root/trunk/examples/util/config/Real.d

/*******************************************************************************

    License:    Boost Software License, v. 1.0
                Academic Free License, v. 3.0
                BSD License

    Authors:    Marcin Kuszczak, www.zapytajmnie.com (author's christian site)
                This software is inspired and partially based on Boost C++
                library named 'program_options' and created by Vladimir Prus.

    Version:    0.9.1
    Date:       30-Apr-2008

    History:    0.9.0 (08-Oct-2007) -   initial public version

    Description:
                Real-world example showing more complicated case.

 ******************************************************************************/

import std.stdio;

import doost.util.config.ProgramOptions;
import doost.util.config.CommandLineStorage;

//------------------------------------------------------------------------------

/*******************************************************************************
    Program entry point
 ******************************************************************************/
void main(char[][] args) {
    try {
        auto desc = new RegularOptions("Allowed options");
        desc.options()
            // First parameter describes option name/alias name
            // The second is parameter to option
            // The third is description
            ("help,h", "print usage message")
            ("output,o", define!(char[]), "pathname for output")
            ("macrofile,m", define!(char[]), "full pathname of macro.h")
            ("two,t", boolSwitch, "preprocess both header and body")
            ("body,b", boolSwitch, "preprocess body in the header context")
            ("libmakfile,l", define!(char[]), "write include makefile for library")
            ("mainpackage,p", define!(char[]), "output dependency information")
            ("depends,d", define!(char[]).defaultValue("deps_file"), "write dependencies to <pathname>")
            ("sources,s", define!(char[]).defaultValue("src_file"), "write source package list to <pathname>")
            ("root,r", define!(char[]).defaultValue("."), "treat <dirname> as project root directory")
        ;

        auto po =   (new ProgramOptions).next(
                        (new CommandLineStorage(args))
                            .options(desc)
                    );

        po.connect;

        if ("help" in po) {
            writefln(po);
            return 0;
        }

        conflictingOptions(po, "output", "two");
        conflictingOptions(po, "output", "body");
        conflictingOptions(po, "output", "mainpackage");
        conflictingOptions(po, "two", "mainpackage");
        conflictingOptions(po, "body", "mainpackage");

        conflictingOptions(po, "two", "body");
        conflictingOptions(po, "libmakfile", "mainpackage");
        conflictingOptions(po, "libmakfile", "mainpackage");

        dependantOptions(po, "depends", "mainpackage");
        dependantOptions(po, "sources", "mainpackage");
        dependantOptions(po, "root", "mainpackage");

        writefln ("two = ", po["two"].as!(bool)());

        po.disconnect;
    }

    catch(ProgramOptionsException e) {
        writefln(e);
    }
}