src/org/ibex/graphics/MSPack.java

   1 // Copyright 2000-2005 the Contributors, as shown in the revision logs.
   2 // Licensed under the GNU General Public License version 2 ("the License").
   3 // You may not use this file except in compliance with the License.
   4
   5 package org.ibex.graphics;
   6
   7 import org.ibex.core.Main;
   8 import org.ibex.util.*;
   9 import java.io.*;
  10 import org.ibex.nestedvm.*;
  11 import org.ibex.nestedvm.Runtime;
  12
  13 public class MSPack {
  14     private static byte[] image;
  15
  16     private String[] fileNames;
  17     private int[] lengths;
  18     private byte[][] data;
  19
  20     public static class MSPackException extends IOException { public MSPackException(String s) { super(s); } }
  21
  22     public MSPack(InputStream cabIS) throws IOException {
  23         try {
  24             Runtime vm = (Runtime)Class.forName("org.ibex.util.MIPSApps").newInstance();
  25             byte[] cab = InputStreamToByteArray.convert(cabIS);
  26             int cabAddr = vm.sbrk(cab.length);
  27             if(cabAddr < 0) throw new MSPackException("sbrk failed");
  28
  29             vm.copyout(cab,cabAddr,cab.length);
  30
  31             vm.setUserInfo(0,cabAddr);
  32             vm.setUserInfo(1,cab.length);
  33
  34             int status = vm.run(new String[]{ "mspack"} );
  35             if(status != 0) throw new MSPackException("mspack.mips failed (" + status + ")");
  36
  37             /*static struct {
  38                 char *filename;
  39                 char *data;
  40                 int length;
  41             } output_table[MAX_MEMBERS+1]; */
  42
  43             int filesTable = vm.getUserInfo(2);
  44             int count=0;
  45             while(vm.memRead(filesTable+count*12) != 0) count++;
  46
  47             fileNames = new String[count];
  48             data = new byte[count][];
  49             lengths = new int[count];
  50
  51             for(int i=0,addr=filesTable;i<count;i++,addr+=12) {
  52                 int length = vm.memRead(addr+8);
  53                 data[i] = new byte[length];
  54                 lengths[i] = length;
  55                 fileNames[i] = vm.cstring(vm.memRead(addr));
  56                 System.out.println("" + fileNames[i]);
  57                 vm.copyin(vm.memRead(addr+4),data[i],length);
  58             }
  59         } catch(Runtime.ExecutionException e) {
  60             e.printStackTrace();
  61             throw new MSPackException("mspack.mips crashed");
  62         } catch(Exception e) {
  63             throw new MSPackException(e.toString());
  64         }
  65     }
  66
  67     public String[] getFileNames() { return fileNames; }
  68     public int[] getLengths() { return lengths; }
  69     public InputStream getInputStream(int index) {
  70         return new KnownLength.KnownLengthInputStream(new ByteArrayInputStream(data[index]), data[index].length);
  71     }
  72     public InputStream getInputStream(String fileName) {
  73         for(int i=0;i<fileNames.length;i++) {
  74             if(fileName.equalsIgnoreCase(fileNames[i])) return getInputStream(i);
  75         }
  76         return null;
  77     }
  78
  79     public static void main(String[] args) throws IOException {
  80         MSPack pack = new MSPack(new FileInputStream(args[0]));
  81         String[] files = pack.getFileNames();
  82         for(int i=0;i<files.length;i++)
  83             System.out.println(i + ": " + files[i] + ": " + pack.getLengths()[i]);
  84         System.out.println("Writing " + files[files.length-1]);
  85         InputStream is = pack.getInputStream(files.length-1);
  86         OutputStream os = new FileOutputStream(files[files.length-1]);
  87         int n;
  88         byte[] buf = new byte[4096];
  89         while((n = is.read(buf)) != -1) os.write(buf,0,n);
  90         os.close();
  91         is.close();
  92     }
  93 }
  94