src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/MimeTypeDetection.java

// Copyright (C) 2020 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.googlesource.gerrit.plugins.uploadvalidator;
import org.apache.tika.Tika;
import org.apache.tika.config.TikaConfig;
import org.apache.tika.io.TikaInputStream;
import org.apache.tika.metadata.Metadata;
import java.io.ByteArrayInputStream;
import java.io.IOException;

class MimeTypeDetection {
  public String getMimeType(String path, byte[] content) throws IOException {
    Tika tika = new Tika(TikaConfig.getDefaultConfig());

    Metadata metadata = new Metadata();
    metadata.set(Metadata.RESOURCE_NAME_KEY, path);

    ByteArrayInputStream bis = new ByteArrayInputStream(content);
    return tika.detect(TikaInputStream.get(bis), metadata);
  }
}