Added ZipDownloader.

src/Composer/Downloader/ZipDownloader.php

@@ -0,0 +1,60 @@
+<?php
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer\Downloader;
+
+use Composer\Package\PackageInterface;
+
+/**
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ */
+class ZipDownloader
+{
+    public function download(PackageInterface $package, $path)
+    {
+        $tmpName = tempnam(sys_get_temp_dir(), '');
+        $this->downloadFile($package->getSourceUrl(), $tmpName);
+
+        if (!file_exists($tmpName)) {
+            throw new \UnexpectedValueException($tmpName.' could not be created.');
+        }
+
+        $zipArchive = new ZipArchive();
+
+        if($zipArchive->open($tmpName) !== TRUE) {
+            $zipArchive->extractTo($path.'/'.$package->getName());
+            $zipArchive->close();
+        }
+        else {
+            throw new \UnexpectedValueException($tmpName.'is not a valid zip archive');
+        }
+    }
+
+    protected function downloadFile ($url, $path)
+    {
+        $file = fopen ($url, "rb");
+        if ($file) {
+            $newf = fopen ($path, "wb");
+            if ($newf) {
+                while(!feof($file)) {
+                    fwrite($newf, fread($file, 1024 * 8 ), 1024 * 8 );
+                }
+            }
+        }
+        if ($file) {
+            fclose($file);
+        }
+        if ($newf) {
+            fclose($newf);
+        }
+    }
+}