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129 lines
3.6 KiB
129 lines
3.6 KiB
// Block quotes
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'use strict';
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module.exports = function blockquote(state, startLine, endLine, silent) {
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var nextLine, lastLineEmpty, oldTShift, oldBMarks, oldIndent, oldParentType, lines,
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terminatorRules, token,
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i, l, terminate,
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pos = state.bMarks[startLine] + state.tShift[startLine],
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max = state.eMarks[startLine];
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// check the block quote marker
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if (state.src.charCodeAt(pos++) !== 0x3E/* > */) { return false; }
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// we know that it's going to be a valid blockquote,
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// so no point trying to find the end of it in silent mode
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if (silent) { return true; }
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// skip one optional space after '>'
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if (state.src.charCodeAt(pos) === 0x20) { pos++; }
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oldIndent = state.blkIndent;
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state.blkIndent = 0;
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oldBMarks = [ state.bMarks[startLine] ];
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state.bMarks[startLine] = pos;
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// check if we have an empty blockquote
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pos = pos < max ? state.skipSpaces(pos) : pos;
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lastLineEmpty = pos >= max;
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oldTShift = [ state.tShift[startLine] ];
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state.tShift[startLine] = pos - state.bMarks[startLine];
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terminatorRules = state.md.block.ruler.getRules('blockquote');
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// Search the end of the block
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//
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// Block ends with either:
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// 1. an empty line outside:
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// ```
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// > test
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//
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// ```
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// 2. an empty line inside:
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// ```
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// >
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// test
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// ```
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// 3. another tag
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// ```
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// > test
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// - - -
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// ```
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for (nextLine = startLine + 1; 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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if (pos >= max) {
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// Case 1: line is not inside the blockquote, and this line is empty.
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break;
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}
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if (state.src.charCodeAt(pos++) === 0x3E/* > */) {
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// This line is inside the blockquote.
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// skip one optional space after '>'
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if (state.src.charCodeAt(pos) === 0x20) { pos++; }
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oldBMarks.push(state.bMarks[nextLine]);
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state.bMarks[nextLine] = pos;
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pos = pos < max ? state.skipSpaces(pos) : pos;
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lastLineEmpty = pos >= max;
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oldTShift.push(state.tShift[nextLine]);
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state.tShift[nextLine] = pos - state.bMarks[nextLine];
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continue;
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}
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// Case 2: line is not inside the blockquote, and the last line was empty.
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if (lastLineEmpty) { break; }
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// Case 3: another tag found.
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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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oldBMarks.push(state.bMarks[nextLine]);
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oldTShift.push(state.tShift[nextLine]);
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// A negative number means that this is a paragraph continuation;
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//
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// Any negative number will do the job here, but it's better for it
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// to be large enough to make any bugs obvious.
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state.tShift[nextLine] = -1337;
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}
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oldParentType = state.parentType;
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state.parentType = 'blockquote';
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token = state.push('blockquote_open', 'blockquote', 1);
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token.markup = '>';
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token.map = lines = [ startLine, 0 ];
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state.md.block.tokenize(state, startLine, nextLine);
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token = state.push('blockquote_close', 'blockquote', -1);
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token.markup = '>';
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state.parentType = oldParentType;
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lines[1] = state.line;
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// Restore original tShift; this might not be necessary since the parser
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// has already been here, but just to make sure we can do that.
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for (i = 0; i < oldTShift.length; i++) {
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state.bMarks[i + startLine] = oldBMarks[i];
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state.tShift[i + startLine] = oldTShift[i];
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}
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state.blkIndent = oldIndent;
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return true;
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};
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