com.partnersoft.formats.dwg

Class DwgBitReader

java.lang.Object

com.partnersoft.formats.dwg.DwgBitReader

public class DwgBitReader
extends java.lang.Object

A reader that supports all the various weird bit-based datatypes that DWG files consist of.

Author:

Paul Reavis Copyright 2003 Partner Software, Inc.

Constructor Summary

Constructors

Constructor and Description
DwgBitReader(java.io.File dwgFile)

Method Summary

Methods

Modifier and Type	Method and Description
void	align() Skips random bits so that next read is byte-aligned.
int	getBitsLeft()
int	getPosition()
boolean	isBlabby()
java.lang.String	readASCII(int length)
double	readBEDouble()
int	readBEShort()
byte	readBit()
double	readBitDouble() Reads a bit-compressed 8-byte IEEE double.
int	readBitLong() Reads a bit-compressed 4-byte "long".
int	readBits(int count) Reads some number of bits by shifting and masking.
short	readBitShort() Reads a bit-compressed 2-byte short.
int	readByte()
long	readHandle()
long	readHandle(long referenceHandle)
int	readModularChar()
int	readModularShort()
double[]	readRaw2D()
double[]	readRaw3D()
byte	readRawChar()
double	readRawDouble()
int	readRawLong()
short	readRawShort()
void	readSentinel(byte[] verifyBytes)
java.lang.Object	readSpecial()
java.lang.String	readText()
int	readTwoBits()
java.lang.Object	readUnknown()
void	setBlabby(boolean tizit)
void	setPosition(int newPosition)
void	skipBits(int count)
void	skipBytes(int count)

Methods inherited from class java.lang.Object

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

Constructor Detail

DwgBitReader

public DwgBitReader(java.io.File dwgFile)
             throws java.io.IOException

Throws:

java.io.IOException

Method Detail

readBits

public int readBits(int count)
             throws java.io.IOException

Reads some number of bits by shifting and masking. Note that these will be in big-endian format if you get multiple bytes worth, and will be unsigned for anything less than four bytes.

Throws:

java.io.IOException

align

public void align()
           throws java.io.IOException

Skips random bits so that next read is byte-aligned.

Throws:

java.io.IOException

skipBytes

public void skipBytes(int count)
               throws java.io.IOException

Throws:

java.io.IOException

skipBits

public void skipBits(int count)
              throws java.io.IOException

Throws:

java.io.IOException

readBit

public byte readBit()
             throws java.io.IOException

Throws:

java.io.IOException

readTwoBits

public int readTwoBits()
                throws java.io.IOException

Throws:

java.io.IOException

readByte

public int readByte()
             throws java.io.IOException

Throws:

java.io.IOException

readBitShort

public short readBitShort()
                   throws java.io.IOException

Reads a bit-compressed 2-byte short.

Throws:

java.io.IOException

readBitLong

public int readBitLong()
                throws java.io.IOException

Reads a bit-compressed 4-byte "long".

Throws:

java.io.IOException

readBitDouble

public double readBitDouble()
                     throws java.io.IOException

Reads a bit-compressed 8-byte IEEE double.

Throws:

java.io.IOException

readRawChar

public byte readRawChar()
                 throws java.io.IOException

Throws:

java.io.IOException

readRawShort

public short readRawShort()
                   throws java.io.IOException

Throws:

java.io.IOException

readBEShort

public int readBEShort()
                throws java.io.IOException

Throws:

java.io.IOException

readRawDouble

public double readRawDouble()
                     throws java.io.IOException

Throws:

java.io.IOException

readBEDouble

public double readBEDouble()
                    throws java.io.IOException

Throws:

java.io.IOException

readRawLong

public int readRawLong()
                throws java.io.IOException

Throws:

java.io.IOException

readRaw2D

public double[] readRaw2D()
                   throws java.io.IOException

Throws:

java.io.IOException

readRaw3D

public double[] readRaw3D()
                   throws java.io.IOException

Throws:

java.io.IOException

readModularChar

public int readModularChar()
                    throws java.io.IOException

Throws:

java.io.IOException

readModularShort

public int readModularShort()
                     throws java.io.IOException

Throws:

java.io.IOException

readHandle

public long readHandle(long referenceHandle)
                throws java.io.IOException

Throws:

java.io.IOException

readHandle

public long readHandle()
                throws java.io.IOException

Throws:

java.io.IOException

readText

public java.lang.String readText()
                          throws java.io.IOException

Throws:

java.io.IOException

readSpecial

public java.lang.Object readSpecial()
                             throws java.io.IOException

Throws:

java.io.IOException

readUnknown

public java.lang.Object readUnknown()
                             throws java.io.IOException

Throws:

java.io.IOException

readASCII

public java.lang.String readASCII(int length)
                           throws java.io.IOException

Throws:

java.io.IOException

readSentinel

public void readSentinel(byte[] verifyBytes)
                  throws java.io.IOException

Throws:

java.io.IOException

getPosition

public int getPosition()
                throws java.io.IOException

Throws:

java.io.IOException

getBitsLeft

public int getBitsLeft()

setPosition

public void setPosition(int newPosition)
                 throws java.io.IOException

Throws:

java.io.IOException

isBlabby

public boolean isBlabby()

setBlabby

public void setBlabby(boolean tizit)