misc: Add cr_safe_string_chunk_insert_null

diff --git a/src/misc.h b/src/misc.h
index 58fce64..d3cbd60 100644 (file)
--- a/src/misc.h
+++ b/src/misc.h
@@ -285,6 +285,20 @@ cr_safe_string_chunk_insert(GStringChunk *chunk, const char *str)
     return g_string_chunk_insert(chunk, str);
 }
 
+/** Safe insert into GStringChunk. If str is NULL or "\0" inserts nothing and
+ * returns NULL.
+ * @param chunk     a GStringChunk
+ * @param str       string to add or NULL
+ * @return          pointer to the copy of str or NULL if str is NULL
+ */
+static inline gchar *
+cr_safe_string_chunk_insert_null(GStringChunk *chunk, const char *str)
+{
+    if (!str || *str == '\0') return NULL;
+    return g_string_chunk_insert(chunk, str);
+}
+
+
 /** Safe const insert into GStringChunk.
  * @param chunk     a GStringChunk
  * @param str       string to add or NULL