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84 lines
2.5 KiB
JavaScript
84 lines
2.5 KiB
JavaScript
// lheading (---, ===)
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'use strict';
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module.exports = function lheading(state, startLine, endLine/*, silent*/) {
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var content, terminate, i, l, token, pos, max, level, marker,
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nextLine = startLine + 1, oldParentType,
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terminatorRules = state.md.block.ruler.getRules('paragraph');
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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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oldParentType = state.parentType;
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state.parentType = 'paragraph'; // use paragraph to match terminatorRules
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// jump line-by-line until empty one or EOF
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for (; nextLine < endLine && !state.isEmpty(nextLine); nextLine++) {
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// this would be a code block normally, but after paragraph
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// it's considered a lazy continuation regardless of what's there
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if (state.sCount[nextLine] - state.blkIndent > 3) { continue; }
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//
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// Check for underline in setext header
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//
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if (state.sCount[nextLine] >= state.blkIndent) {
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pos = state.bMarks[nextLine] + state.tShift[nextLine];
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max = state.eMarks[nextLine];
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if (pos < max) {
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marker = state.src.charCodeAt(pos);
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if (marker === 0x2D/* - */ || marker === 0x3D/* = */) {
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pos = state.skipChars(pos, marker);
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pos = state.skipSpaces(pos);
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if (pos >= max) {
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level = (marker === 0x3D/* = */ ? 1 : 2);
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break;
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}
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}
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}
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}
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// quirk for blockquotes, this line should already be checked by that rule
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if (state.sCount[nextLine] < 0) { continue; }
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// Some tags can terminate paragraph without empty line.
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terminate = false;
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for (i = 0, l = terminatorRules.length; i < l; i++) {
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if (terminatorRules[i](state, nextLine, endLine, true)) {
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terminate = true;
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break;
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}
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}
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if (terminate) { break; }
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}
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if (!level) {
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// Didn't find valid underline
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return false;
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}
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content = state.getLines(startLine, nextLine, state.blkIndent, false).trim();
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state.line = nextLine + 1;
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token = state.push('heading_open', 'h' + String(level), 1);
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token.markup = String.fromCharCode(marker);
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token.map = [ startLine, state.line ];
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token = state.push('inline', '', 0);
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token.content = content;
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token.map = [ startLine, state.line - 1 ];
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token.children = [];
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token = state.push('heading_close', 'h' + String(level), -1);
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token.markup = String.fromCharCode(marker);
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state.parentType = oldParentType;
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return true;
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};
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