[LOG4NET-216] Write a simple option parser for pattern converters

• Type: New Feature
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.2.11
• Fix Version/s: 1.2/2.0 Maintenance Release
• Component/s: Other
• Assignee: Unassigned
• Reporter: liu ron
• Created: 28/May/09 04:06
• Updated: 04/Apr/20 22:28

Description

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...