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extractCode.js
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extractCode.js
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/* eslint-env node */
/* eslint no-console:0 */
const walkSync = require('walk-sync');
const _ = require('lodash');
const codeBlocks = require('gfm-code-blocks');
const { extname, join, dirname } = require('path');
const { readFileSync, writeFileSync, mkdirSync, existsSync } = require('fs');
// these regexs are used against the lang definition of a code block to identify
// the language. If you only want to check certain types then you should change
// this line
const templatesMatch =
/^(handlebars|html|text|javascript|bash|sh|css|hbs|json|apacheconf)/;
const mdFiles = _.chain(walkSync('guides/release'))
.filter((path) => extname(path) === '.md')
.value();
mdFiles.forEach((filename) => {
const source = readFileSync(
join(__dirname, 'guides', 'release', filename),
'utf-8'
);
// console.log(filename);
const blocks = codeBlocks(source);
const codeOnly = blocks.reduce((prev, current) => {
if (!current.lang) {
console.error(`Missing lang in code block on ${filename}`);
}
if (current.lang.match(templatesMatch)) {
return `${prev}\n\n${current.block}`;
}
console.log(`Ignoring language ${current.lang}`);
return prev;
}, '');
if (codeOnly) {
const newFilename = join(__dirname, 'code', filename);
if (!existsSync(dirname(newFilename))) {
mkdirSync(dirname(newFilename), {
recursive: true,
});
}
writeFileSync(join(__dirname, 'code', filename), codeOnly);
}
});