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/****************************************************************************/
/* */
/* GNAT COMPILER TOOLS */
/* */
/* G N A T C H O P */
/* */
/* C Implementation File */
/* */
/* $Revision: 1.2 $ */
/* */
/* Copyright (C) 1996 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 2, 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. See the GNU General Public License */
/* for more details. You should have received a copy of the GNU General */
/* Public License distributed with GNAT; see file COPYING. If not, write */
/* to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, */
/* MA 02111-1307, USA. */
/* */
/* GNAT was originally developed by the GNAT team at New York University. */
/* It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). */
/* */
/****************************************************************************/
/*
* This program is for Open/VMS Alpha. The GNAT spawn routine on VMS uses the
* fork/exec calls, but they can't handle command files, so we have this
* wrapper program that gets execed instead and then uses the VMS lib$spawn
* routine to spawn gnatchop.com. This program is GNAT spawned from gnatcmd,
* and is not needed when invoking gnatchop.com directly. Since a .com
* extension appears (alphabetically) before a .exe extension, there is no
* confusion by DCL.
*/
#include "config.h"
extern char* locate_regular_file();
typedef struct dsc {unsigned short len, mbz; char *adr; } Descr;
main (argc, argv)
int argc;
char *argv[];
{
int i;
int len = 0;
char *buff;
Descr cmd;
char *chopspec;
char *path_val = TO_NORMAL_FILE_SPEC (getenv ("VAXC$PATH"));
char *apath_val = alloca (strlen (path_val) + 1);
strcpy (apath_val, path_val);
chopspec = TO_HOST_FILE_SPEC (locate_regular_file
("gnatchop.com", apath_val));
/*
* Figure out how many bytes of commands and args.
*/
len = strlen (chopspec) + 1;
for (i=1; i<argc; i++)
len = len + strlen (argv [i]) + 1;
buff = (char *) malloc (len);
/*
* Command procedures must start with @.
*/
buff [0] = '@';
/*
* We know that exec() puts the directory we are in and all that good
* stuff in argv[0].
*/
strcpy (&buff [1], chopspec);
/*
* Find the switches and put them first since that is what gnatchop.com
* expects, and not what gnatcmd does.
*/
for (i=1; i<argc; i++)
if (argv[i][0] == '-')
{
strcat (buff, " ");
strcat (buff, argv[i]);
}
/*
* Put file and directory names last.
*/
for (i=1; i<argc; i++)
if (argv[i][0] != '-')
{
strcat (buff, " ");
strcat (buff, argv[i]);
}
/*
* Build a proper descriptor for lib$spawn.
*/
len = strlen (buff);
buff [len] = '\0';
cmd.adr = buff;
cmd.len = len;
cmd.mbz = 0;
i = lib$spawn (&cmd);
/*
* Die with a traceback if something went wrong.
*/
if ((i & 1) != 1)
lib$stop ();
exit (0);
}
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