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81 lines
2.0 KiB
Go
81 lines
2.0 KiB
Go
package bug
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import (
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"crypto/sha1"
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"fmt"
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"image/color"
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"strings"
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"github.com/MichaelMure/git-bug/util/text"
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)
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type Label string
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func (l Label) String() string {
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return string(l)
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}
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// RGBA from a Label computed in a deterministic way
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func (l Label) RGBA() color.RGBA {
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id := 0
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hash := sha1.Sum([]byte(l))
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// colors from: https://material-ui.com/style/color/
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colors := []color.RGBA{
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color.RGBA{R: 244, G: 67, B: 54, A: 255}, // red
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color.RGBA{R: 233, G: 30, B: 99, A: 255}, // pink
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color.RGBA{R: 156, G: 39, B: 176, A: 255}, // purple
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color.RGBA{R: 103, G: 58, B: 183, A: 255}, // deepPurple
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color.RGBA{R: 63, G: 81, B: 181, A: 255}, // indigo
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color.RGBA{R: 33, G: 150, B: 243, A: 255}, // blue
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color.RGBA{R: 3, G: 169, B: 244, A: 255}, // lightBlue
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color.RGBA{R: 0, G: 188, B: 212, A: 255}, // cyan
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color.RGBA{R: 0, G: 150, B: 136, A: 255}, // teal
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color.RGBA{R: 76, G: 175, B: 80, A: 255}, // green
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color.RGBA{R: 139, G: 195, B: 74, A: 255}, // lightGreen
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color.RGBA{R: 205, G: 220, B: 57, A: 255}, // lime
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color.RGBA{R: 255, G: 235, B: 59, A: 255}, // yellow
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color.RGBA{R: 255, G: 193, B: 7, A: 255}, // amber
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color.RGBA{R: 255, G: 152, B: 0, A: 255}, // orange
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color.RGBA{R: 255, G: 87, B: 34, A: 255}, // deepOrange
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color.RGBA{R: 121, G: 85, B: 72, A: 255}, // brown
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color.RGBA{R: 158, G: 158, B: 158, A: 255}, // grey
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color.RGBA{R: 96, G: 125, B: 139, A: 255}, // blueGrey
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}
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for _, char := range hash {
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id = (id + int(char)) % len(colors)
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}
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return colors[id]
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}
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func (l Label) Term256() int {
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rgba := l.RGBA()
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red := int(rgba.R) * 6 / 256
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green := int(rgba.G) * 6 / 256
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blue := int(rgba.B) * 6 / 256
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color256 := red*36 + green*6 + blue + 16
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return color256
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}
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func (l Label) Validate() error {
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str := string(l)
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if text.Empty(str) {
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return fmt.Errorf("empty")
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}
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if strings.Contains(str, "\n") {
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return fmt.Errorf("should be a single line")
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}
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if !text.Safe(str) {
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return fmt.Errorf("not fully printable")
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}
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return nil
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}
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