Class PatternParser

java.lang.Object

org.xml.sax.helpers.DefaultHandler

com.itextpdf.layout.hyphenation.PatternParser

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class PatternParser
extends DefaultHandler

A SAX document handler to read and parse hyphenation patterns from a XML file.

This work was authored by Carlos Villegas (cav@uniscope.co.jp).

Field Summary

Fields

Modifier and Type	Field	Description
private IPatternConsumer	consumer
private int	currElement
(package private) static final int	ELEM_CLASSES
(package private) static final int	ELEM_EXCEPTIONS
(package private) static final int	ELEM_HYPHEN
(package private) static final int	ELEM_PATTERNS
private String	errMsg
private ArrayList	exception
private boolean	hasClasses
private char	hyphenChar
private XMLReader	parser
private StringBuilder	token

Constructor Summary

Constructors

Modifier	Constructor	Description
private	PatternParser()	Construct a pattern parser.
	PatternParser(IPatternConsumer consumer)	Construct a pattern parser.

Method Summary

Modifier and Type	Method	Description
void	characters(char[] ch, int start, int length)
(package private) static XMLReader	createParser()	Creates a SAX parser using JAXP
void	endElement(String uri, String local, String raw)
void	error(SAXParseException ex)
void	fatalError(SAXParseException ex)
private String	getExceptionWord(ArrayList ex)
protected void	getExternalClasses()
private static String	getInterletterValues(String pat)
private String	getLocationString(SAXParseException ex)	Returns a string of the location.
private static String	getPattern(String word)
private ArrayList	normalizeException(ArrayList ex)
void	parse(InputStream stream, String name)	Parses a hyphenation pattern file.
void	parse(String filename)	Parses a hyphenation pattern file.
private String	readToken(StringBuilder chars)
void	startElement(String uri, String local, String raw, Attributes attrs)
void	warning(SAXParseException ex)

Methods inherited from class DefaultHandler

endDocument, endPrefixMapping, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl

Methods inherited from class Object

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

Methods inherited from interface ContentHandler

declaration

Field Details

parser

private XMLReader parser

currElement

private int currElement

consumer

private IPatternConsumer consumer

token

private StringBuilder token

exception

private ArrayList exception

hyphenChar

private char hyphenChar

errMsg

private String errMsg

hasClasses

private boolean hasClasses

ELEM_CLASSES

static final int ELEM_CLASSES

See Also:

• Constant Field Values

ELEM_EXCEPTIONS

static final int ELEM_EXCEPTIONS

See Also:

• Constant Field Values

ELEM_PATTERNS

static final int ELEM_PATTERNS

See Also:

• Constant Field Values

ELEM_HYPHEN

static final int ELEM_HYPHEN

See Also:

• Constant Field Values

Constructor Details

PatternParser

private PatternParser()

Construct a pattern parser.

PatternParser

public PatternParser(IPatternConsumer consumer)

Construct a pattern parser.

Parameters:

consumer - a pattern consumer

Method Details

parse

public void parse(String filename)
           throws HyphenationException,
IOException

Parses a hyphenation pattern file.

Parameters:

filename - the filename

Throws:

HyphenationException - In case of an exception while parsing

FileNotFoundException - If the specified file is not found

IOException

parse

public void parse(InputStream stream,
 String name)
           throws HyphenationException

Parses a hyphenation pattern file.

Parameters:

stream - the InputStream for the file

name - unique key representing country-language combination

Throws:

HyphenationException - In case of an exception while parsing

createParser

static XMLReader createParser()

Creates a SAX parser using JAXP

Returns:

the created SAX parser

readToken

private String readToken(StringBuilder chars)

getPattern

private static String getPattern(String word)

normalizeException

private ArrayList normalizeException(ArrayList ex)

getExceptionWord

private String getExceptionWord(ArrayList ex)

getInterletterValues

private static String getInterletterValues(String pat)

getExternalClasses

protected void getExternalClasses()
                           throws SAXException

Throws:

SAXException - if not caught

startElement

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

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException - if parsing of hyphenation classes resource xml has failed.

endElement

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

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

characters

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

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

warning

public void warning(SAXParseException ex)

Specified by:

warning in interface ErrorHandler

Overrides:

warning in class DefaultHandler

error

public void error(SAXParseException ex)

Specified by:

error in interface ErrorHandler

Overrides:

error in class DefaultHandler

fatalError

public void fatalError(SAXParseException ex)
                throws SAXException

Specified by:

fatalError in interface ErrorHandler

Overrides:

fatalError in class DefaultHandler

Throws:

SAXException

getLocationString

private String getLocationString(SAXParseException ex)

Returns a string of the location.