")
- preTag = []byte("")
- preCloseTag = []byte("")
- codeTag = []byte("")
- codeCloseTag = []byte("")
- pTag = []byte("")
- pCloseTag = []byte("
")
- blockquoteTag = []byte("")
- blockquoteCloseTag = []byte("
")
- hrTag = []byte("
")
- hrXHTMLTag = []byte("
")
- ulTag = []byte("")
- ulCloseTag = []byte("
")
- olTag = []byte("")
- olCloseTag = []byte("
")
- dlTag = []byte("")
- dlCloseTag = []byte("
")
- liTag = []byte("")
- liCloseTag = []byte("")
- ddTag = []byte("")
- ddCloseTag = []byte("")
- dtTag = []byte("")
- dtCloseTag = []byte("")
- tableTag = []byte("")
- tableCloseTag = []byte("
")
- tdTag = []byte("")
- thTag = []byte("")
- theadTag = []byte("")
- theadCloseTag = []byte("")
- tbodyTag = []byte("")
- tbodyCloseTag = []byte("")
- trTag = []byte("")
- trCloseTag = []byte("
")
- h1Tag = []byte("")
- h2Tag = []byte("")
- h3Tag = []byte("")
- h4Tag = []byte("")
- h5Tag = []byte("")
- h6Tag = []byte("")
-
- footnotesDivBytes = []byte("\n\n")
-)
-
-func headingTagsFromLevel(level int) ([]byte, []byte) {
- if level <= 1 {
- return h1Tag, h1CloseTag
- }
- switch level {
- case 2:
- return h2Tag, h2CloseTag
- case 3:
- return h3Tag, h3CloseTag
- case 4:
- return h4Tag, h4CloseTag
- case 5:
- return h5Tag, h5CloseTag
- }
- return h6Tag, h6CloseTag
-}
-
-func (r *HTMLRenderer) outHRTag(w io.Writer) {
- if r.Flags&UseXHTML == 0 {
- r.out(w, hrTag)
- } else {
- r.out(w, hrXHTMLTag)
- }
-}
-
-// RenderNode is a default renderer of a single node of a syntax tree. For
-// block nodes it will be called twice: first time with entering=true, second
-// time with entering=false, so that it could know when it's working on an open
-// tag and when on close. It writes the result to w.
-//
-// The return value is a way to tell the calling walker to adjust its walk
-// pattern: e.g. it can terminate the traversal by returning Terminate. Or it
-// can ask the walker to skip a subtree of this node by returning SkipChildren.
-// The typical behavior is to return GoToNext, which asks for the usual
-// traversal to the next node.
-func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkStatus {
- attrs := []string{}
- switch node.Type {
- case Text:
- if r.Flags&Smartypants != 0 {
- var tmp bytes.Buffer
- escapeHTML(&tmp, node.Literal)
- r.sr.Process(w, tmp.Bytes())
- } else {
- if node.Parent.Type == Link {
- escLink(w, node.Literal)
- } else {
- escapeHTML(w, node.Literal)
- }
- }
- case Softbreak:
- r.cr(w)
- // TODO: make it configurable via out(renderer.softbreak)
- case Hardbreak:
- if r.Flags&UseXHTML == 0 {
- r.out(w, brTag)
- } else {
- r.out(w, brXHTMLTag)
- }
- r.cr(w)
- case Emph:
- if entering {
- r.out(w, emTag)
- } else {
- r.out(w, emCloseTag)
- }
- case Strong:
- if entering {
- r.out(w, strongTag)
- } else {
- r.out(w, strongCloseTag)
- }
- case Del:
- if entering {
- r.out(w, delTag)
- } else {
- r.out(w, delCloseTag)
- }
- case HTMLSpan:
- if r.Flags&SkipHTML != 0 {
- break
- }
- r.out(w, node.Literal)
- case Link:
- // mark it but don't link it if it is not a safe link: no smartypants
- dest := node.LinkData.Destination
- if needSkipLink(r.Flags, dest) {
- if entering {
- r.out(w, ttTag)
- } else {
- r.out(w, ttCloseTag)
- }
- } else {
- if entering {
- dest = r.addAbsPrefix(dest)
- var hrefBuf bytes.Buffer
- hrefBuf.WriteString("href=\"")
- escLink(&hrefBuf, dest)
- hrefBuf.WriteByte('"')
- attrs = append(attrs, hrefBuf.String())
- if node.NoteID != 0 {
- r.out(w, footnoteRef(r.FootnoteAnchorPrefix, node))
- break
- }
- attrs = appendLinkAttrs(attrs, r.Flags, dest)
- if len(node.LinkData.Title) > 0 {
- var titleBuff bytes.Buffer
- titleBuff.WriteString("title=\"")
- escapeHTML(&titleBuff, node.LinkData.Title)
- titleBuff.WriteByte('"')
- attrs = append(attrs, titleBuff.String())
- }
- r.tag(w, aTag, attrs)
- } else {
- if node.NoteID != 0 {
- break
- }
- r.out(w, aCloseTag)
- }
- }
- case Image:
- if r.Flags&SkipImages != 0 {
- return SkipChildren
- }
- if entering {
- dest := node.LinkData.Destination
- dest = r.addAbsPrefix(dest)
- if r.disableTags == 0 {
- //if options.safe && potentiallyUnsafe(dest) {
- //out(w, `![`)
- //} else {
- r.out(w, []byte(`<img src=]( "`))
- escapeHTML(w, node.LinkData.Title)
- }
- r.out(w, []byte(`")
`))
- }
- }
- case Code:
- r.out(w, codeTag)
- escapeAllHTML(w, node.Literal)
- r.out(w, codeCloseTag)
- case Document:
- break
- case Paragraph:
- if skipParagraphTags(node) {
- break
- }
- if entering {
- // TODO: untangle this clusterfuck about when the newlines need
- // to be added and when not.
- if node.Prev != nil {
- switch node.Prev.Type {
- case HTMLBlock, List, Paragraph, Heading, CodeBlock, BlockQuote, HorizontalRule:
- r.cr(w)
- }
- }
- if node.Parent.Type == BlockQuote && node.Prev == nil {
- r.cr(w)
- }
- r.out(w, pTag)
- } else {
- r.out(w, pCloseTag)
- if !(node.Parent.Type == Item && node.Next == nil) {
- r.cr(w)
- }
- }
- case BlockQuote:
- if entering {
- r.cr(w)
- r.out(w, blockquoteTag)
- } else {
- r.out(w, blockquoteCloseTag)
- r.cr(w)
- }
- case HTMLBlock:
- if r.Flags&SkipHTML != 0 {
- break
- }
- r.cr(w)
- r.out(w, node.Literal)
- r.cr(w)
- case Heading:
- headingLevel := r.HTMLRendererParameters.HeadingLevelOffset + node.Level
- openTag, closeTag := headingTagsFromLevel(headingLevel)
- if entering {
- if node.IsTitleblock {
- attrs = append(attrs, `class="title"`)
- }
- if node.HeadingID != "" {
- id := r.ensureUniqueHeadingID(node.HeadingID)
- if r.HeadingIDPrefix != "" {
- id = r.HeadingIDPrefix + id
- }
- if r.HeadingIDSuffix != "" {
- id = id + r.HeadingIDSuffix
- }
- attrs = append(attrs, fmt.Sprintf(`id="%s"`, id))
- }
- r.cr(w)
- r.tag(w, openTag, attrs)
- } else {
- r.out(w, closeTag)
- if !(node.Parent.Type == Item && node.Next == nil) {
- r.cr(w)
- }
- }
- case HorizontalRule:
- r.cr(w)
- r.outHRTag(w)
- r.cr(w)
- case List:
- openTag := ulTag
- closeTag := ulCloseTag
- if node.ListFlags&ListTypeOrdered != 0 {
- openTag = olTag
- closeTag = olCloseTag
- }
- if node.ListFlags&ListTypeDefinition != 0 {
- openTag = dlTag
- closeTag = dlCloseTag
- }
- if entering {
- if node.IsFootnotesList {
- r.out(w, footnotesDivBytes)
- r.outHRTag(w)
- r.cr(w)
- }
- r.cr(w)
- if node.Parent.Type == Item && node.Parent.Parent.Tight {
- r.cr(w)
- }
- r.tag(w, openTag[:len(openTag)-1], attrs)
- r.cr(w)
- } else {
- r.out(w, closeTag)
- //cr(w)
- //if node.parent.Type != Item {
- // cr(w)
- //}
- if node.Parent.Type == Item && node.Next != nil {
- r.cr(w)
- }
- if node.Parent.Type == Document || node.Parent.Type == BlockQuote {
- r.cr(w)
- }
- if node.IsFootnotesList {
- r.out(w, footnotesCloseDivBytes)
- }
- }
- case Item:
- openTag := liTag
- closeTag := liCloseTag
- if node.ListFlags&ListTypeDefinition != 0 {
- openTag = ddTag
- closeTag = ddCloseTag
- }
- if node.ListFlags&ListTypeTerm != 0 {
- openTag = dtTag
- closeTag = dtCloseTag
- }
- if entering {
- if itemOpenCR(node) {
- r.cr(w)
- }
- if node.ListData.RefLink != nil {
- slug := slugify(node.ListData.RefLink)
- r.out(w, footnoteItem(r.FootnoteAnchorPrefix, slug))
- break
- }
- r.out(w, openTag)
- } else {
- if node.ListData.RefLink != nil {
- slug := slugify(node.ListData.RefLink)
- if r.Flags&FootnoteReturnLinks != 0 {
- r.out(w, footnoteReturnLink(r.FootnoteAnchorPrefix, r.FootnoteReturnLinkContents, slug))
- }
- }
- r.out(w, closeTag)
- r.cr(w)
- }
- case CodeBlock:
- attrs = appendLanguageAttr(attrs, node.Info)
- r.cr(w)
- r.out(w, preTag)
- r.tag(w, codeTag[:len(codeTag)-1], attrs)
- escapeAllHTML(w, node.Literal)
- r.out(w, codeCloseTag)
- r.out(w, preCloseTag)
- if node.Parent.Type != Item {
- r.cr(w)
- }
- case Table:
- if entering {
- r.cr(w)
- r.out(w, tableTag)
- } else {
- r.out(w, tableCloseTag)
- r.cr(w)
- }
- case TableCell:
- openTag := tdTag
- closeTag := tdCloseTag
- if node.IsHeader {
- openTag = thTag
- closeTag = thCloseTag
- }
- if entering {
- align := cellAlignment(node.Align)
- if align != "" {
- attrs = append(attrs, fmt.Sprintf(`align="%s"`, align))
- }
- if node.Prev == nil {
- r.cr(w)
- }
- r.tag(w, openTag, attrs)
- } else {
- r.out(w, closeTag)
- r.cr(w)
- }
- case TableHead:
- if entering {
- r.cr(w)
- r.out(w, theadTag)
- } else {
- r.out(w, theadCloseTag)
- r.cr(w)
- }
- case TableBody:
- if entering {
- r.cr(w)
- r.out(w, tbodyTag)
- // XXX: this is to adhere to a rather silly test. Should fix test.
- if node.FirstChild == nil {
- r.cr(w)
- }
- } else {
- r.out(w, tbodyCloseTag)
- r.cr(w)
- }
- case TableRow:
- if entering {
- r.cr(w)
- r.out(w, trTag)
- } else {
- r.out(w, trCloseTag)
- r.cr(w)
- }
- default:
- panic("Unknown node type " + node.Type.String())
- }
- return GoToNext
-}
-
-// RenderHeader writes HTML document preamble and TOC if requested.
-func (r *HTMLRenderer) RenderHeader(w io.Writer, ast *Node) {
- r.writeDocumentHeader(w)
- if r.Flags&TOC != 0 {
- r.writeTOC(w, ast)
- }
-}
-
-// RenderFooter writes HTML document footer.
-func (r *HTMLRenderer) RenderFooter(w io.Writer, ast *Node) {
- if r.Flags&CompletePage == 0 {
- return
- }
- io.WriteString(w, "\n