solves #146

Author: David Verholen

src/MagentoHackathon/Composer/Magento/Installer/MagentoInstallerAbstract.php

@@ -604,41 +604,54 @@ public function annoy(IOInterface $io)
     }
 
     /**
-     * join 2 paths
+     * joinFilePath
      *
-     * @param        $path1
-     * @param        $path2
-     * @param        $delimiter
-     * @param bool   $prependDelimiter
-     * @param string $additionalPrefix
+     * joins 2 Filepaths and replaces the Directory Separators
+     * with the Systems Directory Separator
      *
-     * @internal param $url1
-     * @internal param $url2
+     * @param $path1
+     * @param $path2
      *
      * @return string
      */
-    protected function joinPath($path1, $path2, $delimiter, $prependDelimiter = false, $additionalPrefix = '')
+    public function joinFilePath($path1, $path2)
     {
-        $prefix = $additionalPrefix . $prependDelimiter ? $delimiter : '';
-
-        return $prefix . join(
-            $delimiter,
-            array(
-                explode($path1, $delimiter),
-                explode($path2, $delimiter)
+        $prefix = $this->startsWithDs($path1) ? DIRECTORY_SEPARATOR : '';
+        $suffix = $this->endsWithDs($path2) ? DIRECTORY_SEPARATOR : '';
+
+        return $prefix . implode(
+            DIRECTORY_SEPARATOR,
+            array_merge(
+                preg_split('/\\\|\//', $path1, null, PREG_SPLIT_NO_EMPTY),
+                preg_split('/\\\|\//', $path2, null, PREG_SPLIT_NO_EMPTY)
             )
-        );
+        ) . $suffix;
     }
 
     /**
-     * @param $path1
-     * @param $path2
+     * startsWithDs
      *
-     * @return string
+     * @param $path
+     *
+     * @return bool
+     */
+    protected function startsWithDs($path)
+    {
+        return strrpos($path, '/', -strlen($path)) !== FALSE
+            || strrpos($path, '\\', -strlen($path)) !== FALSE;
+    }
+
+    /**
+     * endsWithDs
+     *
+     * @param $path
+     *
+     * @return bool
      */
-    protected function joinFilePath($path1, $path2)
+    protected function endsWithDs($path)
     {
-        return $this->joinPath($path1, $path2, DIRECTORY_SEPARATOR, true);
+        return strpos($path, '/', strlen($path) - 1) !== FALSE
+            || strpos($path, '\\', strlen($path) - 1) !== FALSE;
     }
 
     /**

tests/MagentoHackathon/Composer/Magento/ModuleInstallerTest.php

@@ -10,7 +10,7 @@
 class ModuleInstallerTest extends \PHPUnit_Framework_TestCase
 {
     /**
-     * @var Installer
+     * @var ModuleInstaller
      */
     protected $object;
 
@@ -239,6 +239,30 @@ public function parserTypeProvider()
      * translations are specified.
      */
 
+    /**
+     * joinFilePathsProvider
+     *
+     * @return array
+     */
+    public function joinFilePathsProvider()
+    {
+        $ds = DIRECTORY_SEPARATOR;
+        return array(
+            array('app/etc/', '/modules', 'app'.$ds.'etc'.$ds.'modules'),
+            array('app/etc/', 'modules', 'app'.$ds.'etc'.$ds.'modules'),
+            array('app/etc', 'modules', 'app'.$ds.'etc'.$ds.'modules'),
+            array('/app/etc', '/modules', $ds.'app'.$ds.'etc'.$ds.'modules'),
+            array('/app/etc/', '/modules', $ds.'app'.$ds.'etc'.$ds.'modules'),
+            array('/app/etc', 'modules/', $ds.'app'.$ds.'etc'.$ds.'modules'.$ds),
+            array('app\\etc\\', '\\modules', 'app'.$ds.'etc'.$ds.'modules'),
+            array('app\\etc\\', 'modules', 'app'.$ds.'etc'.$ds.'modules'),
+            array('app\\etc', 'modules', 'app'.$ds.'etc'.$ds.'modules'),
+            array('\\app\\etc', '\\modules', $ds.'app'.$ds.'etc'.$ds.'modules'),
+            array('\\app\\etc\\', '\\modules', $ds.'app'.$ds.'etc'.$ds.'modules'),
+            array('\\app\\etc', 'modules\\', $ds.'app'.$ds.'etc'.$ds.'modules'.$ds)
+        );
+    }
+
     protected function createPathMappingTranslationMock()
     {
         return $this->createPackageMock(
@@ -345,5 +369,22 @@ public function testMediaPathMappingTranslation2()
         $this->assertContains(array('src2/media/images', './media/examplename_images'), $mappings);
     }
 
+    /**
+     * testJoinFilePaths
+     *
+     * @param $path1
+     * @param $path2
+     * @param $expected
+     *
+     * @return void
+     *
+     * @dataProvider joinFilePathsProvider
+     * @covers MagentoHackathon\Composer\Magento\Installer\ModuleInstaller::joinFilePaths
+     */
+    public function testJoinFilePaths($path1, $path2, $expected)
+    {
+        $this->assertEquals($expected, $this->object->joinFilePath($path1, $path2));
+    }
+
 }