channels.php

php-4.4.7学习linux时下载的源代码

<?php
// /* vim: set expandtab tabstop=4 shiftwidth=4: */
/**
 * PEAR_Command_Channels (list-channels, update-channels, channel-delete, channel-add,
 * channel-update, channel-info, channel-alias, channel-discover commands)
 *
 * 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: Channels.php,v 1.1.2.1 2005/11/02 16:57:23 cellog Exp $
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a1
 */

/**
 * base class
 */
require_once 'PEAR/Command/Common.php';

/**
 * PEAR commands for managing channels.
 *
 * @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 1.4.0a1
 */
class PEAR_Command_Channels extends PEAR_Command_Common
{
    // {{{ properties

    var $commands = array(
        'list-channels' => array(
            'summary' => 'List Available Channels',
            'function' => 'doList',
            'shortcut' => 'lc',
            'options' => array(),
            'doc' => '
List all available channels for installation.
',
            ),
        'update-channels' => array(
            'summary' => 'Update the Channel List',
            'function' => 'doUpdateAll',
            'shortcut' => 'uc',
            'options' => array(),
            'doc' => '
List all installed packages in all channels.
'
            ),
        'channel-delete' => array(
            'summary' => 'Remove a Channel From the List',
            'function' => 'doDelete',
            'shortcut' => 'cde',
            'options' => array(),
            'doc' => '<channel name>
Delete a channel from the registry.  You may not
remove any channel that has installed packages.
'
            ),
        'channel-add' => array(
            'summary' => 'Add a Channel',
            'function' => 'doAdd',
            'shortcut' => 'ca',
            'options' => array(),
            'doc' => '<channel.xml>
Add a private channel to the channel list.  Note that all
public channels should be synced using "update-channels".
Parameter may be either a local file or remote URL to a
channel.xml.
'
            ),
        'channel-update' => array(
            'summary' => 'Update an Existing Channel',
            'function' => 'doUpdate',
            'shortcut' => 'cu',
            'options' => array(
                'force' => array(
                    'shortopt' => 'f',
                    'doc' => 'will force download of new channel.xml if an existing channel name is used',
                    ),
                'channel' => array(
                    'shortopt' => 'c',
                    'arg' => 'CHANNEL',
                    'doc' => 'will force download of new channel.xml if an existing channel name is used',
                    ),
),
            'doc' => '[<channel.xml>|<channel name>]
Update a channel in the channel list directly.  Note that all
public channels can be synced using "update-channels".
Parameter may be a local or remote channel.xml, or the name of
an existing channel.
'
            ),
        'channel-info' => array(
            'summary' => 'Retrieve Information on a Channel',
            'function' => 'doInfo',
            'shortcut' => 'ci',
            'options' => array(),
            'doc' => '<package>
List the files in an installed package.
'
            ),
        'channel-alias' => array(
            'summary' => 'Specify an alias to a channel name',
            'function' => 'doAlias',
            'shortcut' => 'cha',
            'options' => array(),
            'doc' => '<channel> <alias>
Specify a specific alias to use for a channel name.
The alias may not be an existing channel name or
alias.
'
            ),
        'channel-discover' => array(
            'summary' => 'Initialize a Channel from its server',
            'function' => 'doDiscover',
            'shortcut' => 'di',
            'options' => array(),
            'doc' => '<package>
List the files in an installed package.
'
            ),
        );

    // }}}
    // {{{ constructor

    /**
     * PEAR_Command_Registry constructor.
     *
     * @access public
     */
    function PEAR_Command_Channels(&$ui, &$config)
    {
        parent::PEAR_Command_Common($ui, $config);
    }

    // }}}

    // {{{ doList()
    
    function _sortChannels($a, $b)
    {
        return strnatcasecmp($a->getName(), $b->getName());
    }

    function doList($command, $options, $params)
    {
        $reg = &$this->config->getRegistry();
        $registered = $reg->getChannels();
        usort($registered, array(&$this, '_sortchannels'));
        $i = $j = 0;
        $data = array(
            'caption' => 'Registered Channels:',
            'border' => true,
            'headline' => array('Channel', 'Summary')
            );
        foreach ($registered as $channel) {
            $data['data'][] = array($channel->getName(),
                                      $channel->getSummary());
        }
        if (count($registered)==0) {
            $data = '(no registered channels)';
        }
        $this->ui->outputData($data, $command);
        return true;
    }
    
    function doUpdateAll($command, $options, $params)
    {
        $reg = &$this->config->getRegistry();
        $savechannel = $this->config->get('default_channel');
        if (isset($options['channel'])) {
            if (!$reg->channelExists($options['channel'])) {
                return $this->raiseError('Unknown channel "' . $options['channel'] . '"');
            }
            $this->config->set('default_channel', $options['channel']);
        } else {
            $this->config->set('default_channel', 'pear.php.net');
        }
        $remote = &$this->config->getRemote();
        $channels = $remote->call('channel.listAll');
        if (PEAR::isError($channels)) {
            $this->config->set('default_channel', $savechannel);
            return $channels;
        }
        if (!is_array($channels) || isset($channels['faultCode'])) {
            $this->config->set('default_channel', $savechannel);
            return $this->raiseError("Incorrect channel listing returned from channel '$chan'");
        }
        if (!count($channels)) {
            $data = 'no updates available';
        }
        $dl = &$this->getDownloader();
        if (!class_exists('System')) {
            require_once 'System.php';
        }
        $tmpdir = System::mktemp(array('-d'));
        foreach ($channels as $channel) {
            $channel = $channel[0];
            $save = $channel;
            if ($reg->channelExists($channel, true)) {
                $this->ui->outputData("Updating channel \"$channel\"", $command);
                $test = $reg->getChannel($channel, true);
                if (!$test) {
                    $this->ui->outputData("Channel '$channel' is corrupt in registry!", $command);
                    $lastmodified = false;
                } else {
                    $lastmodified = $test->lastModified();
                    
                }
                PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
                $contents = $dl->downloadHttp('http://' . $test->getName() . '/channel.xml',
                    $this->ui, $tmpdir, null, $lastmodified);
                PEAR::staticPopErrorHandling();
                if (PEAR::isError($contents)) {
                    $this->ui->outputData('ERROR: Cannot retrieve channel.xml for channel "' .
                        $test->getName() . '"', $command);
                    continue;
                }
                if (!$contents) {
                    $this->ui->outputData("Channel \"$channel\" is up-to-date", $command);
                    continue;
                }
                list($contents, $lastmodified) = $contents;
                $info = implode('', file($contents));
                if (!$info) {
                    $this->ui->outputData("Channel \"$channel\" is up-to-date", $command);
                    continue;
                }
                if (!class_exists('PEAR_ChannelFile')) {
                    require_once 'PEAR/ChannelFile.php';
                }
                $channelinfo = new PEAR_ChannelFile;
                $channelinfo->fromXmlString($info);
                if ($channelinfo->getErrors()) {
                    $this->ui->outputData("Downloaded channel data from channel \"$channel\" " . 
                        'is corrupt, skipping', $command);
                    continue;
                }
                $channel = $channelinfo;