Mercurial > hg > mpdl-group
view software/eXist/mpdl-modules/src/org/exist/xquery/modules/mpdltext/NormalizeChars.java @ 0:408254cf2f1d
Erstellung
author | Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de> |
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date | Wed, 24 Nov 2010 17:24:23 +0100 |
parents | |
children | 5df60f24e997 |
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/* * eXist Open Source Native XML Database: Extension module * Copyright (C) 2008 Josef Willenborg * jwillenborg@mpiwg-berlin.mpg.de * http://www.mpiwg-berlin.mpg.de * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * $Id: TextModule.java $ */ package org.exist.xquery.modules.mpdltext; import java.io.IOException; import java.io.Reader; import java.io.StringReader; import org.exist.dom.QName; import org.exist.xquery.BasicFunction; import org.exist.xquery.Cardinality; import org.exist.xquery.FunctionSignature; import org.exist.xquery.XPathException; import org.exist.xquery.XQueryContext; import org.exist.xquery.value.Sequence; import org.exist.xquery.value.SequenceType; import org.exist.xquery.value.StringValue; import org.exist.xquery.value.Type; import org.exist.xquery.value.ValueSequence; import org.xml.sax.InputSource; import org.xml.sax.SAXException; import org.xml.sax.XMLReader; import com.sun.org.apache.xerces.internal.parsers.SAXParser; import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException; import de.mpg.mpiwg.berlin.mpdl.lt.doc.NormalizeCharsContentHandler; /** * @author Josef Willenborg (jwillenborg@mpiwg-berlin.mpg.de) */ public class NormalizeChars extends BasicFunction { public final static FunctionSignature signature = new FunctionSignature( new QName("normalizeChars", MPDLTextModule.NAMESPACE_URI, MPDLTextModule.PREFIX), "A function which normalize characters of the given xml fragment string of the given language and normalize function." + "Result is xml fragment where all content text is replaced by the normalized string. ", new SequenceType[] { new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE), new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE), new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE)}, new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE)); public NormalizeChars(XQueryContext context) { super(context, signature); } public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException { Sequence normalizeFunctionSeq = args[0]; Sequence languageSeq = args[1]; Sequence xmlFragmentSeq = args[2]; String normalizeFunctions = ""; // default String language = ""; String xmlFragment = ""; if (xmlFragmentSeq.isEmpty() || languageSeq.isEmpty()) return Sequence.EMPTY_SEQUENCE; normalizeFunctions = normalizeFunctionSeq.getStringValue(); String[] normalizeFunctionsArray = normalizeFunctions.split(","); language = languageSeq.getStringValue(); xmlFragment = xmlFragmentSeq.getStringValue(); String outputXmlFragment = null; try { NormalizeCharsContentHandler normCharsContentHandler = new NormalizeCharsContentHandler(normalizeFunctionsArray, language); XMLReader xmlParser = new SAXParser(); xmlParser.setContentHandler(normCharsContentHandler); Reader stringReaderXmlFragment = new StringReader(xmlFragment); InputSource input = new InputSource(stringReaderXmlFragment); xmlParser.parse(input); outputXmlFragment = normCharsContentHandler.getXmlFragment(); } catch (ApplicationException e) { throw new XPathException(e); } catch (IOException e) { throw new XPathException(e); } catch (SAXException e) { throw new XPathException(e); } ValueSequence result = new ValueSequence(); result.add(new StringValue(outputXmlFragment)); return result; } }