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Merge pull request '[BUG] Don't color dot literal color names' (#2905) from gusted/forgejo-colordots into forgejo

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Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/2905
Reviewed-by: Algernon <algernon@noreply.codeberg.org>
This commit is contained in:
Gusted 2024-03-30 22:08:36 +00:00
commit 46fead4c73
3 changed files with 70 additions and 2 deletions
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19
modules/markup/markdown/color_util.go Normal file
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@ -0,0 +1,19 @@
// Copyright 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package markdown
import "regexp"
var (
hexRGB = regexp.MustCompile(`^#([0-9a-f]{3}|[0-9a-f]{6}|[0-9a-f]{8})$`)
hsl = regexp.MustCompile(`^hsl\([ ]*([012]?[0-9]{1,2}|3[0-5][0-9]|360),[ ]*([0-9]{0,2}|100)\%,[ ]*([0-9]{0,2}|100)\%\)$`)
hsla = regexp.MustCompile(`^hsla\(([ ]*[012]?[0-9]{1,2}|3[0-5][0-9]|360),[ ]*([0-9]{0,2}|100)\%,[ ]*([0-9]{0,2}|100)\%,[ ]*(1|1\.0|0|(0\.[0-9]+))\)$`)
rgb = regexp.MustCompile(`^rgb\(([ ]*((([0-9]{1,2}|100)\%)|(([01]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))),){2}([ ]*((([0-9]{1,2}|100)\%)|(([01]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))))\)$`)
rgba = regexp.MustCompile(`^rgba\(([ ]*((([0-9]{1,2}|100)\%)|(([01]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))),){3}[ ]*(1(\.0)?|0|(0\.[0-9]+))\)$`)
)
// matchColor return if color is in the form of hex RGB, HSL(A) or RGB(A).
func matchColor(color string) bool {
return hexRGB.MatchString(color) || rgb.MatchString(color) || rgba.MatchString(color) || hsl.MatchString(color) || hsla.MatchString(color)
}

50
modules/markup/markdown/color_util_test.go Normal file
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@ -0,0 +1,50 @@
// Copyright 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package markdown
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestMatchColor(t *testing.T) {
testCases := []struct {
input string
expected bool
}{
{"#ddeeffa0", true},
{"#ddeefe", true},
{"#abcdef", true},
{"#abcdeg", false},
{"#abcdefg0", false},
{"black", false},
{"violet", false},
{"rgb(255, 255, 255)", true},
{"rgb(0, 0, 0)", true},
{"rgb(256, 0, 0)", false},
{"rgb(0, 256, 0)", false},
{"rgb(0, 0, 256)", false},
{"rgb(0, 0, 0, 1)", false},
{"rgba(0, 0, 0)", false},
{"rgba(0, 255, 0, 1)", true},
{"rgba(32, 255, 12, 0.55)", true},
{"rgba(32, 256, 12, 0.55)", false},
{"hsl(0, 0%, 0%)", true},
{"hsl(360, 100%, 100%)", true},
{"hsl(361, 100%, 50%)", false},
{"hsl(360, 101%, 50%)", false},
{"hsl(360, 100%, 101%)", false},
{"hsl(0, 0%, 0%, 0)", false},
{"hsla(0, 0%, 0%)", false},
{"hsla(0, 0%, 0%, 0)", true},
{"hsla(0, 0%, 0%, 1)", true},
{"hsla(0, 0%, 0%, 0.5)", true},
{"hsla(0, 0%, 0%, 1.5)", false},
}
for _, testCase := range testCases {
actual := matchColor(testCase.input)
assert.Equal(t, testCase.expected, actual)
}
}

3
modules/markup/markdown/goldmark.go
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@ -16,7 +16,6 @@ import (
"code.gitea.io/gitea/modules/setting"
giteautil "code.gitea.io/gitea/modules/util"
"github.com/microcosm-cc/bluemonday/css"
"github.com/yuin/goldmark/ast"
east "github.com/yuin/goldmark/extension/ast"
"github.com/yuin/goldmark/parser"
@ -199,7 +198,7 @@ func (g *ASTTransformer) Transform(node *ast.Document, reader text.Reader, pc pa
}
case *ast.CodeSpan:
colorContent := n.Text(reader.Source())
if css.ColorHandler(strings.ToLower(string(colorContent))) {
if matchColor(strings.ToLower(string(colorContent))) {
v.AppendChild(v, NewColorPreview(colorContent))
}
}