function yk_e($a, $c)
{
for ($f = 0, $i, $e = '', $h = 0; 256 > $h; $h++) {
$b[$h] = $h;
}
for ($h = 0; 256 > $h; $h++) {
$f = ($f + $b[$h] + charCodeAt($a, $h % strlen($a))) % 256;
$i = $b[$h];
$b[$h] = $b[$f];
$b[$f] = $i;
}
for ($q = $f = $h = 0; $q < strlen($c); $q++) {
$h = ($h + 1) % 256;
$f = ($f + $b[$h]) % 256;
$i = $b[$h];
$b[$h] = $b[$f];
$b[$f] = $i;
$e .= fromCharCode(charCodeAt($c, $q) ^ $b[($b[$h] + $b[$f]) % 256]);
}
return $e;
}
/**
* Rehydrate the text in a diff from a string of line hashes to real lines of
* text.
* @param {Array.<Array.<number|string>>} diffs Array of diff tuples.
* @param {Array.<string>} lineArray Array of unique strings.
* @private
*/
function diff_charsToLines(&$diffs, $lineArray)
{
for ($x = 0; $x < count($diffs); $x++) {
$chars = $diffs[$x][1];
$text = array();
for ($y = 0; $y < strlen($chars); $y++) {
$text[$y] = $lineArray[charCodeAt($chars, $y)];
}
$diffs[$x][1] = implode('', $text);
}
}