JuniorHighClient/zlib/IOBase.cpp

#include "IOBase.h"
#include "ZLib/ioapi.h"

voidpf  ZCALLBACK iobase_open_file_func  OF((voidpf opaque, const char* filename, int mode));
uLong   ZCALLBACK iobase_read_file_func  OF((voidpf opaque, voidpf stream, void* buf, uLong size));
uLong   ZCALLBACK iobase_write_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
long    ZCALLBACK iobase_tell_file_func  OF((voidpf opaque, voidpf stream));
long    ZCALLBACK iobase_seek_file_func  OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
int     ZCALLBACK iobase_close_file_func OF((voidpf opaque, voidpf stream));
int     ZCALLBACK iobase_error_file_func OF((voidpf opaque, voidpf stream));


voidpf ZCALLBACK iobase_open_file_func (voidpf opaque,const char* filename,int mode)
{
	CIOBase*  _stream=NULL;
	if(opaque){
		_stream = (CIOBase*)opaque;
		_stream->OpenFile();
	}
	return _stream;
}


uLong ZCALLBACK iobase_read_file_func (voidpf opaque, voidpf stream, void* buf,uLong size)
{
	uLong ret=0;
	CIOBase* _stream=NULL;
	if(stream!=NULL)
		_stream=( CIOBase* )stream;
	if(_stream!=NULL){
		if(ret =_stream->ReadFile(buf,size)){
		}
	}
	return ret;
}


uLong ZCALLBACK iobase_write_file_func (voidpf opaque,voidpf stream,const void* buf,uLong size)
{
	uLong ret=0;
	CIOBase* _stream=NULL;
	if(stream!=NULL)
		_stream=( CIOBase* )stream;

	if(_stream!=NULL){
		_stream->WriteFile(buf,size);
		ret = size;

	}

	return ret;
}

long ZCALLBACK iobase_tell_file_func (voidpf opaque,voidpf stream)
{
	long ret=-1;
	CIOBase* _stream=NULL;
	if(stream!=NULL)
		_stream=( CIOBase* )stream;

	if(_stream!=NULL){
		ret=_stream->TellFile();
	}
	return ret;
}


long ZCALLBACK iobase_seek_file_func (voidpf opaque,voidpf stream,uLong offset,int origin)
{
	long dwMoveMethod=0xFFFFFFFF;

	long ret=-1;
	CIOBase* _stream=NULL;
	if(stream!=NULL)
		_stream=( CIOBase* )stream;
	switch (origin)
	{
	case ZLIB_FILEFUNC_SEEK_CUR :
		dwMoveMethod = CIOBase::CURRENT;
		break;
	case ZLIB_FILEFUNC_SEEK_END :
		dwMoveMethod = CIOBase::END;
		break;
	case ZLIB_FILEFUNC_SEEK_SET :
		dwMoveMethod = CIOBase::BEGIN;
		break;
	default: return -1;
	}
	if(_stream!=NULL){
		_stream->SeekFile(offset,dwMoveMethod);
		ret =0;
	}
	return ret;
}

int ZCALLBACK iobase_close_file_func (voidpf opaque, voidpf stream)
{
	int ret=-1;
	CIOBase* _stream=NULL;
	if(stream!=NULL)
		_stream=( CIOBase* )stream;
	if(_stream!=NULL){
		_stream->CloseFile();
		ret=0;
	}
	return ret;
}

int ZCALLBACK iobase_error_file_func (voidpf opaque,voidpf stream)
{
	int ret=-1;
	CIOBase* _stream=NULL;
	if(stream!=NULL){
		_stream=( CIOBase* )stream;
		ret =0;
	}
	return ret;
}

void fill_mfc_filefunc (zlib_filefunc_def* pzlib_filefunc_def)
{
	pzlib_filefunc_def->zopen_file = iobase_open_file_func;
	pzlib_filefunc_def->zread_file = iobase_read_file_func;
	pzlib_filefunc_def->zwrite_file = iobase_write_file_func;
	pzlib_filefunc_def->ztell_file = iobase_tell_file_func;
	pzlib_filefunc_def->zseek_file = iobase_seek_file_func;
	pzlib_filefunc_def->zclose_file = iobase_close_file_func;
	pzlib_filefunc_def->zerror_file = iobase_error_file_func;
	pzlib_filefunc_def->opaque = NULL;
}

CIOBase::CIOBase(void):m_pzlib_filefunc_def(NULL)
{
	zlib_filefunc_def* pzlib_filefunc_def =new zlib_filefunc_def;
	m_pzlib_filefunc_def = pzlib_filefunc_def;
	fill_mfc_filefunc(pzlib_filefunc_def);
	pzlib_filefunc_def->opaque = this;
}


CIOBase::~CIOBase(void)
{
	if(m_pzlib_filefunc_def!=NULL){
		delete m_pzlib_filefunc_def;
		m_pzlib_filefunc_def = NULL;
	}
}