svn-gvsig-desktop / trunk / libraries / libDwg / src / com / iver / cit / jdwglib / dwg / DwgUtil.java @ 11328
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1 | 2896 | jmorell | /* jdwglib. Java Library for reading Dwg files.
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2 | *
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3 | * Author: Jose Morell Rama (jose.morell@gmail.com).
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4 | * Port from the Pythoncad Dwg library by Art Haas.
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5 | *
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6 | * Copyright (C) 2005 Jose Morell, IVER TI S.A. and Generalitat Valenciana
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7 | *
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8 | * This program is free software; you can redistribute it and/or
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9 | * modify it under the terms of the GNU General Public License
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10 | * as published by the Free Software Foundation; either version 2
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11 | * of the License, or (at your option) any later version.
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12 | *
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13 | * This program is distributed in the hope that it will be useful,
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 | * GNU General Public License for more details.
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17 | *
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18 | * You should have received a copy of the GNU General Public License
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19 | * along with this program; if not, write to the Free Software
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20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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21 | *
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22 | * For more information, contact:
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23 | *
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24 | * Jose Morell (jose.morell@gmail.com)
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25 | *
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26 | * or
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27 | *
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28 | * IVER TI S.A.
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29 | * C/Salamanca, 50
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30 | * 46005 Valencia
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31 | * Spain
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32 | * +34 963163400
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33 | * dac@iver.es
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34 | */
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35 | package com.iver.cit.jdwglib.dwg; |
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36 | |||
37 | import java.nio.ByteBuffer; |
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38 | import java.nio.ByteOrder; |
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39 | 7178 | azabala | import java.util.ArrayList; |
40 | 9873 | azabala | import java.util.List; |
41 | 2896 | jmorell | |
42 | import com.iver.cit.gvsig.fmap.drivers.dgn.ByteUtils; |
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43 | |||
44 | import freenet.support.HexUtil; |
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45 | |||
46 | /**
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47 | * The DwgUtil class contains the essential set of functions for reading bitstreams
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48 | * in DWG files
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49 | *
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50 | * @author jmorell
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51 | */
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52 | public final class DwgUtil { |
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53 | |||
54 | /**
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55 | * Read the extended data for a DWG object
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56 | * Don't use in this version. Serious bugs detected
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57 | *
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58 | * @param data Array of unsigned bytes obtained from the DWG binary file
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59 | * @param offset The current bit offset where the value begins
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60 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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61 | 2896 | jmorell | * when we are looking for LwPolylines.
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62 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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63 | 2896 | jmorell | * the new offset, and second is the extended data of a DWG object
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64 | */
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65 | 10054 | azabala | public static ArrayList readExtendedData(int[] data, int offset) throws RuntimeException { |
66 | 2896 | jmorell | int bitPos = offset;
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67 | 7178 | azabala | ArrayList extData = new ArrayList(); |
68 | 2896 | jmorell | while (true) { |
69 | int newBitPos = ((Integer)getBitShort(data, bitPos).get(0)).intValue(); |
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70 | int size = ((Integer)getBitShort(data, bitPos).get(1)).intValue(); |
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71 | bitPos = newBitPos; |
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72 | if (size==0) { |
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73 | break;
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74 | } |
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75 | 7178 | azabala | newBitPos = ((Integer)((ArrayList)getHandle(data, bitPos)).get(0)).intValue(); |
76 | 2896 | jmorell | // TODO: Esto no es correcto. Repasar ...
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77 | 7178 | azabala | int handle = ((Integer)((ArrayList)getHandle(data, bitPos)).get(1)).intValue(); |
78 | 2896 | jmorell | bitPos = newBitPos; |
79 | 7178 | azabala | ArrayList eedata = new ArrayList(); |
80 | 2896 | jmorell | while (size>0) { |
81 | newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue(); |
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82 | int cb = ((Integer)getRawChar(data, bitPos).get(1)).intValue(); |
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83 | bitPos = newBitPos; |
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84 | size = size-1;
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85 | if (cb==0x0) { |
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86 | newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue(); |
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87 | int len = ((Integer)getRawChar(data, bitPos).get(1)).intValue(); |
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88 | bitPos = newBitPos; |
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89 | newBitPos = ((Integer)getRawShort(data, bitPos).get(0)).intValue(); |
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90 | int cp = ((Integer)getRawShort(data, bitPos).get(1)).intValue(); |
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91 | bitPos = newBitPos; |
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92 | 7178 | azabala | ArrayList chars = new ArrayList(); |
93 | 2896 | jmorell | for (int i=0; i<len; i++) { |
94 | newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue(); |
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95 | int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue(); |
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96 | bitPos = newBitPos; |
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97 | // ?int o char?
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98 | chars.add(new Integer(charr)); |
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99 | } |
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100 | // Incorrecto. Repasar ...
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101 | eedata.add(chars); |
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102 | size = size-len-3;
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103 | } else if (cb==0x1) { |
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104 | System.out.println("Invalid EXX code byte: 0x1"); |
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105 | } else if (cb==0x2) { |
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106 | newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue(); |
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107 | int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue(); |
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108 | bitPos = newBitPos; |
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109 | if (charr==0x0) { |
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110 | eedata.add("{");
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111 | } else if (charr==0x1) { |
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112 | eedata.add("}");
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113 | } else {
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114 | System.out.println("Unexpected EXX char: " + charr); |
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115 | } |
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116 | size = size - 1;
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117 | } else if (cb==0x3 || cb==0x5) { |
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118 | 7178 | azabala | ArrayList chars = new ArrayList(); |
119 | 2896 | jmorell | for (int i=0; i<8; i++) { |
120 | newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue(); |
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121 | int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue(); |
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122 | bitPos = newBitPos; |
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123 | chars.add(new Integer(charr)); |
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124 | } |
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125 | eedata.add(chars); |
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126 | size = size - 8;
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127 | } else if (cb==0x4) { |
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128 | newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue(); |
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129 | int len = ((Integer)getRawChar(data, bitPos).get(1)).intValue(); |
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130 | bitPos = newBitPos; |
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131 | 7178 | azabala | ArrayList chars = new ArrayList(); |
132 | 2896 | jmorell | for (int i=0; i<len; i++) { |
133 | newBitPos = ((Integer)getRawChar(data, bitPos).get(0)).intValue(); |
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134 | int charr = ((Integer)getRawChar(data, bitPos).get(1)).intValue(); |
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135 | bitPos = newBitPos; |
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136 | chars.add(new Integer(charr)); |
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137 | } |
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138 | eedata.add(chars); |
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139 | size = size - len -1;
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140 | } else if (0xa<=cb && cb<=0xd) { |
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141 | 7178 | azabala | newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue(); |
142 | double d1 = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue(); |
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143 | 2896 | jmorell | bitPos = newBitPos; |
144 | 7178 | azabala | newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue(); |
145 | double d2 = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue(); |
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146 | 2896 | jmorell | bitPos = newBitPos; |
147 | 7178 | azabala | newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue(); |
148 | double d3 = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue(); |
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149 | 2896 | jmorell | bitPos = newBitPos; |
150 | eedata.add(new double[]{d1, d2, d3}); |
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151 | size = size - 24;
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152 | } else if (0x28<=cb && cb<=0x2a) { |
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153 | 7178 | azabala | newBitPos = ((Integer)((ArrayList)getRawDouble(data, bitPos)).get(0)).intValue(); |
154 | double d = ((Double)((ArrayList)getRawDouble(data, bitPos)).get(1)).doubleValue(); |
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155 | 2896 | jmorell | bitPos = newBitPos; |
156 | eedata.add(new Double(d)); |
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157 | size=size-8;
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158 | } else if (cb==0x46) { |
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159 | newBitPos = ((Integer)getRawShort(data, bitPos).get(0)).intValue(); |
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160 | int shortt = ((Integer)getRawShort(data, bitPos).get(1)).intValue(); |
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161 | bitPos = newBitPos; |
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162 | eedata.add(new Integer(shortt)); |
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163 | size=size-2;
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164 | } else if (cb==0x47) { |
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165 | newBitPos = ((Integer)getRawLong(data, bitPos).get(0)).intValue(); |
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166 | int longg = ((Integer)getRawLong(data, bitPos).get(1)).intValue(); |
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167 | bitPos = newBitPos; |
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168 | eedata.add(new Integer(longg)); |
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169 | size=size-4;
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170 | } else {
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171 | System.out.println("Unexpected code byte: " + cb); |
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172 | } |
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173 | } |
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174 | 7178 | azabala | ArrayList v = new ArrayList(); |
175 | 2896 | jmorell | //v.add(handle, eedata);
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176 | extData.add(v); |
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177 | } |
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178 | 7178 | azabala | ArrayList v = new ArrayList(); |
179 | 2896 | jmorell | v.add(new Integer(bitPos)); |
180 | v.add(extData); |
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181 | return v;
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182 | } |
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183 | /**
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184 | * Read a double value from a group of unsigned bytes and a default double
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185 | *
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186 | * @param data Array of unsigned bytes obtained from the DWG binary file
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187 | * @param offset The current bit offset where the value begins
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188 | * @param defVal Default double value
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189 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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190 | 2896 | jmorell | * when we are looking for LwPolylines.
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191 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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192 | 2896 | jmorell | * the new offset, and second is the double value
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193 | */
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194 | 10054 | azabala | public static ArrayList getDefaultDouble(int[] data, int offset, double defVal) throws RuntimeException { |
195 | 2896 | jmorell | int flags = ((Integer)getBits(data, 2, offset)).intValue(); |
196 | int read = 2; |
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197 | double val;
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198 | if (flags==0x0) { |
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199 | val = defVal; |
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200 | } else {
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201 | int _offset = offset + 2; |
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202 | if (flags==0x3) { |
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203 | byte[] bytes = (byte[])getBits(data, 64, _offset); |
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204 | ByteBuffer bb = ByteBuffer.wrap(bytes); |
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205 | bb.order(ByteOrder.LITTLE_ENDIAN);
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206 | val = bb.getDouble(); |
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207 | read = 66;
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208 | } else {
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209 | byte[] dstrArrayAux = new byte[8]; |
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210 | int[] doubleOffset = new int[]{0}; |
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211 | ByteUtils.doubleToBytes(defVal, dstrArrayAux, doubleOffset); |
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212 | byte[] dstrArrayAuxx = new byte[8]; |
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213 | dstrArrayAuxx[0] = dstrArrayAux[7]; |
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214 | dstrArrayAuxx[1] = dstrArrayAux[6]; |
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215 | dstrArrayAuxx[2] = dstrArrayAux[5]; |
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216 | dstrArrayAuxx[3] = dstrArrayAux[4]; |
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217 | dstrArrayAuxx[4] = dstrArrayAux[3]; |
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218 | dstrArrayAuxx[5] = dstrArrayAux[2]; |
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219 | dstrArrayAuxx[6] = dstrArrayAux[1]; |
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220 | dstrArrayAuxx[7] = dstrArrayAux[0]; |
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221 | int[] dstrArrayAuxxx = new int[8]; |
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222 | for (int i=0;i<dstrArrayAuxxx.length;i++) { |
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223 | dstrArrayAuxxx[i] = ByteUtils.getUnsigned(dstrArrayAuxx[i]); |
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224 | } |
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225 | byte[] dstrArray = new byte[8]; |
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226 | for (int i=0;i<dstrArray.length;i++) { |
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227 | dstrArray[i] = (byte)dstrArrayAuxxx[i];
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228 | } |
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229 | if (flags==0x1) { |
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230 | byte[] ddArray = (byte[])getBits(data, 32, _offset); |
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231 | dstrArray[0] = ddArray[0]; |
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232 | dstrArray[1] = ddArray[1]; |
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233 | dstrArray[2] = ddArray[2]; |
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234 | dstrArray[3] = ddArray[3]; |
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235 | read = 34;
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236 | } else {
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237 | byte[] ddArray = (byte[])getBits(data, 48, _offset); |
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238 | dstrArray[4] = ddArray[0]; |
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239 | dstrArray[5] = ddArray[1]; |
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240 | dstrArray[0] = ddArray[2]; |
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241 | dstrArray[1] = ddArray[3]; |
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242 | dstrArray[2] = ddArray[4]; |
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243 | dstrArray[3] = ddArray[5]; |
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244 | read = 50;
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245 | } |
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246 | ByteBuffer bb = ByteBuffer.wrap(dstrArray); |
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247 | bb.order(ByteOrder.LITTLE_ENDIAN);
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248 | val = bb.getDouble(); |
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249 | } |
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250 | } |
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251 | 7178 | azabala | ArrayList v = new ArrayList(); |
252 | 2896 | jmorell | v.add(new Integer(offset+read)); |
253 | v.add(new Double(val)); |
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254 | return v;
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255 | } |
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256 | /**
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257 | * Read a double value from a group of unsigned bytes
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258 | *
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259 | * @param data Array of unsigned bytes obtained from the DWG binary file
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260 | * @param offset The current bit offset where the value begins
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261 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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262 | 2896 | jmorell | * when we are looking for LwPolylines.
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263 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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264 | 2896 | jmorell | * the new offset, and second is the double value
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265 | */
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266 | 10054 | azabala | public static ArrayList getBitDouble(int[] data, int offset) throws RuntimeException { |
267 | 7178 | azabala | ArrayList v = new ArrayList(); |
268 | 2896 | jmorell | int type = ((Integer)getBits(data, 2, offset)).intValue(); |
269 | int read = 2; |
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270 | double val = 0.0; |
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271 | if (type==0x00) { |
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272 | byte[] bytes = (byte[])getBits(data, 64, (offset+2)); |
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273 | ByteBuffer bb = ByteBuffer.wrap(bytes); |
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274 | bb.order(ByteOrder.LITTLE_ENDIAN);
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275 | val = bb.getDouble(); |
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276 | read = 66;
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277 | } else if (type==0x01) { |
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278 | val = 1.0;
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279 | } else if (type==0x02) { |
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280 | val = 0.0;
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281 | } else {
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282 | 10021 | fdiaz | System.out.println("Bad type " + type + " at bit offset: " + offset); |
283 | 2896 | jmorell | } |
284 | v.add(new Integer(offset+read)); |
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285 | v.add(new Double(val)); |
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286 | return v;
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287 | } |
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288 | /**
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289 | * Read a double value from a group of unsigned bytes
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290 | *
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291 | * @param data Array of unsigned bytes obtained from the DWG binary file
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292 | * @param offset The current bit offset where the value begins
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293 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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294 | 2896 | jmorell | * when we are looking for LwPolylines.
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295 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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296 | 2896 | jmorell | * the new offset, and second is the double value
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297 | */
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298 | 10054 | azabala | public static ArrayList getRawDouble(int[] data, int offset) throws RuntimeException { |
299 | 2896 | jmorell | byte[] bytes = (byte[])getBits(data, 64, offset); |
300 | ByteBuffer bb = ByteBuffer.wrap(bytes); |
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301 | bb.order(ByteOrder.LITTLE_ENDIAN);
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302 | double val = bb.getDouble();
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303 | 7178 | azabala | ArrayList v = new ArrayList(); |
304 | 2896 | jmorell | v.add(new Integer(offset+64)); |
305 | v.add(new Double(val)); |
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306 | return v;
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307 | } |
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308 | /**
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309 | * Read a short value from a group of unsigned bytes
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310 | *
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311 | * @param data Array of unsigned bytes obtained from the DWG binary file
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312 | * @param offset The current bit offset where the value begins
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313 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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314 | 2896 | jmorell | * when we are looking for LwPolylines.
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315 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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316 | 2896 | jmorell | * the new offset, and second is the short value
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317 | */
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318 | 10054 | azabala | public static ArrayList getBitShort(int[] data, int offset) throws RuntimeException { |
319 | 7178 | azabala | ArrayList v = new ArrayList(); |
320 | 2896 | jmorell | int type = ((Integer)getBits(data, 2, offset)).intValue(); |
321 | int read = 2; |
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322 | int val = 0; |
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323 | if (type==0x00) { |
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324 | byte[] bytes = (byte[])getBits(data, 16, (offset+2)); |
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325 | ByteBuffer bb = ByteBuffer.wrap(bytes); |
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326 | bb.order(ByteOrder.LITTLE_ENDIAN);
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327 | val = bb.getShort(); |
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328 | read = 18;
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329 | } else if (type==0x01) { |
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330 | val = ((Integer)getBits(data, 8, (offset+2))).intValue(); |
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331 | read = 10;
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332 | } else if (type==0x02) { |
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333 | val = 0;
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334 | } else if (type==0x03) { |
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335 | val = 256;
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336 | } |
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337 | v.add(new Integer(offset+read)); |
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338 | v.add(new Integer(val)); |
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339 | return v;
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340 | } |
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341 | /**
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342 | * Read a short value from a group of unsigned bytes
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343 | *
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344 | * @param data Array of unsigned bytes obtained from the DWG binary file
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345 | * @param offset The current bit offset where the value begins
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346 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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347 | 2896 | jmorell | * when we are looking for LwPolylines.
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348 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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349 | 2896 | jmorell | * the new offset, and second is the short value
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350 | */
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351 | 10054 | azabala | public static ArrayList getRawShort(int[] data, int offset) throws RuntimeException { |
352 | 2896 | jmorell | byte[] bytes = (byte[])getBits(data, 16, offset); |
353 | ByteBuffer bb = ByteBuffer.wrap(bytes); |
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354 | bb.order(ByteOrder.LITTLE_ENDIAN);
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355 | int val = bb.getShort();
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356 | 7178 | azabala | ArrayList v = new ArrayList(); |
357 | 2896 | jmorell | v.add(new Integer(offset+16)); |
358 | v.add(new Integer(val)); |
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359 | return v;
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360 | } |
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361 | /**
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362 | * Read a long value from a group of unsigned bytes
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363 | *
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364 | * @param data Array of unsigned bytes obtained from the DWG binary file
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365 | * @param offset The current bit offset where the value begins
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366 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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367 | 2896 | jmorell | * when we are looking for LwPolylines.
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368 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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369 | 2896 | jmorell | * the new offset, and second is the long value
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370 | */
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371 | 10054 | azabala | public static ArrayList getBitLong(int[] data, int offset) throws RuntimeException { |
372 | 2896 | jmorell | int type = ((Integer)getBits(data, 2, offset)).intValue(); |
373 | int read = 2; |
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374 | int val = 0; |
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375 | if (type==0x0) { |
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376 | byte[] bytes = (byte[])getBits(data, 32, (offset+2)); |
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377 | ByteBuffer bb = ByteBuffer.wrap(bytes); |
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378 | bb.order(ByteOrder.LITTLE_ENDIAN);
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379 | val = bb.getInt(); |
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380 | read = 34;
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381 | } else if (type==0x01) { |
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382 | val = ((Integer)getBits(data, 8, (offset+2))).intValue(); |
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383 | read = 10;
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384 | } else if (type==0x02) { |
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385 | val = 0;
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386 | } else {
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387 | System.out.println("Bad type at bit offset: " + offset); |
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388 | } |
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389 | 7178 | azabala | ArrayList v = new ArrayList(); |
390 | 2896 | jmorell | v.add(new Integer(offset+read)); |
391 | v.add(new Integer(val)); |
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392 | return v;
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393 | } |
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394 | /**
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395 | * Read a long value from a group of unsigned bytes
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396 | *
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397 | * @param data Array of unsigned bytes obtained from the DWG binary file
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398 | * @param offset The current bit offset where the value begins
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399 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
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400 | 2896 | jmorell | * when we are looking for LwPolylines.
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401 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
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402 | 2896 | jmorell | * the new offset, and second is the long value
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403 | 10054 | azabala | * @throws RuntimeException
|
404 | 2896 | jmorell | */
|
405 | 10054 | azabala | public static ArrayList getRawLong(int[] data, int offset) throws RuntimeException { |
406 | 7178 | azabala | ArrayList v = new ArrayList(); |
407 | 2896 | jmorell | // _val = struct.unpack('<l', _long)[0]
|
408 | 9978 | fdiaz | byte[] bytes = (byte[])getBits(data, 32, offset); |
409 | ByteBuffer bb = ByteBuffer.wrap(bytes); |
||
410 | bb.order(ByteOrder.LITTLE_ENDIAN);
|
||
411 | int val = bb.getInt();
|
||
412 | 2896 | jmorell | v.add(new Integer(offset+32)); |
413 | v.add(new Integer(val)); |
||
414 | return v;
|
||
415 | } |
||
416 | /**
|
||
417 | * Read a char value from a group of unsigned bytes
|
||
418 | *
|
||
419 | * @param data Array of unsigned bytes obtained from the DWG binary file
|
||
420 | * @param offset The current bit offset where the value begins
|
||
421 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
422 | 2896 | jmorell | * when we are looking for LwPolylines.
|
423 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
|
424 | 2896 | jmorell | * the new offset, and second is the char value
|
425 | */
|
||
426 | 10054 | azabala | public static ArrayList getRawChar(int[] data, int offset) throws RuntimeException { |
427 | 2896 | jmorell | int charr = ((Integer)getBits(data, 8, offset)).intValue(); |
428 | 7178 | azabala | ArrayList v = new ArrayList(); |
429 | 2896 | jmorell | v.add(new Integer(offset+8)); |
430 | v.add(new Integer(charr)); |
||
431 | return v;
|
||
432 | } |
||
433 | /**
|
||
434 | * Read a char value from a group of unsigned bytes
|
||
435 | *
|
||
436 | * @param data Array of unsigned bytes obtained from the DWG binary file
|
||
437 | * @param offset The current bit offset where the value begins
|
||
438 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
439 | 2896 | jmorell | * when we are looking for LwPolylines.
|
440 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
|
441 | 2896 | jmorell | * the new offset, and second is the char value
|
442 | */
|
||
443 | 10054 | azabala | public static ArrayList getModularChar(int[] data, int offset) throws RuntimeException { |
444 | 2896 | jmorell | int val=0; |
445 | 7178 | azabala | ArrayList bytes = new ArrayList(); |
446 | 2896 | jmorell | boolean read = true; |
447 | int offsett = offset;
|
||
448 | int fac = 1; |
||
449 | while (read) {
|
||
450 | int bytee = ((Integer)getBits(data, 8, offsett)).intValue(); |
||
451 | offsett = offsett + 8;
|
||
452 | if ((bytee & 0x80)==0) { |
||
453 | read = false;
|
||
454 | if ((bytee & 0x40)>0) { |
||
455 | fac = -1;
|
||
456 | bytee = bytee & 0xbf;
|
||
457 | } |
||
458 | } |
||
459 | bytes.add(new Integer(bytee & 0x7f)); |
||
460 | } |
||
461 | if (bytes.size()==1) val = ((Integer)bytes.get(0)).intValue(); |
||
462 | else if (bytes.size()==2) val = ((Integer)bytes.get(0)).intValue() | (((Integer)bytes.get(1)).intValue() << 7); |
||
463 | else if (bytes.size()==3) val = ((Integer)bytes.get(0)).intValue() | (((Integer)bytes.get(1)).intValue() << 7) | (((Integer)bytes.get(2)).intValue() << 14); |
||
464 | 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); |
||
465 | else System.out.println("Unexpected byte array length: " + bytes.size()); |
||
466 | 7178 | azabala | ArrayList v = new ArrayList(); |
467 | 2896 | jmorell | v.add(new Integer(offsett)); |
468 | v.add(new Integer(fac*val)); |
||
469 | return v;
|
||
470 | } |
||
471 | /**
|
||
472 | * Read a String from a group of unsigned bytes
|
||
473 | *
|
||
474 | * @param data Array of unsigned bytes obtained from the DWG binary file
|
||
475 | * @param offset The current bit offset where the value begins
|
||
476 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
477 | 2896 | jmorell | * when we are looking for LwPolylines.
|
478 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
|
479 | 2896 | jmorell | * the new offset, and second is the String
|
480 | */
|
||
481 | 10054 | azabala | public static ArrayList getTextString(int[] data, int offset) throws RuntimeException { |
482 | 2896 | jmorell | int bitPos = offset;
|
483 | 9978 | fdiaz | ArrayList bitShort = DwgUtil.getBitShort(data, bitPos);
|
484 | int newBitPos = ((Integer)bitShort.get(0)).intValue(); |
||
485 | int len = ((Integer)bitShort.get(1)).intValue(); |
||
486 | 2896 | jmorell | bitPos = newBitPos; |
487 | int bitLen = len * 8; |
||
488 | Object cosa = DwgUtil.getBits(data, bitLen, bitPos);
|
||
489 | String string;
|
||
490 | if (cosa instanceof byte[]) { |
||
491 | string = new String((byte[])cosa); |
||
492 | } else {
|
||
493 | //string = ((Integer)cosa).toString();
|
||
494 | byte[] bytes = new byte[]{((Integer)cosa).byteValue()}; |
||
495 | string = new String((byte[])bytes); |
||
496 | } |
||
497 | bitPos = bitPos + bitLen; |
||
498 | 7178 | azabala | ArrayList v = new ArrayList(); |
499 | 2896 | jmorell | v.add(new Integer(bitPos)); |
500 | v.add(string); |
||
501 | return v;
|
||
502 | } |
||
503 | /**
|
||
504 | * Read a int value (the handle of a DWG object) from a group of unsigned bytes
|
||
505 | *
|
||
506 | * @param data Array of unsigned bytes obtained from the DWG binary file
|
||
507 | * @param offset The current bit offset where the value begins
|
||
508 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
509 | 2896 | jmorell | * when we are looking for LwPolylines.
|
510 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
|
511 | 2896 | jmorell | * the new offset, and second is the int value (handle of a DWG object)
|
512 | */
|
||
513 | 10054 | azabala | public static ArrayList getHandle(int[] data, int offset) throws RuntimeException { |
514 | 7178 | azabala | ArrayList v = new ArrayList(); |
515 | 2896 | jmorell | int code = ((Integer)DwgUtil.getBits(data, 4, offset)).intValue(); |
516 | int counter = ((Integer)DwgUtil.getBits(data, 4, (offset + 4))).intValue(); |
||
517 | int read = 8; |
||
518 | 7178 | azabala | ArrayList hlist = new ArrayList(); |
519 | 2896 | jmorell | if (counter>0) { |
520 | int hlen = counter * 8; |
||
521 | Object handle = DwgUtil.getBits(data, hlen, (offset + 8)); |
||
522 | read = read + hlen; |
||
523 | if (hlen > 8) { |
||
524 | byte[] handleBytes = (byte[])handle; |
||
525 | int[] handleInts = new int[handleBytes.length]; |
||
526 | // Hacerlos unsigned ...
|
||
527 | for (int i=0; i<handleBytes.length; i++) { |
||
528 | handleInts[i] = ByteUtils.getUnsigned(handleBytes[i]); |
||
529 | } |
||
530 | for (int i=0; i<handleInts.length; i++) { |
||
531 | hlist.add(new Integer(handleInts[i])); |
||
532 | } |
||
533 | } else {
|
||
534 | hlist.add(handle); |
||
535 | } |
||
536 | } |
||
537 | v.add(new Integer(offset+read)); |
||
538 | v.add(new Integer(code)); |
||
539 | v.add(new Integer(counter)); |
||
540 | for (int i=0;i<hlist.size();i++) { |
||
541 | v.add(hlist.get(i)); |
||
542 | } |
||
543 | return v;
|
||
544 | } |
||
545 | /**
|
||
546 | * Read a int value (the size of a modular short) from a ByteBuffer
|
||
547 | *
|
||
548 | * @param bb Data given as a ByteBuffer
|
||
549 | * @return int Size of the modular short
|
||
550 | */
|
||
551 | public static int getModularShort(ByteBuffer bb) { |
||
552 | 7178 | azabala | ArrayList shorts = new ArrayList(); |
553 | 2896 | jmorell | bb.order(ByteOrder.BIG_ENDIAN);
|
554 | short shortt = bb.getShort();
|
||
555 | int size = 0; |
||
556 | while ((shortt & 0x80)>0) { |
||
557 | shorts.add(new Short(shortt)); |
||
558 | shortt = bb.getShort(); |
||
559 | } |
||
560 | shorts.add(new Short(shortt)); |
||
561 | for (int i=0; i<shorts.size(); i++) { |
||
562 | shortt = ((Short)shorts.get(i)).shortValue();
|
||
563 | shorts.set(i, new Integer(((shortt & 0xff00) >> 8) | ((shortt & 0xff) << 8))); |
||
564 | } |
||
565 | int slen = shorts.size();
|
||
566 | if (slen==1) { |
||
567 | size = (((Integer)shorts.get(0)).intValue()) & 0x7fff;//(new Integer(((Integer)shorts.get(0)).shortValue() & 0x7fff)).byteValue(); |
||
568 | } else if (slen==2) { |
||
569 | int tmp = ((Integer)shorts.get(0)).intValue(); |
||
570 | shorts.set(0, shorts.get(1)); |
||
571 | shorts.set(1, new Integer(tmp)); |
||
572 | size = (((((Integer)shorts.get(0)).intValue()) & 0x7fff) << 15) | (((((Integer)shorts.get(1)).intValue()) & 0x7fff));//(new Integer(((Integer)shorts.get(0)).shortValue() & 0x7fff)).byteValue(); |
||
573 | } else {
|
||
574 | System.out.println("Unexpected array length: " + slen); |
||
575 | } |
||
576 | return size;
|
||
577 | } |
||
578 | /**
|
||
579 | * Returns a set of bits from a group of unsigned bytes
|
||
580 | *
|
||
581 | * @param data Array of unsigned bytes obtained from the DWG binary file
|
||
582 | * @param count Bit counter
|
||
583 | * @param offset The current bit offset where the value begins
|
||
584 | 10054 | azabala | * @throws RuntimeException If an unexpected bit value is found in the DWG file. Occurs
|
585 | 2896 | jmorell | * when we are looking for LwPolylines.
|
586 | * @return This method returns an array of bytes or an int value
|
||
587 | */
|
||
588 | 10054 | azabala | public static Object getBits(int[] data, int count, int offset) throws RuntimeException { |
589 | 2896 | jmorell | int idx = offset/8; |
590 | int bitidx = offset%8; |
||
591 | /**
|
||
592 | * mask1: bit mask to apply to the current byte
|
||
593 | * lshift: left shift amount of mask results
|
||
594 | * mask2: bit mask to apply to the next byte
|
||
595 | * rshift: right shift amount of the mask results
|
||
596 | */
|
||
597 | int[][] maskTable = new int[][]{ |
||
598 | {0xff, 0, 0x00, 0}, // bit offset == 0 |
||
599 | {0x7f, 1, 0x80, 7}, // bit offset == 1 |
||
600 | {0x3f, 2, 0xc0, 6}, // bit offset == 2 |
||
601 | {0x1f, 3, 0xe0, 5}, // bit offset == 3 |
||
602 | {0x0f, 4, 0xf0, 4}, // bit offset == 4 |
||
603 | {0x07, 5, 0xf8, 3}, // bit offset == 5 |
||
604 | {0x03, 6, 0xfc, 2}, // bit offset == 6 |
||
605 | {0x01, 7, 0xfe, 1}, // bit offset == 7 |
||
606 | }; |
||
607 | int mask1 = maskTable[bitidx][0]; |
||
608 | int lsh = maskTable[bitidx][1]; |
||
609 | int mask2 = maskTable[bitidx][2]; |
||
610 | int rsh = maskTable[bitidx][3]; |
||
611 | int binc = 8 - bitidx; |
||
612 | int read = 0; |
||
613 | int rem = count;
|
||
614 | int bytee = 0x0; |
||
615 | 7178 | azabala | ArrayList bytes = new ArrayList(); |
616 | 2896 | jmorell | while (read < count) {
|
617 | int b1 = 0; |
||
618 | if (rem > binc) {
|
||
619 | b1 = (data[idx] & mask1); |
||
620 | read = read + binc; |
||
621 | rem = rem - binc; |
||
622 | } else {
|
||
623 | b1 = ((data[idx] & mask1) >> (8 - bitidx - rem));
|
||
624 | bytee = b1; |
||
625 | read = read + rem; |
||
626 | rem = 0;
|
||
627 | } |
||
628 | if (read < count) {
|
||
629 | idx = idx + 1;
|
||
630 | if (rem > bitidx) {
|
||
631 | int b2 = (data[idx] & mask2);
|
||
632 | bytee = (b1 << lsh) | (b2 >> rsh); |
||
633 | read = read + bitidx; |
||
634 | rem = rem - bitidx; |
||
635 | } else {
|
||
636 | int mask = maskTable[rem][2]; |
||
637 | int b2 = data[idx] & mask;
|
||
638 | bytee = (b1 << rem) | (b2 >> (8 - rem));
|
||
639 | read = read + rem; |
||
640 | rem = 0;
|
||
641 | } |
||
642 | } |
||
643 | if (count > 8) { |
||
644 | bytes.add(new Integer(bytee)); |
||
645 | } |
||
646 | } |
||
647 | if (bytes.size()>0) { |
||
648 | byte[] newBytes = new byte[bytes.size()]; |
||
649 | for (int i=0; i<newBytes.length; i++) { |
||
650 | newBytes[i] = ((Integer)bytes.get(i)).byteValue();
|
||
651 | } |
||
652 | return newBytes;
|
||
653 | } |
||
654 | return new Integer(bytee); |
||
655 | } |
||
656 | /**
|
||
657 | * Test a bit obtained from a set of unsigned bytes
|
||
658 | *
|
||
659 | * @param data Array of unsigned bytes obtained from the DWG binary file
|
||
660 | * @param offset The current bit offset where the value begins
|
||
661 | 7178 | azabala | * @return ArrayList This ArrayList has two parts. First is an int value that represents
|
662 | 2896 | jmorell | * the new offset, and second is a bit flag
|
663 | */
|
||
664 | 7178 | azabala | public static ArrayList testBit(int[] data, int offset) { |
665 | 2896 | jmorell | int idx = offset/8; |
666 | int bitidx = offset%8; |
||
667 | int mask = 0x1 << (7-bitidx); |
||
668 | boolean val = false; |
||
669 | if ((data[idx] & mask) > 0) val = true; |
||
670 | 7178 | azabala | ArrayList v = new ArrayList(); |
671 | 2896 | jmorell | v.add(new Integer(offset+1)); |
672 | v.add(new Boolean(val)); |
||
673 | return v;
|
||
674 | } |
||
675 | /**
|
||
676 | * Convert bytes to machine value bytes
|
||
677 | *
|
||
678 | * @param data Input of array of bytes
|
||
679 | * @return int[] Output of array of machine bytes
|
||
680 | */
|
||
681 | public static int[] bytesToMachineBytes(byte[] data) { |
||
682 | String[] dataString = new String[data.length]; |
||
683 | int[] dataOut = new int[data.length]; |
||
684 | for (int i=0; i<data.length; i++) { |
||
685 | dataString[i] = HexUtil.bytesToHex(new byte[]{data[i]}); |
||
686 | Integer dataInt = Integer.decode("0x" + dataString[i]); |
||
687 | dataOut[i] = dataInt.intValue(); |
||
688 | } |
||
689 | return dataOut;
|
||
690 | } |
||
691 | 9873 | azabala | |
692 | |||
693 | |||
694 | |||
695 | |||
696 | |||
697 | /**
|
||
698 | * It receives the list procedent from getHandle method, and return the
|
||
699 | * handle as int
|
||
700 | *
|
||
701 | * */
|
||
702 | 10011 | fdiaz | public static int handleToInt(List fromGetHandle){ |
703 | 9873 | azabala | |
704 | int[] handle = new int[fromGetHandle.size()-1]; |
||
705 | for (int j=1; j< fromGetHandle.size(); j++) { |
||
706 | handle[j-1] = ((Integer)fromGetHandle.get(j)).intValue(); |
||
707 | } |
||
708 | ArrayList handleVect = new ArrayList(); |
||
709 | for (int i=0;i<handle.length;i++) { |
||
710 | handleVect.add(new Integer(handle[i])); |
||
711 | } |
||
712 | return DwgUtil.handleBinToHandleInt(handleVect);
|
||
713 | |||
714 | |||
715 | } |
||
716 | 2896 | jmorell | /**
|
717 | * Obtain the int value of a handle given in binary format
|
||
718 | *
|
||
719 | * @param layerHandle Handle in binary format
|
||
720 | * @return int Int value of the handle
|
||
721 | */
|
||
722 | 7178 | azabala | public static int handleBinToHandleInt(ArrayList layerHandle) { |
723 | 2896 | jmorell | byte[] layerBytes = new byte[]{0,0,0,0}; |
724 | if (layerHandle.size()>2) layerBytes[3] = (byte)((Integer)layerHandle.get(2)).intValue(); |
||
725 | if (layerHandle.size()>3) { |
||
726 | layerBytes[3] = (byte)((Integer)layerHandle.get(3)).intValue(); |
||
727 | layerBytes[2] = (byte)((Integer)layerHandle.get(2)).intValue(); |
||
728 | } |
||
729 | if (layerHandle.size()>4) { |
||
730 | layerBytes[3] = (byte)((Integer)layerHandle.get(4)).intValue(); |
||
731 | layerBytes[2] = (byte)((Integer)layerHandle.get(3)).intValue(); |
||
732 | layerBytes[1] = (byte)((Integer)layerHandle.get(2)).intValue(); |
||
733 | } |
||
734 | if (layerHandle.size()>5) { |
||
735 | layerBytes[3] = (byte)((Integer)layerHandle.get(5)).intValue(); |
||
736 | layerBytes[2] = (byte)((Integer)layerHandle.get(4)).intValue(); |
||
737 | layerBytes[1] = (byte)((Integer)layerHandle.get(3)).intValue(); |
||
738 | layerBytes[0] = (byte)((Integer)layerHandle.get(2)).intValue(); |
||
739 | } |
||
740 | int layer = ByteUtils.bytesToInt(layerBytes, new int[]{0}); |
||
741 | return layer;
|
||
742 | } |
||
743 | 9873 | azabala | /*
|
744 | * TODO Ver si esto es necesario
|
||
745 | * */
|
||
746 | public static int[] toIntArray(byte[] bytes){ |
||
747 | String[] dataMachValString = new String[bytes.length]; |
||
748 | int[] data = new int[bytes.length]; |
||
749 | for (int i=0; i < bytes.length; i++) { |
||
750 | dataMachValString[i] = HexUtil.bytesToHex(new byte[]{bytes[i]}); |
||
751 | Integer dataMachValShort = Integer.decode("0x" + dataMachValString[i]); |
||
752 | data[i] = dataMachValShort.byteValue(); |
||
753 | data[i] = ByteUtils.getUnsigned((byte)data[i]);
|
||
754 | }//for
|
||
755 | return data;
|
||
756 | |||
757 | } |
||
758 | 2896 | jmorell | } |