/**
* Compare two package's package.xml, and sort
* so that dependencies are installed first
*
* This is a crude compare, real dependency checking is done on install.
* The only purpose this serves is to make the command-line
* order-independent (you can list a dependent package first, and
* installation occurs in the order required)
* @access private
*/
function _sortPkgDeps($p1, $p2)
{
$p1name = $p1['info']['package'];
$p2name = $p2['info']['package'];
$p1deps = PEAR_Common::_getPkgDeps($p1);
$p2deps = PEAR_Common::_getPkgDeps($p2);
if (!count($p1deps) && !count($p2deps)) {
return 0;
// order makes no difference
}
if (!count($p1deps)) {
return -1;
// package 2 has dependencies, package 1 doesn't
}
if (!count($p2deps)) {
return 1;
// package 2 has dependencies, package 1 doesn't
}
// both have dependencies
if (in_array($p1name, $p2deps)) {
return -1;
// put package 1 first
}
if (in_array($p2name, $p1deps)) {
return 1;
// put package 2 first
}
// doesn't really matter if neither depends on the other
return 0;
}
