commit 727d0789efb00872a5922ac688f7d6ba9df85525
author Rodinei Fagundes <rodinei.jf@gmail.com> Mon Oct 18 11:09:39 2021 -0300
committer GitHub <noreply@github.com> Mon Oct 18 07:09:39 2021 -0700
tree 5eb6efb44647922a31dfd29924f66012bd5babd5
parent aab41d3dbf92b30b6df7a9288632953bc951e086

Add magic numbers for WebP (#54)

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b77b2ac..52c625f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 1.0.1
+
+* Add image/webp mimeType lookup by header bytes.
+
 # 1.0.0
 
 * Stable null safety release.

lib/src/magic_number.dart

diff --git a/lib/src/magic_number.dart b/lib/src/magic_number.dart
index 9db370f..78255c5 100644
--- a/lib/src/magic_number.dart
+++ b/lib/src/magic_number.dart
@@ -65,4 +65,37 @@
     0xFF
   ]),
   MagicNumber('model/gltf-binary', [0x46, 0x54, 0x6C, 0x67]),
+
+  /// The WebP file format is based on the RIFF document format.
+  /// -> 4 bytes have the ASCII characters 'R' 'I' 'F' 'F'.
+  /// -> 4 bytes indicating the size of the file
+  /// -> 4 bytes have the ASCII characters 'W' 'E' 'B' 'P'.
+  /// https://developers.google.com/speed/webp/docs/riff_container
+  MagicNumber('image/webp', [
+    0x52,
+    0x49,
+    0x46,
+    0x46,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+    0x57,
+    0x45,
+    0x42,
+    0x50
+  ], mask: [
+    0xFF,
+    0xFF,
+    0xFF,
+    0xFF,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+    0xFF,
+    0xFF,
+    0xFF,
+    0xFF
+  ])
 ];

pubspec.yaml

diff --git a/pubspec.yaml b/pubspec.yaml
index 5d796ae..d1b8430 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: mime
-version: 1.0.0
+version: 1.0.1
 
 description: >-
   Utilities for handling media (MIME) types, including determining a type from

test/mime_type_test.dart

diff --git a/test/mime_type_test.dart b/test/mime_type_test.dart
index 4dfdb13..e02e0af 100644
--- a/test/mime_type_test.dart
+++ b/test/mime_type_test.dart
@@ -40,6 +40,7 @@
       _expectMimeType('file.pdf', 'application/pdf');
       _expectMimeType('file.tiff', 'image/tiff');
       _expectMimeType('file.tif', 'image/tiff');
+      _expectMimeType('file.webp', 'image/webp');
     });
 
     test('unknown-mime-type', () {
@@ -87,6 +88,20 @@
         0x70,
         0x35
       ]);
+      _expectMimeType('file', 'image/webp', headerBytes: [
+        0x52,
+        0x49,
+        0x46,
+        0x46,
+        0xE2,
+        0x4A,
+        0x01,
+        0x00,
+        0x57,
+        0x45,
+        0x42,
+        0x50
+      ]);
     });
   });