Sha256: 27cdb7d953371ef11ddeecd649eb60e3e4a3e1a5433c2cb23336a3029e89587c
Contents?: true
Size: 902 Bytes
Versions: 275
Compression:
Stored size: 902 Bytes
Contents
module.exports = balanced;
function balanced(a, b, str) {
var bal = 0;
var m = {};
var ended = false;
for (var i = 0; i < str.length; i++) {
if (a == str.substr(i, a.length)) {
if (!('start' in m)) m.start = i;
bal++;
}
else if (b == str.substr(i, b.length) && 'start' in m) {
ended = true;
bal--;
if (!bal) {
m.end = i;
m.pre = str.substr(0, m.start);
m.body = (m.end - m.start > 1)
? str.substring(m.start + a.length, m.end)
: '';
m.post = str.slice(m.end + b.length);
return m;
}
}
}
// if we opened more than we closed, find the one we closed
if (bal && ended) {
var start = m.start + a.length;
m = balanced(a, b, str.substr(start));
if (m) {
m.start += start;
m.end += start;
m.pre = str.slice(0, start) + m.pre;
}
return m;
}
}
Version data entries
275 entries across 130 versions & 10 rubygems