X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/timetracker.git/blobdiff_plain/098a79f0819ebb89b7d48df4a6b154af4560f68e..9a23a8c0a51b7ec38a96f525484134f3cb85dc7e:/WEB-INF/lib/pear/PEAR/Command/Remote.php

diff --git a/WEB-INF/lib/pear/PEAR/Command/Remote.php b/WEB-INF/lib/pear/PEAR/Command/Remote.php
new file mode 100644
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+++ b/WEB-INF/lib/pear/PEAR/Command/Remote.php
@@ -0,0 +1,810 @@
+<?php
+/**
+ * PEAR_Command_Remote (remote-info, list-upgrades, remote-list, search, list-all, download,
+ * clear-cache commands)
+ *
+ * PHP versions 4 and 5
+ *
+ * @category   pear
+ * @package    PEAR
+ * @author     Stig Bakken <ssb@php.net>
+ * @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: Remote.php 313023 2011-07-06 19:17:11Z dufuz $
+ * @link       http://pear.php.net/package/PEAR
+ * @since      File available since Release 0.1
+ */
+
+/**
+ * base class
+ */
+require_once 'PEAR/Command/Common.php';
+require_once 'PEAR/REST.php';
+
+/**
+ * PEAR commands for remote server querying
+ *
+ * @category   pear
+ * @package    PEAR
+ * @author     Stig Bakken <ssb@php.net>
+ * @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 0.1
+ */
+class PEAR_Command_Remote extends PEAR_Command_Common
+{
+    var $commands = array(
+        'remote-info' => array(
+            'summary' => 'Information About Remote Packages',
+            'function' => 'doRemoteInfo',
+            'shortcut' => 'ri',
+            'options' => array(),
+            'doc' => '<package>
+Get details on a package from the server.',
+            ),
+        'list-upgrades' => array(
+            'summary' => 'List Available Upgrades',
+            'function' => 'doListUpgrades',
+            'shortcut' => 'lu',
+            'options' => array(
+                'channelinfo' => array(
+                    'shortopt' => 'i',
+                    'doc' => 'output fully channel-aware data, even on failure',
+                    ),
+            ),
+            'doc' => '[preferred_state]
+List releases on the server of packages you have installed where
+a newer version is available with the same release state (stable etc.)
+or the state passed as the second parameter.'
+            ),
+        'remote-list' => array(
+            'summary' => 'List Remote Packages',
+            'function' => 'doRemoteList',
+            'shortcut' => 'rl',
+            'options' => array(
+                'channel' =>
+                    array(
+                    'shortopt' => 'c',
+                    'doc' => 'specify a channel other than the default channel',
+                    'arg' => 'CHAN',
+                    )
+                ),
+            'doc' => '
+Lists the packages available on the configured server along with the
+latest stable release of each package.',
+            ),
+        'search' => array(
+            'summary' => 'Search remote package database',
+            'function' => 'doSearch',
+            'shortcut' => 'sp',
+            'options' => array(
+                'channel' =>
+                    array(
+                    'shortopt' => 'c',
+                    'doc' => 'specify a channel other than the default channel',
+                    'arg' => 'CHAN',
+                    ),
+                'allchannels' => array(
+                    'shortopt' => 'a',
+                    'doc' => 'search packages from all known channels',
+                    ),
+                'channelinfo' => array(
+                    'shortopt' => 'i',
+                    'doc' => 'output fully channel-aware data, even on failure',
+                    ),
+                ),
+            'doc' => '[packagename] [packageinfo]
+Lists all packages which match the search parameters.  The first
+parameter is a fragment of a packagename.  The default channel
+will be used unless explicitly overridden.  The second parameter
+will be used to match any portion of the summary/description',
+            ),
+        'list-all' => array(
+            'summary' => 'List All Packages',
+            'function' => 'doListAll',
+            'shortcut' => 'la',
+            'options' => array(
+                'channel' =>
+                    array(
+                    'shortopt' => 'c',
+                    'doc' => 'specify a channel other than the default channel',
+                    'arg' => 'CHAN',
+                    ),
+                'channelinfo' => array(
+                    'shortopt' => 'i',
+                    'doc' => 'output fully channel-aware data, even on failure',
+                    ),
+                ),
+            'doc' => '
+Lists the packages available on the configured server along with the
+latest stable release of each package.',
+            ),
+        'download' => array(
+            'summary' => 'Download Package',
+            'function' => 'doDownload',
+            'shortcut' => 'd',
+            'options' => array(
+                'nocompress' => array(
+                    'shortopt' => 'Z',
+                    'doc' => 'download an uncompressed (.tar) file',
+                    ),
+                ),
+            'doc' => '<package>...
+Download package tarballs.  The files will be named as suggested by the
+server, for example if you download the DB package and the latest stable
+version of DB is 1.6.5, the downloaded file will be DB-1.6.5.tgz.',
+            ),
+        'clear-cache' => array(
+            'summary' => 'Clear Web Services Cache',
+            'function' => 'doClearCache',
+            'shortcut' => 'cc',
+            'options' => array(),
+            'doc' => '
+Clear the REST cache. See also the cache_ttl configuration
+parameter.
+',
+            ),
+        );
+
+    /**
+     * PEAR_Command_Remote constructor.
+     *
+     * @access public
+     */
+    function PEAR_Command_Remote(&$ui, &$config)
+    {
+        parent::PEAR_Command_Common($ui, $config);
+    }
+
+    function _checkChannelForStatus($channel, $chan)
+    {
+        if (PEAR::isError($chan)) {
+            $this->raiseError($chan);
+        }
+        if (!is_a($chan, 'PEAR_ChannelFile')) {
+            return $this->raiseError('Internal corruption error: invalid channel "' .
+                $channel . '"');
+        }
+        $rest = new PEAR_REST($this->config);
+        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
+        $mirror = $this->config->get('preferred_mirror', null,
+                                     $channel);
+        $a = $rest->downloadHttp('http://' . $channel .
+            '/channel.xml', $chan->lastModified());
+        PEAR::staticPopErrorHandling();
+        if (!PEAR::isError($a) && $a) {
+            $this->ui->outputData('WARNING: channel "' . $channel . '" has ' .
+                'updated its protocols, use "' . PEAR_RUNTYPE . ' channel-update ' . $channel .
+                '" to update');
+        }
+    }
+
+    function doRemoteInfo($command, $options, $params)
+    {
+        if (sizeof($params) != 1) {
+            return $this->raiseError("$command expects one param: the remote package name");
+        }
+        $savechannel = $channel = $this->config->get('default_channel');
+        $reg = &$this->config->getRegistry();
+        $package = $params[0];
+        $parsed = $reg->parsePackageName($package, $channel);
+        if (PEAR::isError($parsed)) {
+            return $this->raiseError('Invalid package name "' . $package . '"');
+        }
+
+        $channel = $parsed['channel'];
+        $this->config->set('default_channel', $channel);
+        $chan = $reg->getChannel($channel);
+        if (PEAR::isError($e = $this->_checkChannelForStatus($channel, $chan))) {
+            return $e;
+        }
+
+        $mirror = $this->config->get('preferred_mirror');
+        if ($chan->supportsREST($mirror) && $base = $chan->getBaseURL('REST1.0', $mirror)) {
+            $rest = &$this->config->getREST('1.0', array());
+            $info = $rest->packageInfo($base, $parsed['package'], $channel);
+        }
+
+        if (!isset($info)) {
+            return $this->raiseError('No supported protocol was found');
+        }
+
+        if (PEAR::isError($info)) {
+            $this->config->set('default_channel', $savechannel);
+            return $this->raiseError($info);
+        }
+
+        if (!isset($info['name'])) {
+            return $this->raiseError('No remote package "' . $package . '" was found');
+        }
+
+        $installed = $reg->packageInfo($info['name'], null, $channel);
+        $info['installed'] = $installed['version'] ? $installed['version'] : '- no -';
+        if (is_array($info['installed'])) {
+            $info['installed'] = $info['installed']['release'];
+        }
+
+        $this->ui->outputData($info, $command);
+        $this->config->set('default_channel', $savechannel);
+
+        return true;
+    }
+
+    function doRemoteList($command, $options, $params)
+    {
+        $savechannel = $channel = $this->config->get('default_channel');
+        $reg = &$this->config->getRegistry();
+        if (isset($options['channel'])) {
+            $channel = $options['channel'];
+            if (!$reg->channelExists($channel)) {
+                return $this->raiseError('Channel "' . $channel . '" does not exist');
+            }
+
+            $this->config->set('default_channel', $channel);
+        }
+
+        $chan = $reg->getChannel($channel);
+        if (PEAR::isError($e = $this->_checkChannelForStatus($channel, $chan))) {
+            return $e;
+        }
+
+        $list_options = false;
+        if ($this->config->get('preferred_state') == 'stable') {
+            $list_options = true;
+        }
+
+        $available = array();
+        if ($chan->supportsREST($this->config->get('preferred_mirror')) &&
+              $base = $chan->getBaseURL('REST1.1', $this->config->get('preferred_mirror'))
+        ) {
+            // use faster list-all if available
+            $rest = &$this->config->getREST('1.1', array());
+            $available = $rest->listAll($base, $list_options, true, false, false, $chan->getName());
+        } elseif ($chan->supportsREST($this->config->get('preferred_mirror')) &&
+              $base = $chan->getBaseURL('REST1.0', $this->config->get('preferred_mirror'))) {
+            $rest = &$this->config->getREST('1.0', array());
+            $available = $rest->listAll($base, $list_options, true, false, false, $chan->getName());
+        }
+
+        if (PEAR::isError($available)) {
+            $this->config->set('default_channel', $savechannel);
+            return $this->raiseError($available);
+        }
+
+        $i = $j = 0;
+        $data = array(
+            'caption' => 'Channel ' . $channel . ' Available packages:',
+            'border' => true,
+            'headline' => array('Package', 'Version'),
+            'channel' => $channel
+            );
+
+        if (count($available) == 0) {
+            $data = '(no packages available yet)';
+        } else {
+            foreach ($available as $name => $info) {
+                $version = (isset($info['stable']) && $info['stable']) ? $info['stable'] : '-n/a-';
+                $data['data'][] = array($name, $version);
+            }
+        }
+        $this->ui->outputData($data, $command);
+        $this->config->set('default_channel', $savechannel);
+        return true;
+    }
+
+    function doListAll($command, $options, $params)
+    {
+        $savechannel = $channel = $this->config->get('default_channel');
+        $reg = &$this->config->getRegistry();
+        if (isset($options['channel'])) {
+            $channel = $options['channel'];
+            if (!$reg->channelExists($channel)) {
+                return $this->raiseError("Channel \"$channel\" does not exist");
+            }
+
+            $this->config->set('default_channel', $channel);
+        }
+
+        $list_options = false;
+        if ($this->config->get('preferred_state') == 'stable') {
+            $list_options = true;
+        }
+
+        $chan = $reg->getChannel($channel);
+        if (PEAR::isError($e = $this->_checkChannelForStatus($channel, $chan))) {
+            return $e;
+        }
+
+        if ($chan->supportsREST($this->config->get('preferred_mirror')) &&
+              $base = $chan->getBaseURL('REST1.1', $this->config->get('preferred_mirror'))) {
+            // use faster list-all if available
+            $rest = &$this->config->getREST('1.1', array());
+            $available = $rest->listAll($base, $list_options, false, false, false, $chan->getName());
+        } elseif ($chan->supportsREST($this->config->get('preferred_mirror')) &&
+              $base = $chan->getBaseURL('REST1.0', $this->config->get('preferred_mirror'))) {
+            $rest = &$this->config->getREST('1.0', array());
+            $available = $rest->listAll($base, $list_options, false, false, false, $chan->getName());
+        }
+
+        if (PEAR::isError($available)) {
+            $this->config->set('default_channel', $savechannel);
+            return $this->raiseError('The package list could not be fetched from the remote server. Please try again. (Debug info: "' . $available->getMessage() . '")');
+        }
+
+        $data = array(
+            'caption' => 'All packages [Channel ' . $channel . ']:',
+            'border' => true,
+            'headline' => array('Package', 'Latest', 'Local'),
+            'channel' => $channel,
+            );
+
+        if (isset($options['channelinfo'])) {
+            // add full channelinfo
+            $data['caption'] = 'Channel ' . $channel . ' All packages:';
+            $data['headline'] = array('Channel', 'Package', 'Latest', 'Local',
+                'Description', 'Dependencies');
+        }
+        $local_pkgs = $reg->listPackages($channel);
+
+        foreach ($available as $name => $info) {
+            $installed = $reg->packageInfo($name, null, $channel);
+            if (is_array($installed['version'])) {
+                $installed['version'] = $installed['version']['release'];
+            }
+            $desc = $info['summary'];
+            if (isset($params[$name])) {
+                $desc .= "\n\n".$info['description'];
+            }
+            if (isset($options['mode']))
+            {
+                if ($options['mode'] == 'installed' && !isset($installed['version'])) {
+                    continue;
+                }
+                if ($options['mode'] == 'notinstalled' && isset($installed['version'])) {
+                    continue;
+                }
+                if ($options['mode'] == 'upgrades'
+                      && (!isset($installed['version']) || version_compare($installed['version'],
+                      $info['stable'], '>='))) {
+                    continue;
+                }
+            }
+            $pos = array_search(strtolower($name), $local_pkgs);
+            if ($pos !== false) {
+                unset($local_pkgs[$pos]);
+            }
+
+            if (isset($info['stable']) && !$info['stable']) {
+                $info['stable'] = null;
+            }
+
+            if (isset($options['channelinfo'])) {
+                // add full channelinfo
+                if ($info['stable'] === $info['unstable']) {
+                    $state = $info['state'];
+                } else {
+                    $state = 'stable';
+                }
+                $latest = $info['stable'].' ('.$state.')';
+                $local = '';
+                if (isset($installed['version'])) {
+                    $inst_state = $reg->packageInfo($name, 'release_state', $channel);
+                    $local = $installed['version'].' ('.$inst_state.')';
+                }
+
+                $packageinfo = array(
+                    $channel,
+                    $name,
+                    $latest,
+                    $local,
+                    isset($desc) ? $desc : null,
+                    isset($info['deps']) ? $info['deps'] : null,
+                );
+            } else {
+                $packageinfo = array(
+                    $reg->channelAlias($channel) . '/' . $name,
+                    isset($info['stable']) ? $info['stable'] : null,
+                    isset($installed['version']) ? $installed['version'] : null,
+                    isset($desc) ? $desc : null,
+                    isset($info['deps']) ? $info['deps'] : null,
+                );
+            }
+            $data['data'][$info['category']][] = $packageinfo;
+        }
+
+        if (isset($options['mode']) && in_array($options['mode'], array('notinstalled', 'upgrades'))) {
+            $this->config->set('default_channel', $savechannel);
+            $this->ui->outputData($data, $command);
+            return true;
+        }
+
+        foreach ($local_pkgs as $name) {
+            $info = &$reg->getPackage($name, $channel);
+            $data['data']['Local'][] = array(
+                $reg->channelAlias($channel) . '/' . $info->getPackage(),
+                '',
+                $info->getVersion(),
+                $info->getSummary(),
+                $info->getDeps()
+                );
+        }
+
+        $this->config->set('default_channel', $savechannel);
+        $this->ui->outputData($data, $command);
+        return true;
+    }
+
+    function doSearch($command, $options, $params)
+    {
+        if ((!isset($params[0]) || empty($params[0]))
+            && (!isset($params[1]) || empty($params[1])))
+        {
+            return $this->raiseError('no valid search string supplied');
+        }
+
+        $channelinfo = isset($options['channelinfo']);
+        $reg = &$this->config->getRegistry();
+        if (isset($options['allchannels'])) {
+            // search all channels
+            unset($options['allchannels']);
+            $channels = $reg->getChannels();
+            $errors = array();
+            PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
+            foreach ($channels as $channel) {
+                if ($channel->getName() != '__uri') {
+                    $options['channel'] = $channel->getName();
+                    $ret = $this->doSearch($command, $options, $params);
+                    if (PEAR::isError($ret)) {
+                        $errors[] = $ret;
+                    }
+                }
+            }
+
+            PEAR::staticPopErrorHandling();
+            if (count($errors) !== 0) {
+                // for now, only give first error
+                return PEAR::raiseError($errors[0]);
+            }
+
+            return true;
+        }
+
+        $savechannel = $channel = $this->config->get('default_channel');
+        $package = strtolower($params[0]);
+        $summary = isset($params[1]) ? $params[1] : false;
+        if (isset($options['channel'])) {
+            $reg = &$this->config->getRegistry();
+            $channel = $options['channel'];
+            if (!$reg->channelExists($channel)) {
+                return $this->raiseError('Channel "' . $channel . '" does not exist');
+            }
+
+            $this->config->set('default_channel', $channel);
+        }
+
+        $chan = $reg->getChannel($channel);
+        if (PEAR::isError($e = $this->_checkChannelForStatus($channel, $chan))) {
+            return $e;
+        }
+
+        if ($chan->supportsREST($this->config->get('preferred_mirror')) &&
+              $base = $chan->getBaseURL('REST1.0', $this->config->get('preferred_mirror'))) {
+            $rest = &$this->config->getREST('1.0', array());
+            $available = $rest->listAll($base, false, false, $package, $summary, $chan->getName());
+        }
+
+        if (PEAR::isError($available)) {
+            $this->config->set('default_channel', $savechannel);
+            return $this->raiseError($available);
+        }
+
+        if (!$available && !$channelinfo) {
+            // clean exit when not found, no error !
+            $data = 'no packages found that match pattern "' . $package . '", for channel '.$channel.'.';
+            $this->ui->outputData($data);
+            $this->config->set('default_channel', $channel);
+            return true;
+        }
+
+        if ($channelinfo) {
+            $data = array(
+                'caption' => 'Matched packages, channel ' . $channel . ':',
+                'border' => true,
+                'headline' => array('Channel', 'Package', 'Stable/(Latest)', 'Local'),
+                'channel' => $channel
+                );
+        } else {
+            $data = array(
+                'caption' => 'Matched packages, channel ' . $channel . ':',
+                'border' => true,
+                'headline' => array('Package', 'Stable/(Latest)', 'Local'),
+                'channel' => $channel
+                );
+        }
+
+        if (!$available && $channelinfo) {
+            unset($data['headline']);
+            $data['data'] = 'No packages found that match pattern "' . $package . '".';
+            $available = array();
+        }
+
+        foreach ($available as $name => $info) {
+            $installed = $reg->packageInfo($name, null, $channel);
+            $desc = $info['summary'];
+            if (isset($params[$name]))
+                $desc .= "\n\n".$info['description'];
+
+            if (!isset($info['stable']) || !$info['stable']) {
+                $version_remote = 'none';
+            } else {
+                if ($info['unstable']) {
+                    $version_remote = $info['unstable'];
+                } else {
+                    $version_remote = $info['stable'];
+                }
+                $version_remote .= ' ('.$info['state'].')';
+            }
+            $version = is_array($installed['version']) ? $installed['version']['release'] :
+                $installed['version'];
+            if ($channelinfo) {
+                $packageinfo = array(
+                    $channel,
+                    $name,
+                    $version_remote,
+                    $version,
+                    $desc,
+                );
+            } else {
+                $packageinfo = array(
+                    $name,
+                    $version_remote,
+                    $version,
+                    $desc,
+                );
+            }
+            $data['data'][$info['category']][] = $packageinfo;
+        }
+
+        $this->ui->outputData($data, $command);
+        $this->config->set('default_channel', $channel);
+        return true;
+    }
+
+    function &getDownloader($options)
+    {
+        if (!class_exists('PEAR_Downloader')) {
+            require_once 'PEAR/Downloader.php';
+        }
+        $a = &new PEAR_Downloader($this->ui, $options, $this->config);
+        return $a;
+    }
+
+    function doDownload($command, $options, $params)
+    {
+        // make certain that dependencies are ignored
+        $options['downloadonly'] = 1;
+
+        // eliminate error messages for preferred_state-related errors
+        /* TODO: Should be an option, but until now download does respect
+           prefered state */
+        /* $options['ignorepreferred_state'] = 1; */
+        // eliminate error messages for preferred_state-related errors
+
+        $downloader = &$this->getDownloader($options);
+        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
+        $e = $downloader->setDownloadDir(getcwd());
+        PEAR::staticPopErrorHandling();
+        if (PEAR::isError($e)) {
+            return $this->raiseError('Current directory is not writeable, cannot download');
+        }
+
+        $errors = array();
+        $downloaded = array();
+        $err = $downloader->download($params);
+        if (PEAR::isError($err)) {
+            return $err;
+        }
+
+        $errors = $downloader->getErrorMsgs();
+        if (count($errors)) {
+            foreach ($errors as $error) {
+                if ($error !== null) {
+                    $this->ui->outputData($error);
+                }
+            }
+
+            return $this->raiseError("$command failed");
+        }
+
+        $downloaded = $downloader->getDownloadedPackages();
+        foreach ($downloaded as $pkg) {
+            $this->ui->outputData("File $pkg[file] downloaded", $command);
+        }
+
+        return true;
+    }
+
+    function downloadCallback($msg, $params = null)
+    {
+        if ($msg == 'done') {
+            $this->bytes_downloaded = $params;
+        }
+    }
+
+    function doListUpgrades($command, $options, $params)
+    {
+        require_once 'PEAR/Common.php';
+        if (isset($params[0]) && !is_array(PEAR_Common::betterStates($params[0]))) {
+            return $this->raiseError($params[0] . ' is not a valid state (stable/beta/alpha/devel/etc.) try "pear help list-upgrades"');
+        }
+
+        $savechannel = $channel = $this->config->get('default_channel');
+        $reg = &$this->config->getRegistry();
+        foreach ($reg->listChannels() as $channel) {
+            $inst = array_flip($reg->listPackages($channel));
+            if (!count($inst)) {
+                continue;
+            }
+
+            if ($channel == '__uri') {
+                continue;
+            }
+
+            $this->config->set('default_channel', $channel);
+            $state = empty($params[0]) ? $this->config->get('preferred_state') : $params[0];
+
+            $caption = $channel . ' Available Upgrades';
+            $chan = $reg->getChannel($channel);
+            if (PEAR::isError($e = $this->_checkChannelForStatus($channel, $chan))) {
+                return $e;
+            }
+
+            $latest = array();
+            $base2  = false;
+            $preferred_mirror = $this->config->get('preferred_mirror');
+            if ($chan->supportsREST($preferred_mirror) &&
+                (
+                   //($base2 = $chan->getBaseURL('REST1.4', $preferred_mirror)) ||
+                   ($base  = $chan->getBaseURL('REST1.0', $preferred_mirror))
+                )
+
+            ) {
+                if ($base2) {
+                    $rest = &$this->config->getREST('1.4', array());
+                    $base = $base2;
+                } else {
+                    $rest = &$this->config->getREST('1.0', array());
+                }
+
+                if (empty($state) || $state == 'any') {
+                    $state = false;
+                } else {
+                    $caption .= ' (' . implode(', ', PEAR_Common::betterStates($state, true)) . ')';
+                }
+
+                PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
+                $latest = $rest->listLatestUpgrades($base, $state, $inst, $channel, $reg);
+                PEAR::staticPopErrorHandling();
+            }
+
+            if (PEAR::isError($latest)) {
+                $this->ui->outputData($latest->getMessage());
+                continue;
+            }
+
+            $caption .= ':';
+            if (PEAR::isError($latest)) {
+                $this->config->set('default_channel', $savechannel);
+                return $latest;
+            }
+
+            $data = array(
+                'caption' => $caption,
+                'border' => 1,
+                'headline' => array('Channel', 'Package', 'Local', 'Remote', 'Size'),
+                'channel' => $channel
+                );
+
+            foreach ((array)$latest as $pkg => $info) {
+                $package = strtolower($pkg);
+                if (!isset($inst[$package])) {
+                    // skip packages we don't have installed
+                    continue;
+                }
+
+                extract($info);
+                $inst_version = $reg->packageInfo($package, 'version', $channel);
+                $inst_state   = $reg->packageInfo($package, 'release_state', $channel);
+                if (version_compare("$version", "$inst_version", "le")) {
+                    // installed version is up-to-date
+                    continue;
+                }
+
+                if ($filesize >= 20480) {
+                    $filesize += 1024 - ($filesize % 1024);
+                    $fs = sprintf("%dkB", $filesize / 1024);
+                } elseif ($filesize > 0) {
+                    $filesize += 103 - ($filesize % 103);
+                    $fs = sprintf("%.1fkB", $filesize / 1024.0);
+                } else {
+                    $fs = "  -"; // XXX center instead
+                }
+
+                $data['data'][] = array($channel, $pkg, "$inst_version ($inst_state)", "$version ($state)", $fs);
+            }
+
+            if (isset($options['channelinfo'])) {
+                if (empty($data['data'])) {
+                    unset($data['headline']);
+                    if (count($inst) == 0) {
+                        $data['data'] = '(no packages installed)';
+                    } else {
+                        $data['data'] = '(no upgrades available)';
+                    }
+                }
+                $this->ui->outputData($data, $command);
+            } else {
+                if (empty($data['data'])) {
+                    $this->ui->outputData('Channel ' . $channel . ': No upgrades available');
+                } else {
+                    $this->ui->outputData($data, $command);
+                }
+            }
+        }
+
+        $this->config->set('default_channel', $savechannel);
+        return true;
+    }
+
+    function doClearCache($command, $options, $params)
+    {
+        $cache_dir = $this->config->get('cache_dir');
+        $verbose   = $this->config->get('verbose');
+        $output = '';
+        if (!file_exists($cache_dir) || !is_dir($cache_dir)) {
+            return $this->raiseError("$cache_dir does not exist or is not a directory");
+        }
+
+        if (!($dp = @opendir($cache_dir))) {
+            return $this->raiseError("opendir($cache_dir) failed: $php_errormsg");
+        }
+
+        if ($verbose >= 1) {
+            $output .= "reading directory $cache_dir\n";
+        }
+
+        $num = 0;
+        while ($ent = readdir($dp)) {
+            if (preg_match('/rest.cache(file|id)\\z/', $ent)) {
+                $path = $cache_dir . DIRECTORY_SEPARATOR . $ent;
+                if (file_exists($path)) {
+                    $ok = @unlink($path);
+                } else {
+                    $ok = false;
+                    $php_errormsg = '';
+                }
+
+                if ($ok) {
+                    if ($verbose >= 2) {
+                        $output .= "deleted $path\n";
+                    }
+                    $num++;
+                } elseif ($verbose >= 1) {
+                    $output .= "failed to delete $path $php_errormsg\n";
+                }
+            }
+        }
+
+        closedir($dp);
+        if ($verbose >= 1) {
+            $output .= "$num cache entries cleared\n";
+        }
+
+        $this->ui->outputData(rtrim($output), $command);
+        return $num;
+    }
+}
\ No newline at end of file