Imagemin.prototype.optimize = function (cb) {
if (!cb || !isFunction(cb)) {
cb = function () {};
}
if (!fs.existsSync(path.dirname(this.dest))) {
mkdir.sync(path.dirname(this.dest));
}
if (this.opts.cache && cache.check(this.src, { name: 'imagemin' })) {
cache.get(this.src, this.dest, { name: 'imagemin' });
return cb(null, this._process());
}
if (!isFunction(this.optimizer)) {
return cb();
}
var self = this;
var optimizer = this.optimizer(this.src, this.dest, cb);
optimizer.on('error', function (err) {
return cb(new Error(err));
});
optimizer.stderr.on('data', function (data) {
return cb(new Error(data.toString()));
});
optimizer.once('close', function (code) {
if (code === 0) {
return cb(null, self._process());
}
});
};
Imagemin.prototype._process = function () {
var size = fs.statSync(this.src).size;
var saved = size - fs.statSync(this.dest).size;
if (this.opts.cache && !cache.check(this.src, { name: 'imagemin' })) {
cache.store(this.dest, this.src, { name: 'imagemin' });
}
var data = {
origSize: filesize(size),
origSizeRaw: size,
diffSize: filesize(saved),
diffSizeRaw: saved
};
return data;
};