GOption-multiple arguments with exclude parameters

[Randima Niroshini <randima student unsw edu au>]

Hi all,

I would like to know on passing commandline arguments in different contexts
using GOption.
For an example passing one argument( 1 & 2) and multiple arguments(3) with
excluded parameter as follows.
	1) ./parser --scan [FILE]
	2) ./parser --parse [FILE]
However, it should be also possible to execute bothoptions at once,without
specifying expected file name twice.
	3) ./parser --parse --scan [FILE]

1 & 2 cases are pretty straightforward to handle with GOption, but would like to
hear about a mechanism to handle the 3 rd case.

but,according to the way I used GOption command line parsing, I cannot achieve
the above.

Here's the code I used..

  gboolean gbverbose = FALSE;
  gboolean gbversion = FALSE;
  gchar *gcparse = FALSE;
  gchar *gcscan=FALSE;
  
  GError *error = NULL;
  
  GOptionEntry options[] = {
    { "verbose", 0, 0, G_OPTION_ARG_NONE, &gbverbose, "Add verbose output to
standard log", NULL },
    { "version", 0, 0, G_OPTION_ARG_NONE, &gbversion, "Print version information
on standard output", NULL },
    { "parse", 0, 0, G_OPTION_ARG_FILENAME, &gcparse, "Parse the program, print
errors on standard error", NULL },       
    { "scan", 0, 0, G_OPTION_ARG_FILENAME, &gscan, "Scan the file", NULL }
    { NULL }
  };
  
  GOptionContext *ctx;
  /* Add the main entries table to the context, providing a name. 
   */
  ctx = g_option_context_new("-  The file scanning & parsing"); 
  g_option_context_add_main_entries(ctx, options, "Parser");
  g_option_context_parse(ctx, &argc, &argv, &error);
  g_option_context_free(ctx);
  
  if (error) {
    fprintf (stderr, "parser: %s\nTry `parser --help' for more information\n",
error->message);
    g_error_free (error);
    return 0;
  }
  
  ...
  ...
  
  Please let me know any ideas on this.
  
  Thanks,
  
  Randima