mirror of
https://github.com/libretro/snes9x.git
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95 lines
2.6 KiB
Objective-C
95 lines
2.6 KiB
Objective-C
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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/***********************************************************************************
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SNES9X for Mac OS (c) Copyright John Stiles
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Snes9x for Mac OS X
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(c) Copyright 2001 - 2011 zones
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(c) Copyright 2002 - 2005 107
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(c) Copyright 2002 PB1400c
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(c) Copyright 2004 Alexander and Sander
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(c) Copyright 2004 - 2005 Steven Seeger
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(c) Copyright 2005 Ryan Vogt
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(c) Copyright 2019 - 2023 Michael Donald Buckley
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***********************************************************************************/
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#import "S9xHexNumberFormatter.h"
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@implementation S9xHexNumberFormatter
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+ (NSUInteger)maxLength
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{
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return NSUIntegerMax;
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}
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- (BOOL)getObjectValue:(out id _Nullable __autoreleasing *)obj forString:(NSString *)string errorDescription:(out NSString * _Nullable __autoreleasing *)error
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{
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if (string.length > 0)
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{
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unsigned int value = 0;
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NSScanner *scanner = [NSScanner scannerWithString:string];
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[scanner scanHexInt:&value];
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*obj = @(value);
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return YES;
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}
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return NO;
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}
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- (NSNumber *)numberFromString:(NSString *)string
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{
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unsigned int value = 0;
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NSScanner *scanner = [NSScanner scannerWithString:string];
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[scanner scanHexInt:&value];
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return @(value);
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}
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- (NSString *)stringForObjectValue:(id)obj
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{
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if ([obj isKindOfClass:NSNumber.class])
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{
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return [NSString stringWithFormat:@"%X", ((NSNumber *)obj).unsignedIntValue];
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}
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else if ([obj isKindOfClass:NSString.class])
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{
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return obj;
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}
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return @"";
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}
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- (BOOL)isPartialStringValid:(NSString * _Nonnull * _Nonnull)partialStringPtr proposedSelectedRange:(nullable NSRangePointer)proposedSelRangePtr originalString:(NSString *)origString originalSelectedRange:(NSRange)origSelRange errorDescription:(NSString * _Nullable * _Nullable)error
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{
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static NSCharacterSet *hexCharacterSet;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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hexCharacterSet = [[NSCharacterSet characterSetWithCharactersInString:@"0123456789ABCDEFabcdef"] invertedSet];
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});
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if ( [*partialStringPtr rangeOfCharacterFromSet:hexCharacterSet].location != NSNotFound )
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{
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*partialStringPtr = nil;
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return NO;
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}
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*partialStringPtr = (*partialStringPtr).uppercaseString;
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if ( (*partialStringPtr).length > self.class.maxLength )
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{
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*partialStringPtr = [*partialStringPtr substringToIndex:self.class.maxLength];
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return NO;
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}
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return YES;
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}
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@end
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