Content of file XsltMacroFilter.java.html
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../../jacoco-resources/report.gif" type="image/gif"/><title>XsltMacroFilter.java</title><link rel="stylesheet" href="../../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../../index.html" class="el_report">NorthernWind :: Frontend :: Components :: HTML Template</a> > <a href="../index.html" class="el_bundle">it-tidalwave-northernwind-core-default</a> > <a href="index.source.html" class="el_package">it.tidalwave.northernwind.core.impl.filter</a> > <span class="el_source">XsltMacroFilter.java</span></div><h1>XsltMacroFilter.java</h1><pre class="source lang-java linenums">/*
* #%L
* *********************************************************************************************************************
*
* NorthernWind - lightweight CMS
* http://northernwind.tidalwave.it - git clone https://bitbucket.org/tidalwave/northernwind-src.git
* %%
* Copyright (C) 2011 - 2023 Tidalwave s.a.s. (http://tidalwave.it)
* %%
* *********************************************************************************************************************
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* *********************************************************************************************************************
*
*
* *********************************************************************************************************************
* #L%
*/
package it.tidalwave.northernwind.core.impl.filter;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import javax.annotation.Nonnull;
import javax.inject.Inject;
import javax.inject.Provider;
import java.util.Optional;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.URIResolver;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamSource;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.context.ApplicationContext;
import org.springframework.core.annotation.Order;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import it.tidalwave.northernwind.core.model.Resource;
import it.tidalwave.northernwind.core.model.ResourceFile;
import it.tidalwave.northernwind.core.model.SiteProvider;
import it.tidalwave.northernwind.core.model.Template.Aggregate;
import it.tidalwave.northernwind.core.impl.model.Filter;
import lombok.extern.slf4j.Slf4j;
import static org.springframework.core.Ordered.HIGHEST_PRECEDENCE;
import static it.tidalwave.northernwind.core.model.Resource._Resource_;
import static it.tidalwave.northernwind.core.model.Template.Aggregates.toAggregates;
/***********************************************************************************************************************
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
<span class="fc" id="L72">@Configurable @Order(HIGHEST_PRECEDENCE) @Slf4j</span>
<span class="pc bpc" id="L73" title="9 of 18 branches missed.">public class XsltMacroFilter implements Filter</span>
{
private static final String XSLT_TEMPLATES_PATH = "/XsltTemplates/.*";
private static final String DOCTYPE_HTML = "<!DOCTYPE html>";
@Inject
private ApplicationContext context;
@Inject
private DocumentBuilderFactory factory;
@Inject
private TransformerFactory transformerFactory;
@Inject
private Provider<SiteProvider> siteProvider;
<span class="pc bpc" id="L91" title="2 of 4 branches missed."> private String xslt = "";</span>
private volatile boolean initialized;
private Method serializerMethod;
/*******************************************************************************************************************
*
******************************************************************************************************************/
// FIXME: this should be shared between instances
| this should be shared between instances | |
private void initialize()
{
<span class="fc" id="L103"> log.info("Retrieving XSLT templates");</span>
<span class="fc" id="L104"> final var site = siteProvider.get().getSite();</span>
<span class="fc" id="L105"> final var macros = site.find(_Resource_).withRelativePath(XSLT_TEMPLATES_PATH)</span>
<span class="fc" id="L106"> .stream()</span>
<span class="fc" id="L107"> .map(Resource::getFile)</span>
<span class="fc" id="L108"> .map(f -> Aggregate.of("body", asText(f)).with("name", f.getPath()))</span>
<span class="fc" id="L109"> .collect(toAggregates("macros"));</span>
<span class="fc" id="L110"> xslt = site.getTemplate(getClass(), Optional.empty(), "XsltTemplate.xslt").render(macros);</span>
<span class="fc" id="L111"> log.trace(">>>> xslt: {}", xslt);</span>
try
{
<span class="fc" id="L115"> final var clazz = Thread.currentThread().getContextClassLoader().loadClass(</span>
"it.tidalwave.northernwind.core.impl.util.XhtmlMarkupSerializerDecoupler");
<span class="fc" id="L117"> serializerMethod = clazz.getMethod("serialize", Node.class, StringWriter.class);</span>
}
<span class="nc" id="L119"> catch (ClassNotFoundException | NoSuchMethodException e)</span>
{
<span class="nc" id="L121"> throw new RuntimeException(e);</span>
<span class="fc" id="L122"> }</span>
<span class="fc" id="L123"> }</span>
/*******************************************************************************************************************
*
******************************************************************************************************************/
@Override @Nonnull
public String filter (@Nonnull final String text, @Nonnull final String mimeType)
{
<span class="fc bfc" id="L131" title="All 2 branches covered."> if (!"application/xhtml+xml".equals(mimeType))</span>
{
<span class="fc" id="L133"> log.debug("Cannot filter resources not in XHTML: {}", mimeType);</span>
<span class="fc" id="L134"> return text;</span>
}
// FIXME: buggy and cumbersome
<span class="pc bpc" id="L138" title="1 of 2 branches missed."> if (!initialized)</span>
{
<span class="fc" id="L140"> synchronized (this)</span>
{
<span class="pc bpc" id="L142" title="1 of 2 branches missed."> if (!initialized)</span>
{
<span class="fc" id="L144"> initialize();</span>
<span class="fc" id="L145"> initialized = true;</span>
}
<span class="fc" id="L147"> }</span>
}
try
{
<span class="fc" id="L152"> final var result = new DOMResult();</span>
<span class="fc" id="L153"> final var transformer = createTransformer();</span>
// Fix for NW-100
<span class="fc" id="L155"> transformer.transform(new DOMSource(stringToNode(text.replace("xml:lang", "xml_lang"))), result);</span>
<span class="fc" id="L157"> final var stringWriter = new StringWriter();</span>
<span class="fc bfc" id="L159" title="All 2 branches covered."> if (text.startsWith(DOCTYPE_HTML))</span>
{
<span class="fc" id="L161"> stringWriter.append(DOCTYPE_HTML).append("\n");</span>
}
// Fix for NW-96
// This must be accessed by reflection because the JDK 11+ compiler with --source 11 refuses to compile
// stuff that depends on com.sun.* classes.
<span class="fc" id="L167"> serializerMethod.invoke(null, result.getNode(), stringWriter);</span>
<span class="fc" id="L168"> return stringWriter.toString().replace("xml_lang", "xml:lang").replace(" xmlns=\"\"", ""); // FIXME:</span>
}
<span class="nc" id="L170"> catch (SAXParseException e)</span>
{
<span class="nc" id="L172"> log.error("XML parse error: {} at l{}:c{}", e.getMessage(), e.getLineNumber(), e.getColumnNumber());</span>
<span class="nc" id="L173"> log.error(text);</span>
<span class="nc" id="L174"> throw new RuntimeException(e);</span>
}
<span class="nc" id="L176"> catch (TransformerException e)</span>
{
<span class="nc" id="L178"> log.error("XSL error: {} at {}", e, e.getLocationAsString());</span>
<span class="nc" id="L179"> log.error(xslt);</span>
<span class="nc" id="L180"> throw new RuntimeException(e);</span>
}
<span class="nc" id="L182"> catch (IOException | SAXException | ParserConfigurationException | IllegalAccessException | InvocationTargetException e)</span>
{
<span class="nc" id="L184"> throw new RuntimeException(e);</span>
}
}
/*******************************************************************************************************************
*
******************************************************************************************************************/
@Nonnull
private Transformer createTransformer()
throws TransformerConfigurationException
{
<span class="fc" id="L195"> final Source transformation = new StreamSource(new StringReader(xslt));</span>
<span class="fc" id="L196"> final var transformer = transformerFactory.newTransformer(transformation);</span>
try
{
<span class="nc" id="L200"> final var uriResolver = context.getBean(URIResolver.class);</span>
<span class="nc" id="L201"> log.trace("Using URIResolver: {}", uriResolver.getClass());</span>
<span class="nc" id="L202"> transformer.setURIResolver(uriResolver);</span>
}
<span class="fc" id="L204"> catch (NoSuchBeanDefinitionException e)</span>
{
// ok, not installed
<span class="nc" id="L207"> }</span>
<span class="fc" id="L209"> return transformer;</span>
}
/*******************************************************************************************************************
*
******************************************************************************************************************/
@Nonnull
private static String asText (@Nonnull final ResourceFile file)
{
try
{
<span class="fc" id="L220"> log.info(">>>> {}", file.getPath().asString());</span>
<span class="fc" id="L221"> return file.asText("UTF-8");</span>
}
<span class="nc" id="L223"> catch (IOException e)</span>
{
<span class="nc" id="L225"> throw new RuntimeException(e);</span>
}
}
/*******************************************************************************************************************
*
******************************************************************************************************************/
@Nonnull
private Node stringToNode (@Nonnull final String string)
throws IOException, SAXException, ParserConfigurationException
{
<span class="fc" id="L236"> factory.setValidating(false);</span>
<span class="fc" id="L237"> final var builder = factory.newDocumentBuilder();</span>
<span class="fc" id="L238"> final var source = new InputSource(new StringReader(string));</span>
<span class="fc" id="L239"> return builder.parse(source);</span>
}
}
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