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
|
/* sleep - delay for a specified amount of time.
Copyright (C) 84, 1991-1997, 1999-2003 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. */
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <sys/types.h>
#include <getopt.h>
#include "system.h"
#include "closeout.h"
#include "error.h"
#include "long-options.h"
#include "xnanosleep.h"
#include "xstrtod.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "sleep"
#define AUTHORS N_ ("Jim Meyering and Paul Eggert")
/* The name by which this program was run. */
char *program_name;
static struct option const long_options[] =
{
{0, 0, 0, 0}
};
void
usage (int status)
{
if (status != 0)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("\
Usage: %s NUMBER[SUFFIX]...\n\
or: %s OPTION\n\
Pause for NUMBER seconds. SUFFIX may be `s' for seconds (the default),\n\
`m' for minutes, `h' for hours or `d' for days. Unlike most implementations\n\
that require NUMBER be an integer, here NUMBER may be an arbitrary floating\n\
point number.\n\
\n\
"),
program_name, program_name);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
exit (status);
}
/* Given a floating point value *X, and a suffix character, SUFFIX_CHAR,
scale *X by the multiplier implied by SUFFIX_CHAR. SUFFIX_CHAR may
be the NUL byte or `s' to denote seconds, `m' for minutes, `h' for
hours, or `d' for days. If SUFFIX_CHAR is invalid, don't modify *X
and return nonzero. Otherwise return zero. */
static int
apply_suffix (double *x, char suffix_char)
{
unsigned int multiplier;
switch (suffix_char)
{
case 0:
case 's':
multiplier = 1;
break;
case 'm':
multiplier = 60;
break;
case 'h':
multiplier = 60 * 60;
break;
case 'd':
multiplier = 60 * 60 * 24;
break;
default:
multiplier = 0;
}
if (multiplier == 0)
return 1;
*x *= multiplier;
return 0;
}
int
main (int argc, char **argv)
{
int i;
double seconds = 0.0;
int c;
int fail = 0;
initialize_main (&argc, &argv);
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
AUTHORS, usage);
while ((c = getopt_long (argc, argv, "", long_options, NULL)) != -1)
{
switch (c)
{
case 0:
break;
default:
usage (EXIT_FAILURE);
}
}
if (argc == 1)
{
error (0, 0, _("too few arguments"));
usage (EXIT_FAILURE);
}
for (i = optind; i < argc; i++)
{
double s;
const char *p;
if (xstrtod (argv[i], &p, &s)
/* Nonnegative interval. */
|| ! (0 <= s)
/* No extra chars after the number and an optional s,m,h,d char. */
|| (*p && *(p+1))
/* Check any suffix char and update S based on the suffix. */
|| apply_suffix (&s, *p))
{
error (0, 0, _("invalid time interval `%s'"), argv[i]);
fail = 1;
}
seconds += s;
}
if (fail)
usage (EXIT_FAILURE);
if (xnanosleep (seconds))
error (EXIT_FAILURE, errno, _("cannot read realtime clock"));
exit (EXIT_SUCCESS);
}
|
