com.itextpdf.tool.xml.pipeline.end.PdfWriterPipeline Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of xmlworker Show documentation
Show all versions of xmlworker Show documentation
Parses XML to PDF, with CSS support, using iText
/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2019 iText Group NV
* Authors: Balder Van Camp, Emiel Ackermann, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.tool.xml.pipeline.end;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.log.Level;
import com.itextpdf.text.log.Logger;
import com.itextpdf.text.log.LoggerFactory;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.CustomContext;
import com.itextpdf.tool.xml.Pipeline;
import com.itextpdf.tool.xml.PipelineException;
import com.itextpdf.tool.xml.ProcessObject;
import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.WorkerContext;
import com.itextpdf.tool.xml.Writable;
import com.itextpdf.tool.xml.exceptions.LocaleMessages;
import com.itextpdf.tool.xml.pipeline.AbstractPipeline;
import com.itextpdf.tool.xml.pipeline.WritableElement;
import com.itextpdf.tool.xml.pipeline.ctx.MapContext;
/**
* This pipeline writes to a Document.
* @author redlab_b
*
*/
public class PdfWriterPipeline extends AbstractPipeline {
private static final Logger LOG = LoggerFactory.getLogger(PdfWriterPipeline.class);
private Document doc;
private PdfWriter writer;
/**
*/
public PdfWriterPipeline() {
super(null);
}
/**
* @param next the next pipeline if any.
*/
public PdfWriterPipeline(final Pipeline next) {
super(next);
}
/**
* @param doc the document
* @param writer the writer
*/
public PdfWriterPipeline(final Document doc, final PdfWriter writer) {
super(null);
this.doc = doc;
this.writer = writer;
continiously = true;
}
/**
* The key for the {@link Document} in the {@link MapContext} used as {@link CustomContext}.
*/
public static final String DOCUMENT = "DOCUMENT";
/**
* The key for the {@link PdfWriter} in the {@link MapContext} used as {@link CustomContext}.
*/
public static final String WRITER = "WRITER";
/**
* The key for the a boolean in the {@link MapContext} used as {@link CustomContext}. Setting to true enables swallowing of DocumentExceptions
*/
public static final String CONTINUOUS = "CONTINUOUS";
private Boolean continiously;
/* (non-Javadoc)
* @see com.itextpdf.tool.xml.pipeline.AbstractPipeline#init(com.itextpdf.tool.xml.WorkerContext)
*/
@Override
public Pipeline init(final WorkerContext context) throws PipelineException {
MapContext mc = new MapContext();
continiously = Boolean.TRUE;
mc.put(CONTINUOUS, continiously);
if (null != doc) {
mc.put(DOCUMENT, doc);
}
if (null != writer) {
mc.put(WRITER, writer);
}
context.put(getContextKey(), mc);
return super.init(context);
}
/**
* @param po
* @throws PipelineException
*/
private void write(final WorkerContext context, final ProcessObject po) throws PipelineException {
MapContext mp = getLocalContext(context);
if (po.containsWritable()) {
Document doc = (Document) mp.get(DOCUMENT);
boolean continuousWrite = (Boolean) mp.get(CONTINUOUS);
Writable writable = null;
while (null != (writable = po.poll())) {
if (writable instanceof WritableElement) {
for (Element e : ((WritableElement) writable).elements()) {
try {
if (!doc.add(e) && LOG.isLogging(Level.TRACE)) {
LOG.trace(String.format(
LocaleMessages.getInstance().getMessage(LocaleMessages.ELEMENT_NOT_ADDED),
e.toString()));
}
} catch (DocumentException e1) {
if (!continuousWrite) {
throw new PipelineException(e1);
} else {
LOG.error(
LocaleMessages.getInstance().getMessage(LocaleMessages.ELEMENT_NOT_ADDED_EXC),
e1);
}
}
}
}
}
}
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.pipeline.Pipeline#open(com.itextpdf.tool.
* xml.Tag, com.itextpdf.tool.xml.pipeline.ProcessObject)
*/
@Override
public Pipeline open(final WorkerContext context, final Tag t, final ProcessObject po) throws PipelineException {
write(context, po);
return getNext();
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.pipeline.Pipeline#content(com.itextpdf.tool
* .xml.Tag, java.lang.String, com.itextpdf.tool.xml.pipeline.ProcessObject)
*/
@Override
public Pipeline content(final WorkerContext context, final Tag currentTag, final String text, final ProcessObject po) throws PipelineException {
write(context, po);
return getNext();
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.pipeline.Pipeline#close(com.itextpdf.tool
* .xml.Tag, com.itextpdf.tool.xml.pipeline.ProcessObject)
*/
@Override
public Pipeline close(final WorkerContext context, final Tag t, final ProcessObject po) throws PipelineException {
write(context ,po);
return getNext();
}
/**
* The document to write to.
* @param document the Document
*/
public void setDocument(final Document document) {
this.doc = document;
}
/**
* The writer used to write to the document.
* @param writer the writer.
*/
public void setWriter(final PdfWriter writer) {
this.writer = writer;
}
}