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// Copyright (C) 2013 The Android Open Source Project
//
// 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.
package com.google.gerrit.server.mime;
import com.google.common.collect.ImmutableMap;
import eu.medsea.mimeutil.MimeException;
import eu.medsea.mimeutil.MimeType;
import eu.medsea.mimeutil.MimeUtil;
import eu.medsea.mimeutil.detector.MimeDetector;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** Loads mime types from {@code mime-types.properties} at specificity of 2. */
public class DefaultFileExtensionRegistry extends MimeDetector {
private static final Logger log = LoggerFactory.getLogger(DefaultFileExtensionRegistry.class);
private static final ImmutableMap<String, MimeType> TYPES;
static {
Properties prop = new Properties();
try (InputStream in =
DefaultFileExtensionRegistry.class.getResourceAsStream("mime-types.properties")) {
prop.load(in);
} catch (IOException e) {
log.warn("Cannot load mime-types.properties", e);
}
ImmutableMap.Builder<String, MimeType> b = ImmutableMap.builder();
for (Map.Entry<Object, Object> e : prop.entrySet()) {
MimeType type = new FileExtensionMimeType((String) e.getValue());
b.put((String) e.getKey(), type);
MimeUtil.addKnownMimeType(type);
}
TYPES = b.build();
}
@Override
public String getDescription() {
return getClass().getName();
}
@Override
protected Collection<MimeType> getMimeTypesFileName(String name) {
int s = name.lastIndexOf('/');
if (s >= 0) {
name = name.substring(s + 1);
}
MimeType type = TYPES.get(name);
if (type != null) {
return Collections.singletonList(type);
}
int d = name.lastIndexOf('.');
if (0 < d) {
type = TYPES.get(name.substring(d + 1));
if (type != null) {
return Collections.singletonList(type);
}
}
return Collections.emptyList();
}
@Override
protected Collection<MimeType> getMimeTypesFile(File file) {
return getMimeTypesFileName(file.getName());
}
@Override
protected Collection<MimeType> getMimeTypesURL(URL url) {
return getMimeTypesFileName(url.getPath());
}
@Override
protected Collection<MimeType> getMimeTypesInputStream(InputStream arg0) {
return Collections.emptyList();
}
@Override
protected Collection<MimeType> getMimeTypesByteArray(byte[] arg0) {
return Collections.emptyList();
}
private static final class FileExtensionMimeType extends MimeType {
private static final long serialVersionUID = 1L;
FileExtensionMimeType(String mimeType) throws MimeException {
super(mimeType);
}
@Override
public int getSpecificity() {
return 2;
}
}
}
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