/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.hc.core5.http.message;
import org.apache.hc.core5.http.HeaderElement;
import org.apache.hc.core5.http.NameValuePair;
import org.apache.hc.core5.util.CharArrayBuffer;
/**
* Interface for formatting elements of a header value.
* Instances of this interface are expected to be stateless and thread-safe.
*
* @since 4.0
*/
public interface HeaderValueFormatter {
/**
* Formats an array of header elements.
*
* @param buffer buffer to write formatted content to.
* @param elems the header elements to format
* @param quote {@code true} to always format with quoted values,
* {@code false} to use quotes only when necessary
*/
void formatElements(CharArrayBuffer buffer, HeaderElement[] elems, boolean quote);
/**
* Formats one header element.
*
* @param buffer buffer to write formatted content to.
* @param elem the header element to format
* @param quote {@code true} to always format with quoted values,
* {@code false} to use quotes only when necessary
*/
void formatHeaderElement(CharArrayBuffer buffer, HeaderElement elem, boolean quote);
/**
* Formats the parameters of a header element.
* That's a list of name-value pairs, to be separated by semicolons.
* This method will not generate a leading semicolon.
*
* @param buffer buffer to write formatted content to.
* @param nvps the parameters (name-value pairs) to format
* @param quote {@code true} to always format with quoted values,
* {@code false} to use quotes only when necessary
*/
void formatParameters(CharArrayBuffer buffer, NameValuePair[] nvps, boolean quote);
/**
* Formats one name-value pair, where the value is optional.
*
* @param buffer buffer to write formatted content to.
* @param nvp the name-value pair to format
* @param quote {@code true} to always format with a quoted value,
* {@code false} to use quotes only when necessary
*/
void formatNameValuePair(CharArrayBuffer buffer, NameValuePair nvp, boolean quote);
}