aaac7fed
 liuqimichale
add
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'use strict';
exports.__esModule = true;
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
var _postcss = require('postcss');
var _postcss2 = _interopRequireDefault(_postcss);
var _postcssValueParser = require('postcss-value-parser');
var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
var _svgo = require('svgo');
var _svgo2 = _interopRequireDefault(_svgo);
var _isSvg = require('is-svg');
var _isSvg2 = _interopRequireDefault(_isSvg);
var _url = require('./lib/url');
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var PLUGIN = 'postcss-svgo';
var dataURI = /data:image\/svg\+xml(;(charset=)?utf-8)?,/;
function minifyPromise(svgo, decl, opts) {
var promises = [];
decl.value = (0, _postcssValueParser2.default)(decl.value).walk(function (node) {
if (node.type !== 'function' || node.value !== 'url' || !node.nodes.length) {
return;
}
var value = node.nodes[0].value;
var decodedUri = void 0,
isUriEncoded = void 0;
try {
decodedUri = (0, _url.decode)(value);
isUriEncoded = decodedUri !== value;
} catch (e) {
// Swallow exception if we cannot decode the value
isUriEncoded = false;
}
if (isUriEncoded) {
value = decodedUri;
}
if (opts.encode !== undefined) {
isUriEncoded = opts.encode;
}
var svg = value.replace(dataURI, '');
if (!(0, _isSvg2.default)(svg)) {
return;
}
promises.push(new Promise(function (resolve, reject) {
return svgo.optimize(svg, function (result) {
if (result.error) {
return reject(PLUGIN + ': ' + result.error);
}
var data = isUriEncoded ? (0, _url.encode)(result.data) : result.data;
// Should always encode # otherwise we yield a broken SVG
// in Firefox (works in Chrome however). See this issue:
// https://github.com/ben-eb/cssnano/issues/245
data = data.replace(/#/g, '%23');
node.nodes[0] = _extends({}, node.nodes[0], {
value: 'data:image/svg+xml;charset=utf-8,' + data,
quote: isUriEncoded ? '"' : '\'',
type: 'string',
before: '',
after: ''
});
return resolve();
});
}));
return false;
});
return Promise.all(promises).then(function () {
return decl.value = decl.value.toString();
});
}
exports.default = _postcss2.default.plugin(PLUGIN, function () {
var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
var svgo = new _svgo2.default(opts);
return function (css) {
return new Promise(function (resolve, reject) {
var promises = [];
css.walkDecls(function (decl) {
if (dataURI.test(decl.value)) {
promises.push(minifyPromise(svgo, decl, opts));
}
});
return Promise.all(promises).then(resolve, reject);
});
};
});
module.exports = exports['default'];
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