WEB项目构建优化之自动清除CSS中的图片缓存

var customCssUrls = require(‘gulp-custom-css-urls‘);
var gulp = require(‘gulp‘);
var path = require(‘path‘);
gulp.task(‘demo‘,function(){
return gulp.src(‘assets/**/*.css‘)
.pipe(customCssUrls({
/** 
* static filepath relative absolute filepath‘s physical position. 
* eg: 
* image path inline css is ‘/images/demo.png‘, 
* image absoulte filepath is ‘/Users/Navy/Desktop/code/demo/assets/images/demo.png‘, 
* the process(process.cwd()) path is ‘/Users/Navy/Desktop/code/demo‘, 
* so the image path relative website root path is ‘assets/‘
*/
staticfile_relative_website_rootpath: ‘assets/‘, 
outputImage: true, // output images file , default to false
outputImage_path: ‘./.gulp_dist_output_images‘, // default to ‘./.gulp_dist_output_images‘
modify: function (imageRelativePath, cssFilePath, imageRelativeWebsiteRootPath, imgInfo) {
// modify image url before prepend or append
// the imgInfo param is object, {hash: 3503865059, width: 1782, height: 530, orgin_filename: ‘custom.png‘}
return path.join(imageRelativeWebsiteRootPath, path.basename(imageRelativePath)); //let the relative path become an absolute path
},
prepend: ‘‘, // prepend string before image url
append: ‘‘, // append string after image url
processPath: process.cwd() // custom process path , default to process.cwd()
}))
.pipe(gulp.dest(‘tmp/‘));
})
gulp.task(‘default‘,[‘demo‘]);