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88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
// Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
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//
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// This file is part of the VNC system.
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//
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// The VNC system is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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//
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// If the source code for the VNC system is not available from the place
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// whence you received this file, check http://www.uk.research.att.com/vnc or
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// contact the authors on vnc@uk.research.att.com for information on obtaining it.
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//
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// This is an object and macros which provide general logging and debugging functions.
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// It can log to a file, to a new console, and/or to debug - others maybe to follow.
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// Every log object has a logging level (which can be changed).
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// Only log requests with a high enough level attached get logged. So the
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// level can be thought of as 'amount of detail'.
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// We use Unicode-portable stuff here for compatibility with WinCE.
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//
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// Typical use:
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//
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// Log vnclog;
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// vnclog.SetFile( _T("myapp.log") );
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// ...
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// vnclog.Print(2, _T("x = %d\n"), x);
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//
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#pragma once
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#include <stdarg.h>
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class Log
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{
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public:
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// Logging mode flags:
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static const int ToDebug;
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static const int ToFile;
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static const int ToConsole;
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// Create a new log object.
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// Parameters as follows:
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// mode - specifies where output should go, using combination
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// of flags above. ToConsole won't do anything on CE.
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// level - the default level
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// filename - if flag Log::ToFile is specified in the type,
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// a filename must be specified here.
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// append - if logging to a file, whether or not to append to any
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// existing log.
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Log(int mode = ToDebug, int level = 1, LPTSTR filename = NULL, bool append = false);
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inline void Print(int level, LPTSTR format, ...) {
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if (level > m_level) return;
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va_list ap;
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va_start(ap, format);
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ReallyPrint(format, ap);
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va_end(ap);
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}
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// Change the log level
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void SetLevel(int level);
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// Change the logging mode
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void SetMode(int mode);
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// Change or set the logging filename. This enables ToFile mode if
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// not already enabled.
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void SetFile(LPTSTR filename, bool append = false);
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virtual ~Log();
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private:
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void ReallyPrint(LPTSTR format, va_list ap);
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void CloseFile();
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bool m_tofile, m_todebug, m_toconsole;
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int m_level;
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HANDLE hlogfile;
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};
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