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/****************************************************************************

 *                                                                          *

 *                         GNAT COMPILER COMPONENTS                         *

 *                                                                          *

 *                                A R G V                                   *

 *                                                                          *

 *                          C Implementation File                           *

 *                                                                          *

 *         Copyright (C) 1992-2009, Free Software Foundation, Inc.          *

 *                                                                          *

 * GNAT is free software;  you can  redistribute it  and/or modify it under *

 * terms of the  GNU General Public License as published  by the Free Soft- *

 * ware  Foundation;  either version 3,  or (at your option) any later ver- *

 * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *

 * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *

 * or FITNESS FOR A PARTICULAR PURPOSE.                                     *

 *                                                                          *

 * As a special exception under Section 7 of GPL version 3, you are granted *

 * additional permissions described in the GCC Runtime Library Exception,   *

 * version 3.1, as published by the Free Software Foundation.               *

 *                                                                          *

 * You should have received a copy of the GNU General Public License and    *

 * a copy of the GCC Runtime Library Exception along with this program;     *

 * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *

 * <http://www.gnu.org/licenses/>.                                          *

 *                                                                          *

 * GNAT was originally developed  by the GNAT team at  New York University. *

 * Extensive contributions were provided by Ada Core Technologies Inc.      *

 *                                                                          *

 ****************************************************************************/

/* Routines for accessing command line arguments from both the runtime

   library and from the compiler itself. In the former case, gnat_argc

   and gnat_argv are the original argc and argv values as stored by the

   binder generated main program, and these routines are accessed from

   the Ada.Command_Line package. In the compiler case, gnat_argc and

   gnat_argv are the values as modified by toplev, and these routines

   are accessed from the Osint package. */

/* Also routines for accessing the environment from the runtime library.

   Gnat_envp is the original envp value as stored by the binder generated

   main program, and these routines are accessed from the

   Ada.Command_Line.Environment package. */

#ifdef IN_RTS

#include "tconfig.h"

#include "tsystem.h"

#include <sys/stat.h>

#else

#include "config.h"

#include "system.h"

#endif

#include "adaint.h"

/* argc and argv of the main program are saved under gnat_argc and gnat_argv,

   envp of the main program is saved under gnat_envp.  */

int gnat_argc = 0;

const char **gnat_argv = (const char **) 0;

const char **gnat_envp = (const char **) 0;

#if defined (_WIN32) && !defined (RTX)

/* Note that on Windows environment the environ point to a buffer that could

   be reallocated if needed. It means that gnat_envp needs to be updated

   before using gnat_envp to point to the right environment space */

#include <stdlib.h>

/* for the environ variable definition */

#define gnat_envp (environ)

#endif

int

__gnat_arg_count (void)

{

  return gnat_argc;

}

int

__gnat_len_arg (int arg_num)

{

  if (gnat_argv != NULL)

    return strlen (gnat_argv[arg_num]);

  else

    return 0;

}

void

__gnat_fill_arg (char *a, int i)

{

  if (gnat_argv != NULL)

    strncpy (a, gnat_argv[i], strlen(gnat_argv[i]));

}

int

__gnat_env_count (void)

{

  int i;

  for (i = 0; gnat_envp[i]; i++)

    ;

  return i;

}

int

__gnat_len_env (int env_num)

{

  if (gnat_envp != NULL)

    return strlen (gnat_envp[env_num]);

  else

    return 0;

}

void

__gnat_fill_env (char *a, int i)

{

  if (gnat_envp != NULL)

    strncpy (a, gnat_envp[i], strlen (gnat_envp[i]));

}