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annotate dwt/dwthelper/InflaterInputStream.d @ 134:116d23207a86

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changed PNG loader to use internal inflating
author Frank Benoit <benoit@tionex.de>
date Mon, 21 Jan 2008 18:38:19 +0100
parents e22f9b443521
children e10de397beb1
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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 dwt.dwthelper.InflaterInputStream;
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5
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6 public import dwt.dwthelper.InputStream;
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7 import dwt.dwthelper.utils;
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8 import tango.io.Stdout;
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9 import tango.io.compress.ZlibStream;
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10
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11 class InputStreamWrapper : tango.io.model.IConduit.InputStream {
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12
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13 dwt.dwthelper.InputStream.InputStream istr;
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14
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15 this( dwt.dwthelper.InputStream.InputStream istr ){
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16 this.istr = istr;
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17 }
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18
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19 uint read (void[] dst){
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20 int res = istr.read( cast(byte[])dst );
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21 return res;
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22 }
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23
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24 tango.io.model.IConduit.InputStream clear (){
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25 return this;
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26 }
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27
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28 tango.io.model.IConduit.IConduit conduit (){
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29 return null;
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30 }
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31
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32 void close (){
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33 istr.close();
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34 }
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35 }
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36
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37 public class InflaterInputStream : dwt.dwthelper.InputStream.InputStream {
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38
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39 alias dwt.dwthelper.InputStream.InputStream.read read;
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40 alias dwt.dwthelper.InputStream.InputStream.skip skip;
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41 alias dwt.dwthelper.InputStream.InputStream.available available;
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42 alias dwt.dwthelper.InputStream.InputStream.close close;
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43 alias dwt.dwthelper.InputStream.InputStream.mark mark;
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44 alias dwt.dwthelper.InputStream.InputStream.reset reset;
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45 alias dwt.dwthelper.InputStream.InputStream.markSupported markSupported;
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46
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47 protected byte[] buf;
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48 protected int len;
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49 package bool usesDefaultInflater = false;
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50
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51 ZlibInput tangoIstr;
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52
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53 public this ( dwt.dwthelper.InputStream.InputStream istr ){
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54 tangoIstr = new ZlibInput( new InputStreamWrapper(istr ));
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55 }
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56
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57 public int read(){
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58 ubyte[1] data;
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59 uint res = tangoIstr.read( data );
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60 if( res !is 1 ){
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61 return data[0] & 0xFF;
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62 }
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63 return -1;
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64 }
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65
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66 public int read( byte[] b, int off, int len ){
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67 implMissing( __FILE__, __LINE__ );
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68 return 0;
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69 }
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70
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71 public int available(){
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72 implMissing( __FILE__, __LINE__ );
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73 return 0;
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74 }
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75
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76 public long skip( long n ){
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77 implMissing( __FILE__, __LINE__ );
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78 return 0L;
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79 }
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80
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81 public void close(){
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82 implMissing( __FILE__, __LINE__ );
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83 }
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84
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85 public void fill(){
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86 implMissing( __FILE__, __LINE__ );
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87 }
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88
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89 public bool markSupported(){
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90 implMissing( __FILE__, __LINE__ );
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91 return false;
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92 }
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93
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94 public synchronized void mark( int readlimit ){
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95 implMissing( __FILE__, __LINE__ );
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96 }
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97
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98 public synchronized void reset(){
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99 implMissing( __FILE__, __LINE__ );
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100 }
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101 }
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