mucat.c
2.16 KB
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
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2002, 2005, 2007, 2010-2012, 2014-2017 Free
Software Foundation, Inc.
GNU Mailutils 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 3, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <mailutils/mailutils.h>
int
main (int argc, char * argv [])
{
int c;
mu_stream_t in, out;
int reread_option = 0;
mu_off_t reread_off;
int skip_option = 0;
mu_off_t skip_off;
while ((c = getopt (argc, argv, "hs:r:")) != EOF)
switch (c)
{
case 'r':
reread_option = 1;
reread_off = strtoul (optarg, NULL, 10);
break;
case 's':
skip_option = 1;
skip_off = strtoul (optarg, NULL, 10);
break;
case 'h':
printf ("usage: cat [-s off]\n");
exit (0);
default:
exit (1);
}
MU_ASSERT (mu_stdio_stream_create (&in, MU_STDIN_FD, MU_STREAM_SEEK));
MU_ASSERT (mu_stdio_stream_create (&out, MU_STDOUT_FD, 0));
if (skip_option)
{
mu_stream_printf (out, "skipping to %lu:\n",
(unsigned long) skip_off);
MU_ASSERT (mu_stream_seek (in, skip_off, MU_SEEK_SET, NULL));
}
MU_ASSERT (mu_stream_copy (out, in, 0, NULL));
if (reread_option)
{
mu_stream_printf (out, "rereading from %lu:\n",
(unsigned long) reread_off);
MU_ASSERT (mu_stream_seek (in, reread_off, MU_SEEK_SET, NULL));
MU_ASSERT (mu_stream_copy (out, in, 0, NULL));
}
mu_stream_close (in);
mu_stream_destroy (&in);
mu_stream_close (out);
mu_stream_destroy (&out);
return 0;
}