1 files changed, 60 insertions, 0 deletions
diff --git a/Foundation/GTMNSScanner+Unsigned.m b/Foundation/GTMNSScanner+Unsigned.m
new file mode 100644
index 0000000..9228ba2
--- /dev/null
+++ b/Foundation/GTMNSScanner+Unsigned.m
@@ -0,0 +1,60 @@
+//
+//  GTMNSScanner+Unsigned.m
+//
+//  Copyright 2010 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 "GTMNSScanner+Unsigned.h"
+#include <stdlib.h>
+#include <limits.h>
+
+@implementation NSScanner (GTMUnsignedAdditions)
+
+- (BOOL)gtm_scanUnsignedInt:(unsigned int *)value {
+  unsigned long long uLongLongValue = 0;
+  BOOL wasGood = [self gtm_scanUnsignedLongLong:&uLongLongValue];
+  if (wasGood && value) {
+    if (uLongLongValue > UINT_MAX) {
+      *value = UINT_MAX;
+    } else {
+      *value = (unsigned int)uLongLongValue;
+    }
+  }
+  return wasGood;
+}
+
+- (BOOL)gtm_scanUInteger:(NSUInteger *)value {
+#if defined(__LP64__) && __LP64__
+  return [self gtm_scanUnsignedLongLong:(unsigned long long*)value];
+#else 
+  return [self gtm_scanUnsignedInt:value];
+#endif //  defined(__LP64__) && __LP64__
+}
+
+- (BOOL)gtm_scanUnsignedLongLong:(unsigned long long *)value {
+  // Slow path
+  NSCharacterSet *decimalSet = [NSCharacterSet decimalDigitCharacterSet];
+  NSString *digitString = nil;
+  BOOL wasGood = [self scanCharactersFromSet:decimalSet intoString:&digitString];
+  if (wasGood) {
+    const char *digitChars = [digitString UTF8String];
+    if (value) {
+      *value = strtoull(digitChars, NULL, 10);
+    }
+  }
+  return wasGood;
+}
+
+@end