'use strict';
const fs = require('fs');
const tmp = require('tmp');
const { spawnSync } = require('node:child_process');
function mermaid(config) {
return function(args, content) {
let options = Object.assign({}, config);
let caption = '', configPath = '';
args.forEach(arg => {
const arr = arg.split(':');
if (arr.length == 1) {
caption = arr;
} else {
const [ key, val ] = arr;
options[key] = val;
}
});
let mmdcArgs = [
'-t', options.theme,
'-w', options.width,
'-H', options.height,
'-e', options.format,
'-b', options.background,
'-s', options.scale,
'-i', '-',
'-o', '-'
];
const arr = content.split('');
if (arr.length == 2) {
const mmdConfig = arr[0];
content = arr[1];
const tmpFile = tmp.fileSync();
configPath = tmpFile.name;
fs.writeFileSync(configPath, mmdConfig);
}
if (configPath !== '') {
mmdcArgs.push('-c', configPath);
}
const result = spawnSync(options.mmdcPath, mmdcArgs, {
cwd: process.cwd(),
env: process.env,
input: content,
encoding: 'utf8',
timeout: options.timeout
});
if (result.status === 0) {
if (result.stderr) {
console.warn(result.stderr);
}
const path = 'data:image/svg+xml;base64,' + Buffer.from(result.stdout).toString('base64');
if (caption != '') {
return `