org.sonar.plugins.xml.LineCountSensor.java Source code

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Here is the source code for org.sonar.plugins.xml.LineCountSensor.java

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/*
 * Sonar XML 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.xml;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.LineIterator;
import org.apache.commons.lang.StringUtils;
import org.jfree.util.Log;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sonar.api.CoreProperties;
import org.sonar.api.batch.Sensor;
import org.sonar.api.batch.SensorContext;
import org.sonar.api.measures.CoreMetrics;
import org.sonar.api.resources.InputFile;
import org.sonar.api.resources.Project;
import org.sonar.plugins.xml.language.Xml;
import org.sonar.plugins.xml.parsers.LineCountParser;

/**
 * Count lines of code in XML files.
 * 
 * @author Matthijs Galesloot
 * @since 1.0
 */
public final class LineCountSensor implements Sensor {

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

    private void addMeasures(SensorContext sensorContext, File file, org.sonar.api.resources.File xmlFile) {

        LineIterator iterator = null;
        int numLines = 0;
        int numEmptyLines = 0;

        try {
            iterator = FileUtils.lineIterator(file);

            while (iterator.hasNext()) {
                String line = iterator.nextLine();
                numLines++;
                if (StringUtils.isEmpty(line)) {
                    numEmptyLines++;
                }
            }
        } catch (IOException e) {
            LOG.warn(e.getMessage());
        } finally {
            LineIterator.closeQuietly(iterator);
        }

        try {

            Log.debug("Count comment in " + file.getPath());

            int numCommentLines = new LineCountParser().countLinesOfComment(FileUtils.openInputStream(file));
            sensorContext.saveMeasure(xmlFile, CoreMetrics.LINES, (double) numLines);
            sensorContext.saveMeasure(xmlFile, CoreMetrics.COMMENT_LINES, (double) numCommentLines);
            sensorContext.saveMeasure(xmlFile, CoreMetrics.NCLOC,
                    (double) numLines - numEmptyLines - numCommentLines);
        } catch (Exception e) {
            LOG.debug("Fail to count lines in " + file.getPath(), e);
        }

        LOG.debug("LineCountSensor: " + xmlFile.getKey() + ":" + numLines + "," + numEmptyLines + "," + 0);
    }

    public void analyse(Project project, SensorContext sensorContext) {

        for (InputFile inputfile : XmlPlugin.getFiles(project)) {
            org.sonar.api.resources.File htmlFile = XmlProjectFileSystem.fromIOFile(inputfile, project);
            addMeasures(sensorContext, inputfile.getFile(), htmlFile);
        }
    }

    private boolean isEnabled(Project project) {
        return project.getConfiguration().getBoolean(CoreProperties.CORE_IMPORT_SOURCES_PROPERTY,
                CoreProperties.CORE_IMPORT_SOURCES_DEFAULT_VALUE);
    }

    /**
     * This sensor only executes on XML projects.
     */
    public boolean shouldExecuteOnProject(Project project) {
        return isEnabled(project) && Xml.KEY.equals(project.getLanguageKey());
    }

    @Override
    public String toString() {
        return getClass().getSimpleName();
    }
}