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149 lines
3.1 KiB
C
149 lines
3.1 KiB
C
/* cStatBar
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*
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* A simple statusbar to be used with DWM
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* Gathers different kinds of system info and displays it as the windows title
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*
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* Requires dwm to have the status2d patch applied and a font that supports icons e.g. Nerdfonts
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*
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* author: _N0x
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* version: 0.1
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <unistd.h>
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#include <X11/Xlib.h>
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#include "config.h"
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/* enums */
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enum { IconDateTime, IconBattery, IconCPU, IconRAM, IconDisk,
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IconNetSpeed, IconNetSpeedUp, IconNetSpeedDown, IconNetwork, IconMusic };
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/* function declaration */
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void setup();
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void setxroot(char *title);
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char *readinfile(char *filename);
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char *getnetworkspeed();
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char *cs(int count, ...);
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/* variables */
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static const char *iface;
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static const char kbs[] = "kb/s";
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/* Uses functionality from Xlib to set the window root name to a specified string */
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void setxroot(char *title)
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{
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Display * dpy = XOpenDisplay(NULL);
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int screen = DefaultScreen(dpy);
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Window root = RootWindow(dpy, screen);
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XStoreName(dpy, root, title);
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XFlush(dpy);
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XCloseDisplay(dpy);
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}
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/* Takes in a filename and returns the content of the file */
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char * readinfile(char *fileName)
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{
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FILE * fd;
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char * c;
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int len;
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fd = fopen(fileName, "r");
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if (fd==NULL)
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{
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perror("Could not read in File.\n");
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exit(EXIT_FAILURE);
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}
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fseek(fd, 0, SEEK_END);
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len = ftell(fd);
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fseek(fd, 0, SEEK_SET);
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c = malloc(len);
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fread(c, 1, len, fd);
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return c;
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}
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char * getnetworkspeed()
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{
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char *tmp,*result,*R1,*R2,*T1,*T2;
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char TT[12], RR[12];
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tmp = cs(3, "/sys/class/net/", iface, "/statistics/rx_bytes");
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R1 = readinfile(tmp);
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free(tmp);
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tmp = cs(3, "/sys/class/net/", iface, "/statistics/tx_bytes");
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T1 = readinfile(tmp);
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free(tmp);
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sleep(1);
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tmp = cs(3, "/sys/class/net/", iface, "/statistics/rx_bytes");
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R2 = readinfile(tmp);
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free(tmp);
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tmp = cs(3, "/sys/class/net/", iface, "/statistics/tx_bytes");
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T2 = readinfile(tmp);
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free(tmp);
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sprintf(RR, "%d", (atoi(R2) - atoi(R1)) / 1024);
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sprintf(TT, "%d", (atoi(T2) - atoi(T1)) / 1024);
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result = cs(11, icons[IconNetSpeed], " ",
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icons[IconNetSpeedUp], " ", TT, kbs, " ",
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icons[IconNetSpeedDown], " ", RR, kbs);
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return result;
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}
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/* a variadic function to take in count number of strings and concatenate them into one single string */
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char * cs(int count, ...)
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{
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va_list ap;
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va_start(ap, count);
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int len = 1;
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for(int i=0; i<count; i++) { len += strlen(va_arg(ap, char*)); }
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va_end(ap);
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char * result = malloc(len * sizeof(char));
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int pos = 0;
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va_start(ap, count);
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for(int i=0; i<count; i++){
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char * tmp = va_arg(ap, char *);
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strcpy(result + pos, tmp);
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pos += strlen(tmp);
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}
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return result;
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}
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void setup(){
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iface = interface;
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}
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int main(int argc, char *argv[])
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{
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setup();
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while(1) {
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//setxroot(name);
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printf("%s\n", getnetworkspeed());
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sleep(cycletime);
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}
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}
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