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/* jdwglib. Java Library for reading Dwg files.
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*
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* Author: Jose Morell Rama (jose.morell@gmail.com).
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* Port from the Pythoncad Dwg library by Art Haas.
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*
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* Copyright (C) 2005 Jose Morell, IVER TI S.A. and Generalitat Valenciana
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Jose Morell (jose.morell@gmail.com)
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*
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* or
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*
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* IVER TI S.A.
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* C/Salamanca, 50
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* 46005 Valencia
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* Spain
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.dwg.lib;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.ArrayList;
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import java.util.List;
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import org.gvsig.dwg.lib.util.HexUtil;
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/**
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* The DwgUtil class contains the essential set of functions for reading bitstreams
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* in DWG files
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*
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* @author jmorell
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*/
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public final class DwgUtil {
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/**
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* Read the extended data for a DWG object
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* Don't use in this version. Serious bugs detected
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*
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* @param data Array of unsigned bytes obtained from the DWG binary file
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* @param offset The current bit offset where the value begins
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* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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* when we are looking for LwPolylines.
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* @return ArrayList This ArrayList has two parts. First is an int value that represents
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* the new offset, and second is the extended data of a DWG object
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*/
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public static ArrayList readExtendedData(int[] data, int offset) throws RuntimeException {
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int bitPos = offset;
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ArrayList extData = new ArrayList();
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while (true) {
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int newBitPos = ((Integer)getBitShort(data, bitPos).get(0)).intValue();
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int size = ((Integer) getBitShort(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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if (size == 0) {
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break;
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}
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newBitPos = ((Integer)((ArrayList)getHandle(data, bitPos)).get(0)).intValue();
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// TODO: Esto no es correcto. Repasar ...
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int handle = ((Integer)((ArrayList)getHandle(data, bitPos)).get(1)).intValue();
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bitPos = newBitPos;
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ArrayList eedata = new ArrayList();
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while (size > 0) {
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newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue();
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int cb = ((Integer) getRawChar(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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size = size - 1;
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if (cb == 0x0) {
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newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue();
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int len = ((Integer)getRawChar(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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newBitPos = ((Integer)getRawShort(data, bitPos).get(0)).intValue();
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int cp = ((Integer)getRawShort(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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ArrayList chars = new ArrayList();
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for (int i = 0; i < len; i++) {
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newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue();
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int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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// �int o char?
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chars.add(new Integer(charr));
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}
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// Incorrecto. Repasar ...
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eedata.add(chars);
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size = size - len - 3;
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} else if (cb == 0x1) {
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System.out.println("Invalid EXX code byte: 0x1");
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} else if (cb == 0x2) {
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newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue();
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int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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if (charr == 0x0) {
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eedata.add("{");
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} else if (charr == 0x1) {
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eedata.add("}");
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} else {
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System.out.println("Unexpected EXX char: " + charr);
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}
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size = size - 1;
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} else if (cb == 0x3 || cb == 0x5) {
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ArrayList chars = new ArrayList();
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for (int i = 0; i < 8; i++) {
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newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue();
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int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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chars.add(new Integer(charr));
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}
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eedata.add(chars);
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size = size - 8;
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} else if (cb == 0x4) {
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newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue();
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int len = ((Integer)getRawChar(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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ArrayList chars = new ArrayList();
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for (int i = 0; i < len; i++) {
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newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue();
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int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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chars.add(new Integer(charr));
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}
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eedata.add(chars);
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size = size - len - 1;
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} else if (0xa <= cb && cb <= 0xd) {
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newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue();
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double d1 = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue();
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bitPos = newBitPos;
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newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue();
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double d2 = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue();
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bitPos = newBitPos;
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newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue();
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double d3 = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue();
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bitPos = newBitPos;
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eedata.add(new double[] { d1, d2, d3 });
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size = size - 24;
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} else if (0x28 <= cb && cb <= 0x2a) {
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newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue();
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double d = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue();
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bitPos = newBitPos;
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eedata.add(new Double(d));
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size = size - 8;
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} else if (cb == 0x46) {
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newBitPos = ((Integer)getRawShort(data, bitPos).get(0)).intValue();
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int shortt = ((Integer)getRawShort(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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eedata.add(new Integer(shortt));
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size = size - 2;
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} else if (cb == 0x47) {
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newBitPos = ((Integer)getRawLong(data, bitPos).get(0)).intValue();
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int longg = ((Integer)getRawLong(data, bitPos).get(1)).intValue();
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bitPos = newBitPos;
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eedata.add(new Integer(longg));
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size = size - 4;
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} else {
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System.out.println("Unexpected code byte: " + cb);
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}
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}
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ArrayList v = new ArrayList();
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// v.add(handle, eedata);
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extData.add(v);
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}
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ArrayList v = new ArrayList();
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v.add(new Integer(bitPos));
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v.add(extData);
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return v;
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}
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/**
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* Read a double value from a group of unsigned bytes and a default double
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*
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* @param data Array of unsigned bytes obtained from the DWG binary file
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* @param offset The current bit offset where the value begins
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* @param defVal Default double value
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* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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* when we are looking for LwPolylines.
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* @return ArrayList This ArrayList has two parts. First is an int value that represents
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* the new offset, and second is the double value
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*/
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public static ArrayList getDefaultDouble(int[] data, int offset, double defVal) throws RuntimeException {
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int flags = ((Integer) getBits(data, 2, offset)).intValue();
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int read = 2;
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double val;
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if (flags == 0x0) {
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val = defVal;
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} else {
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int _offset = offset + 2;
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if (flags == 0x3) {
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byte[] bytes = (byte[]) getBits(data, 64, _offset);
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ByteBuffer bb = ByteBuffer.wrap(bytes);
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bb.order(ByteOrder.LITTLE_ENDIAN);
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val = bb.getDouble();
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read = 66;
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} else {
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byte[] dstrArrayAux = new byte[8];
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int[] doubleOffset = new int[] { 0 };
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ByteUtils.doubleToBytes(defVal, dstrArrayAux, doubleOffset);
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byte[] dstrArrayAuxx = new byte[8];
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dstrArrayAuxx[0] = dstrArrayAux[7];
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dstrArrayAuxx[1] = dstrArrayAux[6];
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dstrArrayAuxx[2] = dstrArrayAux[5];
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dstrArrayAuxx[3] = dstrArrayAux[4];
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dstrArrayAuxx[4] = dstrArrayAux[3];
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dstrArrayAuxx[5] = dstrArrayAux[2];
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dstrArrayAuxx[6] = dstrArrayAux[1];
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dstrArrayAuxx[7] = dstrArrayAux[0];
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int[] dstrArrayAuxxx = new int[8];
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for (int i = 0; i < dstrArrayAuxxx.length; i++) {
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dstrArrayAuxxx[i] = ByteUtils.getUnsigned(dstrArrayAuxx[i]);
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}
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byte[] dstrArray = new byte[8];
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for (int i = 0; i < dstrArray.length; i++) {
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dstrArray[i] = (byte) dstrArrayAuxxx[i];
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}
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if (flags == 0x1) {
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byte[] ddArray = (byte[]) getBits(data, 32, _offset);
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dstrArray[0] = ddArray[0];
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dstrArray[1] = ddArray[1];
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dstrArray[2] = ddArray[2];
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dstrArray[3] = ddArray[3];
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read = 34;
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} else {
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byte[] ddArray = (byte[]) getBits(data, 48, _offset);
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dstrArray[4] = ddArray[0];
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dstrArray[5] = ddArray[1];
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dstrArray[0] = ddArray[2];
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dstrArray[1] = ddArray[3];
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dstrArray[2] = ddArray[4];
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dstrArray[3] = ddArray[5];
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read = 50;
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}
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ByteBuffer bb = ByteBuffer.wrap(dstrArray);
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bb.order(ByteOrder.LITTLE_ENDIAN);
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val = bb.getDouble();
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}
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}
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ArrayList v = new ArrayList();
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v.add(new Integer(offset + read));
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v.add(new Double(val));
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return v;
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}
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/**
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* Read a double value from a group of unsigned bytes
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*
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* @param data Array of unsigned bytes obtained from the DWG binary file
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* @param offset The current bit offset where the value begins
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* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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* when we are looking for LwPolylines.
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* @return ArrayList This ArrayList has two parts. First is an int value that represents
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* the new offset, and second is the double value
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*/
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public static ArrayList getBitDouble(int[] data, int offset) throws RuntimeException {
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ArrayList v = new ArrayList();
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int type = ((Integer) getBits(data, 2, offset)).intValue();
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int read = 2;
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double val = 0.0;
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if (type == 0x00) {
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byte[] bytes = (byte[]) getBits(data, 64, (offset + 2));
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ByteBuffer bb = ByteBuffer.wrap(bytes);
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bb.order(ByteOrder.LITTLE_ENDIAN);
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val = bb.getDouble();
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read = 66;
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} else if (type == 0x01) {
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val = 1.0;
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} else if (type == 0x02) {
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val = 0.0;
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} else {
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System.out.println("Bad type " + type + " at bit offset: " + offset);
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286 |
}
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v.add(new Integer(offset + read));
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288 |
v.add(new Double(val));
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return v;
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}
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291 |
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292 |
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293 |
/**
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* Read a double value from a group of unsigned bytes
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*
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* @param data Array of unsigned bytes obtained from the DWG binary file
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* @param offset The current bit offset where the value begins
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298 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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* when we are looking for LwPolylines.
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300 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
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301 |
* the new offset, and second is the double value
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302 |
*/
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303 |
public static ArrayList getRawDouble(int[] data, int offset) throws RuntimeException {
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byte[] bytes = (byte[]) getBits(data, 64, offset);
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305 |
ByteBuffer bb = ByteBuffer.wrap(bytes);
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bb.order(ByteOrder.LITTLE_ENDIAN);
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double val = bb.getDouble();
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308 |
ArrayList v = new ArrayList();
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309 |
v.add(new Integer(offset + 64));
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310 |
v.add(new Double(val));
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311 |
return v;
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312 |
}
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313 |
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314 |
/**
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315 |
* Read a short value from a group of unsigned bytes
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316 |
*
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317 |
* @param data Array of unsigned bytes obtained from the DWG binary file
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318 |
* @param offset The current bit offset where the value begins
|
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319 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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320 |
* when we are looking for LwPolylines.
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321 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
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322 |
* the new offset, and second is the short value
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323 |
*/
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324 |
public static ArrayList getBitShort(int[] data, int offset) throws RuntimeException {
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325 |
ArrayList v = new ArrayList();
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326 |
int type = ((Integer) getBits(data, 2, offset)).intValue();
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327 |
int read = 2;
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328 |
int val = 0;
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329 |
if (type == 0x00) {
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330 |
byte[] bytes = (byte[]) getBits(data, 16, (offset + 2));
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331 |
ByteBuffer bb = ByteBuffer.wrap(bytes);
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332 |
bb.order(ByteOrder.LITTLE_ENDIAN);
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|
333 |
val = bb.getShort();
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|
334 |
read = 18;
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|
335 |
} else if (type == 0x01) {
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|
336 |
val = ((Integer) getBits(data, 8, (offset + 2))).intValue();
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|
337 |
read = 10;
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|
338 |
} else if (type == 0x02) {
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|
339 |
val = 0;
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|
340 |
} else if (type == 0x03) {
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|
341 |
val = 256;
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342 |
}
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343 |
v.add(new Integer(offset + read));
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344 |
v.add(new Integer(val));
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|
345 |
return v;
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|
346 |
}
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|
347 |
|
|
348 |
/**
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|
349 |
* Read a short value from a group of unsigned bytes
|
|
350 |
*
|
|
351 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
352 |
* @param offset The current bit offset where the value begins
|
|
353 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
|
354 |
* when we are looking for LwPolylines.
|
|
355 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
|
|
356 |
* the new offset, and second is the short value
|
|
357 |
*/
|
|
358 |
public static ArrayList getRawShort(int[] data, int offset) throws RuntimeException {
|
|
359 |
byte[] bytes = (byte[]) getBits(data, 16, offset);
|
|
360 |
ByteBuffer bb = ByteBuffer.wrap(bytes);
|
|
361 |
bb.order(ByteOrder.LITTLE_ENDIAN);
|
|
362 |
int val = bb.getShort();
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|
363 |
ArrayList v = new ArrayList();
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|
364 |
v.add(new Integer(offset + 16));
|
|
365 |
v.add(new Integer(val));
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|
366 |
return v;
|
|
367 |
}
|
|
368 |
|
|
369 |
/**
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|
370 |
* Read a long value from a group of unsigned bytes
|
|
371 |
*
|
|
372 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
373 |
* @param offset The current bit offset where the value begins
|
|
374 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
|
375 |
* when we are looking for LwPolylines.
|
|
376 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
|
|
377 |
* the new offset, and second is the long value
|
|
378 |
*/
|
|
379 |
public static ArrayList getBitLong(int[] data, int offset) throws RuntimeException {
|
|
380 |
int type = ((Integer) getBits(data, 2, offset)).intValue();
|
|
381 |
int read = 2;
|
|
382 |
int val = 0;
|
|
383 |
if (type == 0x0) {
|
|
384 |
byte[] bytes = (byte[]) getBits(data, 32, (offset + 2));
|
|
385 |
ByteBuffer bb = ByteBuffer.wrap(bytes);
|
|
386 |
bb.order(ByteOrder.LITTLE_ENDIAN);
|
|
387 |
val = bb.getInt();
|
|
388 |
read = 34;
|
|
389 |
} else if (type == 0x01) {
|
|
390 |
val = ((Integer) getBits(data, 8, (offset + 2))).intValue();
|
|
391 |
read = 10;
|
|
392 |
} else if (type == 0x02) {
|
|
393 |
val = 0;
|
|
394 |
} else {
|
|
395 |
System.out.println("Bad type at bit offset: " + offset);
|
|
396 |
}
|
|
397 |
ArrayList v = new ArrayList();
|
|
398 |
v.add(new Integer(offset + read));
|
|
399 |
v.add(new Integer(val));
|
|
400 |
return v;
|
|
401 |
}
|
|
402 |
|
|
403 |
/**
|
|
404 |
* Read a long value from a group of unsigned bytes
|
|
405 |
*
|
|
406 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
407 |
* @param offset The current bit offset where the value begins
|
|
408 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
|
409 |
* when we are looking for LwPolylines.
|
|
410 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
|
|
411 |
* the new offset, and second is the long value
|
|
412 |
* @throws RuntimeException
|
|
413 |
*/
|
|
414 |
public static ArrayList getRawLong(int[] data, int offset) throws RuntimeException {
|
|
415 |
ArrayList v = new ArrayList();
|
|
416 |
// _val = struct.unpack('<l', _long)[0]
|
|
417 |
byte[] bytes = (byte[]) getBits(data, 32, offset);
|
|
418 |
ByteBuffer bb = ByteBuffer.wrap(bytes);
|
|
419 |
bb.order(ByteOrder.LITTLE_ENDIAN);
|
|
420 |
int val = bb.getInt();
|
|
421 |
v.add(new Integer(offset + 32));
|
|
422 |
v.add(new Integer(val));
|
|
423 |
return v;
|
|
424 |
}
|
|
425 |
|
|
426 |
/**
|
|
427 |
* Read a char value from a group of unsigned bytes
|
|
428 |
*
|
|
429 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
430 |
* @param offset The current bit offset where the value begins
|
|
431 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
|
432 |
* when we are looking for LwPolylines.
|
|
433 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
|
|
434 |
* the new offset, and second is the char value
|
|
435 |
*/
|
|
436 |
public static ArrayList getRawChar(int[] data, int offset) throws RuntimeException {
|
|
437 |
int charr = ((Integer) getBits(data, 8, offset)).intValue();
|
|
438 |
ArrayList v = new ArrayList();
|
|
439 |
v.add(new Integer(offset + 8));
|
|
440 |
v.add(new Integer(charr));
|
|
441 |
return v;
|
|
442 |
}
|
|
443 |
|
|
444 |
/**
|
|
445 |
* Read a char value from a group of unsigned bytes
|
|
446 |
*
|
|
447 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
448 |
* @param offset The current bit offset where the value begins
|
|
449 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
|
450 |
* when we are looking for LwPolylines.
|
|
451 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
|
|
452 |
* the new offset, and second is the char value
|
|
453 |
*/
|
|
454 |
public static ArrayList getModularChar(int[] data, int offset) throws RuntimeException {
|
|
455 |
int val = 0;
|
|
456 |
ArrayList bytes = new ArrayList();
|
|
457 |
boolean read = true;
|
|
458 |
int offsett = offset;
|
|
459 |
int fac = 1;
|
|
460 |
while (read) {
|
|
461 |
int bytee = ((Integer) getBits(data, 8, offsett)).intValue();
|
|
462 |
offsett = offsett + 8;
|
|
463 |
if ((bytee & 0x80) == 0) {
|
|
464 |
read = false;
|
|
465 |
if ((bytee & 0x40) > 0) {
|
|
466 |
fac = -1;
|
|
467 |
bytee = bytee & 0xbf;
|
|
468 |
}
|
|
469 |
}
|
|
470 |
bytes.add(new Integer(bytee & 0x7f));
|
|
471 |
}
|
|
472 |
if (bytes.size()==1) val = ((Integer)bytes.get(0)).intValue();
|
|
473 |
else if (bytes.size()==2) val = ((Integer)bytes.get(0)).intValue() | (((Integer)bytes.get(1)).intValue() << 7);
|
|
474 |
else if (bytes.size()==3) val = ((Integer)bytes.get(0)).intValue() | (((Integer)bytes.get(1)).intValue() << 7) | (((Integer)bytes.get(2)).intValue() << 14);
|
|
475 |
else if (bytes.size()==4) val = ((Integer)bytes.get(0)).intValue() | (((Integer)bytes.get(1)).intValue() << 7) | (((Integer)bytes.get(2)).intValue() << 14) | (((Integer)bytes.get(3)).intValue() << 21);
|
|
476 |
else System.out.println("Unexpected byte array length: " + bytes.size());
|
|
477 |
ArrayList v = new ArrayList();
|
|
478 |
v.add(new Integer(offsett));
|
|
479 |
v.add(new Integer(fac * val));
|
|
480 |
return v;
|
|
481 |
}
|
|
482 |
|
|
483 |
/**
|
|
484 |
* Read a String from a group of unsigned bytes
|
|
485 |
*
|
|
486 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
487 |
* @param offset The current bit offset where the value begins
|
|
488 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
|
489 |
* when we are looking for LwPolylines.
|
|
490 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
|
|
491 |
* the new offset, and second is the String
|
|
492 |
*/
|
|
493 |
public static ArrayList getTextString(int[] data, int offset) throws RuntimeException {
|
|
494 |
int bitPos = offset;
|
|
495 |
ArrayList bitShort = DwgUtil.getBitShort(data, bitPos);
|
|
496 |
int newBitPos = ((Integer) bitShort.get(0)).intValue();
|
|
497 |
int len = ((Integer) bitShort.get(1)).intValue();
|
|
498 |
bitPos = newBitPos;
|
|
499 |
int bitLen = len * 8;
|
|
500 |
Object cosa = DwgUtil.getBits(data, bitLen, bitPos);
|
|
501 |
String string;
|
|
502 |
if (cosa instanceof byte[]) {
|
|
503 |
string = new String((byte[]) cosa);
|
|
504 |
} else {
|
|
505 |
// string = ((Integer)cosa).toString();
|
|
506 |
byte[] bytes = new byte[] { ((Integer) cosa).byteValue() };
|
|
507 |
string = new String((byte[]) bytes);
|
|
508 |
}
|
|
509 |
bitPos = bitPos + bitLen;
|
|
510 |
ArrayList v = new ArrayList();
|
|
511 |
v.add(new Integer(bitPos));
|
|
512 |
v.add(string);
|
|
513 |
return v;
|
|
514 |
}
|
|
515 |
|
|
516 |
/**
|
|
517 |
* Read a CmColor from a group of unsigned bytes
|
|
518 |
*
|
|
519 |
* @param data
|
|
520 |
* Array of unsigned bytes obtained from the DWG binary file
|
|
521 |
* @param offset
|
|
522 |
* The current bit offset where the value begins
|
|
523 |
* @throws RuntimeException
|
|
524 |
* If an unexpected bit value is found in the DWG file. Occurs
|
|
525 |
* when we are looking for LwPolylines.
|
|
526 |
* @return ArrayList This ArrayList has two parts. First is an int value
|
|
527 |
* that represents the new offset, and second is the int value
|
|
528 |
* (handle of a DWG object)
|
|
529 |
*/
|
|
530 |
public static ArrayList getCmColor(int[] intData, int offset, String version) throws RuntimeException {
|
|
531 |
|
|
532 |
ArrayList v = new ArrayList();
|
|
533 |
int bitPos = offset;
|
|
534 |
List val = getBitShort(intData, bitPos);
|
|
535 |
bitPos = ((Integer) val.get(0)).intValue();
|
|
536 |
v.add((Integer) val.get(1)); //color index
|
|
537 |
|
|
538 |
//FIXME: para versiones superiores habrá que ampliar la condición
|
|
539 |
if (version.equalsIgnoreCase("Autocad R2004, R2005, R2006")){
|
|
540 |
|
|
541 |
val = getBitLong(intData, bitPos);
|
|
542 |
bitPos = ((Integer) val.get(0)).intValue();
|
|
543 |
v.add((Integer) val.get(1)); //RGB value
|
|
544 |
|
|
545 |
val = getRawChar(intData, bitPos);
|
|
546 |
bitPos = ((Integer) val.get(0)).intValue();
|
|
547 |
Integer colorByte = ((Integer) val.get(1)); //.intValue();
|
|
548 |
v.add(colorByte); //Color Byte
|
|
549 |
|
|
550 |
// Según la documentacion:
|
|
551 |
// Color Byte & 1 ==> color name follows
|
|
552 |
// Color Byte & 2 ==> book name follows
|
|
553 |
if (((colorByte.intValue() & 0x01) != 0) || ((colorByte.intValue() & 0x02) != 0)) {
|
|
554 |
val = getTextString(intData, bitPos);
|
|
555 |
bitPos = ((Integer) val.get(0)).intValue();
|
|
556 |
v.add(val.get(1));//color name or book name
|
|
557 |
} else {
|
|
558 |
v.add("");//color name or book name
|
|
559 |
}
|
|
560 |
}
|
|
561 |
|
|
562 |
v.add(0, new Integer(bitPos));
|
|
563 |
return v;
|
|
564 |
}
|
|
565 |
|
|
566 |
/**
|
|
567 |
* Read a int value (the handle of a DWG object) from a group of unsigned
|
|
568 |
* bytes
|
|
569 |
*
|
|
570 |
* @param data
|
|
571 |
* Array of unsigned bytes obtained from the DWG binary file
|
|
572 |
* @param offset
|
|
573 |
* The current bit offset where the value begins
|
|
574 |
* @throws RuntimeException
|
|
575 |
* If an unexpected bit value is found in the DWG file. Occurs
|
|
576 |
* when we are looking for LwPolylines.
|
|
577 |
* @return ArrayList This ArrayList has two parts. First is an int value
|
|
578 |
* that represents the new offset, and second is the int value
|
|
579 |
* (handle of a DWG object)
|
|
580 |
*/
|
|
581 |
public static ArrayList getHandle(int[] data, int offset)
|
|
582 |
throws RuntimeException {
|
|
583 |
ArrayList v = new ArrayList();
|
|
584 |
int code = ((Integer) DwgUtil.getBits(data, 4, offset)).intValue();
|
|
585 |
int counter = ((Integer)DwgUtil.getBits(data, 4, (offset + 4))).intValue();
|
|
586 |
int read = 8;
|
|
587 |
ArrayList hlist = new ArrayList();
|
|
588 |
if (counter > 0) {
|
|
589 |
int hlen = counter * 8;
|
|
590 |
Object handle = DwgUtil.getBits(data, hlen, (offset + 8));
|
|
591 |
read = read + hlen;
|
|
592 |
if (hlen > 8) {
|
|
593 |
byte[] handleBytes = (byte[]) handle;
|
|
594 |
int[] handleInts = new int[handleBytes.length];
|
|
595 |
// Hacerlos unsigned ...
|
|
596 |
for (int i = 0; i < handleBytes.length; i++) {
|
|
597 |
handleInts[i] = ByteUtils.getUnsigned(handleBytes[i]);
|
|
598 |
}
|
|
599 |
for (int i = 0; i < handleInts.length; i++) {
|
|
600 |
hlist.add(new Integer(handleInts[i]));
|
|
601 |
}
|
|
602 |
} else {
|
|
603 |
hlist.add(handle);
|
|
604 |
}
|
|
605 |
}
|
|
606 |
v.add(new Integer(offset + read));
|
|
607 |
v.add(new Integer(code));
|
|
608 |
v.add(new Integer(counter));
|
|
609 |
for (int i = 0; i < hlist.size(); i++) {
|
|
610 |
v.add(hlist.get(i));
|
|
611 |
}
|
|
612 |
return v;
|
|
613 |
}
|
|
614 |
|
|
615 |
/**
|
|
616 |
* Read a int value (the size of a modular short) from a ByteBuffer
|
|
617 |
*
|
|
618 |
* @param bb Data given as a ByteBuffer
|
|
619 |
* @return int Size of the modular short
|
|
620 |
*/
|
|
621 |
public static int getModularShort(ByteBuffer bb) {
|
|
622 |
ArrayList shorts = new ArrayList();
|
|
623 |
bb.order(ByteOrder.BIG_ENDIAN);
|
|
624 |
short shortt = bb.getShort();
|
|
625 |
int size = 0;
|
|
626 |
while ((shortt & 0x80) > 0) {
|
|
627 |
shorts.add(new Short(shortt));
|
|
628 |
shortt = bb.getShort();
|
|
629 |
}
|
|
630 |
shorts.add(new Short(shortt));
|
|
631 |
for (int i = 0; i < shorts.size(); i++) {
|
|
632 |
shortt = ((Short) shorts.get(i)).shortValue();
|
|
633 |
shorts.set(i, new Integer(((shortt & 0xff00) >> 8) | ((shortt & 0xff) << 8)));
|
|
634 |
}
|
|
635 |
int slen = shorts.size();
|
|
636 |
if (slen == 1) {
|
|
637 |
size = (((Integer)shorts.get(0)).intValue()) & 0x7fff;//(new Integer(((Integer)shorts.get(0)).shortValue() & 0x7fff)).byteValue();
|
|
638 |
} else if (slen == 2) {
|
|
639 |
int tmp = ((Integer) shorts.get(0)).intValue();
|
|
640 |
shorts.set(0, shorts.get(1));
|
|
641 |
shorts.set(1, new Integer(tmp));
|
|
642 |
size = (((((Integer)shorts.get(0)).intValue()) & 0x7fff) << 15) | (((((Integer)shorts.get(1)).intValue()) & 0x7fff));//(new Integer(((Integer)shorts.get(0)).shortValue() & 0x7fff)).byteValue();
|
|
643 |
} else {
|
|
644 |
System.out.println("Unexpected array length: " + slen);
|
|
645 |
}
|
|
646 |
return size;
|
|
647 |
}
|
|
648 |
|
|
649 |
/**
|
|
650 |
* Returns a set of bits from a group of unsigned bytes
|
|
651 |
*
|
|
652 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
653 |
* @param count Bit counter
|
|
654 |
* @param offset The current bit offset where the value begins
|
|
655 |
* @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
|
656 |
* when we are looking for LwPolylines.
|
|
657 |
* @return This method returns an array of bytes or an int value
|
|
658 |
*/
|
|
659 |
public static Object getBits(int[] data, int count, int offset) throws RuntimeException {
|
|
660 |
int idx = offset / 8;
|
|
661 |
int bitidx = offset % 8;
|
|
662 |
/**
|
|
663 |
* mask1: bit mask to apply to the current byte
|
|
664 |
* lshift: left shift amount of mask results
|
|
665 |
* mask2: bit mask to apply to the next byte
|
|
666 |
* rshift: right shift amount of the mask results
|
|
667 |
*/
|
|
668 |
int[][] maskTable = new int[][]{
|
|
669 |
{0xff, 0, 0x00, 0}, // bit offset == 0
|
|
670 |
{ 0x7f, 1, 0x80, 7 }, // bit offset == 1
|
|
671 |
{ 0x3f, 2, 0xc0, 6 }, // bit offset == 2
|
|
672 |
{ 0x1f, 3, 0xe0, 5 }, // bit offset == 3
|
|
673 |
{ 0x0f, 4, 0xf0, 4 }, // bit offset == 4
|
|
674 |
{ 0x07, 5, 0xf8, 3 }, // bit offset == 5
|
|
675 |
{ 0x03, 6, 0xfc, 2 }, // bit offset == 6
|
|
676 |
{ 0x01, 7, 0xfe, 1 }, // bit offset == 7
|
|
677 |
};
|
|
678 |
int mask1 = maskTable[bitidx][0];
|
|
679 |
int lsh = maskTable[bitidx][1];
|
|
680 |
int mask2 = maskTable[bitidx][2];
|
|
681 |
int rsh = maskTable[bitidx][3];
|
|
682 |
int binc = 8 - bitidx;
|
|
683 |
int read = 0;
|
|
684 |
int rem = count;
|
|
685 |
int bytee = 0x0;
|
|
686 |
ArrayList bytes = new ArrayList();
|
|
687 |
while (read < count) {
|
|
688 |
int b1 = 0;
|
|
689 |
if (rem > binc) {
|
|
690 |
b1 = (data[idx] & mask1);
|
|
691 |
read = read + binc;
|
|
692 |
rem = rem - binc;
|
|
693 |
} else {
|
|
694 |
b1 = ((data[idx] & mask1) >> (8 - bitidx - rem));
|
|
695 |
bytee = b1;
|
|
696 |
read = read + rem;
|
|
697 |
rem = 0;
|
|
698 |
}
|
|
699 |
if (read < count) {
|
|
700 |
idx = idx + 1;
|
|
701 |
if (rem > bitidx) {
|
|
702 |
int b2 = (data[idx] & mask2);
|
|
703 |
bytee = (b1 << lsh) | (b2 >> rsh);
|
|
704 |
read = read + bitidx;
|
|
705 |
rem = rem - bitidx;
|
|
706 |
} else {
|
|
707 |
int mask = maskTable[rem][2];
|
|
708 |
int b2 = data[idx] & mask;
|
|
709 |
bytee = (b1 << rem) | (b2 >> (8 - rem));
|
|
710 |
read = read + rem;
|
|
711 |
rem = 0;
|
|
712 |
}
|
|
713 |
}
|
|
714 |
if (count > 8) {
|
|
715 |
bytes.add(new Integer(bytee));
|
|
716 |
}
|
|
717 |
}
|
|
718 |
if (bytes.size() > 0) {
|
|
719 |
byte[] newBytes = new byte[bytes.size()];
|
|
720 |
for (int i = 0; i < newBytes.length; i++) {
|
|
721 |
newBytes[i] = ((Integer) bytes.get(i)).byteValue();
|
|
722 |
}
|
|
723 |
return newBytes;
|
|
724 |
}
|
|
725 |
return new Integer(bytee);
|
|
726 |
}
|
|
727 |
|
|
728 |
/**
|
|
729 |
* Test a bit obtained from a set of unsigned bytes
|
|
730 |
*
|
|
731 |
* @param data Array of unsigned bytes obtained from the DWG binary file
|
|
732 |
* @param offset The current bit offset where the value begins
|
|
733 |
* @return ArrayList This ArrayList has two parts. First is an int value that represents
|
|
734 |
* the new offset, and second is a bit flag
|
|
735 |
*/
|
|
736 |
public static ArrayList testBit(int[] data, int offset) {
|
|
737 |
int idx = offset / 8;
|
|
738 |
int bitidx = offset % 8;
|
|
739 |
int mask = 0x1 << (7 - bitidx);
|
|
740 |
boolean val = false;
|
|
741 |
if ((data[idx] & mask) > 0) val = true;
|
|
742 |
ArrayList v = new ArrayList();
|
|
743 |
v.add(new Integer(offset + 1));
|
|
744 |
v.add(new Boolean(val));
|
|
745 |
return v;
|
|
746 |
}
|
|
747 |
|
|
748 |
/**
|
|
749 |
* Convert bytes to machine value bytes
|
|
750 |
*
|
|
751 |
* @param data Input of array of bytes
|
|
752 |
* @return int[] Output of array of machine bytes
|
|
753 |
*/
|
|
754 |
public static int[] bytesToMachineBytes(byte[] data) {
|
|
755 |
String[] dataString = new String[data.length];
|
|
756 |
int[] dataOut = new int[data.length];
|
|
757 |
for (int i = 0; i < data.length; i++) {
|
|
758 |
dataString[i] = HexUtil.bytesToHex(new byte[] { data[i] });
|
|
759 |
Integer dataInt = Integer.decode("0x" + dataString[i]);
|
|
760 |
dataOut[i] = dataInt.intValue();
|
|
761 |
}
|
|
762 |
return dataOut;
|
|
763 |
}
|
|
764 |
|
|
765 |
/**
|
|
766 |
* It receives the list procedent from getHandle method, and return the
|
|
767 |
* handle as int
|
|
768 |
*
|
|
769 |
* */
|
|
770 |
public static int handleToInt(List fromGetHandle) {
|
|
771 |
|
|
772 |
int[] handle = new int[fromGetHandle.size() - 1];
|
|
773 |
for (int j = 1; j < fromGetHandle.size(); j++) {
|
|
774 |
handle[j - 1] = ((Integer) fromGetHandle.get(j)).intValue();
|
|
775 |
}
|
|
776 |
ArrayList handleVect = new ArrayList();
|
|
777 |
for (int i = 0; i < handle.length; i++) {
|
|
778 |
handleVect.add(new Integer(handle[i]));
|
|
779 |
}
|
|
780 |
return DwgUtil.handleBinToHandleInt(handleVect);
|
|
781 |
|
|
782 |
|
|
783 |
}
|
|
784 |
/**
|
|
785 |
* Obtain the int value of a handle given in binary format
|
|
786 |
*
|
|
787 |
* @param layerHandle Handle in binary format
|
|
788 |
* @return int Int value of the handle
|
|
789 |
*/
|
|
790 |
public static int handleBinToHandleInt(ArrayList layerHandle) {
|
|
791 |
byte[] layerBytes = new byte[] { 0, 0, 0, 0 };
|
|
792 |
if (layerHandle.size()>2) layerBytes[3] = (byte)((Integer)layerHandle.get(2)).intValue();
|
|
793 |
if (layerHandle.size() > 3) {
|
|
794 |
layerBytes[3] = (byte) ((Integer) layerHandle.get(3)).intValue();
|
|
795 |
layerBytes[2] = (byte) ((Integer) layerHandle.get(2)).intValue();
|
|
796 |
}
|
|
797 |
if (layerHandle.size() > 4) {
|
|
798 |
layerBytes[3] = (byte) ((Integer) layerHandle.get(4)).intValue();
|
|
799 |
layerBytes[2] = (byte) ((Integer) layerHandle.get(3)).intValue();
|
|
800 |
layerBytes[1] = (byte) ((Integer) layerHandle.get(2)).intValue();
|
|
801 |
}
|
|
802 |
if (layerHandle.size() > 5) {
|
|
803 |
layerBytes[3] = (byte) ((Integer) layerHandle.get(5)).intValue();
|
|
804 |
layerBytes[2] = (byte) ((Integer) layerHandle.get(4)).intValue();
|
|
805 |
layerBytes[1] = (byte) ((Integer) layerHandle.get(3)).intValue();
|
|
806 |
layerBytes[0] = (byte) ((Integer) layerHandle.get(2)).intValue();
|
|
807 |
}
|
|
808 |
int layer = ByteUtils.bytesToInt(layerBytes, new int[] { 0 });
|
|
809 |
return layer;
|
|
810 |
}
|
|
811 |
|
|
812 |
/*
|
|
813 |
* TODO Ver si esto es necesario
|
|
814 |
* */
|
|
815 |
public static int[] toIntArray(byte[] bytes) {
|
|
816 |
String[] dataMachValString = new String[bytes.length];
|
|
817 |
int[] data = new int[bytes.length];
|
|
818 |
for (int i = 0; i < bytes.length; i++) {
|
|
819 |
dataMachValString[i] = HexUtil.bytesToHex(new byte[] { bytes[i] });
|
|
820 |
Integer dataMachValShort = Integer.decode("0x" + dataMachValString[i]);
|
|
821 |
data[i] = dataMachValShort.byteValue();
|
|
822 |
data[i] = ByteUtils.getUnsigned((byte) data[i]);
|
|
823 |
}// for
|
|
824 |
return data;
|
|
825 |
|
|
826 |
}
|
|
827 |
}
|