245 lines
10 KiB
JavaScript
245 lines
10 KiB
JavaScript
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import {bdConfig, bdplugins, bdthemes} from "../0globals";
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import pluginModule from "./pluginModule";
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import themeModule from "./themeModule";
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import Utils from "./utils";
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const path = require("path");
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const fs = require("fs");
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const Module = require("module").Module;
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Module.globalPaths.push(path.resolve(require("electron").remote.app.getAppPath(), "node_modules"));
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class MetaError extends Error {
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constructor(message) {
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super(message);
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this.name = "MetaError";
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}
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}
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const originalJSRequire = Module._extensions[".js"];
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const originalCSSRequire = Module._extensions[".css"] ? Module._extensions[".css"] : () => {return null;};
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const splitRegex = /[^\S\r\n]*?(?:\r\n|\n)[^\S\r\n]*?\*[^\S\r\n]?/;
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const escapedAtRegex = /^\\@/;
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export default new class ContentManager {
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constructor() {
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this.timeCache = {};
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this.watchers = {};
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Module._extensions[".js"] = this.getContentRequire("plugin");
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Module._extensions[".css"] = this.getContentRequire("theme");
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}
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get pluginsFolder() {return this._pluginsFolder || (this._pluginsFolder = fs.realpathSync(path.resolve(bdConfig.dataPath + "plugins/")));}
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get themesFolder() {return this._themesFolder || (this._themesFolder = fs.realpathSync(path.resolve(bdConfig.dataPath + "themes/")));}
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watchContent(contentType) {
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if (this.watchers[contentType]) return;
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const isPlugin = contentType === "plugin";
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const baseFolder = isPlugin ? this.pluginsFolder : this.themesFolder;
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const fileEnding = isPlugin ? ".plugin.js" : ".theme.css";
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this.watchers[contentType] = fs.watch(baseFolder, {persistent: false}, async (eventType, filename) => {
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if (!eventType || !filename || !filename.endsWith(fileEnding)) return;
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await new Promise(r => setTimeout(r, 50));
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try {fs.statSync(path.resolve(baseFolder, filename));}
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catch (err) {
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if (err.code !== "ENOENT") return;
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delete this.timeCache[filename];
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if (isPlugin) return pluginModule.unloadPlugin(filename);
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return themeModule.unloadTheme(filename);
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}
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if (!fs.statSync(path.resolve(baseFolder, filename)).isFile()) return;
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const stats = fs.statSync(path.resolve(baseFolder, filename));
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if (!stats || !stats.mtime || !stats.mtime.getTime()) return;
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if (typeof(stats.mtime.getTime()) !== "number") return;
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if (this.timeCache[filename] == stats.mtime.getTime()) return;
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this.timeCache[filename] = stats.mtime.getTime();
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if (eventType == "rename") {
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if (isPlugin) pluginModule.loadPlugin(filename);
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else themeModule.loadTheme(filename);
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}
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if (eventType == "change") {
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if (isPlugin) pluginModule.reloadPlugin(filename);
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else themeModule.reloadTheme(filename);
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}
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});
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}
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unwatchContent(contentType) {
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if (!this.watchers[contentType]) return;
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this.watchers[contentType].close();
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delete this.watchers[contentType];
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}
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extractMeta(content) {
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const firstLine = content.split("\n")[0];
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const hasOldMeta = firstLine.includes("//META");
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if (hasOldMeta) return this.parseOldMeta(content);
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const hasNewMeta = firstLine.includes("/**");
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if (hasNewMeta) return this.parseNewMeta(content);
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throw new MetaError("META was not found.");
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}
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parseOldMeta(content) {
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const meta = content.split("\n")[0];
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const rawMeta = meta.substring(meta.lastIndexOf("//META") + 6, meta.lastIndexOf("*//"));
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if (meta.indexOf("META") < 0) throw new MetaError("META was not found.");
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const parsed = Utils.testJSON(rawMeta);
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if (!parsed) throw new MetaError("META could not be parsed.");
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if (!parsed.name) throw new MetaError("META missing name data.");
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parsed.format = "json";
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return parsed;
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}
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parseNewMeta(content) {
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const block = content.split("/**", 2)[1].split("*/", 1)[0];
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const out = {};
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let field = "";
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let accum = "";
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for (const line of block.split(splitRegex)) {
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if (line.length === 0) continue;
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if (line.charAt(0) === "@" && line.charAt(1) !== " ") {
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out[field] = accum;
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const l = line.indexOf(" ");
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field = line.substr(1, l - 1);
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accum = line.substr(l + 1);
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}
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else {
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accum += " " + line.replace("\\n", "\n").replace(escapedAtRegex, "@");
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}
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}
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out[field] = accum.trim();
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delete out[""];
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out.format = "jsdoc";
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return out;
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}
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getContentRequire(type) {
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const isPlugin = type === "plugin";
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const self = this;
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const originalRequire = isPlugin ? originalJSRequire : originalCSSRequire;
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return function(module, filename) {
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const baseFolder = isPlugin ? self.pluginsFolder : self.themesFolder;
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const possiblePath = path.resolve(baseFolder, path.basename(filename));
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if (!fs.existsSync(possiblePath) || filename !== fs.realpathSync(possiblePath)) return Reflect.apply(originalRequire, this, arguments);
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let content = fs.readFileSync(filename, "utf8");
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content = Utils.stripBOM(content);
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const stats = fs.statSync(filename);
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const meta = self.extractMeta(content);
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meta.filename = path.basename(filename);
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meta.added = stats.atimeMs;
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meta.modified = stats.mtimeMs;
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meta.size = stats.size;
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if (!isPlugin) {
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meta.css = content;
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if (meta.format == "json") meta.css = meta.css.split("\n").slice(1).join("\n");
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content = `module.exports = ${JSON.stringify(meta)};`;
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}
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if (isPlugin) {
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module._compile(content, module.filename);
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const didExport = !Utils.isEmpty(module.exports);
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if (didExport) {
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meta.type = module.exports;
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module.exports = meta;
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content = "";
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}
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else {
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content += `\nmodule.exports = ${JSON.stringify(meta)};\nmodule.exports.type = ${meta.exports || meta.name};`;
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}
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}
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module._compile(content, filename);
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};
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}
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makePlaceholderPlugin(data) {
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return {plugin: {
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start: () => {},
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getName: () => {return data.name || data.filename;},
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getAuthor: () => {return "???";},
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getDescription: () => {return data.message ? data.message : "This plugin was unable to be loaded. Check the author's page for updates.";},
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getVersion: () => {return "???";}
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},
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name: data.name || data.filename,
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filename: data.filename,
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source: data.source ? data.source : "",
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website: data.website ? data.website : ""
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};
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}
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loadContent(filename, type) {
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if (typeof(filename) === "undefined" || typeof(type) === "undefined") return;
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const isPlugin = type === "plugin";
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const baseFolder = isPlugin ? this.pluginsFolder : this.themesFolder;
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try {__non_webpack_require__(path.resolve(baseFolder, filename));}
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catch (error) {return {name: filename, file: filename, message: "Could not be compiled.", error: {message: error.message, stack: error.stack}};}
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const content = __non_webpack_require__(path.resolve(baseFolder, filename));
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content.id = Utils.escapeID(content.name);
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if (isPlugin) {
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if (!content.type) return;
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try {
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content.plugin = new content.type();
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delete bdplugins[content.plugin.getName()];
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bdplugins[content.plugin.getName()] = content;
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}
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catch (error) {return {name: filename, file: filename, message: "Could not be constructed.", error: {message: error.message, stack: error.stack}};}
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}
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else {
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delete bdthemes[content.name];
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bdthemes[content.name] = content;
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}
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}
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unloadContent(filename, type) {
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if (typeof(filename) === "undefined" || typeof(type) === "undefined") return;
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const isPlugin = type === "plugin";
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const baseFolder = isPlugin ? this.pluginsFolder : this.themesFolder;
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try {
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delete __non_webpack_require__.cache[__non_webpack_require__.resolve(path.resolve(baseFolder, filename))];
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}
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catch (err) {return {name: filename, file: filename, message: "Could not be unloaded.", error: {message: err.message, stack: err.stack}};}
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}
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isLoaded(filename, type) {
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const isPlugin = type === "plugin";
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const baseFolder = isPlugin ? this.pluginsFolder : this.themesFolder;
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try {__non_webpack_require__.cache[__non_webpack_require__.resolve(path.resolve(baseFolder, filename))];}
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catch (err) {return false;}
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return true;
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}
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reloadContent(filename, type) {
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const cantUnload = this.unloadContent(filename, type);
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if (cantUnload) return cantUnload;
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return this.loadContent(filename, type);
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}
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loadNewContent(type) {
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const isPlugin = type === "plugin";
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const fileEnding = isPlugin ? ".plugin.js" : ".theme.css";
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const basedir = isPlugin ? this.pluginsFolder : this.themesFolder;
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const files = fs.readdirSync(basedir);
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const contentList = Object.values(isPlugin ? bdplugins : bdthemes);
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const removed = contentList.filter(t => !files.includes(t.filename)).map(c => isPlugin ? c.plugin.getName() : c.name);
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const added = files.filter(f => !contentList.find(t => t.filename == f) && f.endsWith(fileEnding) && fs.statSync(path.resolve(basedir, f)).isFile());
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return {added, removed};
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}
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loadAllContent(type) {
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const isPlugin = type === "plugin";
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const fileEnding = isPlugin ? ".plugin.js" : ".theme.css";
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const basedir = isPlugin ? this.pluginsFolder : this.themesFolder;
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const errors = [];
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const files = fs.readdirSync(basedir);
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for (const filename of files) {
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if (!fs.statSync(path.resolve(basedir, filename)).isFile() || !filename.endsWith(fileEnding)) continue;
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const error = this.loadContent(filename, type);
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if (error) errors.push(error);
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}
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return errors;
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}
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loadPlugins() {return this.loadAllContent("plugin");}
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loadThemes() {return this.loadAllContent("theme");}
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}; |