Fail if output file already exists

Author: twojstaryzdomu

bchunk.c

@@ -329,8 +329,12 @@ int writetrack(FILE *bf, struct track_t *track)
 	int16_t i;
 	float fl;
 
-	if (!(f = fopen(track->output, "wb")))
-		die_format(4, " Could not fopen track file: %s\n", strerror(errno));
+	if (!(f = fopen(track->output, "wbx"))) {
+		if (errno == EEXIST)
+			die_format(2, "%2d: output file %s already exists, aborting\n", track->num, track->output);
+		else
+			die_format(4, " Could not fopen track file: %s\n", strerror(errno));
+	}
 
 	printf("%2d: %s ", track->num, track->output);