dependency2.php

php-4.4.7学习linux时下载的源代码

<?php
/**
 * PEAR_Dependency2, advanced dependency validation
 *
 * 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     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: Dependency2.php,v 1.1.2.4 2006/05/22 10:19:33 cellog Exp $
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a1
 */

/**
 * Required for the PEAR_VALIDATE_* constants
 */
require_once 'PEAR/Validate.php';

/**
 * Dependency check for PEAR packages
 *
 * This class handles both version 1.0 and 2.0 dependencies
 * WARNING: *any* changes to this class must be duplicated in the
 * test_PEAR_Dependency2 class found in tests/PEAR_Dependency2/setup.php.inc,
 * or unit tests will not actually validate the changes
 * @category   pear
 * @package    PEAR
 * @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: @PEAR-VER@
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 1.4.0a1
 */
class PEAR_Dependency2
{
    /**
     * One of the PEAR_VALIDATE_* states
     * @see PEAR_VALIDATE_NORMAL
     * @var integer
     */
    var $_state;
    /**
     * Command-line options to install/upgrade/uninstall commands
     * @param array
     */
    var $_options;
    /**
     * @var OS_Guess
     */
    var $_os;
    /**
     * @var PEAR_Registry
     */
    var $_registry;
    /**
     * @var PEAR_Config
     */
    var $_config;
    /**
     * @var PEAR_DependencyDB
     */
    var $_dependencydb;
    /**
     * Output of PEAR_Registry::parsedPackageName()
     * @var array
     */
    var $_currentPackage;
    /**
     * @param PEAR_Config
     * @param array installation options
     * @param array format of PEAR_Registry::parsedPackageName()
     * @param int installation state (one of PEAR_VALIDATE_*)
     */
    function PEAR_Dependency2(&$config, $installoptions, $package,
                              $state = PEAR_VALIDATE_INSTALLING)
    {
        $this->_config = &$config;
        if (!class_exists('PEAR_DependencyDB')) {
            require_once 'PEAR/DependencyDB.php';
        }
        if (isset($installoptions['packagingroot'])) {
            // make sure depdb is in the right location
            $config->setInstallRoot($installoptions['packagingroot']);
        }
        $this->_registry = &$config->getRegistry();
        $this->_dependencydb = &PEAR_DependencyDB::singleton($config);
        if (isset($installoptions['packagingroot'])) {
            $config->setInstallRoot(false);
        }
        $this->_options = $installoptions;
        $this->_state = $state;
        if (!class_exists('OS_Guess')) {
            require_once 'OS/Guess.php';
        }
        $this->_os = new OS_Guess;
        $this->_currentPackage = $package;
    }

    function _getExtraString($dep)
    {
        $extra = ' (';
        if (isset($dep['uri'])) {
            return '';
        }
        if (isset($dep['recommended'])) {
            $extra .= 'recommended version ' . $dep['recommended'];
        } else {
            if (isset($dep['min'])) {
                $extra .= 'version >= ' . $dep['min'];
            }
            if (isset($dep['max'])) {
                if ($extra != ' (') {
                    $extra .= ', ';
                }
                $extra .= 'version <= ' . $dep['max'];
            }
            if (isset($dep['exclude'])) {
                if (!is_array($dep['exclude'])) {
                    $dep['exclude'] = array($dep['exclude']);
                }
                if ($extra != ' (') {
                    $extra .= ', ';
                }
                $extra .= 'excluded versions: ';
                foreach ($dep['exclude'] as $i => $exclude) {
                    if ($i) {
                        $extra .= ', ';
                    }
                    $extra .= $exclude;
                }
            }
        }
        $extra .= ')';
        if ($extra == ' ()') {
            $extra = '';
        }
        return $extra;
    }

    /**
     * This makes unit-testing a heck of a lot easier
     */
    function getPHP_OS()
    {
        return PHP_OS;
    }

    /**
     * This makes unit-testing a heck of a lot easier
     */
    function getsysname()
    {
        return $this->_os->getSysname();
    }

    /**
     * Specify a dependency on an OS.  Use arch for detailed os/processor information
     *
     * There are two generic OS dependencies that will be the most common, unix and windows.
     * Other options are linux, freebsd, darwin (OS X), sunos, irix, hpux, aix
     */
    function validateOsDependency($dep)
    {
        if ($this->_state != PEAR_VALIDATE_INSTALLING &&
              $this->_state != PEAR_VALIDATE_DOWNLOADING) {
            return true;
        }
        if (isset($dep['conflicts'])) {
            $not = true;
        } else {
            $not = false;
        }
        if ($dep['name'] == '*') {
            return true;
        }
        switch (strtolower($dep['name'])) {
            case 'windows' :
                if ($not) {
                    if (strtolower(substr($this->getPHP_OS(), 0, 3)) == 'win') {
                        if (!isset($this->_options['nodeps']) &&
                              !isset($this->_options['force'])) {
                            return $this->raiseError("Cannot install %s on Windows");
                        } else {
                            return $this->warning("warning: Cannot install %s on Windows");
                        }
                    }
                } else {
                    if (strtolower(substr($this->getPHP_OS(), 0, 3)) != 'win') {
                        if (!isset($this->_options['nodeps']) &&
                              !isset($this->_options['force'])) {
                            return $this->raiseError("Can only install %s on Windows");
                        } else {
                            return $this->warning("warning: Can only install %s on Windows");
                        }
                    }
                }
            break;
            case 'unix' :
                $unices = array('linux', 'freebsd', 'darwin', 'sunos', 'irix', 'hpux', 'aix');
                if ($not) {
                    if (in_array($this->getSysname(), $unices)) {
                        if (!isset($this->_options['nodeps']) &&
                              !isset($this->_options['force'])) {
                            return $this->raiseError("Cannot install %s on any Unix system");
                        } else {
                            return $this->warning(
                                "warning: Cannot install %s on any Unix system");
                        }
                    }
                } else {
                    if (!in_array($this->getSysname(), $unices)) {
                        if (!isset($this->_options['nodeps']) &&
                              !isset($this->_options['force'])) {
                            return $this->raiseError("Can only install %s on a Unix system");
                        } else {
                            return $this->warning(
                                "warning: Can only install %s on a Unix system");
                        }
                    }
                }
            break;
            default :
                if ($not) {
                    if (strtolower($dep['name']) == strtolower($this->getSysname())) {
                        if (!isset($this->_options['nodeps']) &&
                              !isset($this->_options['force'])) {
                            return $this->raiseError('Cannot install %s on ' . $dep['name'] .
                                ' operating system');
                        } else {
                            return $this->warning('warning: Cannot install %s on ' .
                                $dep['name'] . ' operating system');
                        }
                    }
                } else {
                    if (strtolower($dep['name']) != strtolower($this->getSysname())) {
                        if (!isset($this->_options['nodeps']) &&
                              !isset($this->_options['force'])) {
                            return $this->raiseError('Cannot install %s on ' .
                                $this->getSysname() .
                                ' operating system, can only install on ' . $dep['name']);
                        } else {
                            return $this->warning('warning: Cannot install %s on ' .
                                $this->getSysname() .
                                ' operating system, can only install on ' . $dep['name']);
                        }
                    }
                }
        }
        return true;
    }

    /**
     * This makes unit-testing a heck of a lot easier
     */
    function matchSignature($pattern)
    {
        return $this->_os->matchSignature($pattern);
    }

    /**
     * Specify a complex dependency on an OS/processor/kernel version,
     * Use OS for simple operating system dependency.
     *
     * This is the only dependency that accepts an eregable pattern.  The pattern
     * will be matched against the php_uname() output parsed by OS_Guess
     */
    function validateArchDependency($dep)
    {
        if ($this->_state != PEAR_VALIDATE_INSTALLING) {
            return true;
        }
        if (isset($dep['conflicts'])) {
            $not = true;
        } else {
            $not = false;
        }
        if (!$this->matchSignature($dep['pattern'])) {
            if (!$not) {
                if (!isset($this->_options['nodeps']) && !isset($this->_options['force'])) {
                    return $this->raiseError('%s Architecture dependency failed, does not ' .
                        'match "' . $dep['pattern'] . '"');
                } else {
                    return $this->warning('warning: %s Architecture dependency failed, does ' .
                        'not match "' . $dep['pattern'] . '"');
                }
            }
            return true;
        } else {
            if ($not) {
                if (!isset($this->_options['nodeps']) && !isset($this->_options['force'])) {
                    return $this->raiseError('%s Architecture dependency failed, required "' .