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Java > Open Source Codes > org > jruby > util > IOHandlerSocket


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2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
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5  * License Version 1.0 (the "License"); you may not use this file
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14  * Copyright (C) 2006 Evan <evan@heron.sytes.net>
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28 package org.jruby.util;
29
30 import java.io.EOFException JavaDoc;
31 import java.io.IOException JavaDoc;
32 import java.io.InputStream JavaDoc;
33 import java.io.OutputStream JavaDoc;
34
35 import org.jruby.Ruby;
36 import org.jruby.util.IOHandlerUnseekable;
37
38 public class IOHandlerSocket extends IOHandlerUnseekable {
39     public IOHandlerSocket(Ruby runtime, InputStream JavaDoc inStream, OutputStream JavaDoc outStream)
40         throws IOException JavaDoc {
41         super(runtime, inStream, outStream);
42     }
43
44     public ByteList recv(int len) throws IOException JavaDoc, BadDescriptorException {
45         if(!isOpen()) {
46             throw new IOException JavaDoc("Socket not open");
47         }
48         if(len < 1) {
49             return new ByteList(ByteList.NULL_ARRAY);
50         }
51
52         // this should provide blocking until data is available...
53 int c = sysread();
54         if (c == -1) {
55             throw new EOFException JavaDoc();
56         }
57         int available = getInputStream().available();
58         len = len - 1 < available ? len - 1 : available;
59         ByteList buf = new ByteList(len + 1);
60         buf.append(c);
61         sysread(buf, 1, len);
62         return buf;
63     }
64 }
65
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