bundles/org.simantics.fastlz/src/org/simantics/fastlz/impl/OS.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.fastlz.impl;\r
  13 \r
  14 import java.io.Closeable;\r
  15 import java.io.File;\r
  16 import java.io.FileNotFoundException;\r
  17 import java.io.FileOutputStream;\r
  18 import java.io.IOException;\r
  19 import java.io.InputStream;\r
  20 import java.net.URL;\r
  21 \r
  22 import org.simantics.fastlz.ARCHType;\r
  23 import org.simantics.fastlz.OSType;\r
  24 \r
  25 /**\r
  26  * @author Tuukka Lehtonen\r
  27  */\r
  28 public class OS {\r
  29 \r
  30     /**\r
  31      * Extracts the specified source file in the specified bundle into the\r
  32      * specified local directory.\r
  33      * \r
  34      * @param url the source URL to stream the resource from\r
  35      * @param targetFile the target file to write the resource to\r
  36      * @param deleteOnExit <code>true</code> to use {@link File#deleteOnExit()}\r
  37      *        on the resulting file. Note that this does not guarantee that the\r
  38      *        file is deleted when the JVM exits\r
  39      * @return the resulting file\r
  40      * @throws FileNotFoundException\r
  41      */\r
  42     public static File copyResource(URL url, File targetFile) throws IOException, FileNotFoundException {\r
  43         FileOutputStream os = null;\r
  44         InputStream is = null;\r
  45         try {\r
  46             if (targetFile.exists())\r
  47                 targetFile.delete();\r
  48 \r
  49             is = url.openStream();\r
  50             int read;\r
  51             byte [] buffer = new byte [16384];\r
  52             os = new FileOutputStream (targetFile);\r
  53             while ((read = is.read (buffer)) != -1) {\r
  54                 os.write(buffer, 0, read);\r
  55             }\r
  56             os.close ();\r
  57             is.close ();\r
  58 \r
  59             return targetFile;\r
  60         } finally {\r
  61             uncheckedClose(os);\r
  62             uncheckedClose(is);\r
  63         }\r
  64     }\r
  65 \r
  66     public static File extractLib(URL libURL, String libName) throws FileNotFoundException, IOException {\r
  67         String tmpDirStr = System.getProperty("java.io.tmpdir");\r
  68         if (tmpDirStr == null)\r
  69             throw new NullPointerException("java.io.tmpdir property is null");\r
  70         File tmpDir = new File(tmpDirStr);\r
  71         File libFile = new File(tmpDir, libName);\r
  72         return copyResource(libURL, libFile);\r
  73     }\r
  74 \r
  75     public static void uncheckedClose(Closeable closeable) {\r
  76         try {\r
  77             if (closeable != null)\r
  78                 closeable.close();\r
  79         } catch (IOException e) {\r
  80             //ignore\r
  81         }\r
  82     }\r
  83 \r
  84     public static String formOsArchSuffix() {\r
  85         String osName = System.getProperty("os.name");\r
  86         String osArch = System.getProperty("os.arch");\r
  87         OSType os = OSType.calculate();\r
  88         ARCHType arch = ARCHType.calculate();\r
  89 \r
  90         if (os == OSType.UNKNOWN)\r
  91             throw new UnsatisfiedLinkError("unknown OS '" + osName + "' cannot load native fastlz library");\r
  92         if (arch == ARCHType.UNKNOWN)\r
  93             throw new UnsatisfiedLinkError("unknown architecture '" + osArch + "' cannot load native fastlz library");\r
  94 \r
  95         String lib = "";\r
  96         switch (os) {\r
  97             case APPLE:\r
  98                 lib += "-darwin";\r
  99                 switch (arch) {\r
 100                     case PPC:\r
 101                         lib += "-ppc";\r
 102                         break;\r
 103                     case PPC_64:\r
 104                         lib += "-ppc_64";\r
 105                         break;\r
 106                     case X86:\r
 107                         lib += "-x86";\r
 108                         break;\r
 109                     case X86_64:\r
 110                         lib += "-x86_64";\r
 111                         break;\r
 112                     default:\r
 113                         throw new UnsatisfiedLinkError("Unsupported architecture for Apple OS: " + osArch);\r
 114                 }\r
 115                 break;\r
 116             case LINUX:\r
 117                 lib += "-linux";\r
 118                 switch (arch) {\r
 119                     case X86:\r
 120                         lib += "-x86";\r
 121                         break;\r
 122                     case X86_64:\r
 123                         lib += "-x86_64";\r
 124                         break;\r
 125                     default:\r
 126                         throw new UnsatisfiedLinkError("Unsupported architecture for Linux OS: " + osArch);\r
 127                 }\r
 128                 break;\r
 129             case SUN:\r
 130                 lib += "-sun";\r
 131                 switch (arch) {\r
 132                     case SPARC:\r
 133                         lib += "-sparc";\r
 134                         break;\r
 135                     case X86_64:\r
 136                         lib += "-x86_64";\r
 137                         break;\r
 138                     default:\r
 139                         throw new UnsatisfiedLinkError("Unsupported architecture for Sun OS: " + osArch);\r
 140                 }\r
 141                 break;\r
 142             case WINDOWS:\r
 143                 lib += "-windows";\r
 144                 switch (arch) {\r
 145                     case X86:\r
 146                         lib += "-x86";\r
 147                         break;\r
 148                     case X86_64:\r
 149                         lib += "-x86_64";\r
 150                         break;\r
 151                     default:\r
 152                         throw new UnsatisfiedLinkError("Unsupported architecture for Windows: " + osArch);\r
 153                 }\r
 154                 break;\r
 155             default:\r
 156                 throw new UnsatisfiedLinkError("Unsupported operating system: " + os);\r
 157         }\r
 158         return lib;\r
 159     }\r
 160 \r
 161     public static String resolveLibName() {\r
 162         String lib = "fastlz";\r
 163         lib = System.mapLibraryName(lib + formOsArchSuffix());\r
 164         return lib;\r
 165     }\r
 166 \r
 167 }\r