mirror of
https://github.com/facebook/docusaurus.git
synced 2025-04-29 02:08:36 +02:00
404 lines
12 KiB
JavaScript
404 lines
12 KiB
JavaScript
/**
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* Copyright (c) 2017-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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function execute(port) {
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const translation = require("./translation.js");
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const CWD = process.cwd();
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const express = require("express");
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const React = require("react");
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const request = require("request");
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const renderToStaticMarkup = require("react-dom/server").renderToStaticMarkup;
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const fs = require("fs-extra");
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const os = require("os");
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const path = require("path");
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const readMetadata = require("./readMetadata.js");
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const toSlug = require("../core/toSlug.js");
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const mkdirp = require("mkdirp");
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const glob = require("glob");
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const translate = require("./translate.js");
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let siteConfig = require(CWD + "/siteConfig.js");
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/**
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* Removes a module from the cache
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*/
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function purgeCache(moduleName) {
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// Traverse the cache looking for the files
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// loaded by the specified module name
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searchCache(moduleName, function(mod) {
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delete require.cache[mod.id];
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});
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// Remove cached paths to the module.
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Object.keys(module.constructor._pathCache).forEach(function(cacheKey) {
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if (cacheKey.indexOf(moduleName) > 0) {
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delete module.constructor._pathCache[cacheKey];
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}
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});
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}
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/**
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* Traverses the cache to search for all the cached
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* files of the specified module name
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*/
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function searchCache(moduleName, callback) {
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// Resolve the module identified by the specified name
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let mod = require.resolve(moduleName);
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// Check if the module has been resolved and found within
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// the cache
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if (mod && (mod = require.cache[mod]) !== undefined) {
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// Recursively go over the results
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(function traverse(mod) {
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// Go over each of the module's children and
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// traverse them
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mod.children.forEach(function(child) {
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traverse(child);
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});
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// Call the specified callback providing the
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// found cached module
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callback(mod);
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})(mod);
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}
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}
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/****************************************************************************/
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let Metadata;
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let readCategories;
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function reloadMetadataCategories() {
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readMetadata.generateDocsMetadata();
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purgeCache("../core/metadata.js");
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Metadata = require("../core/metadata.js");
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purgeCache("./readCategories.js");
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readCategories = require("./readCategories.js");
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let layouts = {};
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for (let i = 0; i < Metadata.length; i++) {
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let layout = Metadata[i].layout;
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if (layouts[layout] !== true) {
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layouts[layout] = true;
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readCategories(layout);
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}
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}
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}
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/****************************************************************************/
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const TABLE_OF_CONTENTS_TOKEN = "<AUTOGENERATED_TABLE_OF_CONTENTS>";
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const insertTableOfContents = rawContent => {
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const regexp = /\n###\s+(`.*`.*)\n/g;
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let match;
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const headers = [];
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while ((match = regexp.exec(rawContent))) {
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headers.push(match[1]);
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}
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const tableOfContents = headers
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.map(header => ` - [${header}](#${toSlug(header)})`)
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.join("\n");
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return rawContent.replace(TABLE_OF_CONTENTS_TOKEN, tableOfContents);
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};
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/****************************************************************************/
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console.log("server.js triggered...");
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reloadMetadataCategories();
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/* handle all requests for document pages */
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const app = express().get(/docs\/[\s\S]*html$/, (req, res) => {
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purgeCache(CWD + "/siteConfig.js");
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siteConfig = require(CWD + "/siteConfig.js");
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console.log(req.path);
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reloadMetadataCategories();
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let links = {};
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for (let i = 0; i < Metadata.length; i++) {
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const metadata = Metadata[i];
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links[metadata.permalink] =
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"docs/" + metadata.language + "/" + metadata.source;
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}
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let mdToHtml = {};
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for (let i = 0; i < Metadata.length; i++) {
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const metadata = Metadata[i];
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mdToHtml["/docs/" + metadata.language + "/" + metadata.source] =
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siteConfig.baseUrl + metadata.permalink;
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}
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let file = links[req.path.toString().replace(siteConfig.baseUrl, "")];
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file = CWD + "/../" + file;
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console.log(file);
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const result = readMetadata.processMetadata(file);
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const metadata = result.metadata;
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const language = metadata.language;
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let rawContent = result.rawContent;
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/* generate table of contents if appropriate */
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if (rawContent && rawContent.indexOf(TABLE_OF_CONTENTS_TOKEN) !== -1) {
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rawContent = insertTableOfContents(rawContent);
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}
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/* replace any links to markdown files to their website html links */
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Object.keys(mdToHtml).forEach(function(key, index) {
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rawContent = rawContent.replace(new RegExp(key, "g"), mdToHtml[key]);
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});
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purgeCache("../core/DocsLayout.js");
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const DocsLayout = require("../core/DocsLayout.js");
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const docComp = (
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<DocsLayout metadata={metadata} language={language} config={siteConfig}>
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{rawContent}
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</DocsLayout>
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);
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res.send(renderToStaticMarkup(docComp));
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});
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/* handle all requests for blog pages and posts */
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app.get(/blog\/[\s\S]*html$/, (req, res) => {
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purgeCache(CWD + "/siteConfig.js");
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siteConfig = require(CWD + "/siteConfig.js");
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if (fs.existsSync(__dirname + "../core/MetadataBlog.js")) {
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purgeCache("../core/MetadataBlog.js");
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fs.removeSync(__dirname + "../core/MetadataBlog.js");
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}
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readMetadata.generateBlogMetadata();
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MetadataBlog = require("../core/MetadataBlog.js");
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/* generate all of the blog pages */
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purgeCache("../core/BlogPageLayout.js");
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const BlogPageLayout = require("../core/BlogPageLayout.js");
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const blogPages = {};
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/* make blog pages with 10 posts per page */
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const perPage = 10;
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for (
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let page = 0;
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page < Math.ceil(MetadataBlog.length / perPage);
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page++
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) {
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let language = "en";
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const metadata = { page: page, perPage: perPage };
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const blogPageComp = (
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<BlogPageLayout
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metadata={metadata}
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language={language}
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config={siteConfig}
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/>
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);
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const str = renderToStaticMarkup(blogPageComp);
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let path = (page > 0 ? "page" + (page + 1) : "") + "/index.html";
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blogPages[path] = str;
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}
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let parts = req.path.toString().split("blog/");
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// send corresponding blog page if appropriate
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if (parts[1] === "index.html") {
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res.send(blogPages["/index.html"]);
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} else if (parts[1].endsWith("/index.html")) {
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res.send(blogPages[parts[1]]);
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} else if (parts[1].match(/page([0-9]+)/)) {
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if (parts[1].endsWith("/")) {
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res.send(blogPages[parts[1] + "index.html"]);
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} else {
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res.send(blogPages[parts[1] + "/index.html"]);
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}
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} else {
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// else send corresponding blog post
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let file = parts[1];
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file = file.replace(/\.html$/, ".md");
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file = file.replace(new RegExp("/", "g"), "-");
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file = CWD + "/../blog/" + file;
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const result = readMetadata.extractMetadata(
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fs.readFileSync(file, { encoding: "utf8" })
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);
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const rawContent = result.rawContent;
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const metadata = Object.assign(
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{ path: req.path.toString().split("blog/")[1], content: rawContent },
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result.metadata
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);
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metadata.id = metadata.title;
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let language = "en";
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purgeCache("../core/BlogPostLayout.js");
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const BlogPostLayout = require("../core/BlogPostLayout.js");
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const blogPostComp = (
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<BlogPostLayout
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metadata={metadata}
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language={language}
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config={siteConfig}
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>
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{rawContent}
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</BlogPostLayout>
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);
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res.send(renderToStaticMarkup(blogPostComp));
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}
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});
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/* handle all other main pages */
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app.get("*.html", (req, res) => {
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purgeCache(CWD + "/siteConfig.js");
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siteConfig = require(CWD + "/siteConfig.js");
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console.log(req.path);
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/* look for user provided html file first */
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let htmlFile = req.path.toString().replace(siteConfig.baseUrl, "");
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htmlFile = CWD + "/pages/" + htmlFile;
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if (
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fs.existsSync(htmlFile) ||
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fs.existsSync(
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(htmlFile = htmlFile.replace(
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path.basename(htmlFile),
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"en/" + path.basename(htmlFile)
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))
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)
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) {
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res.send(fs.readFileSync(htmlFile, { encoding: "utf8" }));
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return;
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}
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/* look for user provided react file either in specified path or in path for english files */
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let file = req.path.toString().replace(/\.html$/, ".js");
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file = file.replace(siteConfig.baseUrl, "");
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let userFile = CWD + "/pages/" + file;
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let language = "en";
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const regexLang = /(.*)\/.*\.html$/;
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const match = regexLang.exec(req.path);
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const parts = match[1].split("/");
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const enabledLangTags = [];
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for (let i = 0; i < translation["languages"].length; i++) {
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enabledLangTags.push(translation["languages"][i].tag);
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}
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for (let i = 0; i < parts.length; i++) {
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if (enabledLangTags.indexOf(parts[i]) !== -1) {
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language = parts[i];
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}
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}
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let englishFile = CWD + "/pages/" + file;
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if (language !== "en") {
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englishFile = englishFile.replace("/" + language + "/", "/en/");
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}
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/* check for: a file for the page, an english file for page with unspecified language,
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english file for the page */
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if (
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fs.existsSync(userFile) ||
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fs.existsSync(
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(userFile = userFile.replace(
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path.basename(userFile),
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"en/" + path.basename(userFile)
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))
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) ||
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fs.existsSync((userFile = englishFile))
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) {
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/* copy into docusaurus so require paths work */
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let parts = userFile.split("pages/");
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let tempFile = __dirname + "/../pages/" + parts[1];
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tempFile = tempFile.replace(
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path.basename(file),
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"temp" + path.basename(file)
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);
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mkdirp.sync(tempFile.replace(new RegExp("/[^/]*$"), ""));
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fs.copySync(userFile, tempFile);
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/* render into a string */
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purgeCache(tempFile);
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const ReactComp = require(tempFile);
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purgeCache("../core/Site.js");
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const Site = require("../core/Site.js");
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translate.setLanguage(language);
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const str = renderToStaticMarkup(
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<Site language={language} config={siteConfig}>
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<ReactComp language={language} />
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</Site>
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);
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fs.removeSync(tempFile);
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res.send(str);
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} else {
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console.log(req.path);
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res.send("No file found");
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}
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});
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/* generate the main.css file by concatenating user provided css to the end */
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app.get(/main\.css$/, (req, res) => {
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const mainCssPath =
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__dirname +
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"/../static/" +
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req.path.toString().replace(siteConfig.baseUrl, "/");
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let cssContent = fs.readFileSync(mainCssPath, { encoding: "utf8" });
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let files = glob.sync(CWD + "/static/**/*.css");
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files.forEach(file => {
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cssContent =
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cssContent + "\n" + fs.readFileSync(file, { encoding: "utf8" });
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});
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cssContent = cssContent
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.toString()
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.replace(
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new RegExp("{primaryColor}", "g"),
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siteConfig.colors.primaryColor
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);
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cssContent = cssContent.replace(
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new RegExp("{secondaryColor}", "g"),
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siteConfig.colors.secondaryColor
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);
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cssContent = cssContent.replace(
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new RegExp("{prismColor}", "g"),
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siteConfig.colors.prismColor
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);
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res.send(cssContent);
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});
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/* serve static content first from user folder then from docusaurus */
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app.use(siteConfig.baseUrl, express.static(CWD + "/static"));
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app.use(siteConfig.baseUrl, express.static(__dirname + "/../static"));
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app.get(/\/[^\.]*\/?$/, (req, res) => {
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if (req.path.toString().endsWith("/")) {
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request.get(
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"http://localhost:3000" + req.path + "index.html",
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(err, response, body) => {
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if (!err) {
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res.send(body);
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}
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}
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);
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} else {
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request.get(
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"http://localhost:3000" + req.path + "/index.html",
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(err, response, body) => {
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if (!err) {
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res.send(body);
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}
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}
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);
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}
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});
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app.listen(port);
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console.log("listening on port: " + port);
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}
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module.exports = execute;
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