/*
 *
 * Gnome popt routines.
 * (C) 1998 Red Hat Software
 *
 * Author: Elliot Lee
 */
#include <config.h>
#include <errno.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <glib.h>
#include <sys/stat.h>
#include <pwd.h>
#include "gnome-defs.h"
#include "libgnomeP.h"

static GArray *opt_tables = NULL;

/**
 * gnomelib_register_popt_table:
 * @options: a poptOption table to register
 * @description: description for this table of options.
 *
 * Registers the @options table of command line options for the GNOME command line
 * argument parser.
 */
void
gnomelib_register_popt_table (const struct poptOption *options,
			      const char *description)
{
	int i;
	struct poptOption includer = {NULL, '\0', POPT_ARG_INCLUDE_TABLE,
				      NULL, 0, NULL, NULL};
	includer.arg = (struct poptOption *)options;
	includer.descrip = (char *)description;
	
	if(opt_tables == NULL)
		opt_tables = g_array_new (TRUE, TRUE, sizeof (struct poptOption));
	
	/* prevent multiple registration of arg tables */
	for(i = 0; i < opt_tables->len; i++) {
		if (g_array_index (opt_tables, struct poptOption, i).arg == options)
			return;
	}
	
	g_array_append_val (opt_tables, includer);
}

/**
 * gnomelib_parse_args:
 * @argc: the argument count to parse
 * @argv: a vector with the argument values
 * @popt_flags: popt flags that control the parse process
 *
 * Parses the arguments in argv according to all of the registered
 * tables.
 *
 * Returns a poptContext to the remaining arguments.
 */
poptContext
gnomelib_parse_args (int argc, char *argv[], int popt_flags)
{
	poptContext retval;
	int nextopt;

	/* On non-glibc systems, this is not set up for us.  */
	if (!program_invocation_name) {
		char *arg;
	  
		program_invocation_name = argv[0];
		arg = strrchr (argv[0], '/');
		program_invocation_short_name =
			arg ? (arg + 1) : program_invocation_name;
	}

	retval = poptGetContext(gnome_app_id, argc, argv,
				(struct poptOption *)opt_tables->data,
				popt_flags);

	poptReadDefaultConfig(retval, TRUE);

	while((nextopt = poptGetNextOpt(retval)) > 0)
		/* do nothing */ ;

	if(nextopt != -1) {
		printf(_("Error on option %s: %s.\nRun '%s --help' to see a full list of available command line options.\n"),
		       poptBadOption(retval, 0),
		       poptStrerror(nextopt),
		       argv[0]);
		exit(1);
	}

	g_array_free(opt_tables, TRUE); opt_tables = NULL;

	return retval;
}