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-rw-r--r--dwmblocks/dwmblocks.c296
1 files changed, 0 insertions, 296 deletions
diff --git a/dwmblocks/dwmblocks.c b/dwmblocks/dwmblocks.c
deleted file mode 100644
index 1bd87f0..0000000
--- a/dwmblocks/dwmblocks.c
+++ /dev/null
@@ -1,296 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <time.h>
-#include <signal.h>
-#include <errno.h>
-#include <X11/Xlib.h>
-#include <sys/signalfd.h>
-#include <poll.h>
-#define LENGTH(X) (sizeof(X) / sizeof (X[0]))
-#define CMDLENGTH 100
-
-typedef struct {
- char* icon;
- char* command;
- unsigned int interval;
- unsigned int signal;
-} Block;
-void sighandler();
-void buttonhandler(int ssi_int);
-void replace(char *str, char old, char new);
-void remove_all(char *str, char to_remove);
-void getcmds(int time);
-void getsigcmds(int signal);
-void setupsignals();
-int getstatus(char *str, char *last);
-void setroot();
-void statusloop();
-void termhandler(int signum);
-
-
-#include "config.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 int signalFD;
-static int timerInterval = -1;
-static void (*writestatus) () = setroot;
-
-void replace(char *str, char old, char new)
-{
- for(char * c = str; *c; c++)
- if(*c == old)
- *c = new;
-}
-
-// the previous function looked nice but unfortunately it didnt work if to_remove was in any position other than the last character
-// theres probably still a better way of doing this
-void remove_all(char *str, char to_remove) {
- char *read = str;
- char *write = str;
- while (*read) {
- if (*read != to_remove) {
- *write++ = *read;
- }
- ++read;
- }
- *write = '\0';
-}
-
-int gcd(int a, int b)
-{
- int temp;
- while (b > 0){
- temp = a % b;
-
- a = b;
- b = temp;
- }
- return a;
-}
-
-
-//opens process *cmd and stores output in *output
-void getcmd(const Block *block, char *output)
-{
- if (block->signal)
- {
- output[0] = block->signal;
- output++;
- }
- char *cmd = block->command;
- FILE *cmdf = popen(cmd,"r");
- if (!cmdf){
- //printf("failed to run: %s, %d\n", block->command, errno);
- return;
- }
- char tmpstr[CMDLENGTH] = "";
- // TODO decide whether its better to use the last value till next time or just keep trying while the error was the interrupt
- // this keeps trying to read if it got nothing and the error was an interrupt
- // could also just read to a separate buffer and not move the data over if interrupted
- // this way will take longer trying to complete 1 thing but will get it done
- // the other way will move on to keep going with everything and the part that failed to read will be wrong till its updated again
- // either way you have to save the data to a temp buffer because when it fails it writes nothing and then then it gets displayed before this finishes
- char * s;
- int e;
- do {
- errno = 0;
- s = fgets(tmpstr, CMDLENGTH-(strlen(delim)+1), cmdf);
- e = errno;
- } while (!s && e == EINTR);
- pclose(cmdf);
- int i = strlen(block->icon);
- strcpy(output, block->icon);
- strcpy(output+i, tmpstr);
- remove_all(output, '\n');
- i = strlen(output);
- if ((i > 0 && block != &blocks[LENGTH(blocks) - 1])){
- strcat(output, delim);
- }
- i+=strlen(delim);
- output[i++] = '\0';
-}
-
-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]);
- }
- }
-}
-
-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()
-{
- sigset_t signals;
- sigemptyset(&signals);
- sigaddset(&signals, SIGALRM); // Timer events
- sigaddset(&signals, SIGUSR1); // Button events
- // All signals assigned to blocks
- for (size_t i = 0; i < LENGTH(blocks); i++)
- if (blocks[i].signal > 0)
- sigaddset(&signals, SIGRTMIN + blocks[i].signal);
- // Create signal file descriptor for pooling
- signalFD = signalfd(-1, &signals, 0);
- // Block all real-time signals
- for (int i = SIGRTMIN; i <= SIGRTMAX; i++) sigaddset(&signals, i);
- sigprocmask(SIG_BLOCK, &signals, NULL);
- // Do not transform children into zombies
- struct sigaction sigchld_action = {
- .sa_handler = SIG_DFL,
- .sa_flags = SA_NOCLDWAIT
- };
- sigaction(SIGCHLD, &sigchld_action, NULL);
-
-}
-
-int getstatus(char *str, char *last)
-{
- strcpy(last, str);
- str[0] = '\0';
- for(int i = 0; i < LENGTH(blocks); i++) {
- strcat(str, statusbar[i]);
- if (i == LENGTH(blocks) - 1)
- strcat(str, " ");
- }
- 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()
-{
- setupsignals();
- // first figure out the default wait interval by finding the
- // greatest common denominator of the intervals
- for(int i = 0; i < LENGTH(blocks); i++){
- if(blocks[i].interval){
- timerInterval = gcd(blocks[i].interval, timerInterval);
- }
- }
- getcmds(-1); // Fist time run all commands
- raise(SIGALRM); // Schedule first timer event
- int ret;
- struct pollfd pfd[] = {{.fd = signalFD, .events = POLLIN}};
- while (statusContinue) {
- // Wait for new signal
- ret = poll(pfd, sizeof(pfd) / sizeof(pfd[0]), -1);
- if (ret < 0 || !(pfd[0].revents & POLLIN)) break;
- sighandler(); // Handle signal
- }
-}
-
-void sighandler()
-{
- static int time = 0;
- struct signalfd_siginfo si;
- int ret = read(signalFD, &si, sizeof(si));
- if (ret < 0) return;
- int signal = si.ssi_signo;
- switch (signal) {
- case SIGALRM:
- // Execute blocks and schedule the next timer event
- getcmds(time);
- alarm(timerInterval);
- time += timerInterval;
- break;
- case SIGUSR1:
- // Handle buttons
- buttonhandler(si.ssi_int);
- return;
- default:
- // Execute the block that has the given signal
- getsigcmds(signal - SIGRTMIN);
- break;
- }
- writestatus();
-}
-
-void buttonhandler(int ssi_int)
-{
- char button[2] = {('0' + ssi_int) & 0xff, '\0'};
- pid_t process_id = getpid();
- int sig = ssi_int >> 8;
- if (fork() == 0)
- {
- const Block *current;
- for (int i = 0; i < LENGTH(blocks); i++)
- {
- current = blocks + i;
- if (current->signal == sig)
- break;
- }
- char shcmd[1024];
- sprintf(shcmd,"%s && kill -%d %d",current->command, current->signal+34,process_id);
- char *command[] = { "/bin/sh", "-c", shcmd, NULL };
- setenv("BLOCK_BUTTON", button, 1);
- setsid();
- execvp(command[0], command);
- exit(EXIT_SUCCESS);
- }
-}
-
-
-void termhandler(int signum)
-{
- statusContinue = 0;
-}
-
-int main(int argc, char** argv)
-{
- for(int i = 0; i < argc; i++)
- {
- if (!strcmp("-d",argv[i]))
- delim = argv[++i];
- else if(!strcmp("-p",argv[i]))
- writestatus = pstdout;
- }
- signal(SIGTERM, termhandler);
- signal(SIGINT, termhandler);
- statusloop();
- close(signalFD);
-}
-
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