Subversion-Projekte lars-tiefland.php_share

<?php

/**

 * PEAR_REST_13

 *

 * PHP versions 4 and 5

 *

 * @category   pear

 * @package    PEAR

 * @author     Greg Beaver <cellog@php.net>

 * @copyright  1997-2009 The Authors

 * @license    http://opensource.org/licenses/bsd-license.php New BSD License

 * @version    CVS: $Id: 13.php 313023 2011-07-06 19:17:11Z dufuz $

 * @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';

require_once 'PEAR/REST/10.php';

/**

 * Implement REST 1.3

 *

 * @category   pear

 * @package    PEAR

 * @author     Greg Beaver <cellog@php.net>

 * @copyright  1997-2009 The Authors

 * @license    http://opensource.org/licenses/bsd-license.php New BSD License

 * @version    Release: 1.9.4

 * @link       http://pear.php.net/package/PEAR

 * @since      Class available since Release 1.4.0a12

 */

class PEAR_REST_13 extends PEAR_REST_10

{

    /**

     * Retrieve information about a remote package to be downloaded from a REST server

     *

     * This is smart enough to resolve the minimum PHP version dependency prior to download

     * @param string $base The uri to prepend to all REST calls

     * @param array $packageinfo an array of format:

     * <pre>

     *  array(

     *   'package' => 'packagename',

     *   'channel' => 'channelname',

     *  ['state' => 'alpha' (or valid state),]

     *  -or-

     *  ['version' => '1.whatever']

     * </pre>

     * @param string $prefstate Current preferred_state config variable value

     * @param bool $installed the installed version of this package to compare against

     * @return array|false|PEAR_Error see {@link _returnDownloadURL()}

     */

    function getDownloadURL($base, $packageinfo, $prefstate, $installed, $channel = false)

    {

        $states = $this->betterStates($prefstate, true);

        if (!$states) {

            return PEAR::raiseError('"' . $prefstate . '" is not a valid state');

        }

        $channel  = $packageinfo['channel'];

        $package  = $packageinfo['package'];

        $state    = isset($packageinfo['state'])   ? $packageinfo['state']   : null;

        $version  = isset($packageinfo['version']) ? $packageinfo['version'] : null;

        $restFile = $base . 'r/' . strtolower($package) . '/allreleases2.xml';

        $info = $this->_rest->retrieveData($restFile, false, false, $channel);

        if (PEAR::isError($info)) {

            return PEAR::raiseError('No releases available for package "' .

                $channel . '/' . $package . '"');

        }

        if (!isset($info['r'])) {

            return false;

        }

        $release = $found = false;

        if (!is_array($info['r']) || !isset($info['r'][0])) {

            $info['r'] = array($info['r']);

        }

        $skippedphp = false;

        foreach ($info['r'] as $release) {

            if (!isset($this->_rest->_options['force']) && ($installed &&

                  version_compare($release['v'], $installed, '<'))) {

                continue;

            }

            if (isset($state)) {

                // try our preferred state first

                if ($release['s'] == $state) {

                    if (!isset($version) && version_compare($release['m'], phpversion(), '>')) {

                        // skip releases that require a PHP version newer than our PHP version

                        $skippedphp = $release;

                        continue;

                    }

                    $found = true;

                    break;

                }

                // see if there is something newer and more stable

                // bug #7221

                if (in_array($release['s'], $this->betterStates($state), true)) {

                    if (!isset($version) && version_compare($release['m'], phpversion(), '>')) {

                        // skip releases that require a PHP version newer than our PHP version

                        $skippedphp = $release;

                        continue;

                    }

                    $found = true;

                    break;

                }

            } elseif (isset($version)) {

                if ($release['v'] == $version) {

                    if (!isset($this->_rest->_options['force']) &&

                          !isset($version) &&

                          version_compare($release['m'], phpversion(), '>')) {

                        // skip releases that require a PHP version newer than our PHP version

                        $skippedphp = $release;

                        continue;

                    }

                    $found = true;

                    break;

                }

            } else {

                if (in_array($release['s'], $states)) {

                    if (version_compare($release['m'], phpversion(), '>')) {

                        // skip releases that require a PHP version newer than our PHP version

                        $skippedphp = $release;

                        continue;

                    }

                    $found = true;

                    break;

                }

            }

        }

        if (!$found && $skippedphp) {

            $found = null;

        }

        return $this->_returnDownloadURL($base, $package, $release, $info, $found, $skippedphp, $channel);

    }

    function getDepDownloadURL($base, $xsdversion, $dependency, $deppackage,

                               $prefstate = 'stable', $installed = false, $channel = false)

    {

        $states = $this->betterStates($prefstate, true);

        if (!$states) {

            return PEAR::raiseError('"' . $prefstate . '" is not a valid state');

        }

        $channel  = $dependency['channel'];

        $package  = $dependency['name'];

        $state    = isset($dependency['state'])   ? $dependency['state']   : null;

        $version  = isset($dependency['version']) ? $dependency['version'] : null;

        $restFile = $base . 'r/' . strtolower($package) .'/allreleases2.xml';

        $info = $this->_rest->retrieveData($restFile, false, false, $channel);

        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']);

                }

            }

        }

        $skippedphp = $found = $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'])) {

                        if (version_compare($release['m'], phpversion(), '>')) {

                            // skip dependency releases that require a PHP version

                            // newer than our PHP version

                            $skippedphp = $release;

                            continue;

                        }

                        $recommended = $release['v'];

                        break;

                    }

                }

            }

            if ($recommended) {

                if ($release['v'] != $recommended) { // if we want a specific

                    // version, then skip all others

                    continue;

                }

                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, false, $channel);

                }

            }

            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...

                if (version_compare($release['m'], phpversion(), '>')) {

                    // skip dependency releases that require a PHP version

                    // newer than our PHP version

                    $skippedphp = $release;

                    continue;

                }

                $found = true; // ... then use it

                break;

            }

        }

        if (!$found && $skippedphp) {

            $found = null;

        }

        return $this->_returnDownloadURL($base, $package, $release, $info, $found, $skippedphp, $channel);

    }

}