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63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
/*****************************************************************************/
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/* SFileExtractFile.cpp Copyright (c) Ladislav Zezula 2003 */
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/*---------------------------------------------------------------------------*/
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/* Simple extracting utility */
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/*---------------------------------------------------------------------------*/
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/* Date Ver Who Comment */
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/* -------- ---- --- ------- */
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/* 20.06.03 1.00 Lad The first version of SFileExtractFile.cpp */
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/*****************************************************************************/
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#define __STORMLIB_SELF__
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#include "StormLib.h"
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#include "SCommon.h"
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// TODO: Test for archives > 4GB
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BOOL WINAPI SFileExtractFile(HANDLE hMpq, const char * szToExtract, const char * szExtracted)
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{
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HANDLE hLocalFile = INVALID_HANDLE_VALUE;
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HANDLE hMpqFile = NULL;
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int nError = ERROR_SUCCESS;
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// Create the local file
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if(nError == ERROR_SUCCESS)
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{
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hLocalFile = CreateFile(szExtracted, GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, 0, NULL);
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if(hLocalFile == INVALID_HANDLE_VALUE)
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nError = GetLastError();
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}
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// Open the MPQ file
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if(nError == ERROR_SUCCESS)
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{
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if(!SFileOpenFileEx(hMpq, szToExtract, 0, &hMpqFile))
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nError = GetLastError();
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}
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// Copy the file's content
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if(nError == ERROR_SUCCESS)
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{
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char szBuffer[0x1000];
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DWORD dwTransferred = 1;
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while(dwTransferred > 0)
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{
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SFileReadFile(hMpqFile, szBuffer, sizeof(szBuffer), &dwTransferred, NULL);
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if(dwTransferred == 0)
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break;
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WriteFile(hLocalFile, szBuffer, dwTransferred, &dwTransferred, NULL);
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if(dwTransferred == 0)
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break;
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}
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}
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// Close the files
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if(hMpqFile != NULL)
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SFileCloseFile(hMpqFile);
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if(hLocalFile != INVALID_HANDLE_VALUE)
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CloseHandle(hLocalFile);
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if(nError != ERROR_SUCCESS)
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SetLastError(nError);
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return (BOOL)(nError == ERROR_SUCCESS);
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}
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