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Файл: mp3/MP3/PEAR/Downloader/Package.php
Строк: 2184
<?php
/**
 * PEAR_Downloader_Package
 *
 * 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: Package.php 313023 2011-07-06 19:17:11Z dufuz $
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a1
 */

/**
 * Error code when parameter initialization fails because no releases
 * exist within preferred_state, but releases do exist
 */
define('PEAR_DOWNLOADER_PACKAGE_STATE', -1003);
/**
 * Error code when parameter initialization fails because no releases
 * exist that will work with the existing PHP version
 */
define('PEAR_DOWNLOADER_PACKAGE_PHPVERSION', -1004);

/**
 * Coordinates download parameters and manages their dependencies
 * prior to downloading them.
 *
 * Input can come from three sources:
 *
 * - local files (archives or package.xml)
 * - remote files (downloadable urls)
 * - abstract package names
 *
 * The first two elements are handled cleanly by PEAR_PackageFile, but the third requires
 * accessing pearweb's xml-rpc interface to determine necessary dependencies, and the
 * format returned of dependencies is slightly different from that used in package.xml.
 *
 * This class hides the differences between these elements, and makes automatic
 * dependency resolution a piece of cake.  It also manages conflicts when
 * two classes depend on incompatible dependencies, or differing versions of the same
 * package dependency.  In addition, download will not be attempted if the php version is
 * not supported, PEAR installer version is not supported, or non-PECL extensions are not
 * installed.
 * @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 1.4.0a1
 */
class PEAR_Downloader_Package
{
    
/**
     * @var PEAR_Downloader
     */
    
var $_downloader;
    
/**
     * @var PEAR_Config
     */
    
var $_config;
    
/**
     * @var PEAR_Registry
     */
    
var $_registry;
    
/**
     * Used to implement packagingroot properly
     * @var PEAR_Registry
     */
    
var $_installRegistry;
    
/**
     * @var PEAR_PackageFile_v1|PEAR_PackageFile|v2
     */
    
var $_packagefile;
    
/**
     * @var array
     */
    
var $_parsedname;
    
/**
     * @var array
     */
    
var $_downloadURL;
    
/**
     * @var array
     */
    
var $_downloadDeps = array();
    
/**
     * @var boolean
     */
    
var $_valid false;
    
/**
     * @var boolean
     */
    
var $_analyzed false;
    
/**
     * if this or a parent package was invoked with Package-state, this is set to the
     * state variable.
     *
     * This allows temporary reassignment of preferred_state for a parent package and all of
     * its dependencies.
     * @var string|false
     */
    
var $_explicitState false;
    
/**
     * If this package is invoked with Package#group, this variable will be true
     */
    
var $_explicitGroup false;
    
/**
     * Package type local|url
     * @var string
     */
    
var $_type;
    
/**
     * Contents of package.xml, if downloaded from a remote channel
     * @var string|false
     * @access private
     */
    
var $_rawpackagefile;
    
/**
     * @var boolean
     * @access private
     */
    
var $_validated false;

    
/**
     * @param PEAR_Downloader
     */
    
function PEAR_Downloader_Package(&$downloader)
    {
        
$this->_downloader = &$downloader;
        
$this->_config = &$this->_downloader->config;
        
$this->_registry = &$this->_config->getRegistry();
        
$options $downloader->getOptions();
        if (isset(
$options['packagingroot'])) {
            
$this->_config->setInstallRoot($options['packagingroot']);
            
$this->_installRegistry = &$this->_config->getRegistry();
            
$this->_config->setInstallRoot(false);
        } else {
            
$this->_installRegistry = &$this->_registry;
        }
        
$this->_valid $this->_analyzed false;
    }

    
/**
     * Parse the input and determine whether this is a local file, a remote uri, or an
     * abstract package name.
     *
     * This is the heart of the PEAR_Downloader_Package(), and is used in
     * {@link PEAR_Downloader::download()}
     * @param string
     * @return bool|PEAR_Error
     */
    
function initialize($param)
    {
        
$origErr $this->_fromFile($param);
        if (
$this->_valid) {
            return 
true;
        }

        
$options $this->_downloader->getOptions();
        if (isset(
$options['offline'])) {
            if (
PEAR::isError($origErr) && !isset($options['soft'])) {
                foreach (
$origErr->getUserInfo() as $userInfo) {
                    if (isset(
$userInfo['message'])) {
                        
$this->_downloader->log(0$userInfo['message']);
                    }
                }

                
$this->_downloader->log(0$origErr->getMessage());
            }

            return 
PEAR::raiseError('Cannot download non-local package "' $param '"');
        }

        
$err $this->_fromUrl($param);
        if (
PEAR::isError($err) || !$this->_valid) {
            if (
$this->_type == 'url') {
                if (
PEAR::isError($err) && !isset($options['soft'])) {
                    
$this->_downloader->log(0$err->getMessage());
                }

                return 
PEAR::raiseError("Invalid or missing remote package file");
            }

            
$err $this->_fromString($param);
            if (
PEAR::isError($err) || !$this->_valid) {
                if (
PEAR::isError($err) && $err->getCode() == PEAR_DOWNLOADER_PACKAGE_STATE) {
                    return 
false// instruct the downloader to silently skip
                
}

                if (isset(
$this->_type) && $this->_type == 'local' && PEAR::isError($origErr)) {
                    if (
is_array($origErr->getUserInfo())) {
                        foreach (
$origErr->getUserInfo() as $err) {
                            if (
is_array($err)) {
                                
$err $err['message'];
                            }

                            if (!isset(
$options['soft'])) {
                                
$this->_downloader->log(0$err);
                            }
                        }
                    }

                    if (!isset(
$options['soft'])) {
                        
$this->_downloader->log(0$origErr->getMessage());
                    }

                    if (
is_array($param)) {
                        
$param $this->_registry->parsedPackageNameToString($paramtrue);
                    }

                    if (!isset(
$options['soft'])) {
                        
$this->_downloader->log(2"Cannot initialize '$param', invalid or missing package file");
                    }

                    
// Passing no message back - already logged above
                    
return PEAR::raiseError();
                }

                if (
PEAR::isError($err) && !isset($options['soft'])) {
                    
$this->_downloader->log(0$err->getMessage());
                }

                if (
is_array($param)) {
                    
$param $this->_registry->parsedPackageNameToString($paramtrue);
                }

                if (!isset(
$options['soft'])) {
                    
$this->_downloader->log(2"Cannot initialize '$param', invalid or missing package file");
                }

                
// Passing no message back - already logged above
                
return PEAR::raiseError();
            }
        }

        return 
true;
    }

    
/**
     * Retrieve any non-local packages
     * @return PEAR_PackageFile_v1|PEAR_PackageFile_v2|PEAR_Error
     */
    
function &download()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile;
        }

        if (isset(
$this->_downloadURL['url'])) {
            
$this->_isvalid false;
            
$info $this->getParsedPackage();
            foreach (
$info as $i => $p) {
                
$info[$i] = strtolower($p);
            }

            
$err $this->_fromUrl($this->_downloadURL['url'],
                
$this->_registry->parsedPackageNameToString($this->_parsednametrue));
            
$newinfo $this->getParsedPackage();
            foreach (
$newinfo as $i => $p) {
                
$newinfo[$i] = strtolower($p);
            }

            if (
$info != $newinfo) {
                do {
                    if (
$info['channel'] == 'pecl.php.net' && $newinfo['channel'] == 'pear.php.net') {
                        
$info['channel'] = 'pear.php.net';
                        if (
$info == $newinfo) {
                            
// skip the channel check if a pecl package says it's a PEAR package
                            
break;
                        }
                    }
                    if (
$info['channel'] == 'pear.php.net' && $newinfo['channel'] == 'pecl.php.net') {
                        
$info['channel'] = 'pecl.php.net';
                        if (
$info == $newinfo) {
                            
// skip the channel check if a pecl package says it's a PEAR package
                            
break;
                        }
                    }

                    return 
PEAR::raiseError('CRITICAL ERROR: We are ' .
                        
$this->_registry->parsedPackageNameToString($info) . ', but the file ' .
                        
'downloaded claims to be ' .
                        
$this->_registry->parsedPackageNameToString($this->getParsedPackage()));
                } while (
false);
            }

            if (
PEAR::isError($err) || !$this->_valid) {
                return 
$err;
            }
        }

        
$this->_type 'local';
        return 
$this->_packagefile;
    }

    function &
getPackageFile()
    {
        return 
$this->_packagefile;
    }

    function &
getDownloader()
    {
        return 
$this->_downloader;
    }

    function 
getType()
    {
        return 
$this->_type;
    }

    
/**
     * Like {@link initialize()}, but operates on a dependency
     */
    
function fromDepURL($dep)
    {
        
$this->_downloadURL $dep;
        if (isset(
$dep['uri'])) {
            
$options $this->_downloader->getOptions();
            if (!
extension_loaded("zlib") || isset($options['nocompress'])) {
                
$ext '.tar';
            } else {
                
$ext '.tgz';
            }

            
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
            
$err $this->_fromUrl($dep['uri'] . $ext);
            
PEAR::popErrorHandling();
            if (
PEAR::isError($err)) {
                if (!isset(
$options['soft'])) {
                    
$this->_downloader->log(0$err->getMessage());
                }

                return 
PEAR::raiseError('Invalid uri dependency "' $dep['uri'] . $ext '", ' .
                    
'cannot download');
            }
        } else {
            
$this->_parsedname =
                array(
                    
'package' => $dep['info']->getPackage(),
                    
'channel' => $dep['info']->getChannel(),
                    
'version' => $dep['version']
                );
            if (!isset(
$dep['nodefault'])) {
                
$this->_parsedname['group'] = 'default'// download the default dependency group
                
$this->_explicitGroup false;
            }

            
$this->_rawpackagefile $dep['raw'];
        }
    }

    function 
detectDependencies($params)
    {
        
$options $this->_downloader->getOptions();
        if (isset(
$options['downloadonly'])) {
            return;
        }

        if (isset(
$options['offline'])) {
            
$this->_downloader->log(3'Skipping dependency download check, --offline specified');
            return;
        }

        
$pname $this->getParsedPackage();
        if (!
$pname) {
            return;
        }

        
$deps $this->getDeps();
        if (!
$deps) {
            return;
        }

        if (isset(
$deps['required'])) { // package.xml 2.0
            
return $this->_detect2($deps$pname$options$params);
        }

        return 
$this->_detect1($deps$pname$options$params);
    }

    function 
setValidated()
    {
        
$this->_validated true;
    }

    function 
alreadyValidated()
    {
        return 
$this->_validated;
    }

    
/**
     * Remove packages to be downloaded that are already installed
     * @param array of PEAR_Downloader_Package objects
     * @static
     */
    
function removeInstalled(&$params)
    {
        if (!isset(
$params[0])) {
            return;
        }

        
$options $params[0]->_downloader->getOptions();
        if (!isset(
$options['downloadonly'])) {
            foreach (
$params as $i => $param) {
                
$package $param->getPackage();
                
$channel $param->getChannel();
                
// remove self if already installed with this version
                // this does not need any pecl magic - we only remove exact matches
                
if ($param->_installRegistry->packageExists($package$channel)) {
                    
$packageVersion $param->_installRegistry->packageInfo($package'version'$channel);
                    if (
version_compare($packageVersion$param->getVersion(), '==')) {
                        if (!isset(
$options['force'])) {
                            
$info $param->getParsedPackage();
                            unset(
$info['version']);
                            unset(
$info['state']);
                            if (!isset(
$options['soft'])) {
                                
$param->_downloader->log(1'Skipping package "' .
                                    
$param->getShortName() .
                                    
'", already installed as version ' $packageVersion);
                            }
                            
$params[$i] = false;
                        }
                    } elseif (!isset(
$options['force']) && !isset($options['upgrade']) &&
                          !isset(
$options['soft'])) {
                        
$info $param->getParsedPackage();
                        
$param->_downloader->log(1'Skipping package "' .
                            
$param->getShortName() .
                            
'", already installed as version ' $packageVersion);
                        
$params[$i] = false;
                    }
                }
            }
        }

        
PEAR_Downloader_Package::removeDuplicates($params);
    }

    function 
_detect2($deps$pname$options$params)
    {
        
$this->_downloadDeps = array();
        
$groupnotfound false;
        foreach (array(
'package''subpackage') as $packagetype) {
            
// get required dependency group
            
if (isset($deps['required'][$packagetype])) {
                if (isset(
$deps['required'][$packagetype][0])) {
                    foreach (
$deps['required'][$packagetype] as $dep) {
                        if (isset(
$dep['conflicts'])) {
                            
// skip any package that this package conflicts with
                            
continue;
                        }
                        
$ret $this->_detect2Dep($dep$pname'required'$params);
                        if (
is_array($ret)) {
                            
$this->_downloadDeps[] = $ret;
                        } elseif (
PEAR::isError($ret) && !isset($options['soft'])) {
                            
$this->_downloader->log(0$ret->getMessage());
                        }
                    }
                } else {
                    
$dep $deps['required'][$packagetype];
                    if (!isset(
$dep['conflicts'])) {
                        
// skip any package that this package conflicts with
                        
$ret $this->_detect2Dep($dep$pname'required'$params);
                        if (
is_array($ret)) {
                            
$this->_downloadDeps[] = $ret;
                        } elseif (
PEAR::isError($ret) && !isset($options['soft'])) {
                            
$this->_downloader->log(0$ret->getMessage());
                        }
                    }
                }
            }

            
// get optional dependency group, if any
            
if (isset($deps['optional'][$packagetype])) {
                
$skipnames = array();
                if (!isset(
$deps['optional'][$packagetype][0])) {
                    
$deps['optional'][$packagetype] = array($deps['optional'][$packagetype]);
                }

                foreach (
$deps['optional'][$packagetype] as $dep) {
                    
$skip false;
                    if (!isset(
$options['alldeps'])) {
                        
$dep['package'] = $dep['name'];
                        if (!isset(
$options['soft'])) {
                            
$this->_downloader->log(3'Notice: package "' .
                              
$this->_registry->parsedPackageNameToString($this->getParsedPackage(),
                                    
true) . '" optional dependency "' .
                                
$this->_registry->parsedPackageNameToString(array('package' =>
                                    
$dep['name'], 'channel' => 'pear.php.net'), true) .
                                
'" will not be automatically downloaded');
                        }
                        
$skipnames[] = $this->_registry->parsedPackageNameToString($deptrue);
                        
$skip true;
                        unset(
$dep['package']);
                    }

                    
$ret $this->_detect2Dep($dep$pname'optional'$params);
                    if (
PEAR::isError($ret) && !isset($options['soft'])) {
                        
$this->_downloader->log(0$ret->getMessage());
                    }

                    if (!
$ret) {
                        
$dep['package'] = $dep['name'];
                        
$skip count($skipnames) ?
                            
$skipnames[count($skipnames) - 1] : '';
                        if (
$skip ==
                              
$this->_registry->parsedPackageNameToString($deptrue)) {
                            
array_pop($skipnames);
                        }
                    }

                    if (!
$skip && is_array($ret)) {
                        
$this->_downloadDeps[] = $ret;
                    }
                }

                if (
count($skipnames)) {
                    if (!isset(
$options['soft'])) {
                        
$this->_downloader->log(1'Did not download optional dependencies: ' .
                            
implode(', '$skipnames) .
                            
', use --alldeps to download automatically');
                    }
                }
            }

            
// get requested dependency group, if any
            
$groupname $this->getGroup();
            
$explicit  $this->_explicitGroup;
            if (!
$groupname) {
                if (!
$this->canDefault()) {
                    continue;
                }

                
$groupname 'default'// try the default dependency group
            
}

            if (
$groupnotfound) {
                continue;
            }

            if (isset(
$deps['group'])) {
                if (isset(
$deps['group']['attribs'])) {
                    if (
strtolower($deps['group']['attribs']['name']) == strtolower($groupname)) {
                        
$group $deps['group'];
                    } elseif (
$explicit) {
                        if (!isset(
$options['soft'])) {
                            
$this->_downloader->log(0'Warning: package "' .
                                
$this->_registry->parsedPackageNameToString($pnametrue) .
                                
'" has no dependency ' 'group named "' $groupname '"');
                        }

                        
$groupnotfound true;
                        continue;
                    }
                } else {
                    
$found false;
                    foreach (
$deps['group'] as $group) {
                        if (
strtolower($group['attribs']['name']) == strtolower($groupname)) {
                            
$found true;
                            break;
                        }
                    }

                    if (!
$found) {
                        if (
$explicit) {
                            if (!isset(
$options['soft'])) {
                                
$this->_downloader->log(0'Warning: package "' .
                                    
$this->_registry->parsedPackageNameToString($pnametrue) .
                                    
'" has no dependency ' 'group named "' $groupname '"');
                            }
                        }

                        
$groupnotfound true;
                        continue;
                    }
                }
            }

            if (isset(
$group) && isset($group[$packagetype])) {
                if (isset(
$group[$packagetype][0])) {
                    foreach (
$group[$packagetype] as $dep) {
                        
$ret $this->_detect2Dep($dep$pname'dependency group "' .
                            
$group['attribs']['name'] . '"'$params);
                        if (
is_array($ret)) {
                            
$this->_downloadDeps[] = $ret;
                        } elseif (
PEAR::isError($ret) && !isset($options['soft'])) {
                            
$this->_downloader->log(0$ret->getMessage());
                        }
                    }
                } else {
                    
$ret $this->_detect2Dep($group[$packagetype], $pname,
                        
'dependency group "' .
                        
$group['attribs']['name'] . '"'$params);
                    if (
is_array($ret)) {
                        
$this->_downloadDeps[] = $ret;
                    } elseif (
PEAR::isError($ret) && !isset($options['soft'])) {
                        
$this->_downloader->log(0$ret->getMessage());
                    }
                }
            }
        }
    }

    function 
_detect2Dep($dep$pname$group$params)
    {
        if (isset(
$dep['conflicts'])) {
            return 
true;
        }

        
$options $this->_downloader->getOptions();
        if (isset(
$dep['uri'])) {
            return array(
'uri' => $dep['uri'], 'dep' => $dep);;
        }

        
$testdep $dep;
        
$testdep['package'] = $dep['name'];
        if (
PEAR_Downloader_Package::willDownload($testdep$params)) {
            
$dep['package'] = $dep['name'];
            if (!isset(
$options['soft'])) {
                
$this->_downloader->log(2$this->getShortName() . ': Skipping ' $group .
                    
' dependency "' .
                    
$this->_registry->parsedPackageNameToString($deptrue) .
                    
'", will be installed');
            }
            return 
false;
        }

        
$options $this->_downloader->getOptions();
        
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
        if (
$this->_explicitState) {
            
$pname['state'] = $this->_explicitState;
        }

        
$url $this->_downloader->_getDepPackageDownloadUrl($dep$pname);
        if (
PEAR::isError($url)) {
            
PEAR::popErrorHandling();
            return 
$url;
        }

        
$dep['package'] = $dep['name'];
        
$ret $this->_analyzeDownloadURL($url'dependency'$dep$params$group == 'optional' &&
            !isset(
$options['alldeps']), true);
        
PEAR::popErrorHandling();
        if (
PEAR::isError($ret)) {
            if (!isset(
$options['soft'])) {
                
$this->_downloader->log(0$ret->getMessage());
            }

            return 
false;
        }

        
// check to see if a dep is already installed and is the same or newer
        
if (!isset($dep['min']) && !isset($dep['max']) && !isset($dep['recommended'])) {
            
$oper 'has';
        } else {
            
$oper 'gt';
        }

        
// do not try to move this before getDepPackageDownloadURL
        // we can't determine whether upgrade is necessary until we know what
        // version would be downloaded
        
if (!isset($options['force']) && $this->isInstalled($ret$oper)) {
            
$version $this->_installRegistry->packageInfo($dep['name'], 'version'$dep['channel']);
            
$dep['package'] = $dep['name'];
            if (!isset(
$options['soft'])) {
                
$this->_downloader->log(3$this->getShortName() . ': Skipping ' $group .
                    
' dependency "' .
                
$this->_registry->parsedPackageNameToString($deptrue) .
                    
'" version ' $url['version'] . ', already installed as version ' .
                    
$version);
            }

            return 
false;
        }

        if (isset(
$dep['nodefault'])) {
            
$ret['nodefault'] = true;
        }

        return 
$ret;
    }

    function 
_detect1($deps$pname$options$params)
    {
        
$this->_downloadDeps = array();
        
$skipnames = array();
        foreach (
$deps as $dep) {
            
$nodownload false;
            if (isset (
$dep['type']) && $dep['type'] === 'pkg') {
                
$dep['channel'] = 'pear.php.net';
                
$dep['package'] = $dep['name'];
                switch (
$dep['rel']) {
                    case 
'not' :
                        continue 
2;
                    case 
'ge' :
                    case 
'eq' :
                    case 
'gt' :
                    case 
'has' :
                        
$group = (!isset($dep['optional']) || $dep['optional'] == 'no') ?
                            
'required' :
                            
'optional';
                        if (
PEAR_Downloader_Package::willDownload($dep$params)) {
                            
$this->_downloader->log(2$this->getShortName() . ': Skipping ' $group
                                
' dependency "' .
                                
$this->_registry->parsedPackageNameToString($deptrue) .
                                
'", will be installed');
                            continue 
2;
                        }
                        
$fakedp = new PEAR_PackageFile_v1;
                        
$fakedp->setPackage($dep['name']);
                        
// skip internet check if we are not upgrading (bug #5810)
                        
if (!isset($options['upgrade']) && $this->isInstalled(
                              
$fakedp$dep['rel'])) {
                            
$this->_downloader->log(2$this->getShortName() . ': Skipping ' $group
                                
' dependency "' .
                                
$this->_registry->parsedPackageNameToString($deptrue) .
                                
'", is already installed');
                            continue 
2;
                        }
                }

                
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
                if (
$this->_explicitState) {
                    
$pname['state'] = $this->_explicitState;
                }

                
$url $this->_downloader->_getDepPackageDownloadUrl($dep$pname);
                
$chan 'pear.php.net';
                if (
PEAR::isError($url)) {
                    
// check to see if this is a pecl package that has jumped
                    // from pear.php.net to pecl.php.net channel
                    
if (!class_exists('PEAR_Dependency2')) {
                        require_once 
'PEAR/Dependency2.php';
                    }

                    
$newdep PEAR_Dependency2::normalizeDep($dep);
                    
$newdep $newdep[0];
                    
$newdep['channel'] = 'pecl.php.net';
                    
$chan 'pecl.php.net';
                    
$url $this->_downloader->_getDepPackageDownloadUrl($newdep$pname);
                    
$obj = &$this->_installRegistry->getPackage($dep['name']);
                    if (
PEAR::isError($url)) {
                        
PEAR::popErrorHandling();
                        if (
$obj !== null && $this->isInstalled($obj$dep['rel'])) {
                            
$group = (!isset($dep['optional']) || $dep['optional'] == 'no') ?
                                
'required' :
                                
'optional';
                            
$dep['package'] = $dep['name'];
                            if (!isset(
$options['soft'])) {
                                
$this->_downloader->log(3$this->getShortName() .
                                    
': Skipping ' $group ' dependency "' .
                                    
$this->_registry->parsedPackageNameToString($deptrue) .
                                    
'", already installed as version ' $obj->getVersion());
                            }
                            
$skip count($skipnames) ?
                                
$skipnames[count($skipnames) - 1] : '';
                            if (
$skip ==
                                  
$this->_registry->parsedPackageNameToString($deptrue)) {
                                
array_pop($skipnames);
                            }
                            continue;
                        } else {
                            if (isset(
$dep['optional']) && $dep['optional'] == 'yes') {
                                
$this->_downloader->log(2$this->getShortName() .
                                    
': Skipping optional dependency "' .
                                    
$this->_registry->parsedPackageNameToString($deptrue) .
                                    
'", no releases exist');
                                continue;
                            } else {
                                return 
$url;
                            }
                        }
                    }
                }

                
PEAR::popErrorHandling();
                if (!isset(
$options['alldeps'])) {
                    if (isset(
$dep['optional']) && $dep['optional'] == 'yes') {
                        if (!isset(
$options['soft'])) {
                            
$this->_downloader->log(3'Notice: package "' .
                                
$this->getShortName() .
                                
'" optional dependency "' .
                                
$this->_registry->parsedPackageNameToString(
                                    array(
'channel' => $chan'package' =>
                                    
$dep['name']), true) .
                                
'" will not be automatically downloaded');
                        }
                        
$skipnames[] = $this->_registry->parsedPackageNameToString(
                                array(
'channel' => $chan'package' =>
                                
$dep['name']), true);
                        
$nodownload true;
                    }
                }

                if (!isset(
$options['alldeps']) && !isset($options['onlyreqdeps'])) {
                    if (!isset(
$dep['optional']) || $dep['optional'] == 'no') {
                        if (!isset(
$options['soft'])) {
                            
$this->_downloader->log(3'Notice: package "' .
                                
$this->getShortName() .
                                
'" required dependency "' .
                                
$this->_registry->parsedPackageNameToString(
                                    array(
'channel' => $chan'package' =>
                                    
$dep['name']), true) .
                                
'" will not be automatically downloaded');
                        }
                        
$skipnames[] = $this->_registry->parsedPackageNameToString(
                                array(
'channel' => $chan'package' =>
                                
$dep['name']), true);
                        
$nodownload true;
                    }
                }

                
// check to see if a dep is already installed
                // do not try to move this before getDepPackageDownloadURL
                // we can't determine whether upgrade is necessary until we know what
                // version would be downloaded
                
if (!isset($options['force']) && $this->isInstalled(
                        
$url$dep['rel'])) {
                    
$group = (!isset($dep['optional']) || $dep['optional'] == 'no') ?
                        
'required' :
                        
'optional';
                    
$dep['package'] = $dep['name'];
                    if (isset(
$newdep)) {
                        
$version $this->_installRegistry->packageInfo($newdep['name'], 'version'$newdep['channel']);
                    } else {
                        
$version $this->_installRegistry->packageInfo($dep['name'], 'version');
                    }

                    
$dep['version'] = $url['version'];
                    if (!isset(
$options['soft'])) {
                        
$this->_downloader->log(3$this->getShortName() . ': Skipping ' $group .
                            
' dependency "' .
                            
$this->_registry->parsedPackageNameToString($deptrue) .
                            
'", already installed as version ' $version);
                    }

                    
$skip count($skipnames) ?
                        
$skipnames[count($skipnames) - 1] : '';
                    if (
$skip ==
                          
$this->_registry->parsedPackageNameToString($deptrue)) {
                        
array_pop($skipnames);
                    }

                    continue;
                }

                if (
$nodownload) {
                    continue;
                }

                
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
                if (isset(
$newdep)) {
                    
$dep $newdep;
                }

                
$dep['package'] = $dep['name'];
                
$ret $this->_analyzeDownloadURL($url'dependency'$dep$params,
                    isset(
$dep['optional']) && $dep['optional'] == 'yes' &&
                    !isset(
$options['alldeps']), true);
                
PEAR::popErrorHandling();
                if (
PEAR::isError($ret)) {
                    if (!isset(
$options['soft'])) {
                        
$this->_downloader->log(0$ret->getMessage());
                    }
                    continue;
                }

                
$this->_downloadDeps[] = $ret;
            }
        }

        if (
count($skipnames)) {
            if (!isset(
$options['soft'])) {
                
$this->_downloader->log(1'Did not download dependencies: ' .
                    
implode(', '$skipnames) .
                    
', use --alldeps or --onlyreqdeps to download automatically');
            }
        }
    }

    function 
setDownloadURL($pkg)
    {
        
$this->_downloadURL $pkg;
    }

    
/**
     * Set the package.xml object for this downloaded package
     *
     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2 $pkg
     */
    
function setPackageFile(&$pkg)
    {
        
$this->_packagefile = &$pkg;
    }

    function 
getShortName()
    {
        return 
$this->_registry->parsedPackageNameToString(array('channel' => $this->getChannel(),
            
'package' => $this->getPackage()), true);
    }

    function 
getParsedPackage()
    {
        if (isset(
$this->_packagefile) || isset($this->_parsedname)) {
            return array(
'channel' => $this->getChannel(),
                
'package' => $this->getPackage(),
                
'version' => $this->getVersion());
        }

        return 
false;
    }

    function 
getDownloadURL()
    {
        return 
$this->_downloadURL;
    }

    function 
canDefault()
    {
        if (isset(
$this->_downloadURL) && isset($this->_downloadURL['nodefault'])) {
            return 
false;
        }

        return 
true;
    }

    function 
getPackage()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->getPackage();
        } elseif (isset(
$this->_downloadURL['info'])) {
            return 
$this->_downloadURL['info']->getPackage();
        }

        return 
false;
    }

    
/**
     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
     */
    
function isSubpackage(&$pf)
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->isSubpackage($pf);
        } elseif (isset(
$this->_downloadURL['info'])) {
            return 
$this->_downloadURL['info']->isSubpackage($pf);
        }

        return 
false;
    }

    function 
getPackageType()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->getPackageType();
        } elseif (isset(
$this->_downloadURL['info'])) {
            return 
$this->_downloadURL['info']->getPackageType();
        }

        return 
false;
    }

    function 
isBundle()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->getPackageType() == 'bundle';
        }

        return 
false;
    }

    function 
getPackageXmlVersion()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->getPackagexmlVersion();
        } elseif (isset(
$this->_downloadURL['info'])) {
            return 
$this->_downloadURL['info']->getPackagexmlVersion();
        }

        return 
'1.0';
    }

    function 
getChannel()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->getChannel();
        } elseif (isset(
$this->_downloadURL['info'])) {
            return 
$this->_downloadURL['info']->getChannel();
        }

        return 
false;
    }

    function 
getURI()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->getURI();
        } elseif (isset(
$this->_downloadURL['info'])) {
            return 
$this->_downloadURL['info']->getURI();
        }

        return 
false;
    }

    function 
getVersion()
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->getVersion();
        } elseif (isset(
$this->_downloadURL['version'])) {
            return 
$this->_downloadURL['version'];
        }

        return 
false;
    }

    function 
isCompatible($pf)
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->isCompatible($pf);
        } elseif (isset(
$this->_downloadURL['info'])) {
            return 
$this->_downloadURL['info']->isCompatible($pf);
        }

        return 
true;
    }

    function 
setGroup($group)
    {
        
$this->_parsedname['group'] = $group;
    }

    function 
getGroup()
    {
        if (isset(
$this->_parsedname['group'])) {
            return 
$this->_parsedname['group'];
        }

        return 
'';
    }

    function 
isExtension($name)
    {
        if (isset(
$this->_packagefile)) {
            return 
$this->_packagefile->isExtension($name);
        } elseif (isset(
$this->_downloadURL['info'])) {
            if (
$this->_downloadURL['info']->getPackagexmlVersion() == '2.0') {
                return 
$this->_downloadURL['info']->getProvidesExtension() == $name;
            }

            return 
false;
        }

        return 
false;
    }

    function 
getDeps()
    {
        if (isset(
$this->_packagefile)) {
            
$ver $this->_packagefile->getPackagexmlVersion();
            if (
version_compare($ver'2.0''>=')) {
                return 
$this->_packagefile->getDeps(true);
            }

            return 
$this->_packagefile->getDeps();
        } elseif (isset(
$this->_downloadURL['info'])) {
            
$ver $this->_downloadURL['info']->getPackagexmlVersion();
            if (
version_compare($ver'2.0''>=')) {
                return 
$this->_downloadURL['info']->getDeps(true);
            }

            return 
$this->_downloadURL['info']->getDeps();
        }

        return array();
    }

    
/**
     * @param array Parsed array from {@link PEAR_Registry::parsePackageName()} or a dependency
     *                     returned from getDepDownloadURL()
     */
    
function isEqual($param)
    {
        if (
is_object($param)) {
            
$channel $param->getChannel();
            
$package $param->getPackage();
            if (
$param->getURI()) {
                
$param = array(
                    
'channel' => $param->getChannel(),
                    
'package' => $param->getPackage(),
                    
'version' => $param->getVersion(),
                    
'uri' => $param->getURI(),
                );
            } else {
                
$param = array(
                    
'channel' => $param->getChannel(),
                    
'package' => $param->getPackage(),
                    
'version' => $param->getVersion(),
                );
            }
        } else {
            if (isset(
$param['uri'])) {
                if (
$this->getChannel() != '__uri') {
                    return 
false;
                }
                return 
$param['uri'] == $this->getURI();
            }

            
$package = isset($param['package']) ? $param['package'] : $param['info']->getPackage();
            
$channel = isset($param['channel']) ? $param['channel'] : $param['info']->getChannel();
            if (isset(
$param['rel'])) {
                if (!
class_exists('PEAR_Dependency2')) {
                    require_once 
'PEAR/Dependency2.php';
                }

                
$newdep PEAR_Dependency2::normalizeDep($param);
                
$newdep $newdep[0];
            } elseif (isset(
$param['min'])) {
                
$newdep $param;
            }
        }

        if (isset(
$newdep)) {
            if (!isset(
$newdep['min'])) {
                
$newdep['min'] = '0';
            }

            if (!isset(
$newdep['max'])) {
                
$newdep['max'] = '100000000000000000000';
            }

            
// use magic to support pecl packages suddenly jumping to the pecl channel
            // we need to support both dependency possibilities
            
if ($channel == 'pear.php.net' && $this->getChannel() == 'pecl.php.net') {
                if (
$package == $this->getPackage()) {
                    
$channel 'pecl.php.net';
                }
            }
            if (
$channel == 'pecl.php.net' && $this->getChannel() == 'pear.php.net') {
                if (
$package == $this->getPackage()) {
                    
$channel 'pear.php.net';
                }
            }

            return (
strtolower($package) == strtolower($this->getPackage()) &&
                
$channel == $this->getChannel() &&
                
version_compare($newdep['min'], $this->getVersion(), '<=') &&
                
version_compare($newdep['max'], $this->getVersion(), '>='));
        }

        
// use magic to support pecl packages suddenly jumping to the pecl channel
        
if ($channel == 'pecl.php.net' && $this->getChannel() == 'pear.php.net') {
            if (
strtolower($package) == strtolower($this->getPackage())) {
                
$channel 'pear.php.net';
            }
        }

        if (isset(
$param['version'])) {
            return (
strtolower($package) == strtolower($this->getPackage()) &&
                
$channel == $this->getChannel() &&
                
$param['version'] == $this->getVersion());
        }

        return 
strtolower($package) == strtolower($this->getPackage()) &&
            
$channel == $this->getChannel();
    }

    function 
isInstalled($dep$oper '==')
    {
        if (!
$dep) {
            return 
false;
        }

        if (
$oper != 'ge' && $oper != 'gt' && $oper != 'has' && $oper != '==') {
            return 
false;
        }

        if (
is_object($dep)) {
            
$package $dep->getPackage();
            
$channel $dep->getChannel();
            if (
$dep->getURI()) {
                
$dep = array(
                    
'uri' => $dep->getURI(),
                    
'version' => $dep->getVersion(),
                );
            } else {
                
$dep = array(
                    
'version' => $dep->getVersion(),
                );
            }
        } else {
            if (isset(
$dep['uri'])) {
                
$channel '__uri';
                
$package $dep['dep']['name'];
            } else {
                
$channel $dep['info']->getChannel();
                
$package $dep['info']->getPackage();
            }
        }

        
$options $this->_downloader->getOptions();
        
$test    $this->_installRegistry->packageExists($package$channel);
        if (!
$test && $channel == 'pecl.php.net') {
            
// do magic to allow upgrading from old pecl packages to new ones
            
$test $this->_installRegistry->packageExists($package'pear.php.net');
            
$channel 'pear.php.net';
        }

        if (
$test) {
            if (isset(
$dep['uri'])) {
                if (
$this->_installRegistry->packageInfo($package'uri''__uri') == $dep['uri']) {
                    return 
true;
                }
            }

            if (isset(
$options['upgrade'])) {
                
$packageVersion $this->_installRegistry->packageInfo($package'version'$channel);
                if (
version_compare($packageVersion$dep['version'], '>=')) {
                    return 
true;
                }

                return 
false;
            }

            return 
true;
        }

        return 
false;
    }

    
/**
     * Detect duplicate package names with differing versions
     *
     * If a user requests to install Date 1.4.6 and Date 1.4.7,
     * for instance, this is a logic error.  This method
     * detects this situation.
     *
     * @param array $params array of PEAR_Downloader_Package objects
     * @param array $errorparams empty array
     * @return array array of stupid duplicated packages in PEAR_Downloader_Package obejcts
     */
    
function detectStupidDuplicates($params, &$errorparams)
    {
        
$existing = array();
        foreach (
$params as $i => $param) {
            
$package $param->getPackage();
            
$channel $param->getChannel();
            
$group   $param->getGroup();
            if (!isset(
$existing[$channel '/' $package])) {
                
$existing[$channel '/' $package] = array();
            }

            if (!isset(
$existing[$channel '/' $package][$group])) {
                
$existing[$channel '/' $package][$group] = array();
            }

            
$existing[$channel '/' $package][$group][] = $i;
        }

        
$indices = array();
        foreach (
$existing as $package => $groups) {
            foreach (
$groups as $group => $dupes) {
                if (
count($dupes) > 1) {
                    
$indices $indices $dupes;
                }
            }
        }

        
$indices array_unique($indices);
        foreach (
$indices as $index) {
            
$errorparams[] = $params[$index];
        }

        return 
count($errorparams);
    }

    
/**
     * @param array
     * @param bool ignore install groups - for final removal of dupe packages
     * @static
     */
    
function removeDuplicates(&$params$ignoreGroups false)
    {
        
$pnames = array();
        foreach (
$params as $i => $param) {
            if (!
$param) {
                continue;
            }

            if (
$param->getPackage()) {
                
$group $ignoreGroups '' $param->getGroup();
                
$pnames[$i] = $param->getChannel() . '/' .
                    
$param->getPackage() . '-' $param->getVersion() . '#' $group;
            }
        }

        
$pnames array_unique($pnames);
        
$unset  array_diff(array_keys($params), array_keys($pnames));
        
$testp  array_flip($pnames);
        foreach (
$params as $i => $param) {
            if (!
$param) {
                
$unset[] = $i;
                continue;
            }

            if (!
is_a($param'PEAR_Downloader_Package')) {
                
$unset[] = $i;
                continue;
            }

            
$group $ignoreGroups '' $param->getGroup();
            if (!isset(
$testp[$param->getChannel() . '/' $param->getPackage() . '-' .
                  
$param->getVersion() . '#' $group])) {
                
$unset[] = $i;
            }
        }

        foreach (
$unset as $i) {
            unset(
$params[$i]);
        }

        
$ret = array();
        foreach (
$params as $i => $param) {
            
$ret[] = &$params[$i];
        }

        
$params = array();
        foreach (
$ret as $i => $param) {
            
$params[] = &$ret[$i];
        }
    }

    function 
explicitState()
    {
        return 
$this->_explicitState;
    }

    function 
setExplicitState($s)
    {
        
$this->_explicitState $s;
    }

    
/**
     * @static
     */
    
function mergeDependencies(&$params)
    {
        
$bundles $newparams = array();
        foreach (
$params as $i => $param) {
            if (!
$param->isBundle()) {
                continue;
            }

            
$bundles[] = $i;
            
$pf = &$param->getPackageFile();
            
$newdeps = array();
            
$contents $pf->getBundledPackages();
            if (!
is_array($contents)) {
                
$contents = array($contents);
            }

            foreach (
$contents as $file) {
                
$filecontents $pf->getFileContents($file);
                
$dl = &$param->getDownloader();
                
$options $dl->getOptions();
                if (
PEAR::isError($dir $dl->getDownloadDir())) {
                    return 
$dir;
                }

                
$fp = @fopen($dir DIRECTORY_SEPARATOR $file'wb');
                if (!
$fp) {
                    continue;
                }

                
// FIXME do symlink check

                
fwrite($fp$filecontentsstrlen($filecontents));
                
fclose($fp);
                if (
$s $params[$i]->explicitState()) {
                    
$obj->setExplicitState($s);
                }

                
$obj = &new PEAR_Downloader_Package($params[$i]->getDownloader());
                
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
                if (
PEAR::isError($dir $dl->getDownloadDir())) {
                    
PEAR::popErrorHandling();
                    return 
$dir;
                }

                
$e $obj->_fromFile($a $dir DIRECTORY_SEPARATOR $file);
                
PEAR::popErrorHandling();
                if (
PEAR::isError($e)) {
                    if (!isset(
$options['soft'])) {
                        
$dl->log(0$e->getMessage());
                    }
                    continue;
                }

                
$j = &$obj;
                if (!
PEAR_Downloader_Package::willDownload($j,
                      
array_merge($params$newparams)) && !$param->isInstalled($j)) {
                    
$newparams[] = &$j;
                }
            }
        }

        foreach (
$bundles as $i) {
            unset(
$params[$i]); // remove bundles - only their contents matter for installation
        
}

        
PEAR_Downloader_Package::removeDuplicates($params); // strip any unset indices
        
if (count($newparams)) { // add in bundled packages for install
            
foreach ($newparams as $i => $unused) {
                
$params[] = &$newparams[$i];
            }
            
$newparams = array();
        }

        foreach (
$params as $i => $param) {
            
$newdeps = array();
            foreach (
$param->_downloadDeps as $dep) {
                
$merge array_merge($params$newparams);
                if (!
PEAR_Downloader_Package::willDownload($dep$merge)
                    && !
$param->isInstalled($dep)
                ) {
                    
$newdeps[] = $dep;
                } else {
                    
//var_dump($dep);
                    // detect versioning conflicts here
                
}
            }

            
// convert the dependencies into PEAR_Downloader_Package objects for the next time around
            
$params[$i]->_downloadDeps = array();
            foreach (
$newdeps as $dep) {
                
$obj = &new PEAR_Downloader_Package($params[$i]->getDownloader());
                if (
$s $params[$i]->explicitState()) {
                    
$obj->setExplicitState($s);
                }

                
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
                
$e $obj->fromDepURL($dep);
                
PEAR::popErrorHandling();
                if (
PEAR::isError($e)) {
                    if (!isset(
$options['soft'])) {
                        
$obj->_downloader->log(0$e->getMessage());
                    }
                    continue;
                }

                
$e $obj->detectDependencies($params);
                if (
PEAR::isError($e)) {
                    if (!isset(
$options['soft'])) {
                        
$obj->_downloader->log(0$e->getMessage());
                    }
                }

                
$j = &$obj;
                
$newparams[] = &$j;
            }
        }

        if (
count($newparams)) {
            foreach (
$newparams as $i => $unused) {
                
$params[] = &$newparams[$i];
            }
            return 
true;
        }

        return 
false;
    }


    
/**
     * @static
     */
    
function willDownload($param$params)
    {
        if (!
is_array($params)) {
            return 
false;
        }

        foreach (
$params as $obj) {
            if (
$obj->isEqual($param)) {
                return 
true;
            }
        }

        return 
false;
    }

    
/**
     * For simpler unit-testing
     * @param PEAR_Config
     * @param int
     * @param string
     */
    
function &getPackagefileObject(&$c$d)
    {
        
$a = &new PEAR_PackageFile($c$d);
        return 
$a;
    }

    
/**
     * This will retrieve from a local file if possible, and parse out
     * a group name as well.  The original parameter will be modified to reflect this.
     * @param string|array can be a parsed package name as well
     * @access private
     */
    
function _fromFile(&$param)
    {
        
$saveparam $param;
        if (
is_string($param)) {
            if (!@
file_exists($param)) {
                
$test explode('#'$param);
                
$group array_pop($test);
                if (@
file_exists(implode('#'$test))) {
                    
$this->setGroup($group);
                    
$param implode('#'$test);
                    
$this->_explicitGroup true;
                }
            }

            if (@
is_file($param)) {
                
$this->_type 'local';
                
$options $this->_downloader->getOptions();
                
$pkg = &$this->getPackagefileObject($this->_config$this->_downloader->_debug);
                
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
                
$pf = &$pkg->fromAnyFile($paramPEAR_VALIDATE_INSTALLING);
                
PEAR::popErrorHandling();
                if (
PEAR::isError($pf)) {
                    
$this->_valid false;
                    
$param $saveparam;
                    return 
$pf;
                }
                
$this->_packagefile = &$pf;
                if (!
$this->getGroup()) {
                    
$this->setGroup('default'); // install the default dependency group
                
}
                return 
$this->_valid true;
            }
        }
        
$param $saveparam;
        return 
$this->_valid false;
    }

    function 
_fromUrl($param$saveparam '')
    {
        if (!
is_array($param) && (preg_match('#^(http|https|ftp)://#'$param))) {
            
$options $this->_downloader->getOptions();
            
$this->_type 'url';
            
$callback $this->_downloader->ui ?
                array(&
$this->_downloader'_downloadCallback') : null;
            
$this->_downloader->pushErrorHandling(PEAR_ERROR_RETURN);
            if (
PEAR::isError($dir $this->_downloader->getDownloadDir())) {
                
$this->_downloader->popErrorHandling();
                return 
$dir;
            }

            
$this->_downloader->log(3'Downloading "' $param '"');
            
$file $this->_downloader->downloadHttp($param$this->_downloader->ui,
                
$dir$callbacknullfalse$this->getChannel());
            
$this->_downloader->popErrorHandling();
            if (
PEAR::isError($file)) {
                if (!empty(
$saveparam)) {
                    
$saveparam ", cannot download "$saveparam"";
                }
                
$err PEAR::raiseError('Could not download from "' $param .
                    
'"' $saveparam ' (' $file->getMessage() . ')');
                    return 
$err;
            }

            if (
$this->_rawpackagefile) {
                require_once 
'Archive/Tar.php';
                
$tar = &new Archive_Tar($file);
                
$packagexml $tar->extractInString('package2.xml');
                if (!
$packagexml) {
                    
$packagexml $tar->extractInString('package.xml');
                }

                if (
str_replace(array("n""r"), array('',''), $packagexml) !=
                      
str_replace(array("n""r"), array('',''), $this->_rawpackagefile)) {
                    if (
$this->getChannel() != 'pear.php.net') {
                        return 
PEAR::raiseError('CRITICAL ERROR: package.xml downloaded does ' .
                            
'not match value returned from xml-rpc');
                    }

                    
// be more lax for the existing PEAR packages that have not-ok
                    // characters in their package.xml
                    
$this->_downloader->log(0'CRITICAL WARNING: The "' .
                        
$this->getPackage() . '" package has invalid characters in its ' .
                        
'package.xml.  The next version of PEAR may not be able to install ' .
                        
'this package for security reasons.  Please open a bug report at ' .
                        
'http://pear.php.net/package/' $this->getPackage() . '/bugs');
                }
            }

            
// whew, download worked!
            
$pkg = &$this->getPackagefileObject($this->_config$this->_downloader->debug);

            
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
            
$pf = &$pkg->fromAnyFile($filePEAR_VALIDATE_INSTALLING);
            
PEAR::popErrorHandling();
            if (
PEAR::isError($pf)) {
                if (
is_array($pf->getUserInfo())) {
                    foreach (
$pf->getUserInfo() as $err) {
                        if (
is_array($err)) {
                            
$err $err['message'];
                        }

                        if (!isset(
$options['soft'])) {
                            
$this->_downloader->log(0"Validation Error: $err");
                        }
                    }
                }

                if (!isset(
$options['soft'])) {
                    
$this->_downloader->log(0$pf->getMessage());
                }

                
///FIXME need to pass back some error code that we can use to match with to cancel all further operations
                /// At least stop all deps of this package from being installed
                
$out $saveparam $saveparam $param;
                
$err PEAR::raiseError('Download of "' $out '" succeeded, but it is not a valid package archive');
                
$this->_valid false;
                return 
$err;
            }

            
$this->_packagefile = &$pf;
            
$this->setGroup('default'); // install the default dependency group
            
return $this->_valid true;
        }

        return 
$this->_valid false;
    }

    
/**
     *
     * @param string|array pass in an array of format
     *                     array(
     *                      'package' => 'pname',
     *                     ['channel' => 'channame',]
     *                     ['version' => 'version',]
     *                     ['state' => 'state',])
     *                     or a string of format [channame/]pname[-version|-state]
     */
    
function _fromString($param)
    {
        
$options $this->_downloader->getOptions();
        
$channel $this->_config->get('default_channel');
        
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
        
$pname $this->_registry->parsePackageName($param$channel);
        
PEAR::popErrorHandling();
        if (
PEAR::isError($pname)) {
            if (
$pname->getCode() == 'invalid') {
                
$this->_valid false;
                return 
false;
            }

            if (
$pname->getCode() == 'channel') {
                
$parsed $pname->getUserInfo();
                if (
$this->_downloader->discover($parsed['channel'])) {
                    if (
$this->_config->get('auto_discover')) {
                        
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
                        
$pname $this->_registry->parsePackageName($param$channel);
                        
PEAR::popErrorHandling();
                    } else {
                        if (!isset(
$options['soft'])) {
                            
$this->_downloader->log(0'Channel "' $parsed['channel'] .
                                
'" is not initialized, use ' .
                                
'"pear channel-discover ' $parsed['channel'] . '" to initialize' .
                                
'or pear config-set auto_discover 1');
                        }
                    }
                }

                if (
PEAR::isError($pname)) {
                    if (!isset(
$options['soft'])) {
                        
$this->_downloader->log(0$pname->getMessage());
                    }

                    if (
is_array($param)) {
                        
$param $this->_registry->parsedPackageNameToString($param);
                    }

                    
$err PEAR::raiseError('invalid package name/package file "' $param '"');
                    
$this->_valid false;
                    return 
$err;
                }
            } else {
                if (!isset(
$options['soft'])) {
                    
$this->_downloader->log(0$pname->getMessage());
                }

                
$err PEAR::raiseError('invalid package name/package file "' $param '"');
                
$this->_valid false;
                return 
$err;
            }
        }

        if (!isset(
$this->_type)) {
            
$this->_type 'rest';
        }

        
$this->_parsedname    $pname;
        
$this->_explicitState = isset($pname['state']) ? $pname['state'] : false;
        
$this->_explicitGroup = isset($pname['group']) ? true false;

        
$info $this->_downloader->_getPackageDownloadUrl($pname);
        if (
PEAR::isError($info)) {
            if (
$info->getCode() != -976 && $pname['channel'] == 'pear.php.net') {
                
// try pecl
                
$pname['channel'] = 'pecl.php.net';
                if (
$test $this->_downloader->_getPackageDownloadUrl($pname)) {
                    if (!
PEAR::isError($test)) {
                        
$info PEAR::raiseError($info->getMessage() . ' - package ' .
                            
$this->_registry->parsedPackageNameToString($pnametrue) .
                            
' can be installed with "pecl install ' $pname['package'] .
                            
'"');
                    } else {
                        
$pname['channel'] = 'pear.php.net';
                    }
                } else {
                    
$pname['channel'] = 'pear.php.net';
                }
            }

            return 
$info;
        }

        
$this->_rawpackagefile $info['raw'];
        
$ret $this->_analyzeDownloadURL($info$param$pname);
        if (
PEAR::isError($ret)) {
            return 
$ret;
        }

        if (
$ret) {
            
$this->_downloadURL $ret;
            return 
$this->_valid = (bool) $ret;
        }
    }

    
/**
     * @param array output of package.getDownloadURL
     * @param string|array|object information for detecting packages to be downloaded, and
     *                            for errors
     * @param array name information of the package
     * @param array|null packages to be downloaded
     * @param bool is this an optional dependency?
     * @param bool is this any kind of dependency?
     * @access private
     */
    
function _analyzeDownloadURL($info$param$pname$params null$optional false,
                                 
$isdependency false)
    {
        if (!
is_string($param) && PEAR_Downloader_Package::willDownload($param$params)) {
            return 
false;
        }

        if (
$info === false) {
            
$saveparam = !is_string($param) ? ", cannot download "$param"" '';

            
// no releases exist
            
return PEAR::raiseError('No releases for package "' .
                
$this->_registry->parsedPackageNameToString($pnametrue) . '" exist' $saveparam);
        }

        if (
strtolower($info['info']->getChannel()) != strtolower($pname['channel'])) {
            
$err false;
            if (
$pname['channel'] == 'pecl.php.net') {
                if (
$info['info']->getChannel() != 'pear.php.net') {
                    
$err true;
                }
            } elseif (
$info['info']->getChannel() == 'pecl.php.net') {
                if (
$pname['channel'] != 'pear.php.net') {
                    
$err true;
                }
            } else {
                
$err true;
            }

            if (
$err) {
                return 
PEAR::raiseError('SECURITY ERROR: package in channel "' $pname['channel'] .
                    
'" retrieved another channel's name for download! ("' .
                    
$info['info']->getChannel() . '")');
            }
        }

        $preferred_state = $this->_config->get('
preferred_state');
        if (!isset($info['
url'])) {
            $package_version = $this->_registry->packageInfo($info['
info']->getPackage(),
            '
version', $info['info']->getChannel());
            if ($this->isInstalled($info)) {
                if ($isdependency && version_compare($info['
version'], $package_version, '<=')) {
                    // ignore bogus errors of "failed to download dependency"
                    // if it is already installed and the one that would be
                    // downloaded is older or the same version (Bug #7219)
                    return false;
                }
            }

            if ($info['
version'] === $package_version) {
                if (!isset($options['
soft'])) {
                    $this->_downloader->log(1, '
WARNINGfailed to download ' . $pname['channel'] .
                        '
/' . $pname['package'] . '-' . $package_version. 'additionally the suggested version' .
                        ' 
(' . $package_version . 'is the same as the locally installed one.');
                }

                return false;
            }

            if (version_compare($info['
version'], $package_version, '<=')) {
                if (!isset($options['
soft'])) {
                    $this->_downloader->log(1, '
WARNINGfailed to download ' . $pname['channel'] .
                        '
/' . $pname['package'] . '-' . $package_version . 'additionally the suggested version' .
                        ' 
(' . $info['version'] . 'is a lower version than the locally installed one (' . $package_version . ').');
                }

                return false;
            }

            $instead =  '
will instead download version ' . $info['version'] .
                        '
stability "' . $info['info']->getState() . '"';
            // releases exist, but we failed to get any
            if (isset($this->_downloader->_options['
force'])) {
                if (isset($pname['
version'])) {
                    $vs = '
version "' . $pname['version'] . '"';
                } elseif (isset($pname['
state'])) {
                    $vs = '
stability "' . $pname['state'] . '"';
                } elseif ($param == '
dependency') {
                    if (!class_exists('
PEAR_Common')) {
                        require_once '
PEAR/Common.php';
                    }

                    if (!in_array($info['
info']->getState(),
                          PEAR_Common::betterStates($preferred_state, true))) {
                        if ($optional) {
                            // don'
t spit out confusing error message
                            
return $this->_downloader->_getPackageDownloadUrl(
                                array(
'package' => $pname['package'],
                                      
'channel' => $pname['channel'],
                                      
'version' => $info['version']));
                        }
                        
$vs ' within preferred state "' $preferred_state .
                            
'"';
                    } else {
                        if (!
class_exists('PEAR_Dependency2')) {
                            require_once 
'PEAR/Dependency2.php';
                        }

                        if (
$optional) {
                            
// don't spit out confusing error message
                            
return $this->_downloader->_getPackageDownloadUrl(
                                array(
'package' => $pname['package'],
                                      
'channel' => $pname['channel'],
                                      
'version' => $info['version']));
                        }
                        
$vs PEAR_Dependency2::_getExtraString($pname);
                        
$instead '';
                    }
                } else {
                    
$vs ' within preferred state "' $preferred_state '"';
                }

                if (!isset(
$options['soft'])) {
                    
$this->_downloader->log(1'WARNING: failed to download ' $pname['channel'] .
                        
'/' $pname['package'] . $vs $instead);
                }

                
// download the latest release
                
return $this->_downloader->_getPackageDownloadUrl(
                    array(
'package' => $pname['package'],
                          
'channel' => $pname['channel'],
                          
'version' => $info['version']));
            } else {
                if (isset(
$info['php']) && $info['php']) {
                    
$err PEAR::raiseError('Failed to download ' .
                        
$this->_registry->parsedPackageNameToString(
                            array(
'channel' => $pname['channel'],
                                  
'package' => $pname['package']),
                                
true) .
                        
', latest release is version ' $info['php']['v'] .
                        
', but it requires PHP version "' .
                        
$info['php']['m'] . '", use "' .
                        
$this->_registry->parsedPackageNameToString(
                            array(
'channel' => $pname['channel'], 'package' => $pname['package'],
                            
'version' => $info['php']['v'])) . '" to install',
                            
PEAR_DOWNLOADER_PACKAGE_PHPVERSION);
                    return 
$err;
                }

                
// construct helpful error message
                
if (isset($pname['version'])) {
                    
$vs ', version "' $pname['version'] . '"';
                } elseif (isset(
$pname['state'])) {
                    
$vs ', stability "' $pname['state'] . '"';
                } elseif (
$param == 'dependency') {
                    if (!
class_exists('PEAR_Common')) {
                        require_once 
'PEAR/Common.php';
                    }

                    if (!
in_array($info['info']->getState(),
                          
PEAR_Common::betterStates($preferred_statetrue))) {
                        if (
$optional) {
                            
// don't spit out confusing error message, and don't die on
                            // optional dep failure!
                            
return $this->_downloader->_getPackageDownloadUrl(
                                array(
'package' => $pname['package'],
                                      
'channel' => $pname['channel'],
                                      
'version' => $info['version']));
                        }
                        
$vs ' within preferred state "' $preferred_state '"';
                    } else {
                        if (!
class_exists('PEAR_Dependency2')) {
                            require_once 
'PEAR/Dependency2.php';
                        }

                        if (
$optional) {
                            
// don't spit out confusing error message, and don't die on
                            // optional dep failure!
                            
return $this->_downloader->_getPackageDownloadUrl(
                                array(
'package' => $pname['package'],
                                      
'channel' => $pname['channel'],
                                      
'version' => $info['version']));
                        }
                        
$vs PEAR_Dependency2::_getExtraString($pname);
                    }
                } else {
                    
$vs ' within preferred state "' $this->_downloader->config->get('preferred_state') . '"';
                }

                
$options $this->_downloader->getOptions();
                
// this is only set by the "download-all" command
                
if (isset($options['ignorepreferred_state'])) {
                    
$err PEAR::raiseError(
                        
'Failed to download ' $this->_registry->parsedPackageNameToString(
                            array(
'channel' => $pname['channel'], 'package' => $pname['package']),
                                
true)
                         . 
$vs .
                        
', latest release is version ' $info['version'] .
                        
', stability "' $info['info']->getState() . '", use "' .
                        
$this->_registry->parsedPackageNameToString(
                            array(
'channel' => $pname['channel'], 'package' => $pname['package'],
                            
'version' => $info['version'])) . '" to install',
                            
PEAR_DOWNLOADER_PACKAGE_STATE);
                    return 
$err;
                }

                
// Checks if the user has a package installed already and checks the release against
                // the state against the installed package, this allows upgrades for packages
                // with lower stability than the preferred_state
                
$stability $this->_registry->packageInfo($pname['package'], 'stability'$pname['channel']);
                if (!
$this->isInstalled($info)
                    || !
in_array($info['info']->getState(), PEAR_Common::betterStates($stability['release'], true))
                ) {
                    
$err PEAR::raiseError(
                        
'Failed to download ' $this->_registry->parsedPackageNameToString(
                            array(
'channel' => $pname['channel'], 'package' => $pname['package']),
                                
true)
                         . 
$vs .
                        
', latest release is version ' $info['version'] .
                        
', stability "' $info['info']->getState() . '", use "' .
                        
$this->_registry->parsedPackageNameToString(
                            array(
'channel' => $pname['channel'], 'package' => $pname['package'],
                            
'version' => $info['version'])) . '" to install');
                    return 
$err;
                }
            }
        }

        if (isset(
$info['deprecated']) && $info['deprecated']) {
            
$this->_downloader->log(0,
                
'WARNING: "' .
                    
$this->_registry->parsedPackageNameToString(
                            array(
'channel' => $info['info']->getChannel(),
                                  
'package' => $info['info']->getPackage()), true) .
                
'" is deprecated in favor of "' .
                    
$this->_registry->parsedPackageNameToString($info['deprecated'], true) .
                
'"');
        }

        return 
$info;
    }
}
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