Merge pull request #81 from GromNaN/zipball

Add zipball and tarball download (fix #66)

controllers/archiveController.php

@@ -0,0 +1,32 @@
+<?php
+
+use Symfony\Component\HttpFoundation\StreamedResponse;
+
+$app->get('{repo}/{format}ball/{branch}', function($repo, $format, $branch) use($app) {
+    $repository = $app['git']->getRepository($app['git.repos'] . $repo);
+    $tree = $repository->getBranchTree($branch);
+
+    if (false === $tree) {
+        return $app->abort(404, 'Invalid commit or tree reference: '.$branch);
+    }
+
+    $file = $app['cache.archives'].DIRECTORY_SEPARATOR.$repo.DIRECTORY_SEPARATOR.substr($tree, 0, 2).DIRECTORY_SEPARATOR.substr($tree, 2).'.'.$format;
+
+    if (!file_exists($file)) {
+        $repository->createArchive($tree, $file, $format);
+    }
+
+    return new StreamedResponse(function () use($file) {
+        readfile($file);
+    }, 200, array(
+        'Content-type' => ('zip' === $format) ? 'application/zip' : 'application/x-tar',
+        'Content-Description' => 'File Transfer',
+        'Content-Disposition' => 'attachment; filename="'.$repo.'-'.substr($tree, 0, 6).'.'.$format.'"',
+        'Content-Transfer-Encoding' => 'binary',
+        'Content-Length' => filesize($file),
+    ));
+})->assert('format', '(zip|tar)')
+  ->assert('repo', '[\w-._]+')
+  ->assert('branch', '[\w-._]+')
+  ->value('format', 'zip')
+  ->bind('archive');

index.php

@@ -23,6 +23,8 @@ $app['filetypes'] = $config['filetypes'];
 $app['hidden'] = isset($config['git']['hidden']) ? $config['git']['hidden'] : array();
 $config['git']['repositories'] = rtrim($config['git']['repositories'], DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
 
+$app['cache.archives'] = __DIR__.DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR.'archives';
+
 // Register Git and Twig service providersclass_path
 $app->register(new Silex\Provider\TwigServiceProvider(), array(
     'twig.path'       => __DIR__.'/views',
@@ -43,6 +45,7 @@ $app['twig'] = $app->share($app->extend('twig', function($twig, $app) {
 }));
 
 // Load controllers
+include 'controllers/archiveController.php';
 include 'controllers/indexController.php';
 include 'controllers/treeController.php';
 include 'controllers/blobController.php';

lib/Git/Repository.php

@@ -472,6 +472,37 @@ class Repository
         return $data;
     }
 
+    /**
+     * Extract the tree hash for a given branch or tree reference
+     *
+     * @param string $branch
+     * @return string
+     */
+    public function getBranchTree($branch)
+    {
+        $hash = $this->getClient()->run($this, "log --pretty='%T' --max-count=1 $refspec");
+
+        $hash = trim($hash, "\r\n ");
+
+        return $hash ? : false;
+    }
+
+    /**
+     * Create a TAR or ZIP archive of a git tree
+     *
+     * @param string $tree   Tree-ish reference
+     * @param string $output Output File name
+     * @param string $format Archive format
+     */
+    public function createArchive($tree, $output, $format = 'zip')
+    {
+        if (!file_exists($dir = dirname($output)) && !@mkdir($dir, 0777, true)) {
+            throw new \RuntimeException("Unable to create directory $dir");
+        }
+
+        $this->getClient()->run($this, "archive --format=$format --output=$output $tree");
+    }
+
     /**
      * Get the Tree for the provided folder
      * 

views/tree.twig

@@ -8,6 +8,11 @@
     {% embed 'breadcrumb.twig' with {breadcrumbs: breadcrumbs} %}
         {% block extra %}
             <a href="{{ path('rss', {repo: repo, branch: branch}) }}"><i class="rss pull-right"></i></a>
+            <div class="btn-group pull-right">
+                <a href="{{ path('archive', {repo: repo, branch: branch, format: 'zip'}) }}" class="btn btn-mini" title="Download ZIP archive">ZIP</a>
+                <a href="{{ path('archive', {repo: repo, branch: branch, format: 'tar'}) }}" class="btn btn-mini" title="Download TAR archive">TAR</a>
+                &nbsp;
+            </div>
         {% endblock %}
     {% endembed %}