Rewrite PearRepository to implement PEAR Client/Server protocol itself, taking longer then pear remote-list, but at least showing ALL available versions, making arbitrary dependencies possible.

src/Composer/Downloader/AbstractDownloader.php

@@ -20,7 +20,7 @@ use Composer\Package\PackageInterface;
  */
 abstract class AbstractDownloader
 {
-    protected function downloadFile ($url, $path)
+    protected function downloadFile($url, $path)
     {
         $file = fopen($url, "rb");
         if ($file) {
@@ -29,13 +29,9 @@ abstract class AbstractDownloader
                 while (!feof($file)) {
                     fwrite($newf, fread($file, 1024 * 8), 1024 * 8);
                 }
+                fclose($newf);
             }
-        }
-        if ($file) {
             fclose($file);
         }
-        if ($newf) {
-            fclose($newf);
-        }
     }
 }

src/Composer/Downloader/PearDownloader.php

@@ -30,7 +30,7 @@ class PearDownloader extends AbstractDownloader
                 throw new \UnexpectedValueException($path.' does not exist and could not be created.');
             }
         }
-        
+
         $tmpName = tempnam(sys_get_temp_dir(), '');
         $this->downloadFile($package->getSourceUrl(), $tmpName);
 

src/Composer/Repository/PearRepository.php

@@ -25,52 +25,92 @@ class PearRepository extends ArrayRepository
     private $name;
     private $url;
 
-    public function __construct($url, $name)
+    public function __construct($url)
     {
         $this->url = $url;
-        $this->name = $name;
-        
+
         if (!filter_var($this->url, FILTER_VALIDATE_URL)) {
             throw new \UnexpectedValueException("Invalid url given for PEAR repository " . $name);
         }
     }
+
+    /**
+     * @param  string $url
+     * @return DOMDocument
+     */
+    private function requestXml($url)
+    {
+        $content = file_get_contents($url);
+        $dom = new \DOMDocument('1.0', 'UTF-8');
+        $dom->loadXML($content);
+
+        return $dom;
+    }
     
     protected function initialize()
     {
         parent::initialize();
-        
-        exec("pear remote-list -c ".escapeshellarg($this->name), $output, $return);
-        
-        if ($return != 0) {
-            throw new \BadMethodCallException("Could not execute pear channel-list, an error occured.");
+
+        set_error_handler(function($severity, $message, $file, $line) {
+            throw new ErrorException($message, $severity, $severity, $file, $line);
+        });
+        try {
+            $this->fetchFromServer();
+        } catch(ErrorException $e) {
+
         }
-        
-        $headersDone = false;
-        foreach ($output AS $line) {
-            $parts = explode(" ", preg_replace('(\s{2,})', ' ', trim($line)));
-            if (count($parts) != 2) {
-                continue;
-            }
-            list($packageName, $pearVersion) = $parts;
-            
-            if (!$headersDone) {
-                if ($packageName == "PACKAGE" && $pearVersion == "VERSION") {
-                    $headersDone = true;
+        restore_error_handler();
+    }
+
+    protected function fetchFromServer()
+    {
+        $categoryXML = $this->requestXml($this->url . "/rest/c/categories.xml");
+        $categories = $categoryXML->getElementsByTagName("c");
+
+        foreach ($categories as $category) {
+            $categoryLink = $category->getAttribute("xlink:href");
+            $categoryLink = str_replace("info.xml", "packages.xml", $categoryLink);
+            $packagesXML = $this->requestXml($this->url . $categoryLink);
+
+            $packages = $packagesXML->getElementsByTagName('p');
+            foreach ($packages as $package) {
+                $packageName = $package->nodeValue;
+
+                $packageLink = $package->getAttribute('xlink:href');
+                $releaseLink = $this->url . str_replace("/rest/p/", "/rest/r/", $packageLink);
+                $allReleasesLink = $releaseLink . "/allreleases2.xml";
+                $releasesXML = $this->requestXml($allReleasesLink);
+                
+                $releases = $releasesXML->getElementsByTagName('r');
+
+                foreach ($releases as $release) {
+                    /* @var $release DOMElement */
+                    $pearVersion = $release->getElementsByTagName('v')->item(0)->nodeValue;
+
+                    $version = BasePackage::parseVersion($pearVersion);
+
+                    $package = new MemoryPackage($packageName, $version['version'], $version['type']);
+                    $package->setSourceType('pear');
+                    $package->setSourceUrl($this->url.'/get/'.$packageName.'-'.$pearVersion.".tgz");
+
+                    $depsLink = $releaseLink . "/deps.".$pearVersion.".txt";
+                    $deps = file_get_contents($depsLink);
+                    if (preg_match('((O:([0-9])+:"([^"]+)"))', $deps, $matches)) {
+                        if (strlen($matches[3]) == $matches[2]) {
+                            throw new \InvalidArgumentException("Invalid dependency data, it contains serialized objects.");
+                        }
+                    }
+                    $deps = unserialize($deps);
+                    if (isset($deps['required']['package'])) {
+                        foreach ($deps['required']['package'] as $dependency) {
+                            $requires[$dependency['name']] = $dependency['min'];
+                        }
+                        $package->setRequires($requires);
+                    }
+
+                    $this->addPackage($package);
                 }
-                continue;
-            }
-            
-            if ($pearVersion == "-n/a-") {
-                continue; // Preferred stability is set to a level that this package can't fullfil.
             }
-            
-            $version = BasePackage::parseVersion($pearVersion);
-
-            $package = new MemoryPackage($packageName, $version['version'], $version['type']);
-            $package->setSourceType('pear');
-            $package->setSourceUrl($this->url.'/get/'.$packageName.'-'.$pearVersion.".tgz");
-            
-            $this->addPackage($package);
         }
     }
 }