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// SPDX-FileCopyrightText: 2018 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: Apache-2.0
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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