org.sonar.plugins.openedge.foundation.OpenEdgeProjectHelper.java Source code

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Here is the source code for org.sonar.plugins.openedge.foundation.OpenEdgeProjectHelper.java

Source

/*
 * OpenEdge plugin for SonarQube
 * Copyright (C) 2013-2016 Riverside Software
 * contact AT riverside DASH software DOT fr
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.plugins.openedge.foundation;

import java.io.File;
import java.util.List;
import java.util.regex.Pattern;

import org.apache.commons.io.FilenameUtils;

public class OpenEdgeProjectHelper {

    private OpenEdgeProjectHelper() {

    }

    /**
     * Get the relative path from one file to another. Directory separator should be / Implementation from
     * StackOverflow...
     * 
     * @param targetPath targetPath is calculated to this file
     * @param basePath basePath is calculated from this file
     * @param pathSeparator directory separator. The platform default is not assumed so that we can test Unix behaviour
     *          when running on Windows (for example)
     * @return Null if not present in subdirectory
     */
    public static String getRelativePath(String targetPath, String basePath) {
        String[] base = basePath.split(Pattern.quote("/"));
        String[] target = targetPath.split(Pattern.quote("/"));

        // First get all the common elements. Store them as a string,
        // and also count how many of them there are.
        StringBuilder common = new StringBuilder();

        int commonIndex = 0;
        while (commonIndex < target.length && commonIndex < base.length
                && target[commonIndex].equals(base[commonIndex])) {
            common.append(target[commonIndex] + "/");
            commonIndex++;
        }

        if (commonIndex == 0) {
            return "";
        }

        StringBuilder relative = new StringBuilder();

        if (base.length != commonIndex) {
            return "";
        }

        relative.append(targetPath.substring(common.length()));
        return relative.toString();
    }

    public static String getPathRelativeToSourceDirs(File file, List<String> propath) {
        for (String entry : propath) {
            String s = getRelativePath(FilenameUtils.normalizeNoEndSeparator(file.getAbsolutePath(), true), entry);
            if (s.length() != 0)
                return s;
        }
        return "";
    }

}