7 #define LENGTH(X) (sizeof(X) / sizeof (X[0]))
13 unsigned int interval;
16 void dummysighandler(int num);
17 void sighandler(int num);
18 void replace(char *str, char old, char new);
19 void getcmds(int time);
21 void getsigcmds(int signal);
23 void sighandler(int signum);
25 int getstatus(char *str, char *last);
28 void termhandler(int signum);
36 static char statusbar[LENGTH(blocks)][CMDLENGTH] = {0};
37 static char statusstr[2][256];
38 static int statusContinue = 1;
39 static void (*writestatus) () = setroot;
41 void replace(char *str, char old, char new)
44 for(int i = 0; i < N; i++)
49 //opens process *cmd and stores output in *output
50 void getcmd(const Block *block, char *output)
52 strcpy(output, block->icon);
53 char *cmd = block->command;
54 FILE *cmdf = popen(cmd,"r");
58 int i = strlen(block->icon);
59 fgets(output+i, CMDLENGTH-i, cmdf);
61 if (delim != '\0' && --i)
67 void getcmds(int time)
70 for(int i = 0; i < LENGTH(blocks); i++)
73 if ((current->interval != 0 && time % current->interval == 0) || time == -1)
74 getcmd(current,statusbar[i]);
79 void getsigcmds(int signal)
82 for (int i = 0; i < LENGTH(blocks); i++)
85 if (current->signal == signal)
86 getcmd(current,statusbar[i]);
92 /* initialize all real time signals with dummy handler */
93 for(int i = SIGRTMIN; i <= SIGRTMAX; i++)
94 signal(i, dummysighandler);
96 for(int i = 0; i < LENGTH(blocks); i++)
98 if (blocks[i].signal > 0)
99 signal(SIGRTMIN+blocks[i].signal, sighandler);
105 int getstatus(char *str, char *last)
109 for(int i = 0; i < LENGTH(blocks); i++)
110 strcat(str, statusbar[i]);
111 str[strlen(str)-1] = '\0';
112 return strcmp(str, last);//0 if they are the same
117 if (!getstatus(statusstr[0], statusstr[1]))//Only set root if text has changed.
119 Display *d = XOpenDisplay(NULL);
123 screen = DefaultScreen(dpy);
124 root = RootWindow(dpy, screen);
125 XStoreName(dpy, root, statusstr[0]);
131 if (!getstatus(statusstr[0], statusstr[1]))//Only write out if text has changed.
133 printf("%s\n",statusstr[0]);
145 while(statusContinue)
155 /* this signal handler should do nothing */
156 void dummysighandler(int signum)
163 void sighandler(int signum)
165 getsigcmds(signum-SIGRTMIN);
170 void termhandler(int signum)
176 int main(int argc, char** argv)
178 for(int i = 0; i < argc; i++)
180 if (!strcmp("-d",argv[i]))
181 delim = argv[++i][0];
182 else if(!strcmp("-p",argv[i]))
183 writestatus = pstdout;
185 signal(SIGTERM, termhandler);
186 signal(SIGINT, termhandler);