var gulp = require('gulp')
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var $ = require('gulp-load-plugins')()
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var fs = require('fs')
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var path = require('path')
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var del = require('del')
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// var colors = require('colors')
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var child_process = require('child_process')
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var theme = {}
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var themeList = require('./src/element-ui/config.js').filter(item => !item.hasBuild)
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var styleFileDir = './src/assets/scss'
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var styleFileDirTemp = `${styleFileDir}-temp`
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var themeFileDir = './public/element-theme'
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var et = require('element-theme')
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var etOptions = require('./package.json')['element-theme']
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var themeFileName = etOptions.config.replace(/.*\/(.+\.scss)/, '$1')
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/**
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* 构建生成主题
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*/
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gulp.task('themes', () => {
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if (themeList.length <= 0) { return del(styleFileDirTemp) }
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// 删除临时文件，保证本次操作正常执行
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// del(styleFileDirTemp)
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console.log('del(styleFileDirTemp)')
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// 拷贝一份scss样式文件夹，作为构建的临时处理文件夹
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// child_process.spawnSync('cp', ['-r', styleFileDir, styleFileDirTemp])
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console.log('copy styleFileDirTemp')
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// 拷贝element组件scss变量样式文件至临时处理文件夹中，并修改相应配置信息
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// child_process.spawnSync('cp', ['-r', etOptions.config, styleFileDirTemp])
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etOptions.config = `${styleFileDirTemp}/${themeFileName}`
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// 开始构建生成
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fnCreate(themeList)
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function fnCreate (themeList) {
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if (themeList.length >= 1) {
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// 保存当前构建生成的主题对象
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theme = themeList[0]
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console.log('\n')
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console.log('-------------------- 待构建，主题 -------------------------')
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console.log(themeList)
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console.log('\n')
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console.log('-------------------- 构建中，主题 -------------------------')
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console.log(theme)
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console.log('\n')
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// 修改.scss临时文件中的$--color-primary主题变量值
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var data = fs.readFileSync(etOptions.config, 'utf8')
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var result = data.replace(/\$--color-primary:(.*) !default;/, `$--color-primary:${theme.color} !default;`)
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fs.writeFileSync(path.resolve(etOptions.config), result)
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// 修改aui.scss临时文件中引入element组件主题变量文件路径
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var data = fs.readFileSync(`${styleFileDirTemp}/aui.scss`, 'utf8')
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var result = data.replace(new RegExp(`(@import \")(.*\/)(${themeFileName}\";)`), '$1./$3')
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fs.writeFileSync(path.resolve(`${styleFileDirTemp}/aui.scss`), result)
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// 调用element-theme插件，生成element组件主题
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etOptions.out = `${themeFileDir}/${theme.name}`
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et.run(etOptions, () => {
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// 生成后，构建同主题色aui.css项目主题
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gulp.start(['styles'], () => {
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// 递归下一步
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themeList.splice(0, 1)
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fnCreate(themeList)
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})
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})
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} else {
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// 删除临时文件
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del(styleFileDirTemp)
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console.log('\n')
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console.log('-------------------- 构建完毕，删除临时文件 -------------------------')
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console.log(styleFileDirTemp)
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console.log('\n')
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// 删除主题不需要的部分文件
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var files = [
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`${themeFileDir}/**/*.css`,
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`!${themeFileDir}/**/index.css`,
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`!${themeFileDir}/**/aui.css`,
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`!${themeFileDir}/**/fonts`
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]
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del(files)
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console.log('-------------------- 构建完毕，删除主题独立组件文件 -------------------------')
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console.log(files)
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console.log('\n')
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}
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}
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})
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gulp.task('styles', () => {
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return gulp.src([`${styleFileDirTemp}/aui.scss`])
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.pipe($.sass().on('error', $.sass.logError))
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.pipe($.autoprefixer({
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browsers: etOptions.browsers,
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cascade: false
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}))
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.pipe($.cleanCss())
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.pipe($.rename('aui.css'))
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.pipe(gulp.dest(`${themeFileDir}/${theme.name}`))
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})
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