org.gvsig.dwg.lib.readers

Class DwgFileV14Reader

java.lang.Object

org.gvsig.dwg.lib.readers.DwgFileV14Reader

All Implemented Interfaces:

IDwgFileReader

public class DwgFileV14Reader
extends java.lang.Object
implements IDwgFileReader

The DwgFileV14Reader reads the DWG version 14 format

Field Summary

Fields

Modifier and Type	Field and Description
protected java.nio.ByteBuffer	bb
protected DwgFile	dwgFile

Constructor Summary

Constructors

Constructor and Description
DwgFileV14Reader()

Method Summary

Modifier and Type	Method and Description
DwgObject	getDwgObjectByIndex(int index) Return a dwg object from its index in the dwg file
void	read(DwgFile dwgFile, java.nio.ByteBuffer bb) Reads the DWG version 15 format
protected void	readDwgClasses()
protected DwgObject	readDwgObject(int offset, int index) Reads a dwg drawing entity (dwg object) given its offset in the file
protected void	readDwgObjectOffsets()
protected void	readDwgObjects() Reads all the object referenced in the object map section of the DWG file (using their object file obsets)
protected void	readDwgSectionOffsets() It read the SECTIONS from the header of the DWG file TODO Mover esto a una clase abstracta Reader, pues es similar para DWG 15 (o hacer que esta herede de DWG 15)
protected void	readHeaders() It reads all HEADER section of a DWG 13-14 file.
int	readObjectHeader(int[] data, int offset, DwgObject dwgObject) Reads the header of a dwg object
int	readObjectTailer(int[] data, int offset, DwgObject dwgObject) Reads the tailer of a dwg object.
protected void	readSpecificObject(DwgObject obj, int[] data, int bitPos)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

dwgFile

protected DwgFile dwgFile

bb

protected java.nio.ByteBuffer bb

Constructor Detail

DwgFileV14Reader

public DwgFileV14Reader()

Method Detail

read

public void read(DwgFile dwgFile,
                 java.nio.ByteBuffer bb)
          throws java.io.IOException

Reads the DWG version 15 format

Specified by:

read in interface IDwgFileReader

Parameters:

dwgFile - Represents the DWG file that we want to read

bb - Memory mapped byte buffer of the whole DWG file

Throws:

java.io.IOException - When DWG file path is wrong

readHeaders

protected void readHeaders()

It reads all HEADER section of a DWG 13-14 file. This method must be called only for debug purposes because we dont the meaning (or the practical application) of the fields readed with it TODO Pasarlo a la clase abstracta comun que se haga de las versiones 15, 13-14 (la cabecera es la misma practicamente)

readDwgSectionOffsets

protected void readDwgSectionOffsets()

It read the SECTIONS from the header of the DWG file TODO Mover esto a una clase abstracta Reader, pues es similar para DWG 15 (o hacer que esta herede de DWG 15)

readDwgObjectOffsets

protected void readDwgObjectOffsets()
                             throws java.lang.Exception

Throws:

java.lang.Exception

readDwgClasses

protected void readDwgClasses()
                       throws java.lang.Exception

Throws:

java.lang.Exception

readDwgObjects

protected void readDwgObjects()

Reads all the object referenced in the object map section of the DWG file (using their object file obsets)

getDwgObjectByIndex

public DwgObject getDwgObjectByIndex(int index)

Return a dwg object from its index in the dwg file

Parameters:

index - of the requested dwg object in the dwg file

readDwgObject

protected DwgObject readDwgObject(int offset,
                                  int index)

Reads a dwg drawing entity (dwg object) given its offset in the file

Parameters:

offset - offset of the dwg object in the file

index - order of the entity in the objects map (1, 2, etc.)

readSpecificObject

protected void readSpecificObject(DwgObject obj,
                                  int[] data,
                                  int bitPos)
                           throws java.lang.Exception

Throws:

java.lang.Exception

readObjectHeader

public int readObjectHeader(int[] data,
                            int offset,
                            DwgObject dwgObject)

Description copied from interface: IDwgFileReader

Reads the header of a dwg object

Specified by:

readObjectHeader in interface IDwgFileReader

readObjectTailer

public int readObjectTailer(int[] data,
                            int offset,
                            DwgObject dwgObject)
                     throws java.lang.RuntimeException,
                            CorruptedDwgEntityException

Description copied from interface: IDwgFileReader

Reads the tailer of a dwg object.

Specified by:

readObjectTailer in interface IDwgFileReader

Throws:

java.lang.RuntimeException

CorruptedDwgEntityException