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// HTML block
'use strict';
var block_names = require('../common/html_blocks');
var HTML_OPEN_CLOSE_TAG_RE = require('../common/html_re').HTML_OPEN_CLOSE_TAG_RE;
// An array of opening and corresponding closing sequences for html tags,
// last argument defines whether it can terminate a paragraph or not
//
var HTML_SEQUENCES = [
[ /^<(script|pre|style|textarea)(?=(\s|>|$))/i, /<\/(script|pre|style|textarea)>/i, true ],
[ /^<!--/, /-->/, true ],
[ /^<\?/, /\?>/, true ],
[ /^<![A-Z]/, />/, true ],
[ /^<!\[CDATA\[/, /\]\]>/, true ],
[ new RegExp('^</?(' + block_names.join('|') + ')(?=(\\s|/?>|$))', 'i'), /^$/, true ],
[ new RegExp(HTML_OPEN_CLOSE_TAG_RE.source + '\\s*$'), /^$/, false ]
];
module.exports = function html_block(state, startLine, endLine, silent) {
var i, nextLine, token, lineText,
pos = state.bMarks[startLine] + state.tShift[startLine],
max = state.eMarks[startLine];
// if it's indented more than 3 spaces, it should be a code block
if (state.sCount[startLine] - state.blkIndent >= 4) { return false; }
if (!state.md.options.html) { return false; }
if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false; }
lineText = state.src.slice(pos, max);
for (i = 0; i < HTML_SEQUENCES.length; i++) {
if (HTML_SEQUENCES[i][0].test(lineText)) { break; }
}
if (i === HTML_SEQUENCES.length) { return false; }
if (silent) {
// true if this sequence can be a terminator, false otherwise
return HTML_SEQUENCES[i][2];
}
nextLine = startLine + 1;
// If we are here - we detected HTML block.
// Let's roll down till block end.
if (!HTML_SEQUENCES[i][1].test(lineText)) {
for (; nextLine < endLine; nextLine++) {
if (state.sCount[nextLine] < state.blkIndent) { break; }
pos = state.bMarks[nextLine] + state.tShift[nextLine];
max = state.eMarks[nextLine];
lineText = state.src.slice(pos, max);
if (HTML_SEQUENCES[i][1].test(lineText)) {
if (lineText.length !== 0) { nextLine++; }
break;
}
}
}
state.line = nextLine;
token = state.push('html_block', '', 0);
token.map = [ startLine, nextLine ];
token.content = state.getLines(startLine, nextLine, state.blkIndent, true);
return true;
};
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