99 lines
2.3 KiB
TypeScript
99 lines
2.3 KiB
TypeScript
/**
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* Misskey Text Analyzer
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*/
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import { TextElementBold } from './elements/bold';
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import { TextElementCode } from './elements/code';
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import { TextElementEmoji } from './elements/emoji';
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import { TextElementHashtag } from './elements/hashtag';
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import { TextElementInlineCode } from './elements/inline-code';
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import { TextElementLink } from './elements/link';
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import { TextElementMention } from './elements/mention';
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import { TextElementQuote } from './elements/quote';
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import { TextElementSearch } from './elements/search';
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import { TextElementTitle } from './elements/title';
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import { TextElementUrl } from './elements/url';
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const elements = [
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require('./elements/bold'),
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require('./elements/title'),
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require('./elements/url'),
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require('./elements/link'),
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require('./elements/mention'),
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require('./elements/hashtag'),
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require('./elements/code'),
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require('./elements/inline-code'),
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require('./elements/quote'),
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require('./elements/emoji'),
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require('./elements/search')
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].map(element => element.default as TextElementProcessor);
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export type TextElement = { type: 'text', content: string }
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| TextElementBold
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| TextElementCode
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| TextElementEmoji
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| TextElementHashtag
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| TextElementInlineCode
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| TextElementLink
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| TextElementMention
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| TextElementQuote
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| TextElementSearch
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| TextElementTitle
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| TextElementUrl;
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export type TextElementProcessor = (text: string, i: number) => TextElement | TextElement[];
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export default (source: string): TextElement[] => {
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if (source == '') {
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return null;
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}
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const tokens: TextElement[] = [];
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function push(token: TextElement) {
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if (token != null) {
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tokens.push(token);
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source = source.substr(token.content.length);
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}
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}
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let i = 0;
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// パース
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while (source != '') {
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const parsed = elements.some(el => {
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let _tokens = el(source, i);
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if (_tokens) {
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if (!Array.isArray(_tokens)) {
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_tokens = [_tokens];
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}
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_tokens.forEach(push);
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return true;
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} else {
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return false;
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}
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});
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if (!parsed) {
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push({
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type: 'text',
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content: source[0]
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});
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}
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i++;
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}
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// テキストを纏める
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return tokens.reduce((a, b) => {
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if (a.length && a[a.length - 1].type == 'text' && b.type == 'text') {
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const tail = a.pop();
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return a.concat({
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type: 'text',
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content: tail.content + b.content
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});
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} else {
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return a.concat(b);
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}
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}, [] as TextElement[]);
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};
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