/*

 * Copyright (c) 2005, 2018, 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.

 */

package nsk.monitoring.share;

import java.util.*;

import java.io.*;

import java.util.ArrayList;

public class Generator {

        private String patternFileName;

        private String outDir;

        private List<String> lines = new ArrayList<>();

        private String prefix = "LoadableClass";

        public Generator(String patternFileName, String outDir) {

                this.patternFileName = patternFileName;

                this.outDir = outDir;

        }

        private void load() throws IOException {

                BufferedReader rd = null;

                try {

                        rd = new BufferedReader(new FileReader(patternFileName));

                        String s = rd.readLine();

                        while (s != null) {

                                lines.add(s);

                                s = rd.readLine();

                        }

                } finally {

                        if (rd != null) {

                                rd.close();

                        }

                }

        }

        private void generate(int n) throws IOException {

                PrintStream out = null;

                String tokens = Integer.toString(n);

                if (tokens.length() == 1)

                        tokens = "00" + tokens;

                else if (tokens.length() == 2)

                        tokens = "0" + tokens;

                try {

                        out = new PrintStream(new FileOutputStream(new File(outDir, prefix + tokens + ".java")));

                        for (int i = 0; i < lines.size(); ++i) {

                                String line = lines.get(i);

                                out.println(line.replaceAll("XYZ", tokens));

                        }

                } finally {

                        if (out != null) {

                                out.close();

                        }

                }

        }

        public void run() throws IOException {

                load();

                for (int i = 1; i < 101; ++i)

                        generate(i);

        }

        private static void usage() {

                System.out.println("Usage: nsk.monitoring.share.Generator <pattern file> <output directory>");

        }

        public static void main(String[] args) throws Exception {

                if (args.length != 2) {

                        usage();

                        throw new IllegalArgumentException("Need exactly two arguments.");

                }

                new Generator(args[0], args[1]).run();

        }

}