com.inet.html.parser
Class PushReader

java.lang.Object
  java.io.Reader
      java.io.BufferedReader
          com.inet.html.parser.PushReader

All Implemented Interfaces:

java.io.Closeable, java.lang.Readable

public class PushReader
extends java.io.BufferedReader

Constructor Summary

PushReader(java.io.Reader in)
Creates the reader for an input stream

Method Summary

void	checkForUtf8Prefix() Check if the document start with an UTF8 prefix.
void	commit() Resets the rollback buffer and deactivates the transaction mode
void	push(char ch) Return a character to the stream.
int	read()
char	readQuotedChar() Read a html encoded character
void	rollBack() Does a rollback for all characters fetched since the transaction was started.
void	shutDown() Shuts down the stream.
void	startTransaction() Activates the transaction mode, which will buffer all characters read.

Methods inherited from class java.io.BufferedReader

close, mark, markSupported, read, readLine, ready, reset, skip

Methods inherited from class java.io.Reader

read, read

Methods inherited from class java.lang.Object

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

Constructor Detail

PushReader

public PushReader(java.io.Reader in)

Creates the reader for an input stream

Parameters:

in - the input stream to read from, must not be null

Method Detail

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.BufferedReader

Throws:

java.io.IOException

push

public void push(char ch)

Return a character to the stream.

Parameters:

ch - the character

readQuotedChar

public char readQuotedChar()

Read a html encoded character

Returns:

the char or & if it is not a valid encoding

checkForUtf8Prefix

public void checkForUtf8Prefix()
                        throws java.io.IOException,
                               javax.swing.text.ChangedCharSetException

Check if the document start with an UTF8 prefix. This are 3 Bytes with an ASCII code page. With UTF8 this are a single character 0xFEFF.

Throws:

java.io.IOException - If an I/O error occurs

javax.swing.text.ChangedCharSetException - if the prefix was find and the document is not allready UTF8 encoded

startTransaction

public void startTransaction()

Activates the transaction mode, which will buffer all characters read. These chars can be re-enqueued to the reader if the transaction fails.

rollBack

public void rollBack()

Does a rollback for all characters fetched since the transaction was started.

commit

public void commit()

Resets the rollback buffer and deactivates the transaction mode

shutDown

public void shutDown()
              throws java.io.IOException

Shuts down the stream. This causes a close on the underlying stream. The Reader will return -1 on read from now on without throwing an IO-Exception.

Throws:

java.io.IOException - thrown, if the close fails