/**
* @param Glip_GitCommit $a
* @param Glip_GitCommit $b
* @return array
*/
public static function treeDiff($a, $b)
{
return Glip_GitTree::treeDiff($a ? $a->getTree() : null, $b ? $b->getTree() : null);
}
/**
* @param Glip_GitTree $a_tree
* @param Glip_GitTree $b_tree
* @return array
*/
public static function treeDiff($a_tree, $b_tree)
{
$a_blobs = $a_tree ? $a_tree->listRecursive() : array();
$b_blobs = $b_tree ? $b_tree->listRecursive() : array();
$a_files = array_keys($a_blobs);
$b_files = array_keys($b_blobs);
$changes = array();
sort($a_files);
sort($b_files);
$a = $b = 0;
while ($a < count($a_files) || $b < count($b_files)) {
if ($a < count($a_files) && $b < count($b_files)) {
$cmp = strcmp($a_files[$a], $b_files[$b]);
} else {
$cmp = 0;
}
if ($b >= count($b_files) || $cmp < 0) {
$changes[$a_files[$a]] = self::TREEDIFF_REMOVED;
$a++;
} else {
if ($a >= count($a_files) || $cmp > 0) {
$changes[$b_files[$b]] = self::TREEDIFF_ADDED;
$b++;
} else {
if ($a_blobs[$a_files[$a]] != $b_blobs[$b_files[$b]]) {
$changes[$a_files[$a]] = self::TREEDIFF_CHANGED;
}
$a++;
$b++;
}
}
}
return $changes;
}