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## com.compoze.util
Class TextLineFilterWriter

    java.lang.Object
      java.io.Writer
          java.io.FilterWriter
              com.compoze.util.TextLineFilterWriter

Direct Known Subclasses:
  HtmlLinkFilterWriter, SubstitutionWriter

public abstract class TextLineFilterWriter
extends java.io.FilterWriter

This class is a filter writer that allows subclasses to process the text that comes through a line at a time. This makes it easier for filter writers that wish to process text to do their work. Subclasses must only implement filterLine() to do their work. As data is written to this writer, it is buffered until a full line of text is obtained. A line is considered to be any amount of text followed by a newline, or a carriage return then a newline. Once a full line of text is obtained filterLine() is called, and the result is written to the underlying reader. The platform's default line separator is always used. flush() must be called to insure that any remaining text is written. Since this class works on text line-by-line it is less appropriate for classes that need to filter multiple lines.

Field Summary

Fields inherited from class java.io.FilterWriter
`out`

Fields inherited from class java.io.Writer
`lock`

Constructor Summary
`TextLineFilterWriter(java.io.Writer out)` Constructor.

Method Summary
`protected abstract java.lang.String` | `filterLine(java.lang.String sLine)` Filter a line of text.
`void` | `flush()` Flush the buffer and the underlying output writer.
`void` | `write(char[] cBuffer, int iOffset, int iLength)` Write an array of characters.
`void` | `write(int iChar)` Write a single character.
`void` | `write(java.lang.String sString, int iOffset, int iLength)` Write a portion of a string.

Methods inherited from class java.io.FilterWriter
`close`

Methods inherited from class java.io.Writer
`write, write`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### TextLineFilterWriter

    public TextLineFilterWriter(java.io.Writer out)

  Constructor.

Parameters:
  `out` - the underlying writer

Method Detail

### write

    public void write(char[] cBuffer,
                      int iOffset,
                      int iLength)
               throws java.io.IOException

  Write an array of characters.

  Parameters:
    `cBuffer` - the character buffer
    `iOffset` - the offset in the buffer
    `iLength` - the length of the buffer
  Throws:
    `java.io.IOException` - if an i/o exception occurred

### write

    public void write(int iChar)
               throws java.io.IOException

  Write a single character.

  Parameters:
    `iChar` - the character to write
  Throws:
    `java.io.IOException` - if an i/o exception occurred

### write

    public void write(java.lang.String sString,
                      int iOffset,
                      int iLength)
               throws java.io.IOException

  Write a portion of a string.

  Parameters:
    `sString` - the string to write
    `iOffset` - the offset in the buffer
    `iLength` - the length of the buffer
  Throws:
    `java.io.IOException` - if an i/o exception occurred

### flush

    public void flush()
               throws java.io.IOException

  Flush the buffer and the underlying output writer.

  Throws:
    `java.io.IOException` - if an i/o exception occurred

### filterLine

    protected abstract java.lang.String filterLine(java.lang.String sLine)

  Filter a line of text. Subclasses must implement this to do their work.

  Parameters:
    `sLine` - the line to write (does not include line termination characters)
  Returns:
    the filtered line

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