Package net.loomchild.segment.srx

Class TextManager

  • public class TextManager
extends java.lang.Object
    Represents text manager. Responsible for managing current text, reading more text from the reader and checking if there is more text left.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private int bufferLength  
      (package private) int nextCharacter  
      private java.io.Reader reader  
      private java.lang.CharSequence text  

    • Constructor Summary

      Constructors 
      Constructor Description
      TextManager​(java.io.Reader reader, int bufferLength)
      Creates text manager reading text from given reader.
      TextManager​(java.lang.CharSequence text)
      Creates text manager containing given text.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int getBufferLength()  
      java.lang.CharSequence getText()  
      boolean hasMoreText()  
      private void initText()
      Reads initial text from reader if it has not been initialized yet.
      private java.lang.String read​(int amount)
      Reads the given amount of characters and returns them as a string.
      private int read​(java.io.Reader reader, char[] buffer)
      Reads specified amount of characters.
      void readText​(int amount)
      Deletes given amount of characters from current character buffer and tries to read up to given amount of new characters and stores them in current character buffer.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • text

        private java.lang.CharSequence text

      • nextCharacter

        int nextCharacter

      • reader

        private java.io.Reader reader

      • bufferLength

        private int bufferLength

    • Constructor Detail

      • TextManager

        public TextManager​(java.lang.CharSequence text)
        Creates text manager containing given text. Reading more text is not possible when using this constructor.
        Parameters:
        text -

      • TextManager

        public TextManager​(java.io.Reader reader,
                   int bufferLength)
        Creates text manager reading text from given reader. Only specified amount of memory for buffer will be used. Managed text will never be longer than given buffer size. Text is not actually read until required (lazy initialization).
        Parameters:
        reader -
        bufferLength - read buffer size

    • Method Detail

      • getBufferLength

        public int getBufferLength()

      • getText

        public java.lang.CharSequence getText()
        Returns:
        current text

      • hasMoreText

        public boolean hasMoreText()
        Returns:
        true if more text can be read

      • readText

        public void readText​(int amount)
        Deletes given amount of characters from current character buffer and tries to read up to given amount of new characters and stores them in current character buffer.
        Parameters:
        amount - amount of characters to read
        Throws:
        java.lang.IllegalArgumentException - if hasMoreText() returns false or amount is greater than buffer size

      • initText

        private void initText()
        Reads initial text from reader if it has not been initialized yet.

      • read

        private java.lang.String read​(int amount)
        Reads the given amount of characters and returns them as a string. Updates nextCharacter by reading one additional character.
        Parameters:
        amount - amount to be read
        Returns:
        read characters as a string

      • read

        private int read​(java.io.Reader reader,
                 char[] buffer)
        Reads specified amount of characters. It is needed because when reading from console Reader.read(char[]) it returns after first end of line (probably it checks if characters are available).
        Parameters:
        reader - input
        buffer - buffer where read characters will be stored
        Returns:
        number of read characters