bool CLogFile::Log(LPCTSTR pszMsg, int iLen)
{
if (m_fp == NULL)
return false;
size_t uWritten;
if (m_eFileFormat == Unicode)
{
// don't use 'fputs' + '_filelength' -- gives poor performance
size_t uToWrite = ((iLen == -1) ? _tcslen(pszMsg) : (size_t)iLen)*sizeof(TCHAR);
uWritten = fwrite(pszMsg, 1, uToWrite, m_fp);
}
else
{
TUnicodeToUTF8<2048> utf8(pszMsg, iLen);
uWritten = fwrite((LPCSTR)utf8, 1, utf8.GetLength(), m_fp);
}
bool bResult = !ferror(m_fp);
m_uBytesWritten += uWritten;
if (m_uBytesWritten >= m_uMaxFileSize)
StartNewLogFile();
else
fflush(m_fp);
return bResult;
}
bool CLogFile::Open()
{
if (m_fp != NULL)
return true;
m_fp = _tfsopen(m_strFilePath, _T("a+b"), _SH_DENYWR);
if (m_fp != NULL)
{
m_tStarted = time(NULL);
m_uBytesWritten = _filelength(_fileno(m_fp));
if (m_uBytesWritten == 0)
{
if (m_eFileFormat == Unicode)
{
// write Unicode byte-order mark 0xFEFF
fputwc(0xFEFF, m_fp);
}
else
{
ASSERT( m_eFileFormat == Utf8 );
; // could write UTF-8 header..
}
}
else if (m_uBytesWritten >= sizeof(WORD))
{
// check for Unicode byte-order mark 0xFEFF
WORD wBOM;
if (fread(&wBOM, sizeof(wBOM), 1, m_fp) == 1)
{
if (wBOM == 0xFEFF && m_eFileFormat == Unicode)
{
// log file already in Unicode format
(void)fseek(m_fp, 0, SEEK_END); // actually not needed because file is opened in 'Append' mode..
}
else if (wBOM != 0xFEFF && m_eFileFormat != Unicode)
{
// log file already in UTF-8 format
(void)fseek(m_fp, 0, SEEK_END); // actually not needed because file is opened in 'Append' mode..
}
else
{
// log file does not have the required format, create a new one (with the req. format)
ASSERT( (m_eFileFormat==Unicode && wBOM!=0xFEFF) || (m_eFileFormat==Utf8 && wBOM==0xFEFF) );
ASSERT( !m_bInOpenCall );
if (!m_bInOpenCall) // just for safety
{
m_bInOpenCall = true;
StartNewLogFile();
m_bInOpenCall = false;
}
}
}
}
}
return m_fp != NULL;
}
bool CLog::Log(LPCTSTR pszMsg, int iLen)
{
if (m_fp == NULL)
return false;
// don't use 'fputs' + '_filelength' -- gives poor performance
size_t uToWrite = ((iLen == -1) ? _tcslen(pszMsg) : (size_t)iLen)*sizeof(TCHAR);
size_t uWritten = fwrite(pszMsg, 1, uToWrite, m_fp);
bool bResult = !ferror(m_fp);
m_uBytesWritten += uWritten;
if (m_uBytesWritten >= m_uMaxFileSize)
StartNewLogFile();
else
fflush(m_fp);
return bResult;
}
bool CLog::Open()
{
if (m_fp != NULL)
return true;
m_fp = _tfsopen(m_strFilePath, _T("a+b"), _SH_DENYWR);
if (m_fp != NULL)
{
m_tStarted = time(NULL);
m_uBytesWritten = _filelength(fileno(m_fp));
#ifdef _UNICODE
if (m_uBytesWritten == 0)
{
// write Unicode byte-order mark 0xFEFF
fputwc(0xFEFF, m_fp);
}
else if (m_uBytesWritten >= sizeof(WORD))
{
// check for Unicode byte-order mark 0xFEFF
WORD wBOM;
if (fread(&wBOM, sizeof(wBOM), 1, m_fp) == 1)
{
if (wBOM == 0xFEFF)
{
// log file already in Unicode format
fseek(m_fp, 0, SEEK_END); // actually not needed because file is opened in 'Append' mode..
}
else
{
ASSERT( !m_bInOpenCall );
if (!m_bInOpenCall) // just for safety
{
m_bInOpenCall = true;
StartNewLogFile();
m_bInOpenCall = false;
}
}
}
}
#endif
}
return m_fp != NULL;
}
