grunt-cache-busting
Version:
Simplistic cache busting
49 lines (42 loc) • 1.63 kB
JavaScript
module.exports = function (grunt) {
var fs = require('fs'),
path = require('path'),
crypto = require('crypto'),
glob = require('glob'),
gruntTextReplace = require('grunt-text-replace/lib/grunt-text-replace');
grunt.registerMultiTask('cache-busting', 'Cache bust file and update references', function() {
var fileContents = grunt.file.read(this.data.file),
hash = crypto.createHash('md5').update(fileContents).digest("hex"),
outputDir = path.dirname(this.data.file),
fileExtension = path.extname(this.data.file),
replacementExtension = path.extname(this.data.replacement),
replacementWithoutExtension = this.data.replacement.slice(0, this.data.replacement.length - replacementExtension.length),
outputFile = outputDir + path.sep + replacementWithoutExtension + "-" + hash + fileExtension;
if (this.data.get_param){
gruntTextReplace.replace({
src: this.data.replace,
overwrite: true,
replacements: [{
from: new RegExp(this.data.replacement + "(\\?v=)?([a-z0-9]+)*"),
to: this.data.replacement + "?v=" + hash
}]
});
} else {
if (this.data.cleanup) {
var files = glob.sync(outputDir + path.sep + replacementWithoutExtension + "-*" + fileExtension);
files.forEach(function(file){
fs.unlink(file);
})
}
fs.rename(this.data.file, outputFile);
gruntTextReplace.replace({
src: this.data.replace,
overwrite: true,
replacements: [{
from: new RegExp(replacementWithoutExtension + "((\-?)(.+)*)" + replacementExtension),
to: replacementWithoutExtension + "-" + hash + replacementExtension
}]
});
}
});
};