367 lines
14 KiB
TypeScript
367 lines
14 KiB
TypeScript
import * as P from 'parsimmon';
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import parseAcct from '../misc/acct/parse';
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import { toUnicode } from 'punycode';
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import { takeWhile } from '../prelude/array';
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const emojiRegex = /((?:\ud83d[\udc68\udc69])(?:\ud83c[\udffb-\udfff])?\u200d(?:\u2695\ufe0f|\u2696\ufe0f|\u2708\ufe0f|\ud83c[\udf3e\udf73\udf93\udfa4\udfa8\udfeb\udfed]|\ud83d[\udcbb\udcbc\udd27\udd2c\ude80\ude92]|\ud83e[\uddb0-\uddb3])|(?:\ud83c[\udfcb\udfcc]|\ud83d[\udd74\udd75]|\u26f9)((?:\ud83c[\udffb-\udfff]|\ufe0f)\u200d[\u2640\u2642]\ufe0f)|(?:\ud83c[\udfc3\udfc4\udfca]|\ud83d[\udc6e\udc71\udc73\udc77\udc81\udc82\udc86\udc87\ude45-\ude47\ude4b\ude4d\ude4e\udea3\udeb4-\udeb6]|\ud83e[\udd26\udd35\udd37-\udd39\udd3d\udd3e\uddb8\uddb9\uddd6-\udddd])(?:\ud83c[\udffb-\udfff])?\u200d[\u2640\u2642]\ufe0f|(?:\ud83d\udc68\u200d\u2764\ufe0f\u200d\ud83d\udc8b\u200d\ud83d\udc68|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\u2764\ufe0f\u200d\ud83d\udc8b\u200d\ud83d[\udc68\udc69]|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\u2764\ufe0f\u200d\ud83d\udc68|\ud83d\udc68\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\u2764\ufe0f\u200d\ud83d[\udc68\udc69]|\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83c\udff3\ufe0f\u200d\ud83c\udf08|\ud83c\udff4\u200d\u2620\ufe0f|\ud83d\udc41\u200d\ud83d\udde8|\ud83d\udc68\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83d\udc6f\u200d\u2640\ufe0f|\ud83d\udc6f\u200d\u2642\ufe0f|\ud83e\udd3c\u200d\u2640\ufe0f|\ud83e\udd3c\u200d\u2642\ufe0f|\ud83e\uddde\u200d\u2640\ufe0f|\ud83e\uddde\u200d\u2642\ufe0f|\ud83e\udddf\u200d\u2640\ufe0f|\ud83e\udddf\u200d\u2642\ufe0f)|[\u0023\u002a\u0030-\u0039]\ufe0f?\u20e3|(?:[\u00a9\u00ae\u2122\u265f]\ufe0f)|(?:\ud83c[\udc04\udd70\udd71\udd7e\udd7f\ude02\ude1a\ude2f\ude37\udf21\udf24-\udf2c\udf36\udf7d\udf96\udf97\udf99-\udf9b\udf9e\udf9f\udfcd\udfce\udfd4-\udfdf\udff3\udff5\udff7]|\ud83d[\udc3f\udc41\udcfd\udd49\udd4a\udd6f\udd70\udd73\udd76-\udd79\udd87\udd8a-\udd8d\udda5\udda8\uddb1\uddb2\uddbc\uddc2-\uddc4\uddd1-\uddd3\udddc-\uddde\udde1\udde3\udde8\uddef\uddf3\uddfa\udecb\udecd-\udecf\udee0-\udee5\udee9\udef0\udef3]|[\u203c\u2049\u2139\u2194-\u2199\u21a9\u21aa\u231a\u231b\u2328\u23cf\u23ed-\u23ef\u23f1\u23f2\u23f8-\u23fa\u24c2\u25aa\u25ab\u25b6\u25c0\u25fb-\u25fe\u2600-\u2604\u260e\u2611\u2614\u2615\u2618\u2620\u2622\u2623\u2626\u262a\u262e\u262f\u2638-\u263a\u2640\u2642\u2648-\u2653\u2660\u2663\u2665\u2666\u2668\u267b\u267f\u2692-\u2697\u2699\u269b\u269c\u26a0\u26a1\u26aa\u26ab\u26b0\u26b1\u26bd\u26be\u26c4\u26c5\u26c8\u26cf\u26d1\u26d3\u26d4\u26e9\u26ea\u26f0-\u26f5\u26f8\u26fa\u26fd\u2702\u2708\u2709\u270f\u2712\u2714\u2716\u271d\u2721\u2733\u2734\u2744\u2747\u2757\u2763\u2764\u27a1\u2934\u2935\u2b05-\u2b07\u2b1b\u2b1c\u2b50\u2b55\u3030\u303d\u3297\u3299])(?:\ufe0f|(?!\ufe0e))|(?:(?:\ud83c[\udfcb\udfcc]|\ud83d[\udd74\udd75\udd90]|[\u261d\u26f7\u26f9\u270c\u270d])(?:\ufe0f|(?!\ufe0e))|(?:\ud83c[\udf85\udfc2-\udfc4\udfc7\udfca]|\ud83d[\udc42\udc43\udc46-\udc50\udc66-\udc69\udc6e\udc70-\udc78\udc7c\udc81-\udc83\udc85-\udc87\udcaa\udd7a\udd95\udd96\ude45-\ude47\ude4b-\ude4f\udea3\udeb4-\udeb6\udec0\udecc]|\ud83e[\udd18-\udd1c\udd1e\udd1f\udd26\udd30-\udd39\udd3d\udd3e\uddb5\uddb6\uddb8\uddb9\uddd1-\udddd]|[\u270a\u270b]))(?:\ud83c[\udffb-\udfff])?|(?:\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc65\udb40\udc6e\udb40\udc67\udb40\udc7f|\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc73\udb40\udc63\udb40\udc74\udb40\udc7f|\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f|\ud83c\udde6\ud83c[\udde8-\uddec\uddee\uddf1\uddf2\uddf4\uddf6-\uddfa\uddfc\uddfd\uddff]|\ud83c\udde7\ud83c[\udde6\udde7\udde9-\uddef\uddf1-\uddf4\uddf6-\uddf9\uddfb\uddfc\uddfe\uddff]|\ud83c\udde8\ud83c[\udde6\udde8\udde9\uddeb-\uddee\uddf0-\uddf5\uddf7\uddfa-\uddff]|\ud83c\udde9\ud83c[\uddea\uddec\uddef\uddf0\uddf2\uddf4\uddff]|\ud83c\uddea\ud83c[\udde6\udde8\uddea\uddec\udded\uddf7-\uddfa]|\ud83c\uddeb\ud83c[\uddee-\uddf0\uddf2\uddf4\uddf7]|\ud83c\uddec\ud83c[\udde6\udde7\udde9-\uddee\uddf1-\uddf3\uddf5-\uddfa\uddfc\uddfe]|\ud83c\udded\ud83c[\uddf0\uddf2\uddf3\uddf7\uddf9\uddfa]|\ud83c\uddee\ud83c[\udde8-\uddea\uddf1-\uddf4\uddf6-\uddf9]|\ud83c\uddef\ud83c[\uddea\uddf2\uddf4\uddf5]|\ud83c\uddf0\ud83c[\uddea\uddec-\uddee\uddf2\uddf3\uddf5\uddf7\uddfc\uddfe\uddff]|\ud83c\uddf1\ud83c[\udde6-\udde8\uddee\uddf0\uddf7-\uddfb\uddfe]|\ud83c\uddf2\ud83c[\udde6\udde8-\udded\uddf0-\uddff]|\ud83c\uddf3\ud83c[\udde6\udde8\uddea-\uddec\uddee\uddf1\uddf4\uddf5\uddf7\uddfa\uddff]|\ud83c\uddf4\ud83c\uddf2|\ud83c\uddf5\ud83c[\udde6\uddea-\udded\uddf0-\uddf3\uddf7-\uddf9\uddfc\uddfe]|\ud83c\uddf6\ud83c\udde6|\ud83c\uddf7\ud83c[\uddea\uddf4\uddf8\uddfa\uddfc]|\ud83c\uddf8\ud83c[\udde6-\uddea\uddec-\uddf4\uddf7-\uddf9\uddfb\uddfd-\uddff]|\ud83c\uddf9\ud83c[\udde6\udde8\udde9\uddeb-\udded\uddef-\uddf4\uddf7\uddf9\uddfb\uddfc\uddff]|\ud83c\uddfa\ud83c[\udde6\uddec\uddf2\uddf3\uddf8\uddfe\uddff]|\ud83c\uddfb\ud83c[\udde6\udde8\uddea\uddec\uddee\uddf3\uddfa]|\ud83c\uddfc\ud83c[\uddeb\uddf8]|\ud83c\uddfd\ud83c\uddf0|\ud83c\uddfe\ud83c[\uddea\uddf9]|\ud83c\uddff\ud83c[\udde6\uddf2\uddfc]|\ud83c[\udccf\udd8e\udd91-\udd9a\udde6-\uddff\ude01\ude32-\ude36\ude38-\ude3a\ude50\ude51\udf00-\udf20\udf2d-\udf35\udf37-\udf7c\udf7e-\udf84\udf86-\udf93\udfa0-\udfc1\udfc5\udfc6\udfc8\udfc9\udfcf-\udfd3\udfe0-\udff0\udff4\udff8-\udfff]|\ud83d[\udc00-\udc3e\udc40\udc44\udc45\udc51-\udc65\udc6a-\udc6d\udc6f\udc79-\udc7b\udc7d-\udc80\udc84\udc88-\udca9\udcab-\udcfc\udcff-\udd3d\udd4b-\udd4e\udd50-\udd67\udda4\uddfb-\ude44\ude48-\ude4a\ude80-\udea2\udea4-\udeb3\udeb7-\udebf\udec1-\udec5\uded0-\uded2\udeeb\udeec\udef4-\udef9]|\ud83e[\udd10-\udd17\udd1d\udd20-\udd25\udd27-\udd2f\udd3a\udd3c\udd40-\udd45\udd47-\udd70\udd73-\udd76\udd7a\udd7c-\udda2\uddb4\uddb7\uddc0-\uddc2\uddd0\uddde-\uddff]|[\u23e9-\u23ec\u23f0\u23f3\u267e\u26ce\u2705\u2728\u274c\u274e\u2753-\u2755\u2795-\u2797\u27b0\u27bf\ue50a])|\ufe0f)/;
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export type Node = {
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name: string,
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children?: Node[],
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props?: any;
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};
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function _makeNode(name: string, children?: Node[], props?: any): Node {
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return children ? {
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name,
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children,
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props
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} : {
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name,
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props
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};
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}
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function makeNode(name: string, props?: any): Node {
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return _makeNode(name, null, props);
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}
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function makeNodeWithChildren(name: string, children: Node[], props?: any): Node {
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return _makeNode(name, children, props);
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}
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function getTrailingPosition(x: string): number {
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const brackets = [
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['(', ')'],
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['「', '」'],
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];
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const pendingBrackets = [] as any;
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const end = x.split('').findIndex(char => {
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const closeMatch = brackets.map(x => x[1]).indexOf(char);
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const openMatch = brackets.map(x => x[0]).indexOf(char);
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if (closeMatch != -1) {
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if (pendingBrackets[closeMatch] > 0) {
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pendingBrackets[closeMatch]--;
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return false;
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} else {
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return true;
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}
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} else if (openMatch != -1) {
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pendingBrackets[openMatch] = (pendingBrackets[openMatch] || 0) + 1;
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return false;
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} else {
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return false;
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}
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});
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return end > 0 ? end : x.length;
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}
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const newline = P((input, i) => {
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if (i == 0 || input[i] == '\n' || input[i - 1] == '\n') {
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return P.makeSuccess(i, null);
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} else {
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return P.makeFailure(i, 'not newline');
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}
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});
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const mfm = P.createLanguage({
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root: r => P.alt(
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r.big,
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r.small,
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r.bold,
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r.strike,
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r.italic,
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r.motion,
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r.url,
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r.link,
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r.mention,
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r.hashtag,
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r.emoji,
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r.blockCode,
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r.inlineCode,
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r.quote,
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r.math,
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r.search,
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r.title,
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r.center,
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r.text
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).atLeast(1),
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text: () => P.any.map(x => makeNode('text', { text: x })),
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//#region Big
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big: r =>
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P.regexp(/^\*\*\*([\s\S]+?)\*\*\*/, 1)
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.map(x => makeNodeWithChildren('big', P.alt(
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r.strike,
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r.italic,
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r.mention,
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r.hashtag,
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r.emoji,
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r.math,
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r.text
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).atLeast(1).tryParse(x))),
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//#endregion
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//#region Small
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small: r =>
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P.regexp(/<small>([\s\S]+?)<\/small>/, 1)
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.map(x => makeNodeWithChildren('small', P.alt(
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r.strike,
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r.italic,
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r.mention,
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r.hashtag,
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r.emoji,
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r.math,
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r.text
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).atLeast(1).tryParse(x))),
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//#endregion
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//#region Block code
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blockCode: r =>
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newline.then(
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P((input, i) => {
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const text = input.substr(i);
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const match = text.match(/^```(.+?)?\n([\s\S]+?)\n```(\n|$)/i);
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if (!match) return P.makeFailure(i, 'not a blockCode');
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return P.makeSuccess(i + match[0].length, makeNode('blockCode', { code: match[2], lang: match[1] ? match[1].trim() : null }));
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})
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),
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//#endregion
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//#region Bold
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bold: r =>
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P.regexp(/\*\*([\s\S]+?)\*\*/, 1)
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.map(x => makeNodeWithChildren('bold', P.alt(
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r.strike,
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r.italic,
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r.mention,
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r.hashtag,
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r.url,
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r.link,
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r.emoji,
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r.text
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).atLeast(1).tryParse(x))),
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//#endregion
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//#region Center
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center: r =>
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P.regexp(/<center>([\s\S]+?)<\/center>/, 1)
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.map(x => makeNodeWithChildren('center', P.alt(
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r.big,
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r.small,
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r.bold,
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r.strike,
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r.italic,
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r.motion,
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r.mention,
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r.hashtag,
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r.emoji,
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r.math,
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r.url,
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r.link,
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r.text
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).atLeast(1).tryParse(x))),
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//#endregion
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//#region Emoji
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emoji: r =>
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P.alt(
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P.regexp(/:([a-z0-9_+-]+):/i, 1)
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.map(x => makeNode('emoji', {
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name: x
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})),
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P.regexp(emojiRegex)
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.map(x => makeNode('emoji', {
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emoji: x
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})),
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),
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//#endregion
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//#region Hashtag
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hashtag: r =>
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P((input, i) => {
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const text = input.substr(i);
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const match = text.match(/^#([^\s\.,!\?#]+)/i);
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if (!match) return P.makeFailure(i, 'not a hashtag');
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let hashtag = match[1];
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hashtag = hashtag.substr(0, getTrailingPosition(hashtag));
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if (hashtag.match(/^[0-9]+$/)) return P.makeFailure(i, 'not a hashtag');
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if (input[i - 1] != null && input[i - 1].match(/[a-z0-9]/i)) return P.makeFailure(i, 'not a hashtag');
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return P.makeSuccess(i + ('#' + hashtag).length, makeNode('hashtag', { hashtag: hashtag }));
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}),
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//#endregion
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//#region Inline code
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inlineCode: r =>
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P.regexp(/`([^´\n]+?)`/, 1)
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.map(x => makeNode('inlineCode', { code: x })),
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//#endregion
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//#region Italic
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italic: r =>
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P.regexp(/<i>([\s\S]+?)<\/i>/, 1)
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.map(x => makeNodeWithChildren('italic', P.alt(
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r.bold,
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r.strike,
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r.mention,
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r.hashtag,
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r.url,
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r.link,
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r.emoji,
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r.text
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).atLeast(1).tryParse(x))),
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//#endregion
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//#region Link
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link: r =>
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P.seqObj(
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['silent', P.string('?').fallback(null).map(x => x != null)] as any,
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P.string('['),
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['text', P.regexp(/[^\n\[\]]+/)] as any,
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P.string(']'),
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P.string('('),
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['url', r.url] as any,
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P.string(')'),
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)
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.map((x: any) => {
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return makeNodeWithChildren('link', P.alt(
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r.big,
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r.small,
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r.bold,
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r.strike,
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r.italic,
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r.motion,
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r.emoji,
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r.text
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).atLeast(1).tryParse(x.text), {
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silent: x.silent,
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url: x.url.props.url
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});
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}),
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//#endregion
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//#region Math
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math: r =>
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P.regexp(/\\\((.+?)\\\)/, 1)
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.map(x => makeNode('math', { formula: x })),
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//#endregion
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//#region Mention
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mention: r =>
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P((input, i) => {
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const text = input.substr(i);
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const match = text.match(/^@[a-z0-9_]+(?:@[a-z0-9\.\-]+[a-z0-9])?/i);
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if (!match) return P.makeFailure(i, 'not a mention');
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if (input[i - 1] != null && input[i - 1].match(/[a-z0-9]/i)) return P.makeFailure(i, 'not a mention');
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return P.makeSuccess(i + match[0].length, match[0]);
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})
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.map(x => {
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const { username, host } = parseAcct(x.substr(1));
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const canonical = host != null ? `@${username}@${toUnicode(host)}` : x;
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return makeNode('mention', {
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canonical, username, host, acct: x
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});
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}),
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//#endregion
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//#region Motion
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motion: r =>
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P.alt(P.regexp(/\(\(\(([\s\S]+?)\)\)\)/, 1), P.regexp(/<motion>(.+?)<\/motion>/, 1))
|
||
.map(x => makeNodeWithChildren('motion', P.alt(
|
||
r.bold,
|
||
r.small,
|
||
r.strike,
|
||
r.italic,
|
||
r.mention,
|
||
r.hashtag,
|
||
r.emoji,
|
||
r.url,
|
||
r.link,
|
||
r.math,
|
||
r.text
|
||
).atLeast(1).tryParse(x))),
|
||
//#endregion
|
||
|
||
//#region Quote
|
||
quote: r =>
|
||
newline.then(P((input, i) => {
|
||
const text = input.substr(i);
|
||
if (!text.match(/^>[\s\S]+?/)) return P.makeFailure(i, 'not a quote');
|
||
const quote = takeWhile(line => line.startsWith('>'), text.split('\n'));
|
||
const qInner = quote.join('\n').replace(/^>/gm, '').replace(/^ /gm, '');
|
||
if (qInner == '') return P.makeFailure(i, 'not a quote');
|
||
const contents = r.root.tryParse(qInner);
|
||
return P.makeSuccess(i + quote.join('\n').length + 1, makeNodeWithChildren('quote', contents));
|
||
})),
|
||
//#endregion
|
||
|
||
//#region Search
|
||
search: r =>
|
||
newline.then(P((input, i) => {
|
||
const text = input.substr(i);
|
||
const match = text.match(/^(.+?)( | )(検索|\[検索\]|Search|\[Search\])(\n|$)/i);
|
||
if (!match) return P.makeFailure(i, 'not a search');
|
||
return P.makeSuccess(i + match[0].length, makeNode('search', { query: match[1], content: match[0].trim() }));
|
||
})),
|
||
//#endregion
|
||
|
||
//#region Strike
|
||
strike: r =>
|
||
P.regexp(/~~(.+?)~~/, 1)
|
||
.map(x => makeNodeWithChildren('strike', P.alt(
|
||
r.bold,
|
||
r.italic,
|
||
r.mention,
|
||
r.hashtag,
|
||
r.url,
|
||
r.link,
|
||
r.emoji,
|
||
r.text
|
||
).atLeast(1).tryParse(x))),
|
||
//#endregion
|
||
|
||
//#region Title
|
||
title: r =>
|
||
newline.then(P((input, i) => {
|
||
const text = input.substr(i);
|
||
const match = text.match(/^((【|\[)(.+?)(】|]))(\n|$)/);
|
||
if (!match) return P.makeFailure(i, 'not a title');
|
||
const q = match[1].trim().substring(1, match[1].length - 1);
|
||
const contents = P.alt(
|
||
r.big,
|
||
r.small,
|
||
r.bold,
|
||
r.strike,
|
||
r.italic,
|
||
r.motion,
|
||
r.url,
|
||
r.link,
|
||
r.mention,
|
||
r.hashtag,
|
||
r.emoji,
|
||
r.inlineCode,
|
||
r.text
|
||
).atLeast(1).tryParse(q);
|
||
return P.makeSuccess(i + match[0].length, makeNodeWithChildren('title', contents));
|
||
})),
|
||
//#endregion
|
||
|
||
//#region URL
|
||
url: r =>
|
||
P((input, i) => {
|
||
const text = input.substr(i);
|
||
const match = text.match(/^https?:\/\/[\w\/:%#@\$&\?!\(\)\[\]~\.,=\+\-]+/);
|
||
if (!match) return P.makeFailure(i, 'not a url');
|
||
let url = match[0];
|
||
url = url.substr(0, getTrailingPosition(url));
|
||
if (url.endsWith('.')) url = url.substr(0, url.lastIndexOf('.'));
|
||
if (url.endsWith(',')) url = url.substr(0, url.lastIndexOf(','));
|
||
return P.makeSuccess(i + url.length, url);
|
||
})
|
||
.map(x => makeNode('url', { url: x })),
|
||
//#endregion
|
||
});
|
||
|
||
export default mfm;
|