10.php

php-4.4.7学习linux时下载的源代码

<?php
/**
 * PEAR_REST_10
 *
 * 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: 10.php,v 1.1.2.2 2006/05/22 10:19:34 cellog Exp $
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a12
 */

/**
 * For downloading REST xml/txt files
 */
require_once 'PEAR/REST.php';

/**
 * Implement REST 1.0
 *
 * @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: @package_version@
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 1.4.0a12
 */
class PEAR_REST_10
{
    /**
     * @var PEAR_REST
     */
    var $_rest;
    function PEAR_REST_10($config, $options = array())
    {
        $this->_rest = &new PEAR_REST($config, $options);
    }

    function getDownloadURL($base, $packageinfo, $prefstate, $installed)
    {
        $channel = $packageinfo['channel'];
        $package = $packageinfo['package'];
        $states = $this->betterStates($prefstate, true);
        if (!$states) {
            return PEAR::raiseError('"' . $prefstate . '" is not a valid state');
        }
        $state = $version = null;
        if (isset($packageinfo['state'])) {
            $state = $packageinfo['state'];
        }
        if (isset($packageinfo['version'])) {
            $version = $packageinfo['version'];
        }
        $info = $this->_rest->retrieveData($base . 'r/' . strtolower($package) . '/allreleases.xml');
        if (PEAR::isError($info)) {
            return PEAR::raiseError('No releases available for package "' .
                $channel . '/' . $package . '"');
        }
        if (!isset($info['r'])) {
            return false;
        }
        $found = false;
        $release = false;
        if (!is_array($info['r']) || !isset($info['r'][0])) {
            $info['r'] = array($info['r']);
        }
        foreach ($info['r'] as $release) {
            if (!isset($this->_rest->_options['force']) && ($installed &&
                  version_compare($release['v'], $installed, '<'))) {
                continue;
            }
            if (isset($state)) {
                if ($release['s'] == $state) {
                    $found = true;
                    break;
                }
            } elseif (isset($version)) {
                if ($release['v'] == $version) {
                    $found = true;
                    break;
                }
            } else {
                if (in_array($release['s'], $states)) {
                    $found = true;
                    break;
                }
            }
        }
        return $this->_returnDownloadURL($base, $package, $release, $info, $found);
    }

    function getDepDownloadURL($base, $xsdversion, $dependency, $deppackage,
                               $prefstate = 'stable', $installed = false)
    {
        $channel = $dependency['channel'];
        $package = $dependency['name'];
        $states = $this->betterStates($prefstate, true);
        if (!$states) {
            return PEAR::raiseError('"' . $prefstate . '" is not a valid state');
        }
        $state = $version = null;
        if (isset($packageinfo['state'])) {
            $state = $packageinfo['state'];
        }
        if (isset($packageinfo['version'])) {
            $version = $packageinfo['version'];
        }
        $info = $this->_rest->retrieveData($base . 'r/' . strtolower($package) . '/allreleases.xml');
        if (PEAR::isError($info)) {
            return PEAR::raiseError('Package "' . $deppackage['channel'] . '/' . $deppackage['package']
                . '" dependency "' . $channel . '/' . $package . '" has no releases');
        }
        if (!is_array($info) || !isset($info['r'])) {
            return false;
        }
        $exclude = array();
        $min = $max = $recommended = false;
        if ($xsdversion == '1.0') {
            $pinfo['package'] = $dependency['name'];
            $pinfo['channel'] = 'pear.php.net'; // this is always true - don't change this
            switch ($dependency['rel']) {
                case 'ge' :
                    $min = $dependency['version'];
                break;
                case 'gt' :
                    $min = $dependency['version'];
                    $exclude = array($dependency['version']);
                break;
                case 'eq' :
                    $recommended = $dependency['version'];
                break;
                case 'lt' :
                    $max = $dependency['version'];
                    $exclude = array($dependency['version']);
                break;
                case 'le' :
                    $max = $dependency['version'];
                break;
                case 'ne' :
                    $exclude = array($dependency['version']);
                break;
            }
        } else {
            $pinfo['package'] = $dependency['name'];
            $min = isset($dependency['min']) ? $dependency['min'] : false;
            $max = isset($dependency['max']) ? $dependency['max'] : false;
            $recommended = isset($dependency['recommended']) ?
                $dependency['recommended'] : false;
            if (isset($dependency['exclude'])) {
                if (!isset($dependency['exclude'][0])) {
                    $exclude = array($dependency['exclude']);
                }
            }
        }
        $found = false;
        $release = false;
        if (!is_array($info['r']) || !isset($info['r'][0])) {
            $info['r'] = array($info['r']);
        }
        foreach ($info['r'] as $release) {
            if (!isset($this->_rest->_options['force']) && ($installed &&
                  version_compare($release['v'], $installed, '<'))) {
                continue;
            }
            if (in_array($release['v'], $exclude)) { // skip excluded versions
                continue;
            }
            // allow newer releases to say "I'm OK with the dependent package"
            if ($xsdversion == '2.0' && isset($release['co'])) {
                if (!is_array($release['co']) || !isset($release['co'][0])) {
                    $release['co'] = array($release['co']);
                }
                foreach ($release['co'] as $entry) {
                    if (isset($entry['x']) && !is_array($entry['x'])) {
                        $entry['x'] = array($entry['x']);
                    } elseif (!isset($entry['x'])) {
                        $entry['x'] = array();
                    }
                    if ($entry['c'] == $deppackage['channel'] &&
                          strtolower($entry['p']) == strtolower($deppackage['package']) &&
                          version_compare($deppackage['version'], $entry['min'], '>=') &&
                          version_compare($deppackage['version'], $entry['max'], '<=') &&
                          !in_array($release['v'], $entry['x'])) {
                        $recommended = $release['v'];
                        break;
                    }
                }
            }
            if ($recommended) {
                if ($release['v'] != $recommended) { // if we want a specific
                    // version, then skip all others
                    continue;
                } else {
                    if (!in_array($release['s'], $states)) {
                        // the stability is too low, but we must return the
                        // recommended version if possible
                        return $this->_returnDownloadURL($base, $package, $release, $info, true);
                    }
                }
            }
            if ($min && version_compare($release['v'], $min, 'lt')) { // skip too old versions
                continue;
            }
            if ($max && version_compare($release['v'], $max, 'gt')) { // skip too new versions
                continue;
            }
            if ($installed && version_compare($release['v'], $installed, '<')) {
                continue;
            }
            if (in_array($release['s'], $states)) { // if in the preferred state...
                $found = true; // ... then use it
                break;
            }
        }
        return $this->_returnDownloadURL($base, $package, $release, $info, $found);
    }

    function _returnDownloadURL($base, $package, $release, $info, $found)
    {
        if (!$found) {
            $release = $info['r'][0];
        }
        $releaseinfo = $this->_rest->retrieveCacheFirst($base . 'r/' . strtolower($package) . '/' . 
            $release['v'] . '.xml');
        if (PEAR::isError($releaseinfo)) {
            return PEAR::raiseError('Package "' . $package . '" Version "' . $release['v'] .
                '" does not have REST xml available');
        }
        $packagexml = $this->_rest->retrieveCacheFirst($base . 'r/' . strtolower($package) . '/' .
            'deps.' . $release['v'] . '.txt', false, true);
        if (PEAR::isError($packagexml)) {
            return PEAR::raiseError('Package "' . $package . '" Version "' . $release['v'] .
                '" does not have REST dependency information available');
        }
        $packagexml = unserialize($packagexml);
        if (!$packagexml) {
            $packagexml = array();
        }
        $allinfo = $this->_rest->retrieveData($base . 'r/' . strtolower($package) .
            '/allreleases.xml');
        if (!is_array($allinfo['r']) || !isset($allinfo['r'][0])) {
            $allinfo['r'] = array($allinfo['r']);
        }
        $compatible = false;
        foreach ($allinfo['r'] as $release) {
            if ($release['v'] != $releaseinfo['v']) {
                continue;
            }
            if (!isset($release['co'])) {
                break;
            }
            $compatible = array();
            if (!is_array($release['co']) || !isset($release['co'][0])) {
                $release['co'] = array($release['co']);
            }
            foreach ($release['co'] as $entry) {
                $comp = array();
                $comp['name'] = $entry['p'];
                $comp['channel'] = $entry['c'];
                $comp['min'] = $entry['min'];
                $comp['max'] = $entry['max'];
                if (isset($entry['x']) && !is_array($entry['x'])) {
                    $comp['exclude'] = $entry['x'];
                }
                $compatible[] = $comp;
            }
            if (count($compatible) == 1) {
                $compatible = $compatible[0];
            }
            break;
        }
        if ($found) {
            return 
                array('version' => $releaseinfo['v'],
                      'info' => $packagexml,
                      'package' => $releaseinfo['p']['_content'],
                      'stability' => $releaseinfo['st'],
                      'url' => $releaseinfo['g'],
                      'compatible' => $compatible);
        } else {
            return
                array('version' => $releaseinfo['v'],
                      'package' => $releaseinfo['p']['_content'],
                      'stability' => $releaseinfo['st'],
                      'info' => $packagexml,
                      'compatible' => $compatible);
        }
    }

    function listPackages($base)
    {
        $packagelist = $this->_rest->retrieveData($base . 'p/packages.xml');
        if (PEAR::isError($packagelist)) {
            return $packagelist;
        }
        if (!is_array($packagelist) || !isset($packagelist['p'])) {
            return array();
        }
        if (!is_array($packagelist['p'])) {
            $packagelist['p'] = array($packagelist['p']);