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docs/script/i18n/homogenize-frontmatter.js
2021-05-14 00:10:28 +00:00

73 lines
2.8 KiB
JavaScript
Executable File

#!/usr/bin/env node
// [start-readme]
//
// Run this script to fix known frontmatter errors by copying values from english file
// Translatable properties are designated in the frontmatter JSON schema
//
// [end-readme]
const fs = require('fs')
const path = require('path')
const matter = require('gray-matter')
const walk = require('walk-sync')
const readFileAsync = require('../../lib/readfile-async')
const fm = require('../../lib/frontmatter')
// Run!
main()
async function main () {
const translationDir = path.posix.join(__dirname, '../../translations')
const translatedMarkdownFiles = walk(translationDir)
.filter(filename => {
return filename.includes('/content/') &&
filename.endsWith('.md') &&
!filename.endsWith('README.md')
})
.map(filename => `translations/${filename}`)
const extractFrontmatter = async (path) => {
const fileContents = await readFileAsync(path, 'utf8')
return fm(fileContents)
}
for (const relPath of translatedMarkdownFiles) {
const localisedAbsPath = path.posix.join(__dirname, '../..', relPath)
// find the corresponding english file by removing the first 2 path segments: /translations/<language code>
const engAbsPath = path.posix.join(__dirname, '../..', relPath.split(path.sep).slice(2).join(path.sep))
if (!fs.existsSync(engAbsPath)) {
// This happens when an English file has been moved or deleted and translations are not in sync.
// It does mean this script will not homogenous those translated files, but the docs site does not
// load translated files that don't correlate to an English file, so those translated files can't break things.
console.log(`English file does not exist: ${engAbsPath}`)
continue
}
const localisedFrontmatter = await extractFrontmatter(localisedAbsPath)
if (!localisedFrontmatter) continue
// Load frontmatter from the source english file
const englishFrontmatter = await extractFrontmatter(engAbsPath)
// Look for differences between the english and localised non-translatable properties
let overwroteSomething = false
for (const prop in localisedFrontmatter.data) {
if (!fm.schema.properties[prop].translatable && englishFrontmatter.data[prop] && localisedFrontmatter.data[prop] !== englishFrontmatter.data[prop]) {
localisedFrontmatter.data[prop] = englishFrontmatter.data[prop]
overwroteSomething = true
}
}
// rewrite the localised file, if it changed
if (overwroteSomething) {
const toWrite = matter.stringify(localisedFrontmatter.content, localisedFrontmatter.data, { lineWidth: 10000, forceQuotes: true })
fs.writeFileSync(localisedAbsPath, toWrite)
// if it's fixable, output its path to store in the log file
console.log(relPath)
}
}
}