net.sf.jasperreports.compilers.StandardReportClassWhitelist Maven / Gradle / Ivy
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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2023 Cloud Software Group, Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see .
*/
package net.sf.jasperreports.compilers;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author Lucian Chirita ([email protected])
*/
public class StandardReportClassWhitelist implements ReportClassWhitelist
{
public static final String WHITELIST_SEPARATOR = ",";
private static final String WHITELIST_SEPARATOR_PATTERN = Pattern.quote(WHITELIST_SEPARATOR);
private static final char WILDCARD = '*';
private static final Pattern WILDCARD_PATTERN = Pattern.compile("\\*+");
private Set classWhitelist;
private List whitelistPatterns;
public StandardReportClassWhitelist()
{
this.classWhitelist = new HashSet<>();
this.whitelistPatterns = new ArrayList<>();
}
@Override
public boolean includesClass(String className)
{
if (classWhitelist.contains(className))
{
return true;
}
if (!whitelistPatterns.isEmpty())
{
for (Pattern pattern : whitelistPatterns)
{
if (pattern.matcher(className).matches())
{
return true;
}
}
}
return false;
}
public void addClass(String className)
{
classWhitelist.add(className);
}
public void addWhitelist(String whitelist)
{
String[] classes = whitelist.split(WHITELIST_SEPARATOR_PATTERN);
for (String whitelistClass : classes)
{
whitelistClass = whitelistClass.trim();
if (!whitelistClass.isEmpty())
{
if (whitelistClass.indexOf(WILDCARD) >= 0)
{
addPattern(whitelistClass);
}
classWhitelist.add(whitelistClass);
}
}
}
protected void addPattern(String classWildcard)
{
Matcher matcher = WILDCARD_PATTERN.matcher(classWildcard);
StringBuilder patternStr = new StringBuilder();
int prevIndex = 0;
while (matcher.find())
{
int matchStart = matcher.start();
int matchEnd = matcher.end();
if (matchStart > prevIndex)
{
patternStr.append(Pattern.quote(classWildcard.substring(prevIndex, matchStart)));
}
if (matchStart + 1 == matchEnd)
{
//single * - use class name pattern
//class names allow almost any character, see Character.isJavaIdentifierPart
//allowing anything except points to exclude packages
patternStr.append("[^\\.]*");
}
else
{
//multiple * - use class and package pattern
patternStr.append(".*");
}
prevIndex = matchEnd;
}
if (prevIndex < classWildcard.length())
{
patternStr.append(Pattern.quote(classWildcard.substring(prevIndex, classWildcard.length())));
}
Pattern pattern = Pattern.compile(patternStr.toString());
whitelistPatterns.add(pattern);
}
}