svgo.js
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'use strict';
/**
* SVGO is a Nodejs-based tool for optimizing SVG vector graphics files.
*
* @see https://github.com/svg/svgo
*
* @author Kir Belevich <kir@soulshine.in> (https://github.com/deepsweet)
* @copyright © 2012 Kir Belevich
* @license MIT https://raw.githubusercontent.com/svg/svgo/master/LICENSE
*/
var CONFIG = require('./svgo/config.js'),
SVG2JS = require('./svgo/svg2js.js'),
PLUGINS = require('./svgo/plugins.js'),
JSAPI = require('./svgo/jsAPI.js'),
JS2SVG = require('./svgo/js2svg.js');
var SVGO = module.exports = function(config) {
this.config = CONFIG(config);
};
SVGO.prototype.optimize = function(svgstr, callback) {
if (this.config.error) return callback(this.config);
var _this = this,
config = this.config,
maxPassCount = config.multipass ? 10 : 1,
counter = 0,
prevResultSize = Number.POSITIVE_INFINITY,
optimizeOnceCallback = function(svgjs) {
if (svgjs.error) {
callback(svgjs);
return;
}
if (++counter < maxPassCount && svgjs.data.length < prevResultSize) {
prevResultSize = svgjs.data.length;
_this._optimizeOnce(svgjs.data, optimizeOnceCallback);
} else {
callback(svgjs);
}
};
_this._optimizeOnce(svgstr, optimizeOnceCallback);
};
SVGO.prototype._optimizeOnce = function(svgstr, callback) {
var config = this.config;
SVG2JS(svgstr, function(svgjs) {
if (svgjs.error) {
callback(svgjs);
return;
}
svgjs = PLUGINS(svgjs, config.plugins);
callback(JS2SVG(svgjs, config.js2svg));
});
};
/**
* The factory that creates a content item with the helper methods.
*
* @param {Object} data which passed to jsAPI constructor
* @returns {JSAPI} content item
*/
SVGO.prototype.createContentItem = function(data) {
return new JSAPI(data);
};