Class CachedInputStream

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable

    public class CachedInputStream
    extends java.io.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​(java.io.InputStream in)
      ?f?t?H???g???T?C?Y???L???b?V???????? CachedInputStream???\?z?????B
      CachedInputStream​(java.io.InputStream in, int cacheSize)
      ?w?????????T?C?Y???L???b?V???????? CachedInputStream???\?z?????B
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      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, transferTo
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • CachedInputStream

        public CachedInputStream​(java.io.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:
        java.lang.IllegalArgumentException - in ?? null ??????????
      • CachedInputStream

        public CachedInputStream​(java.io.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:
        java.lang.IllegalArgumentException - cacheSize ?? 0?????????????A in ?? null ??????????
    • Method Detail

      • read

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

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

        public int read​(byte[] buffer,
                        int index,
                        int length)
                 throws java.io.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 java.io.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:
        java.io.IOException - ???}???????????X?g???[???? ???o???G???[?????????????
      • skip

        public long skip​(long length)
                  throws java.io.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 java.io.InputStream
        Parameters:
        length - ???????????o?C?g???B
        Returns:
        ?????????????????????o?C?g???B
        Throws:
        java.io.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 java.io.InputStream
        Parameters:
        readLimit - ?}?[?N???u???????????E???o?C?g???B ?}???o?C?g?????L?????f?[?^?????? ?????????? reset()?????????????? ?\?????????B
      • reset

        public void reset()
                   throws java.io.IOException
        ???}???????????X?g???[???????????????u???????? mark() ???\?b?h???????o???????????????u???????????B
        Overrides:
        reset in class java.io.InputStream
        Throws:
        java.io.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 java.io.InputStream
        Returns:
        ?X?g???[???? mark() ?? reset() ?? ?T?|?[?g?????????? true?B
        ?T?|?[?g??????????? false?B
      • available

        public int available()
                      throws java.io.IOException
        ???}???????????X?g???[???????u???b?N??????? ?????????}???????????o?C?g?????????B
        Overrides:
        available in class java.io.InputStream
        Returns:
        ?u???b?N????????????o?????o?C?g???B
        Throws:
        java.io.IOException - ???}???????????X?g???[???? ???o???G???[?????????????
      • close

        public void close()
                   throws java.io.IOException
        ?}???????X?g???[????????A?g?p??????? ?S???????\?[?X???J???????B
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Overrides:
        close in class java.io.InputStream
        Throws:
        java.io.IOException - ???}???????????X?g???[???? ???o???G???[?????????????