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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * ====================================================================
 * 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.http.message;

import java.io.Serializable;

import org.apache.http.FormattedHeader;
import org.apache.http.HeaderElement;
import org.apache.http.ParseException;
import org.apache.http.util.Args;
import org.apache.http.util.CharArrayBuffer;

/**
 * This class represents a raw HTTP header whose content is parsed 'on demand'
 * only when the header value needs to be consumed.
 *
 * @since 4.0
 */
public class BufferedHeader implements FormattedHeader, Cloneable, Serializable {

    private static final long serialVersionUID = -2768352615787625448L;

    /**
     * Header name.
     */
    private final String name;

    /**
     * The buffer containing the entire header line.
     */
    private final CharArrayBuffer buffer;

    /**
     * The beginning of the header value in the buffer
     */
    private final int valuePos;


    /**
     * Creates a new header from a buffer.
     * The name of the header will be parsed immediately,
     * the value only if it is accessed.
     *
     * @param buffer    the buffer containing the header to represent
     *
     * @throws ParseException   in case of a parse error
     */
    public BufferedHeader(final CharArrayBuffer buffer)
        throws ParseException {

        super();
        Args.notNull(buffer, "Char array buffer");
        final int colon = buffer.indexOf(':');
        if (colon == -1) {
            throw new ParseException
                ("Invalid header: " + buffer.toString());
        }
        final String s = buffer.substringTrimmed(0, colon);
        if (s.isEmpty()) {
            throw new ParseException
                ("Invalid header: " + buffer.toString());
        }
        this.buffer = buffer;
        this.name = s;
        this.valuePos = colon + 1;
    }


    @Override
    public String getName() {
        return this.name;
    }

    @Override
    public String getValue() {
        return this.buffer.substringTrimmed(this.valuePos, this.buffer.length());
    }

    @Override
    public HeaderElement[] getElements() throws ParseException {
        final ParserCursor cursor = new ParserCursor(0, this.buffer.length());
        cursor.updatePos(this.valuePos);
        return BasicHeaderValueParser.INSTANCE.parseElements(this.buffer, cursor);
    }

    @Override
    public int getValuePos() {
        return this.valuePos;
    }

    @Override
    public CharArrayBuffer getBuffer() {
        return this.buffer;
    }

    @Override
    public String toString() {
        return this.buffer.toString();
    }

    @Override
    public Object clone() throws CloneNotSupportedException {
        // buffer is considered immutable
        // no need to make a copy of it
        return super.clone();
    }

}