/// <summary>
/// Will return a list of all pages in the block
/// </summary>
/// <returns></returns>
public List <TPSPage> getPages()
{
RandomAccess ra = RandomAccess.GetInstance();
List <TPSPage> pages = new List <TPSPage>();
ra.jumpAbs(_start); //jump to the start of the block
try{
while (ra.position < _end) //while we have not fallen off the end of the file
{
TPSPage page = new TPSPage();
page.Process();
pages.Add(page);
//pages always start on the position % 100 = 0
//So let's jump forward to find the next start
if ((ra.position & 0xFF) != 0x00)
{
ra.jumpAbs((ra.position & 0xFFFFFF00L) + 0x0100);
}
//we can find the next page because the address of the page will be in the data
int addr = 0;
if (!ra.isAtEnd())
{
do
{
addr = ra.leLong();
ra.jumpRelative(-4); //backup 4 bytes
if (addr != ra.position)
{
ra.jumpRelative(0x0100);
}
}while ((addr != ra.position) && !ra.isAtEnd());
}
}
}catch (Exception ex) {
;
}
return(pages);
}
/// <summary>
/// Will read the next TPSRecord.
/// True or false depending if there is another one in the queue
/// </summary>
/// <returns></returns>
public bool Read()
{
//if there is anything on our temporary stack, just send the first one back to the user and remove it from thelist
if (_returnDataStack.Count > 0)
{
_currentRow = _returnDataStack[0];
_returnDataStack.RemoveAt(0);
return(true);
}
//read page after page until either there are no more pages or we have something on our stack to return
while (_tpsPages.Count > 0 && _returnDataStack.Count < 1)
{
TPSPage page = _tpsPages[0];
_tpsPages.RemoveAt(0); //pop the page off the stack
List <TPSRecord> pageRecords = page.GetRecords();
foreach (TPSRecord record in pageRecords)
{
//go through each record to see if we need it
if (record.RecordType == TPSRecord.TYPE_DATA)
{
//Check if this record belongs to a table that we are searchin for
//Notice that we need to generate the table ID before we can check
//This part is normally in the TableDataRecord file, but we want to know before
//parsing the whole record in the name of efficiency
byte[] recordTableIDBA = new byte[4];
if (record.RecordData.Length < 4)
{
continue;
}
//Get the tableID ( it is backwards )
recordTableIDBA[0] = record.RecordData[3];
recordTableIDBA[1] = record.RecordData[2];
recordTableIDBA[2] = record.RecordData[1];
recordTableIDBA[3] = record.RecordData[0];
int recordTableID = BitConverter.ToInt32(recordTableIDBA, 0);
if (_schema.TableID == recordTableID)
{
//Generate the record
Record.TableDataRecord tdr = new Record.TableDataRecord(record, _schema);
Dictionary <string, string> newRow = new Dictionary <string, string>();
for (int i = 0; i < tdr.TableDataRow.Table.Columns.Count; i++)
{
newRow.Add(tdr.TableDataRow.Table.Columns[i].ColumnName, tdr.TableDataRow[tdr.TableDataRow.Table.Columns[i].ColumnName].ToString());
}
_returnDataStack.Add(newRow);
}
}
}
}
//Now send back a record. If not, we're out and send false
if (_returnDataStack.Count > 0)
{
_currentRow = _returnDataStack[0];
_returnDataStack.RemoveAt(0);
return(true);
}
else
{
return(false);
}
return(false);
}
