Rearrange the file tree.

[u/mdw/catacomb] / key / key-error.c

diff --git a/key/key-error.c b/key/key-error.c
new file mode 100644 (file)
index 0000000..a091997
--- /dev/null
+++ b/key/key-error.c
@@ -0,0 +1,60 @@
+/* -*-c-*-
+ *
+ * Translating key error codes into strings
+ *
+ * (c) 2000 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * Catacomb 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 Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with Catacomb; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <mLib/macros.h>
+#include "key-error.h"
+
+/*----- Error reporting ---------------------------------------------------*/
+
+/* --- @key_strerror@ --- *
+ *
+ * Arguments:  @int err@ = error code from @key_new@
+ *
+ * Returns:    Pointer to error string.
+ *
+ * Use:                Translates a @KERR@ error code into a human-readable
+ *             string.
+ */
+
+const char *key_strerror(int err)
+{
+  static const char *const tab[] = {
+#define ENTRY(tag, num, str) str,
+    KEY_ERRORS(ENTRY)
+#undef ENTRY
+    "Unknown error code"
+  };
+
+  unsigned e = -err;
+  if (e >= N(tab))
+    e = N(tab) - 1;
+ return (tab[e]);
+}
+
+/*----- That's all, folks -------------------------------------------------*/