1 files changed, 78 insertions, 0 deletions
diff --git a/lib/grecsasrt.c b/lib/grecsasrt.c
new file mode 100644
index 0000000..29bd0bf
--- /dev/null
+++ b/lib/grecsasrt.c
@@ -0,0 +1,78 @@
+/* This file is part of GNU Pies
+   Copyright (C) 2015 Sergey Poznyakoff
+  
+   GNU Pies is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GNU Pies 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 a copy of the GNU General Public License
+   along with GNU Pies.  If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <errno.h>
+#include <grecs.h>
+#include "libpies.h"
+#include "grecsasrt.h"
+
+int
+assert_grecs_value_type (grecs_locus_t *locus,
+			 const grecs_value_t *value, int type)
+{
+  if (GRECS_VALUE_EMPTY_P (value))
+    {
+      grecs_error (locus, 0, _("expected %s"),
+		    grecs_data_type_string (type));
+      return 1;
+    }
+  if (value->type != type)
+    {
+      grecs_error (locus, 0, _("expected %s, but found %s"),
+		    grecs_data_type_string (type),
+		    grecs_data_type_string (value->type));
+      return 1;
+    }
+  return 0;
+}
+
+int
+assert_scalar_stmt (grecs_locus_t *locus, enum grecs_callback_command cmd)
+{
+  if (cmd != grecs_callback_set_value)
+    {
+      grecs_error (locus, 0, _("unexpected block statement"));
+      return 1;
+    }
+  return 0;
+}
+
+int
+conf_callback_url (enum grecs_callback_command cmd,
+		   grecs_locus_t *locus,
+		   void *varptr, grecs_value_t *value, void *cb_data)
+{
+  struct pies_url *url;
+
+  if (assert_scalar_stmt (locus, cmd)
+      || assert_grecs_value_type (locus, value, GRECS_TYPE_STRING))
+    return 1;
+  if (pies_url_create (&url, value->v.string))
+    {
+      grecs_error (locus, 0, _("%s: cannot create URL: %s"),
+		    value->v.string, strerror (errno));
+      return 0;
+    }
+  if (varptr)
+    *(struct pies_url **) varptr = url;
+  else
+    pies_url_destroy (&url);
+  return 0;
+}
+