freemarker.cache.ByteArrayTemplateLoader Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of com.liferay.portal.template.freemarker
Show all versions of com.liferay.portal.template.freemarker
Liferay Portal Template FreeMarker
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package freemarker.cache;
import java.io.ByteArrayInputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
import freemarker.template.utility.StringUtil;
/**
* A {@link TemplateLoader} that uses a {@link Map} with {@code byte[]} as its source of templates. This is similar to
* {@link StringTemplateLoader}, but uses {@code byte[]} instead of {@link String}; see more details there.
*
* @since 2.3.24
*/
public class ByteArrayTemplateLoader implements TemplateLoader {
private final Map templates = new HashMap<>();
/**
* Adds a template to this template loader; see {@link StringTemplateLoader#putTemplate(String, String)} for more.
*/
public void putTemplate(String name, byte[] templateContent) {
putTemplate(name, templateContent, System.currentTimeMillis());
}
/**
* Adds a template to this template loader; see {@link StringTemplateLoader#putTemplate(String, String, long)} for
* more.
*/
public void putTemplate(String name, byte[] templateContent, long lastModified) {
templates.put(name, new ByteArrayTemplateSource(name, templateContent, lastModified));
}
/**
* Removes the template with the specified name if it was added earlier.; see
* {@link StringTemplateLoader#removeTemplate(String)} for more details.
*
* @since 2.3.26
*/
public boolean removeTemplate(String name) {
return templates.remove(name) != null;
}
@Override
public void closeTemplateSource(Object templateSource) {
}
@Override
public Object findTemplateSource(String name) {
return templates.get(name);
}
@Override
public long getLastModified(Object templateSource) {
return ((ByteArrayTemplateSource) templateSource).lastModified;
}
@Override
public Reader getReader(Object templateSource, String encoding) throws UnsupportedEncodingException {
return new InputStreamReader(
new ByteArrayInputStream(((ByteArrayTemplateSource) templateSource).templateContent),
encoding);
}
private static class ByteArrayTemplateSource {
private final String name;
private final byte[] templateContent;
private final long lastModified;
ByteArrayTemplateSource(String name, byte[] templateContent, long lastModified) {
if (name == null) {
throw new IllegalArgumentException("name == null");
}
if (templateContent == null) {
throw new IllegalArgumentException("templateContent == null");
}
if (lastModified < -1L) {
throw new IllegalArgumentException("lastModified < -1L");
}
this.name = name;
this.templateContent = templateContent;
this.lastModified = lastModified;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ByteArrayTemplateSource other = (ByteArrayTemplateSource) obj;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
return true;
}
}
/**
* Show class name and some details that are useful in template-not-found errors.
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(TemplateLoaderUtils.getClassNameForToString(this));
sb.append("(Map { ");
int cnt = 0;
for (String name : templates.keySet()) {
cnt++;
if (cnt != 1) {
sb.append(", ");
}
if (cnt > 10) {
sb.append("...");
break;
}
sb.append(StringUtil.jQuote(name));
sb.append("=...");
}
if (cnt != 0) {
sb.append(' ');
}
sb.append("})");
return sb.toString();
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy