Package jp.gr.java_conf.dangan.io

Class CachedInputStream

java.lang.Object
java.io.InputStream
jp.gr.java_conf.dangan.io.CachedInputStream
All Implemented Interfaces:
Closeable, AutoCloseable
public class CachedInputStream extends InputStream
?L???b?V?????g?p???????￢?????????????????X?g???[???B
BufferedInputStream ???? read?n???\?b?h?? synchronized ???????￠???￠?????A?????????????????X?????￠?Amark/reset ?? ?L???b?V?????????????????u?????????s?????????????T?|?[?g???????A ?????????????±???????????X?g???[???????\???????A???????￠???????B 
 -- revision history --
 $Log: CachedInputStream.java,v $
 Revision 1.3  2002/12/05 00:00:00  dangan
 [maintenance]
     ?\?[?X????

 Revision 1.2  2002/11/02 00:00:00  dangan
 [bug fix]
     available() ???u???b?N?????????????????????????????￠?l?????????￠???B

 Revision 1.1  2002/09/05 00:00:00  dangan
 [change]
     EndOfStream ???B???????? read( new byte[0] ) ?? 
     read( byte[] buf, int off, 0 ) ???????l??
     InputStream ?????¶?? 0 ?????????????????B

 Revision 1.0  2002/09/05 00:00:00  dangan
 add to version control
 [bug fix]
     mark() ?? ???±?????? in ???n?? readLimit ???v?Z???????????????A
     ?v???????? readLimit ???B?????O???}?[?N???u???j???????????????????B
     read( buf, off, len ) ???? System.arraycopy ???????o???? 
     dst ?? src ???t???????￠???B
 [change]
     EndOfStream ???B???????? read( new byte[0] ) ??
     read( buf, off?C0 )  ?? -1 ?????????????C???B
 [maintenance]
     ?^?u?p?~
     ???C?Z???X?¶???C??
Version:
$Revision: 1.3 $
Author:
$Author: dangan $

  • Constructor Summary

    Constructors
    Constructor
    Description
    CachedInputStream(InputStream in)
    ?f?t?H???g???T?C?Y???L???b?V???????? CachedInputStream???\?z?????B
    CachedInputStream(InputStream in, int cacheSize)
    ?w?????????T?C?Y???L???b?V???????? CachedInputStream???\?z?????B

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    available()
    ???±???????????X?g???[???????u???b?N?????￠?? ?????????±???????????o?C?g?????????B
    void
    close()
    ?±???????X?g???[???????¶?A?g?p?????￠?? ?S???????\?[?X???J???????B
    void
    mark(int readLimit)
    ???±???????????X?g???[???????????u???}?[?N?????????A reset() ???\?b?h???}?[?N???????_?? ???????????u?? ?????????????????B
    boolean
    markSupported()
    ???±???????????X?g???[???? mark() ?? reset() ?? ?T?|?[?g?????????????B
    int
    read()
    ???±???????X?g???[?????? 1?o?C?g???f?[?^?? 0?`255 ???}?b?v?????????????B
    int
    read(byte[] buffer)
    ???±???????X?g???[?????? buffer?????????????? ?f?[?^???????????B
    ?±?????\?b?h?? buffer ?????????????f?[?^?????????????A EndOfStream?????B?????????u???b?N?????B
    int
    read(byte[] buffer, int index, int length)
    ???±???????X?g???[?????? buffer ?? index ???w???????? ???u?? length ?o?C?g?f?[?^???????????B
    ?±?????\?b?h?? length ?o?C?g???????????A EndOfStream?????B?????????u???b?N?????B
    void
    reset()
    ???±???????????X?g???[???????????????u???????? mark() ???\?b?h???????o???????????????u???????????B
    long
    skip(long length)
    ???±???????????X?g???[?????f?[?^?? length ?o?C?g???????????B
    ?±?????\?b?h?? length ?o?C?g???????????? EndOfStream ?????B?????????u???b?N?????B

    Methods inherited from class java.io.InputStream

    nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • CachedInputStream

      public CachedInputStream(InputStream in)
      ?f?t?H???g???T?C?Y???L???b?V???????? CachedInputStream???\?z?????B
      Parameters:
      in - ?L???b?V?????K?v???????X?g???[??
      Throws:
      IllegalArgumentException - in ?? null ??????????

    • CachedInputStream

      public CachedInputStream(InputStream in, int cacheSize)
      ?w?????????T?C?Y???L???b?V???????? CachedInputStream???\?z?????B
      Parameters:
      in - ?L???b?V?????K?v???????X?g???[??
      cacheSize - ?L???b?V?????T?C?Y
      Throws:
      IllegalArgumentException - cacheSize ?? 0?????????????A in ?? null ??????????

  • Method Details

    • read

      public int read() throws IOException
      ???±???????X?g???[?????? 1?o?C?g???f?[?^?? 0?`255 ???}?b?v?????????????B
      Specified by:
      read in class InputStream
      Returns:
      ?????o?????? 1?o?C?g???f?[?^???????B
      ???? EndOfStream???B?????￠???????? -1???????B
      Throws:
      IOException - ???±???????????X?g???[???? ???o???G???[?????¶????????

    • read

      public int read(byte[] buffer) throws IOException
      ???±???????X?g???[?????? buffer?????????????? ?f?[?^???????????B
      ?±?????\?b?h?? buffer ?????????????f?[?^?????????????A EndOfStream?????B?????????u???b?N?????B
      Overrides:
      read in class InputStream
      Parameters:
      buffer - ???????????f?[?^???i?[???????????o?C?g?z??
      Returns:
      buffer ?????????????f?[?^?????o?C?g?????????B
      ???? EndOfStream???B?????￠???????? -1???????B
      Throws:
      IOException - ???±???????????X?g???[???? ???o???G???[?????¶????????

    • read

      public int read(byte[] buffer, int index, int length) throws IOException
      ???±???????X?g???[?????? buffer ?? index ???w???????? ???u?? length ?o?C?g?f?[?^???????????B
      ?±?????\?b?h?? length ?o?C?g???????????A EndOfStream?????B?????????u???b?N?????B
      Overrides:
      read in class InputStream
      Parameters:
      buffer - ???????????f?[?^???i?[???????????o?C?g?z??
      index - buffer?????f?[?^?????????J?n???u
      length - buffer???????????f?[?^??
      Returns:
      buffer ?????????????f?[?^?????o?C?g?????????B
      ???? EndOfStream???B?????￠???????? -1???????B
      Throws:
      IOException - ???±???????????X?g???[???? ???o???G???[?????¶????????

    • skip

      public long skip(long length) throws IOException
      ???±???????????X?g???[?????f?[?^?? length ?o?C?g???????????B
      ?±?????\?b?h?? length ?o?C?g???????????? EndOfStream ?????B?????????u???b?N?????B
      Overrides:
      skip in class InputStream
      Parameters:
      length - ???????????o?C?g???B
      Returns:
      ?????????????????????o?C?g???B
      Throws:
      IOException - ???±???????????X?g???[???? ???o???G???[?????¶????????

    • mark

      public void mark(int readLimit)
      ???±???????????X?g???[???????????u???}?[?N?????????A reset() ???\?b?h???}?[?N???????_?? ???????????u?? ?????????????????B
      Overrides:
      mark in class InputStream
      Parameters:
      readLimit - ?}?[?N???u???????????E???o?C?g???B ?±???o?C?g?????´?????f?[?^?????? ?????????? reset()?????????????? ?\?????????B

    • reset

      public void reset() throws IOException
      ???±???????????X?g???[???????????????u???????? mark() ???\?b?h???????o???????????????u???????????B
      Overrides:
      reset in class InputStream
      Throws:
      IOException -
      (1) CachedInputStream ?? mark ???????????￠???￠?????B
      (2) ???±???????????X?g???[???? markSupported()?? false ???????????B
      (3) ???±???????????X?g???[???? ???o???G???[?????¶?????????B
      ?????????B

    • markSupported

      public boolean markSupported()
      ???±???????????X?g???[???? mark() ?? reset() ?? ?T?|?[?g?????????????B
      Overrides:
      markSupported in class InputStream
      Returns:
      ?X?g???[???? mark() ?? reset() ?? ?T?|?[?g?????????? true?B
      ?T?|?[?g?????￠?????? false?B

    • available

      public int available() throws IOException
      ???±???????????X?g???[???????u???b?N?????￠?? ?????????±???????????o?C?g?????????B
      Overrides:
      available in class InputStream
      Returns:
      ?u???b?N?????￠???????o?????o?C?g???B
      Throws:
      IOException - ???±???????????X?g???[???? ???o???G???[?????¶????????

    • close

      public void close() throws IOException
      ?±???????X?g???[???????¶?A?g?p?????￠?? ?S???????\?[?X???J???????B
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Closeable
      Overrides:
      close in class InputStream
      Throws:
      IOException - ???±???????????X?g???[???? ???o???G???[?????¶????????