net.nicholaswilliams.java.teamcity.plugin.buildNumber.PluginFileUtils.java Source code

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Here is the source code for net.nicholaswilliams.java.teamcity.plugin.buildNumber.PluginFileUtils.java

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/*
 * PluginFileUtils.java from TeamCityPlugins modified Monday, September 10, 2012 18:39:21 CDT (-0500).
 *
 * Copyright 2010-2012 the original author or authors.
 *
 * 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 net.nicholaswilliams.java.teamcity.plugin.buildNumber;

import org.apache.commons.io.IOUtils;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

/**
 * A helper class for various file operations.
 *
 * @author Nick Williams
 * @version 1.0.0
 * @since 1.0.0
 */
public class PluginFileUtils {
    public static File getCanonicalFile(File file) {
        try {
            return file.getCanonicalFile();
        } catch (IOException e) {
            throw new RuntimeException(
                    "Failed to get canonical file for absolute path [" + file.getAbsolutePath() + "].", e);
        }
    }

    public static void copyResource(Class<?> relativeClass, String resourceName, File destinationFile) {
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try {
            inputStream = relativeClass.getResourceAsStream(resourceName);
            if (inputStream == null) {
                throw new RuntimeException("No resource with name [" + resourceName + "] found relative to class ["
                        + relativeClass.getName() + "].");
            }

            outputStream = new FileOutputStream(destinationFile);

            IOUtils.copy(inputStream, outputStream);
        } catch (IOException e) {
            throw new RuntimeException(
                    "Failed to copy resource [" + resourceName + "] relative to class [" + relativeClass.getName()
                            + "] to destination file [" + destinationFile.getAbsolutePath() + "].");
        } finally {
            try {
                if (outputStream != null)
                    outputStream.close();
            } catch (IOException ignore) {
            }

            try {
                if (inputStream != null)
                    inputStream.close();
            } catch (IOException ignore) {
            }
        }
    }

    @SuppressWarnings("unchecked")
    public static List<String> readLines(Class<?> relativeClass, String resourceName) {
        InputStream inputStream = null;
        try {
            inputStream = relativeClass.getResourceAsStream(resourceName);
            if (inputStream == null) {
                throw new RuntimeException("No resource with name [" + resourceName + "] found relative to class ["
                        + relativeClass.getName() + "].");
            }

            return IOUtils.readLines(inputStream);
        } catch (IOException e) {
            throw new RuntimeException("Failed to read lines from resource [" + resourceName
                    + "] relative to class [" + relativeClass.getName() + "].");
        } finally {
            try {
                if (inputStream != null)
                    inputStream.close();
            } catch (IOException ignore) {
            }
        }
    }
}