(colNum - 16) // 0-216
rgb := (index * 0xffffff) / 216
r := float32((rgb&0xff0000)>>16) / 0xff
g := float32((rgb&0xff00)>>8) / 0xff
b := float32(rgb&0xff) / 0xff
return [3]float32{r, g, b}
}
c := float32(colNum-232) / 0x18
return [3]float32{c, c, c}
}