mirror of
https://github.com/facebook/docusaurus.git
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92 lines
2.7 KiB
JavaScript
92 lines
2.7 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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// split markdown header
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function splitHeader(content) {
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// New line characters need to handle all operating systems.
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const lines = content.split(/\r?\n/);
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if (lines[0] !== '---') {
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return {};
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}
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let i = 1;
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for (; i < lines.length - 1; ++i) {
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if (lines[i] === '---') {
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break;
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}
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}
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return {
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header: lines.slice(1, i + 1).join('\n'),
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content: lines.slice(i + 1).join('\n'),
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};
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}
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// Extract markdown metadata header
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function extractMetadata(content) {
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const metadata = {};
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const both = splitHeader(content);
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// if no content returned, then that means there was no header, and both.header is the content
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if (!both.content) {
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if (!both.header) {
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// if no both returned, then that means there was no header and no content => we return the current content of the file
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return {metadata, rawContent: content};
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}
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return {metadata, rawContent: both.header};
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}
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// New line characters => to handle all operating systems.
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const lines = both.header.split(/\r?\n/);
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// Loop that add to metadata the current content of the fields of the header
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// Like the format:
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// id:
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// title:
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// original_id:
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for (let i = 0; i < lines.length - 1; ++i) {
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const keyvalue = lines[i].split(':');
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const key = keyvalue[0].trim();
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let value = keyvalue.slice(1).join(':').trim();
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try {
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value = JSON.parse(value);
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} catch (err) {
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// Ignore the error as it means it's not a JSON value.
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}
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metadata[key] = value;
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}
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return {metadata, rawContent: both.content};
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}
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// mdToHtml is a map from a markdown file name to its html link, used to
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// change relative markdown links that work on GitHub into actual site links
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function mdToHtml(Metadata, siteConfig) {
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const {baseUrl, docsUrl} = siteConfig;
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const result = {};
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Object.keys(Metadata).forEach((id) => {
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const metadata = Metadata[id];
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if (metadata.language !== 'en') {
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return;
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}
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let htmlLink = baseUrl + metadata.permalink.replace('/next/', '/');
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const baseDocsPart = `${baseUrl}${docsUrl ? `${docsUrl}/` : ''}`;
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const i18nDocsRegex = new RegExp(`^${baseDocsPart}en/`);
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const docsRegex = new RegExp(`^${baseDocsPart}`);
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if (i18nDocsRegex.test(htmlLink)) {
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htmlLink = htmlLink.replace(i18nDocsRegex, `${baseDocsPart}en/VERSION/`);
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} else {
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htmlLink = htmlLink.replace(docsRegex, `${baseDocsPart}VERSION/`);
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}
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result[metadata.versioned_source] = htmlLink;
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});
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return result;
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}
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module.exports = {
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extractMetadata,
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mdToHtml,
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};
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