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/* Set a passive translator on a file
Copyright (C) 1994 Free Software Foundation, Inc.
Written by Michael I. Bushnell.
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at
your option) any later version.
The GNU Hurd 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <hurd.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
int
main (int argc, char **argv)
{
/* This is pretty kludgy for now. */
mach_port_t file;
char *buf, *bp;
int buflen;
int i;
if (argc < 2)
{
fprintf (stderr, "\
Usage: %s FILE TRANSLATOR [ARG ...]\n\
or: %s FILE -show\n", argv[0], argv[0]);
exit (1);
}
/* Use the O_NOTRANS flag so that we replace any existing
translator rather than piggybacking on top of it. */
file = file_name_lookup (argv[1], O_NOTRANS, 0);
if (file == MACH_PORT_NULL)
{
perror (argv[1]);
exit (1);
}
if (argc == 3 && !strcmp (argv[2], "-show"))
{
char buf[1024], *trans = buf;
unsigned int len = sizeof buf;
errno = file_get_translator (file, &trans, &len);
if (errno)
{
perror ("file_get_translator");
exit (1);
}
printf ("%s translated by:", argv[1]);
do
{
char *next;
printf (" %.*s", (int) len, trans);
next = memchr (trans, '\0', len);
if (! next)
{
printf ("<unterminated>");
break;
}
len -= ++next - trans;
trans = next;
} while (len > 0);
putchar ('\n');
exit (0);
}
buflen = 0;
for (i = 2; i < argc; i++)
buflen += strlen (argv[i]) + 1;
bp = buf = alloca (buflen);
for (i = 2; i < argc; i++)
bp = stpcpy (bp, argv[i]) + 1;
errno = file_set_translator (file, FS_TRANS_SET, 0, 0,
buf, buflen, MACH_PORT_NULL,
MACH_MSG_TYPE_COPY_SEND);
if (errno != 0)
{
perror ("Setting translator");
exit (1);
}
exit (0);
}
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