2017-09-23 09:42:16 +00:00
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/**
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* 符合 CommonJS 规范的 模块化加载
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*
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*/
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/*global Java, base*/
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2017-10-10 13:01:43 +00:00
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(function (parent) {
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2017-09-23 09:42:16 +00:00
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'use strict';
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var File = Java.type("java.io.File");
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2017-10-11 18:06:07 +00:00
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var paths = [parent, '', parent + '/core', parent + '/modules'];
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2017-09-23 09:42:16 +00:00
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/**
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* 解析模块名称为文件
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* 按照下列顺序查找
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* 当前目录 ./
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* 父目录 ../
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* 核心目录 /core
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* 模块目录 /modules
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* @param name 模块名称
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*/
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2017-10-11 17:39:51 +00:00
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function resolve(name, parent) {
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2017-09-23 09:42:16 +00:00
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if (_canonical(name)) {
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name = _canonical(name);
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}
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2017-10-11 18:06:07 +00:00
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// 解析本地目录
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if(name.startsWith('./') || name.startsWith('../')){
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return resolveAsFile(parent, name) || resolveAsDirectory(parent, name) || undefined;
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} else {
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// 查找可能存在的路径
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for(var i in paths) {
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var path = paths[i];
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var result = resolveAsFile(path, name) || resolveAsDirectory(path, name);
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if (result) {
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return result;
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}
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2017-10-11 17:39:51 +00:00
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}
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}
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return undefined;
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2017-10-10 13:01:43 +00:00
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}
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/**
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* 解析文件
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* @returns {*}
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*/
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2017-10-11 17:39:51 +00:00
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function resolveAsFile(dir, file) {
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var file = ext.notNull(dir) ? new File(dir, file) : new File(file);
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if (file.isFile()) {
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2017-10-10 13:01:43 +00:00
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return file;
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2017-09-23 09:42:16 +00:00
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}
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2017-10-11 17:39:51 +00:00
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var ef = new File(normalizeName(_canonical(file)));
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if (ef.isFile()) {
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return ef;
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}
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}
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/**
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* 解析目录
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* @returns {*}
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*/
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function resolveAsDirectory(dir, file) {
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2017-10-14 06:27:22 +00:00
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var dir = ext.notNull(dir) ? new File(dir, file) : new File(file);
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var _package = new File(dir, 'package.json');
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2017-10-11 17:39:51 +00:00
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if (_package.exists()) {
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var json = JSON.parse(base.read(_package));
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if (json.main) {
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2017-10-14 06:27:22 +00:00
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return resolveAsFile(dir, json.main);
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2017-10-11 17:39:51 +00:00
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}
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}
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// if no package or package.main exists, look for index.js
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2017-10-14 06:27:22 +00:00
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return resolveAsFile(dir, 'index.js');
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2017-10-10 13:01:43 +00:00
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}
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function normalizeName(fileName, ext) {
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var extension = ext || '.js';
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if (fileName.endsWith(extension)) {
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return fileName;
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2017-09-23 09:42:16 +00:00
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}
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2017-10-10 13:01:43 +00:00
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return fileName + extension;
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2017-09-23 09:42:16 +00:00
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}
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/**
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* 预编译模块
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2017-09-27 12:40:57 +00:00
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* @param file
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2017-09-23 09:42:16 +00:00
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* @returns {Object}
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*/
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2017-10-14 06:27:22 +00:00
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function compileJs(file, optional) {
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2017-09-27 12:40:57 +00:00
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var cacheFile = _cacheFile(file);
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2017-10-14 06:27:22 +00:00
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var origin = base.read(file);
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if (optional.hook) {
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origin = optional.hook(origin);
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}
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base.save(cacheFile, "(function (module, exports, require, __DIR__, __FILE__) {" + origin + "});");
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2017-10-10 13:01:43 +00:00
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// 使用 load 可以保留行号和文件名称
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2017-09-27 12:40:57 +00:00
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var obj = load(cacheFile);
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base.delete(cacheFile);
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return obj;
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2017-09-23 09:42:16 +00:00
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}
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2017-10-10 13:01:43 +00:00
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/**
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* 编译模块
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* @param id
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* @param name
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* @param file
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* @returns {Object}
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*/
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2017-10-14 06:27:22 +00:00
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function compileModule(id, name, file, optional) {
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2017-10-10 13:01:43 +00:00
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log.d('加载模块 %s 位于 %s', name, id);
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// noinspection JSUnresolvedVariable
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var module = {
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id: id,
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exports: {},
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loaded: false,
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require: exports(file.parentFile)
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};
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try {
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2017-10-14 06:27:22 +00:00
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var compiledWrapper = compileJs(file, optional);
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2017-10-10 13:01:43 +00:00
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compiledWrapper.apply(module.exports, [
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2017-10-12 13:07:38 +00:00
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module, module.exports, module.require, file.parentFile, file
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2017-10-10 13:01:43 +00:00
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]);
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log.d('模块 %s 编译成功!', name);
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module.loaded = true;
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} catch (ex) {
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2017-10-14 06:27:22 +00:00
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log.console("§4警告! §b模块 §a%s §4编译失败! ERR: %s", name, ex);
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2017-10-10 13:01:43 +00:00
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log.d(ex);
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}
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return module;
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}
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2017-09-23 09:42:16 +00:00
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/**
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* 获得文件规范路径
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* @param file
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* @returns {*}
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* @private
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*/
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function _canonical(file) {
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// noinspection JSUnresolvedVariable
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return file.canonicalPath;
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}
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2017-09-27 12:40:57 +00:00
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function _cacheFile(file) {
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return cacheDir + "/" + file.name;
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}
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2017-09-23 09:42:16 +00:00
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/**
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* 加载模块
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* @param name 模块名称
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2017-10-09 13:17:24 +00:00
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* @param path 路径
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2017-09-23 09:42:16 +00:00
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* @returns {*}
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* @private
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*/
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2017-10-14 06:27:22 +00:00
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function _require(name, path, optional) {
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2017-10-10 13:01:43 +00:00
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var file = resolve(name, path);
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if (file === undefined) {
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log.w("模块 %s 加载失败! 未找到该模块!", name);
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2017-10-11 17:39:51 +00:00
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return {exports:{}};
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2017-10-10 13:01:43 +00:00
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}
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2017-10-14 06:27:22 +00:00
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if (!optional) optional = { cache: true }
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2017-10-11 17:39:51 +00:00
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// 重定向文件名称和类型
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2017-09-23 09:42:16 +00:00
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name = file.name.split(".")[0];
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var id = _canonical(file);
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var module = cacheModules[id];
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2017-10-14 06:27:22 +00:00
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if (optional.cache && module) {
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2017-09-23 09:42:16 +00:00
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return module;
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}
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2017-10-14 06:27:22 +00:00
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cacheModules[id] = module = compileModule(id, name, file, optional);
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2017-10-09 13:17:24 +00:00
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return module;
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2017-09-23 09:42:16 +00:00
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}
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/**
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* 闭包方法
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* @param parent 父目录
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* @returns {Function}
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*/
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function exports(parent) {
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2017-10-14 06:27:22 +00:00
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return function (path, optional) {
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return _require(path, parent, optional).exports;
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2017-09-23 09:42:16 +00:00
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};
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}
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2017-10-10 13:01:43 +00:00
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var cacheDir = parent + "/runtime";
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2017-09-23 10:30:14 +00:00
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2017-09-23 09:42:16 +00:00
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// 等于 undefined 说明 parent 是一个字符串 需要转成File
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2017-09-27 12:40:57 +00:00
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// 可能有更加准确的方案
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2017-09-23 09:42:16 +00:00
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if (_canonical(parent) === undefined) {
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parent = new File(parent);
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}
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var cacheModules = [];
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log.d("初始化 require 模块组件 父目录 %s", _canonical(parent));
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return exports(parent);
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});
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