- upgrade libidn

Example/Pods/libidn/lib/version.c

@@ -0,0 +1,59 @@
+/* version.c --- Version handling.
+   Copyright (C) 2002-2015 Simon Josefsson
+
+   This file is part of GNU Libidn.
+
+   GNU Libidn is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at
+       your option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at
+       your option) any later version.
+
+   or both in parallel, as here.
+
+   GNU Libidn is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "stringprep.h"
+
+#include <string.h> /* for strverscmp */
+
+/**
+ * stringprep_check_version:
+ * @req_version: Required version number, or NULL.
+ *
+ * Check that the version of the library is at minimum the requested one
+ * and return the version string; return NULL if the condition is not
+ * satisfied.  If a NULL is passed to this function, no check is done,
+ * but the version string is simply returned.
+ *
+ * See %STRINGPREP_VERSION for a suitable @req_version string.
+ *
+ * Return value: Version string of run-time library, or NULL if the
+ * run-time library does not meet the required version number.
+ */
+const char *
+stringprep_check_version (const char *req_version)
+{
+  if (!req_version || strverscmp (req_version, STRINGPREP_VERSION) <= 0)
+    return STRINGPREP_VERSION;
+
+  return NULL;
+}