1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* Show files' passive translators.
Copyright (C) 1995, 1996, 1997, 1998 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 <argp.h>
#include <fcntl.h>
#include <unistd.h>
#include <version.h>
#include <error.h>
#include <argz.h>
const char *argp_program_version = STANDARD_HURD_VERSION (showtrans);
static struct argp_option options[] =
{
{"prefix", 'p', 0, 0, "Always display `FILENAME: ' before translators"},
{"no-prefix", 'P', 0, 0, "Never display `FILENAME: ' before translators"},
{"silent", 's', 0, 0, "No output; useful when checking error status"},
{"quiet", 'q', 0, OPTION_ALIAS | OPTION_HIDDEN},
{"translated",'t', 0, 0, "Only display files that have translators"},
{0, 0}
};
static char *args_doc = "FILE...";
static char *doc = "Show the passive translator of FILE..."
"\vA FILE argument of `-' prints the translator on the node"
" attached to standard input.";
/* ---------------------------------------------------------------- */
int
main (int argc, char *argv[])
{
/* The default exit status -- changed to 0 if we find any translators. */
int status = 1;
/* Some option flags. -1 for PRINT_PREFIX means use the default. */
int print_prefix = -1, silent = 0, show_untrans = 1;
/* If NODE is MACH_PORT_NULL, prints an error message and exits, otherwise
prints the translator on NODE, possibly prefixed by `NAME:', and
deallocates NODE. */
void print_node_trans (file_t node, char *name)
{
if (node == MACH_PORT_NULL)
error (0, errno, "%s", 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", 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 && show_untrans)
puts (name);
break;
default:
error (0, err, "%s", name);
}
mach_port_deallocate (mach_task_self (), node);
}
}
/* Parse a command line option. */
error_t parse_opt (int key, char *arg, struct argp_state *state)
{
switch (key)
{
case ARGP_KEY_ARG: /* A FILE argument */
if (print_prefix < 0)
/* By default, only print a prefix if there are multiple files. */
print_prefix = state->next < state->argc;
if (strcmp (arg, "-") != 0)
print_node_trans (file_name_lookup (arg, O_NOTRANS, 0), arg);
else
print_node_trans (getdport (0), "-");
break;
/* Options. */
case 'p': print_prefix = 1; break;
case 'P': print_prefix = 0; break;
case 's': case 'q': silent = 1; break;
case 't': show_untrans = 0; break;
case ARGP_KEY_NO_ARGS:
argp_usage (state); /* exits */
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
struct argp argp = {options, parse_opt, args_doc, doc};
argp_parse (&argp, argc, argv, 0, 0, 0);
return status;
}
|
