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annotate dwt/internal/Compatibility.d @ 318:f7a1b148cb35

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Fix the languag file support.
author Frank Benoit <benoit@tionex.de>
date Sun, 19 Oct 2008 02:47:56 +0200
parents 8c656d6b7300
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 IBM Corporation and others.
2
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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 Corporation - 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 *******************************************************************************/
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13 module dwt.internal.Compatibility;
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14
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15 /+
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16 import java.io.*;
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17 import java.io.File;
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18 import java.text.MessageFormat;
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19 import java.util.MissingResourceException;
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20 import java.util.ResourceBundle;
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21 import java.util.zip.DeflaterOutputStream;
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22 import java.util.zip.InflaterInputStream;
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23 +/
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24
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25 import dwt.DWT;
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26 public import dwt.dwthelper.FileInputStream;
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27 public import dwt.dwthelper.FileOutputStream;
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28 public import dwt.dwthelper.InflaterInputStream;
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29
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30 import Math = tango.math.Math;
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31 import Unicode = tango.text.Unicode;
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32 import tango.sys.Process;
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33 import dwt.dwthelper.utils;
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34 import dwt.dwthelper.ResourceBundle;
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35 import tango.io.Path;
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36 import tango.text.convert.Format;
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38 /**
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39 * This class is a placeholder for utility methods commonly
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40 * used on J2SE platforms but not supported on some J2ME
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41 * profiles.
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42 * <p>
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43 * It is part of our effort to provide support for both J2SE
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44 * and J2ME platforms.
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45 * </p>
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46 * <p>
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47 * IMPORTANT: some of the methods have been modified from their
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48 * J2SE parents. Refer to the description of each method for
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49 * specific changes.
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50 * </p>
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51 * <ul>
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52 * <li>Exceptions thrown may differ since J2ME's set of
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53 * exceptions is a subset of J2SE's one.
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54 * </li>
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55 * <li>The range of the mathematic functions is subject to
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56 * change.
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57 * </li>
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58 * </ul>
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59 */
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60 public final class Compatibility {
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61
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62 /**
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63 * Returns the PI constant as a double.
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64 */
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65 public static const real PI = Math.PI;
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66
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67 static const real toRadians = PI / 180;
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68
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69 /**
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70 * Answers the length of the side adjacent to the given angle
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71 * of a right triangle. In other words, it returns the integer
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72 * conversion of length * cos (angle).
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73 * <p>
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74 * IMPORTANT: the j2me version has an additional restriction on
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75 * the argument. length must be between -32767 and 32767 (inclusive).
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76 * </p>
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77 *
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78 * @param angle the angle in degrees
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79 * @param length the length of the triangle's hypotenuse
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80 * @return the integer conversion of length * cos (angle)
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81 */
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82 public static int cos(int angle, int length) {
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83 return cast(int)(Math.cos(angle * toRadians) * length);
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84 }
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85
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86 /**
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87 * Answers the length of the side opposite to the given angle
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88 * of a right triangle. In other words, it returns the integer
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89 * conversion of length * sin (angle).
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90 * <p>
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91 * IMPORTANT: the j2me version has an additional restriction on
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92 * the argument. length must be between -32767 and 32767 (inclusive).
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93 * </p>
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94 *
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95 * @param angle the angle in degrees
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96 * @param length the length of the triangle's hypotenuse
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97 * @return the integer conversion of length * sin (angle)
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98 */
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99 public static int sin(int angle, int length) {
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100 return cast(int)(Math.sin(angle * toRadians) * length);
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101 }
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102
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103 /**
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104 * Answers the most negative (i.e. closest to negative infinity)
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105 * integer value which is greater than the number obtained by dividing
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106 * the first argument p by the second argument q.
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107 *
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108 * @param p numerator
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109 * @param q denominator (must be different from zero)
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110 * @return the ceiling of the rational number p / q.
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111 */
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112 public static int ceil(int p, int q) {
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113 return cast(int)Math.ceil(cast(float)p / q);
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114 }
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115
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116 /**
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117 * Answers whether the indicated file exists or not.
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118 *
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119 * @param parent the file's parent directory
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120 * @param child the file's name
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121 * @return true if the file exists
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122 */
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123 public static bool fileExists(String parent, String child) {
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124 return FS.exists( FS.join(parent, child));
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125 }
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126
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127 /**
2
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128 * Answers the most positive (i.e. closest to positive infinity)
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129 * integer value which is less than the number obtained by dividing
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130 * the first argument p by the second argument q.
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131 *
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132 * @param p numerator
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133 * @param q denominator (must be different from zero)
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134 * @return the floor of the rational number p / q.
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135 */
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136 public static int floor(int p, int q) {
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137 return cast(int)Math.floor(cast(double)p / q);
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138 }
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139
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140 /**
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141 * Answers the result of rounding to the closest integer the number obtained
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142 * by dividing the first argument p by the second argument q.
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143 * <p>
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144 * IMPORTANT: the j2me version has an additional restriction on
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145 * the arguments. p must be within the range 0 - 32767 (inclusive).
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146 * q must be within the range 1 - 32767 (inclusive).
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147 * </p>
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148 *
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149 * @param p numerator
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150 * @param q denominator (must be different from zero)
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151 * @return the closest integer to the rational number p / q
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152 */
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153 public static int round(int p, int q) {
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154 return cast(int)Math.round(cast(float)p / q);
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155 }
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156
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157 /**
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158 * Returns 2 raised to the power of the argument.
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159 *
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160 * @param n an int value between 0 and 30 (inclusive)
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161 * @return 2 raised to the power of the argument
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162 *
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163 * @exception IllegalArgumentException <ul>
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164 * <li>ERROR_INVALID_RANGE - if the argument is not between 0 and 30 (inclusive)</li>
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165 * </ul>
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166 */
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167 public static int pow2(int n) {
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168 if (n >= 1 && n <= 30)
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169 return 2 << (n - 1);
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170 else if (n != 0) {
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171 DWT.error(DWT.ERROR_INVALID_RANGE);
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172 }
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173 return 1;
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174 }
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175
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176 /**
213
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177 * Create an DeflaterOutputStream if such things are supported.
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178 *
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179 * @param stream the output stream
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180 * @return a deflater stream or <code>null</code>
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181 * @exception IOException
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182 *
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183 * @since 3.4
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184 */
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185 public static OutputStream newDeflaterOutputStream(OutputStream stream) {
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186 //DWT_TODO
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187 implMissing(__FILE__,__LINE__);
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188 return null;
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189 //return new DeflaterOutputStream(stream);
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190 }
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191
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192 /**
2
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193 * Open a file if such things are supported.
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194 *
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195 * @param filename the name of the file to open
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196 * @return a stream on the file if it could be opened.
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197 * @exception IOException
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198 */
212
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199 public static InputStream newFileInputStream(String filename) {
2
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200 return new FileInputStream(filename);
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201 }
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202
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203 /**
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204 * Open a file if such things are supported.
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205 *
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206 * @param filename the name of the file to open
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207 * @return a stream on the file if it could be opened.
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208 * @exception IOException
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209 */
212
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210 public static OutputStream newFileOutputStream(String filename) {
2
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211 return new FileOutputStream(filename);
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212 }
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213
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214 /**
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215 * Create an InflaterInputStream if such things are supported.
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216 *
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217 * @param stream the input stream
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218 * @return a inflater stream or <code>null</code>
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219 * @exception IOException
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220 *
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221 * @since 3.3
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222 */
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223 public static InflaterInputStream newInflaterInputStream(InputStream stream) {
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224 return new InflaterInputStream(stream);
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225 }
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226
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227 /**
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228 * Answers whether the character is a letter.
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229 *
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230 * @param c the character
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231 * @return true when the character is a letter
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232 */
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233 public static bool isLetter(dchar c) {
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234 return Unicode.isLetter(c);
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235 }
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236
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237 /**
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238 * Answers whether the character is a letter or a digit.
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239 *
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240 * @param c the character
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241 * @return true when the character is a letter or a digit
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242 */
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243 public static bool isLetterOrDigit(dchar c) {
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244 return Unicode.isLetterOrDigit(c);
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245 }
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246
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247 /**
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248 * Answers whether the character is a Unicode space character.
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249 *
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250 * @param c the character
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251 * @return true when the character is a Unicode space character
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252 */
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253 public static bool isSpaceChar(dchar c) {
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254 return Unicode.isSpace(c);
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255 }
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256
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257 /**
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258 * Answers whether the character is a whitespace character.
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259 *
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260 * @param c the character to test
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261 * @return true if the character is whitespace
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262 */
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263 public static bool isWhitespace(dchar c) {
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264 return Unicode.isWhitespace(c);
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265 }
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266
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267 /**
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268 * Execute a program in a separate platform process if the
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269 * underlying platform support this.
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270 * <p>
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271 * The new process inherits the environment of the caller.
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272 * </p>
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273 *
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274 * @param prog the name of the program to execute
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275 *
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276 * @exception ProcessException
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277 * if the program cannot be executed
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278 */
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279 public static void exec(String prog) {
2
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280 auto proc = new Process( prog );
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281 proc.execute;
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282 }
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283
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284 /**
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285 * Execute progArray[0] in a separate platform process if the
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286 * underlying platform support this.
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287 * <p>
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288 * The new process inherits the environment of the caller.
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289 * <p>
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290 *
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291 * @param progArray array containing the program to execute and its arguments
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292 *
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293 * @exception ProcessException
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294 * if the program cannot be executed
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295 */
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296 public static void exec(String[] progArray) {
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297 auto proc = new Process( progArray );
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298 proc.execute;
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299 }
317
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300
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301 const ImportData[] SWTMessagesBundleData = [
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302 getImportData!( "swt.internal.SWTMessages.properties" ),
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303 getImportData!( "swt.internal.SWTMessages_ar.properties" ),
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304 getImportData!( "swt.internal.SWTMessages_cs.properties" ),
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305 getImportData!( "swt.internal.SWTMessages_da.properties" ),
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306 getImportData!( "swt.internal.SWTMessages_de.properties" ),
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307 getImportData!( "swt.internal.SWTMessages_el.properties" ),
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308 getImportData!( "swt.internal.SWTMessages_es.properties" ),
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309 getImportData!( "swt.internal.SWTMessages_fi.properties" ),
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310 getImportData!( "swt.internal.SWTMessages_fr.properties" ),
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311 getImportData!( "swt.internal.SWTMessages_hu.properties" ),
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312 getImportData!( "swt.internal.SWTMessages_it.properties" ),
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313 getImportData!( "swt.internal.SWTMessages_iw.properties" ),
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314 getImportData!( "swt.internal.SWTMessages_ja.properties" ),
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315 getImportData!( "swt.internal.SWTMessages_ko.properties" ),
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316 getImportData!( "swt.internal.SWTMessages_nl.properties" ),
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317 getImportData!( "swt.internal.SWTMessages_no.properties" ),
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318 getImportData!( "swt.internal.SWTMessages_pl.properties" ),
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319 getImportData!( "swt.internal.SWTMessages_pt_BR.properties" ),
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320 getImportData!( "swt.internal.SWTMessages_pt.properties" ),
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321 getImportData!( "swt.internal.SWTMessages_ru.properties" ),
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322 getImportData!( "swt.internal.SWTMessages_sv.properties" ),
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323 getImportData!( "swt.internal.SWTMessages_tr.properties" ),
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324 getImportData!( "swt.internal.SWTMessages_zh_HK.properties" ),
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325 getImportData!( "swt.internal.SWTMessages_zh.properties" ),
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326 getImportData!( "swt.internal.SWTMessages_zh_TW.properties" )
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327 ];
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328
2
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329 private static ResourceBundle msgs = null;
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330
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331 /**
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332 * Returns the NLS'ed message for the given argument. This is only being
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333 * called from DWT.
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334 *
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335 * @param key the key to look up
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336 * @return the message for the given key
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337 *
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338 * @see DWT#getMessage(String)
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339 */
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340 public static String getMessage(String key) {
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341 String answer = key;
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342
317
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343 if (key is null) {
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344 DWT.error (DWT.ERROR_NULL_ARGUMENT);
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345 }
317
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346 if (msgs is null) {
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347 try {
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348 msgs = ResourceBundle.getBundle(SWTMessagesBundleData); //$NON-NLS-1$
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349 } catch (MissingResourceException ex) {
317
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350 answer = key ~ " (no resource bundle)"; //$NON-NLS-1$
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351 }
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352 }
317
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353 if (msgs !is null) {
2
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354 try {
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355 answer = msgs.getString(key);
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356 } catch (MissingResourceException ex2) {}
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357 }
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358 return answer;
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359 }
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360
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361 public static String getMessage(String key, Object[] args) {
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362 String answer = key;
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363
317
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364 if (key is null || args is null) {
2
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365 DWT.error (DWT.ERROR_NULL_ARGUMENT);
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366 }
317
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367 if (msgs is null) {
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368 try {
317
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369 msgs = ResourceBundle.getBundle(SWTMessagesBundleData); //$NON-NLS-1$
2
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370 } catch (MissingResourceException ex) {
317
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371 answer = key ~ " (no resource bundle)"; //$NON-NLS-1$
2
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372 }
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373 }
317
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374 if (msgs !is null) {
2
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375 try {
317
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376 char[] frmt = msgs.getString(key);
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377 switch( args.length ){
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378 case 0: answer = Format(frmt); break;
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379 case 1: answer = Format(frmt, args[0]); break;
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380 case 2: answer = Format(frmt, args[0], args[1]); break;
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381 case 3: answer = Format(frmt, args[0], args[1], args[2]); break;
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382 case 4: answer = Format(frmt, args[0], args[1], args[2], args[3]); break;
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383 case 5: answer = Format(frmt, args[0], args[1], args[2], args[3], args[4]); break;
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384 default:
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385 implMissing(__FILE__, __LINE__ );
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386 }
2
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387 } catch (MissingResourceException ex2) {}
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388 }
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389 return answer;
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390 }
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391
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392
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393 /**
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394 * Interrupt the current thread.
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395 * <p>
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396 * Note that this is not available on CLDC.
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397 * </p>
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398 */
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399 public static void interrupt() {
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400 //PORTING_FIXME: how to implement??
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401 //Thread.currentThread().interrupt();
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402 }
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403
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404 /**
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405 * Compares two instances of class String ignoring the case of the
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406 * characters and answers if they are equal.
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407 *
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408 * @param s1 string
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409 * @param s2 string
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410 * @return true if the two instances of class String are equal
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411 */
212
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412 public static bool equalsIgnoreCase(String s1, String s2) {
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413 String s1b = new char[ s1.length ];
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414 String s2b = new char[ s1.length ];
2
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415 scope(exit){
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416 delete s1b;
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417 delete s2b;
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418 }
212
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419 String s1c = Unicode.toFold( s1, s1b );
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420 String s2c = Unicode.toFold( s2, s2b );
2
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421 return s1c == s2c;
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422 }
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423
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424 }