自己写的一个gulp工具

对项目进行打包

var gulp = require('gulp')
var gutil = require('gulp-util') //杂项功能
var uglify = require('gulp-uglify')//js
var minifycss = require('gulp-clean-css') //css
var clean = require('gulp-clean')//清理文件
var filter = require('gulp-filter');
var watchPath = require('gulp-watch-path')//watch
var combiner = require('stream-combiner2')//配合gulp-watch-path
var argv = require('yargs').argv//用于判断命令行参数，
var runSequence = require('run-sequence')//控制task顺序
var fs= require('fs')
var config= require("./config")
/*
配置文件路径
*/
   
var handleError = function (err) {
    var colors = gutil.colors;
    console.log('\n')
    gutil.log(colors.red('Error!'))
    gutil.log('fileName: ' + colors.red(err.fileName))
    gutil.log('lineNumber: ' + colors.red(err.lineNumber))
    gutil.log('message: ' + err.message)
    gutil.log('plugin: ' + colors.yellow(err.plugin))
}
var readConfigFile=function(path){
    return fs.readFileSync(path,"utf-8").split('\n');
}
//压缩js
gulp.task('uglifyjs', function () {
    var liles=readConfigFile(config.js_path_config);
    var combined = combiner.obj([ 
        gulp.src(liles),
        uglify(),
        gulp.dest(config.output_path_config)
    ])
    combined.on('error', handleError)
})

//压缩css
gulp.task('minifycss', function () {
    var liles=readConfigFile(config.css_path_config);
    var combined = combiner.obj([ 
        gulp.src(liles),
        minifycss(),
        gulp.dest(config.output_path_config)
    ])
    combined.on('error', handleError)
})


//1.copy 文件夹到当前目录的dist_temp
gulp.task('copy',function () {
    return gulp.src(config.input_path_config+"/**")
        .pipe(gulp.dest(config.output_path_config));
});

/**
*文件打包
*/
gulp.task('build',function () {
  //runSequence("copy-temp","filter","clean-temp");//顺序执行代码
  var mod = argv.m || 'all';//模块明，默认为全部
  var inputPath=config.input_path_config;
  if(mod != 'all'){ //true
      //打包部分模块
      inputPath=argv.m;
  }
  const jsFilter = filter(['**/*.js', '!**/*.min.js'], {restore: true});
  const cssFilter = filter(['**/*.css', '!**/*.min.css'], {restore: true});
  var combined = combiner.obj([
            gulp.src("**",{cwd: inputPath }),
            cssFilter,
            minifycss(),
            cssFilter.restore,
            jsFilter,
            uglify(),
            jsFilter.restore,
            gulp.dest(config.output_path_config)
        ])
        combined.on('error', handleError)
 
   
});
gulp.task('watch',function () {
   gulp.watch(config.input_path_config+"/**", function (event) {
        var paths = watchPath(event, config.input_path_config, config.output_path_config);
     
        gutil.log(gutil.colors.green(event.type) + ' ' + paths.srcPath)
        gutil.log('Dist ' + paths.distPath);
        const jsFilter = filter(['**/*.js', '!**/*.min.js'], {restore: true});
        const cssFilter = filter(['**/*.css', '!**/*.min.css'], {restore: true});
        var combined = combiner.obj([
            gulp.src(paths.srcPath,{cwd: config.input_path_config }),
            cssFilter,
            minifycss(),
            cssFilter.restore,
            jsFilter,
            uglify(),
            jsFilter.restore,
            gulp.dest(paths.distDir)
        ])
        combined.on('error', handleError)
    })
});

  
gulp.task('clean', function() {
   //var mod = argv.m || 'all';//模块明，默认为全部
    return gulp.src(config.output_path_config)
        .pipe(clean({force: true}));
});

// 说明

gulp.task('help',function () {
  console.log("#########################################");
  console.log(' gulp clean          清空输出');
  console.log(' gulp build          文件打包');
  console.log(' gulp copy           文件拷贝');
  console.log(' gulp build -m     部分模块打包（默认全部打包）');
  console.log(' gulp minifycss      打包配置文件中的css文件');
  console.log(' gulp uglifyjs       打包配置文件中的js文件');
  console.log(' gulp help           gulp参数说明');
  console.log("#########################################");
});

gulp.task('default',function () {
   gulp.start('help');
});