PlatformRepository now knows curl and libxml versions

src/Composer/Repository/PlatformRepository.php

@@ -40,11 +40,43 @@ class PlatformRepository extends ArrayRepository
         parent::addPackage($php);
 
         foreach (get_loaded_extensions() as $name) {
-            if (in_array($name, array('standard', 'Core'))) {
+            switch ($name) {
+                // Skipped "extensions"
+                case 'standard':
+                case 'Core':
                     continue;
+                
+                // Curl exposes its version by the curl_version function
+                case 'curl':
+                    $curlversion = curl_version();
+                    $prettyVersion = $curlversion['version'];
+                    
+                    try {
+                        $version = $versionParser->normalize($prettyVersion);
+                    } catch (\UnexpectedValueException $e) {
+                        $prettyVersion = '0';
+                        $version = $versionParser->normalize($prettyVersion);
                     }
                     
+                    break;
+                    
+                    
+                case 'libxml':
+                    $prettyVersion = LIBXML_DOTTED_VERSION;
+                    
+                    try {
+                        $version = $versionParser->normalize($prettyVersion);
+                    } catch (\UnexpectedValueException $e) {
+                        $prettyVersion = '0';
+                        $version = $versionParser->normalize($prettyVersion);
+                    }
+                    
+                    break;
+                    
+                // All normal cases for standard extensions    
+                default:
                     $reflExt = new \ReflectionExtension($name);
+                    
                     try {
                         $prettyVersion = $reflExt->getVersion();
                         $version = $versionParser->normalize($prettyVersion);
@@ -53,6 +85,9 @@ class PlatformRepository extends ArrayRepository
                         $version = $versionParser->normalize($prettyVersion);
                     }
                     
+                    break;
+            }
+
             $ext = new MemoryPackage('ext-'.$name, $version, $prettyVersion);
             $ext->setDescription('The '.$name.' PHP extension');
             parent::addPackage($ext);