XzIn.c File Reference

#include "Precomp.h"
#include <string.h>
#include "7zCrc.h"
#include "CpuArch.h"
#include "Xz.h"

Macros
#define	XZ_FOOTER_SIG_CHECK(p)
#define	READ_VARINT_AND_CHECK(buf, pos, size, res)
#define	ADD_SIZE_CHECK(size, val)
#define	TEMP_BUF_SIZE   (1 << 10)

Functions
SRes	Xz_ReadHeader (CXzStreamFlags *p, ISeqInStreamPtr inStream)
SRes	XzBlock_ReadHeader (CXzBlock *p, ISeqInStreamPtr inStream, BoolInt *isIndex, UInt32 *headerSizeRes)
UInt64	Xz_GetUnpackSize (const CXzStream *p)
UInt64	Xz_GetPackSize (const CXzStream *p)
void	Xzs_Construct (CXzs *p)
void	Xzs_Free (CXzs *p, ISzAllocPtr alloc)
UInt64	Xzs_GetNumBlocks (const CXzs *p)
UInt64	Xzs_GetUnpackSize (const CXzs *p)
SRes	Xzs_ReadBackward (CXzs *p, ILookInStreamPtr stream, Int64 *startOffset, ICompressProgressPtr progress, ISzAllocPtr alloc)

Macro Definition Documentation

ADD_SIZE_CHECK

#define ADD_SIZE_CHECK	(		size,
			val )

Value:

  { UInt64 newSize = size + (val); if (newSize < size) return XZ_SIZE_OVERFLOW; size = newSize; }

READ_VARINT_AND_CHECK

#define READ_VARINT_AND_CHECK	(		buf,
			pos,
			size,
			res )

Value:

  { unsigned s = Xz_ReadVarInt(buf + pos, size - pos, res); \
  if (s == 0) return SZ_ERROR_ARCHIVE; \
  pos += s; }

TEMP_BUF_SIZE

#define TEMP_BUF_SIZE   (1 << 10)

XZ_FOOTER_SIG_CHECK

#define XZ_FOOTER_SIG_CHECK

(

p

)

Value:

((p)[0] == XZ_FOOTER_SIG_0 && (p)[1] == XZ_FOOTER_SIG_1)

Function Documentation

Xz_GetPackSize()

UInt64 Xz_GetPackSize

(

const CXzStream *

p

)

Xz_GetUnpackSize()

UInt64 Xz_GetUnpackSize

(

const CXzStream *

p

)

Xz_ReadHeader()

SRes Xz_ReadHeader	(	CXzStreamFlags *	p,
		ISeqInStreamPtr	inStream )

XzBlock_ReadHeader()

SRes XzBlock_ReadHeader	(	CXzBlock *	p,
		ISeqInStreamPtr	inStream,
		BoolInt *	isIndex,
		UInt32 *	headerSizeRes )

Xzs_Construct()

void Xzs_Construct

(

CXzs *

p

)

Xzs_Free()

void Xzs_Free	(	CXzs *	p,
		ISzAllocPtr	alloc )

Xzs_GetNumBlocks()

UInt64 Xzs_GetNumBlocks

(

const CXzs *

p

)

Xzs_GetUnpackSize()

UInt64 Xzs_GetUnpackSize

(

const CXzs *

p

)

Xzs_ReadBackward()

SRes Xzs_ReadBackward	(	CXzs *	p,
		ILookInStreamPtr	stream,
		Int64 *	startOffset,
		ICompressProgressPtr	progress,
		ISzAllocPtr	alloc )