68 lines
1.1 KiB
JavaScript
68 lines
1.1 KiB
JavaScript
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/**
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* Misskey Text Analyzer
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*/
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const elements = [
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require('./elements/bold'),
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require('./elements/url'),
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require('./elements/mention'),
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require('./elements/hashtag')
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];
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function analyze(source) {
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if (source == '') {
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return null;
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}
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const tokens = [];
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function push(token) {
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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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if (el.test(source, i)) {
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let tokens = el.parse(source);
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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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}
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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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tokens[0] = [tokens[0]];
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return tokens.reduce((a, b) => {
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if (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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});
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}
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module.exports = analyze;
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