| "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 getUrlFromUrlFunc(node) { |
| return node.nodes.length !== 0 && node.nodes[0].type === 'string' ? node.nodes[0].value : _postcssValueParser.default.stringify(node.nodes); |
| } |
| |
| function walkUrls(parsed, callback) { |
| parsed.walk(node => { |
| if (node.type !== 'function') { |
| return; |
| } |
| |
| if (isUrlFunc.test(node.value)) { |
| callback(getNodeFromUrlFunc(node), getUrlFromUrlFunc(node), false); // Do not traverse inside `url` |
| // eslint-disable-next-line consistent-return |
| |
| return false; |
| } |
| |
| if (isImageSetFunc.test(node.value)) { |
| node.nodes.forEach(nNode => { |
| if (nNode.type === 'function' && isUrlFunc.test(nNode.value)) { |
| callback(getNodeFromUrlFunc(nNode), getUrlFromUrlFunc(nNode), false); |
| } |
| |
| if (nNode.type === 'string') { |
| callback(nNode, nNode.value, true); |
| } |
| }); // Do not traverse inside `image-set` |
| // eslint-disable-next-line consistent-return |
| |
| return false; |
| } |
| }); |
| } |
| |
| function getUrlsFromValue(value, result, filter, decl = null) { |
| if (!needParseDecl.test(value)) { |
| return; |
| } |
| |
| const parsed = (0, _postcssValueParser.default)(value); |
| const urls = []; |
| walkUrls(parsed, (node, url, needQuotes) => { |
| if (url.trim().replace(/\\[\r\n]/g, '').length === 0) { |
| result.warn(`Unable to find uri in '${decl ? decl.toString() : value}'`, decl ? { |
| node: decl |
| } : {}); |
| return; |
| } |
| |
| if (filter && !filter(url)) { |
| return; |
| } |
| |
| urls.push({ |
| url, |
| needQuotes |
| }); |
| }); // eslint-disable-next-line consistent-return |
| |
| return { |
| parsed, |
| urls |
| }; |
| } |
| |
| function walkDeclsWithUrl(css, result, filter) { |
| const items = []; |
| css.walkDecls(decl => { |
| const item = getUrlsFromValue(decl.value, result, filter, decl); |
| |
| if (!item) { |
| return; |
| } |
| |
| if (item.urls.length === 0) { |
| return; |
| } |
| |
| items.push({ |
| decl, |
| parsed: item.parsed, |
| urls: item.urls |
| }); |
| }); |
| return items; |
| } |
| |
| var _default = _postcss.default.plugin(pluginName, (options = {}) => function process(css, result) { |
| const traversed = walkDeclsWithUrl(css, result, options.filter); |
| const paths = (0, _utils.uniqWith)((0, _utils.flatten)(traversed.map(item => item.urls)), (value, other) => value.url === other.url && value.needQuotes === other.needQuotes); |
| |
| if (paths.length === 0) { |
| return; |
| } |
| |
| const placeholders = []; |
| let hasUrlHelper = false; |
| paths.forEach((path, index) => { |
| const { |
| loaderContext |
| } = options; |
| const placeholder = `___CSS_LOADER_URL___${index}___`; |
| const { |
| url, |
| needQuotes |
| } = path; |
| placeholders.push({ |
| placeholder, |
| path |
| }); |
| |
| if (!hasUrlHelper) { |
| result.messages.push({ |
| pluginName, |
| type: 'import', |
| import: (0, _utils.getUrlHelperCode)(loaderContext) |
| }); // eslint-disable-next-line no-param-reassign |
| |
| hasUrlHelper = true; |
| } |
| |
| result.messages.push({ |
| pluginName, |
| type: 'import', |
| import: (0, _utils.getUrlItemCode)({ |
| url, |
| placeholder, |
| needQuotes |
| }, loaderContext), |
| importType: 'url', |
| placeholder |
| }); |
| }); |
| traversed.forEach(item => { |
| walkUrls(item.parsed, (node, url, needQuotes) => { |
| const value = placeholders.find(placeholder => placeholder.path.url === url && placeholder.path.needQuotes === needQuotes); |
| |
| if (!value) { |
| return; |
| } |
| |
| const { |
| placeholder |
| } = value; // eslint-disable-next-line no-param-reassign |
| |
| node.type = 'word'; // eslint-disable-next-line no-param-reassign |
| |
| node.value = placeholder; |
| }); // eslint-disable-next-line no-param-reassign |
| |
| item.decl.value = item.parsed.toString(); |
| }); |
| }); |
| |
| exports.default = _default; |