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/* Show files' passive translators.
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <hurd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <fcntl.h>
#include <unistd.h>
#include <error.h>
#include <argz.h>
/* ---------------------------------------------------------------- */
#define USAGE "Usage: %s [OPTION...] FILE...\n"
#define SHORT_OPTIONS "hs?"
static void
usage(status)
int status;
{
if (status != 0)
fprintf(stderr, "Try `%s --help' for more information.\n",
program_invocation_name);
else
{
printf(USAGE, program_invocation_name);
printf("\
\n\
-p, --prefix always display `FILENAME: ' before translators\n\
-P, --no-prefix never display `FILENAME: ' before translators\n\
-s, --silent no output; useful when checking error status\n\
--help give this help list\n\
");
}
exit(status);
}
static struct option options[] =
{
{"prefix", no_argument, 0, 'p'},
{"no-prefix", no_argument, 0, 'P'},
{"silent", no_argument, 0, 's'},
{"quiet", no_argument, 0, 's'},
{"help", no_argument, 0, '&'},
{0, 0, 0, 0}
};
/* ---------------------------------------------------------------- */
void
main(int argc, char *argv[])
{
int opt;
/* The default exits status -- changed to 0 if we find any translators. */
int status = 1;
/* Some option flags. */
int print_prefix = -1, silent = 0;
/* Parse our options... */
while ((opt = getopt_long(argc, argv, "+" SHORT_OPTIONS, options, 0)) != EOF)
switch (opt)
{
case 'p': print_prefix = 1; break;
case 'P': print_prefix = 0; break;
case 's': silent = 1; break;
case '&': usage(0); break;
default: usage(-1); break;
}
if (print_prefix < 0)
/* By default, only print a filename prefix if there are multiple files. */
print_prefix = (argc > optind + 1);
while (optind != argc)
{
char *node_name = argv[optind++];
file_t node = file_name_lookup(node_name, O_NOTRANS, 0);
if (node == MACH_PORT_NULL)
error(0, errno, "%s", node_name);
else
{
char buf[1024], *trans = buf;
int trans_len = sizeof(buf);
error_t err = file_get_translator(node, &trans, &trans_len);
switch (err)
{
case 0:
/* Make the '\0's in TRANS printable. */
argz_stringify(trans, trans_len);
if (!silent)
if (print_prefix)
printf("%s: %s\n", node_name, trans);
else
puts(trans);
if (trans != buf)
vm_deallocate(mach_task_self(),
(vm_address_t)trans, trans_len);
status = 0;
break;
case EINVAL:
/* NODE just doesn't have a translator. */
if (!silent && print_prefix)
puts(node_name);
break;
default:
error(0, err, "%s", node_name);
}
mach_port_deallocate(mach_task_self(), node);
}
}
exit(status);
}
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