/*

 * Copyright (c) 2017, 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 jdk.tools.jaotc.binformat.macho;

import java.io.File;

import java.io.FileOutputStream;

final class MachOContainer {

    private final File outputFile;

    private FileOutputStream outputStream;

    private long fileOffset;

    MachOContainer(String fileName) {

        outputFile = new File(fileName);

        if (outputFile.exists()) {

            outputFile.delete();

        }

        try {

            outputStream = new FileOutputStream(outputFile);

        } catch (Exception e) {

            System.out.println("MachOContainer: Can't create file " + fileName);

        }

        fileOffset = 0;

    }

    void close() {

        try {

            outputStream.close();

        } catch (Exception e) {

            System.out.println("MachOContainer: close failed");

        }

    }

    void writeBytes(byte[] bytes) {

        try {

            outputStream.write(bytes);

        } catch (Exception e) {

            System.out.println("MachOContainer: writeBytes failed");

        }

        fileOffset += bytes.length;

    }

    // Write bytes to output file with up front alignment padding

    void writeBytes(byte[] bytes, int alignment) {

        try {

            // Pad to alignment

            while ((fileOffset & (alignment - 1)) != 0) {

                outputStream.write(0);

                fileOffset++;

            }

            outputStream.write(bytes);

        } catch (Exception e) {

            System.out.println("MachOContainer: writeBytes failed");

        }

        fileOffset += bytes.length;

    }

}