lib/jetty/org/eclipse/jetty/http/HttpHeader.java

   1 //
   2 //  ========================================================================
   3 //  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
   4 //  ------------------------------------------------------------------------
   5 //  All rights reserved. This program and the accompanying materials
   6 //  are made available under the terms of the Eclipse Public License v1.0
   7 //  and Apache License v2.0 which accompanies this distribution.
   8 //
   9 //      The Eclipse Public License is available at
  10 //      http://www.eclipse.org/legal/epl-v10.html
  11 //
  12 //      The Apache License v2.0 is available at
  13 //      http://www.opensource.org/licenses/apache2.0.php
  14 //
  15 //  You may elect to redistribute this code under either of these licenses.
  16 //  ========================================================================
  17 //
  18
  19 package org.eclipse.jetty.http;
  20
  21 import java.nio.ByteBuffer;
  22
  23 import org.eclipse.jetty.util.ArrayTrie;
  24 import org.eclipse.jetty.util.StringUtil;
  25 import org.eclipse.jetty.util.Trie;
  26
  27
  28 public enum HttpHeader
  29 {
  30     /* ------------------------------------------------------------ */
  31     /** General Fields.
  32      */
  33     CONNECTION("Connection"),
  34     CACHE_CONTROL("Cache-Control"),
  35     DATE("Date"),
  36     PRAGMA("Pragma"),
  37     PROXY_CONNECTION ("Proxy-Connection"),
  38     TRAILER("Trailer"),
  39     TRANSFER_ENCODING("Transfer-Encoding"),
  40     UPGRADE("Upgrade"),
  41     VIA("Via"),
  42     WARNING("Warning"),
  43     NEGOTIATE("Negotiate"),
  44
  45     /* ------------------------------------------------------------ */
  46     /** Entity Fields.
  47      */
  48     ALLOW("Allow"),
  49     CONTENT_ENCODING("Content-Encoding"),
  50     CONTENT_LANGUAGE("Content-Language"),
  51     CONTENT_LENGTH("Content-Length"),
  52     CONTENT_LOCATION("Content-Location"),
  53     CONTENT_MD5("Content-MD5"),
  54     CONTENT_RANGE("Content-Range"),
  55     CONTENT_TYPE("Content-Type"),
  56     EXPIRES("Expires"),
  57     LAST_MODIFIED("Last-Modified"),
  58
  59     /* ------------------------------------------------------------ */
  60     /** Request Fields.
  61      */
  62     ACCEPT("Accept"),
  63     ACCEPT_CHARSET("Accept-Charset"),
  64     ACCEPT_ENCODING("Accept-Encoding"),
  65     ACCEPT_LANGUAGE("Accept-Language"),
  66     AUTHORIZATION("Authorization"),
  67     EXPECT("Expect"),
  68     FORWARDED("Forwarded"),
  69     FROM("From"),
  70     HOST("Host"),
  71     IF_MATCH("If-Match"),
  72     IF_MODIFIED_SINCE("If-Modified-Since"),
  73     IF_NONE_MATCH("If-None-Match"),
  74     IF_RANGE("If-Range"),
  75     IF_UNMODIFIED_SINCE("If-Unmodified-Since"),
  76     KEEP_ALIVE("Keep-Alive"),
  77     MAX_FORWARDS("Max-Forwards"),
  78     PROXY_AUTHORIZATION("Proxy-Authorization"),
  79     RANGE("Range"),
  80     REQUEST_RANGE("Request-Range"),
  81     REFERER("Referer"),
  82     TE("TE"),
  83     USER_AGENT("User-Agent"),
  84     X_FORWARDED_FOR("X-Forwarded-For"),
  85     X_FORWARDED_PROTO("X-Forwarded-Proto"),
  86     X_FORWARDED_SERVER("X-Forwarded-Server"),
  87     X_FORWARDED_HOST("X-Forwarded-Host"),
  88
  89     /* ------------------------------------------------------------ */
  90     /** Response Fields.
  91      */
  92     ACCEPT_RANGES("Accept-Ranges"),
  93     AGE("Age"),
  94     ETAG("ETag"),
  95     LOCATION("Location"),
  96     PROXY_AUTHENTICATE("Proxy-Authenticate"),
  97     RETRY_AFTER("Retry-After"),
  98     SERVER("Server"),
  99     SERVLET_ENGINE("Servlet-Engine"),
 100     VARY("Vary"),
 101     WWW_AUTHENTICATE("WWW-Authenticate"),
 102
 103     /* ------------------------------------------------------------ */
 104     /** Other Fields.
 105      */
 106     COOKIE("Cookie"),
 107     SET_COOKIE("Set-Cookie"),
 108     SET_COOKIE2("Set-Cookie2"),
 109     MIME_VERSION("MIME-Version"),
 110     IDENTITY("identity"),
 111
 112     X_POWERED_BY("X-Powered-By"),
 113
 114     UNKNOWN("::UNKNOWN::");
 115
 116
 117     /* ------------------------------------------------------------ */
 118     public final static Trie<HttpHeader> CACHE= new ArrayTrie<>(512);
 119     static
 120     {
 121         for (HttpHeader header : HttpHeader.values())
 122             if (header!=UNKNOWN)
 123                 CACHE.put(header.toString(),header);
 124     }
 125
 126     private final String _string;
 127     private final byte[] _bytes;
 128     private final byte[] _bytesColonSpace;
 129     private final ByteBuffer _buffer;
 130
 131     /* ------------------------------------------------------------ */
 132     HttpHeader(String s)
 133     {
 134         _string=s;
 135         _bytes=StringUtil.getBytes(s);
 136         _bytesColonSpace=StringUtil.getBytes(s+": ");
 137         _buffer=ByteBuffer.wrap(_bytes);
 138     }
 139
 140     /* ------------------------------------------------------------ */
 141     public ByteBuffer toBuffer()
 142     {
 143         return _buffer.asReadOnlyBuffer();
 144     }
 145
 146     /* ------------------------------------------------------------ */
 147     public byte[] getBytes()
 148     {
 149         return _bytes;
 150     }
 151
 152     /* ------------------------------------------------------------ */
 153     public byte[] getBytesColonSpace()
 154     {
 155         return _bytesColonSpace;
 156     }
 157
 158     /* ------------------------------------------------------------ */
 159     public boolean is(String s)
 160     {
 161         return _string.equalsIgnoreCase(s);
 162     }
 163
 164     /* ------------------------------------------------------------ */
 165     public String asString()
 166     {
 167         return _string;
 168     }
 169
 170     /* ------------------------------------------------------------ */
 171     @Override
 172     public String toString()
 173     {
 174         return _string;
 175     }
 176
 177 }
 178