318 lines
7.8 KiB
Go
318 lines
7.8 KiB
Go
// SiYuan - Build Your Eternal Digital Garden
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// Copyright (c) 2020-present, b3log.org
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package treenode
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import (
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"bytes"
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"strings"
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"github.com/88250/lute"
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"github.com/88250/lute/ast"
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"github.com/88250/lute/html"
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"github.com/88250/lute/lex"
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"github.com/88250/lute/parse"
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"github.com/siyuan-note/siyuan/kernel/util"
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)
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func NodeStaticMdContent(node *ast.Node, luteEngine *lute.Lute) (md, content string) {
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md = FormatNode(node, luteEngine)
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content = NodeStaticContent(node)
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return
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}
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func FormatNode(node *ast.Node, luteEngine *lute.Lute) string {
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markdown, err := lute.FormatNodeSync(node, luteEngine.ParseOptions, luteEngine.RenderOptions)
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if nil != err {
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root := TreeRoot(node)
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util.LogFatalf("format node [%s] in tree [%s] failed: %s", node.ID, root.ID, err)
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}
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return markdown
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}
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func NodeStaticContent(node *ast.Node) string {
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if nil == node {
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return ""
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}
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if ast.NodeDocument == node.Type {
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return node.IALAttr("title")
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}
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buf := bytes.Buffer{}
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buf.Grow(4096)
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lastSpace := false
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ast.Walk(node, func(n *ast.Node, entering bool) ast.WalkStatus {
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if !entering {
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return ast.WalkContinue
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}
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if n.IsContainerBlock() {
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if !lastSpace {
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buf.WriteString(" ")
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lastSpace = true
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}
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return ast.WalkContinue
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}
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switch n.Type {
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case ast.NodeTagOpenMarker, ast.NodeTagCloseMarker:
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buf.WriteByte('#')
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case ast.NodeBlockRef:
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buf.WriteString(GetDynamicBlockRefText(n))
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lastSpace = false
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return ast.WalkSkipChildren
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case ast.NodeText, ast.NodeLinkText, ast.NodeLinkTitle, ast.NodeFileAnnotationRefText, ast.NodeFootnotesRef,
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ast.NodeCodeSpanContent, ast.NodeInlineMathContent, ast.NodeCodeBlockCode, ast.NodeMathBlockContent, ast.NodeHTMLBlock:
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buf.Write(n.Tokens)
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case ast.NodeBackslash:
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buf.WriteByte(lex.ItemBackslash)
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case ast.NodeBackslashContent:
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buf.Write(n.Tokens)
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}
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lastSpace = false
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return ast.WalkContinue
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})
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return strings.TrimSpace(buf.String())
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}
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func FirstLeafBlock(node *ast.Node) (ret *ast.Node) {
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ast.Walk(node, func(n *ast.Node, entering bool) ast.WalkStatus {
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if !entering || n.IsMarker() {
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return ast.WalkContinue
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}
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if !n.IsContainerBlock() {
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ret = n
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return ast.WalkStop
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}
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return ast.WalkContinue
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})
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return
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}
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func CountBlockNodes(node *ast.Node) (ret int) {
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ast.Walk(node, func(n *ast.Node, entering bool) ast.WalkStatus {
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if !entering || !n.IsBlock() || ast.NodeList == n.Type || ast.NodeBlockquote == n.Type || ast.NodeSuperBlock == n.Type {
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return ast.WalkContinue
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}
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if "1" == n.IALAttr("fold") {
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ret++
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return ast.WalkSkipChildren
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}
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ret++
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return ast.WalkContinue
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})
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return
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}
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func ParentNodes(node *ast.Node) (parents []*ast.Node) {
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for n := node.Parent; nil != n; n = n.Parent {
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parents = append(parents, n)
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if ast.NodeDocument == n.Type {
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return
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}
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}
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return
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}
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func ParentBlock(node *ast.Node) *ast.Node {
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for p := node.Parent; nil != p; p = p.Parent {
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if "" != p.ID && p.IsBlock() {
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return p
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}
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}
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return nil
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}
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func GetNodeInTree(tree *parse.Tree, id string) (ret *ast.Node) {
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ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
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if !entering {
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return ast.WalkContinue
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}
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if id == n.ID {
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ret = n
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ret.Box = tree.Box
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ret.Path = tree.Path
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return ast.WalkStop
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}
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return ast.WalkContinue
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})
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return
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}
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func GetDocTitleImgPath(root *ast.Node) (ret string) {
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if nil == root {
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return
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}
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const background = "background-image: url("
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titleImg := root.IALAttr("title-img")
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titleImg = strings.TrimSpace(titleImg)
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titleImg = html.UnescapeString(titleImg)
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titleImg = strings.ReplaceAll(titleImg, "background-image:url(", background)
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if !strings.Contains(titleImg, background) {
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return
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}
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start := strings.Index(titleImg, background) + len(background)
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end := strings.LastIndex(titleImg, ")")
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ret = titleImg[start:end]
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ret = strings.TrimPrefix(ret, "\"")
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ret = strings.TrimPrefix(ret, "'")
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ret = strings.TrimSuffix(ret, "\"")
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ret = strings.TrimSuffix(ret, "'")
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return ret
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}
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var typeAbbrMap = map[string]string{
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// 块级元素
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"NodeDocument": "d",
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"NodeHeading": "h",
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"NodeList": "l",
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"NodeListItem": "i",
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"NodeCodeBlock": "c",
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"NodeMathBlock": "m",
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"NodeTable": "t",
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"NodeBlockquote": "b",
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"NodeSuperBlock": "s",
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"NodeParagraph": "p",
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"NodeHTMLBlock": "html",
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"NodeBlockQueryEmbed": "query_embed",
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"NodeKramdownBlockIAL": "ial",
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"NodeIFrame": "iframe",
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"NodeWidget": "widget",
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"NodeThematicBreak": "tb",
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"NodeVideo": "video",
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"NodeAudio": "audio",
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// 行级元素
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"NodeText": "text",
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"NodeLinkText": "link_text",
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"NodeTag": "tag",
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"NodeCodeSpan": "code_span",
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"NodeInlineMath": "inline_math",
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"NodeBlockRefID": "ref_id",
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"NodeEmphasis": "em",
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"NodeStrong": "strong",
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"NodeStrikethrough": "strikethrough",
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"NodeMark": "mark",
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"NodeSup": "sup",
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"NodeSub": "sub",
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"NodeKbd": "kbd",
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"NodeUnderline": "underline",
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}
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var abbrTypeMap = map[string]string{}
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func init() {
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for typ, abbr := range typeAbbrMap {
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abbrTypeMap[abbr] = typ
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}
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}
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func TypeAbbr(nodeType string) string {
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return typeAbbrMap[nodeType]
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}
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func FromAbbrType(abbrType string) string {
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return abbrTypeMap[abbrType]
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}
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func SubTypeAbbr(n *ast.Node) string {
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switch n.Type {
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case ast.NodeList, ast.NodeListItem:
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if 0 == n.ListData.Typ {
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return "u"
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}
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if 1 == n.ListData.Typ {
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return "o"
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}
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if 3 == n.ListData.Typ {
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return "t"
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}
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case ast.NodeHeading:
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if 1 == n.HeadingLevel {
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return "h1"
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}
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if 2 == n.HeadingLevel {
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return "h2"
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}
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if 3 == n.HeadingLevel {
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return "h3"
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}
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if 4 == n.HeadingLevel {
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return "h4"
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}
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if 5 == n.HeadingLevel {
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return "h5"
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}
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if 6 == n.HeadingLevel {
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return "h6"
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}
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}
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return ""
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}
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func GetLegacyDynamicBlockRefDefIDs(node *ast.Node) (ret []string) {
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ast.Walk(node, func(n *ast.Node, entering bool) ast.WalkStatus {
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if !entering {
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return ast.WalkContinue
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}
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if ast.NodeBlockRefID == n.Type && ast.NodeCloseParen == n.Next.Type {
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ret = append(ret, n.TokensStr())
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return ast.WalkSkipChildren
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}
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return ast.WalkContinue
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})
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return
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}
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func SetDynamicBlockRefText(blockRef *ast.Node, refText string) {
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if nil == blockRef {
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return
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}
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idNode := blockRef.ChildByType(ast.NodeBlockRefID)
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if nil == idNode {
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return
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}
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var spacesRefTexts []*ast.Node // 可能会有多个空格，或者遗留错误插入的锚文本节点，这里做一次订正
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for n := idNode.Next; ast.NodeCloseParen != n.Type; n = n.Next {
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spacesRefTexts = append(spacesRefTexts, n)
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}
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for _, toRemove := range spacesRefTexts {
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toRemove.Unlink()
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}
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refText = strings.TrimSpace(refText)
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idNode.InsertAfter(&ast.Node{Type: ast.NodeBlockRefDynamicText, Tokens: []byte(refText)})
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idNode.InsertAfter(&ast.Node{Type: ast.NodeBlockRefSpace})
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}
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func GetDynamicBlockRefText(blockRef *ast.Node) string {
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refText := blockRef.ChildByType(ast.NodeBlockRefText)
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if nil != refText {
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return refText.Text()
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}
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refText = blockRef.ChildByType(ast.NodeBlockRefDynamicText)
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if nil != refText {
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return refText.Text()
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}
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return "ref resolve failed"
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}
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