Package com.reportmill.base

Class RMDataReader

java.lang.Object

com.reportmill.base.RMDataReader

public class RMDataReader
extends java.lang.Object

This class helps read encoded basic data types, from a raw byte stream. Types include signed or unsigned, big-endian or little endian, chars, shorts and ints.

Constructor Summary

Constructors

Constructor	Description
RMDataReader(byte[] bytes)	Creates a data reader from the given bytes.
RMDataReader(byte[] bytes, int offset, int length)	Creates a data reader from the given bytes with the given offset and length.

Method Summary

Modifier and Type	Method	Description
short[]	bigShortArrayAt(int index, int len)	Returns the array of big endian shorts at the given byte index with the given length.
short	bigShortAtIndex(int index)	Returns the short at the given index (assumed to be in big endian format).
long	bigUIntAtIndex(int index)	Returns the big endian unsigned int at the given byte index.
int[]	bigUShortArrayAt(int index, int len)	Returns the array of big endian unsigned shorts at the given byte index with the given length.
int	bigUShortAtIndex(int index)	Returns the big endian unsigned short at the given byte index.
byte	byteAt(int index)	Returns the specific byte at the given index.
byte[]	bytes()	Returns the bytes.
char[]	charArrayAt(int index, int len)	Returns the char array at the given byte index with the given length.
void	getBytes(byte[] bytes, int start, int end)	Copies bytes from this to given byte array in given range.
void	getBytes(byte[] bytes, int start, int end, int destStart)	Copies bytes from this to given byte array in given range.
static RMDataReader	getReader(java.lang.Object aSource)	Returns a data reader from the given source File, String path, InputStream, byte[], etc.
static RMDataReader	getReader(java.lang.Object aSource, int offset, int length)	Returns a data reader from the given source File, String path, InputStream, byte[], etc.
int	length()	Returns the length of the bytes for the given reader.
short	littleShortAtIndex(int index)	Returns the little endian short at the given byte index.
long	littleUIntAtIndex(int index)	Returns the little endian unsigned int at the given byte index.
int	littleUShortAtIndex(int index)	Returns the little endian unsigned short at the given byte index.
int	offset()	Returns the offset of the bytes for the reader.
byte[]	toByteArray()	Returns a byte array for the reader.
byte[]	toByteArray(int start, int end)	Returns a byte array for the reader.
java.lang.String	toString()	Returns the reader's bytes as a string.
java.lang.String	toString(int start, int end, java.lang.String encoding)	Returns the reader's bytes as a string in the given encoding.
short	ubyteAt(int index)	Returns the specific unsigned byte at the given index.

Methods inherited from class java.lang.Object

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

Constructor Detail

RMDataReader

public RMDataReader(byte[] bytes)

Creates a data reader from the given bytes.

RMDataReader

public RMDataReader(byte[] bytes,
                    int offset,
                    int length)

Creates a data reader from the given bytes with the given offset and length.

Method Detail

getReader

public static RMDataReader getReader(java.lang.Object aSource)

Returns a data reader from the given source File, String path, InputStream, byte[], etc.

getReader

public static RMDataReader getReader(java.lang.Object aSource,
                                     int offset,
                                     int length)

Returns a data reader from the given source File, String path, InputStream, byte[], etc.

bytes

public byte[] bytes()

Returns the bytes.

byteAt

public byte byteAt(int index)

Returns the specific byte at the given index.

ubyteAt

public short ubyteAt(int index)

Returns the specific unsigned byte at the given index.

offset

public int offset()

Returns the offset of the bytes for the reader.

length

public int length()

Returns the length of the bytes for the given reader.

toByteArray

public byte[] toByteArray()

Returns a byte array for the reader.

toByteArray

public byte[] toByteArray(int start,
                          int end)

Returns a byte array for the reader.

getBytes

public void getBytes(byte[] bytes,
                     int start,
                     int end)

Copies bytes from this to given byte array in given range.

getBytes

public void getBytes(byte[] bytes,
                     int start,
                     int end,
                     int destStart)

Copies bytes from this to given byte array in given range.

toString

public java.lang.String toString()

Returns the reader's bytes as a string.

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(int start,
                                 int end,
                                 java.lang.String encoding)

Returns the reader's bytes as a string in the given encoding.

bigShortAtIndex

public short bigShortAtIndex(int index)

Returns the short at the given index (assumed to be in big endian format).

bigUShortAtIndex

public int bigUShortAtIndex(int index)

Returns the big endian unsigned short at the given byte index.

littleShortAtIndex

public short littleShortAtIndex(int index)

Returns the little endian short at the given byte index.

littleUShortAtIndex

public int littleUShortAtIndex(int index)

Returns the little endian unsigned short at the given byte index.

bigUIntAtIndex

public long bigUIntAtIndex(int index)

Returns the big endian unsigned int at the given byte index.

littleUIntAtIndex

public long littleUIntAtIndex(int index)

Returns the little endian unsigned int at the given byte index.

charArrayAt

public char[] charArrayAt(int index,
                          int len)

Returns the char array at the given byte index with the given length.

bigShortArrayAt

public short[] bigShortArrayAt(int index,
                               int len)

Returns the array of big endian shorts at the given byte index with the given length.

bigUShortArrayAt

public int[] bigUShortArrayAt(int index,
                              int len)

Returns the array of big endian unsigned shorts at the given byte index with the given length.