org.glassfish.grizzly.http.util.Header Maven / Gradle / Ivy
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 2011-2015 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package org.glassfish.grizzly.http.util; import java.util.Locale; import java.util.Map; import java.util.TreeMap; import org.glassfish.grizzly.utils.Charsets; /** * Enumeration of all headers as defined in
null. */ public static Header find(final String name) { if (name == null || name.isEmpty()) { return null; } return VALUES.get(name); } // --------------------------------------------------------- Private Methods private boolean equalsIgnoreCase(final byte[] b) { final int len = headerNameBytes.length; if (b == null || len != b.length) { return false; } for (int i = 0; i < len; i++) { if (headerNameLowerCaseBytes[i] != Ascii.toLower(b[i])) { return false; } } return true; } // ---------------------------------------------------------- Nested Classes // private static final class RecyclableHeapBuffer extends HeapBuffer implements Cacheable { // // private static final ThreadCache.CachedTypeIndexRFC 2616
. * * @since 2.1.2 */ public enum Header { Accept("Accept"), AcceptCharset("Accept-Charset"), AcceptEncoding("Accept-Encoding"), AcceptRanges("Accept-Ranges"), Age("Age"), Allow("Allow"), Authorization("Authorization"), CacheControl("Cache-Control"), Cookie("Cookie"), Connection("Connection"), ContentDisposition("Content-Disposition"), ContentEncoding("Content-Encoding"), ContentLanguage("Content-Language"), ContentLength("Content-Length"), ContentLocation("Content-Location"), ContentMD5("Content-MD5"), ContentRange("Content-Range"), ContentType("Content-Type"), Date("Date"), ETag("ETag"), Expect("Expect"), Expires("Expires"), From("From"), Host("Host"), IfMatch("If-Match"), IfModifiedSince("If-Modified-Since"), IfNoneMatch("If-None-Match"), IfRange("If-Range"), IfUnmodifiedSince("If-Unmodified-Since"), KeepAlive("Keep-Alive"), LastModified("Last-Modified"), Location("Location"), MaxForwards("Max-Forwards"), Pragma("Pragma"), ProxyAuthenticate("Proxy-Authenticate"), ProxyAuthorization("Proxy-Authorization"), ProxyConnection("Proxy-Connection"), Range("Range"), Referer("Referer"), RetryAfter("Retry-After"), Server("Server"), SetCookie("Set-Cookie"), TE("TE"), Trailer("Trailer"), TransferEncoding("Transfer-Encoding"), Upgrade("Upgrade"), UserAgent("User-Agent"), Vary("Vary"), Via("Via"), Warnings("Warning"), WWWAuthenticate("WWW-Authenticate"), XPoweredBy("X-Powered-By"), HTTP2Settings("HTTP2-Settings"); // ----------------------------------------------------------------- Statics private static final MapVALUES = new TreeMap (String.CASE_INSENSITIVE_ORDER); static { for (final Header h : Header.values()) { VALUES.put(h.toString(), h); } } // --------------------------------------------------------- Per Enum Fields private final byte[] headerNameBytes; private final byte[] headerNameLowerCaseBytes; private final String headerName; private final String headerNameLowerCase; private final int length; // ------------------------------------------------------------ Constructors Header(final String headerName) { this.headerName = headerName; headerNameBytes = headerName.getBytes(Charsets.ASCII_CHARSET); this.headerNameLowerCase = headerName.toLowerCase(Locale.ENGLISH); headerNameLowerCaseBytes = headerNameLowerCase.getBytes(Charsets.ASCII_CHARSET); length = headerNameBytes.length; } // ---------------------------------------------------------- Public Methods /** * * Returns the byte representation of this header encoded using *
* * @return the byte representation of this header encoded using *ISO-8859-1
. *ISO-8859-1
. */ public final byte[] getBytes() { return headerNameBytes; } /** ** Returns the lower-case {@link String} representation of this header. *
* * @return the lower-case {@link String} representation of this header */ public final String getLowerCase() { return headerNameLowerCase; } /** ** Returns the lower-case byte representation of this header encoded using *
* * @return the lower-case byte representation of this header encoded using *ISO-8859-1
. *ISO-8859-1
. */ public final byte[] getLowerCaseBytes() { return headerNameLowerCaseBytes; } /** ** Returns the length this header encoded using
* * @return the length this header encoded usingISO-8859-1
. *ISO-8859-1
. */ public final int getLength() { return length; } /** ** Returns the name of the header properly hyphenated if necessary. *
* * @return Returns the name of the header properly hyphenated if necessary. */ @Override public final String toString() { return headerName; } /** ** Returns the US-ASCII encoded byte representation of this
* @return the US-ASCII encoded byte representation of thisHeader
. *Header
. */ public final byte[] toByteArray() { return headerNameBytes; } /** ** Attempts to find a HTTP header by it's standard textual definition which * may differ from value value returned by {@link #name}. Note that this * search is case insensitive. *
* * @param name the name of theHeader
to attempt to find. * * @return theHeader
for the specified text representation. * If noHeader
matches or if the specified argument is *null/zero-length
, this method returnsCACHE_IDX = // ThreadCache.obtainIndex(RecyclableHeapBuffer.class, 64); // // // -------------------------------------------------------- Constructors // // // RecyclableHeapBuffer(byte[] heap, int offset, int cap) { // super(heap, offset, cap); // allowBufferDispose(true); // } // // // // --------------------------------------------- Methods from HeapBuffer // // @Override // public boolean isReadOnly() { // return true; // } // // @Override // public void dispose() { // recycle(); // } // // // ---------------------------------------------- Methods from Cacheable // // // @Override // public void recycle() { // this.heap = null; // this.byteBuffer = null; // this.offset = 0; // this.cap = 0; // this.lim = 0; // ThreadCache.putToCache(CACHE_IDX, this); // } // // // // ----------------------------------------------------- Private Methods // // // private static RecyclableHeapBuffer create(final byte[] heap) { // // RecyclableHeapBuffer b = ThreadCache.takeFromCache(CACHE_IDX); // if (b == null) { // b = new RecyclableHeapBuffer(heap, 0, heap.length); // } else { // b.init(heap); // } // return b; // // } // // private void init(byte[] heap) { // // this.heap = heap; // this.offset = 0; // this.cap = heap.length; // this.lim = cap; // // } // // } }
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