Initial revision

1 files changed, 132 insertions, 0 deletions

diff --git a/input-events.c b/input-events.c
new file mode 100644
index 0000000..c525757
--- /dev/null
+++ b/input-events.c
@@ -0,0 +1,132 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/select.h>
+
+#include "input.h"
+
+/* ------------------------------------------------------------------ */
+
+static void show_events(int nr, int timeout, int grab)
+{
+	struct input_event event;
+	struct timeval tv;
+	int fd, quit;
+	fd_set set;
+
+	fd = device_open(nr,1);
+	if (-1 == fd)
+		return;
+	device_info(fd);
+
+	if (grab) {
+		if (-1 == ioctl(fd,EVIOCGRAB,1)) {
+			perror("ioctl EVIOCGRAB(1)");
+			close(fd);
+			return;
+		}
+		fprintf(stderr,"grabbed input device\n");
+	}
+	
+	fprintf(stderr,"waiting for events\n");
+	quit = 0;
+	for (;;) {
+		/* wait for input */
+		FD_ZERO(&set);
+		FD_SET(fd,&set);
+		tv.tv_sec  = timeout;
+		tv.tv_usec = 0;
+		switch (select(fd+1,&set,NULL,NULL,&tv)) {
+		case -1:
+			perror("select");
+			quit = 1;
+			break;
+		case 0:
+			fprintf(stderr,"timeout, quitting\n");
+			quit = 1;
+			break;
+		}
+		if (quit)
+			break;
+
+		/* read input */
+		if (FD_ISSET(fd,&set)) {
+			switch (read(fd,&event,sizeof(event))) {
+			case -1:
+				perror("read");
+				quit = 1;
+				break;
+			case 0:
+				fprintf(stderr,"EOF\n");
+				quit = 1;
+				break;
+			default:
+				print_event(&event);
+				break;
+			}
+		}
+		if (quit)
+			break;
+	}
+
+	if (grab) {
+		if (-1 == ioctl(fd,EVIOCGRAB,0)) {
+			perror("ioctl EVIOCGRAB(0)");
+			close(fd);
+			return;
+		}
+		fprintf(stderr,"released input device\n");
+	}
+	close(fd);
+}
+
+static int usage(char *prog, int error)
+{
+	fprintf(error ? stderr : stdout,
+		"usage: %s"
+		" [ -g ] [ -t <sec> ]"
+		" devnr\n",
+		prog);
+	exit(error);
+}
+
+int main(int argc, char *argv[])
+{
+	int timeout  = 10;
+	int grab     =  0;
+	int c,devnr;
+
+	for (;;) {
+		if (-1 == (c = getopt(argc, argv, "hgt:")))
+			break;
+		switch (c) {
+		case 't':
+			timeout = atoi(optarg);
+			break;
+		case 'g':
+			grab = 1;
+			break;
+		case 'h':
+			usage(argv[0],0);
+		default:
+			usage(argv[0],1);
+		}
+	}
+
+	if (optind == argc)
+		usage(argv[0],1);
+
+	devnr = atoi(argv[optind]);
+	show_events(devnr,timeout,grab);
+	return 0;
+}
+
+/* ---------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */