[Mono-list] Command Line Parsing

[Abe Gillespie]

This works really well.  I had to make one small change though to get
it to work with my non-single-character arguments.

ApplicationCommandLine.cs, Ln 142 -
Change to: string argValue = args[count];

Thanks for the help!
-Abe

On 11/8/05, matt raffel <matt.raffel at mindspring.com> wrote:
>  take a look at to
> http://www.mindspring.com/~matt.raffel/code/NET/
>
>  There are 3 classes that might help you
>  ApplicationCommandLine.cs
>  CommandlineArgument.cs
>  CommandlineException.cs
>
>  To use them do something like this:
>
>
>  First build an array of acceptable commandline arguements, such as ...
>
>
>  ApplicationCommandLine   _cmdProcessor = new ApplicationCommandLine();
>
>  // create the help argument
>  _cmdProcessor.AddArg(new CommandLineArgument("?", "prints help"));
>
>  // create the toggled argument of erase only or overwrite file options
>  SwitchableCommandLineArgument eraseOnly = new
> SwitchableCommandLineArgument("e", "only erases the file,
> content IS NOT overwritten first");
>  SwitchableCommandLineArgument overwriteFile = new
> SwitchableCommandLineArgument("w", "overwrites the file
> prior to erasing [default]");
>  eraseOnly.SwitchArg = overwriteFile;
>  overwriteFile.SwitchArg = eraseOnly;
>  overwriteFile.Selected = true;
>  _cmdProcessor.AddArg(eraseOnly);
>  _cmdProcessor.AddArg(overwriteFile);
>
>  // create an options
>  _cmdProcessor.AddArg(new CommandLineArgument("z", "overwrites with
> zeroes"));
>
>  // create an option that takes data
>  _cmdProcessor.AddArg(new DataCommandLineArgument("n", "number of times the
> file should be overwritten"));
>
>
>
>
>  then you need to process the command line by calling
>
>  // assuming args is the string[] from main
>  _cmdProcessor.ParseCmdLineToArgs(args);
>
>  then you need to loop through to find the ones that have been set.  I do
> something like this
>
>  foreach(CommandLineArgument argument in _cmdProcessor)
>  {
>  if (true == argument.Selected)
>  {
>      char ch = argument.Argument.ToString().ToCharArray()[0];
>      switch (ch)
>      {
>          case 'z':
>              // do something
>              break;
>          case '?':
>              PrintHelp();
>              break;
>          default:
>              throw new Exception(String.Format("found an weird arugment
> {0}", ch));
>      }
>  }
>
>
>
>  There maybe better ways but this works for me.  I use it in my command line
> tools all the time.  Hope it helps...
>
>  Matt
>
>
>  Abe Gillespie wrote:
>
> 1. Is there a utility class out there that helps parse command line
> arguments in a standard way?
> 2. I think I ran into a bug playing around with the command line.
> When I send an asterisk "*" as one of the arguments I get some weird
> stuff. On Windows it seems to work ok. Try the following with an
> asterisk as one of the args:
>
> using System;
> class Program
> {
>  static void Main(string[] args)
>  {
>  foreach (string s in args)
>  Console.WriteLine(s);
>  }
> }
>
> Thanks.
> -Abe
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