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// Block quotes
'use strict';
var isSpace = require('../common/utils').isSpace;
module.exports = function blockquote(state, startLine, endLine, silent) {
var nextLine, lastLineEmpty, oldTShift, oldSCount, oldBMarks, oldIndent, oldParentType, lines, initial, offset, ch,
terminatorRules, token,
i, l, terminate,
pos = state.bMarks[startLine] + state.tShift[startLine],
max = state.eMarks[startLine];
// check the block quote marker
if (state.src.charCodeAt(pos++) !== 0x3E/* > */) { return false; }
// we know that it's going to be a valid blockquote,
// so no point trying to find the end of it in silent mode
if (silent) { return true; }
// skip one optional space (but not tab, check cmark impl) after '>'
if (state.src.charCodeAt(pos) === 0x20) { pos++; }
oldIndent = state.blkIndent;
state.blkIndent = 0;
// skip spaces after ">" and re-calculate offset
initial = offset = state.sCount[startLine] + pos - (state.bMarks[startLine] + state.tShift[startLine]);
oldBMarks = [ state.bMarks[startLine] ];
state.bMarks[startLine] = pos;
while (pos < max) {
ch = state.src.charCodeAt(pos);
if (isSpace(ch)) {
if (ch === 0x09) {
offset += 4 - offset % 4;
} else {
offset++;
}
} else {
break;
}
pos++;
}
lastLineEmpty = pos >= max;
oldSCount = [ state.sCount[startLine] ];
state.sCount[startLine] = offset - initial;
oldTShift = [ state.tShift[startLine] ];
state.tShift[startLine] = pos - state.bMarks[startLine];
terminatorRules = state.md.block.ruler.getRules('blockquote');
// Search the end of the block
//
// Block ends with either:
// 1. an empty line outside:
// ```
// > test
//
// ```
// 2. an empty line inside:
// ```
// >
// test
// ```
// 3. another tag
// ```
// > test
// - - -
// ```
for (nextLine = startLine + 1; nextLine < endLine; nextLine++) {
if (state.sCount[nextLine] < oldIndent) { break; }
pos = state.bMarks[nextLine] + state.tShift[nextLine];
max = state.eMarks[nextLine];
if (pos >= max) {
// Case 1: line is not inside the blockquote, and this line is empty.
break;
}
if (state.src.charCodeAt(pos++) === 0x3E/* > */) {
// This line is inside the blockquote.
// skip one optional space (but not tab, check cmark impl) after '>'
if (state.src.charCodeAt(pos) === 0x20) { pos++; }
// skip spaces after ">" and re-calculate offset
initial = offset = state.sCount[nextLine] + pos - (state.bMarks[nextLine] + state.tShift[nextLine]);
oldBMarks.push(state.bMarks[nextLine]);
state.bMarks[nextLine] = pos;
while (pos < max) {
ch = state.src.charCodeAt(pos);
if (isSpace(ch)) {
if (ch === 0x09) {
offset += 4 - offset % 4;
} else {
offset++;
}
} else {
break;
}
pos++;
}
lastLineEmpty = pos >= max;
oldSCount.push(state.sCount[nextLine]);
state.sCount[nextLine] = offset - initial;
oldTShift.push(state.tShift[nextLine]);
state.tShift[nextLine] = pos - state.bMarks[nextLine];
continue;
}
// Case 2: line is not inside the blockquote, and the last line was empty.
if (lastLineEmpty) { break; }
// Case 3: another tag found.
terminate = false;
for (i = 0, l = terminatorRules.length; i < l; i++) {
if (terminatorRules[i](state, nextLine, endLine, true)) {
terminate = true;
break;
}
}
if (terminate) { break; }
oldBMarks.push(state.bMarks[nextLine]);
oldTShift.push(state.tShift[nextLine]);
oldSCount.push(state.sCount[nextLine]);
// A negative indentation means that this is a paragraph continuation
//
state.sCount[nextLine] = -1;
}
oldParentType = state.parentType;
state.parentType = 'blockquote';
token = state.push('blockquote_open', 'blockquote', 1);
token.markup = '>';
token.map = lines = [ startLine, 0 ];
state.md.block.tokenize(state, startLine, nextLine);
token = state.push('blockquote_close', 'blockquote', -1);
token.markup = '>';
state.parentType = oldParentType;
lines[1] = state.line;
// Restore original tShift; this might not be necessary since the parser
// has already been here, but just to make sure we can do that.
for (i = 0; i < oldTShift.length; i++) {
state.bMarks[i + startLine] = oldBMarks[i];
state.tShift[i + startLine] = oldTShift[i];
state.sCount[i + startLine] = oldSCount[i];
}
state.blkIndent = oldIndent;
return true;
};