A fork of Gitea (see branch `mj`) adding Majority Judgment Polls 𐄷 over Issues and Merge Requests. https://git.mieuxvoter.fr
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

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// Copyright 2017 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package markup
import (
"bytes"
"fmt"
"net/url"
"path"
"path/filepath"
"regexp"
"strings"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/emoji"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup/common"
"code.gitea.io/gitea/modules/references"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
"github.com/unknwon/com"
"golang.org/x/net/html"
"golang.org/x/net/html/atom"
"mvdan.cc/xurls/v2"
)
// Issue name styles
const (
IssueNameStyleNumeric = "numeric"
IssueNameStyleAlphanumeric = "alphanumeric"
)
var (
// NOTE: All below regex matching do not perform any extra validation.
// Thus a link is produced even if the linked entity does not exist.
// While fast, this is also incorrect and lead to false positives.
// TODO: fix invalid linking issue
// sha1CurrentPattern matches string that represents a commit SHA, e.g. d8a994ef243349f321568f9e36d5c3f444b99cae
// Although SHA1 hashes are 40 chars long, the regex matches the hash from 7 to 40 chars in length
// so that abbreviated hash links can be used as well. This matches git and github useability.
sha1CurrentPattern = regexp.MustCompile(`(?:\s|^|\(|\[)([0-9a-f]{7,40})(?:\s|$|\)|\]|\.(\s|$))`)
// shortLinkPattern matches short but difficult to parse [[name|link|arg=test]] syntax
shortLinkPattern = regexp.MustCompile(`\[\[(.*?)\]\](\w*)`)
// anySHA1Pattern allows to split url containing SHA into parts
anySHA1Pattern = regexp.MustCompile(`https?://(?:\S+/){4}([0-9a-f]{40})(/[^#\s]+)?(#\S+)?`)
validLinksPattern = regexp.MustCompile(`^[a-z][\w-]+://`)
// While this email regex is definitely not perfect and I'm sure you can come up
// with edge cases, it is still accepted by the CommonMark specification, as
// well as the HTML5 spec:
// http://spec.commonmark.org/0.28/#email-address
// https://html.spec.whatwg.org/multipage/input.html#e-mail-state-(type%3Demail)
emailRegex = regexp.MustCompile("(?:\\s|^|\\(|\\[)([a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9]{2,}(?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+)(?:\\s|$|\\)|\\]|\\.(\\s|$))")
// blackfriday extensions create IDs like fn:user-content-footnote
blackfridayExtRegex = regexp.MustCompile(`[^:]*:user-content-`)
// EmojiShortCodeRegex find emoji by alias like :smile:
EmojiShortCodeRegex = regexp.MustCompile(`\:[\w\+\-]+\:{1}`)
)
// CSS class for action keywords (e.g. "closes: #1")
const keywordClass = "issue-keyword"
// regexp for full links to issues/pulls
var issueFullPattern *regexp.Regexp
// IsLink reports whether link fits valid format.
func IsLink(link []byte) bool {
return isLink(link)
}
// isLink reports whether link fits valid format.
func isLink(link []byte) bool {
return validLinksPattern.Match(link)
}
func isLinkStr(link string) bool {
return validLinksPattern.MatchString(link)
}
func getIssueFullPattern() *regexp.Regexp {
if issueFullPattern == nil {
appURL := setting.AppURL
if len(appURL) > 0 && appURL[len(appURL)-1] != '/' {
appURL += "/"
}
issueFullPattern = regexp.MustCompile(appURL +
`\w+/\w+/(?:issues|pulls)/((?:\w{1,10}-)?[1-9][0-9]*)([\?|#]\S+.(\S+)?)?\b`)
}
return issueFullPattern
}
// CustomLinkURLSchemes allows for additional schemes to be detected when parsing links within text
func CustomLinkURLSchemes(schemes []string) {
schemes = append(schemes, "http", "https")
withAuth := make([]string, 0, len(schemes))
validScheme := regexp.MustCompile(`^[a-z]+$`)
for _, s := range schemes {
if !validScheme.MatchString(s) {
continue
}
without := false
for _, sna := range xurls.SchemesNoAuthority {
if s == sna {
without = true
break
}
}
if without {
s += ":"
} else {
s += "://"
}
withAuth = append(withAuth, s)
}
common.LinkRegex, _ = xurls.StrictMatchingScheme(strings.Join(withAuth, "|"))
}
// IsSameDomain checks if given url string has the same hostname as current Gitea instance
func IsSameDomain(s string) bool {
if strings.HasPrefix(s, "/") {
return true
}
if uapp, err := url.Parse(setting.AppURL); err == nil {
if u, err := url.Parse(s); err == nil {
return u.Host == uapp.Host
}
return false
}
return false
}
type postProcessError struct {
context string
err error
}
func (p *postProcessError) Error() string {
return "PostProcess: " + p.context + ", " + p.err.Error()
}
type processor func(ctx *postProcessCtx, node *html.Node)
var defaultProcessors = []processor{
fullIssuePatternProcessor,
fullSha1PatternProcessor,
shortLinkProcessor,
linkProcessor,
mentionProcessor,
issueIndexPatternProcessor,
sha1CurrentPatternProcessor,
emailAddressProcessor,
emojiProcessor,
emojiShortCodeProcessor,
}
type postProcessCtx struct {
metas map[string]string
urlPrefix string
isWikiMarkdown bool
// processors used by this context.
procs []processor
}
// PostProcess does the final required transformations to the passed raw HTML
// data, and ensures its validity. Transformations include: replacing links and
// emails with HTML links, parsing shortlinks in the format of [[Link]], like
// MediaWiki, linking issues in the format #ID, and mentions in the format
// @user, and others.
func PostProcess(
rawHTML []byte,
urlPrefix string,
metas map[string]string,
isWikiMarkdown bool,
) ([]byte, error) {
// create the context from the parameters
ctx := &postProcessCtx{
metas: metas,
urlPrefix: urlPrefix,
isWikiMarkdown: isWikiMarkdown,
procs: defaultProcessors,
}
return ctx.postProcess(rawHTML)
}
var commitMessageProcessors = []processor{
fullIssuePatternProcessor,
fullSha1PatternProcessor,
linkProcessor,
mentionProcessor,
issueIndexPatternProcessor,
sha1CurrentPatternProcessor,
emailAddressProcessor,
emojiProcessor,
emojiShortCodeProcessor,
}
// RenderCommitMessage will use the same logic as PostProcess, but will disable
// the shortLinkProcessor and will add a defaultLinkProcessor if defaultLink is
// set, which changes every text node into a link to the passed default link.
func RenderCommitMessage(
rawHTML []byte,
urlPrefix, defaultLink string,
metas map[string]string,
) ([]byte, error) {
ctx := &postProcessCtx{
metas: metas,
urlPrefix: urlPrefix,
procs: commitMessageProcessors,
}
if defaultLink != "" {
// we don't have to fear data races, because being
// commitMessageProcessors of fixed len and cap, every time we append
// something to it the slice is realloc+copied, so append always
// generates the slice ex-novo.
ctx.procs = append(ctx.procs, genDefaultLinkProcessor(defaultLink))
}
return ctx.postProcess(rawHTML)
}
var commitMessageSubjectProcessors = []processor{
fullIssuePatternProcessor,
fullSha1PatternProcessor,
linkProcessor,
mentionProcessor,
issueIndexPatternProcessor,
sha1CurrentPatternProcessor,
emojiShortCodeProcessor,
emojiProcessor,
}
var emojiProcessors = []processor{
emojiShortCodeProcessor,
emojiProcessor,
}
// RenderCommitMessageSubject will use the same logic as PostProcess and
// RenderCommitMessage, but will disable the shortLinkProcessor and
// emailAddressProcessor, will add a defaultLinkProcessor if defaultLink is set,
// which changes every text node into a link to the passed default link.
func RenderCommitMessageSubject(
rawHTML []byte,
urlPrefix, defaultLink string,
metas map[string]string,
) ([]byte, error) {
ctx := &postProcessCtx{
metas: metas,
urlPrefix: urlPrefix,
procs: commitMessageSubjectProcessors,
}
if defaultLink != "" {
// we don't have to fear data races, because being
// commitMessageSubjectProcessors of fixed len and cap, every time we
// append something to it the slice is realloc+copied, so append always
// generates the slice ex-novo.
ctx.procs = append(ctx.procs, genDefaultLinkProcessor(defaultLink))
}
return ctx.postProcess(rawHTML)
}
// RenderIssueTitle to process title on individual issue/pull page
func RenderIssueTitle(
rawHTML []byte,
urlPrefix string,
metas map[string]string,
) ([]byte, error) {
ctx := &postProcessCtx{
metas: metas,
urlPrefix: urlPrefix,
procs: []processor{
issueIndexPatternProcessor,
sha1CurrentPatternProcessor,
emojiShortCodeProcessor,
emojiProcessor,
},
}
return ctx.postProcess(rawHTML)
}
// RenderDescriptionHTML will use similar logic as PostProcess, but will
// use a single special linkProcessor.
func RenderDescriptionHTML(
rawHTML []byte,
urlPrefix string,
metas map[string]string,
) ([]byte, error) {
ctx := &postProcessCtx{
metas: metas,
urlPrefix: urlPrefix,
procs: []processor{
descriptionLinkProcessor,
emojiShortCodeProcessor,
emojiProcessor,
},
}
return ctx.postProcess(rawHTML)
}
// RenderEmoji for when we want to just process emoji and shortcodes
// in various places it isn't already run through the normal markdown procesor
func RenderEmoji(
rawHTML []byte,
) ([]byte, error) {
ctx := &postProcessCtx{
procs: emojiProcessors,
}
return ctx.postProcess(rawHTML)
}
var byteBodyTag = []byte("<body>")
var byteBodyTagClosing = []byte("</body>")
func (ctx *postProcessCtx) postProcess(rawHTML []byte) ([]byte, error) {
if ctx.procs == nil {
ctx.procs = defaultProcessors
}
// give a generous extra 50 bytes
res := make([]byte, 0, len(rawHTML)+50)
res = append(res, byteBodyTag...)
res = append(res, rawHTML...)
res = append(res, byteBodyTagClosing...)
// parse the HTML
nodes, err := html.ParseFragment(bytes.NewReader(res), nil)
if err != nil {
return nil, &postProcessError{"invalid HTML", err}
}
for _, node := range nodes {
ctx.visitNode(node, true)
}
// Create buffer in which the data will be placed again. We know that the
// length will be at least that of res; to spare a few alloc+copy, we
// reuse res, resetting its length to 0.
buf := bytes.NewBuffer(res[:0])
// Render everything to buf.
for _, node := range nodes {
err = html.Render(buf, node)
if err != nil {
return nil, &postProcessError{"error rendering processed HTML", err}
}
}
// remove initial parts - because Render creates a whole HTML page.
res = buf.Bytes()
res = res[bytes.Index(res, byteBodyTag)+len(byteBodyTag) : bytes.LastIndex(res, byteBodyTagClosing)]
// Everything done successfully, return parsed data.
return res, nil
}
func (ctx *postProcessCtx) visitNode(node *html.Node, visitText bool) {
// Add user-content- to IDs if they don't already have them
for idx, attr := range node.Attr {
if attr.Key == "id" && !(strings.HasPrefix(attr.Val, "user-content-") || blackfridayExtRegex.MatchString(attr.Val)) {
node.Attr[idx].Val = "user-content-" + attr.Val
}
if attr.Key == "class" && attr.Val == "emoji" {
visitText = false
}
}
// We ignore code, pre and already generated links.
switch node.Type {
case html.TextNode:
if visitText {
ctx.textNode(node)
}
case html.ElementNode:
if node.Data == "img" {
attrs := node.Attr
for idx, attr := range attrs {
if attr.Key != "src" {
continue
}
link := []byte(attr.Val)
if len(link) > 0 && !IsLink(link) {
prefix := ctx.urlPrefix
if ctx.isWikiMarkdown {
prefix = util.URLJoin(prefix, "wiki", "raw")
}
prefix = strings.Replace(prefix, "/src/", "/media/", 1)
lnk := string(link)
lnk = util.URLJoin(prefix, lnk)
link = []byte(lnk)
}
node.Attr[idx].Val = string(link)
}
} else if node.Data == "a" {
visitText = false
} else if node.Data == "code" || node.Data == "pre" {
return
} else if node.Data == "i" {
for _, attr := range node.Attr {
if attr.Key != "class" {
continue
}
classes := strings.Split(attr.Val, " ")
for i, class := range classes {
if class == "icon" {
classes[0], classes[i] = classes[i], classes[0]
attr.Val = strings.Join(classes, " ")
// Remove all children of icons
child := node.FirstChild
for child != nil {
node.RemoveChild(child)
child = node.FirstChild
}
break
}
}
}
}
for n := node.FirstChild; n != nil; n = n.NextSibling {
ctx.visitNode(n, visitText)
}
}
// ignore everything else
}
// textNode runs the passed node through various processors, in order to handle
// all kinds of special links handled by the post-processing.
func (ctx *postProcessCtx) textNode(node *html.Node) {
for _, processor := range ctx.procs {
processor(ctx, node)
}
}
// createKeyword() renders a highlighted version of an action keyword
func createKeyword(content string) *html.Node {
span := &html.Node{
Type: html.ElementNode,
Data: atom.Span.String(),
Attr: []html.Attribute{},
}
span.Attr = append(span.Attr, html.Attribute{Key: "class", Val: keywordClass})
text := &html.Node{
Type: html.TextNode,
Data: content,
}
span.AppendChild(text)
return span
}
func createEmoji(content, class, name string) *html.Node {
span := &html.Node{
Type: html.ElementNode,
Data: atom.Span.String(),
Attr: []html.Attribute{},
}
if class != "" {
span.Attr = append(span.Attr, html.Attribute{Key: "class", Val: class})
}
if name != "" {
span.Attr = append(span.Attr, html.Attribute{Key: "aria-label", Val: name})
}
text := &html.Node{
Type: html.TextNode,
Data: content,
}
span.AppendChild(text)
return span
}
func createCustomEmoji(alias, class string) *html.Node {
span := &html.Node{
Type: html.ElementNode,
Data: atom.Span.String(),
Attr: []html.Attribute{},
}
if class != "" {
span.Attr = append(span.Attr, html.Attribute{Key: "class", Val: class})
span.Attr = append(span.Attr, html.Attribute{Key: "aria-label", Val: alias})
}
img := &html.Node{
Type: html.ElementNode,
DataAtom: atom.Img,
Data: "img",
Attr: []html.Attribute{},
}
if class != "" {
img.Attr = append(img.Attr, html.Attribute{Key: "alt", Val: fmt.Sprintf(`:%s:`, alias)})
img.Attr = append(img.Attr, html.Attribute{Key: "src", Val: fmt.Sprintf(`%s/img/emoji/%s.png`, setting.StaticURLPrefix, alias)})
}
span.AppendChild(img)
return span
}
func createLink(href, content, class string) *html.Node {
a := &html.Node{
Type: html.ElementNode,
Data: atom.A.String(),
Attr: []html.Attribute{{Key: "href", Val: href}},
}
if class != "" {
a.Attr = append(a.Attr, html.Attribute{Key: "class", Val: class})
}
text := &html.Node{
Type: html.TextNode,
Data: content,
}
a.AppendChild(text)
return a
}
func createCodeLink(href, content, class string) *html.Node {
a := &html.Node{
Type: html.ElementNode,
Data: atom.A.String(),
Attr: []html.Attribute{{Key: "href", Val: href}},
}
if class != "" {
a.Attr = append(a.Attr, html.Attribute{Key: "class", Val: class})
}
text := &html.Node{
Type: html.TextNode,
Data: content,
}
code := &html.Node{
Type: html.ElementNode,
Data: atom.Code.String(),
Attr: []html.Attribute{{Key: "class", Val: "nohighlight"}},
}
code.AppendChild(text)
a.AppendChild(code)
return a
}
// replaceContent takes text node, and in its content it replaces a section of
// it with the specified newNode.
func replaceContent(node *html.Node, i, j int, newNode *html.Node) {
replaceContentList(node, i, j, []*html.Node{newNode})
}
// replaceContentList takes text node, and in its content it replaces a section of
// it with the specified newNodes. An example to visualize how this can work can
// be found here: https://play.golang.org/p/5zP8NnHZ03s
func replaceContentList(node *html.Node, i, j int, newNodes []*html.Node) {
// get the data before and after the match
before := node.Data[:i]
after := node.Data[j:]
// Replace in the current node the text, so that it is only what it is
// supposed to have.
node.Data = before
// Get the current next sibling, before which we place the replaced data,
// and after that we place the new text node.
nextSibling := node.NextSibling
for _, n := range newNodes {
node.Parent.InsertBefore(n, nextSibling)
}
if after != "" {
node.Parent.InsertBefore(&html.Node{
Type: html.TextNode,
Data: after,
}, nextSibling)
}
}
func mentionProcessor(ctx *postProcessCtx, node *html.Node) {
// We replace only the first mention; other mentions will be addressed later
found, loc := references.FindFirstMentionBytes([]byte(node.Data))
if !found {
return
}
mention := node.Data[loc.Start:loc.End]
var teams string
teams, ok := ctx.metas["teams"]
// team mention should follow @orgName/teamName style
if ok && strings.Contains(mention, "/") {
mentionOrgAndTeam := strings.Split(mention, "/")
if mentionOrgAndTeam[0][1:] == ctx.metas["org"] && strings.Contains(teams, ","+strings.ToLower(mentionOrgAndTeam[1])+",") {
replaceContent(node, loc.Start, loc.End, createLink(util.URLJoin(setting.AppURL, "org", ctx.metas["org"], "teams", mentionOrgAndTeam[1]), mention, "mention"))
}
return
}
replaceContent(node, loc.Start, loc.End, createLink(util.URLJoin(setting.AppURL, mention[1:]), mention, "mention"))
}
func shortLinkProcessor(ctx *postProcessCtx, node *html.Node) {
shortLinkProcessorFull(ctx, node, false)
}
func shortLinkProcessorFull(ctx *postProcessCtx, node *html.Node, noLink bool) {
m := shortLinkPattern.FindStringSubmatchIndex(node.Data)
if m == nil {
return
}
content := node.Data[m[2]:m[3]]
tail := node.Data[m[4]:m[5]]
props := make(map[string]string)
// MediaWiki uses [[link|text]], while GitHub uses [[text|link]]
// It makes page handling terrible, but we prefer GitHub syntax
// And fall back to MediaWiki only when it is obvious from the look
// Of text and link contents
sl := strings.Split(content, "|")
for _, v := range sl {
if equalPos := strings.IndexByte(v, '='); equalPos == -1 {
// There is no equal in this argument; this is a mandatory arg
if props["name"] == "" {
if isLinkStr(v) {
// If we clearly see it is a link, we save it so
// But first we need to ensure, that if both mandatory args provided
// look like links, we stick to GitHub syntax
if props["link"] != "" {
props["name"] = props["link"]
}
props["link"] = strings.TrimSpace(v)
} else {
props["name"] = v
}
} else {
props["link"] = strings.TrimSpace(v)
}
} else {
// There is an equal; optional argument.
sep := strings.IndexByte(v, '=')
key, val := v[:sep], html.UnescapeString(v[sep+1:])
// When parsing HTML, x/net/html will change all quotes which are
// not used for syntax into UTF-8 quotes. So checking val[0] won't
// be enough, since that only checks a single byte.
if len(val) > 1 {
if (strings.HasPrefix(val, "“") && strings.HasSuffix(val, "”")) ||
(strings.HasPrefix(val, "‘") && strings.HasSuffix(val, "’")) {
const lenQuote = len("‘")
val = val[lenQuote : len(val)-lenQuote]
} else if (strings.HasPrefix(val, "\"") && strings.HasSuffix(val, "\"")) ||
(strings.HasPrefix(val, "'") && strings.HasSuffix(val, "'")) {
val = val[1 : len(val)-1]
} else if strings.HasPrefix(val, "'") && strings.HasSuffix(val, "’") {
const lenQuote = len("‘")
val = val[1 : len(val)-lenQuote]
}
}
props[key] = val
}
}
var name, link string
if props["link"] != "" {
link = props["link"]
} else if props["name"] != "" {
link = props["name"]
}
if props["title"] != "" {
name = props["title"]
} else if props["name"] != "" {
name = props["name"]
} else {
name = link
}
name += tail
image := false
switch ext := filepath.Ext(link); ext {
// fast path: empty string, ignore
case "":
break
case ".jpg", ".jpeg", ".png", ".tif", ".tiff", ".webp", ".gif", ".bmp", ".ico", ".svg":
image = true
}
childNode := &html.Node{}
linkNode := &html.Node{
FirstChild: childNode,
LastChild: childNode,
Type: html.ElementNode,
Data: "a",
DataAtom: atom.A,
}
childNode.Parent = linkNode
absoluteLink := isLinkStr(link)
if !absoluteLink {
if image {
link = strings.ReplaceAll(link, " ", "+")
} else {
link = strings.ReplaceAll(link, " ", "-")
}
if !strings.Contains(link, "/") {
link = url.PathEscape(link)
}
}
urlPrefix := ctx.urlPrefix
if image {
if !absoluteLink {
if IsSameDomain(urlPrefix) {
urlPrefix = strings.Replace(urlPrefix, "/src/", "/raw/", 1)
}
if ctx.isWikiMarkdown {
link = util.URLJoin("wiki", "raw", link)
}
link = util.URLJoin(urlPrefix, link)
}
title := props["title"]
if title == "" {
title = props["alt"]
}
if title == "" {
title = path.Base(name)
}
alt := props["alt"]
if alt == "" {
alt = name
}
// make the childNode an image - if we can, we also place the alt
childNode.Type = html.ElementNode
childNode.Data = "img"
childNode.DataAtom = atom.Img
childNode.Attr = []html.Attribute{
{Key: "src", Val: link},
{Key: "title", Val: title},
{Key: "alt", Val: alt},
}
if alt == "" {
childNode.Attr = childNode.Attr[:2]
}
} else {
if !absoluteLink {
if ctx.isWikiMarkdown {
link = util.URLJoin("wiki", link)
}
link = util.URLJoin(urlPrefix, link)
}
childNode.Type = html.TextNode
childNode.Data = name
}
if noLink {
linkNode = childNode
} else {
linkNode.Attr = []html.Attribute{{Key: "href", Val: link}}
}
replaceContent(node, m[0], m[1], linkNode)
}
func fullIssuePatternProcessor(ctx *postProcessCtx, node *html.Node) {
if ctx.metas == nil {
return
}
m := getIssueFullPattern().FindStringSubmatchIndex(node.Data)
if m == nil {
return
}
link := node.Data[m[0]:m[1]]
id := "#" + node.Data[m[2]:m[3]]
// extract repo and org name from matched link like
// http://localhost:3000/gituser/myrepo/issues/1
linkParts := strings.Split(path.Clean(link), "/")
matchOrg := linkParts[len(linkParts)-4]
matchRepo := linkParts[len(linkParts)-3]
if matchOrg == ctx.metas["user"] && matchRepo == ctx.metas["repo"] {
// TODO if m[4]:m[5] is not nil, then link is to a comment,
// and we should indicate that in the text somehow
replaceContent(node, m[0], m[1], createLink(link, id, "ref-issue"))
} else {
orgRepoID := matchOrg + "/" + matchRepo + id
replaceContent(node, m[0], m[1], createLink(link, orgRepoID, "ref-issue"))
}
}
func issueIndexPatternProcessor(ctx *postProcessCtx, node *html.Node) {
if ctx.metas == nil {
return
}
var (
found bool
ref *references.RenderizableReference
)
_, exttrack := ctx.metas["format"]
alphanum := ctx.metas["style"] == IssueNameStyleAlphanumeric
// Repos with external issue trackers might still need to reference local PRs
// We need to concern with the first one that shows up in the text, whichever it is
found, ref = references.FindRenderizableReferenceNumeric(node.Data, exttrack && alphanum)
if exttrack && alphanum {
if found2, ref2 := references.FindRenderizableReferenceAlphanumeric(node.Data); found2 {
if !found || ref2.RefLocation.Start < ref.RefLocation.Start {
found = true
ref = ref2
}
}
}
if !found {
return
}
var link *html.Node
reftext := node.Data[ref.RefLocation.Start:ref.RefLocation.End]
if exttrack && !ref.IsPull {
ctx.metas["index"] = ref.Issue
link = createLink(com.Expand(ctx.metas["format"], ctx.metas), reftext, "ref-issue")
} else {
// Path determines the type of link that will be rendered. It's unknown at this point whether
// the linked item is actually a PR or an issue. Luckily it's of no real consequence because
// Gitea will redirect on click as appropriate.
path := "issues"
if ref.IsPull {
path = "pulls"
}
if ref.Owner == "" {
link = createLink(util.URLJoin(setting.AppURL, ctx.metas["user"], ctx.metas["repo"], path, ref.Issue), reftext, "ref-issue")
} else {
link = createLink(util.URLJoin(setting.AppURL, ref.Owner, ref.Name, path, ref.Issue), reftext, "ref-issue")
}
}
if ref.Action == references.XRefActionNone {
replaceContent(node, ref.RefLocation.Start, ref.RefLocation.End, link)
return
}
// Decorate action keywords if actionable
var keyword *html.Node
if references.IsXrefActionable(ref, exttrack, alphanum) {
keyword = createKeyword(node.Data[ref.ActionLocation.Start:ref.ActionLocation.End])
} else {
keyword = &html.Node{
Type: html.TextNode,
Data: node.Data[ref.ActionLocation.Start:ref.ActionLocation.End],
}
}
spaces := &html.Node{
Type: html.TextNode,
Data: node.Data[ref.ActionLocation.End:ref.RefLocation.Start],
}
replaceContentList(node, ref.ActionLocation.Start, ref.RefLocation.End, []*html.Node{keyword, spaces, link})
}
// fullSha1PatternProcessor renders SHA containing URLs
func fullSha1PatternProcessor(ctx *postProcessCtx, node *html.Node) {
if ctx.metas == nil {
return
}
m := anySHA1Pattern.FindStringSubmatchIndex(node.Data)
if m == nil {
return
}
urlFull := node.Data[m[0]:m[1]]
text := base.ShortSha(node.Data[m[2]:m[3]])
// 3rd capture group matches a optional path
subpath := ""
if m[5] > 0 {
subpath = node.Data[m[4]:m[5]]
}
// 4th capture group matches a optional url hash
hash := ""
if m[7] > 0 {
hash = node.Data[m[6]:m[7]][1:]
}
start := m[0]
end := m[1]
// If url ends in '.', it's very likely that it is not part of the
// actual url but used to finish a sentence.
if strings.HasSuffix(urlFull, ".") {
end--
urlFull = urlFull[:len(urlFull)-1]
if hash != "" {
hash = hash[:len(hash)-1]
} else if subpath != "" {
subpath = subpath[:len(subpath)-1]
}
}
if subpath != "" {
text += subpath
}
if hash != "" {
text += " (" + hash + ")"
}
replaceContent(node, start, end, createCodeLink(urlFull, text, "commit"))
}
// emojiShortCodeProcessor for rendering text like :smile: into emoji
func emojiShortCodeProcessor(ctx *postProcessCtx, node *html.Node) {
m := EmojiShortCodeRegex.FindStringSubmatchIndex(node.Data)
if m == nil {
return
}
alias := node.Data[m[0]:m[1]]
alias = strings.ReplaceAll(alias, ":", "")
converted := emoji.FromAlias(alias)
if converted == nil {
// check if this is a custom reaction
s := strings.Join(setting.UI.Reactions, " ") + "gitea"
if strings.Contains(s, alias) {
replaceContent(node, m[0], m[1], createCustomEmoji(alias, "emoji"))
return
}
return
}
replaceContent(node, m[0], m[1], createEmoji(converted.Emoji, "emoji", converted.Description))
}
// emoji processor to match emoji and add emoji class
func emojiProcessor(ctx *postProcessCtx, node *html.Node) {
m := emoji.FindEmojiSubmatchIndex(node.Data)
if m == nil {
return
}
codepoint := node.Data[m[0]:m[1]]
val := emoji.FromCode(codepoint)
if val != nil {
replaceContent(node, m[0], m[1], createEmoji(codepoint, "emoji", val.Description))
}
}
// sha1CurrentPatternProcessor renders SHA1 strings to corresponding links that
// are assumed to be in the same repository.
func sha1CurrentPatternProcessor(ctx *postProcessCtx, node *html.Node) {
if ctx.metas == nil || ctx.metas["user"] == "" || ctx.metas["repo"] == "" || ctx.metas["repoPath"] == "" {
return
}
m := sha1CurrentPattern.FindStringSubmatchIndex(node.Data)
if m == nil {
return
}
hash := node.Data[m[2]:m[3]]
// The regex does not lie, it matches the hash pattern.
// However, a regex cannot know if a hash actually exists or not.
// We could assume that a SHA1 hash should probably contain alphas AND numerics
// but that is not always the case.
// Although unlikely, deadbeef and 1234567 are valid short forms of SHA1 hash
// as used by git and github for linking and thus we have to do similar.
// Because of this, we check to make sure that a matched hash is actually
// a commit in the repository before making it a link.
if _, err := git.NewCommand("rev-parse", "--verify", hash).RunInDirBytes(ctx.metas["repoPath"]); err != nil {
if !strings.Contains(err.Error(), "fatal: Needed a single revision") {
log.Debug("sha1CurrentPatternProcessor git rev-parse: %v", err)
}
return
}
replaceContent(node, m[2], m[3],
createCodeLink(util.URLJoin(setting.AppURL, ctx.metas["user"], ctx.metas["repo"], "commit", hash), base.ShortSha(hash), "commit"))
}
// emailAddressProcessor replaces raw email addresses with a mailto: link.
func emailAddressProcessor(ctx *postProcessCtx, node *html.Node) {
m := emailRegex.FindStringSubmatchIndex(node.Data)
if m == nil {
return
}
mail := node.Data[m[2]:m[3]]
replaceContent(node, m[2], m[3], createLink("mailto:"+mail, mail, "mailto"))
}
// linkProcessor creates links for any HTTP or HTTPS URL not captured by
// markdown.
func linkProcessor(ctx *postProcessCtx, node *html.Node) {
m := common.LinkRegex.FindStringIndex(node.Data)
if m == nil {
return
}
uri := node.Data[m[0]:m[1]]
replaceContent(node, m[0], m[1], createLink(uri, uri, "link"))
}
func genDefaultLinkProcessor(defaultLink string) processor {
return func(ctx *postProcessCtx, node *html.Node) {
ch := &html.Node{
Parent: node,
Type: html.TextNode,
Data: node.Data,
}
node.Type = html.ElementNode
node.Data = "a"
node.DataAtom = atom.A
node.Attr = []html.Attribute{
{Key: "href", Val: defaultLink},
{Key: "class", Val: "default-link"},
}
node.FirstChild, node.LastChild = ch, ch
}
}
// descriptionLinkProcessor creates links for DescriptionHTML
func descriptionLinkProcessor(ctx *postProcessCtx, node *html.Node) {
m := common.LinkRegex.FindStringIndex(node.Data)
if m == nil {
return
}
uri := node.Data[m[0]:m[1]]
replaceContent(node, m[0], m[1], createDescriptionLink(uri, uri))
}
func createDescriptionLink(href, content string) *html.Node {
textNode := &html.Node{
Type: html.TextNode,
Data: content,
}
linkNode := &html.Node{
FirstChild: textNode,
LastChild: textNode,
Type: html.ElementNode,
Data: "a",
DataAtom: atom.A,
Attr: []html.Attribute{
{Key: "href", Val: href},
{Key: "target", Val: "_blank"},
{Key: "rel", Val: "noopener noreferrer"},
},
}
textNode.Parent = linkNode
return linkNode
}