gulp-sprite-png8

var gulp = require('gulp');
var spritesmith = require('gulp.spritesmith');
var imageminPngquant = require('imagemin-pngquant');
var buffer = require('vinyl-buffer');
var rename = require("gulp-rename");

module.exports = function (config) {
    var sprite = config.sprite;

    return function (cb) {
        cb = cb || function() {};

        gulp.src(sprite.src)
            .pipe(spritesmith({
                imgName: sprite.imgName,
                cssName: sprite.cssName
            }))
            .pipe(gulp.dest(sprite.dest))
            .pipe(buffer())
            .pipe(rename(function (path) {
                //path.dirname += '/i';
                path.basename += '_8';
                path.extname = '.png'
            }))
            .pipe(imageminPngquant({quality: '65-80', speed: 4})())
            .pipe(gulp.dest(sprite.dest))
            .on('end', cb);
    }
};