/* $Header$
 *
 * This is GAT, something like GIT.
 * It's a VCS which is easy to use, fast and secure.
 *
 * This is release early code.  Use at own risk.
 *
 * It is meant as a replacement of CVS for my file repositories, to
 * make it more easy to distribute the code between all my machines
 * and gather back all those changes.  Very soon it shall compile
 * under Linux and Cygwin, such that it can be used under Windows,
 * too.
 *
 * Copyright (C)2005 by Valentin Hilbig
 * Based on ideas presented in GIT from Linus Torvalds.
 *
 * 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
 *
 * $Log$
 */

#include "tino/file.h"
#include "tino/fatal.h"
#include "tino/ex.h"
#include "tino/filetool.h"

#include "gat-lib.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <errno.h>

#define CMD(X,A,B,C,S)	static int cmd_##X(GAT, int, char **);
#include "gat-cmds.h"

static struct gat_cmd
  {
    const char	*name;
    int		minargs, maxargs;
    const char	*arghelp, *shorthelp;
    int		(*fn)(GAT g, int argc, char **argv);
  } cmds[] =
  {
#define CMD(X,A,B,C,S)	{ #X, A,B, C,S, cmd_##X },
#include "gat-cmds.h"
  };

static int
find_cmd(const char *s)
{
  int	i;

  for (i=sizeof cmds/sizeof *cmds; --i>=0; )
    if (!strcmp(s, cmds[i].name))
      return i;
  tino_exit("unknown command, try `help'");
  return -1;
}

static void
usage(const char *arg0)
{
  const char	*tmp;

  if ((tmp=strrchr(arg0, '/'))!=0 || (tmp=strrchr(arg0, '\\'))!=0)
    arg0	= tmp;

  fprintf(stderr,
	  "Usage: %s command [args...]\n"
	  "\ttry command `help' for help\n"
	  , arg0);
  exit(GAT_EXIT_USAGE);
}

int
main(int argc, char **argv)
{
  int	i;
  GAT	g;

  if (argc<2)
    usage(argv[0]);

  g	= GAT_init("gat", NULL, NULL);
  i	= find_cmd(argv[1]);

  argc	-= 2;
  if (argc<cmds[i].minargs ||
      (cmds[i].maxargs>=0 && argc>cmds[i].maxargs))
    tino_err("wrong number of arguments for %s", argv[1]);

  return cmds[i].fn(g, argc, argv+2);
}

static int
cmd_help(GAT g, int argc, char **argv)
{
  int	i;

  for (i=sizeof cmds/sizeof *cmds; --i>=0; )
    printf("%s %s\n\t%s\n", cmds[i].name, cmds[i].arghelp, cmds[i].shorthelp);
  return 0;
}

static int
cmd_add(GAT g, int argc, char **argv)
{
  int	i;

  for (i=0; i<argc; i++)
    GAT_add(g, argv[i]);
  GAT_flush(g);
  return 0;
}