// Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
//
// This file is part of the VNC system.
//
// The VNC system is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
//
// If the source code for the VNC system is not available from the place
// whence you received this file, check http://www.uk.research.att.com/vnc or
// contact the authors on vnc@uk.research.att.com for information on obtaining it.
//
// Log.cpp: implementation of the Log class.
//
//////////////////////////////////////////////////////////////////////
#include "stdhdrs.h"
#include "Log.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
const int Log::ToDebug = 1;
const int Log::ToFile = 2;
const int Log::ToConsole = 4;
const static int LINE_BUFFER_SIZE = 1024;
Log::Log(int mode, int level, LPTSTR filename, bool append)
{
hlogfile = NULL;
m_todebug = false;
m_toconsole = false;
m_tofile = false;
SetMode(mode);
if (mode & ToFile) {
SetFile(filename, append);
}
}
void Log::SetMode(int mode) {
if (mode & ToDebug)
m_todebug = true;
else
m_todebug = false;
if (mode & ToFile) {
m_tofile = true;
} else {
CloseFile();
m_tofile = false;
}
#ifdef _WIN32_WCE
m_toconsole = false;
#else
if (mode & ToConsole) {
if (!m_toconsole)
AllocConsole();
m_toconsole = true;
} else {
m_toconsole = false;
}
#endif
}
void Log::SetLevel(int level) {
m_level = level;
}
void Log::SetFile(LPTSTR filename, bool append)
{
// if a log file is open, close it now.
CloseFile();
m_tofile = true;
// If filename is NULL or invalid we should throw an exception here
hlogfile = CreateFile(
filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
if (hlogfile == INVALID_HANDLE_VALUE) {
// We should throw an exception here
m_todebug = true;
m_tofile = false;
Print(0, _T("Error opening log file %s\n"), filename);
}
if (append) {
SetFilePointer( hlogfile, 0, NULL, FILE_END );
} else {
SetEndOfFile( hlogfile );
}
}
// if a log file is open, close it now.
void Log::CloseFile() {
if (hlogfile != NULL) {
CloseHandle(hlogfile);
hlogfile = NULL;
}
}
#ifndef UNDER_CE
// Non-CE version
void Log::ReallyPrint(LPTSTR format, va_list ap)
{
TCHAR line[LINE_BUFFER_SIZE];
_vstprintf(line, format, ap);
if (m_todebug) OutputDebugString(line);
if (m_toconsole) {
DWORD byteswritten;
WriteConsole(GetStdHandle(STD_OUTPUT_HANDLE), line, _tcslen(line)*sizeof(TCHAR), &byteswritten, NULL);
};
if (m_tofile && (hlogfile != NULL)) {
DWORD byteswritten;
WriteFile(hlogfile, line, _tcslen(line)*sizeof(TCHAR), &byteswritten, NULL);
}
}
#else
// CE version
void Log::ReallyPrint(LPTSTR format, va_list ap)
{
TCHAR line[LINE_BUFFER_SIZE];
_vstprintf(line, format, ap);
if (m_todebug) OutputDebugString(line);
if (m_tofile && (hlogfile != NULL)) {
DWORD byteswritten;
// Log file is more readable if non-unicode!
char ansiline[LINE_BUFFER_SIZE];
int origlen = _tcslen(line);
int newlen = WideCharToMultiByte(
CP_ACP, // code page
0, // performance and mapping flags
line, // address of wide-character string
origlen, // number of characters in string
ansiline, // address of buffer for new string
255, // size of buffer
NULL, NULL );
WriteFile(hlogfile, ansiline, newlen, &byteswritten, NULL);
}
}
#endif
Log::~Log()
{
CloseFile();
}
Log theLog;