org.codehaus.mojo.emma.EmmaUtils.java Source code

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Here is the source code for org.codehaus.mojo.emma.EmmaUtils.java

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package org.codehaus.mojo.emma;

/*
 * The MIT License
 *
 * Copyright (c) 2007-8, The Codehaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.util.FileUtils;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * Utilities.
 * 
 * @author <a href="mailto:alexandre.roman@gmail.com">Alexandre ROMAN</a>
 */
class EmmaUtils {
    /**
     * Do not instantiate EmmaUtils.
     */
    private EmmaUtils() {
    }

    /**
     * Fix EMMA data file locations. EMMA generates data files in wrong locations: this method moves these files to
     * valid locations.
     * 
     * @param project current Maven project
     * @param dataFiles to fix
     * @return new data file locations
     */
    public static File[] fixDataFileLocations(MavenProject project, File[] dataFiles) {
        if (dataFiles == null) {
            return new File[0];
        }

        final List newDataFiles = new ArrayList(dataFiles.length);
        for (int i = 0; i < dataFiles.length; ++i) {
            final File src = dataFiles[i];
            if (!src.exists()) {
                // if the file does not exist, we cannot use it
                continue;
            }

            if (src.getParentFile().equals(project.getBasedir())) {
                // EMMA generates coverage data files in project root
                // (as it is actually the current directory):
                // move these files to the "target" directory
                final File dst = new File(project.getBuild().getDirectory(), "coverage-" + i + ".ec");
                try {
                    FileUtils.rename(src, dst);
                } catch (IOException e) {
                    final RuntimeException e2 = new IllegalStateException(
                            "Failed to move coverage data file: " + src.getAbsolutePath());
                    e2.initCause(e);
                    throw e2;
                }
                newDataFiles.add(dst);
            } else {
                newDataFiles.add(src);
            }
        }

        return (File[]) newDataFiles.toArray(new File[newDataFiles.size()]);
    }
}