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LogXML - A XML Logging Class

, 11 May 2003
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A simple XML style logging class for all purposes.


Almost everybody needs sometimes something like a logging class. Me too. That is why I wrote such a class to do my logging although there are already some very convenient logging classes like CProtocol by jazper. But I thought of some general approach: Logging with XML.


The probably most interesting point is the possibility to log into a structure. Now you can log in a fairly natural way: simply go down one level if you call a function and after that go up and you will get a log structure that resembles your program's calling tree. All log entries will automatically get the right place.


Using LogXML is not very difficult. First of all:

  #include "LogXML.h"
Now you can instantiate LogXML by:

LogXML* log = new LogXML("LogFileName.xml", "ApplicationName");
There are several ways to write a Log Entry, some kind of Log Record can be written by:

log->Log("Error: Something is not correct. Please Fix.", // Entry
         __FILE__,               // Filename of Source File<
         "myLoggingFunction()"); // Function Name
Or you can write only one line by:

log->WriteLine("TagName", "This is your Log Entry");

The output (log file) of these examples is:

<?xml-stylesheet href="Log.xsl" type="text/xsl" ?>
        <Entry>Log File opened</Entry>
        <Entry>Error: Something is not correct. Please Fix.</Entry>
    <TagName>This is your Log Entry</TagName>
        <Entry>Log File closed</Entry>


To use such a log file you can use a XML parser like XPath or everything else you want. To convert a file produced by LogXML to something human-readable you can use for example XSL. Since my knowledge of XSL is not the best, I only managed to write a file named Log.XSL that shows Log Records of Level 1, i.e. do not use LogXML::goDown() and use only LogXML::Log() to write entries if you want to use it. And this is our sample Log File shown by Internet Explorer (6.0):


  • May 12, 2003 - First Release 1.0.0


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Web Developer
United Kingdom United Kingdom
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Comments and Discussions

Questionquestion: the error can be catched? Pin
liuty200612-May-03 9:17
memberliuty200612-May-03 9:17 
AnswerRe: question: the error can be catched? Pin
whizer13-May-03 6:41
memberwhizer13-May-03 6:41 

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