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
|
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
#include<unistd.h>
#include<signal.h>
#include<X11/Xlib.h>
#define LENGTH(X) (sizeof(X) / sizeof (X[0]))
#define CMDLENGTH 50
typedef struct {
char* icon;
char* command;
unsigned int interval;
unsigned int signal;
} Block;
void sighandler(int num);
void replace(char *str, char old, char new);
void getcmds(int time);
#ifndef __OpenBSD__
void getsigcmds(int signal);
void setupsignals();
void sighandler(int signum);
#endif
int getstatus(char *str, char *last);
void setroot();
void statusloop();
void termhandler(int signum);
#include "blocks.h"
static Display *dpy;
static int screen;
static Window root;
static char statusbar[LENGTH(blocks)][CMDLENGTH] = {0};
static char statusstr[2][256];
static int statusContinue = 1;
static void (*writestatus) () = setroot;
void replace(char *str, char old, char new)
{
int N = strlen(str);
for(int i = 0; i < N; i++)
if(str[i] == old)
str[i] = new;
}
//opens process *cmd and stores output in *output
void getcmd(const Block *block, char *output)
{
strcpy(output, block->icon);
char *cmd = block->command;
FILE *cmdf = popen(cmd,"r");
if (!cmdf)
return;
char c;
int i = strlen(block->icon);
fgets(output+i, CMDLENGTH-i, cmdf);
i = strlen(output);
if (delim != '\0' && --i)
output[i++] = delim;
output[i++] = '\0';
pclose(cmdf);
}
void getcmds(int time)
{
const Block* current;
for(int i = 0; i < LENGTH(blocks); i++)
{
current = blocks + i;
if ((current->interval != 0 && time % current->interval == 0) || time == -1)
getcmd(current,statusbar[i]);
}
}
#ifndef __OpenBSD__
void getsigcmds(int signal)
{
const Block *current;
for (int i = 0; i < LENGTH(blocks); i++)
{
current = blocks + i;
if (current->signal == signal)
getcmd(current,statusbar[i]);
}
}
void setupsignals()
{
for(int i = 0; i < LENGTH(blocks); i++)
{
if (blocks[i].signal > 0)
signal(SIGRTMIN+blocks[i].signal, sighandler);
}
}
#endif
int getstatus(char *str, char *last)
{
strcpy(last, str);
str[0] = '\0';
for(int i = 0; i < LENGTH(blocks); i++)
strcat(str, statusbar[i]);
str[strlen(str)-1] = '\0';
return strcmp(str, last);//0 if they are the same
}
void setroot()
{
if (!getstatus(statusstr[0], statusstr[1]))//Only set root if text has changed.
return;
Display *d = XOpenDisplay(NULL);
if (d) {
dpy = d;
}
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
XStoreName(dpy, root, statusstr[0]);
XCloseDisplay(dpy);
}
void pstdout()
{
if (!getstatus(statusstr[0], statusstr[1]))//Only write out if text has changed.
return;
printf("%s\n",statusstr[0]);
fflush(stdout);
}
void statusloop()
{
#ifndef __OpenBSD__
setupsignals();
#endif
int i = 0;
getcmds(-1);
while(statusContinue)
{
getcmds(i);
writestatus();
sleep(1.0);
i++;
}
}
#ifndef __OpenBSD__
void sighandler(int signum)
{
getsigcmds(signum-SIGRTMIN);
writestatus();
}
#endif
void termhandler(int signum)
{
statusContinue = 0;
exit(0);
}
int main(int argc, char** argv)
{
for(int i = 0; i < argc; i++)
{
if (!strcmp("-d",argv[i]))
delim = argv[++i][0];
else if(!strcmp("-p",argv[i]))
writestatus = pstdout;
}
signal(SIGTERM, termhandler);
signal(SIGINT, termhandler);
statusloop();
}
|
