org.apache.regexp
Class ReaderCharacterIterator

java.lang.Object
  |
  +--org.apache.regexp.ReaderCharacterIterator
All Implemented Interfaces:
CharacterIterator

public final class ReaderCharacterIterator
extends java.lang.Object
implements CharacterIterator

Encapsulates InputStream, ...

Author:
Ales Novak

Field Summary
private  java.lang.StringBuffer buff
          Buffer of read chars
private  boolean closed
          read end?
private  java.io.Reader reader
          Underlying is
 
Constructor Summary
ReaderCharacterIterator(java.io.Reader reader)
           
 
Method Summary
 char charAt(int pos)
           
private  void ensure(int idx)
          Reads chars up to the idx
 boolean isEnd(int pos)
           
private  int read(int n)
          Reads n characters from the stream and appends them to the buffer
private  void readAll()
          Reads rest of the stream.
 java.lang.String substring(int offset)
           
 java.lang.String substring(int offset, int length)
           
 
Methods inherited from class java.lang.Object
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait
 

Field Detail

reader

private final java.io.Reader reader
Underlying is

buff

private final java.lang.StringBuffer buff
Buffer of read chars

closed

private boolean closed
read end?
Constructor Detail

ReaderCharacterIterator

public ReaderCharacterIterator(java.io.Reader reader)
Parameters:
is - an Reader, which is parsed
Method Detail

substring

public java.lang.String substring(int offset,
                                  int length)
Specified by:
substring in interface CharacterIterator
Returns:
a substring

substring

public java.lang.String substring(int offset)
Specified by:
substring in interface CharacterIterator
Returns:
a substring

charAt

public char charAt(int pos)
Specified by:
charAt in interface CharacterIterator
Returns:
a character at the specified position.

isEnd

public boolean isEnd(int pos)
Specified by:
isEnd in interface CharacterIterator
Returns:
true iff if the specified index is after the end of the character stream

read

private int read(int n)
          throws java.io.IOException
Reads n characters from the stream and appends them to the buffer

readAll

private void readAll()
              throws java.io.IOException
Reads rest of the stream.

ensure

private void ensure(int idx)
             throws java.io.IOException
Reads chars up to the idx


Copyright © 2000 Apache Software Foundation. All Rights Reserved.