/**
* This helper method loads just the .dbf file header portion into the mapTable argument using the
* dis stream.
*
* @param dis The stream reading from the .dbf file.
* @param mapTable The dbf table being loadd.
* @throws IOException Thrown when the stream fails.
*/
private void loadHeader(DataInputStream dis, DBFTable mapTable) throws IOException {
// DBF file type (0)
byte dbfFileType = dis.readByte();
mapTable.setFileType(dbfFileType);
// LAST UPDATE (1-3)
int year = 1900 + dis.readByte();
int month = dis.readByte();
int day = dis.readByte();
mapTable.setLastModifiedDate(year, month, day);
// NUMBER OF RECORDS IN FILE (4-7)
int numberOfRecordsInFile = readLittleEndianInt(dis);
mapTable.setNumberOfRecords(numberOfRecordsInFile);
// POSITION OF FIRST DATA RECORDED (8-9)
short positionOfFirstDataRecorded = readLittleEndianShort(dis);
mapTable.setPositionOfFirstDataRecorded(positionOfFirstDataRecorded);
// LENGTH OF ONE DATA RECORD, INCLUDING DELETE FLAG (10-11)
short dataRecordLength = readLittleEndianShort(dis);
mapTable.setDataRecordLength(dataRecordLength);
// ZEROES (12-13)
short zeroes = readLittleEndianShort(dis);
mapTable.setZeroes(zeroes);
// DBASE IV Transaction Flag (14)
byte dbaseTransactionFlag = dis.readByte();
mapTable.setDbaseTransactionFlag(dbaseTransactionFlag);
// DBASE IV Encryption Flag (15)
byte dbaseEncryptionFlag = dis.readByte();
mapTable.setDbaseEncryptionFlag(dbaseEncryptionFlag);
// Multiuser Processing 12 Bytes (16-27)
int[] mup = new int[3];
mup[0] = readLittleEndianInt(dis);
mup[1] = readLittleEndianInt(dis);
mup[2] = readLittleEndianInt(dis);
mapTable.setMup(mup);
// TABLE FLAGS (28)
byte tableFlags = dis.readByte();
mapTable.setFlags(tableFlags);
// CODE PAGE MARK/LANGUAGE DRIVER ID (29)
byte pageMark = dis.readByte();
mapTable.setCodePageMark(pageMark);
// RESERVED, CONTAINS 0x00 (30-31)
short reserved = readLittleEndianShort(dis);
mapTable.setReserved(reserved);
}
