C++记录debug信息的log类

// LogFile.h: interface for the CLogFile class.
//
// Written by Bjarke Viksoe (bjarke@viksoe.dk)
// Copyright (c) 2000.
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed by any means PROVIDING it is
// not sold for profit without the authors written consent, and
// providing that this notice and the authors name is included.
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability if it causes any damage to you or your
// computer whatsoever. It's free, so don't hassle me about it.
//
// Beware of bugs.
////////////////////////////////////////////////////////////////////////

#if !defined(AFX_LOGFILE_H__0EE45201_E8F9_11D1_93C1_241C08C10000__INCLUDED_)
#define AFX_LOGFILE_H__0EE45201_E8F9_11D1_93C1_241C08C10000__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

// A small class implementing a debug log file.
class CLogFile : public CObject
{
public:
CLogFile();
CLogFile(LPCTSTR Filename);
virtual ~CLogFile();

// Methods
public:
// Creates (removes previous) log file.
RETCODE Create(LPCTSTR Filename, LPCTSTR Text);
// Set the filename of the log fil to use.
RETCODE SetFilename(LPCTSTR Filename);
// Creates or appends to an exisiting log file.
RETCODE AppendText(LPCTSTR Text, ...);
// Writes System Information to the log
RETCODE LogSystemInformation();

// Variables
protected:
CString m_Filename;     // The log file we're currently writing to.
};

#endif // !defined(AFX_LOGFILE_H__0EE45201_E8F9_11D1_93C1_241C08C10000__INCLUDED_)

1 // LogFile.cpp: implementation of the CLogFile class.
2 //
3 // A small class which can be used for debug logs.
4 //
5 //////////////////////////////////////////////////////////////////////
6
7 #include "stdafx.h"
8 #include "LogFile.h"
9
10 #ifdef _DEBUG
11 #undef THIS_FILE
12 static char THIS_FILE[]=__FILE__;
13 #define new DEBUG_NEW
14 #endif
15
16 //////////////////////////////////////////////////////////////////////
17 // Construction/Destruction
18 //////////////////////////////////////////////////////////////////////
19
20 CLogFile::CLogFile()
21 {
22 }
23
24 CLogFile::CLogFile(LPCTSTR Filename)
25 {
26    SetFilename( Filename );
27 }
28
29 CLogFile::~CLogFile()
30 {
31 }
32
33
34 //////////////////////////////////////////////////////////////////////
35 // Methods
36 //////////////////////////////////////////////////////////////////////
37
38 RETCODE CLogFile::Create(LPCTSTR Filename, LPCTSTR Text)
39 {
40    ASSERT( Filename );
41    ASSERT( Text );
42    m_Filename = Filename;
43    ASSERT( !m_Filename.IsEmpty() );
44    if( m_Filename.IsEmpty() ) return RET_INVALIDARGS;
45    // Write text to (text)file
46    CStdioFile f;
47    TRY
48    {
49       BOOL res = f.Open( Filename, CFile::modeCreate|CFile::modeWrite|CFile::typeText );
50       if( res ) {
51          f.WriteString( Text );
52          f.WriteString( _T("\n") );
53          f.Close();
54       };
55    }
56    CATCH_ALL(e)
57    {
58       f.Abort();
59 #ifdef _DEBUG
60       e->ReportError();
61 #endif
62       return RET_ERROR;
63    }
64    END_CATCH_ALL;
65    return RET_OK;
66 };
67
68 RETCODE CLogFile::AppendText(LPCTSTR Text, ...)
69 {
70    ASSERT(AfxIsValidString(Text));
71    ASSERT(!m_Filename.IsEmpty());
72    if( m_Filename.IsEmpty() ) return RET_NOTINITIALIZED;
73    // Append text to (text)file
74    CStdioFile f;
75    CString sText;
76    va_list args;
77    va_start(args, Text);
78    sText.FormatV(Text, args);
79    TRY
80    {
81       BOOL res = f.Open( m_Filename, CFile::modeCreate|CFile::modeNoTruncate|CFile::modeWrite|CFile::typeText );
82       if( res ) {
83          f.SeekToEnd();
84          f.WriteString( sText );
85          f.WriteString( _T("\n") );
86          f.Close();
87       };
88    }
89    CATCH_ALL(e)
90    {
91       f.Abort();
92 #ifdef _DEBUG
93       e->ReportError();
94 #endif
95       return RET_FILEERROR;
96    }
97    END_CATCH_ALL;
98    return RET_OK;
99 };
100
101 RETCODE CLogFile::SetFilename(LPCTSTR Filename)
102 // Sets the log filename.  A new log file will
103 // be created if the file does not exist.
104 {
105    ASSERT(AfxIsValidString(Filename));
106    m_Filename = Filename;
107    if( m_Filename.IsEmpty() ) return RET_INVALIDARGS;
108    return RET_OK;
109 }
110
111 RETCODE CLogFile::LogSystemInformation()
112 // Write some standard system information to
113 // the log file.
114 {
115    ASSERT(!m_Filename.IsEmpty());
116    if( m_Filename.IsEmpty() ) return RET_NOTINITIALIZED;
117
118    SYSTEMTIME time;
119    ::GetLocalTime( &time );
120    AppendText(_T("Date: %04d-%02d-%02d Time: %02d:%02d:%02d"),
121               time.wYear,time.wMonth,time.wDay,time.wHour,time.wMinute,time.wSecond);
122
123    OSVERSIONINFO verinfo;
124    verinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
125    ::GetVersionEx(&verinfo);
126    AppendText(_T("Win%s Version %d.%.2d (build %d) %s\n"),
127       (verinfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? _T("NT") : _T("32")),
128       verinfo.dwMajorVersion,
129       verinfo.dwMinorVersion,
130       verinfo.dwBuildNumber,
131       verinfo.szCSDVersion);
132
133    SYSTEM_INFO sysinfo;
134    LPCTSTR pszProcessor;
135    ::GetSystemInfo(&sysinfo);
136    switch( sysinfo.dwProcessorType ) {
137    case PROCESSOR_INTEL_386:
138    case PROCESSOR_INTEL_486:
139    case PROCESSOR_INTEL_PENTIUM:
140       pszProcessor = _T("Intel ");
141       break;
142    case PROCESSOR_MIPS_R4000:
143       pszProcessor = _T("MIPS R");
144       break;
145    case PROCESSOR_ALPHA_21064:
146       pszProcessor = _T("DEC Alpha ");
147       break;
148    default:
149       pszProcessor = _T("Chipset ");
150       break;
151    }
152    return AppendText(_T("%s%d, %d Processor(s)\n"),
153       (LPCTSTR)pszProcessor,
154       sysinfo.dwProcessorType,
155       sysinfo.dwNumberOfProcessors);
156 };