jcs.org
fork of PCE focusing on macplus, supporting DaynaPort SCSI network emulation
1/*****************************************************************************
2 * pce *
3 *****************************************************************************/
4
5/*****************************************************************************
6 * File name: pcetime.c *
7 * Created: 2018-12-23 by Hampa Hug <hampa@hampa.ch> *
8 * Copyright: (C) 2018 Hampa Hug <hampa@hampa.ch> *
9 *****************************************************************************/
10
11/*****************************************************************************
12 * This program is free software. You can redistribute it and / or modify it *
13 * under the terms of the GNU General Public License version 2 as published *
14 * by the Free Software Foundation. *
15 * *
16 * This program is distributed in the hope that it will be useful, but *
17 * WITHOUT ANY WARRANTY, without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General *
19 * Public License for more details. *
20 *****************************************************************************/
21
22
23#include <stdio.h>
24#include <time.h>
25#include <sys/time.h>
26
27#include "config.h"
28#include "pce.h"
29
30
31const char *arg0 = NULL;
32
33static char par_print = 0;
34static char par_set = 0;
35
36
37static
38void print_help (void)
39{
40 fputs (
41 "pcetime: get the time from the host\n"
42 "\n"
43 "usage: pcetime [options]\n"
44 " -h Print help\n"
45 " -p Print the current host time\n"
46 " -s Set the system time to the current host time\n"
47 " -V Print version\n",
48 stdout
49 );
50}
51
52static
53void print_version (void)
54{
55 fputs ("pcetime version " PCEUTILS_VERSION_STR "\n", stdout);
56 fflush (stdout);
57}
58
59int main (int argc, char **argv)
60{
61 int i;
62 const char *s;
63 time_t val;
64
65 arg0 = argv[0];
66
67 if (pce_check()) {
68 fprintf (stderr, "%s: not running under pce\n", arg0);
69 return (1);
70 }
71
72 i = 1;
73 while (i < argc) {
74 if (argv[i][0] == '-') {
75 s = argv[i] + 1;
76 while (*s != 0) {
77 if (*s == 'h') {
78 print_help();
79 return (0);
80 }
81 else if (*s == 'p') {
82 par_print = 1;
83 }
84 else if (*s == 's') {
85 par_set = 1;
86 }
87 else if (*s == 'V') {
88 print_version();
89 return (0);
90 }
91 else {
92 fprintf (stderr,
93 "%s: unknown option (%s)\n",
94 arg0, argv[i]
95 );
96
97 return (1);
98 }
99
100 s += 1;
101 }
102 }
103 else {
104 fprintf (stderr, "%s: unknown option (%s)\n",
105 arg0, argv[i]
106 );
107
108 return (1);
109 }
110
111 i += 1;
112 }
113
114 if ((par_print == 0) && (par_set == 0)) {
115 print_help();
116 return (0);
117 }
118
119 val = (time_t) pce_get_time_unix();
120
121 if (par_print) {
122 struct tm *tm;
123
124 tm = gmtime (&val);
125
126 printf ("%04d-%02d-%02d %02d:%02d:%02d UTC\n",
127 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
128 tm->tm_hour, tm->tm_min, tm->tm_sec
129 );
130 }
131
132 if (par_set) {
133 struct timeval tv;
134
135 tv.tv_sec = val;
136 tv.tv_usec = 0;
137
138 if (settimeofday (&tv, NULL)) {
139 fprintf (stderr, "%s: error setting time\n", arg0);
140 return (1);
141 }
142 }
143
144 return (0);
145}