com.l2jfree.gameserver.util.GPLLicenseChecker.java Source code

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Here is the source code for com.l2jfree.gameserver.util.GPLLicenseChecker.java

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/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jfree.gameserver.util;

import java.io.File;
import java.io.FileFilter;
import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.io.IOUtils;

import com.l2jfree.L2AutoInitialization;

/**
 * @author NB4L1
 */
public final class GPLLicenseChecker extends L2AutoInitialization {
    private static final ArrayList<String> MODIFIED = new ArrayList<String>();

    /**
     * Determines that it will check the whole project, or only the core itself.<br>
     * If set to 'true' then it requires other projects to be checked out near the core.
     */
    private static boolean WHOLE_PROJECT = false;

    public static void main(String[] args) throws IOException {
        if (WHOLE_PROJECT)
            parse(new File(".").getCanonicalFile().getParentFile());
        else
            parse(new File("."));

        System.out.println();

        if (MODIFIED.isEmpty()) {
            System.out.println("There was no modification.");
        } else {
            System.out.println("Modified files:");
            System.out.println("================");

            for (String line : MODIFIED)
                System.out.println(line);
        }

        System.out.flush();
    }

    private static final FileFilter FILTER = new FileFilter() {
        @Override
        public boolean accept(File f) {
            // to skip svn files
            if (f.isHidden())
                return false;

            return f.isDirectory() || f.getName().endsWith("java");
        }
    };

    private static void parse(File f) throws IOException {
        System.out.println(f.getCanonicalPath());

        if (f.isDirectory()) {
            for (File tmp : f.listFiles(FILTER))
                parse(tmp);
        } else {
            List<String> tmpList = read(f);

            if (tmpList == null)
                return;

            ArrayList<String> list2 = new ArrayList<String>();

            for (String line : LICENSE)
                list2.add(line);

            boolean foundPackageDeclaration = false;
            for (String line : tmpList)
                if (foundPackageDeclaration |= containsPackageName(line))
                    list2.add(line);

            PrintStream ps = null;
            try {
                ps = new PrintStream(f);

                for (String line : list2)
                    ps.println(line);
            } finally {
                IOUtils.closeQuietly(ps);
            }
        }
    }

    private static final String[] LICENSE = { "/*", // ...
            " * This program is free software: you can redistribute it and/or modify it under", // ...
            " * the terms of the GNU 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 General Public License for more", // ...
            " * details.", // ...
            " * ", // ...
            " * You should have received a copy of the GNU General Public License along with", // ...
            " * this program. If not, see <http://www.gnu.org/licenses/>.", // ...
            " */", // ...
    };

    private static List<String> read(File f) throws IOException {
        ArrayList<String> list = new ArrayList<String>();

        LineNumberReader lnr = null;
        try {
            lnr = new LineNumberReader(new FileReader(f));

            for (String line; (line = lnr.readLine()) != null;)
                list.add(line);
        } finally {
            IOUtils.closeQuietly(lnr);
        }

        int i = 0;
        for (; i < LICENSE.length; i++) {
            if (!list.get(i).equals(LICENSE[i])) {
                MODIFIED.add(f.getPath() + ":" + i);
                return list;
            }
        }

        if (!startsWithPackageName(list.get(i))) {
            MODIFIED.add(f.getPath() + ":" + lnr.getLineNumber());
            return list;
        }

        return null;
    }

    private static final String[] WHOLE_PROJECT_PACKAGE_NAMES = { "package com.l2jfree",
            "package com.l2jfree.mmocore.network", "package ai", "package cron", "package custom",
            "package instances", "package quests", "package teleports", "package transformations",
            "package village_master" };

    private static boolean startsWithPackageName(String line) {
        if (!WHOLE_PROJECT)
            return line.startsWith("package com.l2jfree");

        for (String packageName : WHOLE_PROJECT_PACKAGE_NAMES)
            if (line.startsWith(packageName))
                return true;

        return false;
    }

    private static boolean containsPackageName(String line) {
        if (!WHOLE_PROJECT)
            return line.contains("package com.l2jfree");

        for (String packageName : WHOLE_PROJECT_PACKAGE_NAMES)
            if (line.contains(packageName))
                return true;

        return false;
    }
}