[MFM] Improve hashtag detection
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2 changed files with 39 additions and 10 deletions
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@ -30,17 +30,23 @@ function makeNodeWithChildren(name: string, children: Node[], props?: any): Node
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}
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function getTrailingPosition(x: string): number {
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let pendingBracket = 0;
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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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if (char == ')') {
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if (pendingBracket > 0) {
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pendingBracket--;
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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 (char == '(') {
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pendingBracket++;
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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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@ -156,7 +162,7 @@ const mfm = P.createLanguage({
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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 (!['\n', ' ', '(', null, undefined].includes(input[i - 1])) return P.makeFailure(i, 'require space before "#"');
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if (!['\n', ' ', '(', '「', null, undefined].includes(input[i - 1])) return P.makeFailure(i, 'require space before "#"');
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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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29
test/mfm.ts
29
test/mfm.ts
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@ -213,21 +213,44 @@ describe('Text', () => {
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});
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it('with brackets', () => {
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const tokens = analyze('(#foo)');
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const tokens1 = analyze('(#foo)');
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assert.deepEqual([
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text('('),
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node('hashtag', { hashtag: 'foo' }),
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text(')'),
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], tokens1);
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const tokens2 = analyze('「#foo」');
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assert.deepEqual([
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text('「'),
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node('hashtag', { hashtag: 'foo' }),
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text('」'),
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], tokens2);
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});
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it('with mixed brackets', () => {
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const tokens = analyze('「#foo(bar)」');
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assert.deepEqual([
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text('「'),
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node('hashtag', { hashtag: 'foo(bar)' }),
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text('」'),
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], tokens);
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});
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it('with brackets (space before)', () => {
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const tokens = analyze('(bar #foo)');
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const tokens1 = analyze('(bar #foo)');
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assert.deepEqual([
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text('(bar '),
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node('hashtag', { hashtag: 'foo' }),
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text(')'),
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], tokens);
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], tokens1);
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const tokens2 = analyze('「bar #foo」');
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assert.deepEqual([
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text('「bar '),
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node('hashtag', { hashtag: 'foo' }),
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text('」'),
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], tokens2);
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});
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it('disallow number only', () => {
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