0ec47e0246
* Add read-frontmatter.js * Use it * Page static read/init are async now * Fix some blockers * I'm confused * Fix some more bugs * Use frontmatter schema, ensure end fence exists * Fix a bug * Still read full contents for index.md files * Remove comment * Only get ToC items for index pages * Readd frontmatter error and verdadero handling * Fix some borked tests * Simplify the code * Add a comment * Remove redundant variable * Re-simplify the Page construction * End chunk _after_ endline * Just use Page.init
48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
const fs = require('fs')
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const fm = require('./frontmatter')
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const endLine = '\n---\n'
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/**
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* Reads the given filepath, but only up until `endLine`, using streams to
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* read each chunk and close the stream early.
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*/
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async function readFrontmatter (filepath) {
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const readStream = fs.createReadStream(filepath, { encoding: 'utf8', emitClose: true })
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return new Promise((resolve, reject) => {
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let frontmatter = ''
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readStream
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.on('data', function (chunk) {
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const endOfFrontmatterIndex = chunk.indexOf(endLine)
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if (endOfFrontmatterIndex !== -1) {
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frontmatter += chunk.slice(0, endOfFrontmatterIndex + endLine.length)
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// Stop early!
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readStream.destroy()
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} else {
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frontmatter += chunk
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}
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})
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.on('error', (error) => reject(error))
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// Stream has been destroyed and file has been closed
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.on('close', () => resolve(frontmatter))
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})
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}
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/**
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* Read only the frontmatter from a file
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*/
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module.exports = async function fmfromf (filepath, languageCode) {
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let fileContent = filepath.endsWith('index.md')
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// For index files, we need to read the whole file because they contain ToC info
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? await fs.promises.readFile(filepath, 'utf8')
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// For everything else, only read the frontmatter
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: await readFrontmatter(filepath)
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// TODO remove this when crowdin-support issue 66 has been resolved
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if (languageCode !== 'en' && fileContent.includes(': verdadero')) {
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fileContent = fileContent.replace(': verdadero', ': true')
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}
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return fm(fileContent, { filepath })
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}
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