Mercurial Hosting > luan
annotate http/src/luan/modules/http/HttpServicer.java @ 495:598123096772
rename service() to respond()
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Fri, 15 May 2015 18:10:14 -0600 |
parents | 2b9bc97f0439 |
children | c65df5b25932 |
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494
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change luan:web to luan:http
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1 package luan.modules.http; |
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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; |
413 | 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; |
436 | 23 import org.slf4j.Logger; |
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; |
405 | 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 { |
436 | 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:http/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 respond = tbl.get(luan,"respond"); |
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99 if( respond == null ) |
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100 throw luan.exception( "function 'respond' is not defined" ); |
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101 if( !(respond instanceof LuanFunction) ) |
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102 throw luan.exception( "'respond' must be a function but is a " + Luan.type(respond) ); |
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103 return (LuanFunction)respond; |
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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 |
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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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122 |
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123 @Override Object get(String name) { |
413 | 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) { |
413 | 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 |
405 | 135 }.newTable(); |
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136 tbl.rawPut( "parameters", parameters ); |
413 | 137 add( tbl, "get_parameter_values", String.class ); |
405 | 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) { |
413 | 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 |
405 | 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 getters.rawPut( "protocol", new LuanJavaFunction( |
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173 HttpServletRequest.class.getMethod( "getProtocol" ), request |
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174 ) ); |
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175 getters.rawPut( "scheme", new LuanJavaFunction( |
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176 HttpServletRequest.class.getMethod( "getScheme" ), request |
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177 ) ); |
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178 getters.rawPut( "is_secure", new LuanJavaFunction( |
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179 HttpServletRequest.class.getMethod( "isSecure" ), request |
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180 ) ); |
405 | 181 LuanTable cookies = new LuanMeta() { |
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182 |
405 | 183 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) { |
225
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184 if( !(key instanceof String) ) |
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185 return null; |
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186 String name = (String)key; |
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187 return getCookieValue(request,name); |
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188 } |
413 | 189 |
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190 @Override protected Iterator<Object> keys(LuanTable tbl) { |
413 | 191 return new Iterator<Object>() { |
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192 final Cookie[] cookies = request.getCookies(); |
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193 int i = 0; |
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194 |
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195 @Override public boolean hasNext() { |
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196 return i < cookies.length; |
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197 } |
413 | 198 @Override public Object next() { |
199 return cookies[i++].getName(); | |
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200 } |
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201 @Override public void remove() { |
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202 throw new UnsupportedOperationException(); |
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203 } |
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204 }; |
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205 } |
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206 |
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207 @Override protected String type(LuanTable tbl) { |
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208 return "request.cookies"; |
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209 } |
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210 |
405 | 211 }.newTable(); |
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212 tbl.rawPut( "cookies", cookies ); |
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213 |
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214 String contentType = request.getContentType(); |
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215 if( contentType!=null && contentType.startsWith("multipart/form-data") ) { |
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216 try { |
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217 InputStream in = new BufferedInputStream(request.getInputStream()); |
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218 final MultiPartInputStream mpis = new MultiPartInputStream(in,contentType,null,null); |
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219 mpis.setDeleteOnExit(true); |
411
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220 parameters = new LuanTable(); |
413 | 221 final Map map = new HashMap(); |
361
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222 for( Part p : mpis.getParts() ) { |
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223 final MultiPartInputStream.MultiPart part = (MultiPartInputStream.MultiPart)p; |
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224 String name = part.getName(); |
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225 Object value; |
361
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226 String filename = part.getContentDispositionFilename(); |
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227 if( filename == null ) { |
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228 value = new String(part.getBytes()); |
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229 } else { |
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230 LuanTable partTbl = LuanPropertyMeta.INSTANCE.newTable(); |
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231 partTbl.rawPut("filename",filename); |
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232 partTbl.rawPut("content_type",part.getContentType()); |
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233 LuanPropertyMeta.INSTANCE.getters(partTbl).rawPut( "content", new LuanFunction() { |
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234 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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235 try { |
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236 InputStream in = part.getInputStream(); |
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237 byte[] content = Utils.readAll(in); |
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238 in.close(); |
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239 return content; |
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240 } catch(IOException e) { |
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241 throw new RuntimeException(e); |
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242 } |
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243 } |
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244 } ); |
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245 value = partTbl; |
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246 } |
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247 parameters.rawPut(name,value); |
413 | 248 Object old = map.get(name); |
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249 if( old == null ) { |
413 | 250 map.put(name,value); |
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251 } else if( old instanceof Object[] ) { |
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252 Object[] aOld = (Object[])old; |
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253 Object[] aNew = new Object[aOld.length+1]; |
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254 System.arraycopy(aOld,0,aNew,0,aOld.length); |
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255 aNew[aOld.length] = value; |
413 | 256 map.put(name,aNew); |
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257 } else { |
413 | 258 map.put(name,new Object[]{old,value}); |
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259 } |
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260 } |
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261 tbl.rawPut( "parameters", parameters ); |
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262 tbl.rawPut( "get_parameter_values", new LuanFunction() { |
413 | 263 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
264 return args.length==0 ? null : map.get(args[0]); | |
265 } | |
266 } ); | |
361
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267 } catch(IOException e) { |
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268 throw new RuntimeException(e); |
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269 } catch(ServletException e) { |
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270 throw new RuntimeException(e); |
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271 } |
361
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272 } |
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273 |
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274 return tbl; |
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275 } |
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276 |
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277 private LuanTable responseTable() throws NoSuchMethodException { |
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278 LuanTable tbl = LuanPropertyMeta.INSTANCE.newTable(); |
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279 LuanTable getters = LuanPropertyMeta.INSTANCE.getters(tbl); |
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280 LuanTable setters = LuanPropertyMeta.INSTANCE.setters(tbl); |
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281 tbl.rawPut("java",response); |
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282 tbl.rawPut( "send_redirect", new LuanJavaFunction( |
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283 HttpServletResponse.class.getMethod( "sendRedirect", String.class ), response |
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284 ) ); |
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285 tbl.rawPut( "send_error", new LuanJavaFunction( |
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286 HttpServletResponse.class.getMethod( "sendError", Integer.TYPE, String.class ), response |
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287 ) ); |
405 | 288 LuanTable headers = new NameMeta() { |
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289 |
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290 @Override Object get(String name) { |
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291 return response.getHeader(name); |
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292 } |
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293 |
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294 @Override protected Iterator keys(LuanTable tbl) { |
222
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295 return response.getHeaderNames().iterator(); |
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296 } |
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297 |
405 | 298 @Override public boolean canNewindex() { |
299 return true; | |
300 } | |
301 | |
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302 @Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object val) { |
223
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303 if( !(key instanceof String) ) |
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304 throw new IllegalArgumentException("key must be string for headers table"); |
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305 String name = (String)key; |
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306 if( val instanceof String ) { |
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307 response.setHeader(name,(String)val); |
224
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308 return; |
223
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309 } |
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310 Integer i = Luan.asInteger(val); |
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311 if( i != null ) { |
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312 response.setIntHeader(name,i); |
224
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313 return; |
223
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314 } |
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315 throw new IllegalArgumentException("value must be string or integer for headers table"); |
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316 } |
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317 |
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318 @Override protected String type(LuanTable tbl) { |
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319 return "response.headers"; |
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320 } |
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321 |
405 | 322 }.newTable(); |
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323 tbl.rawPut( "headers", headers ); |
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324 getters.rawPut( "content_type", new LuanJavaFunction( |
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325 HttpServletResponse.class.getMethod( "getContentType" ), response |
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326 ) ); |
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327 setters.rawPut( "content_type", new LuanJavaFunction( |
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328 HttpServletResponse.class.getMethod( "setContentType", String.class ), response |
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329 ) ); |
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330 getters.rawPut( "character_encoding", new LuanJavaFunction( |
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331 HttpServletResponse.class.getMethod( "getCharacterEncoding" ), response |
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332 ) ); |
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333 setters.rawPut( "character_encoding", new LuanJavaFunction( |
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334 HttpServletResponse.class.getMethod( "setCharacterEncoding", String.class ), response |
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335 ) ); |
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336 add( tbl, "text_writer" ); |
225
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337 add( tbl, "set_cookie", String.class, String.class, Boolean.TYPE, String.class ); |
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338 add( tbl, "remove_cookie", String.class, String.class ); |
436 | 339 try { |
340 getters.rawPut( "status", new LuanJavaFunction( | |
341 HttpServletResponse.class.getMethod( "getStatus" ), response | |
342 ) ); | |
343 } catch(NoSuchMethodException e) { | |
344 logger.info("please upgrade jetty"); | |
345 } | |
427
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346 setters.rawPut( "status", new LuanJavaFunction( |
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347 HttpServletResponse.class.getMethod( "setStatus", Integer.TYPE ), response |
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348 ) ); |
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349 return tbl; |
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350 } |
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351 |
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352 private LuanTable sessionTable() throws NoSuchMethodException { |
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353 LuanTable tbl = new LuanTable(); |
405 | 354 LuanTable attributes = new NameMeta() { |
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355 |
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356 @Override Object get(String name) { |
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357 return request.getSession().getAttribute(name); |
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358 } |
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359 |
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360 @Override protected Iterator keys(LuanTable tbl) { |
413 | 361 return new EnumerationIterator(request.getSession().getAttributeNames()); |
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362 } |
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363 |
405 | 364 @Override public boolean canNewindex() { |
365 return true; | |
366 } | |
367 | |
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368 @Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object val) { |
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369 if( !(key instanceof String) ) |
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370 throw new IllegalArgumentException("key must be string for session attributes table"); |
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371 String name = (String)key; |
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372 request.getSession().setAttribute(name,val); |
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373 } |
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374 |
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375 @Override protected String type(LuanTable tbl) { |
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376 return "session.attributes"; |
222
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377 } |
416
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378 |
405 | 379 }.newTable(); |
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380 tbl.rawPut( "attributes", attributes ); |
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381 return tbl; |
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382 } |
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383 |
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384 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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385 t.rawPut( method, new LuanJavaFunction(HttpServicer.class.getMethod(method,parameterTypes),this) ); |
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386 } |
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387 /* |
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388 public void text_write(LuanState luan,Object... args) throws LuanException, IOException { |
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389 if( writer == null ) |
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390 writer = response.getWriter(); |
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391 for( Object obj : args ) { |
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392 writer.print( luan.toString(obj) ); |
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393 } |
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394 } |
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395 */ |
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396 public LuanTable text_writer() throws IOException { |
168
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397 return IoLuan.textWriter(response.getWriter()); |
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398 } |
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399 |
413 | 400 public Object[] get_parameter_values(String name) { |
401 return request.getParameterValues(name); | |
402 } | |
403 | |
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404 public void set_cookie(String name,String value,boolean isPersistent, String domain) { |
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405 setCookie(request,response,name,value,isPersistent,domain); |
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406 } |
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407 |
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408 public void remove_cookie(String name, String domain) { |
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409 removeCookie(request,response,name,domain); |
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410 } |
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411 |
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412 |
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413 // static utils |
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414 |
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415 public String getQueryString() { |
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416 return getQueryString(request); |
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417 } |
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418 |
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419 public static String getQueryString(HttpServletRequest request) { |
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420 return getQueryString(request,0); |
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421 } |
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422 |
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423 public static String getQueryString(HttpServletRequest request,int maxValueLen) { |
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424 String method = request.getMethod(); |
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425 if( method.equals("GET") ) |
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426 return request.getQueryString(); |
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427 if( !method.equals("POST") && !method.equals("HEAD") ) |
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428 throw new RuntimeException(method); |
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429 Enumeration en = request.getParameterNames(); |
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430 StringBuilder queryBuf = new StringBuilder(); |
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431 if( !en.hasMoreElements() ) |
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432 return null; |
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433 do { |
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434 String param = (String)en.nextElement(); |
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435 String value = request.getParameter(param); |
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436 if( maxValueLen > 0 ) { |
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437 int len = value.length(); |
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438 if( len > maxValueLen ) |
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439 value = value.substring(0,maxValueLen) + "..." + (len-maxValueLen); |
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440 } |
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441 queryBuf.append(param); |
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442 queryBuf.append('='); |
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443 queryBuf.append(value); |
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444 queryBuf.append('&'); |
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445 } while( en.hasMoreElements() ); |
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446 queryBuf.deleteCharAt(queryBuf.length() - 1); |
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447 return queryBuf.toString(); |
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448 } |
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449 |
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450 public String getURL() { |
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451 return getURL(request); |
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452 } |
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453 |
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454 public static String getURL(HttpServletRequest request) { |
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455 return getURL(request,0); |
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456 } |
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457 |
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458 public static String getURL(HttpServletRequest request,int maxValueLen) { |
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459 // StringBuffer buf = HttpUtils.getRequestURL(request); |
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460 StringBuffer buf = request.getRequestURL(); |
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461 String qStr = getQueryString(request,maxValueLen); |
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462 if(qStr != null && qStr.length() > 0) { |
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463 buf.append('?'); |
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464 buf.append(qStr); |
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465 } |
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466 return buf.toString(); |
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467 } |
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468 |
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469 private static String escape(String value) { |
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470 return value.replaceAll(";", "%3B"); |
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471 } |
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472 |
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473 private static String unescape(String value) { |
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474 return value.replaceAll("%3B", ";"); |
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475 } |
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476 |
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477 private static Cookie getCookie(HttpServletRequest request,String name) { |
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478 Cookie[] cookies = request.getCookies(); |
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479 if( cookies == null ) |
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480 return null; |
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481 for (Cookie cookie : cookies) { |
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482 if (cookie.getName().equals(name)) |
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483 return cookie; |
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484 } |
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485 return null; |
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486 } |
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487 |
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488 public static String getCookieValue(HttpServletRequest request,String name) { |
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489 Cookie cookie = getCookie(request,name); |
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490 return cookie==null ? null : unescape(cookie.getValue()); |
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491 } |
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492 |
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493 public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) { |
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494 Cookie cookie = getCookie(request,name); |
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495 if( cookie==null || !cookie.getValue().equals(value) ) { |
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496 cookie = new Cookie(name, escape(value)); |
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497 cookie.setPath("/"); |
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498 if (domain != null && domain.length() > 0) |
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499 cookie.setDomain(domain); |
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500 if( isPersistent ) |
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501 cookie.setMaxAge(10000000); |
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502 response.addCookie(cookie); |
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503 } |
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504 } |
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505 |
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506 public static void removeCookie(HttpServletRequest request, |
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507 HttpServletResponse response, |
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508 String name, |
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509 String domain |
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510 ) { |
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511 Cookie cookie = getCookie(request, name); |
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512 if(cookie != null) { |
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513 Cookie delCookie = new Cookie(name, "delete"); |
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514 delCookie.setPath("/"); |
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515 delCookie.setMaxAge(0); |
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516 if (domain != null && domain.length() > 0) |
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517 delCookie.setDomain(domain); |
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518 response.addCookie(delCookie); |
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519 } |
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520 } |
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521 |
222
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522 |
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523 |
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524 // util classes |
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525 |
413 | 526 static final class EnumerationIterator implements Iterator { |
527 private final Enumeration en; | |
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528 |
413 | 529 EnumerationIterator(Enumeration en) { |
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530 this.en = en; |
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531 } |
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532 |
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533 @Override public boolean hasNext() { |
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534 return en.hasMoreElements(); |
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535 } |
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536 |
413 | 537 @Override public Object next() { |
222
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538 return en.nextElement(); |
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539 } |
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540 |
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541 @Override public void remove() { |
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542 throw new UnsupportedOperationException(); |
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543 } |
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544 } |
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545 |
405 | 546 private static abstract class NameMeta extends LuanMeta { |
222
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547 abstract Object get(String name); |
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548 |
405 | 549 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) { |
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550 if( !(key instanceof String) ) |
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551 return null; |
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552 String name = (String)key; |
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553 return get(name); |
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554 } |
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555 |
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556 }; |
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557 |
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558 private static String string(Object value) { |
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559 if( !(value instanceof String) ) |
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560 throw new IllegalArgumentException("value must be string"); |
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561 return (String)value; |
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562 } |
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563 } |