/*

 * 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 4720849

 * @summary  com.sun.tools.doclets.standard.Standard contains hard-coded version number

 * @author dkramer

 * @run main VersionNumber

 */

import com.sun.javadoc.*;

import java.util.*;

import java.io.*;

/**

 * Runs javadoc and runs regression tests on the resulting HTML.

 * It reads each file, complete with newlines, into a string to easily

 * find strings that contain newlines.

 */

public class VersionNumber {

    private static final String BUGID = "4720849";

    private static final String BUGNAME = "VersionNumber";

    private static final String FS = System.getProperty("file.separator");

    private static final String PS = System.getProperty("path.separator");

    private static final String LS = System.getProperty("line.separator");

    private static final String TMPDEST_DIR1 = "." + FS + "docs1" + FS;

    private static final String TMPDEST_DIR2 = "." + FS + "docs2" + FS;

    // Subtest number.  Needed because runResultsOnHTML is run twice,

    // and subtestNum should increment across subtest runs.

    public static int subtestNum = 0;

    public static int numSubtestsPassed = 0;

    // Entry point

    public static void main(String[] args) {

        // Directory that contains source files that javadoc runs on

        String srcdir = System.getProperty("test.src", ".");

        // Test for all cases except the split index page

        runJavadoc(new String[] {"-d", TMPDEST_DIR1,

                                 "p1"});

        runTestsOnHTML(testArray);

        printSummary();

    }

    /** Run javadoc */

    public static void runJavadoc(String[] javadocArgs) {

        if (com.sun.tools.javadoc.Main.execute(javadocArgs) != 0) {

            throw new Error("Javadoc failed to execute");

        }

    }

    /**

     * Assign value for [ stringToFind, filename ]

     * NOTE: The standard doclet uses the same separator "\n" for all OS's

     */

    private static final String[][] testArray = {

            // Test the proper DOCTYPE element is present:

            {

                     TMPDEST_DIR1 + "p1" + FS + "C.html"  },

        };

    public static void runTestsOnHTML(String[][] testArray) {

        for (int i = 0; i < testArray.length; i++) {

            subtestNum += 1;

            // Read contents of file into a string

            String fileString = readFileToString(testArray[i][1]);

            // Get string to find

            String stringToFind = testArray[i][0];

            // Find string in file's contents

            if (findString(fileString, stringToFind) == -1) {

                System.out.println("\nSub-test " + (subtestNum)

                    + " for bug " + BUGID + " (" + BUGNAME + ") FAILED\n"

                    + "when searching for:\n"

                    + stringToFind);

            } else {

                numSubtestsPassed += 1;

                System.out.println("\nSub-test " + (subtestNum) + " passed:\n" + stringToFind);

            }

        }

    }

    public static void printSummary() {

        if ( numSubtestsPassed == subtestNum ) {

            System.out.println("\nAll " + numSubtestsPassed + " subtests passed");

        } else {

            throw new Error("\n" + (subtestNum - numSubtestsPassed) + " of " + (subtestNum)

                             + " subtests failed for bug " + BUGID + " (" + BUGNAME + ")\n");

        }

    }

    // Read the file into a String

    public static String readFileToString(String filename) {

        try {

            File file = new File(filename);

            if ( !file.exists() ) {

                System.out.println("\nFILE DOES NOT EXIST: " + filename);

            }

            BufferedReader in = new BufferedReader(new FileReader(file));

            // Create an array of characters the size of the file

            char[] allChars = new char[(int)file.length()];

            // Read the characters into the allChars array

            in.read(allChars, 0, (int)file.length());

            in.close();

            // Convert to a string

            String allCharsString = new String(allChars);

            return allCharsString;

        } catch (FileNotFoundException e) {

            System.err.println(e);

            return "";

        } catch (IOException e) {

            System.err.println(e);

            return "";

        }

    }

    public static int findString(String fileString, String stringToFind) {

        return fileString.indexOf(stringToFind);

    }

}