align_detector: Enumerate directory contents if necessary

1 files changed, 14 insertions, 0 deletions

diff --git a/libcrystfel/src/utils.c b/libcrystfel/src/utils.c
index 10e4c38e..44faa7ee 100644
--- a/libcrystfel/src/utils.c
+++ b/libcrystfel/src/utils.c
@@ -933,6 +933,20 @@ int file_exists(const char *filename)
 }
 
 
+int is_dir(const char *filename)
+{
+	struct stat statbuf;
+	int r;
+
+	r = stat(filename, &statbuf);
+	if ( r != 0 ) {
+		return 0;
+	}
+
+	return S_ISDIR(statbuf.st_mode);
+}
+
+
 int compare_double(const void *av, const void *bv)
 {
 	double a = *(double *)av;