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/* NSBitmapCharSet - Concrete character set holder
Copyright (C) 1993,1994 Free Software Foundation, Inc.
Written by: Adam Fedor <fedor@boulder.colorado.edu>
Date: Apr 1995
This file is part of the GNU Objective C Class Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <Foundation/NSBitmapCharSet.h>
#include <Foundation/NSException.h>
@implementation NSBitmapCharSet
- init
{
return [self initWithBitmap:NULL];
}
/* Designated initializer */
- initWithBitmap:(NSData *)bitmap
{
[super init];
[bitmap getBytes:data length:BITMAP_SIZE];
return self;
}
- (NSData *)bitmapRepresentation
{
return [NSData dataWithBytes:data length:BITMAP_SIZE];
}
- (BOOL)characterIsMember:(unichar)aCharacter
{
return ISSET(data[aCharacter/8], aCharacter % 8);
}
@end
@implementation NSMutableBitmapCharSet
- init
{
return [self initWithBitmap:NULL];
}
/* Designated initializer */
- initWithBitmap:(NSData *)bitmap
{
[super init];
if (bitmap)
[bitmap getBytes:data length:BITMAP_SIZE];
return self;
}
/* Need to implement the next two methods just like NSBitmapCharSet */
- (NSData *)bitmapRepresentation
{
return [NSData dataWithBytes:data length:BITMAP_SIZE];
}
- (BOOL)characterIsMember:(unichar)aCharacter
{
return ISSET(data[aCharacter/8], aCharacter % 8);
}
- (void)addCharactersInRange:(NSRange)aRange
{
int i;
if (NSMaxRange(aRange) > UNICODE_SIZE)
{
[NSException raise:NSInvalidArgumentException
format:@"Specified range exceeds character set"];
/* NOT REACHED */
}
for (i=aRange.location; i < NSMaxRange(aRange); i++)
SETBIT(data[i/8], i % 8);
}
- (void)addCharactersInString:(NSString *)aString
{
int i, length;
if (!aString)
{
[NSException raise:NSInvalidArgumentException
format:@"Adding characters from nil string"];
/* NOT REACHED */
}
length = [aString length];
for (i=0; i < length; i++)
{
unichar letter = [aString characterAtIndex:i];
SETBIT(data[letter/8], letter % 8);
}
}
- (void)formUnionWithCharacterSet:(NSCharacterSet *)otherSet
{
int i;
const char *other_bytes;
other_bytes = [[otherSet bitmapRepresentation] bytes];
for (i=0; i < BITMAP_SIZE; i++)
data[i] = (data[i] || other_bytes[i]);
}
- (void)formIntersectionWithCharacterSet:(NSCharacterSet *)otherSet
{
int i;
const char *other_bytes;
other_bytes = [[otherSet bitmapRepresentation] bytes];
for (i=0; i < BITMAP_SIZE; i++)
data[i] = (data[i] && other_bytes[i]);
}
- (void)removeCharactersInRange:(NSRange)aRange
{
int i;
if (NSMaxRange(aRange) > UNICODE_SIZE)
{
[NSException raise:NSInvalidArgumentException
format:@"Specified range exceeds character set"];
/* NOT REACHED */
}
for (i=aRange.location; i < NSMaxRange(aRange); i++)
CLRBIT(data[i/8], i % 8);
}
- (void)removeCharactersInString:(NSString *)aString
{
int i, length;
if (!aString)
{
[NSException raise:NSInvalidArgumentException
format:@"Removing characters from nil string"];
/* NOT REACHED */
}
length = [aString length];
for (i=0; i < length; i++)
{
unichar letter = [aString characterAtIndex:i];
CLRBIT(data[letter/8], letter % 8);
}
}
- (void)invert
{
int i;
for (i=0; i < BITMAP_SIZE; i++)
data[i] = ~data[i];
}
@end
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