/*
* $Header$
* $Revision: 982 $
* $Date: 2006-12-08 18:42:51 +1000 (Fri, 08 Dec 2006) $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003-2009 The JRDF Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* the JRDF Project (http://jrdf.sf.net/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The JRDF Project" and "JRDF" must not be used to endorse
* or promote products derived from this software without prior written
* permission. For written permission, please contact
* newmana@users.sourceforge.net.
*
* 5. Products derived from this software may not be called "JRDF"
* nor may "JRDF" appear in their names without prior written
* permission of the JRDF Project.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the JRDF Project. For more
* information on JRDF, please see <http://jrdf.sourceforge.net/>.
*
*/
package org.jrdf.parser.n3.parser;
import org.jrdf.parser.NamespaceListener;
import org.jrdf.parser.ntriples.parser.LiteralMatcher;
import org.jrdf.parser.ntriples.parser.NTripleUtil;
import org.jrdf.util.boundary.RegexMatcher;
import org.jrdf.util.boundary.RegexMatcherFactory;
import static org.jrdf.util.param.ParameterUtil.checkNotEmptyString;
import static org.jrdf.util.param.ParameterUtil.checkNotNull;
import java.io.Serializable;
import java.util.regex.Pattern;
public final class NamespaceAwareLiteralMatcherImpl implements LiteralMatcher, Serializable {
private static final long serialVersionUID = -1198268919417815649L;
private static final int LITERAL_VALUES_LENGTH = 3;
private Pattern pattern = Pattern.compile("\\\"([\\x20-\\x7E]*)\\\"" +
"(" +
"\\@(\\p{Lower}[\\-\\p{Alnum}]*)?|" +
"\\^\\^\\<([\\x20-\\x7E]+)\\>|" +
"\\^\\^(\\p{Alpha}[\\x20-\\x7E]*?):((\\p{Alpha}[\\x20-\\x7E]*)?)" +
")*\\p{Blank}*");
private static final int LITERAL_INDEX = 1;
private static final int LANGUAGE_INDEX = 3;
private static final int DATATYPE_URI_INDEX = 4;
private static final int DATATYPE_PREFIX_INDEX = 5;
private static final int DATATYPE_LOCAL_NAME_INDEX = 6;
private RegexMatcherFactory regexFactory;
private NTripleUtil nTripleUtil;
private NamespaceListener listener;
private NamespaceAwareLiteralMatcherImpl() {
}
public NamespaceAwareLiteralMatcherImpl(RegexMatcherFactory newRegexFactory, NTripleUtil newNTripleUtil,
NamespaceListener newListener) {
checkNotNull(newRegexFactory, newNTripleUtil);
regexFactory = newRegexFactory;
nTripleUtil = newNTripleUtil;
listener = newListener;
}
public void setPattern(String newPattern) {
pattern = Pattern.compile(newPattern);
}
public boolean matches(String s) {
checkNotEmptyString("s", s);
return regexFactory.createMatcher(pattern, s).matches();
}
public String[] parse(String s) {
checkNotEmptyString("s", s);
RegexMatcher matcher = regexFactory.createMatcher(pattern, s);
String[] values = new String[LITERAL_VALUES_LENGTH];
if (matcher.matches()) {
String ntriplesLiteral = matcher.group(LITERAL_INDEX);
values[0] = nTripleUtil.unescapeLiteral(ntriplesLiteral);
values[1] = matcher.group(LANGUAGE_INDEX);
values[2] = getDatatypeString(matcher);
}
return values;
}
private String getDatatypeString(RegexMatcher matcher) {
String result = null;
final String prefix = matcher.group(DATATYPE_PREFIX_INDEX);
final String fullURI = matcher.group(DATATYPE_URI_INDEX);
if (fullURI != null) {
result = fullURI;
} else if (prefix != null) {
result = listener.getFullURI(prefix) + matcher.group(DATATYPE_LOCAL_NAME_INDEX);
}
return result;
}
}