Prepare version 2.9.1-alpha.2.

composer.json

@@ -1,7 +1,7 @@
 {
 	"name" : "gomoob/php-metadata-extractor",
 	"description" : "PHP wrapper to easily call the Java metadata-extrator library.",
-	"version" : "2.9.1-alpha.1",
+	"version" : "2.9.1-alpha.2",
 	"license" : "MIT",
 	"type" : "library",
 	"keywords" : [

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gomoob-php-metadata-extractor",
-  "version": "2.9.1-alpha.1",
+  "version": "2.9.1-alpha.2",
   "license": "MIT",
   "repository" : {
     "type" : "git",

src/main/php/Gomoob/MetadataExtractor/Metadata/Directory.php

@@ -50,6 +50,18 @@ abstract class Directory
      */
     protected $tagMap = [];
 
+    /**
+     * Indicates whether the specified tag type has been set.
+     *
+     * @param int tagType the tag type to check for.
+     *
+     * @return boolean true if a value exists for the specified tag type, false if not.
+     */
+    public function containsTag($tagType)
+    {
+        return array_key_exists(intval($tagType), $this->tagMap);
+    }
+
     /**
      * Provides a description of a tag's value using the descriptor set by <code>setDescriptor(Descriptor)</code>.
      *

src/test/php/Gomoob/BinaryDriver/MetadataExtractorDriverTest.php

@@ -55,14 +55,26 @@ public function testCreate()
         $this->assertContains('[Exif IFD0] Model = Canon EOS 70D', $output);
         $this->assertContains('[Exif IFD0] Exposure Time = 1/250 sec', $output);
         $this->assertContains('[Exif SubIFD] Exposure Time = 1/250 sec', $output);
-        $this->assertContains('[Exif SubIFD] F-Number = f/8,0', $output);
+
+        // Under Windows and with French local floating numbers use ',' but under Unix its '.'
+        $this->assertTrue(
+            strstr($output, '[Exif SubIFD] F-Number = f/8,0') !== false  ||
+            strstr($output, '[Exif SubIFD] F-Number = f/8.0') !== false
+        );
+
         $this->assertContains('[Exif SubIFD] ISO Speed Ratings = null', $output);
         $this->assertContains('[Exif SubIFD] Date/Time Original = 2016:07:17 10:35:28', $output);
         $this->assertContains('[Exif SubIFD] Flash = null', $output);
         $this->assertContains('[Exif SubIFD] Focal Length = 51 mm', $output);
         $this->assertContains('[Exif SubIFD] Lens Model = EF-S17-55mm f/2.8 IS USM', $output);
         $this->assertContains('[File] File Name = elephant.jpg', $output);
-        $this->assertContains('[File] File Size = 830001 bytes', $output);
+
+        // Under Windows the number of bytes computed is not the same as Unix
+        $this->assertTrue(
+            strstr($output, '[File] File Size = 829992 bytes') !== false  ||
+            strstr($output, '[File] File Size = 830001 bytes') !== false
+        );
+
         $this->assertContains('[File] File Modified Date = ', $output);
     }