org.smallmind.wicket.util.FreeMarkerPackageTextTemplate Maven / Gradle / Ivy
/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project 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
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* or .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.wicket.util;
import java.io.IOException;
import java.io.StringWriter;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import freemarker.template.Configuration;
import freemarker.template.Template;
import org.apache.wicket.util.template.TextTemplate;
import org.smallmind.nutsnbolts.freemarker.ClassPathTemplateLoader;
public class FreeMarkerPackageTextTemplate extends TextTemplate {
private static final ConcurrentHashMap, Configuration> CONFIG_MAP = new ConcurrentHashMap<>();
private final Template freeMarkerTemplate;
public FreeMarkerPackageTextTemplate (Class> scopeClass, String fileName) {
Configuration freemarkerConf;
if ((freemarkerConf = CONFIG_MAP.get(scopeClass)) == null) {
freemarkerConf = new Configuration();
freemarkerConf.setTagSyntax(freemarker.template.Configuration.SQUARE_BRACKET_TAG_SYNTAX);
freemarkerConf.setTemplateLoader(new ClassPathTemplateLoader(scopeClass, true));
CONFIG_MAP.put(scopeClass, freemarkerConf);
}
try {
freeMarkerTemplate = freemarkerConf.getTemplate((fileName == null) ? scopeClass.getSimpleName() + ".js" : fileName);
} catch (IOException ioException) {
throw new RuntimeException(ioException);
}
}
@Override
public String getString () {
return freeMarkerTemplate.toString();
}
@Override
public TextTemplate interpolate (Map variables) {
StringWriter templateWriter = new StringWriter();
try {
freeMarkerTemplate.process(variables, templateWriter);
} catch (Exception exception) {
throw new RuntimeException(exception);
}
return new StaticTextTemplate(templateWriter.toString());
}
}
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