org.apache.lucene.analysis.compound.hyphenation
Class PatternParser

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      org.apache.lucene.analysis.compound.hyphenation.PatternParser

All Implemented Interfaces:

PatternConsumer, ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class PatternParser
extends DefaultHandler
implements PatternConsumer

A SAX document handler to read and parse hyphenation patterns from a XML file. This class has been taken from the Apache FOP project (http://xmlgraphics.apache.org/fop/). They have been slightly modified.

Constructor Summary

PatternParser()

PatternParser(PatternConsumer consumer)

Method Summary

void	addClass(String c) Add a character class.
void	addException(String w, ArrayList<Object> e) Add a hyphenation exception.
void	addPattern(String p, String v) Add hyphenation patterns.
void	characters(char[] ch, int start, int length)
void	endElement(String uri, String local, String raw)
protected String	getExceptionWord(ArrayList<?> ex)
protected static String	getInterletterValues(String pat)
protected static String	getPattern(String word)
static void	main(String[] args)
protected ArrayList<Object>	normalizeException(ArrayList<?> ex)
void	parse(File file) Parses a hyphenation pattern file.
void	parse(InputSource source) Parses a hyphenation pattern file.
void	parse(String filename) Parses a hyphenation pattern file.
protected String	readToken(StringBuffer chars)
InputSource	resolveEntity(String publicId, String systemId)
void	setConsumer(PatternConsumer consumer)
void	startElement(String uri, String local, String raw, Attributes attrs)

Methods inherited from class org.xml.sax.helpers.DefaultHandler

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Constructor Detail

PatternParser

public PatternParser()
              throws HyphenationException

Throws:

HyphenationException

PatternParser

public PatternParser(PatternConsumer consumer)
              throws HyphenationException

Throws:

HyphenationException

Method Detail

setConsumer

public void setConsumer(PatternConsumer consumer)

parse

public void parse(String filename)
           throws HyphenationException

Parses a hyphenation pattern file.

Parameters:

filename - the filename

Throws:

HyphenationException - In case of an exception while parsing

parse

public void parse(File file)
           throws HyphenationException

Parses a hyphenation pattern file.

Parameters:

file - the pattern file

Throws:

HyphenationException - In case of an exception while parsing

parse

public void parse(InputSource source)
           throws HyphenationException

Parses a hyphenation pattern file.

Parameters:

source - the InputSource for the file

Throws:

HyphenationException - In case of an exception while parsing

readToken

protected String readToken(StringBuffer chars)

getPattern

protected static String getPattern(String word)

normalizeException

protected ArrayList<Object> normalizeException(ArrayList<?> ex)

getExceptionWord

protected String getExceptionWord(ArrayList<?> ex)

getInterletterValues

protected static String getInterletterValues(String pat)

resolveEntity

public InputSource resolveEntity(String publicId,
                                 String systemId)

Specified by:

resolveEntity in interface EntityResolver

Overrides:

resolveEntity in class DefaultHandler

startElement

public void startElement(String uri,
                         String local,
                         String raw,
                         Attributes attrs)

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

See Also:

ContentHandler.startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)

endElement

public void endElement(String uri,
                       String local,
                       String raw)

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

See Also:

ContentHandler.endElement(java.lang.String, java.lang.String, java.lang.String)

characters

public void characters(char[] ch,
                       int start,
                       int length)

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

See Also:

ContentHandler.characters(char[], int, int)

addClass

public void addClass(String c)

Description copied from interface: PatternConsumer

Add a character class. A character class defines characters that are considered equivalent for the purpose of hyphenation (e.g. "aA"). It usually means to ignore case.

Specified by:

addClass in interface PatternConsumer

Parameters:

c - character group

addException

public void addException(String w,
                         ArrayList<Object> e)

Description copied from interface: PatternConsumer

Add a hyphenation exception. An exception replaces the result obtained by the algorithm for cases for which this fails or the user wants to provide his own hyphenation. A hyphenatedword is a vector of alternating String's and Hyphen instances

Specified by:

addException in interface PatternConsumer

addPattern

public void addPattern(String p,
                       String v)

Description copied from interface: PatternConsumer

Add hyphenation patterns.

Specified by:

addPattern in interface PatternConsumer

Parameters:

p - the pattern

v - interletter values expressed as a string of digit characters.

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception