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docs/script/i18n/homogenize-frontmatter.js
Kevin Heis 9ba7e6bc34 Update homogenize-frontmatter script to not stop on errors and concurrency yes (#19480)
* Update homogenize-frontmatter script to not stop on errors and concurrency yes

* Update homogenize-frontmatter.js

* Speed up by avoiding exists check

Node docs: Using fs.exists() to check for the existence of a file before calling fs.open(), fs.readFile() or fs.writeFile() is not recommended. Doing so introduces a race condition, since other processes may change the file's state between the two calls. Instead, user code should open/read/write the file directly and handle the error raised if the file does not exist.

* Update homogenize-frontmatter.js

Co-authored-by: Zeke Sikelianos <zeke@github.com>
2021-05-24 16:27:50 +00:00

83 lines
3.0 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/promises')
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}`)
console.log(
(await Promise.all(
translatedMarkdownFiles
.map(async relPath => updateTranslatedMarkdownFile(relPath)
.catch(e => `Error in ${relPath}: ${e.message}`)
)
)).filter(Boolean).join('\n')
)
}
async function extractFrontmatter (path) {
const fileContents = await readFileAsync(path, 'utf8')
return fm(fileContents)
}
async function updateTranslatedMarkdownFile (relPath) {
const localisedAbsPath = path.posix.join(__dirname, '../..', relPath)
// find the corresponding english file by removing the first 2 path segments: /translations/<language code>
const engAbsPath = path.posix.join(__dirname, '../..', relPath.split(path.sep).slice(2).join(path.sep))
// Load frontmatter from the source english file
let englishFrontmatter
try {
englishFrontmatter = await extractFrontmatter(engAbsPath)
} catch {
// This happens when an English file has been moved or deleted and translations are not in sync.
// It does mean this script will not homogenous those translated files, but the docs site does not
// load translated files that don't correlate to an English file, so those translated files can't break things.
// return `${relPath}: English file does not exist: ${engAbsPath}`
return // silence
}
const localisedFrontmatter = await extractFrontmatter(localisedAbsPath)
if (!localisedFrontmatter) return `${relPath}: No localised frontmatter`
// 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 })
await fs.writeFile(localisedAbsPath, toWrite)
// return `${relPath}: updated`
// silence
}
}