/*

 * Copyright (c) 1998, 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 4071765

   @summary Bug in the parameter of str.getChars called in write

*/

import java.io.*;

public class WriteFromString {

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

        LocalStringWriter lsw = new LocalStringWriter();

        boolean result = true;

        String testString = "Testing of what gets written";

        // Should write out at offset 2 for length 4 i.e."stin"

        lsw.write(testString, 1, 4);

        String res = lsw.toString();

        if (!res.equals("esti")) {

            result = false;

            System.err.println("Writer.write is incorrect:" + res);

        }

        // Same bug in stringwriter as well

        StringWriter sw = new StringWriter();

        sw.write(testString, 1, 4);

        res = sw.toString();

        String ss = testString.substring(1,4);

        System.out.println("Substring = "+ss);

        if (!res.equals("esti")) {

            System.err.println("StringWriter.write is incorrect:" + res);

            result = false;

        }

        if (!result) {

            throw new Exception("Writer.write method is incorrect.");

        }

    }

}

/**

 * A copy of StringWriter to test the write method in Writer

 */

class LocalStringWriter extends Writer {

    private StringBuffer buf;

    /**

     * Create a new string writer, using the default initial string-buffer

     * size.

     */

    public LocalStringWriter() {

        buf = new StringBuffer();

        lock = buf;

    }

    /**

     * Write a portion of an array of characters.

     *

     * @param  cbuf  Array of characters

     * @param  off   Offset from which to start writing characters

     * @param  len   Number of characters to write

     */

    public void write(char cbuf[], int off, int len) {

        if ((off < 0) || (off > cbuf.length) || (len < 0) ||

            ((off + len) > cbuf.length) || ((off + len) < 0)) {

            throw new IndexOutOfBoundsException();

        } else if (len == 0) {

            return;

        }

        buf.append(cbuf, off, len);

    }

    /**

     * Write a string.

     */

    public void write(String str) {

        buf.append(str);

    }

    /**

     * Return the buffer's current value as a string.

     */

    public String toString() {

        return buf.toString();

    }

    public void flush(){ }

    public void close(){ }

}