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//
// 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
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