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
|
#define _GNU_SOURCE
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
int stop = 0;
#ifdef BATTERY
char *readfile(char *buf, size_t len, const char *fn) {
FILE *f;
size_t n;
f = fopen(fn, "r");
if (!f) {
return NULL;
}
n = fread(buf, 1, len-1, f);
if (ferror(f)) {
return NULL;
}
fclose(f);
if (n >= len-1 || n < 1) {
return NULL;
}
buf[n] = '\0';
return buf;
}
int getnum(const char *fn) {
char buf[1024];
if (readfile(buf, sizeof(buf), fn)) {
return atoi(buf);
}
return -1;
}
#ifdef CHARGING
int charging(void) {
char buf[1024];
if (readfile(buf, sizeof(buf), STATUS)) {
return !strcmp(buf, CHARGING);
}
return 0;
}
#endif /* CHARGING */
#endif /* BATTERY */
void handler(int sig)
{
stop = sig;
}
int main(void)
{
#ifdef EXACT_SLEEP
struct timespec ts;
#endif /* EXACT_SLEEP */
struct tm *tm;
time_t now;
#ifdef BATTERY
long long curr, max, a=-1, b=-1, i;
char name[8 + 9]; /* (p)pp.pp% hh:mm:ss\0 */
char *perc = name;
char *clock = name + 8;
char sign = '%';
#else
char name[9]; /* hh:mm:ss\0 */
char *clock = name;
#endif /* BATTERY */
struct sigaction act;
Display *disp;
int screen;
Window root;
act.sa_handler = handler;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
sigaction(SIGHUP, &act, NULL);
sigaction(SIGINT, &act, NULL);
sigaction(SIGQUIT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
disp = XOpenDisplay(NULL);
#ifdef BATTERY
for (i=0; !stop; ++i) {
#else
while (!stop) {
#endif /* BATTERY */
if (!disp) {
puts("Cannot open display!");
return 1;
}
screen = DefaultScreen(disp);
root = RootWindow(disp, screen);
#ifdef BATTERY
if (i % (BAT_REFRESH_SECONDS) == 0) {
curr = getnum(ENERGY_NOW) * MUL;
max = getnum(ENERGY_FULL);
#ifdef CHARGING
sign = charging() ? '+' : '%';
#endif /* CHARGING */
if (curr < 0 || max < 1) {
a = b = -1;
} else {
a = curr * 10000 / max;
b = a % 100;
a /= 100;
}
}
if (a < 0 || b < 0) {
snprintf(perc, 8, "NO BAT ");
} else if (a < 0 || a > 999999 || b < 0 || b > 99) {
snprintf(perc, 8, "INVALID");
} else if (a > 999) {
snprintf(perc, 8, "%6lld%c", a, sign);
} else {
snprintf(perc, 8, "%3lld.%02lld%c", a, b, sign);
}
perc[7] = ' ';
#endif /* BATTERY */
#ifdef EXACT_SLEEP
clock_gettime(CLOCK_REALTIME, &ts);
now = ts.tv_sec;
#else
now = time(NULL);
#endif /* EXACT_SLEEP */
tm = localtime(&now);
strftime(clock, 9, "%H:%M:%S", tm);
XStoreName(disp, root, name);
XFlush(disp);
#ifdef EXACT_SLEEP
ts.tv_sec = 0;
ts.tv_nsec = 1000000000 - ts.tv_nsec;
nanosleep(&ts, NULL);
#else
sleep(1);
#endif /* EXACT_SLEEP */
}
XCloseDisplay(disp);
return 0;
}
|