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52 lines
2.4 KiB
JavaScript
52 lines
2.4 KiB
JavaScript
"use strict";
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// Since VuePress needs to extract the header from the markdown source
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// file and display it in the sidebar or title (#238), this file simply
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// removes some unnecessary elements to make header displays well at
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// sidebar or title.
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//
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// But header's parsing in the markdown content is done by the markdown
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// loader based on markdown-it. markdown-it parser will will always keep
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// HTML in headers, so in VuePress, after being parsed by the markdiwn
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// loader, the raw HTML in headers will finally be parsed by Vue-loader.
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// so that we can write HTML/Vue in the header. One exception is the HTML
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// wrapped by <code>(markdown token: '`') tag.
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.deeplyParseHeader = exports.parseHeader = exports.removeNonCodeWrappedHTML = void 0;
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const parseEmojis = (str) => {
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const emojiData = require('markdown-it-emoji/lib/data/full.json');
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return String(str).replace(/:(.+?):/g, (placeholder, key) => emojiData[key] || placeholder);
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};
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const unescapeHtml = (html) => String(html)
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.replace(/"/g, '"')
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.replace(/'/g, "'")
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.replace(/:/g, ':')
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.replace(/</g, '<')
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.replace(/>/g, '>');
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const removeMarkdownTokens = (str) => String(str)
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.replace(/\[(.*)\]\(.*\)/, '$1') // []()
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.replace(/(`|\*{1,3}|_)(.*?[^\\])\1/g, '$2') // `{t}` | *{t}* | **{t}** | ***{t}*** | _{t}_
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.replace(/(\\)(\*|_|`|\!)/g, '$2'); // remove escape char '\'
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const trim = (str) => str.trim();
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// This method remove the raw HTML but reserve the HTML wrapped by `<code>`.
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// e.g.
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// Input: "<a> b", Output: "b"
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// Input: "`<a>` b", Output: "`<a>` b"
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exports.removeNonCodeWrappedHTML = (str) => {
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return String(str).replace(/(^|[^><`])<.*>([^><`]|$)/g, '$1$2');
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};
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const compose = (...processors) => {
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if (processors.length === 0)
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return (input) => input;
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if (processors.length === 1)
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return processors[0];
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return processors.reduce((prev, next) => {
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return (str) => next(prev(str));
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});
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};
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// Unescape html, parse emojis and remove some md tokens.
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exports.parseHeader = compose(unescapeHtml, parseEmojis, removeMarkdownTokens, trim);
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// Also clean the html that isn't wrapped by code.
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// Because we want to support using VUE components in headers.
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// e.g. https://vuepress.vuejs.org/guide/using-vue.html#badge
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exports.deeplyParseHeader = compose(exports.removeNonCodeWrappedHTML, exports.parseHeader);
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//# sourceMappingURL=parseHeader.js.map
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