Example usage for org.apache.poi.util LittleEndian getByteArray

Introduction

In this page you can find the example usage for org.apache.poi.util LittleEndian getByteArray.

Prototype

public static byte[] getByteArray(byte[] data, int offset, int size) 

Source Link

Document

Copy a portion of a byte array

Usage

From source file:org.ddt.listener.records.DConRefRecord.java

License:Apache License

/**
 * Read constructor.//from  w ww .j av  a2 s .  c  o m
 *
 * @param data byte array containing a DConRef Record, including the header.
 */
public DConRefRecord(byte[] data) {
    int offset = 0;
    if (!(LittleEndian.getShort(data, offset) == DConRefRecord.sid))
        throw new RecordFormatException("incompatible sid.");
    offset += LittleEndian.SHORT_SIZE;

    //length = LittleEndian.getShort(data, offset);
    offset += LittleEndian.SHORT_SIZE;

    firstRow = LittleEndian.getUShort(data, offset);
    offset += LittleEndian.SHORT_SIZE;
    lastRow = LittleEndian.getUShort(data, offset);
    offset += LittleEndian.SHORT_SIZE;
    firstCol = LittleEndian.getUByte(data, offset);
    offset += LittleEndian.BYTE_SIZE;
    lastCol = LittleEndian.getUByte(data, offset);
    offset += LittleEndian.BYTE_SIZE;
    charCount = LittleEndian.getUShort(data, offset);
    offset += LittleEndian.SHORT_SIZE;
    if (charCount < 2)
        throw new org.apache.poi.hssf.record.RecordFormatException("Character count must be >= 2");

    charType = LittleEndian.getUByte(data, offset);
    offset += LittleEndian.BYTE_SIZE; //7 bits reserved + 1 bit type

    /*
     * bytelength is the length of the string in bytes, which depends on whether the string is
     * made of single- or double-byte chars. This is given by charType, which equals 0 if
     * single-byte, 1 if double-byte.
     */
    int byteLength = charCount * ((charType & 1) + 1);

    path = LittleEndian.getByteArray(data, offset, byteLength);
    offset += byteLength;

    /*
     * If it's a self reference, the last one or two bytes (depending on char type) are the
     * unused field. Not sure If i need to bother with this...
     */
    if (path[0] == 0x02)
        _unused = LittleEndian.getByteArray(data, offset, (charType + 1));

}

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