/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/**

 * @test

 * @bug     4994049

 * @summary Unit test for SourcePosition.column with respect to tab expansion

 * @author  Peter von der Ah\u00e9

 * @modules jdk.javadoc

 * @run main T4994049 FileWithTabs.java

 */

import com.sun.javadoc.*;

import java.io.*;

import static com.sun.tools.javadoc.Main.execute;

public class T4994049 extends Doclet {

    public static boolean start(RootDoc root) {

        for (ClassDoc klass : root.classes()) {

            for (MethodDoc method : klass.methods()) {

                if (method.name().equals("tabbedMethod")) {

                    if (method.position().column() == 21) {

                        System.out.println(method.position().column() + ": OK!");

                        return true;

                    } else {

                        System.err.println(method.position() + ": wrong tab expansion");

                        return false;

                    }

                }

            }

        }

        return false;

    }

    public static void main(String... args) throws Exception {

        File testSrc = new File(System.getProperty("test.src"));

        File tmpSrc = new File("tmpSrc");

        initTabs(testSrc, tmpSrc);

        for (String file : args) {

            File source = new File(tmpSrc, file);

            int rc = execute("javadoc", "T4994049", T4994049.class.getClassLoader(),

                        new String[]{ source.getPath() } );

            if (rc != 0)

                throw new Error("Unexpected return code from javadoc: " + rc);

        }

    }

    static void initTabs(File from, File to) throws IOException {

        for (File f: from.listFiles()) {

            File t = new File(to, f.getName());

            if (f.isDirectory()) {

                initTabs(f, t);

            } else if (f.getName().endsWith(".java")) {

                write(t, read(f).replace("\\t", "\t"));

            }

        }

    }

    static String read(File f) throws IOException {

        StringBuilder sb = new StringBuilder();

        try (BufferedReader in = new BufferedReader(new FileReader(f))) {

            String line;

            while ((line = in.readLine()) != null) {

                sb.append(line);

                sb.append("\n");

            }

        }

        return sb.toString();

    }

    static void write(File f, String s) throws IOException {

        f.getParentFile().mkdirs();

        try (Writer out = new FileWriter(f)) {

            out.write(s);

        }

    }

}