Package org.codehaus.groovy.util

Class CharSequenceReader

java.lang.Object
java.io.Reader
org.codehaus.groovy.util.CharSequenceReader
All Implemented Interfaces:
Closeable, Serializable, AutoCloseable, Readable
public class CharSequenceReader
extends Reader
implements Serializable
Reader implementation that can read from String, StringBuffer, StringBuilder, CharBuffer or GString.

Note: Supports mark(int) and reset().

Note: This class is mostly a copy from Commons IO and is intended for internal Groovy usage only. It may be deprecated and removed from Groovy at a faster pace than other classes. If you need this functionality in your Groovy programs, we recommend using the Commons IO equivalent directly.

See Also:
Serialized Form

  • Field Summary

    Fields inherited from class java.io.Reader

    lock

  • Constructor Summary

    Constructors 
    Constructor Description
    CharSequenceReader​(CharSequence charSequence)
    Construct a new instance with the specified character sequence.

  • Method Summary

    Modifier and Type Method Description
    void close()
    Close resets the reader back to the start and removes any marked position.
    void mark​(int readAheadLimit)
    Mark the current position.
    boolean markSupported()
    Mark is supported (returns true).
    int read()
    Read a single character.
    int read​(char[] array, int offset, int length)
    Read the sepcified number of characters into the array.
    void reset()
    Reset the reader to the last marked position (or the beginning if mark has not been called).
    long skip​(long n)
    Skip the specified number of characters.
    String toString()
    Return a String representation of the underlying character sequence.

    Methods inherited from class java.io.Reader

    nullReader, read, read, ready, transferTo

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • CharSequenceReader

      public CharSequenceReader​(CharSequence charSequence)
      Construct a new instance with the specified character sequence.
      Parameters:
      charSequence - The character sequence, may be null

  • Method Details

    • close

      public void close()
      Close resets the reader back to the start and removes any marked position.
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Closeable
      Specified by:
      close in class Reader

    • mark

      public void mark​(int readAheadLimit)
      Mark the current position.
      Overrides:
      mark in class Reader
      Parameters:
      readAheadLimit - ignored

    • markSupported

      public boolean markSupported()
      Mark is supported (returns true).
      Overrides:
      markSupported in class Reader
      Returns:
      true

    • read

      public int read()
      Read a single character.
      Overrides:
      read in class Reader
      Returns:
      the next character from the character sequence or -1 if the end has been reached.

    • read

      public int read​(char[] array, int offset, int length)
      Read the sepcified number of characters into the array.
      Specified by:
      read in class Reader
      Parameters:
      array - The array to store the characters in
      offset - The starting position in the array to store
      length - The maximum number of characters to read
      Returns:
      The number of characters read or -1 if there are no more

    • reset

      public void reset()
      Reset the reader to the last marked position (or the beginning if mark has not been called).
      Overrides:
      reset in class Reader

    • skip

      public long skip​(long n)
      Skip the specified number of characters.
      Overrides:
      skip in class Reader
      Parameters:
      n - The number of characters to skip
      Returns:
      The actual number of characters skipped

    • toString

      public String toString()
      Return a String representation of the underlying character sequence.
      Overrides:
      toString in class Object
      Returns:
      The contents of the character sequence