• Andrew Edwards (7/7) Feb 26 2014 Request a small example of how to use getopt to accomplish the following...
• Tobias Pankrath (9/19) Feb 26 2014 This is not fully automated with getopt. You could use getopt to
• simendsjo (5/21) Feb 26 2014 args[0] is the program itself. As Tobias mention, you can check the
• Vladimir Panteleev (40/48) Feb 26 2014 import std.getopt;
• Andrew Edwards (2/46) Feb 26 2014 Thank you very much.

Andrew Edwards <ridimz yahoo.com> writes:

Request a small example of how to use getopt to accomplish the following:

[1] program subcommand //process subcommand with default arguments if any
[2] program -h subcommand //output help information about subcommand
[3] program subcommand --option1 --option2 true option3=log.txt // 
process subcommand with user specified options

Thanks,
Andrew

"Tobias Pankrath" <tobias pankrath.net> writes:

On Wednesday, 26 February 2014 at 09:57:19 UTC, Andrew Edwards 
wrote:
 Request a small example of how to use getopt to accomplish the 
 following:

 [1] program subcommand //process subcommand with default 
 arguments if any
 [2] program -h subcommand //output help information about 
 subcommand
 [3] program subcommand --option1 --option2 true option3=log.txt 
 // process subcommand with user specified options

 Thanks,
 Andrew

This is not fully automated with getopt. You could use getopt to 
parse all non-positional arguments and than parse the rest by 
hand.
--
getopt(args, ...);
--
Now, args[1] (or [0]?) should be "subcommand".

simendsjo <simendsjo gmail.com> writes:

On 02/26/2014 11:06 AM, Tobias Pankrath wrote:
 On Wednesday, 26 February 2014 at 09:57:19 UTC, Andrew Edwards wrote:
 Request a small example of how to use getopt to accomplish the following:

 [1] program subcommand //process subcommand with default arguments if any
 [2] program -h subcommand //output help information about subcommand
 [3] program subcommand --option1 --option2 true option3=log.txt //
 process subcommand with user specified options

 Thanks,
 Andrew

 This is not fully automated with getopt. You could use getopt to parse
 all non-positional arguments and than parse the rest by hand.
 --
 getopt(args, ...);
 --
 Now, args[1] (or [0]?) should be "subcommand".

args[0] is the program itself. As Tobias mention, you can check the 
first subcommand and use a different getopt strategy for each.

It's possible to say to getopt that it should not throw an error when it 
encounters unknown parameters so you can parse them yourself.

"Vladimir Panteleev" <vladimir thecybershadow.net> writes:

On Wednesday, 26 February 2014 at 09:57:19 UTC, Andrew Edwards 
wrote:
 Request a small example of how to use getopt to accomplish the 
 following:

 [1] program subcommand //process subcommand with default 
 arguments if any
 [2] program -h subcommand //output help information about 
 subcommand
 [3] program subcommand --option1 --option2 true option3=log.txt 
 // process subcommand with user specified options

import std.getopt;

void main(string[] args)
{
     bool help;
     getopt(args,
         "h|help", &help,
         config.stopOnFirstNonOption,
     );

     if (args.length == 1)
     {
         // Print general help and list of commands
         return;
     }

     auto subcommand = args[1];
     switch (subcommand)
     {
         case "subcommand":
         {
             if (help)
             {
                 // Print help for subcommand
                 return;
             }

             bool option1;
             string option2, option3;
             getopt(args,
                 "option1", &option1,
                 "option2", &option2,
                 "option3", &option3,
             );

             // Process subcommand with specified options

             break;
         }
         default:
             throw new Exception("Unknown subcommand "~ 
subcommand);
     }
}

Andrew Edwards <ridimz yahoo.com> writes:

On 2/26/14, 5:37 AM, Vladimir Panteleev wrote:
 On Wednesday, 26 February 2014 at 09:57:19 UTC, Andrew Edwards wrote:
 Request a small example of how to use getopt to accomplish the following:

 [1] program subcommand //process subcommand with default arguments if any
 [2] program -h subcommand //output help information about subcommand
 [3] program subcommand --option1 --option2 true option3=log.txt //
 process subcommand with user specified options

 import std.getopt;

 void main(string[] args)
 {
      bool help;
      getopt(args,
          "h|help", &help,
          config.stopOnFirstNonOption,
      );

      if (args.length == 1)
      {
          // Print general help and list of commands
          return;
      }

      auto subcommand = args[1];
      switch (subcommand)
      {
          case "subcommand":
          {
              if (help)
              {
                  // Print help for subcommand
                  return;
              }

              bool option1;
              string option2, option3;
              getopt(args,
                  "option1", &option1,
                  "option2", &option2,
                  "option3", &option3,
              );

              // Process subcommand with specified options

              break;
          }
          default:
              throw new Exception("Unknown subcommand "~ subcommand);
      }
 }

Thank you very much.