downloader.php

php-4.4.7学习linux时下载的源代码

        PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
        $err = $this->analyzeDependencies($params);
        PEAR::popErrorHandling();
        if (!count($params)) {
            $this->pushError('No valid packages found', PEAR_INSTALLER_FAILED);
            $a = array();
            return $a;
        }
        $ret = array();
        $newparams = array();
        if (isset($this->_options['pretend'])) {
            return $params;
        }
        foreach ($params as $i => $package) {
            PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
            $pf = &$params[$i]->download();
            PEAR::staticPopErrorHandling();
            if (PEAR::isError($pf)) {
                if (!isset($this->_options['soft'])) {
                    $this->log(1, $pf->getMessage());
                    $this->log(0, 'Error: cannot download "' .
                        $this->_registry->parsedPackageNameToString($package->getParsedPackage(),
                            true) .
                        '"');
                }
                continue;
            }
            $newparams[] = &$params[$i];
            $ret[] = array('file' => $pf->getArchiveFile(),
                                   'info' => &$pf,
                                   'pkg' => $pf->getPackage());
        }
        $this->_downloadedPackages = $ret;
        return $newparams;
    }

    /**
     * @param array all packages to be installed
     */
    function analyzeDependencies(&$params)
    {
        $hasfailed = $failed = false;
        if (isset($this->_options['downloadonly'])) {
            return;
        }
        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
        $redo = true;
        $reset = false;
        while ($redo) {
            $redo = false;
            foreach ($params as $i => $param) {
                $deps = $param->getDeps();
                if (!$deps) {
                    $depchecker = &$this->getDependency2Object($this->config, $this->getOptions(),
                        $param->getParsedPackage(), PEAR_VALIDATE_DOWNLOADING);
                    if ($param->getType() == 'xmlrpc') {
                        $send = $param->getDownloadURL();
                    } else {
                        $send = $param->getPackageFile();
                    }
                    $installcheck = $depchecker->validatePackage($send, $this, $params);
                    if (PEAR::isError($installcheck)) {
                        if (!isset($this->_options['soft'])) {
                            $this->log(0, $installcheck->getMessage());
                        }
                        $hasfailed = true;
                        $params[$i] = false;
                        $reset = true;
                        $redo = true;
                        $failed = false;
                        PEAR_Downloader_Package::removeDuplicates($params);
                        continue 2;
                    }
                    continue;
                }
                if (!$reset && $param->alreadyValidated()) {
                    continue;
                }
                if (count($deps)) {
                    $depchecker = &$this->getDependency2Object($this->config, $this->getOptions(),
                        $param->getParsedPackage(), PEAR_VALIDATE_DOWNLOADING);
                    if ($param->getType() == 'xmlrpc') {
                        $send = $param->getDownloadURL();
                    } else {
                        $send = $param->getPackageFile();
                    }
                    $installcheck = $depchecker->validatePackage($send, $this, $params);
                    if (PEAR::isError($installcheck)) {
                        if (!isset($this->_options['soft'])) {
                            $this->log(0, $installcheck->getMessage());
                        }
                        $hasfailed = true;
                        $params[$i] = false;
                        $reset = true;
                        $redo = true;
                        $failed = false;
                        PEAR_Downloader_Package::removeDuplicates($params);
                        continue 2;
                    }
                    $failed = false;
                    if (isset($deps['required'])) {
                        foreach ($deps['required'] as $type => $dep) {
                            // note: Dependency2 will never return a PEAR_Error if ignore-errors
                            // is specified, so soft is needed to turn off logging
                            if (!isset($dep[0])) {
                                if (PEAR::isError($e = $depchecker->{"validate{$type}Dependency"}($dep,
                                      true, $params))) {
                                    $failed = true;
                                    if (!isset($this->_options['soft'])) {
                                        $this->log(0, $e->getMessage());
                                    }
                                } elseif (is_array($e) && !$param->alreadyValidated()) {
                                    if (!isset($this->_options['soft'])) {
                                        $this->log(0, $e[0]);
                                    }
                                }
                            } else {
                                foreach ($dep as $d) {
                                    if (PEAR::isError($e =
                                          $depchecker->{"validate{$type}Dependency"}($d,
                                          true, $params))) {
                                        $failed = true;
                                        if (!isset($this->_options['soft'])) {
                                            $this->log(0, $e->getMessage());
                                        }
                                    } elseif (is_array($e) && !$param->alreadyValidated()) {
                                        if (!isset($this->_options['soft'])) {
                                            $this->log(0, $e[0]);
                                        }
                                    }
                                }
                            }
                        }
                        if (isset($deps['optional'])) {
                            foreach ($deps['optional'] as $type => $dep) {
                                if (!isset($dep[0])) {
                                    if (PEAR::isError($e =
                                          $depchecker->{"validate{$type}Dependency"}($dep,
                                          false, $params))) {
                                        $failed = true;
                                        if (!isset($this->_options['soft'])) {
                                            $this->log(0, $e->getMessage());
                                        }
                                    } elseif (is_array($e) && !$param->alreadyValidated()) {
                                        if (!isset($this->_options['soft'])) {
                                            $this->log(0, $e[0]);
                                        }
                                    }
                                } else {
                                    foreach ($dep as $d) {
                                        if (PEAR::isError($e =
                                              $depchecker->{"validate{$type}Dependency"}($d,
                                              false, $params))) {
                                            $failed = true;
                                            if (!isset($this->_options['soft'])) {
                                                $this->log(0, $e->getMessage());
                                            }
                                        } elseif (is_array($e) && !$param->alreadyValidated()) {
                                            if (!isset($this->_options['soft'])) {
                                                $this->log(0, $e[0]);
                                            }
                                        }
                                    }
                                }
                            }
                        }
                        $groupname = $param->getGroup();
                        if (isset($deps['group']) && $groupname) {
                            if (!isset($deps['group'][0])) {
                                $deps['group'] = array($deps['group']);
                            }
                            $found = false;
                            foreach ($deps['group'] as $group) {
                                if ($group['attribs']['name'] == $groupname) {
                                    $found = true;
                                    break;
                                }
                            }
                            if ($found) {
                                unset($group['attribs']);
                                foreach ($group as $type => $dep) {
                                    if (!isset($dep[0])) {
                                        if (PEAR::isError($e =
                                              $depchecker->{"validate{$type}Dependency"}($dep,
                                              false, $params))) {
                                            $failed = true;
                                            if (!isset($this->_options['soft'])) {
                                                $this->log(0, $e->getMessage());
                                            }
                                        } elseif (is_array($e) && !$param->alreadyValidated()) {
                                            if (!isset($this->_options['soft'])) {
                                                $this->log(0, $e[0]);
                                            }
                                        }
                                    } else {
                                        foreach ($dep as $d) {
                                            if (PEAR::isError($e =
                                                  $depchecker->{"validate{$type}Dependency"}($d,
                                                  false, $params))) {
                                                $failed = true;
                                                if (!isset($this->_options['soft'])) {
                                                    $this->log(0, $e->getMessage());
                                                }
                                            } elseif (is_array($e) && !$param->alreadyValidated()) {
                                                if (!isset($this->_options['soft'])) {
                                                    $this->log(0, $e[0]);
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    } else {
                        foreach ($deps as $dep) {
                            if (PEAR::isError($e = $depchecker->validateDependency1($dep, $params))) {
                                $failed = true;
                                if (!isset($this->_options['soft'])) {
                                    $this->log(0, $e->getMessage());
                                }
                            } elseif (is_array($e) && !$param->alreadyValidated()) {
                                if (!isset($this->_options['soft'])) {
                                    $this->log(0, $e[0]);
                                }
                            }
                        }
                    }
                    $params[$i]->setValidated();
                }
                if ($failed) {
                    $hasfailed = true;
                    $params[$i] = false;
                    $reset = true;
                    $redo = true;
                    $failed = false;
                    PEAR_Downloader_Package::removeDuplicates($params);
                    continue 2;
                }
            }
        }
        PEAR::staticPopErrorHandling();
        if ($hasfailed && (isset($this->_options['ignore-errors']) ||
              isset($this->_options['nodeps']))) {
            // this is probably not needed, but just in case
            if (!isset($this->_options['soft'])) {
                $this->log(0, 'WARNING: dependencies failed');
            }
        }
    }

    /**
     * Retrieve the directory that downloads will happen in
     * @access private
     * @return string
     */
    function getDownloadDir()
    {
        if (isset($this->_downloadDir)) {
            return $this->_downloadDir;
        }
        $downloaddir = $this->config->get('download_dir');
        if (empty($downloaddir)) {
            if (!class_exists('System')) {
                require_once 'System.php';
            }
            if (PEAR::isError($downloaddir = System::mktemp('-d'))) {
                return $downloaddir;
            }
            $this->log(3, '+ tmp dir created at ' . $downloaddir);
        }
        return $this->_downloadDir = $downloaddir;
    }

    function setDownloadDir($dir)
    {
        $this->_downloadDir = $dir;
    }

    // }}}
    // {{{ configSet()
    function configSet($key, $value, $layer = 'user', $channel = false)
    {
        $this->config->set($key, $value, $layer, $channel);
        $this->_preferredState = $this->config->get('preferred_state', null, $channel);
        if (!$this->_preferredState) {
            // don't inadvertantly use a non-set preferred_state
            $this->_preferredState = null;
        }
    }

    // }}}
    // {{{ setOptions()
    function setOptions($options)
    {
        $this->_options = $options;
    }

    // }}}
    // {{{ setOptions()
    function getOptions()
    {
        return $this->_options;
    }

    // }}}

    /**
     * For simpler unit-testing
     * @param PEAR_Config
     * @param int
     * @param string
     */
    function &getPackagefileObject(&$c, $d, $t = false)
    {
        if (!class_exists('PEAR_PackageFile')) {
            require_once 'PEAR/PackageFile.php';
        }
        $a = &new PEAR_PackageFile($c, $d, $t);
        return $a;
    }

    // {{{ _getPackageDownloadUrl()

    /**
     * @param array output of {@link parsePackageName()}
     * @access private
     */
    function _getPackageDownloadUrl($parr)
    {
        $curchannel = $this->config->get('default_channel');
        $this->configSet('default_channel', $parr['channel']);
        // getDownloadURL returns an array.  On error, it only contains information
        // on the latest release as array(version, info).  On success it contains
        // array(version, info, download url string)
        $state = isset($parr['state']) ? $parr['state'] : $this->config->get('preferred_state');
        if (!$this->_registry->channelExists($parr['channel'])) {
            do {
                if ($this->config->get('auto_discover')) {
                    if ($this->discover($parr['channel'])) {
                        break;
                    }
                }
                $this->configSet('default_channel', $curchannel);
                return PEAR::raiseError('Unknown remote channel: ' . $remotechannel);
            } while (false);
        }
        $chan = &$this->_registry->getChannel($parr['channel']);
        if (PEAR::isError($chan)) {
            return $chan;
        }
        $version = $this->_registry->packageInfo($parr['package'], 'version',
            $parr['channel']);
        if ($chan->supportsREST($this->config->get('preferred_mirror')) &&
              $base = $chan->getBaseURL('REST1.0', $this->config->get('preferred_mirror'))) {
            $rest = &$this->config->getREST('1.0', $this->_options);
            if (!isset($parr['version']) && !isset($parr['state']) && $version
                  && !isset($this->_options['downloadonly'])) {
                $url = $rest->getDownloadURL($base, $parr, $state, $version);
            } else {
                $url = $rest->getDownloadURL($base, $parr, $state, false);
            }
            if (PEAR::isError($url)) {
                $this->configSet('default_channel', $curchannel);
                return $url;
            }
            if ($parr['channel'] != $curchannel) {
                $this->configSet('default_channel', $curchannel);
            }
            if (!is_array($url)) {
                return $url;
            }
            $url['raw'] = false; // no checking is necessary for REST
            if (!is_array($url['info'])) {
                return PEAR::raiseError('Invalid remote dependencies retrieved from REST - ' .
                    'this should never happen');
            }
            if (isset($url['info']['required']) || $url['compatible']) {
                require_once 'PEAR/PackageFile/v2.php';