From 12fa6375acb536e61f41c006fc783e5e8f0c7a92 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Fri, 21 Feb 2020 17:00:59 +0100
Subject: Add safe_strdup() to utils

---
 libcrystfel/src/utils.c | 7 +++++++
 libcrystfel/src/utils.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/libcrystfel/src/utils.c b/libcrystfel/src/utils.c
index de1dc2f4..0c01c069 100644
--- a/libcrystfel/src/utils.c
+++ b/libcrystfel/src/utils.c
@@ -503,6 +503,13 @@ char *check_prefix(char *prefix)
 }
 
 
+char *safe_strdup(const char *in)
+{
+	if ( in == NULL ) return NULL;
+	return strdup(in);
+}
+
+
 char *safe_basename(const char *in)
 {
 	int i;
diff --git a/libcrystfel/src/utils.h b/libcrystfel/src/utils.h
index b2694f2a..f406ef6c 100644
--- a/libcrystfel/src/utils.h
+++ b/libcrystfel/src/utils.h
@@ -222,6 +222,7 @@ extern pthread_mutex_t stderr_lock;
 
 extern char *check_prefix(char *prefix);
 extern char *safe_basename(const char *in);
+extern char *safe_strdup(const char *in);
 extern void strip_extension(char *bfn);
 extern char *load_entire_file(const char *filename);
 
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