/*
*$Id: user_input.c,v 2.2.4.1 2006/10/19 04:37:08 hamish Exp $
************************************************************
* MODULE: r.le.trace/user_input.c                          *
*         Version 5.0                Nov. 1, 2001          *
*				                           *
* AUTHOR: W.L. Baker, University of Wyoming                *
*         BAKERWL@UWYO.EDU                                 *
*                                                          *
* PURPOSE: To obtain information from the user about what  *
*          information is desired                          *
*				                           *
* COPYRIGHT: (C) 2001 by W.L. Baker                        *
*                                                          *
* This program is free software under the GNU General      *
* Public License(>=v2).  Read the file COPYING that comes  *
* with GRASS for details                                   *
*				                           *
************************************************************/

#include <grass/config.h>
#include "r.le.trace.h"

extern struct CHOICE *choice ;

void user_input (int argc, char **argv)
{
   struct Flag *bound;
   struct Flag *trace;
   struct Option *name;
   struct Option *out;

   bound = G_define_flag();
   bound->key		= 'p';
   bound->description	= "Include sampling area boundary as perimeter";

   trace = G_define_flag();
   trace->key          	= 't';
   trace->description  	= "Use 4 neighbor tracing instead of 8 neighbor";

   name = G_define_option() ;
   name->key          = "map" ;
   name->description  = "Raster map to be analyzed";
   name->type         = TYPE_STRING;
   name->gisprompt    = "old,cell,raster";
   name->required     = YES ;

   out = G_define_option() ;
   out->key = "out" ;
   out->description = "Name of output file to store patch data";
   out->type = TYPE_STRING ;
   out->required = NO ;

   if (G_parser(argc,argv))
      exit(EXIT_FAILURE);


   G_strcpy(choice->fn,name->answer) ;

   if (out->answer)
      G_strcpy(choice->out,out->answer) ;
   else
      G_strcpy(choice->out,"") ;
   
					/* if the 4 neighbor tracing flag -t
					   is specified, then set the 
					   choice->trace flag to 1 */

   choice->trace = 1;
   if (trace->answer)
      choice->trace = 0;

					/* if the -p flag is specified, then
					   set the choice->perim2 flag to 0 */

   if (bound->answer)
      choice->perim2 = 0;
   else
      choice->perim2 = 1;

}