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