1 # Usage: jjs -cp buffer_indexing_linker.jar buffer_index.js
   2 
   3 /*
   4  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  *   - Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *
  13  *   - Redistributions in binary form must reproduce the above copyright
  14  *     notice, this list of conditions and the following disclaimer in the
  15  *     documentation and/or other materials provided with the distribution.
  16  *
  17  *   - Neither the name of Oracle nor the names of its
  18  *     contributors may be used to endorse or promote products derived
  19  *     from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  22  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  25  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  26  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  28  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  29  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 
  34 // This script depends on buffer indexing dynalink linker. Without that
  35 // linker in classpath, this script will fail to run properly.
  36 
  37 function str(buf) {
  38     var s = ''
  39     for (var i = 0; i < buf.length; i++)
  40         s += buf[i] + ","
  41     return s
  42 }
  43 
  44 var ByteBuffer = Java.type("java.nio.ByteBuffer")
  45 var bb = ByteBuffer.allocate(10)
  46 for (var i = 0; i < bb.length; i++)
  47     bb[i] = i*i
  48 print(str(bb))
  49 
  50 var CharBuffer = Java.type("java.nio.CharBuffer")
  51 var cb = CharBuffer.wrap("hello world")
  52 print(str(cb))
  53 
  54 var RandomAccessFile = Java.type("java.io.RandomAccessFile")
  55 var raf = new RandomAccessFile("buffer_index.js", "r")
  56 var chan = raf.getChannel()
  57 var fileSize = chan.size()
  58 var buf = ByteBuffer.allocate(fileSize)
  59 chan.read(buf)
  60 chan.close()
  61 
  62 var str = ''
  63 for (var i = 0; i < buf.length; i++)
  64     str += String.fromCharCode(buf[i])
  65 print(str)