fr.cnes.sirius.patrius.bodies.bsp.spice

Class DafReaderTools

java.lang.Object

fr.cnes.sirius.patrius.bodies.bsp.spice.DafReaderTools

public final class DafReaderTools
extends Object

This class includes auxiliary methods for the DAF files reading.

Since:

4.11

Author:

T0281925

Method Summary

Modifier and Type	Method and Description
static void	address2RecordWord(int address, int[] record, int[] word) Transform an address into a record number and a word inside the record.
static long	nRecord2nByte(int nRecord) Transform a record number into the byte address of its beginning.
static String	readString(RandomAccessFile file, int length) Read a String of a given length from the current pointer in the RandomAccessFile on input.

Methods inherited from class java.lang.Object

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

Method Detail

readString

public static String readString(RandomAccessFile file,
                                int length)
                         throws IOException

Read a String of a given length from the current pointer in the RandomAccessFile on input.

Parameters:

file - RandomAccessFile already opened from where the string is read

length - Length of the desired String

Returns:

the read String

Throws:

IOException - if there is a problem while reading the file

nRecord2nByte

public static long nRecord2nByte(int nRecord)

Transform a record number into the byte address of its beginning.

Parameters:

nRecord - File record we want to access

Returns:

file byte where the record starts

Throws:

MathIllegalArgumentException - if the nRecord isn't valid

address2RecordWord

public static void address2RecordWord(int address,
                                      int[] record,
                                      int[] word)

Transform an address into a record number and a word inside the record.
There are 128 words in each record, being each 8 bytes (a double precision).

Parameters:

address - byte address we want to transform

record - (output) file record where the address points

word - (output) word inside the record where the address points

Throws:

MathIllegalArgumentException - if the address isn't valid