mirror of https://github.com/go-gitea/gitea
47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package label
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import (
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"fmt"
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"regexp"
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"strings"
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)
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// colorPattern is a regexp which can validate label color
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var colorPattern = regexp.MustCompile("^#?(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{3})$")
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// Label represents label information loaded from template
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type Label struct {
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Name string `yaml:"name"`
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Color string `yaml:"color"`
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Description string `yaml:"description,omitempty"`
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Exclusive bool `yaml:"exclusive,omitempty"`
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}
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// NormalizeColor normalizes a color string to a 6-character hex code
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func NormalizeColor(color string) (string, error) {
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// normalize case
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color = strings.TrimSpace(strings.ToLower(color))
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// add leading hash
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if len(color) == 6 || len(color) == 3 {
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color = "#" + color
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}
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if !colorPattern.MatchString(color) {
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return "", fmt.Errorf("bad color code: %s", color)
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}
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// convert 3-character shorthand into 6-character version
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if len(color) == 4 {
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r := color[1]
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g := color[2]
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b := color[3]
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color = fmt.Sprintf("#%c%c%c%c%c%c", r, r, g, g, b, b)
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}
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return color, nil
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}
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