open_stream_for_read: read stream from stdin when filename is "-".

1 files changed, 6 insertions, 1 deletions

diff --git a/libcrystfel/src/stream.c b/libcrystfel/src/stream.c
index 91b1fb9e..8586c850 100644
--- a/libcrystfel/src/stream.c
+++ b/libcrystfel/src/stream.c
@@ -1264,7 +1264,12 @@ Stream *open_stream_for_read(const char *filename)
 	st = malloc(sizeof(struct _stream));
 	if ( st == NULL ) return NULL;
 
-	st->fh = fopen(filename, "r");
+	if ( strcmp(filename, "-") == 0 ) {
+		st->fh = stdin;
+	} else {
+		st->fh = fopen(filename, "r");
+	}
+
 	if ( st->fh == NULL ) {
 		free(st);
 		return NULL;