1 files changed, 70 insertions, 0 deletions
diff --git a/src/assuan-error.c b/src/assuan-error.c
new file mode 100644
index 0000000..4eba7ff
--- /dev/null
+++ b/src/assuan-error.c
@@ -0,0 +1,70 @@
+/* assuan-error.c
+   Copyright (C) 2009 Free Software Foundation, Inc.
+
+   This file is part of Assuan.
+
+   Assuan is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   Assuan 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of 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 <stdio.h>
+#include <assert.h>
+#include <errno.h>
+
+#undef _ASSUAN_IN_LIBASSUAN /* undef to get all error codes. */
+#include "assuan.h"
+#include "assuan-defs.h"
+
+/* If true the modern gpg-error style error codes are used in the
+   API. */
+static gpg_err_source_t err_source;
+
+/* Enable gpg-error style error codes.  ERRSOURCE is one of gpg-error
+   sources.  Note, that this function is not thread-safe and should be
+   used right at startup. Switching back to the old style mode is not
+   supported. */
+void
+assuan_set_assuan_err_source (gpg_err_source_t errsource)
+{
+  errsource &= 0xff;
+  err_source = errsource ? errsource : 31 /*GPG_ERR_SOURCE_ANY*/;
+}
+
+
+/* Helper to map old style Assuan error codes to gpg-error codes.
+   This is used internally to keep an compatible ABI. */
+gpg_error_t
+_assuan_error (gpg_err_code_t errcode)
+{
+  return gpg_err_make (err_source, errcode);
+}
+
+
+/* A small helper function to treat EAGAIN transparently to the
+   caller.  */
+int
+_assuan_error_is_eagain (gpg_error_t err)
+{
+  if (gpg_err_code (err) == GPG_ERR_EAGAIN)
+    {
+      /* Avoid spinning by sleeping for one tenth of a second.  */
+       _assuan_usleep (100000);
+       return 1;
+    }
+  else
+    return 0;
+}