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annotate base/src/java/io/BufferedInputStream.d @ 27:1bf55a6eb092

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Renamed java tree to base
author Frank Benoit <benoit@tionex.de>
date Sat, 21 Mar 2009 11:33:57 +0100
parents java/src/java/io/BufferedInputStream.d@9b96950f2c3c
children 9f4c18c268b2
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1 /**
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2 * Authors: Frank Benoit <keinfarbton@googlemail.com>
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3 */
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4 module java.io.BufferedInputStream;
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5
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6 import java.io.InputStream;
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7 import java.lang.all;
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8
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9 public class BufferedInputStream : java.io.InputStream.InputStream {
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10
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11 alias java.io.InputStream.InputStream.read read;
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12
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13 private const int defaultSize = 8192;
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14 protected byte[] buf;
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15 protected int count = 0; /// The index one greater than the index of the last valid byte in the buffer.
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16 protected int pos = 0; /// The current position in the buffer.
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17 protected int markpos = (-1);
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18 protected int marklimit;
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19 java.io.InputStream.InputStream istr;
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20
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21 public this ( java.io.InputStream.InputStream istr ){
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22 this( istr, defaultSize );
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23 }
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24
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25 public this ( java.io.InputStream.InputStream istr, int size ){
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26 this.istr = istr;
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27 if( size <= 0 ){
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28 throw new IllegalArgumentException( "Buffer size <= 0" );
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29 }
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30 buf.length = size;
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31 }
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32
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33 private InputStream getAndCheckIstr(){
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34 InputStream res = istr;
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35 if( res is null ){
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36 throw new IOException( "Stream closed" );
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37 }
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38 return res;
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39 }
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40 private byte[] getAndCheckBuf(){
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41 byte[] res = buf;
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42 if( res is null ){
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43 throw new IOException( "Stream closed" );
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44 }
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45 return res;
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46 }
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47 private void fill(){
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48 assert( pos == count );
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49 pos = 0;
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50 count = 0;
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51 count = getAndCheckIstr().read( buf );
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52 if( count < 0 ){
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53 count = 0;
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54 istr = null;
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55 }
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56 }
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57 public synchronized int read(){
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58 if( pos >= count ){
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59 fill();
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60 if( pos >= count ){
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61 return -1;
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62 }
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63 }
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64 return getAndCheckBuf()[pos++] & 0xFF;
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65 }
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66
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67 public synchronized int read( byte[] b, int off, int len ){
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68 return super.read( b, off, len );
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69 }
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70
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71 public synchronized long skip( long n ){
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72 return this.istr.skip(n);
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73 }
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74
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75 public synchronized int available(){
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76 int istr_avail = 0;
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77 if( istr !is null ){
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78 istr_avail = istr.available();
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79 }
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80 return istr_avail + (count - pos);
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81 }
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82
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83 public synchronized void mark( int readlimit ){
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84 implMissing( __FILE__, __LINE__ );
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85 this.istr.mark( readlimit );
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86 }
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87
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88 public synchronized void reset(){
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89 implMissing( __FILE__, __LINE__ );
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90 this.istr.reset();
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91 }
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92
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93 public bool markSupported(){
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94 implMissing( __FILE__, __LINE__ );
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95 return false;
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96 }
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97
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98 public void close(){
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99 if (this.istr !is null) {
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100 this.istr.close();
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101 }
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102 }
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105 }
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