markdown for pages #338
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@ -5,6 +5,9 @@ import { host } from '@/config';
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import MkMention from '@/components/mention.vue';
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import MkSparkle from '@/components/sparkle.vue';
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import MkEmoji from '@/components/global/emoji.vue';
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import MkLink from '@/components/link.vue';
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import MkCode from '@/components/code.vue';
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import MkFormula from '@/components/formula.vue';
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export const Markdown = defineComponent({
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props: {
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@ -27,6 +30,12 @@ export const Markdown = defineComponent({
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switch (node.nodeName) {
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case '#text':
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return node.textContent;
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case 'A':
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return h(MkLink, {
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url: node.getAttribute('href'),
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rel: 'nofollow noopener',
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}, node.textContent);
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break;
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case 'SPAN':
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if (node.classList.contains('mfm-sparkle')) {
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return h(MkSparkle, {}, mapNodes(node.childNodes));
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@ -37,6 +46,17 @@ export const Markdown = defineComponent({
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});
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} else if (node.classList.contains('mfm-emoji')) {
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return h(MkEmoji, { emoji: node.textContent, customEmojis: this.customEmojis });
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} else if (node.classList.contains('mfm-codeblock') || node.classList.contains('mfm-inline-code')) {
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return h(MkCode, {
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code: node.innerText,
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lang: node.getAttribute("data-mfm-language") ?? undefined,
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inline: node.classList.contains('mfm-inline-code'),
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}, node.innerText);
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} else if (node.classList.contains('mfm-katex')) {
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return h(MkFormula, {
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formula: node.innerText,
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block: !node.hasAttribute('data-mfm-inline'),
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});
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}
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// fallthrough, just handle like ordinary nodes
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default:
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@ -69,6 +69,28 @@
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}
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}
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.markdown-container {
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blockquote {
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display: block;
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margin: 8px;
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padding: 6px 0 6px 12px;
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color: var(--fg);
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border-left: solid 3px var(--fg);
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opacity: 0.7;
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}
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blockquote blockquote blockquote {
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opacity: 1;
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}
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blockquote > p:first-child {
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margin-top: 0;
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}
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blockquote > p:last-child {
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margin-bottom: 0;
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}
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}
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.animated-mfm {
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.mfm-jelly {
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display: inline-block;
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@ -4,7 +4,7 @@ import * as foundkey from 'foundkey-js';
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import { MFM_TAGS } from '@/scripts/mfm-tags';
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const sanitizerOptions = {
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allowedTags: ["h1", "h2", "h3", "h4", "h5", "h6", "blockquote", "dd", "dl", "dt", "hr", "li", "ol", "p", "pre", "ul", "a", "b", "br", "code", "em", "i", "kbd", "mark", "q", "rp", "rt", "ruby", "s", "small", "span", "strong", "sub", "sup", "u", "wbr", "caption", "col", "colgroup", "table", "tbody", "td", "tfoot", "th", "thead", "tr", "img"],
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allowedTags: ["h1", "h2", "h3", "h4", "h5", "h6", "blockquote", "dd", "dl", "dt", "hr", "li", "ol", "p", "pre", "ul", "a", "b", "br", "code", "em", "i", "kbd", "mark", "q", "rp", "rt", "ruby", "s", "small", "span", "strong", "sub", "sup", "u", "wbr", "caption", "col", "colgroup", "table", "tbody", "td", "tfoot", "th", "thead", "tr", "img", "del"],
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allowedAttributes: {
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a: [ 'href', 'name', 'target' ],
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img: [ 'src', 'srcset', 'alt', 'title', 'width', 'height', 'loading' ],
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@ -39,6 +39,50 @@ marked.setOptions({
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sanitizer: (html) => sanitizeHtml(html, inputSanitizerOptions),
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});
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marked.use({
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tokenizer: {
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blockquote(src) {
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// custom behaviour: don't continue blockquotes onto lines that do not start with a `>`
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// but allow a single empty line to continue the quote
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const match = src.match(/^(?: {0,3}>.*(?:\r\n|\n|$){1,2})+/);
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if (!match) return;
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const lines = match[0].replaceAll('\r\n', '\n')
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.split('\n')
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.map(line => {
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if (line === '') { return line; }
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const initial = line.match(/^ {0,3}>[ \t]?/);
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return line.replace(initial[0], '');
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})
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.join('\n');
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const tokens = [];
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this.lexer.blockTokens(lines, tokens);
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return {
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type: 'blockquote',
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raw: match[0],
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text: lines,
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tokens,
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};
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},
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},
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renderer: {
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code(code, infostring, _escaped) {
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// TODO what does escaped mean here?
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const elem = document.createElement("span");
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elem.classList.add('mfm-codeblock');
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elem.setAttribute("data-mfm-language", infostring);
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elem.innerText = code;
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return elem.outerHTML;
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},
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codespan(code) {
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const elem = document.createElement("span");
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elem.classList.add('mfm-inline-code');
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elem.innerText = code;
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return elem.outerHTML;
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},
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},
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extensions: [
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{
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name: 'center-tag',
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@ -59,7 +103,7 @@ marked.use({
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{
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name: 'mention',
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level: 'inline',
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start(src) { return src.match(/(^|\s)@/)?.index; },
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start(src) { return src.match(/(?<=^|\s)@/)?.index; },
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tokenizer(src) {
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const match = src.match(/^@([-_a-z0-9]+)(?:@(\p{L}+(?:[-.]*\p{L}+)*))?/iu);
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if (!match) return;
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@ -96,6 +140,107 @@ marked.use({
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return `<span class="mfm-emoji">${token.raw}</span>`;
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},
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},
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{
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name: 'katex-block',
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level: 'block',
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start(src) { return src.match(/^\\\[/)?.index; },
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tokenizer(src) {
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const match = src.match(/^\\\[[\r\n]*(.+?)[\r\n]*\\\]/s);
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if (!match) return;
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return {
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type: 'katex-block',
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raw: match[0],
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katex: match[1],
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};
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},
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renderer(token) {
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const elem = document.createElement('span');
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elem.classList.add('mfm-katex');
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elem.innerText = token.katex;
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return elem.outerHTML;
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},
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},
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{
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name: 'katex-inline',
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level: 'inline',
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start(src) { return src.match(/^\\\(/)?.index; },
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tokenizer(src) {
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const match = src.match(/^\\\((.+?)\\\)/);
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if (!match) return;
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return {
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type: 'katex-inline',
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raw: match[0],
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katex: match[1],
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};
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},
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renderer(token) {
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const elem = document.createElement('span');
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elem.classList.add('mfm-katex');
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elem.setAttribute('data-mfm-inline', '1');
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elem.innerText = token.katex;
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return elem.outerHTML;
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},
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},
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{
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name: 'hashtag',
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level: 'inline',
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start(src) { return src.match(/(?<=^|\p{P}|\s)#/)?.index; },
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tokenizer(src) {
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if (!src.startsWith("#")) return;
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function recognizeHashtag(src) {
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// SECURITY: these regexes must not allow any "HTML dangerous" characters.
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const ordinaries = src.match(/^[-\p{L}\p{N}\p{M}\p{Sk}\p{Pc}]*/u);
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const open = src.slice(ordinaries[0].length).match(/^[\[({「]*/);
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if (ordinaries[0].length === 0 && open[0].length === 0) {
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// end of text or hashtag
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return '';
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}
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const close = open[0].split("").map(char => {
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return {
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'[': '\\]',
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'(': '\\)',
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'{': '\\}',
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'「': '」',
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}[char];
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}).join("");
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const sub = src.slice(ordinaries[0].length).match(new RegExp(
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open[0].replaceAll(/([\[({])/g, '\\$1') // escape open brackets/parens
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+ '(.*)'
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+ close,
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'u'));
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if (!sub || sub[1] !== recognizeHashtag(sub[1])) return ordinaries[0];
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const recognized = ordinaries[0] + sub[0];
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const remainder = recognizeHashtag(src.slice(recognized.length));
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if (sub[1] === '' && remainder === '') {
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// don't recognize parens with nothing in them at the end
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return ordinaries[0];
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} else {
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return recognized + remainder;
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}
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}
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let hashtag = recognizeHashtag(src.slice(1));
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// all numeric strings cannot be hashtags
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if (hashtag.match(/^\p{N}+$/u)) return;
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return {
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type: 'hashtag',
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raw: '#' + hashtag,
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tag: hashtag.normalize('NFKC'),
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};
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},
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renderer(token) {
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// SECURITY: token.raw cannot contain "HTML dangerous" characters
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return `<a href="/explore/tags/${encodeURIComponent(token.tag)}" class="mfm-hashtag">${token.raw}</a>`;
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},
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},
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{
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name: 'mfm-function',
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level: 'inline',
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Reference in New Issue