pkg/mime: layout as mini-libraries

pkg/mime/lib/src/magic_number.dart

Index: pkg/mime/lib/src/magic_number.dart
diff --git a/pkg/mime/lib/src/magic_number.dart b/pkg/mime/lib/src/magic_number.dart
index 1229b6dab5fac94fd2b701c06fb440c0db2a421e..6c554aaa4e2fcfa9c2f0d48f55953e6fa9ec845e 100644
--- a/pkg/mime/lib/src/magic_number.dart
+++ b/pkg/mime/lib/src/magic_number.dart
@@ -2,15 +2,14 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-part of mime;
+library mime.magic_number;
 
-
-class _MagicNumber {
+class MagicNumber {
   final String mimeType;
   final List<int> numbers;
   final List<int> mask;
 
-  const _MagicNumber(this.mimeType, this.numbers, {this.mask});
+  const MagicNumber(this.mimeType, this.numbers, {this.mask});
 
   bool matches(List<int> header) {
     if (header.length < numbers.length) return false;
@@ -28,19 +27,17 @@ class _MagicNumber {
 
 }
 
-const int _DEFAULT_MAGIC_NUMBERS_MAX_LENGTH = 16;
-
-const List<_MagicNumber> _DEFAULT_MAGIC_NUMBERS = const [
-  const _MagicNumber('application/pdf', const [0x25, 0x50, 0x44, 0x46]),
-  const _MagicNumber('application/postscript', const [0x25, 0x51]),
-  const _MagicNumber('image/gif', const [0x47, 0x49, 0x46, 0x38, 0x37, 0x61]),
-  const _MagicNumber('image/gif', const [0x47, 0x49, 0x46, 0x38, 0x39, 0x61]),
-  const _MagicNumber('image/jpeg', const [0xFF, 0xD8]),
-  const _MagicNumber('image/png',
+const List<MagicNumber> DEFAULT_MAGIC_NUMBERS = const [
+  const MagicNumber('application/pdf', const [0x25, 0x50, 0x44, 0x46]),
+  const MagicNumber('application/postscript', const [0x25, 0x51]),
+  const MagicNumber('image/gif', const [0x47, 0x49, 0x46, 0x38, 0x37, 0x61]),
+  const MagicNumber('image/gif', const [0x47, 0x49, 0x46, 0x38, 0x39, 0x61]),
+  const MagicNumber('image/jpeg', const [0xFF, 0xD8]),
+  const MagicNumber('image/png',
       const [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A]),
-  const _MagicNumber('image/tiff', const [0x49, 0x49, 0x2A, 0x00]),
-  const _MagicNumber('image/tiff', const [0x4D, 0x4D, 0x00, 0x2A]),
-  const _MagicNumber(
+  const MagicNumber('image/tiff', const [0x49, 0x49, 0x2A, 0x00]),
+  const MagicNumber('image/tiff', const [0x4D, 0x4D, 0x00, 0x2A]),
+  const MagicNumber(
       'video/mp4',
       const [0x00, 0x00, 0x00, 0x00, 0x66, 0x74,
              0x79, 0x70, 0x33, 0x67, 0x70, 0x35],