org.apache.hadoop.test.TestUtils.java Source code

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Here is the source code for org.apache.hadoop.test.TestUtils.java

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/**
 * 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 org.apache.hadoop.test;

import org.apache.commons.io.IOUtils;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;

public class TestUtils {

    public static String getResourceName(Class clazz, String name) {
        name = clazz.getName().replaceAll("\\.", "/") + "/" + name;
        return name;
    }

    public static URL getResourceUrl(Class clazz, String name) throws FileNotFoundException {
        name = getResourceName(clazz, name);
        URL url = ClassLoader.getSystemResource(name);
        if (url == null) {
            throw new FileNotFoundException(name);
        }
        return url;
    }

    public static InputStream getResourceStream(Class clazz, String name) throws IOException {
        URL url = getResourceUrl(clazz, name);
        InputStream stream = url.openStream();
        return stream;
    }

    public static Reader getResourceReader(Class clazz, String name, String charset) throws IOException {
        return new InputStreamReader(getResourceStream(clazz, name), charset);
    }

    public static String getResourceString(Class clazz, String name, String charset) throws IOException {
        return IOUtils.toString(getResourceReader(clazz, name, charset));
    }

}