Support empty directories with tar-files, closes #5206

- Report: #5206

- Ref: 8389b4b

src/Composer/Package/Archiver/ArchivableFilesFilter.php

@@ -0,0 +1,44 @@
+<?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\Package\Archiver;
+
+use FilterIterator;
+use PharData;
+
+class ArchivableFilesFilter extends FilterIterator
+{
+    private $dirs = array();
+
+    /**
+     * @return bool true if the current element is acceptable, otherwise false.
+     */
+    public function accept()
+    {
+        $file = $this->getInnerIterator()->current();
+        if ($file->isDir()) {
+            $this->dirs[] = (string)$file;
+
+            return false;
+        }
+
+        return true;
+    }
+
+    public function addEmptyDir(PharData $phar, $sources)
+    {
+        foreach ($this->dirs as $filepath) {
+            $localname = str_replace($sources . "/", '', $filepath);
+            $phar->addEmptyDir($localname);
+        }
+    }
+}

src/Composer/Package/Archiver/PharArchiver.php

@@ -54,7 +54,9 @@ class PharArchiver implements ArchiverInterface
 
             $phar = new \PharData($target, null, null, static::$formats[$format]);
             $files = new ArchivableFilesFinder($sources, $excludes);
-            $phar->buildFromIterator($files, $sources);
+            $filesOnly = new ArchivableFilesFilter($files);
+            $phar->buildFromIterator($filesOnly, $sources);
+            $filesOnly->addEmptyDir($phar, $sources);
 
             if (isset(static::$compressFormats[$format])) {
                 // Check can be compressed?