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annotate src/org/eclipse/jetty/http/MimeTypes.java @ 1023:27f3dc761452

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MimeTypes uses StringCache
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 01 Nov 2016 03:44:46 -0600
parents 6be43ef1eb96
children 2b769da7f67d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.http;
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20
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21 import java.util.Enumeration;
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22 import java.util.HashMap;
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23 import java.util.Iterator;
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24 import java.util.Map;
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25 import java.util.MissingResourceException;
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26 import java.util.ResourceBundle;
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27
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28 import org.eclipse.jetty.io.Buffer;
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29 import org.eclipse.jetty.io.StringCache;
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30 import org.eclipse.jetty.util.StringUtil;
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31 import org.slf4j.Logger;
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32 import org.slf4j.LoggerFactory;
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33
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34
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35 public final class MimeTypes
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36 {
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37 private static final Logger LOG = LoggerFactory.getLogger(MimeTypes.class);
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38
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39 public final static String
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40 FORM_ENCODED="application/x-www-form-urlencoded",
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41 MESSAGE_HTTP="message/http",
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42 MULTIPART_BYTERANGES="multipart/byteranges",
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43
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44 TEXT_HTML="text/html",
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45 TEXT_PLAIN="text/plain",
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46 TEXT_XML="text/xml",
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47 TEXT_JSON="text/json",
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48
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49 TEXT_HTML_8859_1="text/html;charset=ISO-8859-1",
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50 TEXT_PLAIN_8859_1="text/plain;charset=ISO-8859-1",
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51 TEXT_XML_8859_1="text/xml;charset=ISO-8859-1",
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52
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53 TEXT_HTML_UTF_8="text/html;charset=UTF-8",
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54 TEXT_PLAIN_UTF_8="text/plain;charset=UTF-8",
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55 TEXT_XML_UTF_8="text/xml;charset=UTF-8",
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56 TEXT_JSON_UTF_8="text/json;charset=UTF-8";
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57
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58 private final static String
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59 TEXT_HTML__8859_1="text/html; charset=ISO-8859-1",
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60 TEXT_PLAIN__8859_1="text/plain; charset=ISO-8859-1",
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61 TEXT_XML__8859_1="text/xml; charset=ISO-8859-1",
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62 TEXT_HTML__UTF_8="text/html; charset=UTF-8",
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63 TEXT_PLAIN__UTF_8="text/plain; charset=UTF-8",
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64 TEXT_XML__UTF_8="text/xml; charset=UTF-8",
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65 TEXT_JSON__UTF_8="text/json; charset=UTF-8";
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66
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67 private final static int
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68 FORM_ENCODED_ORDINAL=1,
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69 MESSAGE_HTTP_ORDINAL=2,
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70 MULTIPART_BYTERANGES_ORDINAL=3,
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71
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72 TEXT_HTML_ORDINAL=4,
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73 TEXT_PLAIN_ORDINAL=5,
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74 TEXT_XML_ORDINAL=6,
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75 TEXT_JSON_ORDINAL=7,
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76
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77 TEXT_HTML_8859_1_ORDINAL=8,
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78 TEXT_PLAIN_8859_1_ORDINAL=9,
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79 TEXT_XML_8859_1_ORDINAL=10,
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80
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81 TEXT_HTML_UTF_8_ORDINAL=11,
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82 TEXT_PLAIN_UTF_8_ORDINAL=12,
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83 TEXT_XML_UTF_8_ORDINAL=13,
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84 TEXT_JSON_UTF_8_ORDINAL=14;
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85
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86 private static int __index=15;
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87
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88 public final static StringCache CACHE = new StringCache();
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89
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90 public final static byte[]
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91 FORM_ENCODED_BYTES=CACHE.add(FORM_ENCODED,FORM_ENCODED_ORDINAL),
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92 MESSAGE_HTTP_BYTES=CACHE.add(MESSAGE_HTTP, MESSAGE_HTTP_ORDINAL),
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93 MULTIPART_BYTERANGES_BYTES=CACHE.add(MULTIPART_BYTERANGES,MULTIPART_BYTERANGES_ORDINAL),
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94
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95 TEXT_HTML_BYTES=CACHE.add(TEXT_HTML,TEXT_HTML_ORDINAL),
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96 TEXT_PLAIN_BYTES=CACHE.add(TEXT_PLAIN,TEXT_PLAIN_ORDINAL),
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97 TEXT_XML_BYTES=CACHE.add(TEXT_XML,TEXT_XML_ORDINAL),
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98 TEXT_JSON_BYTES=CACHE.add(TEXT_JSON,TEXT_JSON_ORDINAL),
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99
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100 TEXT_HTML_8859_1_BYTES=CACHE.add(TEXT_HTML_8859_1,TEXT_HTML_8859_1_ORDINAL),
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101 TEXT_PLAIN_8859_1_BYTES=CACHE.add(TEXT_PLAIN_8859_1,TEXT_PLAIN_8859_1_ORDINAL),
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102 TEXT_XML_8859_1_BYTES=CACHE.add(TEXT_XML_8859_1,TEXT_XML_8859_1_ORDINAL),
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103
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104 TEXT_HTML_UTF_8_BYTES=CACHE.add(TEXT_HTML_UTF_8,TEXT_HTML_UTF_8_ORDINAL),
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105 TEXT_PLAIN_UTF_8_BYTES=CACHE.add(TEXT_PLAIN_UTF_8,TEXT_PLAIN_UTF_8_ORDINAL),
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106 TEXT_XML_UTF_8_BYTES=CACHE.add(TEXT_XML_UTF_8,TEXT_XML_UTF_8_ORDINAL),
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107 TEXT_JSON_UTF_8_BYTES=CACHE.add(TEXT_JSON_UTF_8,TEXT_JSON_UTF_8_ORDINAL),
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108
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109 TEXT_HTML__8859_1_BYTES=CACHE.add(TEXT_HTML__8859_1,TEXT_HTML_8859_1_ORDINAL),
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110 TEXT_PLAIN__8859_1_BYTES=CACHE.add(TEXT_PLAIN__8859_1,TEXT_PLAIN_8859_1_ORDINAL),
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111 TEXT_XML__8859_1_BYTES=CACHE.add(TEXT_XML__8859_1,TEXT_XML_8859_1_ORDINAL),
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112
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113 TEXT_HTML__UTF_8_BYTES=CACHE.add(TEXT_HTML__UTF_8,TEXT_HTML_UTF_8_ORDINAL),
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114 TEXT_PLAIN__UTF_8_BYTES=CACHE.add(TEXT_PLAIN__UTF_8,TEXT_PLAIN_UTF_8_ORDINAL),
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115 TEXT_XML__UTF_8_BYTES=CACHE.add(TEXT_XML__UTF_8,TEXT_XML_UTF_8_ORDINAL),
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116 TEXT_JSON__UTF_8_BYTES=CACHE.add(TEXT_JSON__UTF_8,TEXT_JSON_UTF_8_ORDINAL);
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117
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118
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119 private final static Map<String,String> __dftMimeMap = new HashMap<String,String>();
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120 private final static Map<String,String> __encodings = new HashMap<String,String>();
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121 static
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122 {
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123 try
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124 {
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125 ResourceBundle mime = ResourceBundle.getBundle("org/eclipse/jetty/http/mime");
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126 Enumeration i = mime.getKeys();
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127 while(i.hasMoreElements())
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128 {
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129 String ext = (String)i.nextElement();
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130 String m = mime.getString(ext);
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131 // __dftMimeMap.put(ext.toLowerCase(),normalizeMimeType(m));
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132 __dftMimeMap.put(ext.toLowerCase(),m);
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133 }
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134 }
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135 catch(MissingResourceException e)
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136 {
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137 LOG.warn(e.toString());
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138 LOG.debug("",e);
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139 }
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140
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141 __encodings.put("text/html","ISO-8859-1");
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142 __encodings.put("text/plain","ISO-8859-1");
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143 __encodings.put("text/xml","UTF-8");
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144 __encodings.put("text/json","UTF-8");
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145
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146 /*
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147 TEXT_HTML_BUFFER.setAssociate("ISO-8859-1",TEXT_HTML_8859_1_BUFFER);
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148 TEXT_HTML_BUFFER.setAssociate("ISO_8859_1",TEXT_HTML_8859_1_BUFFER);
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149 TEXT_HTML_BUFFER.setAssociate("iso-8859-1",TEXT_HTML_8859_1_BUFFER);
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150 TEXT_PLAIN_BUFFER.setAssociate("ISO-8859-1",TEXT_PLAIN_8859_1_BUFFER);
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151 TEXT_PLAIN_BUFFER.setAssociate("ISO_8859_1",TEXT_PLAIN_8859_1_BUFFER);
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152 TEXT_PLAIN_BUFFER.setAssociate("iso-8859-1",TEXT_PLAIN_8859_1_BUFFER);
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153 TEXT_XML_BUFFER.setAssociate("ISO-8859-1",TEXT_XML_8859_1_BUFFER);
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154 TEXT_XML_BUFFER.setAssociate("ISO_8859_1",TEXT_XML_8859_1_BUFFER);
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155 TEXT_XML_BUFFER.setAssociate("iso-8859-1",TEXT_XML_8859_1_BUFFER);
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156
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157 TEXT_HTML_BUFFER.setAssociate("UTF-8",TEXT_HTML_UTF_8_BUFFER);
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158 TEXT_HTML_BUFFER.setAssociate("UTF8",TEXT_HTML_UTF_8_BUFFER);
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159 TEXT_HTML_BUFFER.setAssociate("utf8",TEXT_HTML_UTF_8_BUFFER);
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160 TEXT_HTML_BUFFER.setAssociate("utf-8",TEXT_HTML_UTF_8_BUFFER);
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161 TEXT_PLAIN_BUFFER.setAssociate("UTF-8",TEXT_PLAIN_UTF_8_BUFFER);
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162 TEXT_PLAIN_BUFFER.setAssociate("UTF8",TEXT_PLAIN_UTF_8_BUFFER);
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163 TEXT_PLAIN_BUFFER.setAssociate("utf8",TEXT_PLAIN_UTF_8_BUFFER);
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164 TEXT_PLAIN_BUFFER.setAssociate("utf-8",TEXT_PLAIN_UTF_8_BUFFER);
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165 TEXT_XML_BUFFER.setAssociate("UTF-8",TEXT_XML_UTF_8_BUFFER);
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166 TEXT_XML_BUFFER.setAssociate("UTF8",TEXT_XML_UTF_8_BUFFER);
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167 TEXT_XML_BUFFER.setAssociate("utf8",TEXT_XML_UTF_8_BUFFER);
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168 TEXT_XML_BUFFER.setAssociate("utf-8",TEXT_XML_UTF_8_BUFFER);
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169 TEXT_JSON_BUFFER.setAssociate("UTF-8",TEXT_JSON_UTF_8_BUFFER);
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170 TEXT_JSON_BUFFER.setAssociate("UTF8",TEXT_JSON_UTF_8_BUFFER);
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171 TEXT_JSON_BUFFER.setAssociate("utf8",TEXT_JSON_UTF_8_BUFFER);
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172 TEXT_JSON_BUFFER.setAssociate("utf-8",TEXT_JSON_UTF_8_BUFFER);
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173 */
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174 }
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175
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176 // replace setAssociate()
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177
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178 private static final Map<String,String> association = new HashMap<String,String>();
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179
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180 private static String key(String type,String charEncoding) {
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181 return (type+'~'+charEncoding).toLowerCase();
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182 }
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183
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184 private static void setAssociate(String type,String charEncoding,String result) {
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185 association.put( key(type,charEncoding), result );
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186 }
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187
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188 public static String getAssociate(String type,String charEncoding) {
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189 return association.get( key(type,charEncoding) );
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190 }
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191
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192 static {
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193 setAssociate(TEXT_HTML,"ISO-8859-1",TEXT_HTML_8859_1);
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194 setAssociate(TEXT_HTML,"ISO_8859_1",TEXT_HTML_8859_1);
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195 setAssociate(TEXT_PLAIN,"ISO-8859-1",TEXT_PLAIN_8859_1);
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196 setAssociate(TEXT_PLAIN,"ISO_8859_1",TEXT_PLAIN_8859_1);
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197 setAssociate(TEXT_XML,"ISO-8859-1",TEXT_XML_8859_1);
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198 setAssociate(TEXT_XML,"ISO_8859_1",TEXT_XML_8859_1);
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199
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200 setAssociate(TEXT_HTML,"UTF-8",TEXT_HTML_UTF_8);
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201 setAssociate(TEXT_HTML,"UTF8",TEXT_HTML_UTF_8);
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202 setAssociate(TEXT_PLAIN,"UTF-8",TEXT_PLAIN_UTF_8);
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203 setAssociate(TEXT_PLAIN,"UTF8",TEXT_PLAIN_UTF_8);
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204 setAssociate(TEXT_XML,"UTF-8",TEXT_XML_UTF_8);
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205 setAssociate(TEXT_XML,"UTF8",TEXT_XML_UTF_8);
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206 setAssociate(TEXT_JSON,"UTF-8",TEXT_JSON_UTF_8);
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207 setAssociate(TEXT_JSON,"UTF8",TEXT_JSON_UTF_8);
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208 }
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209
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210
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211
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212 /* ------------------------------------------------------------ */
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213 /** Get the MIME type by filename extension.
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214 * @param filename A file name
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215 * @return MIME type matching the longest dot extension of the
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216 * file name.
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217 */
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218 public String getMimeByExtension(String filename)
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219 {
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220 String type=null;
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221
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222 if (filename!=null)
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223 {
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224 int i=-1;
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225 while(type==null)
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226 {
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227 i=filename.indexOf(".",i+1);
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228
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229 if (i<0 || i>=filename.length())
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230 break;
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231
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232 String ext = filename.substring(i+1).toLowerCase();
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233 type = __dftMimeMap.get(ext);
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234 }
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235 }
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236
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237 if (type==null)
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238 {
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239 type = __dftMimeMap.get("*");
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240 }
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241
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242 return type;
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243 }
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244 /*
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245 private static synchronized Buffer normalizeMimeType(String type)
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246 {
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247 Buffer b = CACHE.get(type);
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248 if (b==null)
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249 b = CACHE.add(type,__index++);
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250 return b;
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251 }
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252 */
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253 public static String getCharsetFromContentType(String value)
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254 {
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255 switch(CACHE.getOrdinal(value))
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256 {
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diff changeset
257 case TEXT_HTML_8859_1_ORDINAL:
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258 case TEXT_PLAIN_8859_1_ORDINAL:
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259 case TEXT_XML_8859_1_ORDINAL:
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260 return StringUtil.__ISO_8859_1;
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261
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262 case TEXT_HTML_UTF_8_ORDINAL:
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263 case TEXT_PLAIN_UTF_8_ORDINAL:
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264 case TEXT_XML_UTF_8_ORDINAL:
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265 case TEXT_JSON_UTF_8_ORDINAL:
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266 return StringUtil.__UTF8;
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267 }
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268
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269 int i = 0;
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270 int end = value.length();
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271 int state=0;
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272 int start=0;
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273 boolean quote=false;
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diff changeset
274 for (;i<end;i++)
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275 {
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276 char b = value.charAt(i);
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277
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278 if (quote && state!=10)
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279 {
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280 if ('"'==b)
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281 quote=false;
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diff changeset
282 continue;
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283 }
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284
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285 switch(state)
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286 {
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diff changeset
287 case 0:
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288 if ('"'==b)
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289 {
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290 quote=true;
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diff changeset
291 break;
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292 }
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293 if (';'==b)
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diff changeset
294 state=1;
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diff changeset
295 break;
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296
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diff changeset
297 case 1: if ('c'==b) state=2; else if (' '!=b) state=0; break;
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298 case 2: if ('h'==b) state=3; else state=0;break;
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299 case 3: if ('a'==b) state=4; else state=0;break;
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300 case 4: if ('r'==b) state=5; else state=0;break;
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301 case 5: if ('s'==b) state=6; else state=0;break;
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302 case 6: if ('e'==b) state=7; else state=0;break;
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303 case 7: if ('t'==b) state=8; else state=0;break;
802
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304
1020
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305 case 8: if ('='==b) state=9; else if (' '!=b) state=0; break;
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306
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307 case 9:
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308 if (' '==b)
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309 break;
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310 if ('"'==b)
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311 {
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312 quote=true;
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313 start=i+1;
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314 state=10;
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315 break;
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316 }
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317 start=i;
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318 state=10;
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319 break;
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320
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321 case 10:
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322 if (!quote && (';'==b || ' '==b )||
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323 (quote && '"'==b ))
1023
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324 return value.substring(start,i);
1020
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325 }
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326 }
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327
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328 if (state==10)
1023
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329 return value.substring(start,i);
1020
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330
1023
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331 return __encodings.get(value.toLowerCase());
1020
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332 }
802
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333 }