mirror of
https://github.com/MacPaw/XADMaster.git
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130 lines
3.6 KiB
Objective-C
130 lines
3.6 KiB
Objective-C
/*
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* XAD7ZipBranchHandles.m
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*
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* Copyright (c) 2017-present, MacPaw Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#import "XAD7ZipBranchHandles.h"
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#if !__LP64__
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#define _LZMA_UINT32_IS_ULONG
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#endif
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#define Byte LzmaByte
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#define UInt16 LzmaUInt16
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#define UInt32 LzmaUInt32
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#define UInt64 LzmaUInt64
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#import "lzma/Bra.h"
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@implementation XAD7ZipBranchHandle
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-(id)initWithHandle:(CSHandle *)handle
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{
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return [self initWithHandle:handle length:CSHandleMaxLength propertyData:nil];
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}
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-(id)initWithHandle:(CSHandle *)handle propertyData:(NSData *)propertydata
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{
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return [self initWithHandle:handle length:CSHandleMaxLength propertyData:propertydata];
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}
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-(id)initWithHandle:(CSHandle *)handle length:(off_t)length
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{
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return [self initWithHandle:handle length:length propertyData:nil];
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}
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-(id)initWithHandle:(CSHandle *)handle length:(off_t)length propertyData:(NSData *)propertydata
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{
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if((self=[super initWithParentHandle:handle length:length]))
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{
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startoffs=[handle offsetInFile];
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if(propertydata&&[propertydata length]>=4) baseoffset=CSUInt32LE([propertydata bytes]);
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else baseoffset=0;
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[self setBlockPointer:inbuffer];
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}
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return self;
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}
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-(void)resetBlockStream
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{
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[parent seekToFileOffset:startoffs];
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leftoverstart=leftoverlength=0;
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}
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-(int)produceBlockAtOffset:(off_t)pos
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{
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memmove(inbuffer,inbuffer+leftoverstart,leftoverlength);
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int bytesread=[parent readAtMost:sizeof(inbuffer)-leftoverlength toBuffer:inbuffer+leftoverlength];
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if(bytesread==0)
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{
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[self endBlockStream];
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if(leftoverlength) return leftoverlength;
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else return 0;
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}
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int processed=[self decodeBlock:inbuffer length:bytesread+leftoverlength offset:pos+baseoffset];
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leftoverstart=processed;
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leftoverlength=bytesread+leftoverlength-processed;
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return processed;
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}
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-(int)decodeBlock:(uint8_t *)block length:(int)length offset:(off_t)pos { return 0; }
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@end
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@implementation XAD7ZipBCJHandle
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-(void)resetBlockStream
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{
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[super resetBlockStream];
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x86_Convert_Init(state);
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}
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-(int)decodeBlock:(uint8_t *)block length:(int)length offset:(off_t)pos
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{ return x86_Convert(block,length,(UInt32)pos,(UInt32 *)&state,0); }
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@end
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@implementation XAD7ZipPPCHandle
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-(int)decodeBlock:(uint8_t *)block length:(int)length offset:(off_t)pos
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{ return PPC_Convert(block,length,(UInt32)pos,0); }
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@end
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@implementation XAD7ZipIA64Handle
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-(int)decodeBlock:(uint8_t *)block length:(int)length offset:(off_t)pos
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{ return IA64_Convert(block,length,(UInt32)pos,0); }
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@end
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@implementation XAD7ZipARMHandle
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-(int)decodeBlock:(uint8_t *)block length:(int)length offset:(off_t)pos
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{ return ARM_Convert(block,length,(UInt32)pos,0); }
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@end
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@implementation XAD7ZipThumbHandle
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-(int)decodeBlock:(uint8_t *)block length:(int)length offset:(off_t)pos
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{ return ARMT_Convert(block,length,(UInt32)pos,0); }
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@end
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@implementation XAD7ZipSPARCHandle
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-(int)decodeBlock:(uint8_t *)block length:(int)length offset:(off_t)pos
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{ return SPARC_Convert(block,length,(UInt32)pos,0); }
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@end
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