<?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>MacroFilter.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 :: Core :: Default Implementation</a> > <a href="index.source.html" class="el_package">it.tidalwave.northernwind.core.impl.filter</a> > <span class="el_source">MacroFilter.java</span></div><h1>MacroFilter.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 javax.annotation.Nonnull;
import javax.annotation.concurrent.ThreadSafe;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.springframework.beans.factory.annotation.Configurable;
import it.tidalwave.util.NotFoundException;
import it.tidalwave.northernwind.core.impl.model.Filter;
import lombok.extern.slf4j.Slf4j;
/***********************************************************************************************************************
*
* An implementation of {@link Filter} based on regular expressions. Each instance of text which matches a given regular
* expression is replaced with the result of the call to {@link #doFilter(Matcher)}.
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
<span class="fc" id="L46">@Configurable(preConstruction=true) @ThreadSafe @Slf4j</span>
public class MacroFilter implements Filter // FIXME: rename to RegexFilter
rename to RegexFilter
{
@Nonnull
private final Pattern pattern;
/*******************************************************************************************************************
*
* Creates an instance with the given regular expression.
*
* @param regex the regular expression
*
******************************************************************************************************************/
public MacroFilter (@Nonnull final String regex)
<span class="pc bpc" id="L60" title="9 of 18 branches missed."> {</span>
<span class="fc" id="L61"> pattern = Pattern.compile(regex);</span>
<span class="pc bpc" id="L62" title="2 of 4 branches missed."> }</span>
/*******************************************************************************************************************
*
* {@inheritDoc}
*
******************************************************************************************************************/
@Override @Nonnull
public String filter (@Nonnull final String text, @Nonnull final String mimeType)
{
<span class="fc" id="L72"> final var matcher = pattern.matcher(text);</span>
<span class="fc" id="L73"> final var buffer = new StringBuilder();</span>
<span class="fc bfc" id="L75" title="All 2 branches covered."> while (matcher.find())</span>
{
<span class="fc" id="L77"> final var filtered = doFilter(matcher);</span>
try
{
<span class="fc" id="L80"> matcher.appendReplacement(buffer, filtered);</span>
}
<span class="nc" id="L82"> catch (IllegalArgumentException e) // better diagnostics</span>
{
<span class="nc" id="L84"> throw new IllegalArgumentException(String.format("Pattern error: %s regexp: %s%n**** filtered: %s%n**** buffer: %s",</span>
<span class="nc" id="L85"> e.getMessage(), pattern.pattern(), filtered, buffer));</span>
<span class="fc" id="L86"> }</span>
<span class="fc" id="L87"> }</span>
<span class="fc" id="L89"> matcher.appendTail(buffer);</span>
<span class="fc" id="L91"> return buffer.toString();</span>
}
/*******************************************************************************************************************
*
* Apply the filtering given an instance of {@link Matcher}.
*
* @param matcher the {@code Matcher}
* return the filtered string
*
******************************************************************************************************************/
@Nonnull
protected String filter (@Nonnull final Matcher matcher)
throws NotFoundException
{
<span class="nc" id="L106"> return "";</span>
}
/*******************************************************************************************************************
*
*
*
******************************************************************************************************************/
@Nonnull
private String doFilter (@Nonnull final Matcher matcher)
{
try
{
<span class="fc" id="L119"> return filter(matcher);</span>
}
<span class="nc" id="L121"> catch (NotFoundException e)</span>
{
<span class="nc" id="L123"> log.error("", e);</span>
<span class="nc" id="L124"> return "";</span>
}
}
}
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