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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _postcssValueParser = _interopRequireDefault(require("postcss-value-parser"));
var _svgo = require("svgo");
var _url = require("./lib/url");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const PLUGIN = 'postcss-svgo';
const dataURI = /data:image\/svg\+xml(;((charset=)?utf-8|base64))?,/i;
const dataURIBase64 = /data:image\/svg\+xml;base64,/i;
/**
* @param {string} input the SVG string
* @param {boolean} encode whether to encode the result
* @return {object} the minification result
*/
function minifySVG(input, opts) {
let svg = input;
let decodedUri, isUriEncoded;
try {
decodedUri = (0, _url.decode)(input);
isUriEncoded = decodedUri !== input;
} catch (e) {
// Swallow exception if we cannot decode the value
isUriEncoded = false;
}
if (isUriEncoded) {
svg = decodedUri;
}
if (opts.encode !== undefined) {
isUriEncoded = opts.encode;
}
const result = (0, _svgo.optimize)(svg, opts);
if (result.error) {
throw new Error(result.error);
}
return {
result: result.data,
isUriEncoded
};
}
function minify(decl, opts, postcssResult) {
const parsed = (0, _postcssValueParser.default)(decl.value);
decl.value = parsed.walk(node => {
if (node.type !== 'function' || node.value.toLowerCase() !== 'url' || !node.nodes.length) {
return;
}
let {
value,
quote
} = node.nodes[0];
let optimizedValue;
try {
if (dataURIBase64.test(value)) {
const url = new URL(value);
const base64String = `${url.protocol}${url.pathname}`.replace(dataURI, '');
const svg = Buffer.from(base64String, 'base64').toString('utf8');
const {
result
} = minifySVG(svg, opts);
const data = Buffer.from(result).toString('base64');
optimizedValue = 'data:image/svg+xml;base64,' + data + url.hash;
} else if (dataURI.test(value)) {
const svg = value.replace(dataURI, '');
const {
result,
isUriEncoded
} = minifySVG(svg, opts);
let data = isUriEncoded ? (0, _url.encode)(result) : result; // Should always encode # otherwise we yield a broken SVG
// in Firefox (works in Chrome however). See this issue:
// https://github.com/cssnano/cssnano/issues/245
data = data.replace(/#/g, '%23');
optimizedValue = 'data:image/svg+xml;charset=utf-8,' + data;
quote = isUriEncoded ? '"' : "'";
} else {
return;
}
} catch (error) {
decl.warn(postcssResult, `${error}`);
return;
}
node.nodes[0] = Object.assign({}, node.nodes[0], {
value: optimizedValue,
quote: quote,
type: 'string',
before: '',
after: ''
});
return false;
});
decl.value = decl.value.toString();
}
function pluginCreator(opts = {}) {
return {
postcssPlugin: PLUGIN,
OnceExit(css, {
result
}) {
css.walkDecls(decl => {
if (!dataURI.test(decl.value)) {
return;
}
minify(decl, opts, result);
});
}
};
}
pluginCreator.postcss = true;
var _default = pluginCreator;
exports.default = _default;
module.exports = exports.default;