config.php

ATutor是一个学习管理系统(LCMS/LMS), 为教师和学生建立一个网络教学平台。

<?php
/**
 * PEAR_Config, customized configuration handling for the PEAR Installer
 *
 * PHP versions 4 and 5
 *
 * LICENSE: This source file is subject to version 3.0 of the PHP license
 * that is available through the world-wide-web at the following URI:
 * http://www.php.net/license/3_0.txt.  If you did not receive a copy of
 * the PHP License and are unable to obtain it through the web, please
 * send a note to [e-mail] so we can mail you a copy immediately.
 *
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <[e-mail]>
 * @author     Greg Beaver <[e-mail]>
 * @copyright  1997-2005 The PHP Group
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
 * @version    CVS: $Id: Config.php 5616 2005-11-07 18:47:30Z joel $
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 0.1
 */

/**
 * Required for error handling
 */
require_once 'PEAR.php';
require_once 'PEAR/Registry.php';
require_once 'PEAR/Installer/Role.php';
require_once 'System.php';
require_once 'PEAR/Remote.php';

/**
 * Last created PEAR_Config instance.
 * @var object
 */
$GLOBALS['_PEAR_Config_instance'] = null;
if (!defined('PEAR_INSTALL_DIR') || !PEAR_INSTALL_DIR) {
    $PEAR_INSTALL_DIR = PHP_LIBDIR . DIRECTORY_SEPARATOR . 'pear';
} else {
    $PEAR_INSTALL_DIR = PEAR_INSTALL_DIR;
}

// Below we define constants with default values for all configuration
// parameters except username/password.  All of them can have their
// defaults set through environment variables.  The reason we use the
// PHP_ prefix is for some security, PHP protects environment
// variables starting with PHP_*.

// default channel and preferred mirror is based on whether we are invoked through
// the "pear" or the "pecl" command

if (!defined('PEAR_RUNTYPE') || PEAR_RUNTYPE == 'pear') {
    define('PEAR_CONFIG_DEFAULT_CHANNEL', 'pear.php.net');
} else {
    define('PEAR_CONFIG_DEFAULT_CHANNEL', 'pecl.php.net');
}

if (getenv('PHP_PEAR_SYSCONF_DIR')) {
    define('PEAR_CONFIG_SYSCONFDIR', getenv('PHP_PEAR_SYSCONF_DIR'));
} elseif (getenv('SystemRoot')) {
    define('PEAR_CONFIG_SYSCONFDIR', getenv('SystemRoot'));
} else {
    define('PEAR_CONFIG_SYSCONFDIR', PHP_SYSCONFDIR);
}

// Default for master_server
if (getenv('PHP_PEAR_MASTER_SERVER')) {
    define('PEAR_CONFIG_DEFAULT_MASTER_SERVER', getenv('PHP_PEAR_MASTER_SERVER'));
} else {
    define('PEAR_CONFIG_DEFAULT_MASTER_SERVER', 'pear.php.net');
}

// Default for http_proxy
if (getenv('PHP_PEAR_HTTP_PROXY')) {
    define('PEAR_CONFIG_DEFAULT_HTTP_PROXY', getenv('PHP_PEAR_HTTP_PROXY'));
} elseif (getenv('http_proxy')) {
    define('PEAR_CONFIG_DEFAULT_HTTP_PROXY', getenv('http_proxy'));
} else {
    define('PEAR_CONFIG_DEFAULT_HTTP_PROXY', '');
}

// Default for php_dir
if (getenv('PHP_PEAR_INSTALL_DIR')) {
    define('PEAR_CONFIG_DEFAULT_PHP_DIR', getenv('PHP_PEAR_INSTALL_DIR'));
} else {
    if (@is_dir($PEAR_INSTALL_DIR)) {
        define('PEAR_CONFIG_DEFAULT_PHP_DIR',
               $PEAR_INSTALL_DIR);
    } else {
        define('PEAR_CONFIG_DEFAULT_PHP_DIR', $PEAR_INSTALL_DIR);
    }
}

// Default for ext_dir
if (getenv('PHP_PEAR_EXTENSION_DIR')) {
    define('PEAR_CONFIG_DEFAULT_EXT_DIR', getenv('PHP_PEAR_EXTENSION_DIR'));
} else {
    if (ini_get('extension_dir')) {
        define('PEAR_CONFIG_DEFAULT_EXT_DIR', ini_get('extension_dir'));
    } elseif (defined('PEAR_EXTENSION_DIR') && @is_dir(PEAR_EXTENSION_DIR)) {
        define('PEAR_CONFIG_DEFAULT_EXT_DIR', PEAR_EXTENSION_DIR);
    } elseif (defined('PHP_EXTENSION_DIR')) {
        define('PEAR_CONFIG_DEFAULT_EXT_DIR', PHP_EXTENSION_DIR);
    } else {
        define('PEAR_CONFIG_DEFAULT_EXT_DIR', '.');
    }
}

// Default for doc_dir
if (getenv('PHP_PEAR_DOC_DIR')) {
    define('PEAR_CONFIG_DEFAULT_DOC_DIR', getenv('PHP_PEAR_DOC_DIR'));
} else {
    define('PEAR_CONFIG_DEFAULT_DOC_DIR',
           $PEAR_INSTALL_DIR.DIRECTORY_SEPARATOR.'docs');
}

// Default for bin_dir
if (getenv('PHP_PEAR_BIN_DIR')) {
    define('PEAR_CONFIG_DEFAULT_BIN_DIR', getenv('PHP_PEAR_BIN_DIR'));
} else {
    define('PEAR_CONFIG_DEFAULT_BIN_DIR', PHP_BINDIR);
}

// Default for data_dir
if (getenv('PHP_PEAR_DATA_DIR')) {
    define('PEAR_CONFIG_DEFAULT_DATA_DIR', getenv('PHP_PEAR_DATA_DIR'));
} else {
    define('PEAR_CONFIG_DEFAULT_DATA_DIR',
           $PEAR_INSTALL_DIR.DIRECTORY_SEPARATOR.'data');
}

// Default for test_dir
if (getenv('PHP_PEAR_TEST_DIR')) {
    define('PEAR_CONFIG_DEFAULT_TEST_DIR', getenv('PHP_PEAR_TEST_DIR'));
} else {
    define('PEAR_CONFIG_DEFAULT_TEST_DIR',
           $PEAR_INSTALL_DIR.DIRECTORY_SEPARATOR.'tests');
}

// Default for cache_dir
if (getenv('PHP_PEAR_CACHE_DIR')) {
    define('PEAR_CONFIG_DEFAULT_CACHE_DIR', getenv('PHP_PEAR_CACHE_DIR'));
} else {
    define('PEAR_CONFIG_DEFAULT_CACHE_DIR',
           System::tmpdir() . DIRECTORY_SEPARATOR . 'pear' .
           DIRECTORY_SEPARATOR . 'cache');
}

// Default for php_bin
if (getenv('PHP_PEAR_PHP_BIN')) {
    define('PEAR_CONFIG_DEFAULT_PHP_BIN', getenv('PHP_PEAR_PHP_BIN'));
} else {
    define('PEAR_CONFIG_DEFAULT_PHP_BIN', PEAR_CONFIG_DEFAULT_BIN_DIR.
           DIRECTORY_SEPARATOR.'php'.(OS_WINDOWS ? '.exe' : ''));
}

// Default for verbose
if (getenv('PHP_PEAR_VERBOSE')) {
    define('PEAR_CONFIG_DEFAULT_VERBOSE', getenv('PHP_PEAR_VERBOSE'));
} else {
    define('PEAR_CONFIG_DEFAULT_VERBOSE', 1);
}

// Default for preferred_state
if (getenv('PHP_PEAR_PREFERRED_STATE')) {
    define('PEAR_CONFIG_DEFAULT_PREFERRED_STATE', getenv('PHP_PEAR_PREFERRED_STATE'));
} else {
    define('PEAR_CONFIG_DEFAULT_PREFERRED_STATE', 'stable');
}

// Default for umask
if (getenv('PHP_PEAR_UMASK')) {
    define('PEAR_CONFIG_DEFAULT_UMASK', getenv('PHP_PEAR_UMASK'));
} else {
    define('PEAR_CONFIG_DEFAULT_UMASK', decoct(umask()));
}

// Default for cache_ttl
if (getenv('PHP_PEAR_CACHE_TTL')) {
    define('PEAR_CONFIG_DEFAULT_CACHE_TTL', getenv('PHP_PEAR_CACHE_TTL'));
} else {
    define('PEAR_CONFIG_DEFAULT_CACHE_TTL', 3600);
}

// Default for sig_type
if (getenv('PHP_PEAR_SIG_TYPE')) {
    define('PEAR_CONFIG_DEFAULT_SIG_TYPE', getenv('PHP_PEAR_SIG_TYPE'));
} else {
    define('PEAR_CONFIG_DEFAULT_SIG_TYPE', 'gpg');
}

// Default for sig_bin
if (getenv('PHP_PEAR_SIG_BIN')) {
    define('PEAR_CONFIG_DEFAULT_SIG_BIN', getenv('PHP_PEAR_SIG_BIN'));
} else {
    define('PEAR_CONFIG_DEFAULT_SIG_BIN',
           System::which(
               'gpg', OS_WINDOWS ? 'c:\gnupg\gpg.exe' : '/usr/local/bin/gpg'));
}

// Default for sig_keydir
if (getenv('PHP_PEAR_SIG_KEYDIR')) {
    define('PEAR_CONFIG_DEFAULT_SIG_KEYDIR', getenv('PHP_PEAR_SIG_KEYDIR'));
} else {
    define('PEAR_CONFIG_DEFAULT_SIG_KEYDIR',
           PEAR_CONFIG_SYSCONFDIR . DIRECTORY_SEPARATOR . 'pearkeys');
}

/**
 * This is a class for storing configuration data, keeping track of
 * which are system-defined, user-defined or defaulted.
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <[e-mail]>
 * @author     Greg Beaver <[e-mail]>
 * @copyright  1997-2005 The PHP Group
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
 * @version    Release: 1.4.4
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 0.1
 */
class PEAR_Config extends PEAR
{
    // {{{ properties

    /**
     * Array of config files used.
     *
     * @var array layer => config file
     */
    var $files = array(
        'system' => '',
        'user' => '',
        );

    var $layers = array();
    
    /**
     * Configuration data, two-dimensional array where the first
     * dimension is the config layer ('user', 'system' and 'default'),
     * and the second dimension is keyname => value.
     *
     * The order in the first dimension is important!  Earlier
     * layers will shadow later ones when a config value is
     * requested (if a 'user' value exists, it will be returned first,
     * then 'system' and finally 'default').
     *
     * @var array layer => array(keyname => value, ...)
     */
    var $configuration = array(
        'user' => array(),
        'system' => array(),
        'default' => array(),
        );
    
    /**
     * Configuration values that can be set for a channel
     *
     * All other configuration values can only have a global value
     * @var array
     * @access private
     */
    var $_channelConfigInfo = array(
        'php_dir', 'ext_dir', 'doc_dir', 'bin_dir', 'data_dir',
        'test_dir', 'php_bin', 'username', 'password', 'verbose',
        'preferred_state', 'umask', 'preferred_mirror',
        );

    /**
     * Channels that can be accessed
     * @see setChannels()
     * @var array
     * @access private
     */
    var $_channels = array('pear.php.net', 'pecl.php.net', '__uri');

    /**
     * This variable is used to control the directory values returned
     * @see setInstallRoot();
     * @var string|false
     * @access private
     */
    var $_installRoot = false;

    /**
     * If requested, this will always refer to the registry
     * contained in php_dir
     * @var PEAR_Registry
     */
    var $_registry = array();

    /**
     * @var array
     * @access private
     */
    var $_regInitialized = array();

    /**
     * @var bool
     * @access private
     */
    var $_noRegistry = false;

    /**
     * amount of errors found while parsing config
     * @var integer
     * @access private
     */
    var $_errorsFound = 0;
    var $_lastError = null;

    /**
     * Information about the configuration data.  Stores the type,
     * default value and a documentation string for each configuration
     * value.
     *
     * @var array layer => array(infotype => value, ...)
     */
    var $configuration_info = array(
        // Channels/Internet Access
        'default_channel' => array(
            'type' => 'string',
            'default' => PEAR_CONFIG_DEFAULT_CHANNEL,
            'doc' => 'the default channel to use for all non explicit commands',
            'prompt' => 'Default Channel',
            'group' => 'Internet Access',
            ),
        'preferred_mirror' => array(
            'type' => 'string',
            'default' => PEAR_CONFIG_DEFAULT_CHANNEL,
            'doc' => 'the default server or mirror to use for channel actions',
            'prompt' => 'Default Channel Mirror',
            'group' => 'Internet Access',
            ),
        'remote_config' => array(
            'type' => 'password',
            'default' => '',
            'doc' => 'ftp url of remote configuration file to use for synchronized install',
            'prompt' => 'Remote Configuration File',
            'group' => 'Internet Access',
            ),
        'auto_discover' => array(
            'type' => 'integer',
            'default' => 0,
            'doc' => 'whether to automatically discover new channels',
            'prompt' => 'Auto-discover new Channels',
            'group' => 'Internet Access',
            ),
        // Internet Access
        'master_server' => array(
            'type' => 'string',
            'default' => 'pear.php.net',
            'doc' => 'name of the main PEAR server [NOT USED IN THIS VERSION]',
            'prompt' => 'PEAR server [DEPRECATED]',
            'group' => 'Internet Access',
            ),
        'http_proxy' => array(
            'type' => 'string',
            'default' => PEAR_CONFIG_DEFAULT_HTTP_PROXY,
            'doc' => 'HTTP proxy (host:port) to use when downloading packages',
            'prompt' => 'HTTP Proxy Server Address',
            'group' => 'Internet Access',
            ),
        // File Locations
        'php_dir' => array(
            'type' => 'directory',
            'default' => PEAR_CONFIG_DEFAULT_PHP_DIR,
            'doc' => 'directory where .php files are installed',
            'prompt' => 'PEAR directory',
            'group' => 'File Locations',
            ),
        'ext_dir' => array(
            'type' => 'directory',
            'default' => PEAR_CONFIG_DEFAULT_EXT_DIR,
            'doc' => 'directory where loadable extensions are installed',
            'prompt' => 'PHP extension directory',
            'group' => 'File Locations',
            ),
        'doc_dir' => array(
            'type' => 'directory',
            'default' => PEAR_CONFIG_DEFAULT_DOC_DIR,
            'doc' => 'directory where documentation is installed',
            'prompt' => 'PEAR documentation directory',
            'group' => 'File Locations',
            ),
        'bin_dir' => array(
            'type' => 'directory',