/*

 * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 4510979

 * @summary Test to make sure that the source documentation is indented properly

 * when -linksourcetab is used.

 * @author jamieh

 * @library ../lib

 * @modules jdk.javadoc

 * @build JavadocTester

 * @run main TestSourceTab

 */

import java.io.*;

public class TestSourceTab extends JavadocTester {

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

        TestSourceTab tester = new TestSourceTab();

        tester.runTests();

    }

    @Test

    void test() throws Exception {

        String tmpSrcDir = "tmpSrc";

        String outdir1 = "out-tabLengthEight";

        String outdir2 = "out-tabLengthFour";

        initTabs(new File(testSrc), new File(tmpSrcDir));

        // Run Javadoc on a source file with that is indented with a single tab per line

        javadoc("-d", outdir1,

                "-sourcepath", tmpSrcDir,

                "-notimestamp",

                "-linksource",

                tmpSrcDir + "/SingleTab/C.java");

        checkExit(Exit.OK);

        // Run Javadoc on a source file with that is indented with a two tab per line

        // If we double the tabs and decrease the tab length by a half, the output should

        // be the same as the one generated above.

        javadoc("-d", outdir2,

                "-sourcepath", tmpSrcDir,

                "-notimestamp",

                "-sourcetab", "4",

                tmpSrcDir + "/DoubleTab/C.java");

        checkExit(Exit.OK);

        diff(outdir1, outdir2,

                "src-html/C.html",

                "C.html");

    }

    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"));

            }

        }

    }

    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(NL);

            }

        }

        return sb.toString();

    }

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

        f.getParentFile().mkdirs();

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

            out.write(s);

        }

    }

}