/// <summary>read</summary>
/// <exception cref="System.Exception"/>
public virtual void Read(File file, PDXReaderListener pdxReaderListener)
{
try
{
/*
* start
*/
pdxReaderListener.Start();
/*
* set up streams
*/
BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream
(file));
LittleEndianDataInputStream littleEndianDataInputStream = new LittleEndianDataInputStream
(bufferedInputStream);
try
{
/*
* mark and read the headers
*/
bufferedInputStream.Mark(MaxHeaderSize);
ReadHeaders(littleEndianDataInputStream);
/*
* call the api
*/
pdxReaderListener.Header(dbTableHeader);
/*
* read the block data
*/
bufferedInputStream.Reset();
ReadBlocks(bufferedInputStream, pdxReaderListener);
/*
* done
*/
pdxReaderListener.Finish();
}
finally
{
littleEndianDataInputStream.Close();
bufferedInputStream.Close();
}
}
catch (Exception e)
{
throw new Exception("Exception in read", e);
}
}
/// <summary>Read all blocks</summary>
/// <exception cref="Com.Khubla.Pdxreader.Api.PDXReaderException"/>
private void ReadBlocks(File file)
{
try
{
foreach (MBTableBlock mbTableBlock in blocks)
{
/*
* set up streams
*/
BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream
(file));
LittleEndianDataInputStream littleEndianDataInputStream = new LittleEndianDataInputStream
(bufferedInputStream);
try
{
/*
* ffd
*/
long skipped = littleEndianDataInputStream.Skip(mbTableBlock.GetFileOffset());
if (0 != skipped)
{
/*
* read
*/
mbTableBlock.Read(littleEndianDataInputStream);
}
}
finally
{
littleEndianDataInputStream.Close();
bufferedInputStream.Close();
}
}
}
catch (Exception e)
{
throw new PDXReaderException("Exception in read", e);
}
}
/// <summary>read</summary>
/// <exception cref="Com.Khubla.Pdxreader.Api.PDXReaderException"/>
public virtual void Read(File file)
{
try
{
/*
* set up streams
*/
BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream
(file));
LittleEndianDataInputStream littleEndianDataInputStream = new LittleEndianDataInputStream
(bufferedInputStream);
try
{
/*
* mark and read the headers
*/
bufferedInputStream.Mark(MaxHeaderSize);
ReadHeaders(littleEndianDataInputStream);
/*
* read the block data
*/
bufferedInputStream.Reset();
ReadBlocks(bufferedInputStream);
}
finally
{
littleEndianDataInputStream.Close();
bufferedInputStream.Close();
}
}
catch (Exception e)
{
throw new PDXReaderException("Exception in read", e);
}
}
/// <summary>This method finds all the blocks with their types and offsets</summary>
/// <exception cref="Com.Khubla.Pdxreader.Api.PDXReaderException"/>
private void PreReadBlocks(File file)
{
try
{
/*
* set up streams
*/
BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream
(file));
LittleEndianDataInputStream littleEndianDataInputStream = new LittleEndianDataInputStream
(bufferedInputStream);
try
{
/*
* offset tracker
*/
int fileOffset = 0;
/*
* loop
*/
while (littleEndianDataInputStream.Available() > 1)
{
/*
* read type
*/
int type = littleEndianDataInputStream.ReadByte();
/*
* get an appropriate Block type
*/
MBTableBlock.RecordType recordType = MBTableBlock.GetRecordType(type);
/*
* ok?
*/
if (null != recordType)
{
MBTableBlock mbTableBlock = MBTableBlockFactory.GetMBTableBlock(recordType);
/*
* set the offset
*/
mbTableBlock.SetFileOffset(fileOffset);
/*
* pre-read
*/
int bytesPreRead = mbTableBlock.PreRead(littleEndianDataInputStream);
/*
* add to list
*/
blocks.Add(mbTableBlock);
/*
* skip forward to next one
*/
int bytesToSkip = mbTableBlock.GetSizeofBlock() - (1 + bytesPreRead);
long skipped = littleEndianDataInputStream.Skip(bytesToSkip);
if (0 != skipped)
{
/*
* update the offset
*/
fileOffset += mbTableBlock.GetSizeofBlock();
}
}
}
}
finally
{
littleEndianDataInputStream.Close();
bufferedInputStream.Close();
}
}
catch (Exception e)
{
throw new PDXReaderException("Exception in read", e);
}
}
