[Author: iwade]

Add NSData hex conversion routines.

Add a case-insensitive NSDictionary constructor.

I have a need for both pieces of functionality in an iPhone app I'm developing.

R=dmaclach,thomasvl
APPROVED=dmaclach
DELTA=521  (521 added, 0 deleted, 0 changed)

1 files changed, 42 insertions, 0 deletions

diff --git a/Foundation/GTMNSDictionary+CaseInsensitive.h b/Foundation/GTMNSDictionary+CaseInsensitive.h
new file mode 100644
index 0000000..a31e81c
--- /dev/null
+++ b/Foundation/GTMNSDictionary+CaseInsensitive.h
@@ -0,0 +1,42 @@
+//
+//  GTMNSDictionary+CaseInsensitive.h
+//
+//  Copyright 2009 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>
+
+/// Utility for building case-insensitive NSDictionary objects.
+@interface NSDictionary (GTMNSDictionaryCaseInsensitiveAdditions)
+
+/// Initializes an NSDictionary with a case-insensitive comparison function
+/// for NSString keys, while non-NSString keys are treated normally.
+///
+/// The case for NSString keys is preserved, though duplicate keys (when
+/// compared in a case-insensitive fashion) have one of their values dropped
+/// arbitrarily.
+///
+/// An example of use with HTTP headers in an NSHTTPURLResponse object:
+///
+/// NSDictionary *headers =
+///     [NSDictionary gtm_dictionaryWithDictionaryCaseInsensitive:
+///      [response allHeaderFields]];
+/// NSString *contentType = [headers objectForKey:@"Content-Type"];
+- (id)gtm_initWithDictionaryCaseInsensitive:(NSDictionary *)dictionary;
+
+/// Returns a newly created and autoreleased NSDictionary object as above.
++ (id)gtm_dictionaryWithDictionaryCaseInsensitive:(NSDictionary *)dictionary;
+
+@end