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Diffstat (limited to 'src/rehype/admonition-title-to-heading.js')
| -rw-r--r-- | src/rehype/admonition-title-to-heading.js | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/rehype/admonition-title-to-heading.js b/src/rehype/admonition-title-to-heading.js new file mode 100644 index 00000000..d84b27b2 --- /dev/null +++ b/src/rehype/admonition-title-to-heading.js @@ -0,0 +1,31 @@ +import {visit} from 'unist-util-visit'; + +const plugin = (options) => { + const transformer = async (ast) => { + let hId = null; + let hContent = null; + visit(ast, 'element', (node, index, parent) => { + if (/^h[2-6]$/.test(node.tagName) && node.properties && node.properties.id) { + // h2～h6のタグを見つけたら + hId = node.properties.id; + hContent = node.children && node.children[0] ? node.children[0].value : ''; + // h3～h6タグの隣にあるdivタグを探す + const nextNode = parent.children[index + 1]; + if (nextNode && nextNode.tagName === 'admonition') { + // 該当のdiv要素を見つけたらHタグの内容とline-5の#以降の文字列が一致した場合 + const contentAfterHash = nextNode.properties.title ? nextNode.properties.title.replace(/^#+/, '').trim() : ''; + + if (contentAfterHash === hContent.trim()) { + // Hタグのidを取得しそれをdivのidに設定 + nextNode.properties.id = hId; + // Hタグを削除 + parent.children.splice(index, 1); + } + } + } + }); + }; + return transformer; +}; + +export default plugin;
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