| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| |
| /** |
| * Find language definations. |
| * |
| * Usage: |
| * |
| * import ecLangPlugin from 'echarts/build/rollup-plugin-ec-lang'; |
| * let rollupConfig = { |
| * plugins: [ |
| * ecLangPlugin({lang: 'en'}), |
| * ... |
| * ] |
| * }; |
| */ |
| |
| const {resolve} = require('path'); |
| const {readFileSync} = require('fs'); |
| |
| /** |
| * @param {Object} [opt] |
| * @param {string} [opt.lang=null] null/undefined/'' or 'en' or 'fi' or a file path. |
| */ |
| function getPlugin(opt) { |
| let lang = opt && opt.lang || ''; |
| |
| return { |
| load: function (absolutePath) { |
| if (/\/src\/lang\.js$/.test(absolutePath)) { |
| let langPath = getLangFileInfo(lang).absolutePath; |
| if (langPath) { |
| absolutePath = langPath; |
| } |
| } |
| return readFileSync(absolutePath, 'utf-8'); |
| } |
| }; |
| } |
| |
| /** |
| * @param {string} lang null/undefined/'' or 'en' or 'fi' or a file path. |
| * @return {Object} {isOuter, absolutePath} |
| */ |
| let getLangFileInfo = getPlugin.getLangFileInfo = function (lang) { |
| let absolutePath; |
| let isOuter = false; |
| |
| if (lang) { |
| if (/^[a-zA-Z]{2}$/.test(lang)) { |
| absolutePath = resolve(__dirname, '../', 'src/lang' + lang.toUpperCase() + '.js') |
| } |
| else { |
| isOuter = true; |
| // `lang` is an absolute path or a relative path based on process.cwd(). |
| absolutePath = resolve(lang); |
| } |
| } |
| |
| return {isOuter, absolutePath}; |
| }; |
| |
| module.exports = getPlugin; |