From 3811fe7d8b30c21ffcb401eb1bc9e1d2749cb794 Mon Sep 17 00:00:00 2001
From: Pavel Puchkin <i@neoascetic.me>
Date: Wed, 26 Feb 2014 21:23:15 +1100
Subject: [PATCH] Resolves #2521. First and simple attempt to make a gzip
 downloader

---
 src/Composer/Downloader/GzipDownloader.php | 53 ++++++++++++++++++++++
 src/Composer/Factory.php                   |  1 +
 2 files changed, 54 insertions(+)
 create mode 100644 src/Composer/Downloader/GzipDownloader.php

diff --git a/src/Composer/Downloader/GzipDownloader.php b/src/Composer/Downloader/GzipDownloader.php
new file mode 100644
index 000000000..6736c9cc1
--- /dev/null
+++ b/src/Composer/Downloader/GzipDownloader.php
@@ -0,0 +1,53 @@
+<?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\Config;
+use Composer\Cache;
+use Composer\EventDispatcher\EventDispatcher;
+use Composer\Util\ProcessExecutor;
+use Composer\IO\IOInterface;
+
+/**
+ * GZip archive downloader.
+ *
+ * @author Pavel Puchkin <i@neoascetic.me>
+ */
+class GzipDownloader extends ArchiveDownloader
+{
+    protected $process;
+
+    public function __construct(IOInterface $io, Config $config, EventDispatcher $eventDispatcher = null, Cache $cache = null, ProcessExecutor $process = null)
+    {
+        $this->process = $process ?: new ProcessExecutor($io);
+        parent::__construct($io, $config, $eventDispatcher, $cache);
+    }
+
+    protected function extract($file, $path)
+    {
+        $processError = null;
+
+        // Try to use gunzip on *nix
+        if (!defined('PHP_WINDOWS_VERSION_BUILD')) {
+            $targetDirectory = $path . DIRECTORY_SEPARATOR . basename($file);
+            $command = 'gzip -d < ' . escapeshellarg($file) . ' > ' . escapeshellarg($targetDirectory);
+
+            if (0 === $this->process->execute($command, $ignoredOutput)) {
+                return;
+            }
+
+            $processError = 'Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput();
+        }
+    }
+}
+
diff --git a/src/Composer/Factory.php b/src/Composer/Factory.php
index 27f83dd87..d0cd68b79 100644
--- a/src/Composer/Factory.php
+++ b/src/Composer/Factory.php
@@ -365,6 +365,7 @@ class Factory
         $dm->setDownloader('zip', new Downloader\ZipDownloader($io, $config, $eventDispatcher, $cache));
         $dm->setDownloader('rar', new Downloader\RarDownloader($io, $config, $eventDispatcher, $cache));
         $dm->setDownloader('tar', new Downloader\TarDownloader($io, $config, $eventDispatcher, $cache));
+        $dm->setDownloader('gzip', new Downloader\GzipDownloader($io, $config, $eventDispatcher, $cache));
         $dm->setDownloader('phar', new Downloader\PharDownloader($io, $config, $eventDispatcher, $cache));
         $dm->setDownloader('file', new Downloader\FileDownloader($io, $config, $eventDispatcher, $cache));