167 lines
2.8 KiB
C++
167 lines
2.8 KiB
C++
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// Persistor.cpp: implementation of the CPersistor class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include <string>
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#include <iosfwd>
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#include <iostream>
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#include <fstream>
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using namespace std;
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#include <WTYPES.H>
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#include "t_string.h"
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#include "Persistor.h"
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#include "StructureWapperHelpers.h"
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#ifdef _UNICODE
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static TCHAR g_tcBeginFile[] = {0xfeff};
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static TCHAR g_atcNL[] = {0x0d, 0x0a, 0x00};
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#endif
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CPersistor::CPersistor
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(const char *pszFilename, int nMode, bool bLoading)
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{
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m_sFilename = pszFilename;
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m_nMode = nMode;
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m_bLoading = bLoading;
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m_pfsFile = NULL;
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m_bFirst = true;
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m_pfsFile = NULL;
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}
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CPersistor::~CPersistor()
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{
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Close();
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}
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HRESULT CPersistor::Close()
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{
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if (m_pfsFile && m_pfsFile->is_open())
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{
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#ifdef _UNICODE
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if (!m_bLoading)
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{
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}
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#endif
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m_pfsFile->flush();
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m_pfsFile->close();
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delete m_pfsFile;
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m_pfsFile = NULL;
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}
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else if (m_pfsFile)
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{
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delete m_pfsFile;
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m_pfsFile = NULL;
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}
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return S_OK;
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}
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HRESULT CPersistor::Open()
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{
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m_pfsFile = NULL;
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m_pfsFile = new t_fstream
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(m_sFilename.c_str(),m_nMode | ios_base::binary);
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if (m_pfsFile && m_pfsFile->fail())
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{
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return HRESULT_FROM_WIN32(GetLastError());
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}
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else
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{
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#ifdef _UNICODE
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if (m_bFirst && !m_bLoading)
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{
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// To Do: Need to write out here the UNICODE string.
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PutALine(*m_pfsFile, g_tcBeginFile, 1);
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}
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else if (m_bFirst)
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{
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// Need to skip over the UNICODE string.
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fpos_t p = m_pfsFile->tellp();
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if (p == (fpos_t) 0)
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{
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TCHAR tc;
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tc = Stream().peek();
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// Need to make sure that the file is unicode.
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if (tc != 0xff)
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{
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m_pfsFile ->close();
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delete m_pfsFile;
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m_pfsFile = NULL;
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return HRESULT_FROM_WIN32(ERROR_NO_UNICODE_TRANSLATION);
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}
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TCHAR t;
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GetAChar(Stream(), t);
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}
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}
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#else
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if (m_bFirst && m_bLoading)
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{
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// Need to make sure that the file is not unicode.
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int tc;
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tc = Stream().peek();
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if (tc == 0xff)
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{
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m_pfsFile ->close();
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delete m_pfsFile;
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m_pfsFile = NULL;
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return HRESULT_FROM_WIN32(ERROR_NO_UNICODE_TRANSLATION);
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}
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}
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#endif
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m_bFirst = false;
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return S_OK;
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}
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}
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//
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HRESULT CPersistor::OpenLog(bool bAppend)
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{
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m_pfsFile = NULL;
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m_pfsFile = new t_fstream
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(m_sFilename.c_str(),m_nMode | ios_base::binary | (bAppend ? ios::app : 0));
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if (m_pfsFile && m_pfsFile->fail())
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{
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return HRESULT_FROM_WIN32(GetLastError());
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}
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else
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{
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#ifdef _UNICODE
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//m_pfsFile->seekp(ios::end);
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//fpos_t p = m_pfsFile->tellp();
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//if (p == (fpos_t) 0)
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//{
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PutALine(*m_pfsFile, g_tcBeginFile, 1);
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//}
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#endif
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return S_OK;
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}
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}
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