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#import "XADPPMdHandles.h"
#import "XADException.h"
@implementation XADPPMdVariantGHandle
-(id)initWithHandle:(CSHandle *)handle maxOrder:(int)maxorder subAllocSize:(int)suballocsize
{
return [self initWithHandle:handle length:CSHandleMaxLength maxOrder:maxorder subAllocSize:suballocsize];
}
-(id)initWithHandle:(CSHandle *)handle length:(off_t)length maxOrder:(int)maxorder subAllocSize:(int)suballocsize
{
if((self=[super initWithInputBufferForHandle:handle length:length]))
{
alloc=CreateSubAllocatorVariantG(suballocsize);
max=maxorder;
}
return self;
}
-(void)dealloc
{
FreeSubAllocatorVariantG(alloc);
[super dealloc];
}
-(void)resetByteStream
{
if(!StartPPMdModelVariantG(&model,(PPMdReadFunction *)CSInputNextByte,input,&alloc->core,max,NO))
{
[XADException raiseDecrunchException];
}
}
-(uint8_t)produceByteAtOffset:(off_t)pos
{
int byte=NextPPMdVariantGByte(&model);
if(byte==-1) CSByteStreamEOF(self);
else if(byte==-2) { [XADException raiseDecrunchException]; return 0; }
else return byte;
}
@end
@implementation XADPPMdVariantHHandle
-(id)initWithHandle:(CSHandle *)handle maxOrder:(int)maxorder subAllocSize:(int)suballocsize
{
return [self initWithHandle:handle length:CSHandleMaxLength maxOrder:maxorder subAllocSize:suballocsize];
}
-(id)initWithHandle:(CSHandle *)handle length:(off_t)length maxOrder:(int)maxorder subAllocSize:(int)suballocsize
{
if((self=[super initWithInputBufferForHandle:handle length:length]))
{
alloc=CreateSubAllocatorVariantH(suballocsize);
max=maxorder;
}
return self;
}
-(void)dealloc
{
FreeSubAllocatorVariantH(alloc);
[super dealloc];
}
-(void)resetByteStream { StartPPMdModelVariantH(&model,(PPMdReadFunction *)CSInputNextByte,input,alloc,max,NO); }
-(uint8_t)produceByteAtOffset:(off_t)pos
{
int byte=NextPPMdVariantHByte(&model);
if(byte<0) CSByteStreamEOF(self);
return byte;
}
@end
@implementation XADPPMdVariantIHandle
-(id)initWithHandle:(CSHandle *)handle maxOrder:(int)maxorder subAllocSize:(int)suballocsize modelRestorationMethod:(int)mrmethod
{
return [self initWithHandle:handle length:CSHandleMaxLength maxOrder:maxorder subAllocSize:suballocsize modelRestorationMethod:mrmethod];
}
-(id)initWithHandle:(CSHandle *)handle length:(off_t)length maxOrder:(int)maxorder subAllocSize:(int)suballocsize modelRestorationMethod:(int)mrmethod
{
if((self=[super initWithInputBufferForHandle:handle length:length]))
{
alloc=CreateSubAllocatorVariantI(suballocsize);
max=maxorder;
method=mrmethod;
}
return self;
}
-(void)dealloc
{
FreeSubAllocatorVariantI(alloc);
[super dealloc];
}
-(void)resetByteStream
{
if(max<2) [XADException raiseNotSupportedException];
StartPPMdModelVariantI(&model,(PPMdReadFunction *)CSInputNextByte,input,alloc,max,method);
}
-(uint8_t)produceByteAtOffset:(off_t)pos
{
int byte=NextPPMdVariantIByte(&model);
if(byte<0) CSByteStreamEOF(self);
return byte;
}
@end
@implementation XADStuffItXBrimstoneHandle
-(id)initWithHandle:(CSHandle *)handle maxOrder:(int)maxorder subAllocSize:(int)suballocsize
{
return [self initWithHandle:handle length:CSHandleMaxLength maxOrder:maxorder subAllocSize:suballocsize];
}
-(id)initWithHandle:(CSHandle *)handle length:(off_t)length maxOrder:(int)maxorder subAllocSize:(int)suballocsize
{
if((self=[super initWithInputBufferForHandle:handle length:length]))
{
alloc=CreateSubAllocatorBrimstone(suballocsize);
max=maxorder;
}
return self;
}
-(void)dealloc
{
FreeSubAllocatorBrimstone(alloc);
[super dealloc];
}
-(void)resetByteStream
{
if(!StartPPMdModelVariantG(&model,(PPMdReadFunction *)CSInputNextByte,input,&alloc->core,max,YES))
{
[XADException raiseDecrunchException];
}
}
-(uint8_t)produceByteAtOffset:(off_t)pos
{
int byte=NextPPMdVariantGByte(&model);
if(byte<0) CSByteStreamEOF(self);
return byte;
}
@end
@implementation XAD7ZipPPMdHandle
-(void)resetByteStream { StartPPMdModelVariantH(&model,(PPMdReadFunction *)CSInputNextByte,input,alloc,max,YES); }
@end
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