redesign the header API

I'm quite satisfied with this right now (though this doesn't say
anything about how I feel about it tomorrow), but it's ugly that some
guts (headers.Base) are exposed in the public API.

1 files changed, 31 insertions, 0 deletions

diff --git a/headers/errors.go b/headers/errors.go
new file mode 100644
index 0000000..6c1f5ab
--- /dev/null
+++ b/headers/errors.go
@@ -0,0 +1,31 @@
+/******************************************************************************
+*
+*  Copyright 2018 Stefan Majewsky <majewsky@gmx.net>
+*
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing, software
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+*
+******************************************************************************/
+
+package headers
+
+//MalformedHeaderError is generated when a response from Swift contains a
+//malformed header.
+type MalformedHeaderError struct {
+	Key        string
+	ParseError error
+}
+
+//Error implements the builtin/error interface.
+func (e MalformedHeaderError) Error() string {
+	return "Bad header " + e.Key + ": " + e.ParseError.Error()
+}