function test_format()
{
$diff = new Diff(DIFF_SPACE);
$one = 'a b c d e f g';
$two = 'a c d e t t f';
$res = $diff->compare($one, $two);
$out = $diff->format($res);
$expected = array(array('', 'a'), array('-', 'b'), array('', 'c'), array('', 'd'), array('', 'e'), array('+', 't'), array('+', 't'), array('', 'f'), array('-', 'g'));
$this->assertEquals($out, $expected);
}
/**
* Returns a comparison of the two specified versions of the specified item
* in the form of an associative array.
*
* @param string name of collection
* @param string name of unique id column
* @param mixed unique id of item
* @param integer unique revision id of newer version
* @param integer unique revision id of older version
* @return array hash
*
*/
function compare($collection, $key, $id, $rid1, $rid2, $diff_type = DIFF_HTML)
{
// returns diff as associative array
$rev1 = $this->getRevision($collection, $key, $id, $rid1, true);
if (!is_object($rev1)) {
$this->error = 'Revision #' . $rid1 . ' does not exist.';
return false;
}
$rev2 = $this->getRevision($collection, $key, $id, $rid2, true);
if (!is_object($rev2)) {
$this->error = 'Revision #' . $rid2 . ' does not exists.';
return false;
}
$diff = new Diff(DIFF_HTML);
$out = array();
foreach (array_keys(get_object_vars($rev1)) as $key) {
$out[$key] = $diff->format($diff->compare($rev1->{$key}, $rev2->{$key}));
}
return $out;
}
