net.officefloor.server.http.servlet.HttpServletNonMaterialisedHttpHeaders Maven / Gradle / Ivy

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/*
 * OfficeFloor - http://www.officefloor.net
 * Copyright (C) 2005-2018 Daniel Sagenschneider
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package net.officefloor.server.http.servlet;

import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;

import net.officefloor.server.http.HttpHeader;
import net.officefloor.server.http.impl.NonMaterialisedHttpHeader;
import net.officefloor.server.http.impl.NonMaterialisedHttpHeaders;
import net.officefloor.server.http.impl.SerialisableHttpHeader;

/**
 * {@link HttpServlet} {@link NonMaterialisedHttpHeaders}.
 * 
 * @author Daniel Sagenschneider
 */
public class HttpServletNonMaterialisedHttpHeaders implements NonMaterialisedHttpHeaders {

	/**
	 * {@link NonMaterialisedHttpHeader} instances.
	 */
	private final List headers;

	/**
	 * Instantiate.
	 * 
	 * @param asyncRequest {@link HttpServletRequest}.
	 */
	public HttpServletNonMaterialisedHttpHeaders(HttpServletRequest asyncRequest) {

		// Create listing of headers
		this.headers = new ArrayList<>();
		Enumeration headerNames = asyncRequest.getHeaderNames();
		while (headerNames.hasMoreElements()) {
			String name = headerNames.nextElement();

			// Add header
			Enumeration headerValues = asyncRequest.getHeaders(name);
			while (headerValues.hasMoreElements()) {
				String value = headerValues.nextElement();
				HttpHeader header = new SerialisableHttpHeader(name, value);
				headers.add(new NonMaterialisedHttpHeader() {

					@Override
					public CharSequence getName() {
						return header.getName();
					}

					@Override
					public HttpHeader materialiseHttpHeader() {
						return header;
					}
				});
			}
		}
	}

	/*
	 * =================== NonMaterialisedHttpHeaders ====================
	 */

	@Override
	public Iterator iterator() {
		return this.headers.iterator();
	}

	@Override
	public int length() {
		return this.headers.size();
	}

}