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annotate dwt/internal/Library.d @ 4:bf9fe45b4422

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C, Platform, Point, Rectangle
author Frank Benoit <benoit@tionex.de>
date Fri, 25 Jan 2008 13:01:53 +0100
parents 57151e2793a2
children 3afcd4ddcf90
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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 dwt.internal.Library;
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14
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15 import tango.util.Convert;
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16
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17 // do it here, so it can be evaluated at compile time
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18 // this saves a static ctor.
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19 private int buildSWT_VERSION (int major, int minor) {
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20 return major * 1000 + minor;
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21 }
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22
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23
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24 public class Library {
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25
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26 /* DWT Version - Mmmm (M=major, mmm=minor) */
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27
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28 /**
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29 * DWT Major version number (must be >= 0)
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30 */
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31 static const int MAJOR_VERSION = 3;
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32
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33 /**
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34 * DWT Minor version number (must be in the range 0..999)
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35 */
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36 static const int MINOR_VERSION = 346;
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37
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38 /**
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39 * DWT revision number (must be >= 0)
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40 */
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41 static const int REVISION = 0;
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42
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43 /**
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44 * The JAVA and DWT versions
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45 */
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46 //public static const int JAVA_VERSION;
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47 public static const int SWT_VERSION = .buildSWT_VERSION(MAJOR_VERSION, MINOR_VERSION);
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48
4
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49 version( Windows ){
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50 static const char[] SEPARATOR = "\r\n";
2
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51 }
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52 else {
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53 static assert( false, "only windows supported for this port" );
2
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54 }
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55
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56
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57 static int parseVersion(char[] aVersion) {
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58 if (aVersion == null) return 0;
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59 int major = 0, minor = 0, micro = 0;
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60 int length = aVersion.length, index = 0, start = 0;
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61 bool isDigit( char c ){
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62 return c >= '0' && c <= '9';
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63 }
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64 while (index < length && isDigit(aVersion[index])) index++;
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65 try {
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66 if (start < length) major = to!(int)( aVersion[start .. index] );
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67 } catch (ConversionException e) {}
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68 start = ++index;
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69 while (index < length && isDigit(aVersion[index])) index++;
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70 try {
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71 if (start < length) minor = to!(int)(aVersion[start .. index]);
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72 } catch (ConversionException e) {}
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73 start = ++index;
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74 while (index < length && isDigit(aVersion[index])) index++;
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75 try {
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76 if (start < length) micro = to!(int)(aVersion[start .. index]);
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77 } catch (ConversionException e) {}
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78 return buildJAVA_VERSION(major, minor, micro);
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79 }
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80
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81 /**
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82 * Returns the Java version number as an integer.
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83 *
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84 * @param major
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85 * @param minor
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86 * @param micro
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87 * @return the version
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88 */
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89 public static int buildJAVA_VERSION (int major, int minor, int micro) {
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90 return (major << 16) + (minor << 8) + micro;
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91 }
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92
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93 /**
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94 * Returns the DWT version number as an integer.
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95 *
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96 * @param major
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97 * @param minor
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98 * @return the version
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99 */
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100 public static int buildSWT_VERSION (int major, int minor) {
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101 return .buildSWT_VERSION(major, minor);
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102 }
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103 /+ PORTING_LEFT
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104 static bool extract (char[] fileName, char[] mappedName) {
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105 FileOutputStream os = null;
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106 InputStream is = null;
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107 File file = new File(fileName);
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108 try {
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109 if (!file.exists ()) {
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110 is = Library.class.getResourceAsStream ("/" + mappedName); //$NON-NLS-1$
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111 if (is != null) {
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112 int read;
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113 byte [] buffer = new byte [4096];
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114 os = new FileOutputStream (fileName);
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115 while ((read = is.read (buffer)) != -1) {
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116 os.write(buffer, 0, read);
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117 }
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118 os.close ();
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119 is.close ();
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120 if (!Platform.PLATFORM.equals ("win32")) { //$NON-NLS-1$
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121 try {
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122 Runtime.getRuntime ().exec (new String []{"chmod", "755", fileName}).waitFor(); //$NON-NLS-1$ //$NON-NLS-2$
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123 } catch (Throwable e) {}
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124 }
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125 if (load (fileName)) return true;
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126 }
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127 }
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128 } catch (Throwable e) {
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129 try {
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130 if (os != null) os.close ();
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131 } catch (IOException e1) {}
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132 try {
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133 if (is != null) is.close ();
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134 } catch (IOException e1) {}
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135 }
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136 if (file.exists ()) file.delete ();
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137 return false;
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138 }
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139
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140 static bool load (char[] libName) {
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141 try {
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142 if (libName.indexOf (SEPARATOR) != -1) {
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143 System.load (libName);
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144 } else {
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145 System.loadLibrary (libName);
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146 }
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147 return true;
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148 } catch (UnsatisfiedLinkError e) {}
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149 return false;
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150 }
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151
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152 /**
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153 * Loads the shared library that matches the version of the
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154 * Java code which is currently running. DWT shared libraries
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155 * follow an encoding scheme where the major, minor and revision
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156 * numbers are embedded in the library name and this along with
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157 * <code>name</code> is used to load the library. If this fails,
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158 * <code>name</code> is used in another attempt to load the library,
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159 * this time ignoring the DWT version encoding scheme.
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160 *
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161 * @param name the name of the library to load
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162 */
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163 public static void loadLibrary (char[] name) {
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164 loadLibrary (name, true);
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165 }
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166
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167 /**
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168 * Loads the shared library that matches the version of the
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169 * Java code which is currently running. DWT shared libraries
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170 * follow an encoding scheme where the major, minor and revision
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171 * numbers are embedded in the library name and this along with
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172 * <code>name</code> is used to load the library. If this fails,
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173 * <code>name</code> is used in another attempt to load the library,
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174 * this time ignoring the DWT version encoding scheme.
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175 *
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176 * @param name the name of the library to load
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177 * @param mapName true if the name should be mapped, false otherwise
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178 */
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179 public static void loadLibrary (char[] name, boolean mapName) {
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180
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181 /* Compute the library name and mapped name */
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182 String libName1, libName2, mappedName1, mappedName2;
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183 if (mapName) {
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184 String version = System.getProperty ("swt.version"); //$NON-NLS-1$
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185 if (version == null) {
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186 version = "" + MAJOR_VERSION; //$NON-NLS-1$
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187 /* Force 3 digits in minor version number */
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188 if (MINOR_VERSION < 10) {
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189 version += "00"; //$NON-NLS-1$
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190 } else {
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191 if (MINOR_VERSION < 100) version += "0"; //$NON-NLS-1$
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192 }
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193 version += MINOR_VERSION;
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194 /* No "r" until first revision */
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195 if (REVISION > 0) version += "r" + REVISION; //$NON-NLS-1$
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196 }
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197 libName1 = name + "-" + Platform.PLATFORM + "-" + version; //$NON-NLS-1$ //$NON-NLS-2$
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198 libName2 = name + "-" + Platform.PLATFORM; //$NON-NLS-1$
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199 mappedName1 = System.mapLibraryName (libName1);
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200 mappedName2 = System.mapLibraryName (libName2);
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201 } else {
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202 libName1 = libName2 = mappedName1 = mappedName2 = name;
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203 }
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204
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205 /* Try loading library from swt library path */
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206 String path = System.getProperty ("swt.library.path"); //$NON-NLS-1$
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207 if (path != null) {
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208 path = new File (path).getAbsolutePath ();
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209 if (load (path + SEPARATOR + mappedName1)) return;
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210 if (mapName && load (path + SEPARATOR + mappedName2)) return;
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211 }
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212
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213 /* Try loading library from java library path */
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214 if (load (libName1)) return;
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215 if (mapName && load (libName2)) return;
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216
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217 /* Try loading library from the tmp directory if swt library path is not specified */
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218 if (path == null) {
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219 path = System.getProperty ("java.io.tmpdir"); //$NON-NLS-1$
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220 path = new File (path).getAbsolutePath ();
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221 if (load (path + SEPARATOR + mappedName1)) return;
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222 if (mapName && load (path + SEPARATOR + mappedName2)) return;
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223 }
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224
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225 /* Try extracting and loading library from jar */
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226 if (path != null) {
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227 if (extract (path + SEPARATOR + mappedName1, mappedName1)) return;
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228 if (mapName && extract (path + SEPARATOR + mappedName2, mappedName2)) return;
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229 }
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230
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231 /* Failed to find the library */
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232 throw new UnsatisfiedLinkError ("no " + libName1 + " or " + libName2 + " in swt.library.path, java.library.path or the jar file"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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233 }
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234 +/
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235 }