org.sonar.plugins.codesize.LineCounter.java Source code

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Here is the source code for org.sonar.plugins.codesize.LineCounter.java

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/*
 * Sonar Codesize Plugin
 * Copyright (C) 2010 Matthijs Galesloot
 * dev@sonar.codehaus.org
 *
 * 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 org.sonar.plugins.codesize;

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.LineIterator;
import org.codehaus.plexus.util.DirectoryScanner;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Count lines of code in a file.
 *
 * @author Matthijs Galesloot
 * @since 1.0
 *
 */
class LineCounter {

    private static final Logger LOG = LoggerFactory.getLogger(LineCounter.class);

    private Charset defaultCharset = Charset.defaultCharset();

    public int calculateLinesOfCode(File baseDir, FileSetDefinition fileSetDefinition) {
        List<File> files = getFiles(baseDir, fileSetDefinition.getIncludes(), fileSetDefinition.getExcludes());

        LOG.debug("Found " + files.size() + " files");
        int lines = 0;
        for (File file : files) {
            lines += countFile(file);
        }

        return lines;
    }

    private int countFile(File file) {

        int lines = 0;
        LineIterator lineIterator = null;

        try {
            lineIterator = FileUtils.lineIterator(file, defaultCharset.name());

            for (; lineIterator.hasNext(); lineIterator.next()) {
                lines++;
            }
        } catch (IOException e) {
            LOG.error("Could not open file", e);
        } finally {
            LineIterator.closeQuietly(lineIterator);
        }
        LOG.debug(file.getName() + ": " + lines);
        return lines;
    }

    private List<File> getFiles(File directory, List<String> includes, List<String> excludes) {
        List<File> fileList = new ArrayList<File>();

        // set up scanner
        DirectoryScanner scanner = new DirectoryScanner();
        scanner.setBasedir(directory);
        scanner.setIncludes(includes.toArray(new String[includes.size()]));
        scanner.setExcludes(excludes.toArray(new String[excludes.size()]));
        scanner.scan();

        // start scan
        for (String fileName : scanner.getIncludedFiles()) {
            fileList.add(new File(directory, fileName));
        }
        return fileList;
    }

    public void setDefaultCharset(Charset defaultCharset) {
        this.defaultCharset = defaultCharset;
    }
}