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/* Donated by Jarapac (http://jarapac.sourceforge.net/)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 *
 * This library 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 */
package ndr;

import jcifs.util.Hexdump;

public class NetworkDataRepresentation {

    public static final String NDR_UUID = "8a885d04-1ceb-11c9-9fe8-08002b104860";
    public static final int NDR_MAJOR_VERSION = 2;
    public static final int NDR_MINOR_VERSION = 0;
    public static final String NDR_SYNTAX = NDR_UUID + ":" + NDR_MAJOR_VERSION + "." + NDR_MINOR_VERSION;

    public int ptr;
    public NdrBuffer buf;
    public Format format;

    public NetworkDataRepresentation() {
    }

    public void setBuffer(NdrBuffer buf) {
        this.buf = buf;
    }

    public NdrBuffer getBuffer() {
        return buf;
    }

    public void hexdump(int count) {
        System.err.println(Hexdump.toHexString(buf.buf, buf.index, count));
    }

    public boolean readBoolean() {
        return buf.dec_ndr_small() == 0 ? false : true;
    }

    public void writeBoolean(boolean value) {
        buf.enc_ndr_small(value ? 1 : 0);
    }

    public int readUnsignedSmall() {
        return buf.dec_ndr_small();
    }

    public int readUnsignedShort() {
        return buf.dec_ndr_short();
    }

    public int readUnsignedLong() {
        return buf.dec_ndr_long();
    }

    public void writeUnsignedSmall(int value) {
        buf.enc_ndr_small(value);
    }

    public void writeUnsignedShort(int value) {
        buf.enc_ndr_short(value);
    }

    public void writeUnsignedLong(int value) {
        buf.enc_ndr_long(value);
    }

    public void setFormat(Format format) {
        this.format = format;
    }

    public Format getFormat() {
        return format;
    }

    public Format readFormat(boolean connectionless) {
        Format format = Format.readFormat(buf.buf, buf.index, connectionless);
        buf.index += 4;
        return format;
    }

    public void writeFormat(Format format) {
        format.writeFormat(buf.buf, buf.index, false);
        buf.index += 4;
    }

    public void writeFormat(boolean connectionless) {
        int index = buf.getIndex();
        buf.index += connectionless ? 3 : 4;
        format.writeFormat(buf.buf, index, connectionless);
    }

    public void readCharacterArray(char[] array, int offset, int length) {
        if (array == null || length == 0) {
            return;
        }
        length += offset;
        // won't work for EBCDIC
        for (int i = offset; i < length; i++) {
            array[i] = (char) buf.buf[buf.index++];
        }
    }

    public void writeCharacterArray(char[] array, int offset, int length) {
        if (array == null || length == 0) {
            return;
        }
        length += offset;
        // won't work for EBCDIC
        for (int i = offset; i < length; i++) {
            buf.buf[buf.index++] = (byte) array[i];
        }
    }

    public void writeOctetArray(byte[] b, int i, int l) {
        buf.writeOctetArray(b, i, l);
    }

    public void readOctetArray(byte[] b, int i, int l) {
        buf.readOctetArray(b, i, l);
    }
}