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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/* tee - read from standard input and write to standard output and files.
Copyright (C) 85, 90, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Mike Parker, Richard M. Stallman, and David MacKenzie */
#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <signal.h>
#include <getopt.h>
#include "system.h"
#include "error.h"
char *xmalloc ();
int full_write ();
static int tee __P ((int nfiles, const char **files));
/* If nonzero, append to output files rather than truncating them. */
static int append;
/* If nonzero, ignore interrupts. */
static int ignore_interrupts;
/* The name that this program was run with. */
char *program_name;
/* If nonzero, display usage information and exit. */
static int show_help;
/* If nonzero, print the version on standard output and exit. */
static int show_version;
static struct option const long_options[] =
{
{"append", no_argument, NULL, 'a'},
{"help", no_argument, &show_help, 1},
{"ignore-interrupts", no_argument, NULL, 'i'},
{"version", no_argument, &show_version, 1},
{NULL, 0, NULL, 0}
};
static void
usage (int status)
{
if (status != 0)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("Usage: %s [OPTION]... [FILE]...\n"), program_name);
printf (_("\
Copy standard input to each FILE, and also to standard output.\n\
\n\
-a, --append append to the given FILEs, do not overwrite\n\
-i, --ignore-interrupts ignore interrupt signals\n\
--help display this help and exit\n\
--version output version information and exit\n\
"));
puts (_("\nReport bugs to bug-gnu-utils@gnu.ai.mit.edu"));
}
exit (status);
}
int
main (int argc, char **argv)
{
int errs;
int optc;
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
append = 0;
ignore_interrupts = 0;
while ((optc = getopt_long (argc, argv, "ai", long_options, (int *) 0))
!= EOF)
{
switch (optc)
{
case 0:
break;
case 'a':
append = 1;
break;
case 'i':
ignore_interrupts = 1;
break;
default:
usage (1);
}
}
if (show_version)
{
printf ("tee - %s\n", PACKAGE_VERSION);
exit (0);
}
if (show_help)
usage (0);
if (ignore_interrupts)
{
#ifdef _POSIX_SOURCE
struct sigaction sigact;
sigact.sa_handler = SIG_IGN;
sigemptyset (&sigact.sa_mask);
sigact.sa_flags = 0;
sigaction (SIGINT, &sigact, NULL);
#else /* !_POSIX_SOURCE */
signal (SIGINT, SIG_IGN);
#endif /* _POSIX_SOURCE */
}
errs = tee (argc - optind, (const char **) &argv[optind]);
if (close (0) != 0)
error (1, errno, _("standard input"));
if (close (1) != 0)
error (1, errno, _("standard output"));
exit (errs);
}
/* Copy the standard input into each of the NFILES files in FILES
and into the standard output.
Return 0 if successful, 1 if any errors occur. */
static int
tee (int nfiles, const char **files)
{
int *descriptors;
char buffer[BUFSIZ];
register int bytes_read, i, ret = 0, mode;
descriptors = (int *) xmalloc ((nfiles + 1) * sizeof (int));
mode = O_WRONLY | O_CREAT;
if (append)
mode |= O_APPEND;
else
mode |= O_TRUNC;
/* Move all the names `up' one in the argv array to make room for
the entry for standard output. This writes into argv[argc]. */
for (i = nfiles; i >= 1; i--)
files[i] = files[i - 1];
/* In the array of NFILES + 1 descriptors, make
the first one correspond to standard output. */
descriptors[0] = 1;
files[0] = _("standard output");
for (i = 1; i <= nfiles; i++)
{
descriptors[i] = open (files[i], mode, 0666);
if (descriptors[i] == -1)
{
error (0, errno, "%s", files[i]);
ret = 1;
}
}
while (1)
{
bytes_read = read (0, buffer, sizeof buffer);
#ifdef EINTR
if (bytes_read < 0 && errno == EINTR)
continue;
#endif
if (bytes_read <= 0)
break;
/* Write to all NFILES + 1 descriptors.
Standard output is the first one. */
for (i = 0; i <= nfiles; i++)
{
if (descriptors[i] != -1
&& full_write (descriptors[i], buffer, bytes_read) < 0)
{
error (0, errno, "%s", files[i]);
/* Don't close stdout. That's done in main. */
if (descriptors[i] != 1)
close (descriptors[i]);
descriptors[i] = -1;
ret = 1;
}
}
}
if (bytes_read == -1)
{
error (0, errno, _("read error"));
ret = 1;
}
/* Close the files, but not standard output. */
for (i = 1; i <= nfiles; i++)
if (descriptors[i] != -1 && close (descriptors[i]) != 0)
{
error (0, errno, "%s", files[i]);
ret = 1;
}
free (descriptors);
return ret;
}
|
