1 files changed, 51 insertions, 0 deletions
diff --git a/Foundation/GTMFourCharCode.h b/Foundation/GTMFourCharCode.h
new file mode 100644
index 0000000..90853b5
--- /dev/null
+++ b/Foundation/GTMFourCharCode.h
@@ -0,0 +1,51 @@
+//
+//  GTMFourCharCode
+//  Wrapper for FourCharCodes
+//
+//  Copyright 2008 Google Inc.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License"); you may not
+//  use this file except in compliance with the License.  You may obtain a copy
+//  of the License at
+// 
+//  http://www.apache.org/licenses/LICENSE-2.0
+// 
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+//  License for the specific language governing permissions and limitations under
+//  the License.
+//
+
+#import <Foundation/Foundation.h>
+
+// FourCharCodes are OSTypes, ResTypes etc. This class wraps them if
+// you need to store them in dictionaries etc.
+@interface GTMFourCharCode : NSObject <NSCopying, NSCoding> {
+  FourCharCode code_;
+}
+
+// returns a string for a FourCharCode
++ (id)stringWithFourCharCode:(FourCharCode)code;
+
+// String must be 4 chars or less, or you will get nil back.
++ (id)fourCharCodeWithString:(NSString*)string;
++ (id)fourCharCodeWithFourCharCode:(FourCharCode)code;
+
+// String must be 4 chars or less, or you will get nil back.
+- (id)initWithString:(NSString*)string;
+
+// Designated Initializer
+- (id)initWithFourCharCode:(FourCharCode)code;
+
+// Returns 'APPL' for "APPL"
+- (FourCharCode)fourCharCode;
+
+// For FourCharCode of 'APPL' returns "APPL". For 1 returns "\0\0\0\1"
+- (NSString*)stringValue;
+
+// For FourCharCode of "APPL" returns an NSNumber with 1095782476 (0x4150504C).
+// For 1 returns 1.
+- (NSNumber*)numberValue;
+
+@end