35 lines
961 B
JavaScript
35 lines
961 B
JavaScript
import {escape} from './utils';
|
|
|
|
/*
|
|
* global mermaid
|
|
*/
|
|
const mermaidChart = (code) => {
|
|
try {
|
|
// eslint-disable-next-line
|
|
mermaid.parse(code)
|
|
return `<div class="mermaid">${escape(code)}</div>`
|
|
} catch ({ str, hash }) {
|
|
return `<pre>${str}</pre>`
|
|
}
|
|
}
|
|
|
|
const MermaidPlugin = (md) => {
|
|
const origin = md.renderer.rules.fence.bind(md.renderer.rules)
|
|
md.renderer.rules.fence = (tokens, idx, options, env, slf) => {
|
|
const token = tokens[idx]
|
|
const code = token.content.trim()
|
|
if (typeof token.info === 'string' && token.info.trim() === 'mermaid') {
|
|
return mermaidChart(code)
|
|
}
|
|
const firstLine = code.split(/\n/)[0].trim()
|
|
if (firstLine === 'gantt' ||
|
|
firstLine === 'sequenceDiagram' ||
|
|
firstLine === 'erDiagram' ||
|
|
firstLine.match(/^graph (?:TB|BT|RL|LR|TD);?$/)) {
|
|
return mermaidChart(code)
|
|
}
|
|
return origin(tokens, idx, options, env, slf)
|
|
}
|
|
}
|
|
|
|
export default MermaidPlugin
|