public void Read(string fileName)
{
using (var fileStream = File.OpenRead(fileName))
{
using (var reader = new BinaryReader(fileStream, Encoding.Default))
{
var header = new ParadoxFileHeader();
header.Read(reader);
ReadBlocks(header, reader);
}
}
}
private void ReadBlocks(ParadoxFileHeader header, BinaryReader reader)
{
reader.BaseStream.Seek(0L, SeekOrigin.Begin);
try
{
/*
* skip to the first block
*/
reader.ReadBytes(header.BlockSizeBytes);
/*
* walk blocks
*/
int blocksInUse = header.BlocksInUse;
for (int i = 0; i < blocksInUse; i++)
{
/*
* block
*/
var pdxTableBlock = new ParadoxTableBlock(i + 1, header.CalculateRecordsPerBlock(), header.Fields);
var streamPos = reader.BaseStream.Position;
/*
* read the block data
*/
pdxTableBlock.Read(reader);
/*
* store it. blocks are numbered from 1, not from 0.
*/
blocks.Add(pdxTableBlock.BlockNumber, pdxTableBlock);
/*
* reset to the start of the block
*/
reader.BaseStream.Seek(streamPos, SeekOrigin.Begin);
/*
* skip ahead to next block
*/
reader.ReadBytes(header.BlockSizeBytes);
}
}
catch (Exception ex)
{
throw new Exception("Exception in readBlocks", ex);
}
}
