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annotate dwt/dwthelper/FileInputStream.d @ 0:380af2bdd8e5

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Upload of whole dwt tree
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sat, 09 Aug 2008 17:00:02 +0200
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children 62202ce0039f
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
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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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10 import tango.io.FileConduit;
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11 import tango.io.protocol.Reader;
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12 import tango.core.Exception;
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13 import tango.text.convert.Format;
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15 public class FileInputStream : dwt.dwthelper.InputStream.InputStream {
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17 alias dwt.dwthelper.InputStream.InputStream.read read;
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18
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19 private FileConduit conduit;
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20 private ubyte[] buffer;
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21 private int buf_pos;
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22 private int buf_size;
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23 private const int BUFFER_SIZE = 0x10000;
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24 private bool eof;
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25
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26 public this ( char[] name ){
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27 conduit = new FileConduit( name );
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28 buffer = new ubyte[]( BUFFER_SIZE );
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29 }
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31 public this ( dwt.dwthelper.File.File file ){
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32 implMissing( __FILE__, __LINE__ );
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33 conduit = new FileConduit( file.getAbsolutePath(), FileConduit.ReadExisting );
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34 buffer = new ubyte[]( BUFFER_SIZE );
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35 }
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36
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37 public override int read(){
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38 if( eof ){
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39 return -1;
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40 }
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41 try{
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42 if( buf_pos is buf_size ){
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43 buf_pos = 0;
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44 buf_size = conduit.input.read( buffer );
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45 }
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46 if( buf_size <= 0 ){
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47 eof = true;
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48 return -1;
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49 }
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50 assert( buf_pos < BUFFER_SIZE, Format( "{0} {1}", buf_pos, buf_size ) );
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51 assert( buf_size <= BUFFER_SIZE );
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52 int res = cast(int) buffer[ buf_pos ];
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53 buf_pos++;
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54 return res;
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55 }
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56 catch( IOException e ){
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57 eof = true;
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58 return -1;
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59 }
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60 }
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61
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62 public long skip( long n ){
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63 implMissing( __FILE__, __LINE__ );
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64 return 0L;
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65 }
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66
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67 public int available(){
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68 implMissing( __FILE__, __LINE__ );
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69 return 0;
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70 }
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71
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72 public override void close(){
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73 conduit.close();
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74 }
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75 }
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