libcult/documentation/cli

The libcult command line interace library provides -mechanisms for extracting informtaion from the command line. The -following code fragment is from libcult/examples/cli:

- -

-namespace
-{
-  extern Char const help[] = "help";
-  extern Char const version[] = "version";
-  extern Char const outdir[] = "outdir";
-}
-
-typedef
-CLI::Options<help, Boolean,
-             version, Boolean,
-             outdir, String>
-Options;
-
-Int
-main (Int argc, Char* argv[])
-{
-  try
-  {
-    Options options (CLI::parse<Options> (argc, argv));
-
-    if (options.value<help> ())
-    {
-      cerr << "usage: " << argv[0] << " [--help] [--version] [--outdir <dir>]"
-           << endl;
-      return 0;
-    }
-
-    if (options.value<version> ())
-    {
-      cerr << argv[0] << " 1.2.3" << endl;
-      return 0;
-    }
-
-    if (String dir = options.value<outdir> ())
-    {
-      cerr << "outdir: " << dir << endl;
-    }
-  }
-  catch (CLI::UnexpectedOption const& e)
-  {
-    cerr << "unexpected option " << e.option () <<endl;
-  }
-  catch (CLI::OptionFormat const& e)
-  {
-    cerr << "bad format for " << e.option () << endl;
-  }
-}
-