Revision 10421
| trunk/libraries/libDwg/src/com/iver/cit/jdwglib/dwg/readers/DwgFileV12Reader.java | ||
|---|---|---|
| 46 | 46 |
import java.io.IOException; |
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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 com.iver.cit.jdwglib.dwg.CorruptedDwgEntityException; |
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import com.iver.cit.jdwglib.dwg.DwgFile; |
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import com.iver.cit.jdwglib.dwg.DwgHandleReference; |
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import com.iver.cit.jdwglib.dwg.DwgObject; |
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/** |
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* Reads version 12 dwg files |
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* |
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* @author azabala |
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* |
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* TODO REVISAR TODOS LOS bb.getShort() y bb.getInt() pues puede que haya |
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* algun tipo cambiado |
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* (l--> es un int, h--> es un short) |
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*/ |
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public class DwgFileV12Reader implements IDwgFileReader{
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private DwgFile dwgFile; |
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private ByteBuffer bb; |
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ArrayList readers = new ArrayList(); |
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/* |
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* En Python: |
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* if _version != 'AC1009': |
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if _version == 'AC1010': |
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r13 = True |
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else: |
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print "unknown version" |
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* |
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* */ |
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private boolean r13 = false; |
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public DwgFileV12Reader(boolean isR13){
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r13 = isR13; |
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readers.add(null); |
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readers.add(new LineReader()); |
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readers.add(new PointReader()); |
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readers.add(new CircleReader()); |
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readers.add(new ShapeReader()); |
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readers.add(null); |
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readers.add(null); |
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readers.add(new TextReader()); |
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readers.add(new ArcReader()); |
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readers.add(new TraceReader()); |
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readers.add(null); |
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readers.add(null); |
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readers.add(new SolidReader()); |
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readers.add(new BlkReader()); |
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readers.add(new EndBlkReader()); |
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readers.add(new InsertReader()); |
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readers.add(new AttDefReader()); |
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readers.add(new AttribReader()); |
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readers.add(new SbEndReader()); |
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readers.add(null); |
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readers.add(new PlineReader()); |
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readers.add(new VertexReader()); |
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readers.add(null); |
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readers.add(new Face3DReader()); |
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readers.add(new DimReader()); |
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readers.add(new VPortReader()); |
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} |
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/* (non-Javadoc) |
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* @see com.iver.cit.jdwglib.dwg.readers.IDwgFileReader#read(com.iver.cit.jdwglib.dwg.DwgFile, java.nio.ByteBuffer) |
| ... | ... | |
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} |
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/** |
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* @param styleTable |
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*/ |
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private void readStyleTable(Dwg12Table styleTable) {
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short size = styleTable.s1; |
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int numRecs = styleTable.i1; |
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int start = styleTable.i2; |
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int end = -1; |
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bb.position(start); |
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for(int i = 0; i < numRecs; i++){
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end = bb.position() + size; |
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byte flag = bb.get(); |
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byte[] nameBytes = new byte[32]; |
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bb.get(nameBytes); |
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String name = new String(nameBytes); |
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bb.order(ByteOrder.LITTLE_ENDIAN); |
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short w1 = bb.getShort(); |
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double d1 = bb.getDouble(); |
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double d2 = bb.getDouble(); |
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double d3 = bb.getDouble(); |
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byte b1 = bb.get(); |
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double d4 = bb.getDouble(); |
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byte[] s1 = new byte[128]; |
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bb.get(s1); |
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short crc = bb.getShort(); |
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int offset = end - bb.position(); |
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if(offset > 0) |
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bb.position(bb.position() + offset); |
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} |
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byte[] crc32 = new byte[32]; |
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bb.get(crc32); |
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} |
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/** |
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* @param layerTable |
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*/ |
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private void readLayerTable(Dwg12Table layerTable) {
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short size = layerTable.s1; |
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int numR = layerTable.i1; |
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int start = layerTable.i2; |
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int end = -1; |
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bb.position(start); |
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for(int i = 0; i < numR; i++){
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end = bb.position() + size; |
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byte flag = bb.get(); |
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byte[] nameByte = new byte[32]; |
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bb.get(nameByte); |
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String name = new String(nameByte); |
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bb.order(ByteOrder.LITTLE_ENDIAN); |
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short used = bb.getShort(); |
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short color = bb.getShort(); |
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short style = bb.getShort(); |
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short crc = bb.getShort(); |
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int offset = end - bb.position(); |
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if(offset > 0) |
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bb.position(bb.position() + offset); |
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} |
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byte[] crc32 = new byte[32]; |
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bb.get(crc32); |
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} |
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interface EntityReader{
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void read(ByteBuffer bb, char flags, short opts); |
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} |
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class LineReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class PointReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class CircleReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class ShapeReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class TextReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class ArcReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class TraceReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class SolidReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class BlkReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class EndBlkReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class InsertReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class AttDefReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class AttribReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class SbEndReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class PlineReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class VertexReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class Face3DReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class DimReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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class VPortReader implements EntityReader{
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public void read(ByteBuffer bb, char flags, short opts) {
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} |
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} |
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/** |
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* @param start |
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* @param end |
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*/ |
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private void readEntities(int start, int end) {
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bb.position(start); |
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int ant = bb.position(); |
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int emax = readers.size(); |
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while(ant < (end - 32)){
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bb.order(ByteOrder.LITTLE_ENDIAN); |
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char kind = bb.getChar(); |
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char flag = bb.getChar(); |
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short lenght = bb.getShort(); |
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int crcpos = ant + (lenght - 2); |
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short layer = bb.getShort(); |
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short opts = bb.getShort(); |
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byte color = 0; |
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if ((flag & 0x1) > 0){
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color = bb.get(); |
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} |
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byte extra = 0; |
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if ((flag & 0x40) > 0) |
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extra = bb.get(); |
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Object xdata = null; |
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if((extra & 0x2) > 0) |
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xdata = readXdata(); |
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short type = 0; |
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if((flag & 0x2) > 0) |
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type = bb.getShort(); |
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double z = 0d; |
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if( (flag & 0x4) > 0 && (kind > 2) && (kind != 22)){
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z = bb.getDouble(); |
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} |
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double th = 0d; |
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if((flag & 0x8) > 0){
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th = bb.getDouble(); |
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} |
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Object handle = null; |
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if((flag & 0x20) > 0) |
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handle = getHandle(); |
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short paper = 0; |
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if((extra & 0x4) > 0){
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paper = bb.getShort(); |
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} |
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if(kind < emax){
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EntityReader reader = (EntityReader) readers.get(kind); |
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if(reader != null){
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reader.read(bb, flag, opts); |
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ant = bb.position(); |
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if(ant < crcpos){
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bb.position(bb.position() + (crcpos - ant)); |
|
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}else{
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System.out.println("nos hemos pasado");
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} |
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short crc = bb.getShort(); |
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} |
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}//if |
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ant = bb.position(); |
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byte[] crc32 = new byte[32]; |
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bb.get(crc32); |
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|
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}//while |
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} |
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/** |
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* @return |
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*/ |
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private byte[] getHandle() {
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byte[] bytes = null; |
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bb.order(ByteOrder.nativeOrder()); |
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byte len = bb.get(); |
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bytes = new byte[len]; |
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bb.get(bytes); |
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return bytes; |
|
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//Ver si los handles de DWG 12 concurdan con nuestra clase |
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//DwgHandleReference |
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// return (5, _len) + tuple(_bytes) |
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} |
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/** |
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* @return |
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*/ |
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private String readXdata() {
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String extData = ""; |
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short xlen = bb.getShort(); |
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while (xlen > 0){
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byte xval = bb.get(); |
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xlen--; |
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if(xval == 0){
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if(xlen < 1) |
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break; |
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byte val = bb.get(); |
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xlen--; |
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if(r13){
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if(xlen < 1) |
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break; |
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byte codePage = bb.get(); |
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xlen--; |
|
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}//if r13 |
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if(xlen < val) |
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break; |
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byte[] strByte = new byte[val]; |
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bb.get(strByte); |
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xlen -= val; |
|
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extData += new String(strByte); |
|
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}//if xval == 0 |
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else if(xval == 1 || xval == 3 || xval == 70){
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if(xlen < 2) |
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break; |
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short val = bb.getShort(); |
|
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extData += val; |
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xlen += 2; |
|
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}else if(xval == 2){
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|
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if(xlen < 1) |
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break; |
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byte val = bb.get(); |
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if(val == 0) |
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extData += "{";
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|
| 554 |
else if(val == 1) |
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extData += "}"; |
|
| 556 |
else |
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| 557 |
System.out.println("Char no esperado:"+val);
|
|
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}else if(xval == 5){
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if(xlen < 8) |
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break; |
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long val = bb.getLong(); |
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//probably it is an entity handle |
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xlen -= 8; |
|
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}else if (xval == 40 || xval == 41 || xval == 42){
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if (xlen < 8) |
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break; |
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double val = bb.getDouble(); |
|
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xlen -= 8; |
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extData += val; |
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|
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}else if (xval == 10 || xval == 11 || xval == 12 || xval == 13){
|
|
| 572 |
//13 not in R12 spec, is in R13/R14 |
|
| 573 |
if(xlen < 24) |
|
| 574 |
break; |
|
| 575 |
Object point = getPoint(true); |
|
| 576 |
extData += point.toString(); |
|
| 577 |
xlen -= 24; |
|
| 578 |
}else if(xval == 71){
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| 579 |
if (xlen < 4) |
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| 580 |
break; |
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| 581 |
int val = bb.getInt(); |
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| 582 |
extData += val; |
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| 583 |
xlen -= 4; |
|
| 584 |
}else |
|
| 585 |
xlen = 0; |
|
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return extData; |
|
| 587 |
} |
|
| 588 |
/* |
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| 589 |
|
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| 590 |
|
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| 591 |
|
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| 592 |
elif _xval == 71: |
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| 593 |
if _xlen < 4: break |
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| 594 |
_val = struct.unpack('<l', handle.read(4))[0]
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| 595 |
_data.append(_val) |
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| 596 |
_xlen = _xlen - 4 |
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else: |
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| 598 |
_xlen = 0 |
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| 599 |
return _data |
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* */ |
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| 601 |
return null; |
|
| 602 |
} |
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| 603 |
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| 604 |
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| 605 |
|
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| 606 |
/** |
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| 607 |
* @param b |
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| 608 |
* @return |
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| 609 |
*/ |
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| 610 |
private double[] getPoint(boolean b) {
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| 611 |
bb.order(ByteOrder.LITTLE_ENDIAN); |
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| 612 |
double x = bb.getDouble(); |
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| 613 |
double y = bb.getDouble(); |
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| 614 |
double z = 0d; |
|
| 615 |
if(b){
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| 616 |
z = bb.getDouble(); |
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| 617 |
} |
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| 618 |
return new double[]{x, y, z};
|
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| 619 |
} |
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| 620 |
|
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| 621 |
|
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| 622 |
|
|
| 623 |
//TODO Que se hacen con los registros que se leen??? |
|
| 624 |
private void readBlockTable(Dwg12Table blockTable) {
|
|
| 625 |
short size = blockTable.s1; |
|
| 626 |
int numRecords = blockTable.i1; |
|
| 627 |
int start = blockTable.i2; |
|
| 628 |
bb.position(start); |
|
| 629 |
|
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| 630 |
int end = -1; |
|
| 631 |
|
|
| 632 |
for(int i = 0; i < numRecords; i++){
|
|
| 633 |
end = bb.position() + size; |
|
| 634 |
char flag = bb.getChar(); |
|
| 635 |
//TODO No estoy muy seguro de que esto sea |
|
| 636 |
//igual que handle.read(32) en Python |
|
| 637 |
byte[] nameByte = new byte[32]; |
|
| 638 |
bb.get(nameByte); |
|
| 639 |
String name = new String(nameByte); |
|
| 640 |
|
|
| 641 |
bb.order(ByteOrder.LITTLE_ENDIAN); |
|
| 642 |
|
|
| 643 |
short used = bb.getShort(); |
|
| 644 |
char b1 = bb.getChar(); |
|
| 645 |
short w1 = bb.getShort(); |
|
| 646 |
char b2 = bb.getChar(); |
|
| 647 |
short w2 = bb.getShort(); |
|
| 648 |
short crc = bb.getShort(); |
|
| 649 |
|
|
| 650 |
int offset = end - bb.position(); |
|
| 651 |
if(offset > 0) |
|
| 652 |
bb.position(bb.position() + end); |
|
| 653 |
} |
|
| 654 |
byte[] crc32 = new byte[32]; |
|
| 655 |
bb.get(crc32); |
|
| 656 |
} |
|
| 657 |
|
|
| 208 | 658 |
public void readHeader(){
|
| 209 | 659 |
|
| 210 | 660 |
|
Also available in: Unified diff