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/******************************************************************************
*
* 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 schwift
// FieldString is a helper type that provides type-safe access to a Swift header key
// whose value is a string. It cannot be directly constructed, but methods on
// the Headers types return this type. For example:
//
// hdr := NewAccountHeaders()
// //the following two statements are equivalent:
// hdr["X-Container-Read"] = ".r:*,.rlistings"
// hdr.ReadACL().Set(".r:*,.rlistings")
type FieldString struct {
h Headers
k string
}
// Exists checks whether there is a value for this header.
func (f FieldString) Exists() bool {
return f.h.Get(f.k) != ""
}
// Get returns the value for this header, or the empty string if there is no value.
func (f FieldString) Get() string {
return f.h.Get(f.k)
}
// Set writes a new value for this header into the corresponding headers
// instance.
func (f FieldString) Set(value string) {
f.h.Set(f.k, value)
}
// Del removes this key from the original headers instance, so that the
// key will remain unchanged on the server during Update().
func (f FieldString) Del() {
f.h.Del(f.k)
}
// Clear sets this key to an empty string in the original headers
// instance, so that the key will be removed on the server during Update().
func (f FieldString) Clear() {
f.h.Clear(f.k)
}
func (f FieldString) validate() error {
return nil
}
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