Mercurial > hg > mpdl-group

comparison software/eXist/mpdl-modules/src/org/exist/xquery/modules/mpdldoc/Html2Pdf.java @ 0:408254cf2f1d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Erstellung
author Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
date Wed, 24 Nov 2010 17:24:23 +0100
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:408254cf2f1d
1 /*
2 * eXist Open Source Native XML Database: Extension module
3 * Copyright (C) 2008 Josef Willenborg
4 * jwillenborg@mpiwg-berlin.mpg.de
5 * http://www.mpiwg-berlin.mpg.de
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 * $Id: $
22 */
23 package org.exist.xquery.modules.mpdldoc;
24
25 import org.exist.dom.QName;
26 import org.exist.storage.serializers.Serializer;
27 import org.exist.xquery.BasicFunction;
28 import org.exist.xquery.Cardinality;
29 import org.exist.xquery.FunctionSignature;
30 import org.exist.xquery.XPathException;
31 import org.exist.xquery.XQueryContext;
32 import org.exist.xquery.value.Base64Binary;
33 import org.exist.xquery.value.NodeValue;
34 import org.exist.xquery.value.Sequence;
35 import org.exist.xquery.value.SequenceType;
36 import org.exist.xquery.value.Type;
37 import org.xml.sax.SAXException;
38
39 import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
40 import de.mpg.mpiwg.berlin.mpdl.util.MpdlITextRenderer;
41 import de.mpg.mpiwg.berlin.mpdl.util.StringUtilEscapeChars;
42
43 /**
44 * @author Josef Willenborg (jwillenborg@mpiwg-berlin.mpg.de)
45 */
46 public class Html2Pdf extends BasicFunction {
47
48 public final static FunctionSignature signature =
49 new FunctionSignature(
50 new QName("html2pdf", MPDLDocModule.NAMESPACE_URI, MPDLDocModule.PREFIX),
51 "A function which converts the input HTML fragment to pdf",
52 new SequenceType[] {
53 new SequenceType(Type.NODE, Cardinality.EXACTLY_ONE),
54 new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE),
55 new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE),
56 new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE),
57 new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE),
58 new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE)
59 },
60 new SequenceType(Type.BYTE, Cardinality.EXACTLY_ONE));
61
62 public Html2Pdf(XQueryContext context) {
63 super(context, signature);
64 }
65
66 public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
67 try {
68 Sequence firstSeq = args[0];
69 Sequence secondSeq = args[1];
70 Sequence thirdSeq = args[2];
71 Sequence fourthSeq = args[3];
72 Sequence fifthSeq = args[4];
73 Sequence sixthSeq = args[5];
74 if (firstSeq.isEmpty() || secondSeq.isEmpty() || thirdSeq.isEmpty() || fourthSeq.isEmpty() || fifthSeq.isEmpty() || sixthSeq.isEmpty())
75 return Sequence.EMPTY_SEQUENCE;
76 NodeValue nodeValue= (NodeValue) firstSeq.itemAt(0);
77 Serializer serializer = context.getBroker().getSerializer();
78 serializer.reset();
79 String nodeValueStr = serializer.serialize(nodeValue);
80
81 String language = secondSeq.getStringValue();
82 String topLeftStrTmp = thirdSeq.getStringValue();
83 String topRightStrTmp = fourthSeq.getStringValue();
84 String bottomLeftStrTmp = fifthSeq.getStringValue();
85 String bottomRightStrTmp = sixthSeq.getStringValue();
86 String topLeftStr = "&quot;" + StringUtilEscapeChars.deresolveXmlEntities(topLeftStrTmp) + "&quot;";
87 String topRightStr = "&quot;" + StringUtilEscapeChars.deresolveXmlEntities(topRightStrTmp) + "&quot;";
88 String bottomLeftStr = "&quot;" + StringUtilEscapeChars.deresolveXmlEntities(bottomLeftStrTmp) + "&quot;";
89 String bottomRightStr = "&quot;" + StringUtilEscapeChars.deresolveXmlEntities(bottomRightStrTmp) + "&quot;";
90
91 MpdlITextRenderer mpdlRenderer = MpdlITextRenderer.getInstance();
92 String singlePageStr = nodeValueStr.replaceAll("class=\"page\">", "class=\"singlePage\">");
93 byte[] pdfBytes = mpdlRenderer.createPdf(singlePageStr, language, topLeftStr, topRightStr, bottomLeftStr, bottomRightStr);
94
95 return new Base64Binary(pdfBytes);
96 } catch (ApplicationException e) {
97 throw new XPathException(e.getMessage());
98 } catch (SAXException e) {
99 throw new XPathException(e);
100 }
101 }
102 }