/*
    Copyright (C) 2000  Marco Ziech (mmz@gmx.net)
    Copyright (C) 2000  Ross Combs (rocombs@cs.nmsu.edu)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#include "common/setup_before.h"
#ifdef HAVE_STDDEF_H
# include <stddef.h>
#else
# ifndef NULL
#  define NULL ((void *)0)
# endif
#endif
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
#endif
#include "compat/exitstatus.h"
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
#endif
#include <errno.h>
#include "compat/strerror.h"
#include "tga.h"
#include "fileio.h"
#include "common/version.h"
#include "common/setup_after.h"


static void usage(char const * progname)
{
    fprintf(stderr,
            "usage: %s [<options>] [--] [<TGA file>]\n"
            "    -h, --help, --usage  show this information and exit\n"
            "    -v, --version        print version number and exit\n",progname);
    
    exit(STATUS_FAILURE);
}


extern int main(int argc, char * argv[])
{
    char const * tgafile=NULL;
    FILE *       fp;
    int          a;
    int          forcefile=0;
    char         dash[]="-"; /* unique address used as flag */
    
    if (argc<1 || !argv || !argv[0])
    {
        fprintf(stderr,"bad arguments\n");
        return STATUS_FAILURE;
    }
    
    for (a=1; a<argc; a++)
        if (forcefile && !tgafile)
            tgafile = argv[a];
        else if (strcmp(argv[a],"-")==0 && !tgafile)
            tgafile = dash;
        else if (argv[a][0]!='-' && !tgafile)
            tgafile = argv[a];
        else if (forcefile || argv[a][0]!='-' || strcmp(argv[a],"-")==0)
        {
            fprintf(stderr,"%s: extra file argument \"%s\"\n",argv[0],argv[a]);
            usage(argv[0]);
        }
        else if (strcmp(argv[a],"--")==0)
            forcefile = 1;
        else if (strcmp(argv[a],"-v")==0 || strcmp(argv[a],"--version")==0)
        {
            printf("version "BNETD_VERSION"\n");
            return STATUS_SUCCESS;
        }
        else if (strcmp(argv[a],"-h")==0 || strcmp(argv[a],"--help")==0 || strcmp(argv[a],"--usage")
==0)
            usage(argv[0]);
        else
        {
            fprintf(stderr,"%s: unknown option \"%s\"\n",argv[0],argv[a]);
            usage(argv[0]);
        }
    
    if (!tgafile)
	tgafile = dash;
    
    if (tgafile==dash)
	fp = stdin;
    else
	if (!(fp = fopen(tgafile,"r")))
	{
	    fprintf(stderr,"%s: could not open TGA file \"%s\" for reading (fopen: %s)\n",argv[0],tgafile,strerror(errno));
	    return STATUS_FAILURE;
	}
    
    {
	t_tgaimg * tgaimg;
	
	file_rpush(fp);
	if (!(tgaimg = load_tgaheader()))
	{
	    fprintf(stderr,"%s: could not load TGA header\n",argv[0]);
	    if (tgafile!=dash && fclose(fp)<0)
		fprintf(stderr,"%s: could not close file \"%s\" after reading (fclose: %s)\n",argv[0],tgafile,strerror(errno));
	    return STATUS_FAILURE;
	}
	print_tga_info(tgaimg,stdout);
	file_rpop();
    }
    
    if (tgafile!=dash && fclose(fp)<0)
	fprintf(stderr,"%s: could not close file \"%s\" after reading (fclose: %s)\n",argv[0],tgafile,strerror(errno));
    return STATUS_SUCCESS;
}