gulp

参考文档：https://gulpjs.com/
　　　　　https://markpop.github.io/2014/09/17/Gulp%E5%85%A5%E9%97%A8%E6%95%99%E7%A8%8B/
　　　　　http://www.gulpjs.com.cn/docs/api/
　　　　　http://www.cnblogs.com/hutuzhu/p/5276000.html



  1 var gulp = require('gulp');
var clean = require('gulp-clean');
var sass = require('gulp-sass');
var runSequence = require('run-sequence');
var autoprefixer = require('gulp-autoprefixer');
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var pump = require('pump')


var src = {
    sass: [
        'src/sass/**/*.sass'        //编译用
    ],
    css: [
        'src/css/**/*.css'          //清除用
    ]
};

var build = {
    css: 'src/css',
};


function log(msg) {
    util.log(util.colors.blue(msg));
}

// 处理错误
function handleError(err) {
    log(err.toString());
    this.emit('end');
}

//---------------------------------------
gulp.task('清除', function () {
    return gulp.src(src.css, {
        read: false
    })
        .pipe(clean({
            force: true
        }));
});


gulp.task('监听', function () {
    runSequence('清除', ['编译']);
    // gulp.watch(src.css, ['监听']);
});


//---------------------------------------


gulp.task('编译', function () {
    return gulp.src(src.sass)
        .pipe(sass().on('error', sass.logError))
        .pipe(autoprefixer({
            browsers: ['iOS >= 7', 'Android >= 4.1']
        }))
        .pipe(gulp.dest(build.css))
});

gulp.task('watch', function () {
    gulp.watch(src.sass, ['监听']);

});

//++++++++++++++++++++++++++++

gulp.task('scripts', function () {
    return gulp.src(['./src/nJs/one.js', './src/nJs/two.js'])
        .pipe(concat({path: 'new.js', stat: {mode: 0666}}))
        .pipe(gulp.dest('./src/outJs'));
});


gulp.task('watch:script', function () {
    gulp.watch('./src/nJs/**/*.js', ['scripts']);

});


//----------------------压缩代码---------------------------

gulp.task('compress', function (cb) {
    pump([
            gulp.src('./src/nJs/**/*.js'),
            uglify(),
            gulp.dest('./dist')
        ],
        cb
    );
});

//------------------------------------------------

gulp.task('build-1', function () {
    runSequence('清除', ['编译']);
    // gulp.start('build:app', 'build:vendor');
});

gulp.task('default', function () {
    runSequence('build-1','scripts',"compress", ['watch','watch:script']);
});