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/* See LICENSE file for details. */
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
void
eprint(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
int
main(int argc, char **argv) {
int status, format;
unsigned char *data = NULL;
unsigned long n, extra;
Display *dpy;
Window root;
Atom netwmcheck, netwmname, utf8_string, real;
if(argc > 2)
eprint("usage: wmname [name] [-v]\n");
else if(argc == 2 && !strncmp(argv[1], "-v", 3))
eprint("wmname-"VERSION", © 2008-2013 Anselm R Garbe\n", stdout);
if(!(dpy = XOpenDisplay(0)))
eprint("wmname: cannot open display\n");
root = DefaultRootWindow(dpy);
netwmcheck = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
netwmname = XInternAtom(dpy, "_NET_WM_NAME", False);
utf8_string = XInternAtom(dpy, "UTF8_STRING", False);
if(argc == 1) {
status = XGetWindowProperty(dpy, root, netwmname, 0L, 32L, False, utf8_string, &real, &format, &n, &extra, (unsigned char **) &data);
if(status == Success && data != NULL)
fprintf(stdout, "%s\n", data);
XFree(data);
}
else {
XChangeProperty(dpy, root, netwmcheck, XA_WINDOW, 32, PropModeReplace, (unsigned char *)&root, 1);
XChangeProperty(dpy, root, netwmname, utf8_string, 8, PropModeReplace, (unsigned char *)argv[1], strlen(argv[1]));
}
XSync(dpy, False);
XCloseDisplay(dpy);
return 0;
}
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