75 lines
1.8 KiB
JavaScript
75 lines
1.8 KiB
JavaScript
// special handling for IMG tags on a line by themeselves
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// we always have to handle it as so it is an inline
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// see: https://talk.commonmark.org/t/newline-and-img-tags/2511
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const REGEX = /^<img.*\\?>\s*$/i;
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function rule(state, startLine, endLine) {
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var nextLine, token, lineText,
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pos = state.bMarks[startLine] + state.tShift[startLine],
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max = state.eMarks[startLine];
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// if it's indented more than 3 spaces, it should be a code block
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if (state.sCount[startLine] - state.blkIndent >= 4) { return false; }
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if (!state.md.options.html) { return false; }
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if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false; }
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let pos1 = state.src.charCodeAt(pos+1);
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if (pos1 !== 73 /* I */ && pos1 !== 105 /* i */) { return false; }
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lineText = state.src.slice(pos, max);
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if (!REGEX.test(lineText)) {
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return false;
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}
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let lines = [];
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lines.push(lineText);
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nextLine = startLine + 1;
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for (; nextLine < endLine; nextLine++) {
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pos = state.bMarks[nextLine] + state.tShift[nextLine];
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max = state.eMarks[nextLine];
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lineText = state.src.slice(pos, max);
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if (lineText.trim() === "") {
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break;
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}
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if (!REGEX.test(lineText)) {
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break;
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}
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lines.push(lineText);
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}
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state.line = nextLine;
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let oldParentType = state.parentType;
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state.parentType = 'paragraph';
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token = state.push('paragraph_open', 'p', 0);
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token.map = [startLine, state.line];
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token = state.push('inline', '', 0);
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token.content = lines.join('\n');
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token.map = [startLine, state.line];
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token.children = [];
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token = state.push('paragraph_close', 'p', -1);
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state.parentType = oldParentType;
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return true;
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}
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export function setup(helper) {
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if (!helper.markdownIt) { return; }
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helper.registerPlugin(md=>{
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md.block.ruler.before('html_block', 'html_img', rule, {alt: ['fence']});
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});
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}
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