md5 the static file and change the names in the quoted html
npm install gulp-md5-plus> md5 plugin for gulp ,md5 the static files(eg javascript style image files) ;then replace the filenames in css or the html if needed by passing the file or dir in the second parameter
First, install gulp-md5-plus as a development dependency:
``shell`
npm install --save-dev gulp-md5-plus
Then, add it to your gulpfile.js:
`javascript
var md5 = require("gulp-md5-plus");
gulp.src("./src/*.css")
.pipe(md5(10,'./output/index.html'))
.pipe(gulp.dest("./dist"));
`
md5 all css files in the src folder and change these css names in the quoted html--index.html
`javascript
gulp.task('img' ,function() {
var imgSrc = './static/img/**',
quoteSrc = './output/static/css//.css', // [./output/static/css//.css',./output/static/js/*/.js']
imgDst = './output/static/img';
return gulp.src(imgSrc)
.pipe(imagemin())
.pipe(md5(10 ,quoteSrc))
.pipe(gulp.dest(imgDst));
});
`
first, optimize all images in the img folder including all sub folders; then md5 all these images and change these images' names in the quoted css files ;
####note
the directory of the md5ed files in the imgDst folder is the same as that of original files in the imgSrc folder; and css files can refer the image file with the same name in different folder rightly;
#### size
Type: String
Default: null
> you can pass the size to limit the size of the hash that is appended.
#### file
Type: String
Default: null
> the file need to replace the file name of the md5ed files. dir is also supported
#### option
Type: Object
Default: null
##### option.dirLevel
Type: Number
Default: null
> used to match the file with it's directory path. for example: there is a file Dev/work/gulp-md5-plus/demo/source/img/sub_img/same.svg;when setting dirLevel to 1, the plugin will use sub_img/same.svg to find this file in the quoted files;this option's main purpose is to replace the files with the same name in different paths. you can see demo for detail.
Example:
`javascript`
gulp.task('img' , ['css'],function() {
gulp.src('./source/img/*/')
.pipe(md5(10 ,'./output/css/*.css',{
dirLevel : 1,
mappingFile: 'manifest.json',
connector: '.'
}))
.pipe(gulp.dest('./output/img/'));
});
The sample above will append the md5 hash(length : 10) to each of the file in the static/js folder then repalce the link file name in the output/html/ using md5ed file name; at last store all of that into the output folder.
##### option.connector
Type: String
Default: _
> used to set the output file‘s connector; if use . the outfile will look like imgfile.5546983ac2.png ,while default is imgfile_5546983ac2.png
##### option.mappingFile
Type: String
Default: null
> set the file to write the mapping result ,for example manifest.json
after set this option ;you should remove this file before gulp`; you can follow the demo;
I have add a demo to demonstate how to use this plugin; If you have any other questions ,pls add issues.
http://en.wikipedia.org/wiki/MIT_License[MIT License]