devsite/node_modules/markdown-it/lib/rules_inline/backticks.js

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2024-07-08 01:49:38 +00:00
// Parse backticks
'use strict';
module.exports = function backtick(state, silent) {
var start, max, marker, token, matchStart, matchEnd, openerLength, closerLength,
pos = state.pos,
ch = state.src.charCodeAt(pos);
if (ch !== 0x60/* ` */) { return false; }
start = pos;
pos++;
max = state.posMax;
// scan marker length
while (pos < max && state.src.charCodeAt(pos) === 0x60/* ` */) { pos++; }
marker = state.src.slice(start, pos);
openerLength = marker.length;
if (state.backticksScanned && (state.backticks[openerLength] || 0) <= start) {
if (!silent) state.pending += marker;
state.pos += openerLength;
return true;
}
matchEnd = pos;
// Nothing found in the cache, scan until the end of the line (or until marker is found)
while ((matchStart = state.src.indexOf('`', matchEnd)) !== -1) {
matchEnd = matchStart + 1;
// scan marker length
while (matchEnd < max && state.src.charCodeAt(matchEnd) === 0x60/* ` */) { matchEnd++; }
closerLength = matchEnd - matchStart;
if (closerLength === openerLength) {
// Found matching closer length.
if (!silent) {
token = state.push('code_inline', 'code', 0);
token.markup = marker;
token.content = state.src.slice(pos, matchStart)
.replace(/\n/g, ' ')
.replace(/^ (.+) $/, '$1');
}
state.pos = matchEnd;
return true;
}
// Some different length found, put it in cache as upper limit of where closer can be found
state.backticks[closerLength] = matchStart;
}
// Scanned through the end, didn't find anything
state.backticksScanned = true;
if (!silent) state.pending += marker;
state.pos += openerLength;
return true;
};