config.php

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                $layer = NULL;
                break;
            case 2:
                $config_key = $params[0];
                $layer = $params[1];
                if ($error = $this->_checkLayer($layer)) {
                    return $this->raiseError("config-get:$error");
                }
                break;
            case 0:
            default:
                return $this->raiseError("config-get expects 1 or 2 parameters");
        }

        $channel = isset($options['channel']) ? $options['channel'] : $this->config->get('default_channel');
        $reg = &$this->config->getRegistry();

        if (!$reg->channelExists($channel)) {
            return $this->raiseError('Channel "' . $channel . '" does not exist');
        }

        $this->ui->outputData($this->config->get($config_key, $layer, $channel), $command);

        return true;
    }

    // }}}
    // {{{ doConfigSet()

    function doConfigSet($command, $options, $params)
    {
        // $param[0] -> a parameter to set
        // $param[1] -> the value for the parameter
        // $param[2] -> the layer
        $failmsg = '';
        if (sizeof($params) < 2 || sizeof($params) > 3) {
            $failmsg .= "config-set expects 2 or 3 parameters";
            return PEAR::raiseError($failmsg);
        }
        if (isset($params[2]) && ($error = $this->_checkLayer($params[2]))) {
            $failmsg .= $error;
            return PEAR::raiseError("config-set:$failmsg");
        }
        $channel = isset($options['channel']) ? $options['channel'] :
            $this->config->get('default_channel');
        $reg = &$this->config->getRegistry();
        if (!$reg->channelExists($channel)) {
            return $this->raiseError('Channel "' . $channel . '" does not exist');
        }
        if ($params[0] == 'default_channel') {
            if (!$reg->channelExists($params[1])) {
                return $this->raiseError('Channel "' . $params[1] . '" does not exist');
            }
        }
        if (count($params) == 2) {
            array_push($params, 'user');
            $layer = 'user';
        } else {
            $layer = $params[2];
        }
        array_push($params, $channel);
        if (!call_user_func_array(array(&$this->config, 'set'), $params))
        {
            array_pop($params);
            $failmsg = "config-set (" . implode(", ", $params) . ") failed, channel $channel";
        } else {
            $this->config->store($layer);
        }
        if ($failmsg) {
            return $this->raiseError($failmsg);
        }
        $this->ui->outputData('config-set succeeded', $command);
        return true;
    }

    // }}}
    // {{{ doConfigHelp()

    function doConfigHelp($command, $options, $params)
    {
        if (empty($params)) {
            $params = $this->config->getKeys();
        }
        $data['caption']  = "Config help" . ((count($params) == 1) ? " for $params[0]" : '');
        $data['headline'] = array('Name', 'Type', 'Description');
        $data['border']   = true;
        foreach ($params as $name) {
            $type = $this->config->getType($name);
            $docs = $this->config->getDocs($name);
            if ($type == 'set') {
                $docs = rtrim($docs) . "\nValid set: " .
                    implode(' ', $this->config->getSetValues($name));
            }
            $data['data'][] = array($name, $type, $docs);
        }
        $this->ui->outputData($data, $command);
    }

    // }}}
    // {{{ doConfigCreate()

    function doConfigCreate($command, $options, $params)
    {
        if (count($params) != 2) {
            return PEAR::raiseError('config-create: must have 2 parameters, root path and ' .
                'filename to save as');
        }
        $root = $params[0];
        // Clean up the DIRECTORY_SEPARATOR mess
        $ds2 = DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR;
        $root = preg_replace(array('!\\\\+!', '!/+!', "!$ds2+!"),
                             array('/', '/', '/'),
                            $root);
        if ($root{0} != '/') {
            if (isset($options['windows'])) {
                if (!preg_match('/^[A-Za-z]:/', $root)) {
                    return PEAR::raiseError('Root directory must be an absolute path beginning ' .
                        'with "\\" or "C:\\", was: "' . $root . '"');
                }
            } else {
                return PEAR::raiseError('Root directory must be an absolute path beginning ' .
                    'with "/", was: "' . $root . '"');
            }
        }
        $windows = isset($options['windows']);
        if ($windows) {
            $root = str_replace('/', '\\', $root);
        }
        if (!file_exists($params[1])) {
            if (!@touch($params[1])) {
                return PEAR::raiseError('Could not create "' . $params[1] . '"');
            }
        }
        $params[1] = realpath($params[1]);
        $config = &new PEAR_Config($params[1], '#no#system#config#', false, false);
        if ($root{strlen($root) - 1} == '/') {
            $root = substr($root, 0, strlen($root) - 1);
        }
        $config->noRegistry();
        $config->set('php_dir', $windows ? "$root\\pear\\php" : "$root/pear/php", 'user');
        $config->set('data_dir', $windows ? "$root\\pear\\data" : "$root/pear/data");
        $config->set('ext_dir', $windows ? "$root\\pear\\ext" : "$root/pear/ext");
        $config->set('doc_dir', $windows ? "$root\\pear\\docs" : "$root/pear/docs");
        $config->set('test_dir', $windows ? "$root\\pear\\tests" : "$root/pear/tests");
        $config->set('cache_dir', $windows ? "$root\\pear\\cache" : "$root/pear/cache");
        $config->set('download_dir', $windows ? "$root\\pear\\download" : "$root/pear/download");
        $config->set('temp_dir', $windows ? "$root\\pear\\temp" : "$root/pear/temp");
        $config->set('bin_dir', $windows ? "$root\\pear" : "$root/pear");
        $config->writeConfigFile();
        $this->_showConfig($config);
        $this->ui->outputData('Successfully created default configuration file "' . $params[1] . '"',
            $command);
    }

    // }}}

    function _showConfig(&$config)
    {
        $params = array('user');
        $keys = $config->getKeys();
        sort($keys);
        $channel = 'pear.php.net';
        $data = array('caption' => 'Configuration (channel ' . $channel . '):');
        foreach ($keys as $key) {
            $type = $config->getType($key);
            $value = $config->get($key, 'user', $channel);
            if ($type == 'password' && $value) {
                $value = '********';
            }
            if ($value === false) {
                $value = 'false';
            } elseif ($value === true) {
                $value = 'true';
            }
            $data['data'][$config->getGroup($key)][] =
                array($config->getPrompt($key) , $key, $value);
        }
        foreach ($config->getLayers() as $layer) {
            $data['data']['Config Files'][] =
                array(ucfirst($layer) . ' Configuration File', 'Filename' ,
                    $config->getConfFile($layer));
        }

        $this->ui->outputData($data, 'config-show');
        return true;
    }
    // {{{ _checkLayer()

    /**
     * Checks if a layer is defined or not
     *
     * @param string $layer The layer to search for
     * @return mixed False on no error or the error message
     */
    function _checkLayer($layer = null)
    {
        if (!empty($layer) && $layer != 'default') {
            $layers = $this->config->getLayers();
            if (!in_array($layer, $layers)) {
                return " only the layers: \"" . implode('" or "', $layers) . "\" are supported";
            }
        }
        return false;
    }

    // }}}
}

?>