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annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/internal/Compatibility.d @ 9:950d84783eac

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Removing direct tango deps.
author Frank Benoit <benoit@tionex.de>
date Mon, 09 Mar 2009 14:26:40 +0100
parents 6bf2837c50fe
children 9b96950f2c3c
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 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 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 org.eclipse.swt.internal.Compatibility;
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14
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15 import java.io.File;
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16 //import java.text.MessageFormat;
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17 import java.util.MissingResourceException;
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18 import java.util.ResourceBundle;
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19 //import java.util.zip.DeflaterOutputStream;
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20 import java.util.zip.InflaterInputStream;
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21
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22
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23 import org.eclipse.swt.SWT;
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24 public import java.io.FileInputStream;
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25 public import java.io.FileOutputStream;
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26
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27 import Unicode = tango.text.Unicode;
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28 import tango.sys.Process;
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29 import java.lang.all;
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30 import java.util.ResourceBundle;
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31 import tango.io.Path;
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32
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33 /**
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34 * This class is a placeholder for utility methods commonly
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35 * used on J2SE platforms but not supported on some J2ME
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36 * profiles.
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37 * <p>
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38 * It is part of our effort to provide support for both J2SE
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39 * and J2ME platforms.
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40 * </p>
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41 * <p>
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42 * IMPORTANT: some of the methods have been modified from their
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43 * J2SE parents. Refer to the description of each method for
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44 * specific changes.
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45 * </p>
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46 * <ul>
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47 * <li>Exceptions thrown may differ since J2ME's set of
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48 * exceptions is a subset of J2SE's one.
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49 * </li>
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50 * <li>The range of the mathematic functions is subject to
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51 * change.
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52 * </li>
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53 * </ul>
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54 */
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55 public final class Compatibility {
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56
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57 /**
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58 * Returns the PI constant as a double.
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59 */
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60 public static const real PI = Math.PI;
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61
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62 static const real toRadians = PI / 180;
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63
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64 /**
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65 * Answers the length of the side adjacent to the given angle
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66 * of a right triangle. In other words, it returns the integer
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67 * conversion of length * cos (angle).
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68 * <p>
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69 * IMPORTANT: the j2me version has an additional restriction on
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70 * the argument. length must be between -32767 and 32767 (inclusive).
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71 * </p>
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72 *
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73 * @param angle the angle in degrees
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74 * @param length the length of the triangle's hypotenuse
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75 * @return the integer conversion of length * cos (angle)
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76 */
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77 public static int cos(int angle, int length) {
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78 return cast(int)(Math.cos(angle * toRadians) * length);
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79 }
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80
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81 /**
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82 * Answers the length of the side opposite to the given angle
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83 * of a right triangle. In other words, it returns the integer
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84 * conversion of length * sin (angle).
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85 * <p>
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86 * IMPORTANT: the j2me version has an additional restriction on
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87 * the argument. length must be between -32767 and 32767 (inclusive).
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88 * </p>
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89 *
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90 * @param angle the angle in degrees
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91 * @param length the length of the triangle's hypotenuse
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92 * @return the integer conversion of length * sin (angle)
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93 */
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94 public static int sin(int angle, int length) {
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95 return cast(int)(Math.sin(angle * toRadians) * length);
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96 }
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97
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98 /**
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99 * Answers the most negative (i.e. closest to negative infinity)
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100 * integer value which is greater than the number obtained by dividing
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101 * the first argument p by the second argument q.
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102 *
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103 * @param p numerator
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104 * @param q denominator (must be different from zero)
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105 * @return the ceiling of the rational number p / q.
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106 */
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107 public static int ceil(int p, int q) {
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108 return cast(int)Math.ceil(cast(float)p / q);
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109 }
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110
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111 /**
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112 * Answers whether the indicated file exists or not.
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113 *
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114 * @param parent the file's parent directory
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115 * @param child the file's name
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116 * @return true if the file exists
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117 */
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118 public static bool fileExists(String parent, String child) {
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119 return FS.exists( FS.join(parent, child));
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120 }
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121
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122 /**
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123 * Answers the most positive (i.e. closest to positive infinity)
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124 * integer value which is less than the number obtained by dividing
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125 * the first argument p by the second argument q.
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126 *
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127 * @param p numerator
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128 * @param q denominator (must be different from zero)
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129 * @return the floor of the rational number p / q.
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130 */
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131 public static int floor(int p, int q) {
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132 return cast(int)Math.floor(cast(double)p / q);
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133 }
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134
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135 /**
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136 * Answers the result of rounding to the closest integer the number obtained
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137 * by dividing the first argument p by the second argument q.
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138 * <p>
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139 * IMPORTANT: the j2me version has an additional restriction on
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140 * the arguments. p must be within the range 0 - 32767 (inclusive).
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141 * q must be within the range 1 - 32767 (inclusive).
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142 * </p>
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143 *
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144 * @param p numerator
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145 * @param q denominator (must be different from zero)
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146 * @return the closest integer to the rational number p / q
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147 */
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148 public static int round(int p, int q) {
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149 return cast(int)Math.round(cast(float)p / q);
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150 }
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151
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152 /**
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153 * Returns 2 raised to the power of the argument.
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154 *
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155 * @param n an int value between 0 and 30 (inclusive)
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156 * @return 2 raised to the power of the argument
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157 *
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158 * @exception IllegalArgumentException <ul>
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159 * <li>ERROR_INVALID_RANGE - if the argument is not between 0 and 30 (inclusive)</li>
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160 * </ul>
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161 */
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162 public static int pow2(int n) {
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163 if (n >= 1 && n <= 30)
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164 return 2 << (n - 1);
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165 else if (n != 0) {
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166 SWT.error(SWT.ERROR_INVALID_RANGE);
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167 }
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168 return 1;
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169 }
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170
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171 /**
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172 * Create an DeflaterOutputStream if such things are supported.
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173 *
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174 * @param stream the output stream
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175 * @return a deflater stream or <code>null</code>
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176 * @exception IOException
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177 *
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178 * @since 3.4
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179 */
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180 public static OutputStream newDeflaterOutputStream(OutputStream stream) {
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181 //DWT_TODO
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182 implMissing(__FILE__,__LINE__);
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183 return null;
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184 //return new DeflaterOutputStream(stream);
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185 }
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186
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187 /**
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188 * Open a file if such things are supported.
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189 *
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190 * @param filename the name of the file to open
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191 * @return a stream on the file if it could be opened.
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192 * @exception IOException
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193 */
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194 public static InputStream newFileInputStream(String filename) {
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195 return new FileInputStream(filename);
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196 }
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197
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198 /**
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199 * Open a file if such things are supported.
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200 *
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201 * @param filename the name of the file to open
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202 * @return a stream on the file if it could be opened.
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203 * @exception IOException
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204 */
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205 public static OutputStream newFileOutputStream(String filename) {
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206 return new FileOutputStream(filename);
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207 }
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208
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209 /**
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210 * Create an InflaterInputStream if such things are supported.
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211 *
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212 * @param stream the input stream
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213 * @return a inflater stream or <code>null</code>
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214 * @exception IOException
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215 *
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216 * @since 3.3
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217 */
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218 public static InflaterInputStream newInflaterInputStream(InputStream stream) {
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219 return new InflaterInputStream(stream);
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220 }
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221
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222 /**
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223 * Answers whether the character is a letter.
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224 *
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225 * @param c the character
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226 * @return true when the character is a letter
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227 */
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228 public static bool isLetter(dchar c) {
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229 return Character.isLetter(c);
0
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230 }
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231
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232 /**
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233 * Answers whether the character is a letter or a digit.
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234 *
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235 * @param c the character
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236 * @return true when the character is a letter or a digit
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237 */
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238 public static bool isLetterOrDigit(dchar c) {
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239 return Character.isLetterOrDigit(c);
0
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240 }
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241
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242 /**
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243 * Answers whether the character is a Unicode space character.
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244 *
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245 * @param c the character
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246 * @return true when the character is a Unicode space character
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247 */
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248 public static bool isSpaceChar(dchar c) {
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249 return Character.isSpace(c);
0
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250 }
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251
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252 /**
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253 * Answers whether the character is a whitespace character.
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254 *
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255 * @param c the character to test
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256 * @return true if the character is whitespace
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257 */
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258 public static bool isWhitespace(dchar c) {
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259 return Character.isWhitespace(c);
0
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260 }
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261
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262 /**
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263 * Execute a program in a separate platform process if the
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264 * underlying platform support this.
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265 * <p>
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266 * The new process inherits the environment of the caller.
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267 * </p>
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268 *
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269 * @param prog the name of the program to execute
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270 *
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271 * @exception ProcessException
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272 * if the program cannot be executed
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273 */
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274 public static void exec(String prog) {
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275 auto proc = new Process( prog );
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276 proc.execute;
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277 }
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278
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279 /**
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280 * Execute progArray[0] in a separate platform process if the
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281 * underlying platform support this.
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282 * <p>
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283 * The new process inherits the environment of the caller.
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284 * <p>
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285 *
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286 * @param progArray array containing the program to execute and its arguments
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287 *
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288 * @exception ProcessException
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289 * if the program cannot be executed
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290 */
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291 public static void exec(String[] progArray) {
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292 auto proc = new Process( progArray );
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293 proc.execute;
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294 }
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295
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296 const ImportData[] SWTMessagesBundleData = [
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297 getImportData!( "swt.internal.SWTMessages.properties" ),
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298 getImportData!( "swt.internal.SWTMessages_ar.properties" ),
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299 getImportData!( "swt.internal.SWTMessages_cs.properties" ),
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300 getImportData!( "swt.internal.SWTMessages_da.properties" ),
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301 getImportData!( "swt.internal.SWTMessages_de.properties" ),
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302 getImportData!( "swt.internal.SWTMessages_el.properties" ),
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303 getImportData!( "swt.internal.SWTMessages_es.properties" ),
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304 getImportData!( "swt.internal.SWTMessages_fi.properties" ),
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305 getImportData!( "swt.internal.SWTMessages_fr.properties" ),
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306 getImportData!( "swt.internal.SWTMessages_hu.properties" ),
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307 getImportData!( "swt.internal.SWTMessages_it.properties" ),
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308 getImportData!( "swt.internal.SWTMessages_iw.properties" ),
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309 getImportData!( "swt.internal.SWTMessages_ja.properties" ),
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310 getImportData!( "swt.internal.SWTMessages_ko.properties" ),
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311 getImportData!( "swt.internal.SWTMessages_nl.properties" ),
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312 getImportData!( "swt.internal.SWTMessages_no.properties" ),
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313 getImportData!( "swt.internal.SWTMessages_pl.properties" ),
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314 getImportData!( "swt.internal.SWTMessages_pt_BR.properties" ),
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315 getImportData!( "swt.internal.SWTMessages_pt.properties" ),
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316 getImportData!( "swt.internal.SWTMessages_ru.properties" ),
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317 getImportData!( "swt.internal.SWTMessages_sv.properties" ),
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318 getImportData!( "swt.internal.SWTMessages_tr.properties" ),
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319 getImportData!( "swt.internal.SWTMessages_zh_HK.properties" ),
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320 getImportData!( "swt.internal.SWTMessages_zh.properties" ),
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321 getImportData!( "swt.internal.SWTMessages_zh_TW.properties" )
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322 ];
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323
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324 private static ResourceBundle msgs = null;
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325
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326 /**
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327 * Returns the NLS'ed message for the given argument. This is only being
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328 * called from SWT.
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329 *
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330 * @param key the key to look up
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331 * @return the message for the given key
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332 *
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333 * @see SWT#getMessage(String)
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334 */
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335 public static String getMessage(String key) {
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336 String answer = key;
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337
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338 if (key is null) {
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339 SWT.error (SWT.ERROR_NULL_ARGUMENT);
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340 }
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341 if (msgs is null) {
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342 try {
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343 msgs = ResourceBundle.getBundle(SWTMessagesBundleData); //$NON-NLS-1$
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344 } catch (MissingResourceException ex) {
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345 answer = key ~ " (no resource bundle)"; //$NON-NLS-1$
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346 }
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347 }
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348 if (msgs !is null) {
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349 try {
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350 answer = msgs.getString(key);
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351 } catch (MissingResourceException ex2) {}
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352 }
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353 return answer;
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354 }
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355
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356 public static String getMessage(String key, Object[] args) {
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357 String answer = key;
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358
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359 if (key is null || args is null) {
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360 SWT.error (SWT.ERROR_NULL_ARGUMENT);
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361 }
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362 if (msgs is null) {
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363 try {
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364 msgs = ResourceBundle.getBundle(SWTMessagesBundleData); //$NON-NLS-1$
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365 } catch (MissingResourceException ex) {
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366 answer = key ~ " (no resource bundle)"; //$NON-NLS-1$
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367 }
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368 }
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369 if (msgs !is null) {
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370 try {
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371 char[] frmt = msgs.getString(key);
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372 switch( args.length ){
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373 case 0: answer = Format(frmt); break;
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374 case 1: answer = Format(frmt, args[0]); break;
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375 case 2: answer = Format(frmt, args[0], args[1]); break;
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376 case 3: answer = Format(frmt, args[0], args[1], args[2]); break;
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377 case 4: answer = Format(frmt, args[0], args[1], args[2], args[3]); break;
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378 case 5: answer = Format(frmt, args[0], args[1], args[2], args[3], args[4]); break;
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379 default:
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380 implMissing(__FILE__, __LINE__ );
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381 }
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382 } catch (MissingResourceException ex2) {}
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383 }
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384 return answer;
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385 }
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386
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387
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388 /**
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389 * Interrupt the current thread.
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390 * <p>
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391 * Note that this is not available on CLDC.
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392 * </p>
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393 */
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394 public static void interrupt() {
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395 //PORTING_FIXME: how to implement??
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396 //Thread.currentThread().interrupt();
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397 }
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398
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399 /**
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400 * Compares two instances of class String ignoring the case of the
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401 * characters and answers if they are equal.
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402 *
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403 * @param s1 string
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404 * @param s2 string
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405 * @return true if the two instances of class String are equal
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406 */
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407 public static bool equalsIgnoreCase(String s1, String s2) {
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408 String s1b = new char[ s1.length ];
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409 String s2b = new char[ s1.length ];
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410 scope(exit){
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411 delete s1b;
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412 delete s2b;
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413 }
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414 String s1c = Unicode.toFold( s1, s1b );
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415 String s2c = Unicode.toFold( s2, s2b );
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416 return s1c == s2c;
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417 }
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parents:
diff changeset
418
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419 }