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@ -6,10 +6,12 @@ package markup
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import (
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"fmt"
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"html"
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"html/template"
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"io"
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"strings"
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"code.gitea.io/gitea/modules/highlight"
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"code.gitea.io/gitea/modules/htmlutil"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/markup"
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"code.gitea.io/gitea/modules/setting"
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@ -20,29 +22,32 @@ import (
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)
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func init() {
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markup.RegisterRenderer(Renderer{})
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markup.RegisterRenderer(renderer{})
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}
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// Renderer implements markup.Renderer for orgmode
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type Renderer struct{}
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type renderer struct{}
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var _ markup.PostProcessRenderer = (*Renderer)(nil)
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var (
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_ markup.Renderer = (*renderer)(nil)
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_ markup.PostProcessRenderer = (*renderer)(nil)
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)
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// Name implements markup.Renderer
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func (Renderer) Name() string {
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func (renderer) Name() string {
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return "orgmode"
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}
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// NeedPostProcess implements markup.PostProcessRenderer
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func (Renderer) NeedPostProcess() bool { return true }
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func (renderer) NeedPostProcess() bool { return true }
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// Extensions implements markup.Renderer
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func (Renderer) Extensions() []string {
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func (renderer) Extensions() []string {
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return []string{".org"}
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}
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// SanitizerRules implements markup.Renderer
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func (Renderer) SanitizerRules() []setting.MarkupSanitizerRule {
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func (renderer) SanitizerRules() []setting.MarkupSanitizerRule {
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return []setting.MarkupSanitizerRule{}
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}
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@ -56,10 +61,7 @@ func Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error
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panic(err)
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}
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}()
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var w strings.Builder
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if _, err := w.WriteString(`<pre>`); err != nil {
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return ""
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}
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w := &strings.Builder{}
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lexer := lexers.Get(lang)
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if lexer == nil && lang == "" {
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@ -70,26 +72,20 @@ func Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error
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lang = strings.ToLower(lexer.Config().Name)
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}
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if lexer == nil {
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// include language-x class as part of commonmark spec
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if _, err := w.WriteString(`<code class="chroma language-` + lang + `">`); err != nil {
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if err := ctx.RenderInternal.FormatWithSafeAttrs(w, `<pre><code class="chroma language-%s">`, lang); err != nil {
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return ""
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}
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if lexer == nil {
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if _, err := w.WriteString(html.EscapeString(source)); err != nil {
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return ""
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}
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} else {
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// include language-x class as part of commonmark spec
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if _, err := w.WriteString(`<code class="chroma language-` + lang + `">`); err != nil {
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return ""
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}
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lexer = chroma.Coalesce(lexer)
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if _, err := w.WriteString(string(highlight.CodeFromLexer(lexer, source))); err != nil {
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return ""
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}
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}
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if _, err := w.WriteString("</code></pre>"); err != nil {
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return ""
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}
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@ -97,11 +93,7 @@ func Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error
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return w.String()
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}
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w := &Writer{
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HTMLWriter: htmlWriter,
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Ctx: ctx,
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}
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w := &orgWriter{rctx: ctx, HTMLWriter: htmlWriter}
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htmlWriter.ExtendingWriter = w
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res, err := org.New().Silent().Parse(input, "").Write(w)
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@ -122,17 +114,18 @@ func RenderString(ctx *markup.RenderContext, content string) (string, error) {
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}
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// Render renders orgmode string to HTML string
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func (Renderer) Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error {
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func (renderer) Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error {
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return Render(ctx, input, output)
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}
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// Writer implements org.Writer
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type Writer struct {
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type orgWriter struct {
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*org.HTMLWriter
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Ctx *markup.RenderContext
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rctx *markup.RenderContext
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}
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func (r *Writer) resolveLink(kind, link string) string {
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var _ org.Writer = (*orgWriter)(nil)
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func (r *orgWriter) resolveLink(kind, link string) string {
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link = strings.TrimPrefix(link, "file:")
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if !strings.HasPrefix(link, "#") && // not a URL fragment
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!markup.IsFullURLString(link) {
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@ -142,39 +135,42 @@ func (r *Writer) resolveLink(kind, link string) string {
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kind = org.RegularLink{URL: link}.Kind()
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}
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if kind == "image" || kind == "video" {
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link = r.Ctx.RenderHelper.ResolveLink(link, markup.LinkTypeMedia)
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link = r.rctx.RenderHelper.ResolveLink(link, markup.LinkTypeMedia)
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} else {
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link = r.Ctx.RenderHelper.ResolveLink(link, markup.LinkTypeDefault)
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link = r.rctx.RenderHelper.ResolveLink(link, markup.LinkTypeDefault)
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}
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}
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return link
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}
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// WriteRegularLink renders images, links or videos
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func (r *Writer) WriteRegularLink(l org.RegularLink) {
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func (r *orgWriter) WriteRegularLink(l org.RegularLink) {
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link := r.resolveLink(l.Kind(), l.URL)
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printHTML := func(html string, a ...any) {
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_, _ = fmt.Fprint(r, htmlutil.HTMLFormat(html, a...))
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}
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// Inspired by https://github.com/niklasfasching/go-org/blob/6eb20dbda93cb88c3503f7508dc78cbbc639378f/org/html_writer.go#L406-L427
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switch l.Kind() {
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case "image":
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if l.Description == nil {
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_, _ = fmt.Fprintf(r, `<img src="%s" alt="%s" />`, link, link)
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printHTML(`<img src="%s" alt="%s">`, link, link)
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} else {
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imageSrc := r.resolveLink(l.Kind(), org.String(l.Description...))
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_, _ = fmt.Fprintf(r, `<a href="%s"><img src="%s" alt="%s" /></a>`, link, imageSrc, imageSrc)
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printHTML(`<a href="%s"><img src="%s" alt="%s"></a>`, link, imageSrc, imageSrc)
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}
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case "video":
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if l.Description == nil {
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_, _ = fmt.Fprintf(r, `<video src="%s">%s</video>`, link, link)
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printHTML(`<video src="%s">%s</video>`, link, link)
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} else {
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videoSrc := r.resolveLink(l.Kind(), org.String(l.Description...))
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_, _ = fmt.Fprintf(r, `<a href="%s"><video src="%s">%s</video></a>`, link, videoSrc, videoSrc)
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printHTML(`<a href="%s"><video src="%s">%s</video></a>`, link, videoSrc, videoSrc)
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}
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default:
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description := link
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var description any = link
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if l.Description != nil {
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description = r.WriteNodesAsString(l.Description...)
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description = template.HTML(r.WriteNodesAsString(l.Description...)) // orgmode HTMLWriter outputs HTML content
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}
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_, _ = fmt.Fprintf(r, `<a href="%s">%s</a>`, link, description)
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printHTML(`<a href="%s">%s</a>`, link, description)
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}
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}
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