Package org.apache.regexp

Class ReaderCharacterIterator

  • All Implemented Interfaces:
    CharacterIterator
    public final class ReaderCharacterIterator
extends java.lang.Object
implements CharacterIterator
    Encapsulates java.io.Reader as CharacterIterator
    Version:
    CVS $Id: ReaderCharacterIterator.java 518156 2007-03-14 14:31:26Z vgritsenko $
    Author:
    Ales Novak

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.lang.StringBuffer buff
      Buffer of read chars
      private boolean closed
      read end?
      private java.io.Reader reader
      Underlying reader

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      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 beginIndex)  
      java.lang.String substring​(int beginIndex, int endIndex)  

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • reader

        private final java.io.Reader reader
        Underlying reader

      • 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:
        reader - a Reader, which is parsed

    • Method Detail

      • substring

        public java.lang.String substring​(int beginIndex,
                                  int endIndex)
        Specified by:
        substring in interface CharacterIterator
        Returns:
        a substring

      • substring

        public java.lang.String substring​(int beginIndex)
        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
        Throws:
        java.io.IOException

      • readAll

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

      • ensure

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