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https://github.com/go-gitea/gitea.git
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8a20fba8eb
Remove unmaintainable sanitizer rules. No need to add special "class" regexp rules anymore, use RenderInternal.SafeAttr instead, more details (and examples) are in the tests
114 lines
2.9 KiB
Go
114 lines
2.9 KiB
Go
// Copyright 2024 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package markup
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import (
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"strings"
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"code.gitea.io/gitea/modules/emoji"
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"code.gitea.io/gitea/modules/setting"
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"golang.org/x/net/html"
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"golang.org/x/net/html/atom"
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)
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func createEmoji(ctx *RenderContext, content, name string) *html.Node {
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span := &html.Node{
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Type: html.ElementNode,
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Data: atom.Span.String(),
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Attr: []html.Attribute{},
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}
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span.Attr = append(span.Attr, ctx.RenderInternal.NodeSafeAttr("class", "emoji"))
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if name != "" {
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span.Attr = append(span.Attr, html.Attribute{Key: "aria-label", Val: name})
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}
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text := &html.Node{
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Type: html.TextNode,
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Data: content,
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}
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span.AppendChild(text)
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return span
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}
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func createCustomEmoji(ctx *RenderContext, alias string) *html.Node {
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span := &html.Node{
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Type: html.ElementNode,
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Data: atom.Span.String(),
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Attr: []html.Attribute{},
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}
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span.Attr = append(span.Attr, ctx.RenderInternal.NodeSafeAttr("class", "emoji"))
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span.Attr = append(span.Attr, html.Attribute{Key: "aria-label", Val: alias})
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img := &html.Node{
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Type: html.ElementNode,
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DataAtom: atom.Img,
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Data: "img",
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Attr: []html.Attribute{},
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}
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img.Attr = append(img.Attr, html.Attribute{Key: "alt", Val: ":" + alias + ":"})
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img.Attr = append(img.Attr, html.Attribute{Key: "src", Val: setting.StaticURLPrefix + "/assets/img/emoji/" + alias + ".png"})
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span.AppendChild(img)
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return span
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}
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// emojiShortCodeProcessor for rendering text like :smile: into emoji
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func emojiShortCodeProcessor(ctx *RenderContext, node *html.Node) {
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start := 0
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next := node.NextSibling
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for node != nil && node != next && start < len(node.Data) {
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m := globalVars().emojiShortCodeRegex.FindStringSubmatchIndex(node.Data[start:])
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if m == nil {
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return
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}
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m[0] += start
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m[1] += start
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start = m[1]
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alias := node.Data[m[0]:m[1]]
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alias = strings.ReplaceAll(alias, ":", "")
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converted := emoji.FromAlias(alias)
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if converted == nil {
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// check if this is a custom reaction
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if _, exist := setting.UI.CustomEmojisMap[alias]; exist {
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replaceContent(node, m[0], m[1], createCustomEmoji(ctx, alias))
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node = node.NextSibling.NextSibling
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start = 0
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continue
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}
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continue
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}
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replaceContent(node, m[0], m[1], createEmoji(ctx, converted.Emoji, converted.Description))
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node = node.NextSibling.NextSibling
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start = 0
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}
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}
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// emoji processor to match emoji and add emoji class
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func emojiProcessor(ctx *RenderContext, node *html.Node) {
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start := 0
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next := node.NextSibling
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for node != nil && node != next && start < len(node.Data) {
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m := emoji.FindEmojiSubmatchIndex(node.Data[start:])
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if m == nil {
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return
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}
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m[0] += start
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m[1] += start
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codepoint := node.Data[m[0]:m[1]]
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start = m[1]
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val := emoji.FromCode(codepoint)
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if val != nil {
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replaceContent(node, m[0], m[1], createEmoji(ctx, codepoint, val.Description))
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node = node.NextSibling.NextSibling
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start = 0
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}
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}
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}
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