1 files changed, 34 insertions, 0 deletions
diff --git a/argp-standalone/strndup.c b/argp-standalone/strndup.c
new file mode 100644
index 00000000000..4147b7a2051
--- /dev/null
+++ b/argp-standalone/strndup.c
@@ -0,0 +1,34 @@
+/* strndup.c
+ *
+ */
+
+/* Written by Niels Möller <nisse@lysator.liu.se>
+ *
+ * This file is hereby placed in the public domain.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+char *
+strndup (const char *, size_t);
+
+char *
+strndup (const char *s, size_t size)
+{
+  char *r;
+  char *end = memchr(s, 0, size);
+  
+  if (end)
+    /* Length + 1 */
+    size = end - s + 1;
+  
+  r = malloc(size);
+
+  if (size)
+    {
+      memcpy(r, s, size-1);
+      r[size-1] = '\0';
+    }
+  return r;
+}