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- "use strict";
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = void 0;
- var _postcss = _interopRequireDefault(require("postcss"));
- var _postcssValueParser = _interopRequireDefault(require("postcss-value-parser"));
- var _utils = require("../utils");
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
- const pluginName = 'postcss-url-parser';
- const isUrlFunc = /url/i;
- const isImageSetFunc = /^(?:-webkit-)?image-set$/i;
- const needParseDecl = /(?:url|(?:-webkit-)?image-set)\(/i;
- function getNodeFromUrlFunc(node) {
- return node.nodes && node.nodes[0];
- }
- function walkUrls(parsed, callback) {
- parsed.walk(node => {
- if (node.type !== 'function') {
- return;
- }
- if (isUrlFunc.test(node.value)) {
- const {
- nodes
- } = node;
- const isStringValue = nodes.length !== 0 && nodes[0].type === 'string';
- const url = isStringValue ? nodes[0].value : _postcssValueParser.default.stringify(nodes);
- callback(getNodeFromUrlFunc(node), url, false, isStringValue); // Do not traverse inside `url`
- // eslint-disable-next-line consistent-return
- return false;
- }
- if (isImageSetFunc.test(node.value)) {
- for (const nNode of node.nodes) {
- const {
- type,
- value
- } = nNode;
- if (type === 'function' && isUrlFunc.test(value)) {
- const {
- nodes
- } = nNode;
- const isStringValue = nodes.length !== 0 && nodes[0].type === 'string';
- const url = isStringValue ? nodes[0].value : _postcssValueParser.default.stringify(nodes);
- callback(getNodeFromUrlFunc(nNode), url, false, isStringValue);
- }
- if (type === 'string') {
- callback(nNode, value, true, true);
- }
- } // Do not traverse inside `image-set`
- // eslint-disable-next-line consistent-return
- return false;
- }
- });
- }
- var _default = _postcss.default.plugin(pluginName, options => (css, result) => {
- const importsMap = new Map();
- const replacementsMap = new Map();
- let hasHelper = false;
- css.walkDecls(decl => {
- if (!needParseDecl.test(decl.value)) {
- return;
- }
- const parsed = (0, _postcssValueParser.default)(decl.value);
- walkUrls(parsed, (node, url, needQuotes, isStringValue) => {
- // https://www.w3.org/TR/css-syntax-3/#typedef-url-token
- if (url.replace(/^[\s]+|[\s]+$/g, '').length === 0) {
- result.warn(`Unable to find uri in '${decl ? decl.toString() : decl.value}'`, {
- node: decl
- });
- return;
- }
- if (options.filter && !options.filter(url)) {
- return;
- }
- const splittedUrl = url.split(/(\?)?#/);
- const [urlWithoutHash, singleQuery, hashValue] = splittedUrl;
- const hash = singleQuery || hashValue ? `${singleQuery ? '?' : ''}${hashValue ? `#${hashValue}` : ''}` : '';
- const normalizedUrl = (0, _utils.normalizeUrl)(urlWithoutHash, isStringValue);
- const importKey = normalizedUrl;
- let importName = importsMap.get(importKey);
- if (!importName) {
- importName = `___CSS_LOADER_URL_IMPORT_${importsMap.size}___`;
- importsMap.set(importKey, importName);
- if (!hasHelper) {
- const urlToHelper = require.resolve('../runtime/getUrl.js');
- result.messages.push({
- pluginName,
- type: 'import',
- value: {
- importName: '___CSS_LOADER_GET_URL_IMPORT___',
- url: options.urlHandler ? options.urlHandler(urlToHelper) : urlToHelper
- }
- });
- hasHelper = true;
- }
- result.messages.push({
- pluginName,
- type: 'import',
- value: {
- importName,
- url: options.urlHandler ? options.urlHandler(normalizedUrl) : normalizedUrl
- }
- });
- }
- const replacementKey = JSON.stringify({
- importKey,
- hash,
- needQuotes
- });
- let replacementName = replacementsMap.get(replacementKey);
- if (!replacementName) {
- replacementName = `___CSS_LOADER_URL_REPLACEMENT_${replacementsMap.size}___`;
- replacementsMap.set(replacementKey, replacementName);
- result.messages.push({
- pluginName,
- type: 'url-replacement',
- value: {
- replacementName,
- importName,
- hash,
- needQuotes
- }
- });
- } // eslint-disable-next-line no-param-reassign
- node.type = 'word'; // eslint-disable-next-line no-param-reassign
- node.value = replacementName;
- }); // eslint-disable-next-line no-param-reassign
- decl.value = parsed.toString();
- });
- });
- exports.default = _default;
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