Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

import java.io.IOException;
import java.io.InputStream;

public class Main {
    /**
     * WARNING: if the <param>inStream</param> instance does not support mark/reset, when this method returns,
     * subsequent reads on <param>inStream</param> will be 256 bytes into the stream. This may not be the expected
     * behavior. FileInputStreams are an example of an InputStream that does not support mark/reset. InputStreams
     * that do support mark/reset will be reset to the beginning of the stream when this method returns.
     * 
     * @param inStream
     * @return
     * @throws IOException
     */
    public static String readEncodingProcessingInstruction(final InputStream inStream) throws IOException {
        final int BUFF_SZ = 256;
        if (inStream.markSupported()) {
            inStream.mark(BUFF_SZ + 1); // BUFF_SZ+1 forces mark to NOT be forgotten
        }
        byte[] buf = new byte[BUFF_SZ];
        int totalBytesRead = 0;
        int bytesRead;
        do {
            bytesRead = inStream.read(buf, totalBytesRead, BUFF_SZ - totalBytesRead);
            if (bytesRead == -1) {
                break;
            }
            totalBytesRead += bytesRead;
        } while (totalBytesRead < BUFF_SZ);

        if (inStream.markSupported()) {
            inStream.reset();
        }

        return new String(buf);
    }
}