add help flag and improve help message

2 files changed, 8 insertions, 4 deletions

diff --git a/src/cuttime.c b/src/cuttime.c
index 4b1a494..29c8735 100644
--- a/src/cuttime.c
+++ b/src/cuttime.c
@@ -22,12 +22,13 @@ static void
 usage(void)
 {
 	fprintf(stderr,
-		"cuttime [-adfs] FILE\n"
+		"cuttime [-adfhs] FILE\n"
 		"\n"
 		"OPTIONS\n"
 		"\t-a\tcalculate average color of a frame\n"
 		"\t-d\tcalculate difference betweenprev and next frame\n"
 		"\t-f\tprint frame number\n"
+		"\t-h\tprint this help message\n"
 		"\t-s\tsave frame from detected cut\n");
 
 	exit(EXIT_FAILURE);
@@ -44,7 +45,7 @@ main(int argc, char **argv)
 	double diff = 0.0, old_diff = 0.0;
 	char filename[BUFSIZ];
 
-	while ((ch = getopt(argc, argv, "adfs")) != -1) {
+	while ((ch = getopt(argc, argv, "adfsh")) != -1) {
 		switch (ch) {
 		case 'a':
 			average_flag = 1;
@@ -58,6 +59,7 @@ main(int argc, char **argv)
 		case 's':
 			showcut_flag = 1;
 			break;
+		case 'h':
 		default:
 			usage();
 			/* NOTREACHED */
diff --git a/src/overlap.c b/src/overlap.c
index 207a306..9af4e46 100644
--- a/src/overlap.c
+++ b/src/overlap.c
@@ -10,10 +10,11 @@
 static void
 usage(void)
 {
-	fprintf(stderr, "overlap [OPTIONS] FIRST_VIDEO SECOND_VIDEO\n"
+	fprintf(stderr, "overlap [-dh] [-t DURATION] FIRST_VIDEO SECOND_VIDEO\n"
 			"\n"
 			"OPTIONS\n"
 			"\t-d\tprint diff for every frame\n"
+			"\t-h\tprint this help message\n"
 			"\t-t\tmax duration to find overlap in milliseconds\n"
 			"\t\t(default 60000 = 1 min)\n");
 
@@ -34,7 +35,7 @@ main(int argc, char **argv)
 	int64_t min_diff_time = 0;	/* dts at overlaping frame */
 	double min_diff, diff = 0.0;
 
-	while ((ch = getopt(argc, argv, "dt")) != -1) {
+	while ((ch = getopt(argc, argv, "dth")) != -1) {
 		switch (ch) {
 		case 'd':
 			diff_flag = 1;	/* print diff of every frame */
@@ -42,6 +43,7 @@ main(int argc, char **argv)
 		case 't':
 			duration = strtol(optarg, NULL, 10);
 			break;
+		case 'h':
 		default:
 			usage();
 			/* NOTREACHED */