xkeylog

commit 400bf83b1f67e24e9615699c48d6a469baf0db8e
parent 9514cb8f2bb57de34c8e5a63bda8da79e92aae64
Author: Louis Burda <quent.burda@gmail.com>
Date:   Thu, 22 Jun 2023 22:44:34 +0200

Add MIT license

Diffstat:
M
xkeylog.c
 | 
46
+++++++++++++++++++++++++++++++---------------

1 file changed, 31 insertions(+), 15 deletions(-)
diff --git a/xkeylog.c b/xkeylog.c
@@ -9,20 +9,38 @@
 #include <X11/extensions/XKB.h>
 #include <sys/types.h>
 #include <signal.h>
-#include <err.h>
 #include <ctype.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdbool.h>
+#include <stdarg.h>
 #include <stdlib.h>
 
-const int mask = KeyPressMask | KeyReleaseMask | FocusChangeMask;
+static int keysym_group;
+static int xinput_op;
+static int xkb_event;
 
-int keysym_group;
-int xinput_op;
-int xkb_event;
+static void
+__attribute__((format(printf,1,2)))
+die(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	fputs("xkeylog: ", stderr);
+	vfprintf(stderr, fmt, ap);
+	if (*fmt && fmt[strlen(fmt)-1] == ':') {
+		fputc(' ', stderr);
+		perror(NULL);
+	} else {
+		fputc('\n', stderr);
+	}
+	va_end(ap);
 
-void
+	exit(1);
+}
+
+static void
 check_support(Display *dpy, int *xinput_op)
 {
 	int op, ev, err;
@@ -30,19 +48,19 @@ check_support(Display *dpy, int *xinput_op)
 	int ret;
 
 	ret = XQueryExtension(dpy, "XInputExtension", xinput_op, &ev, &err);
-	if (!ret) errx(1, "missing XInput extension");
+	if (!ret) die("missing XInput extension");
 
 	vmajor = 2;
 	vminor = 0;
 	ret = XIQueryVersion(dpy, &vmajor, &vminor);
 	if (ret == BadRequest)
-		errx(1, "missing XInput2 support");
+		die("missing XInput2 support");
 
 	ret = XkbQueryExtension(dpy, &op, &ev, &err, &vmajor, &vminor);
-	if (!ret) errx(1, "missing Xkb extension");
+	if (!ret) die("missing Xkb extension");
 }
 
-void
+static void
 setup_xinput(Display *dpy, Window root)
 {
 	XIEventMask mask;
@@ -50,7 +68,7 @@ setup_xinput(Display *dpy, Window root)
 	mask.deviceid = XIAllMasterDevices;
 	mask.mask_len = XIMaskLen(XI_LASTEVENT);
 	mask.mask = calloc(mask.mask_len, 1);
-	if (!mask.mask) err(1, "calloc");
+	if (!mask.mask) die("calloc:");
 
 	XISetMask(mask.mask, XI_RawKeyPress);
 	XISetMask(mask.mask, XI_RawKeyRelease);
@@ -60,7 +78,7 @@ setup_xinput(Display *dpy, Window root)
 	free(mask.mask);
 }
 
-void
+static void
 handle_event(Display *dpy, Window root)
 {
 	XGenericEventCookie *cookie;
@@ -127,7 +145,5 @@ main(int argc, const char **argv)
 	XkbGetState(dpy, XkbUseCoreKbd, &state);
 	keysym_group = state.group;
 
-	while (1) {
-		handle_event(dpy, root);
-	}
+	while (1) handle_event(dpy, root);
 }