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annotate web/src/luan/modules/web/HttpServicer.java @ 477:b8ddd55c9b11

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delete LuanExitException
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 11 May 2015 14:36:33 -0600
parents bf5e62a9090c
children 44caaa6a3d92
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diff changeset
1 package luan.modules.web;
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2
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3 import java.io.InputStream;
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4 import java.io.BufferedInputStream;
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5 import java.io.PrintWriter;
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6 import java.io.IOException;
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7 import java.util.Map;
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8 import java.util.HashMap;
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9 import java.util.AbstractMap;
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10 import java.util.Set;
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11 import java.util.List;
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12 import java.util.ArrayList;
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13 import java.util.Arrays;
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14 import java.util.Iterator;
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15 import java.util.Enumeration;
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16 import javax.servlet.ServletOutputStream;
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17 import javax.servlet.ServletException;
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18 import javax.servlet.http.Cookie;
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19 import javax.servlet.http.HttpServletRequest;
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20 import javax.servlet.http.HttpServletResponse;
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21 import javax.servlet.http.HttpSession;
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22 import javax.servlet.http.Part;
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23 import org.slf4j.Logger;
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24 import org.slf4j.LoggerFactory;
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25 import org.eclipse.jetty.util.MultiPartInputStream;
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26 import luan.Luan;
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27 import luan.LuanState;
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28 import luan.LuanFunction;
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29 import luan.LuanElement;
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30 import luan.LuanException;
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31 import luan.LuanTable;
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32 import luan.LuanMeta;
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33 import luan.LuanJavaFunction;
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34 import luan.LuanPropertyMeta;
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35 import luan.DeepCloner;
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36 import luan.modules.PackageLuan;
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37 import luan.modules.IoLuan;
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38 import luan.modules.TableLuan;
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39 import luan.modules.Utils;
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40
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41
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42 public final class HttpServicer {
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43 private static final Logger logger = LoggerFactory.getLogger(HttpServicer.class);
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44
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45 public static boolean service(LuanState luan,HttpServletRequest request,HttpServletResponse response,String modName)
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46 throws LuanException
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47 {
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48 LuanFunction fn;
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49 synchronized(luan) {
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50 Object mod = PackageLuan.load(luan,modName);
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51 if( mod==null )
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52 return false;
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53 if( !(mod instanceof LuanTable) )
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54 throw luan.exception( "module '"+modName+"' must return a table" );
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55 LuanTable tbl = (LuanTable)mod;
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56 if( Boolean.TRUE.equals(tbl.get(luan,"per_session")) ) {
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57 HttpSession session = request.getSession();
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58 LuanState sessionLuan = (LuanState)session.getValue("luan");
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59 if( sessionLuan!=null ) {
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60 luan = sessionLuan;
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61 } else {
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62 DeepCloner cloner = new DeepCloner();
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63 luan = (LuanState)cloner.deepClone(luan);
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64 session.putValue("luan",luan);
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65 }
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66 tbl = (LuanTable)PackageLuan.require(luan,modName);
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67 fn = getService(luan,tbl);
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68 } else {
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69 fn = getService(luan,tbl);
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70 DeepCloner cloner = new DeepCloner();
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71 luan = (LuanState)cloner.deepClone(luan);
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72 fn = (LuanFunction)cloner.get(fn);
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73 }
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74 }
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75
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76 LuanTable module = (LuanTable)PackageLuan.require(luan,"luan:web/Http");
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77 HttpServicer lib = new HttpServicer(request,response);
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78 try {
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79 module.put( luan, "request", lib.requestTable() );
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80 module.put( luan, "response", lib.responseTable() );
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81 module.put( luan, "session", lib.sessionTable() );
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82 /*
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83 module.put( "write", new LuanJavaFunction(
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84 HttpServicer.class.getMethod( "text_write", LuanState.class, new Object[0].getClass() ), lib
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85 ) );
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86 */
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87 } catch(NoSuchMethodException e) {
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88 throw new RuntimeException(e);
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89 }
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90
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91 luan.call(fn,"<http>");
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92 return true;
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93 }
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94
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95 private static LuanFunction getService(LuanState luan,LuanTable tbl)
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96 throws LuanException
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97 {
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98 Object service = tbl.get(luan,"service");
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99 if( service == null )
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100 throw luan.exception( "function 'service' is not defined" );
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101 if( !(service instanceof LuanFunction) )
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102 throw luan.exception( "'service' must be a function but is a " + Luan.type(service) );
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103 return (LuanFunction)service;
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104 }
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105
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106
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107 private final HttpServletRequest request;
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108 private final HttpServletResponse response;
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109 // private PrintWriter writer = null;
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110 // private ServletOutputStream sos = null;
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111
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112 private HttpServicer(HttpServletRequest request,HttpServletResponse response) {
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113 this.request = request;
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114 this.response = response;
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115 }
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116
136
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117 private LuanTable requestTable() throws NoSuchMethodException {
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118 LuanTable tbl = LuanPropertyMeta.INSTANCE.newTable();
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119 LuanTable getters = LuanPropertyMeta.INSTANCE.getters(tbl);
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120 tbl.rawPut("java",request);
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121 LuanTable parameters = new NameMeta() {
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122
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123 @Override Object get(String name) {
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124 return request.getParameter(name);
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125 }
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126
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127 @Override protected Iterator keys(LuanTable tbl) {
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128 return new EnumerationIterator(request.getParameterNames());
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129 }
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130
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131 @Override protected String type(LuanTable tbl) {
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132 return "request.parameters";
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133 }
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134
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135 }.newTable();
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136 tbl.rawPut( "parameters", parameters );
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137 add( tbl, "get_parameter_values", String.class );
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138 LuanTable headers = new NameMeta() {
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139
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140 @Override Object get(String name) {
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141 return request.getHeader(name);
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142 }
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143
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144 @Override protected Iterator keys(LuanTable tbl) {
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145 return new EnumerationIterator(request.getHeaderNames());
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146 }
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147
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148 @Override protected String type(LuanTable tbl) {
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149 return "request.headers";
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150 }
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151
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152 }.newTable();
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153 tbl.rawPut( "headers", headers );
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154 getters.rawPut( "method", new LuanJavaFunction(
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155 HttpServletRequest.class.getMethod( "getMethod" ), request
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156 ) );
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157 getters.rawPut( "path", new LuanJavaFunction(
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158 HttpServletRequest.class.getMethod( "getRequestURI" ), request
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159 ) );
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160 getters.rawPut( "server_name", new LuanJavaFunction(
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161 HttpServletRequest.class.getMethod( "getServerName" ), request
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162 ) );
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163 getters.rawPut( "url", new LuanJavaFunction(
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164 HttpServicer.class.getMethod( "getURL" ), this
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165 ) );
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166 getters.rawPut( "query_string", new LuanJavaFunction(
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167 HttpServicer.class.getMethod( "getQueryString" ), this
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168 ) );
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169 getters.rawPut( "remote_address", new LuanJavaFunction(
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170 HttpServletRequest.class.getMethod( "getRemoteAddr" ), request
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171 ) );
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172 LuanTable cookies = new LuanMeta() {
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173
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174 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) {
225
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175 if( !(key instanceof String) )
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176 return null;
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177 String name = (String)key;
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178 return getCookieValue(request,name);
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179 }
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180
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181 @Override protected Iterator<Object> keys(LuanTable tbl) {
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182 return new Iterator<Object>() {
225
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183 final Cookie[] cookies = request.getCookies();
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184 int i = 0;
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185
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186 @Override public boolean hasNext() {
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187 return i < cookies.length;
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188 }
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189 @Override public Object next() {
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190 return cookies[i++].getName();
225
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191 }
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192 @Override public void remove() {
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193 throw new UnsupportedOperationException();
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194 }
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195 };
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196 }
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197
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198 @Override protected String type(LuanTable tbl) {
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199 return "request.cookies";
225
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200 }
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201
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202 }.newTable();
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203 tbl.rawPut( "cookies", cookies );
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204
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205 String contentType = request.getContentType();
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206 if( contentType!=null && contentType.startsWith("multipart/form-data") ) {
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207 try {
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208 InputStream in = new BufferedInputStream(request.getInputStream());
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209 final MultiPartInputStream mpis = new MultiPartInputStream(in,contentType,null,null);
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210 mpis.setDeleteOnExit(true);
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211 parameters = new LuanTable();
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212 final Map map = new HashMap();
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213 for( Part p : mpis.getParts() ) {
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214 final MultiPartInputStream.MultiPart part = (MultiPartInputStream.MultiPart)p;
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215 String name = part.getName();
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216 Object value;
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217 String filename = part.getContentDispositionFilename();
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218 if( filename == null ) {
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219 value = new String(part.getBytes());
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220 } else {
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221 LuanTable partTbl = LuanPropertyMeta.INSTANCE.newTable();
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222 partTbl.rawPut("filename",filename);
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223 partTbl.rawPut("content_type",part.getContentType());
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224 LuanPropertyMeta.INSTANCE.getters(partTbl).rawPut( "content", new LuanFunction() {
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225 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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226 try {
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227 InputStream in = part.getInputStream();
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228 byte[] content = Utils.readAll(in);
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229 in.close();
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230 return content;
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231 } catch(IOException e) {
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232 throw new RuntimeException(e);
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233 }
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234 }
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235 } );
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236 value = partTbl;
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237 }
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238 parameters.rawPut(name,value);
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239 Object old = map.get(name);
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240 if( old == null ) {
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241 map.put(name,value);
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242 } else if( old instanceof Object[] ) {
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243 Object[] aOld = (Object[])old;
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244 Object[] aNew = new Object[aOld.length+1];
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245 System.arraycopy(aOld,0,aNew,0,aOld.length);
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246 aNew[aOld.length] = value;
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247 map.put(name,aNew);
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248 } else {
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249 map.put(name,new Object[]{old,value});
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250 }
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251 }
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252 tbl.rawPut( "parameters", parameters );
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253 tbl.rawPut( "get_parameter_values", new LuanFunction() {
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254 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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255 return args.length==0 ? null : map.get(args[0]);
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256 }
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257 } );
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258 } catch(IOException e) {
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259 throw new RuntimeException(e);
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260 } catch(ServletException e) {
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261 throw new RuntimeException(e);
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262 }
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263 }
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264
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265 return tbl;
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266 }
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267
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268 private LuanTable responseTable() throws NoSuchMethodException {
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269 LuanTable tbl = LuanPropertyMeta.INSTANCE.newTable();
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270 LuanTable getters = LuanPropertyMeta.INSTANCE.getters(tbl);
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271 LuanTable setters = LuanPropertyMeta.INSTANCE.setters(tbl);
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272 tbl.rawPut("java",response);
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273 tbl.rawPut( "send_redirect", new LuanJavaFunction(
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274 HttpServletResponse.class.getMethod( "sendRedirect", String.class ), response
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275 ) );
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276 tbl.rawPut( "send_error", new LuanJavaFunction(
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277 HttpServletResponse.class.getMethod( "sendError", Integer.TYPE, String.class ), response
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278 ) );
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279 LuanTable headers = new NameMeta() {
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280
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281 @Override Object get(String name) {
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282 return response.getHeader(name);
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283 }
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284
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285 @Override protected Iterator keys(LuanTable tbl) {
222
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286 return response.getHeaderNames().iterator();
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287 }
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288
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289 @Override public boolean canNewindex() {
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290 return true;
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291 }
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292
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293 @Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object val) {
223
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294 if( !(key instanceof String) )
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295 throw new IllegalArgumentException("key must be string for headers table");
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296 String name = (String)key;
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297 if( val instanceof String ) {
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298 response.setHeader(name,(String)val);
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299 return;
223
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300 }
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301 Integer i = Luan.asInteger(val);
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302 if( i != null ) {
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303 response.setIntHeader(name,i);
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304 return;
223
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305 }
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306 throw new IllegalArgumentException("value must be string or integer for headers table");
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307 }
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308
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309 @Override protected String type(LuanTable tbl) {
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310 return "response.headers";
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311 }
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312
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313 }.newTable();
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314 tbl.rawPut( "headers", headers );
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315 getters.rawPut( "content_type", new LuanJavaFunction(
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316 HttpServletResponse.class.getMethod( "getContentType" ), response
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317 ) );
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318 setters.rawPut( "content_type", new LuanJavaFunction(
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319 HttpServletResponse.class.getMethod( "setContentType", String.class ), response
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320 ) );
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321 getters.rawPut( "character_encoding", new LuanJavaFunction(
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322 HttpServletResponse.class.getMethod( "getCharacterEncoding" ), response
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323 ) );
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324 setters.rawPut( "character_encoding", new LuanJavaFunction(
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325 HttpServletResponse.class.getMethod( "setCharacterEncoding", String.class ), response
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326 ) );
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327 add( tbl, "text_writer" );
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328 add( tbl, "set_cookie", String.class, String.class, Boolean.TYPE, String.class );
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329 add( tbl, "remove_cookie", String.class, String.class );
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330 try {
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331 getters.rawPut( "status", new LuanJavaFunction(
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332 HttpServletResponse.class.getMethod( "getStatus" ), response
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333 ) );
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334 } catch(NoSuchMethodException e) {
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335 logger.info("please upgrade jetty");
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336 }
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337 setters.rawPut( "status", new LuanJavaFunction(
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338 HttpServletResponse.class.getMethod( "setStatus", Integer.TYPE ), response
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339 ) );
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340 return tbl;
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341 }
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342
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343 private LuanTable sessionTable() throws NoSuchMethodException {
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344 LuanTable tbl = new LuanTable();
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345 LuanTable attributes = new NameMeta() {
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346
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347 @Override Object get(String name) {
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348 return request.getSession().getAttribute(name);
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349 }
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350
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diff changeset
351 @Override protected Iterator keys(LuanTable tbl) {
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352 return new EnumerationIterator(request.getSession().getAttributeNames());
222
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353 }
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354
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diff changeset
355 @Override public boolean canNewindex() {
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356 return true;
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357 }
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358
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diff changeset
359 @Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object val) {
222
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360 if( !(key instanceof String) )
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361 throw new IllegalArgumentException("key must be string for session attributes table");
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362 String name = (String)key;
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363 request.getSession().setAttribute(name,val);
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364 }
416
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365
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366 @Override protected String type(LuanTable tbl) {
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367 return "session.attributes";
222
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368 }
416
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369
405
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370 }.newTable();
427
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371 tbl.rawPut( "attributes", attributes );
217
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372 return tbl;
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373 }
89
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374
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375 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException {
427
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376 t.rawPut( method, new LuanJavaFunction(HttpServicer.class.getMethod(method,parameterTypes),this) );
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377 }
138
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378 /*
136
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379 public void text_write(LuanState luan,Object... args) throws LuanException, IOException {
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380 if( writer == null )
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381 writer = response.getWriter();
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382 for( Object obj : args ) {
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383 writer.print( luan.toString(obj) );
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384 }
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385 }
138
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386 */
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387 public LuanTable text_writer() throws IOException {
168
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388 return IoLuan.textWriter(response.getWriter());
138
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389 }
136
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390
413
8937263f59f6 add __pairs;
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391 public Object[] get_parameter_values(String name) {
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392 return request.getParameterValues(name);
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393 }
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394
89
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395 public void set_cookie(String name,String value,boolean isPersistent, String domain) {
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396 setCookie(request,response,name,value,isPersistent,domain);
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397 }
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398
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399 public void remove_cookie(String name, String domain) {
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400 removeCookie(request,response,name,domain);
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401 }
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402
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403
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404 // static utils
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405
407
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406 public String getQueryString() {
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407 return getQueryString(request);
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408 }
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409
89
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410 public static String getQueryString(HttpServletRequest request) {
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411 return getQueryString(request,0);
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412 }
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413
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414 public static String getQueryString(HttpServletRequest request,int maxValueLen) {
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415 String method = request.getMethod();
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416 if( method.equals("GET") )
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417 return request.getQueryString();
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418 if( !method.equals("POST") && !method.equals("HEAD") )
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419 throw new RuntimeException(method);
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420 Enumeration en = request.getParameterNames();
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421 StringBuilder queryBuf = new StringBuilder();
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422 if( !en.hasMoreElements() )
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423 return null;
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424 do {
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425 String param = (String)en.nextElement();
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426 String value = request.getParameter(param);
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427 if( maxValueLen > 0 ) {
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428 int len = value.length();
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429 if( len > maxValueLen )
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430 value = value.substring(0,maxValueLen) + "..." + (len-maxValueLen);
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431 }
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432 queryBuf.append(param);
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433 queryBuf.append('=');
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434 queryBuf.append(value);
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diff changeset
435 queryBuf.append('&');
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436 } while( en.hasMoreElements() );
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diff changeset
437 queryBuf.deleteCharAt(queryBuf.length() - 1);
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diff changeset
438 return queryBuf.toString();
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439 }
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diff changeset
440
407
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diff changeset
441 public String getURL() {
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442 return getURL(request);
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443 }
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444
313
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445 public static String getURL(HttpServletRequest request) {
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446 return getURL(request,0);
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447 }
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448
313
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diff changeset
449 public static String getURL(HttpServletRequest request,int maxValueLen) {
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450 // StringBuffer buf = HttpUtils.getRequestURL(request);
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diff changeset
451 StringBuffer buf = request.getRequestURL();
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diff changeset
452 String qStr = getQueryString(request,maxValueLen);
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453 if(qStr != null && qStr.length() > 0) {
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diff changeset
454 buf.append('?');
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diff changeset
455 buf.append(qStr);
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456 }
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diff changeset
457 return buf.toString();
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458 }
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diff changeset
459
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diff changeset
460 private static String escape(String value) {
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diff changeset
461 return value.replaceAll(";", "%3B");
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462 }
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diff changeset
463
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diff changeset
464 private static String unescape(String value) {
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diff changeset
465 return value.replaceAll("%3B", ";");
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466 }
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diff changeset
467
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diff changeset
468 private static Cookie getCookie(HttpServletRequest request,String name) {
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diff changeset
469 Cookie[] cookies = request.getCookies();
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diff changeset
470 if( cookies == null )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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471 return null;
8ef2d6701541 improve HttpLib
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parents: 88
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472 for (Cookie cookie : cookies) {
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parents: 88
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473 if (cookie.getName().equals(name))
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474 return cookie;
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475 }
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476 return null;
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parents: 88
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477 }
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478
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479 public static String getCookieValue(HttpServletRequest request,String name) {
8ef2d6701541 improve HttpLib
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480 Cookie cookie = getCookie(request,name);
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481 return cookie==null ? null : unescape(cookie.getValue());
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482 }
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483
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484 public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 88
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485 Cookie cookie = getCookie(request,name);
8ef2d6701541 improve HttpLib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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486 if( cookie==null || !cookie.getValue().equals(value) ) {
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487 cookie = new Cookie(name, escape(value));
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
488 cookie.setPath("/");
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 88
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489 if (domain != null && domain.length() > 0)
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 88
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490 cookie.setDomain(domain);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 88
diff changeset
491 if( isPersistent )
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492 cookie.setMaxAge(10000000);
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diff changeset
493 response.addCookie(cookie);
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494 }
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495 }
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496
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497 public static void removeCookie(HttpServletRequest request,
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498 HttpServletResponse response,
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diff changeset
499 String name,
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parents: 88
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500 String domain
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501 ) {
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parents: 88
diff changeset
502 Cookie cookie = getCookie(request, name);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 88
diff changeset
503 if(cookie != null) {
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parents: 88
diff changeset
504 Cookie delCookie = new Cookie(name, "delete");
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parents: 88
diff changeset
505 delCookie.setPath("/");
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parents: 88
diff changeset
506 delCookie.setMaxAge(0);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 88
diff changeset
507 if (domain != null && domain.length() > 0)
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parents: 88
diff changeset
508 delCookie.setDomain(domain);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 88
diff changeset
509 response.addCookie(delCookie);
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parents: 88
diff changeset
510 }
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diff changeset
511 }
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diff changeset
512
222
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
513
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
514
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diff changeset
515 // util classes
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diff changeset
516
413
8937263f59f6 add __pairs;
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517 static final class EnumerationIterator implements Iterator {
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518 private final Enumeration en;
222
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diff changeset
519
413
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diff changeset
520 EnumerationIterator(Enumeration en) {
222
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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diff changeset
521 this.en = en;
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parents: 221
diff changeset
522 }
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parents: 221
diff changeset
523
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
524 @Override public boolean hasNext() {
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parents: 221
diff changeset
525 return en.hasMoreElements();
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parents: 221
diff changeset
526 }
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parents: 221
diff changeset
527
413
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parents: 411
diff changeset
528 @Override public Object next() {
222
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parents: 221
diff changeset
529 return en.nextElement();
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parents: 221
diff changeset
530 }
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
531
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diff changeset
532 @Override public void remove() {
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
533 throw new UnsupportedOperationException();
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
534 }
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parents: 221
diff changeset
535 }
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
536
405
3e68917a0dc6 add LuanMeta
Franklin Schmidt <fschmidt@gmail.com>
parents: 377
diff changeset
537 private static abstract class NameMeta extends LuanMeta {
222
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
538 abstract Object get(String name);
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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diff changeset
539
405
3e68917a0dc6 add LuanMeta
Franklin Schmidt <fschmidt@gmail.com>
parents: 377
diff changeset
540 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) {
222
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
541 if( !(key instanceof String) )
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 221
diff changeset
542 return null;
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 221
diff changeset
543 String name = (String)key;
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 221
diff changeset
544 return get(name);
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
545 }
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parents: 221
diff changeset
546
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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parents: 221
diff changeset
547 };
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parents: 221
diff changeset
548
226
392105b660d7 add LuanProperty
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 225
diff changeset
549 private static String string(Object value) {
392105b660d7 add LuanProperty
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parents: 225
diff changeset
550 if( !(value instanceof String) )
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parents: 225
diff changeset
551 throw new IllegalArgumentException("value must be string");
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parents: 225
diff changeset
552 return (String)value;
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parents: 225
diff changeset
553 }
76
97b03fc807ad add HttpLib and WebServlet
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parents:
diff changeset
554 }