Implement an XML-based LOG class

Many programs have a log feature, you can save some information at runtime to a file, so you can view the information at Release, you can also help debug, the following class accepts a file name as a parameter, you can make information XML file, then you can see the information of the HTML format with the XSL file AppLog.h

#include

#include

#include

Using namespace std;

Class capplog

{

PUBLIC:

CAPPLOG (Char * filename);

Bool LogMessage (char * msg, ...);

Virtual ~ CAPPLOG ();

Private:

Void Writexmlhead ();

Void WriteXMlend ();

Void BeginxmlRecord (OFStream & OS);

Void EndxmlRecord (OFSTream & OS);

String m_sfilename;

}

Implement AppLog.cpp

Capplog :: CAPPLOG (Char * filename)

{

IF (filename)

This-> m_sfilename = filename;

Else

m_sfilename = "app.xml";

Writexmlhead ();

}

Capplog :: ~ CAPPLOG ()

{

Writexmlend ();

}

Bool capplog :: LogMessage (char * msg, ...)

{

OFSTREAM OS (m_sfilename.c_str (), iOS_BASE :: App | iOS_BASE :: OUT;

IF (OS)

{

BeginxmlRecord (OS);

VA_LIST Argp;

VA_START (Argp, MSG);

Char sztmp [1024];

vSprintf (SZTMP, MSG, Argp);

VA_END (ARGP);

OS << SZTMP;

ENDXMLRECORD (OS);

Os.Close ();

Return True;

}

Return False;

}

Void Capplog :: Writexmlhead ()

{

String head = " / n"

" / n"

/ n / t Appname / n ";

OFSTREAM OS (m_sfilename.c_str (), iOS_BASE :: App | iOS_BASE :: OUT;

IF (OS)

{

OS << Head << Endl;

Os.Close ();

}

}

Void Capplog :: WriteXmlend ()

{

String end = "";

OFSTREAM OS (m_sfilename.c_str (), iOS_BASE :: App | iOS_BASE :: OUT;

IF (OS)

{

OS << End << Endl;

Os.Close ();

}

}

Void Capplog :: BeginxmlRecord (OFStream & OS) {

String msghead = "/ t / r / n";

Time_t now;

Now = Time (null);

String Stime = CTIME (& now);

INT n = stime.find ('/ n');

IF (n> 0)

{

Stime [n] = '/ 0';

}

String msgtime = "/ t / t ";

Msgtime = STIME;

OS << msghead << msgtime;

Msgtime = " / R / N / T / T ";

OS << msgtime;

Return;

}

Void Capplog :: EndxmlRecord (OFStream & OS)

{

String msgend = " / r / n / t / r / n";

OS << msgend;

}

When using:

CAPPLOG Applog ("C: //log.xml");

Char * s = "hello";

INT n = 100;

Applog.LogMessage ("My Log Info% D% S", N, S);

Place this log.xsl file in the same directory