org.apache.drill.common.util.DrillFileUtils.java Source code

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Here is the source code for org.apache.drill.common.util.DrillFileUtils.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.drill.common.util;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URL;

import com.google.common.base.Charsets;
import com.google.common.io.Files;

public class DrillFileUtils {
    // These two seperators are intentionally used instead of Path.SEPERATPR or File.seperator
    // for loading classes since both alternatives return '\' on Windows. However, in the context
    // of classpath scanning and loading only '/' is valid.
    public static final char SEPARATOR_CHAR = '/';
    public static final String SEPARATOR = "/";

    public static File getResourceAsFile(String fileName) throws IOException {
        URL u = DrillFileUtils.class.getResource(fileName);
        if (u == null) {
            throw new FileNotFoundException(String.format("Unable to find file on path %s", fileName));
        }
        return new File(u.getPath());
    }

    public static String getResourceAsString(String fileName) throws IOException {
        return Files.toString(getResourceAsFile(fileName), Charsets.UTF_8);
    }
}