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

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