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annotate org.eclipse.osgi/supplement/src/org/osgi/util/NLS.d @ 71:a7064d39311b

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Fix, thanks yidabu for the report.
author Frank Benoit <benoit@tionex.de>
date Thu, 09 Apr 2009 06:20:23 +0200
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1 /*******************************************************************************
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2 * Copyright (c) 2005, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM - Initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
71
a7064d39311b Fix, thanks yidabu for the report.
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13 module org.osgi.util.NLS;
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14
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15 import java.lang.all;
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16
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17 // import java.io.IOException;
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18 // import java.io.InputStream;
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19 // import java.lang.reflect.Field;
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20 // import java.lang.reflect.Modifier;
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21 // import java.security.AccessController;
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22 // import java.security.PrivilegedAction;
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23 // import java.util.ArrayList;
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24 // import java.util.HashMap;
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25 // import java.util.Locale;
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26 // import java.util.Map;
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27 // import java.util.Properties;
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28 //
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29 // import org.eclipse.osgi.framework.debug.Debug;
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30 // import org.eclipse.osgi.framework.log.FrameworkLog;
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31 // import org.eclipse.osgi.framework.log.FrameworkLogEntry;
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32
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33 /**
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34 * Common superclass for all message bundle classes. Provides convenience
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35 * methods for manipulating messages.
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36 * <p>
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37 * The <code>#bind</code> methods perform string substitution and should be considered a
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38 * convenience and <em>not</em> a full substitute replacement for <code>MessageFormat#format</code>
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39 * method calls.
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40 * </p>
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41 * <p>
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42 * Text appearing within curly braces in the given message, will be interpreted
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43 * as a numeric index to the corresponding substitution object in the given array. Calling
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44 * the <code>#bind</code> methods with text that does not map to an integer will result in an
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45 * {@link IllegalArgumentException}.
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46 * </p>
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47 * <p>
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48 * Text appearing within single quotes is treated as a literal. A single quote is escaped by
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49 * a preceeding single quote.
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50 * </p>
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51 * <p>
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52 * Clients who wish to use the full substitution power of the <code>MessageFormat</code> class should
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53 * call that class directly and not use these <code>#bind</code> methods.
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54 * </p>
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55 * <p>
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56 * Clients may subclass this type.
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57 * </p>
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58 *
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59 * @since 3.1
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60 */
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61 public abstract class NLS {
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62
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63 // private static final Object[] EMPTY_ARGS = new Object[0];
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64 // private static final String EXTENSION = ".properties"; //$NON-NLS-1$
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65 // private static String[] nlSuffixes;
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66 // /*
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67 // * NOTE do not change the name of this field; it is set by the Framework using reflection
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68 // */
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69 // private static FrameworkLog frameworkLog;
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70 //
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71 // static final int SEVERITY_ERROR = 0x04;
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72 // static final int SEVERITY_WARNING = 0x02;
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73 // /*
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74 // * This object is assigned to the value of a field map to indicate
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75 // * that a translated message has already been assigned to that field.
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76 // */
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77 // static final Object ASSIGNED = new Object();
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78 //
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79 // /**
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80 // * Creates a new NLS instance.
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81 // */
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82 // protected NLS() {
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83 // super();
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84 // }
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85
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86 /**
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87 * Bind the given message's substitution locations with the given string value.
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88 *
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89 * @param message the message to be manipulated
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90 * @param binding the object to be inserted into the message
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91 * @return the manipulated String
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92 * @throws IllegalArgumentException if the text appearing within curly braces in the given message does not map to an integer
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93 */
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94 public static String bind(String message, Object binding) {
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95 implMissing( __FILE__, __LINE__ );
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96 return null;
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97 // return internalBind(message, null, String.valueOf(binding), null);
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98 }
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99 public static String bind(String message, String binding) {
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100 implMissing( __FILE__, __LINE__ );
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101 return null;
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102 // return internalBind(message, null, String.valueOf(binding), null);
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103 }
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104
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105 /**
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106 * Bind the given message's substitution locations with the given string values.
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107 *
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108 * @param message the message to be manipulated
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109 * @param binding1 An object to be inserted into the message
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110 * @param binding2 A second object to be inserted into the message
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111 * @return the manipulated String
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112 * @throws IllegalArgumentException if the text appearing within curly braces in the given message does not map to an integer
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113 */
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114 public static String bind(String message, Object binding1, Object binding2) {
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115 implMissing( __FILE__, __LINE__ );
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116 return null;
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117 // return internalBind(message, null, String.valueOf(binding1), String.valueOf(binding2));
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118 }
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119 public static String bind(String message, String binding1, String binding2) {
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120 implMissing( __FILE__, __LINE__ );
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121 return null;
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122 // return internalBind(message, null, String.valueOf(binding1), String.valueOf(binding2));
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123 }
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124
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125 /**
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126 * Bind the given message's substitution locations with the given string values.
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127 *
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128 * @param message the message to be manipulated
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129 * @param bindings An array of objects to be inserted into the message
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130 * @return the manipulated String
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131 * @throws IllegalArgumentException if the text appearing within curly braces in the given message does not map to an integer
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132 */
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133 public static String bind(String message, Object[] bindings) {
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134 implMissing( __FILE__, __LINE__ );
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135 return null;
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136 // return internalBind(message, bindings, null, null);
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137 }
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138 public static String bind(String message, String[] bindings) {
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139 implMissing( __FILE__, __LINE__ );
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140 return null;
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141 // return internalBind(message, bindings, null, null);
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142 }
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143
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144 // /**
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145 // * Initialize the given class with the values from the specified message bundle.
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146 // *
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147 // * @param bundleName fully qualified path of the class name
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148 // * @param clazz the class where the constants will exist
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149 // */
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150 // public static void initializeMessages(final String bundleName, final Class clazz) {
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151 // if (System.getSecurityManager() is null) {
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152 // load(bundleName, clazz);
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153 // return;
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154 // }
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155 // AccessController.doPrivileged(new PrivilegedAction() {
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156 // public Object run() {
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157 // load(bundleName, clazz);
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158 // return null;
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159 // }
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160 // });
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161 // }
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162 //
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163 // /*
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164 // * Perform the string substitution on the given message with the specified args.
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165 // * See the class comment for exact details.
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166 // */
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167 // private static String internalBind(String message, Object[] args, String argZero, String argOne) {
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168 // if (message is null)
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169 // return "No message available."; //$NON-NLS-1$
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170 // if (args is null || args.length is 0)
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171 // args = EMPTY_ARGS;
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172 //
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173 // int length = message.length();
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174 // //estimate correct size of string buffer to avoid growth
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175 // int bufLen = length + (args.length * 5);
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176 // if (argZero !is null)
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177 // bufLen += argZero.length() - 3;
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178 // if (argOne !is null)
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179 // bufLen += argOne.length() - 3;
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180 // StringBuffer buffer = new StringBuffer(bufLen < 0 ? 0 : bufLen);
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181 // for (int i = 0; i < length; i++) {
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182 // char c = message.charAt(i);
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183 // switch (c) {
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184 // case '{' :
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185 // int index = message.indexOf('}', i);
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186 // // if we don't have a matching closing brace then...
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187 // if (index is -1) {
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188 // buffer.append(c);
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189 // break;
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190 // }
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191 // i++;
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192 // if (i >= length) {
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193 // buffer.append(c);
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194 // break;
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195 // }
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196 // // look for a substitution
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197 // int number = -1;
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198 // try {
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199 // number = Integer.parseInt(message.substring(i, index));
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200 // } catch (NumberFormatException e) {
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201 // throw new IllegalArgumentException();
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202 // }
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203 // if (number is 0 && argZero !is null)
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204 // buffer.append(argZero);
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205 // else if (number is 1 && argOne !is null)
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206 // buffer.append(argOne);
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207 // else {
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208 // if (number >= args.length || number < 0) {
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209 // buffer.append("<missing argument>"); //$NON-NLS-1$
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210 // i = index;
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211 // break;
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212 // }
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213 // buffer.append(args[number]);
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214 // }
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215 // i = index;
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216 // break;
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217 // case '\'' :
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218 // // if a single quote is the last char on the line then skip it
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219 // int nextIndex = i + 1;
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220 // if (nextIndex >= length) {
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221 // buffer.append(c);
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222 // break;
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223 // }
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224 // char next = message.charAt(nextIndex);
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225 // // if the next char is another single quote then write out one
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226 // if (next is '\'') {
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227 // i++;
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228 // buffer.append(c);
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229 // break;
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230 // }
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231 // // otherwise we want to read until we get to the next single quote
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232 // index = message.indexOf('\'', nextIndex);
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233 // // if there are no more in the string, then skip it
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234 // if (index is -1) {
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235 // buffer.append(c);
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236 // break;
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237 // }
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238 // // otherwise write out the chars inside the quotes
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239 // buffer.append(message.substring(nextIndex, index));
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240 // i = index;
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241 // break;
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242 // default :
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243 // buffer.append(c);
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244 // }
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245 // }
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246 // return buffer.toString();
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247 // }
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248 //
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249 // /*
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250 // * Build an array of property files to search. The returned array contains
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251 // * the property fields in order from most specific to most generic.
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252 // * So, in the FR_fr locale, it will return file_fr_FR.properties, then
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253 // * file_fr.properties, and finally file.properties.
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254 // */
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255 // private static String[] buildVariants(String root) {
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256 // if (nlSuffixes is null) {
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257 // //build list of suffixes for loading resource bundles
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258 // String nl = Locale.getDefault().toString();
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259 // ArrayList result = new ArrayList(4);
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260 // int lastSeparator;
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261 // while (true) {
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262 // result.add('_' + nl + EXTENSION);
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263 // lastSeparator = nl.lastIndexOf('_');
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264 // if (lastSeparator is -1)
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265 // break;
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266 // nl = nl.substring(0, lastSeparator);
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267 // }
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268 // //add the empty suffix last (most general)
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269 // result.add(EXTENSION);
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270 // nlSuffixes = (String[]) result.toArray(new String[result.size()]);
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271 // }
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272 // root = root.replace('.', '/');
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273 // String[] variants = new String[nlSuffixes.length];
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274 // for (int i = 0; i < variants.length; i++)
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275 // variants[i] = root + nlSuffixes[i];
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276 // return variants;
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277 // }
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278 //
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279 // private static void computeMissingMessages(String bundleName, Class clazz, Map fieldMap, Field[] fieldArray, bool isAccessible) {
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280 // // iterate over the fields in the class to make sure that there aren't any empty ones
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281 // final int MOD_EXPECTED = Modifier.PUBLIC | Modifier.STATIC;
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282 // final int MOD_MASK = MOD_EXPECTED | Modifier.FINAL;
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283 // final int numFields = fieldArray.length;
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284 // for (int i = 0; i < numFields; i++) {
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285 // Field field = fieldArray[i];
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286 // if ((field.getModifiers() & MOD_MASK) !is MOD_EXPECTED)
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287 // continue;
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288 // //if the field has a a value assigned, there is nothing to do
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289 // if (fieldMap.get(field.getName()) is ASSIGNED)
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290 // continue;
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diff changeset
291 // try {
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292 // // Set a value for this empty field. We should never get an exception here because
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293 // // we know we have a public static non-final field. If we do get an exception, silently
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294 // // log it and continue. This means that the field will (most likely) be un-initialized and
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295 // // will fail later in the code and if so then we will see both the NPE and this error.
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296 // String value = "NLS missing message: " + field.getName() + " in: " + bundleName; //$NON-NLS-1$ //$NON-NLS-2$
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297 // if (Debug.DEBUG_MESSAGE_BUNDLES)
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298 // System.out.println(value);
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299 // log(SEVERITY_WARNING, value, null);
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300 // if (!isAccessible)
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301 // field.setAccessible(true);
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302 // field.set(null, value);
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303 // } catch (Exception e) {
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304 // log(SEVERITY_ERROR, "Error setting the missing message value for: " + field.getName(), e); //$NON-NLS-1$
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305 // }
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306 // }
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307 // }
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308 //
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309 // /*
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310 // * Load the given resource bundle using the specified class loader.
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311 // */
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312 // static void load(final String bundleName, Class clazz) {
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313 // long start = System.currentTimeMillis();
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314 // final Field[] fieldArray = clazz.getDeclaredFields();
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315 // ClassLoader loader = clazz.getClassLoader();
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316 //
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317 // bool isAccessible = (clazz.getModifiers() & Modifier.PUBLIC) !is 0;
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318 //
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319 // //build a map of field names to Field objects
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320 // final int len = fieldArray.length;
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321 // Map fields = new HashMap(len * 2);
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322 // for (int i = 0; i < len; i++)
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323 // fields.put(fieldArray[i].getName(), fieldArray[i]);
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324 //
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325 // // search the variants from most specific to most general, since
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326 // // the MessagesProperties.put method will mark assigned fields
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327 // // to prevent them from being assigned twice
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328 // final String[] variants = buildVariants(bundleName);
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329 // for (int i = 0; i < variants.length; i++) {
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330 // // loader is null if we're launched off the Java boot classpath
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331 // final InputStream input = loader is null ? ClassLoader.getSystemResourceAsStream(variants[i]) : loader.getResourceAsStream(variants[i]);
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332 // if (input is null)
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333 // continue;
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334 // try {
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335 // final MessagesProperties properties = new MessagesProperties(fields, bundleName, isAccessible);
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336 // properties.load(input);
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337 // } catch (IOException e) {
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338 // log(SEVERITY_ERROR, "Error loading " + variants[i], e); //$NON-NLS-1$
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339 // } finally {
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340 // if (input !is null)
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341 // try {
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342 // input.close();
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343 // } catch (IOException e) {
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344 // // ignore
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345 // }
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346 // }
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347 // }
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348 // computeMissingMessages(bundleName, clazz, fields, fieldArray, isAccessible);
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349 // if (Debug.DEBUG_MESSAGE_BUNDLES)
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350 // System.out.println("Time to load message bundle: " + bundleName + " was " + (System.currentTimeMillis() - start) + "ms."); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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351 // }
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352 //
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353 // /*
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354 // * The method adds a log entry based on the error message and exception.
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355 // * The output is written to the System.err.
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356 // *
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357 // * This method is only expected to be called if there is a problem in
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358 // * the NLS mechanism. As a result, translation facility is not available
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diff changeset
359 // * here and messages coming out of this log are generally not translated.
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360 // *
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361 // * @param severity - severity of the message (SEVERITY_ERROR or SEVERITY_WARNING)
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362 // * @param message - message to log
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363 // * @param e - exception to log
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364 // */
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365 // static void log(int severity, String message, Exception e) {
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366 // if (frameworkLog !is null) {
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367 // frameworkLog.log(new FrameworkLogEntry("org.eclipse.osgi", severity, 1, message, 0, e, null)); //$NON-NLS-1$
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368 // return;
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369 // }
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370 // String statusMsg;
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371 // switch (severity) {
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372 // case SEVERITY_ERROR :
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373 // statusMsg = "Error: "; //$NON-NLS-1$
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374 // break;
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375 // case SEVERITY_WARNING :
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376 // // intentionally fall through:
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377 // default :
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378 // statusMsg = "Warning: "; //$NON-NLS-1$
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379 // }
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380 // if (message !is null)
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381 // statusMsg += message;
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382 // if (e !is null)
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383 // statusMsg += ": " + e.getMessage(); //$NON-NLS-1$
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diff changeset
384 // System.err.println(statusMsg);
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385 // if (e !is null)
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386 // e.printStackTrace();
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387 // }
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388 //
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389 // /*
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390 // * Class which sub-classes java.util.Properties and uses the #put method
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391 // * to set field values rather than storing the values in the table.
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392 // */
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393 // private static class MessagesProperties extends Properties {
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394 //
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395 // private static final int MOD_EXPECTED = Modifier.PUBLIC | Modifier.STATIC;
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396 // private static final int MOD_MASK = MOD_EXPECTED | Modifier.FINAL;
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397 // private static final long serialVersionUID = 1L;
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398 //
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399 // private final String bundleName;
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400 // private final Map fields;
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401 // private final bool isAccessible;
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402 //
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diff changeset
403 // public MessagesProperties(Map fieldMap, String bundleName, bool isAccessible) {
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diff changeset
404 // super();
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diff changeset
405 // this.fields = fieldMap;
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diff changeset
406 // this.bundleName = bundleName;
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407 // this.isAccessible = isAccessible;
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408 // }
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409 //
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410 // /* (non-Javadoc)
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411 // * @see java.util.Hashtable#put(java.lang.Object, java.lang.Object)
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412 // */
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parents:
diff changeset
413 // public synchronized Object put(Object key, Object value) {
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414 // Object fieldObject = fields.put(key, ASSIGNED);
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415 // // if already assigned, there is nothing to do
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diff changeset
416 // if (fieldObject is ASSIGNED)
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diff changeset
417 // return null;
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parents:
diff changeset
418 // if (fieldObject is null) {
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419 // final String msg = "NLS unused message: " + key + " in: " + bundleName;//$NON-NLS-1$ //$NON-NLS-2$
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diff changeset
420 // if (Debug.DEBUG_MESSAGE_BUNDLES)
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diff changeset
421 // System.out.println(msg);
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diff changeset
422 // log(SEVERITY_WARNING, msg, null);
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423 // return null;
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424 // }
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425 // final Field field = (Field) fieldObject;
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426 // //can only set value of public static non-final fields
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427 // if ((field.getModifiers() & MOD_MASK) !is MOD_EXPECTED)
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428 // return null;
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429 // try {
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430 // // Check to see if we are allowed to modify the field. If we aren't (for instance
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431 // // if the class is not public) then change the accessible attribute of the field
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432 // // before trying to set the value.
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433 // if (!isAccessible)
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434 // field.setAccessible(true);
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435 // // Set the value into the field. We should never get an exception here because
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436 // // we know we have a public static non-final field. If we do get an exception, silently
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437 // // log it and continue. This means that the field will (most likely) be un-initialized and
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438 // // will fail later in the code and if so then we will see both the NPE and this error.
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439 // field.set(null, value);
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440 // } catch (Exception e) {
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441 // log(SEVERITY_ERROR, "Exception setting field value.", e); //$NON-NLS-1$
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442 // }
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443 // return null;
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444 // }
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445 // }
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446 }