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
|
/*
* Mini tee implementation for busybox
*
*
* Copyright (C) 1999 by Lineo, inc.
* Written by John Beppu <beppu@line.com>
*
* 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 of the License, 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
*
*/
#include <stdio.h>
#include <stdlib.h>
/* FileList _______________________________________________________________ */
#define FL_MAX 1024
static FILE *FileList[FL_MAX];
static int FL_end;
typedef void (FL_Function)(FILE *file, char c);
/* initialize FileList */
static void
FL_init()
{
FL_end = 0;
FileList[0] = stdout;
}
/* add a file to FileList */
static int
FL_add(const char *filename, char *opt_open)
{
FILE *file;
file = fopen(filename, opt_open);
if (!file) { return 0; };
if (FL_end < FL_MAX) {
FileList[++FL_end] = file;
}
return 1;
}
/* apply a function to everything in FileList */
static void
FL_apply(FL_Function *f, char c)
{
int i;
for (i = 0; i <= FL_end; i++) {
f(FileList[i], c);
}
}
/* ________________________________________________________________________ */
/* FL_Function for writing to files*/
static void
tee_fwrite(FILE *file, char c)
{
fputc(c, file);
}
/* FL_Function for closing files */
static void
tee_fclose(FILE *file, char c)
{
fclose(file);
}
/* help message */
static void
tee_usage()
{
fprintf (
stdout,
"%s\n%s\n%s\n%s\n%s\n",
"Usage: tee [OPTION]... [FILE]...",
"Copy standard input to each FILE, and also to standard output.\n",
" -a, append to the given FILEs, do not overwrite",
" -i, ignore interrupt signals",
" -h, this help message"
);
exit(1);
}
/* BusyBoxed tee(1) */
int
tee_main(int argc, char **argv)
{
int i;
char c;
char opt;
char opt_fopen[2] = "w";
/* parse argv[] */
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
opt = argv[i][1];
switch (opt) {
case 'a':
opt_fopen[0] = 'a';
break;
case 'i':
fprintf(stderr, "ingore interrupt not implemented\n");
break;
case 'h':
tee_usage();
break;
default:
fprintf(stderr, "tee: invalid option -- %c\n", opt);
tee_usage();
}
} else {
break;
}
}
/* init FILE pointers */
FL_init();
for ( ; i < argc; i++) {
FL_add(argv[i], opt_fopen);
}
/* read and redirect */
while ((c = (char) getchar()) && (!feof(stdin))) {
FL_apply(tee_fwrite, c);
}
/* clean up */
FL_apply(tee_fclose, 0);
exit(0);
}
/* $Id: tee.c,v 1.1 1999/12/10 05:27:16 beppu Exp $ */
|
