superwaba.ext.xplat.util.xml
Class XmlLiteParser

java.lang.Object
  |
  +--superwaba.ext.xplat.util.xml.XmlLiteParser

Direct Known Subclasses:

HttpXmlLiteParser

public class XmlLiteParser

extends Object

This is a fast and simple parser for a lite version of XML format. You can use this parser with SuperWaba VM to parse data from an open Stream.

The parser looks for:

• start-tag name,
• end-tag name,
• attribute name,
• attribute value,
• content between a start-tag and an end-tag.

When the parser finds these elements it calls respectively:

• foundStartTagName();
• foundEndTagName();
• foundAttributeName();
• foundAttributeValue();
• foundContent();

The parsing algorithm is based on DFA (Deterministic Finite Automata) theory and Regular Expression theory. See the following schema:

In order to use this parser you need to extend the XmlListener class and override the above methods. To start parsing, call the method parse(byte inputBytes, int length).

See also superwaba/examples/util/xml.

Field Summary

protected XmlListener	listener Listener of this parser
protected int	pos pos in buffer
protected int	state current state

Constructor Summary

XmlLiteParser(XmlListener listener)

Method Summary

void	parse(byte[] input, int size) This method parses the given array of bytes.
protected void	parseBuffer(byte[] input, int size) This method does the actual parsing and call backs working for the current values of pos, len, start and state.

Methods inherited from class java.lang.Object

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

Field Detail

listener

protected XmlListener listener

Listener of this parser

state

protected int state

current state

pos

protected int pos

pos in buffer

Constructor Detail

XmlLiteParser

public XmlLiteParser(XmlListener listener)

Method Detail

parse

public void parse(byte[] input,
                  int size)
           throws ParserException

This method parses the given array of bytes. The algorithm is based on DFA (Deterministic Finite Automata) theory and Regular Expression theory.

Parameters:

input - The input byte array.

size - The size of bytes to be parsed. Normally should be input.length

parseBuffer

protected void parseBuffer(byte[] input,
                           int size)
                    throws ParserException

This method does the actual parsing and call backs working for the current values of pos, len, start and state. It is called by parse(byte[],int) and may be called by derived XmlLiteParsers. atn

Parameters:

size -

Throws:

ParserException -