[jira] Created: (LOG4NET-216) Write a simple option parser for pattern converters

["Ron Grabowski (JIRA)" <ji...@apache.org>]

Write a simple option parser for pattern converters
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                 Key: LOG4NET-216
                 URL: https://issues.apache.org/jira/browse/LOG4NET-216
             Project: Log4net
          Issue Type: New Feature
          Components: Other
    Affects Versions: 1.2.11
            Reporter: Ron Grabowski
            Priority: Minor
             Fix For: 1.2.11


There isn't a standard way of passing in more than just a single value into pattern converters:

 %logger{2}

Create a simple parser that can split out the Option string:

    public class RepeatConverter : PatternConverter
    {
        protected override void Convert(TextWriter writer, object state)
        {
            SimpleOptionParser optionParser = new SimpleOptionParser(Option);
            char character = optionParser.GetChar("Character");
            int repeat = optionParser.GetInt("Repeat", 1); // defaults to 1

            writer.Write(new String(character, repeat));
        }
    }

Where the pattern might look something like this in the config file:

 %repeat{Character:a,Repeat,10}

that would be translated into:

 aaaaaaaaaa

Are there more established ways of encoding multiple values in a string?

 %repeat{character:a;repeat:10}
 %repeat{character=a:char,repeat=10:int}
 ???

Maybe this will allow the next next version of log4net to support nested patterns...

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