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annotate dwt/dwthelper/FileInputStream.d @ 156:969e7de37c3d default tip

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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents 623ff6db5f1d
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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.FileInputStream;
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6 import dwt.dwthelper.utils;
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7 import dwt.dwthelper.File;
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8 import dwt.dwthelper.InputStream;
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9 import TangoFile = tango.io.device.File;
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10 import tango.io.protocol.Reader;
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11 import tango.core.Exception;
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12 import tango.text.convert.Format;
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14 public class FileInputStream : dwt.dwthelper.InputStream.InputStream {
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16 alias dwt.dwthelper.InputStream.InputStream.read read;
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18 private TangoFile.File conduit;
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19 private ubyte[] buffer;
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20 private int buf_pos;
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21 private int buf_size;
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22 private const int BUFFER_SIZE = 0x10000;
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23 private bool eof;
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25 public this ( char[] name ){
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26 conduit = new TangoFile.File( name );
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27 buffer = new ubyte[]( BUFFER_SIZE );
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28 }
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30 public this ( dwt.dwthelper.File.File file ){
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31 implMissing( __FILE__, __LINE__ );
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32 conduit = new TangoFile.File( file.getAbsolutePath(), TangoFile.File.ReadExisting);
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33 buffer = new ubyte[]( BUFFER_SIZE );
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34 }
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36 public override int read(){
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37 if( eof ){
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38 return -1;
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39 }
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40 try{
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41 if( buf_pos is buf_size ){
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42 buf_pos = 0;
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43 buf_size = conduit.input.read( buffer );
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44 }
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45 if( buf_size <= 0 ){
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46 eof = true;
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47 return -1;
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48 }
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49 assert( buf_pos < BUFFER_SIZE, Format( "{0} {1}", buf_pos, buf_size ) );
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50 assert( buf_size <= BUFFER_SIZE );
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51 int res = cast(int) buffer[ buf_pos ];
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52 buf_pos++;
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53 return res;
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54 }
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55 catch( IOException e ){
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56 eof = true;
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57 return -1;
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58 }
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59 }
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61 public long skip( long n ){
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62 implMissing( __FILE__, __LINE__ );
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63 return 0L;
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64 }
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66 public int available(){
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67 implMissing( __FILE__, __LINE__ );
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68 return 0;
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69 }
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71 public override void close(){
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72 conduit.close();
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73 }
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74 }
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