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/*****************************************************************************/
/* SFileExtractFile.cpp Copyright (c) Ladislav Zezula 2003 */
/*---------------------------------------------------------------------------*/
/* Simple extracting utility */
/*---------------------------------------------------------------------------*/
/* Date Ver Who Comment */
/* -------- ---- --- ------- */
/* 20.06.03 1.00 Lad The first version of SFileExtractFile.cpp */
/*****************************************************************************/
#define __STORMLIB_NO_AUTO_LINK__
#include <StormLib.h>
#include "StormCommon.h"
bool WINAPI SFileExtractFile(HANDLE hMpq, const char * szToExtract, const TCHAR * szExtracted, DWORD dwSearchScope)
{
TFileStream * pLocalFile = NULL;
HANDLE hMpqFile = NULL;
int nError = ERROR_SUCCESS;
// Open the MPQ file
if(nError == ERROR_SUCCESS)
{
if(!SFileOpenFileEx(hMpq, szToExtract, dwSearchScope, &hMpqFile))
nError = GetLastError();
}
// Create the local file
if(nError == ERROR_SUCCESS)
{
pLocalFile = FileStream_CreateFile(szExtracted, 0);
if(pLocalFile == NULL)
nError = GetLastError();
}
// Copy the file's content
while(nError == ERROR_SUCCESS)
{
char szBuffer[0x1000];
DWORD dwTransferred = 0;
// dwTransferred is only set to nonzero if something has been read.
// nError can be ERROR_SUCCESS or ERROR_HANDLE_EOF
if(!SFileReadFile(hMpqFile, szBuffer, sizeof(szBuffer), &dwTransferred, NULL))
nError = GetLastError();
if(nError == ERROR_HANDLE_EOF)
nError = ERROR_SUCCESS;
if(dwTransferred == 0)
break;
// If something has been actually read, write it
if(!FileStream_Write(pLocalFile, NULL, szBuffer, dwTransferred))
nError = GetLastError();
}
// Close the files
if(hMpqFile != NULL)
SFileCloseFile(hMpqFile);
if(pLocalFile != NULL)
FileStream_Close(pLocalFile);
if(nError != ERROR_SUCCESS)
SetLastError(nError);
return (nError == ERROR_SUCCESS);
}
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