Role.php

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<?php

require_once 'PEAR/Installer/Role/Common.php';
require_once 'PEAR/XMLParser.php';
class PEAR_Installer_Role
{
    public static function initializeConfig(&$config)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }
 
        foreach ($GLOBALS['_PEAR_INSTALLER_ROLES'] as $class => $info) {
            if (!$info['config_vars']) {
                continue;
            }
 
            $config->_addConfigVars($class, $info['config_vars']);
        }
    }

    public static function &factory($pkg, $role, &$config)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }
 
        if (!in_array($role, PEAR_Installer_Role::getValidRoles($pkg->getPackageType()))) {
            $a = false;
            return $a;
        }
 
        $a = 'PEAR_Installer_Role_' . ucfirst($role);
        if (!class_exists($a)) {
            require_once str_replace('_', '/', $a) . '.php';
        }
 
        $b = new $a($config);
        return $b;
    }

    public static function getValidRoles($release, $clear = false)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }
 
        static $ret = array();
        if ($clear) {
            $ret = array();
        }
 
        if (isset($ret[$release])) {
            return $ret[$release];
        }
 
        $ret[$release] = array();
        foreach ($GLOBALS['_PEAR_INSTALLER_ROLES'] as $role => $okreleases) {
            if (in_array($release, $okreleases['releasetypes'])) {
                $ret[$release][] = strtolower(str_replace('PEAR_Installer_Role_', '', $role));
            }
        }
 
        return $ret[$release];
    }

    public static function getInstallableRoles($clear = false)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }
 
        static $ret;
        if ($clear) {
            unset($ret);
        }
 
        if (isset($ret)) {
            return $ret;
        }
 
        $ret = array();
        foreach ($GLOBALS['_PEAR_INSTALLER_ROLES'] as $role => $okreleases) {
            if ($okreleases['installable']) {
                $ret[] = strtolower(str_replace('PEAR_Installer_Role_', '', $role));
            }
        }
 
        return $ret;
    }

    public static function getBaseinstallRoles($clear = false)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }
 
        static $ret;
        if ($clear) {
            unset($ret);
        }
 
        if (isset($ret)) {
            return $ret;
        }
 
        $ret = array();
        foreach ($GLOBALS['_PEAR_INSTALLER_ROLES'] as $role => $okreleases) {
            if ($okreleases['honorsbaseinstall']) {
                $ret[] = strtolower(str_replace('PEAR_Installer_Role_', '', $role));
            }
        }
 
        return $ret;
    }

    public static function getPhpRoles($clear = false)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }
 
        static $ret;
        if ($clear) {
            unset($ret);
        }
 
        if (isset($ret)) {
            return $ret;
        }
 
        $ret = array();
        foreach ($GLOBALS['_PEAR_INSTALLER_ROLES'] as $role => $okreleases) {
            if ($okreleases['phpfile']) {
                $ret[] = strtolower(str_replace('PEAR_Installer_Role_', '', $role));
            }
        }
 
        return $ret;
    }

    public static function registerRoles($dir = null)
    {
        $GLOBALS['_PEAR_INSTALLER_ROLES'] = array();
        $parser = new PEAR_XMLParser;
        if ($dir === null) {
            $dir = dirname(__FILE__) . '/Role';
        }
 
        if (!file_exists($dir) || !is_dir($dir)) {
            return PEAR::raiseError("registerRoles: opendir($dir) failed: does not exist/is not directory");
        }
 
        $dp = @opendir($dir);
        if (empty($dp)) {
            return PEAR::raiseError("registerRoles: opendir($dir) failed: $php_errmsg");
        }
 
        while ($entry = readdir($dp)) {
            if ($entry[0] == '.' || substr($entry, -4) != '.xml') {
                continue;
            }
 
            $class = "PEAR_Installer_Role_".substr($entry, 0, -4);
            // List of roles
            if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'][$class])) {
                $file = "$dir/$entry";
                $parser->parse(file_get_contents($file));
                $data = $parser->getData();
                if (!is_array($data['releasetypes'])) {
                    $data['releasetypes'] = array($data['releasetypes']);
                }
 
                $GLOBALS['_PEAR_INSTALLER_ROLES'][$class] = $data;
            }
        }
 
        closedir($dp);
        ksort($GLOBALS['_PEAR_INSTALLER_ROLES']);
        PEAR_Installer_Role::getBaseinstallRoles(true);
        PEAR_Installer_Role::getInstallableRoles(true);
        PEAR_Installer_Role::getPhpRoles(true);
        PEAR_Installer_Role::getValidRoles('****', true);
        return true;
    }
}