public STDFRecord ReadRecord()
{
ushort num = 0;
byte num2 = 0;
byte num3 = 0;
long position = 0L;
STDFRecord record = null;
if (this.Mode == STDFFileMode.Write)
{
throw new Exception("Cannot read from a file opened for write");
}
position = this.br.BaseStream.Position;
this.BeginningOfBadRecord = position;
if (this.Processor == BYTE_ORIENTATION.UNKNOWN)
{
this.Processor = this.DetermineProcessorType(this.br);
}
if ((position + 4L) > this.FileLength)
{
return null;
}
num = this.br.ReadUInt16();
num2 = this.br.ReadByte();
num3 = this.br.ReadByte();
if (this.Processor != BYTE_ORIENTATION.IBMPC)
{
uint num5 = Convert.ToUInt32(num);
num5 = ((num5 >> 8) | (num5 << 8)) & 0xffff;
num = Convert.ToUInt16(num5);
}
if ((position + num) >= this.FileLength)
{
throw new Exception("File not long enough, Probable File Corruption at offset:" + this.br.BaseStream.Position.ToString());
}
int num6 = (num3 << 8) + num2;
switch (num6)
{
case 0xa14:
record = new BPSRecord();
break;
case 0xa32:
record = new GDRRecord();
break;
case 0xa00:
record = new FARRecord();
break;
case 0xa01:
record = new MIRRecord();
break;
case 0xa02:
record = new WIRRecord();
break;
case 0xa05:
record = new PIRRecord();
break;
case 0xa0f:
record = new PTRRecord();
break;
case 0x1400:
record = new ATRRecord();
break;
case 0x1401:
record = new MRRRecord();
break;
case 0x1402:
record = new WRRRecord();
break;
case 0x1405:
record = new PRRRecord();
break;
case 0xf0f:
record = new MPRRecord();
break;
case 0x1e01:
record = new PCRRecord();
break;
case 0x1e02:
record = new WCRRecord();
break;
case 0x1414:
record = new EPSRecord();
break;
case 0x140f:
record = new FTRRecord();
break;
case 0x2801:
record = new HBRRecord();
break;
case 0x3201:
record = new SBRRecord();
break;
case 0x1e0a:
record = new TSRRecord();
break;
case 0x1e32:
record = new DTRRecord();
break;
case 0x3c01:
record = new PMRRecord();
break;
case 0x3e01:
record = new PGRRecord();
break;
case 0x3f01:
record = new PLRRecord();
break;
case 0x4601:
record = new RDRRecord();
break;
case 0x5001:
record = new SDRRecord();
break;
default:
{
StringBuilder builder = new StringBuilder(0x800);
builder.AppendFormat("Corrupt stdf file encountered {0}\n", this.FileProcessing);
builder.AppendFormat("\tLast Known Good Position 0x{0:X}\n", this.LastGoodFilePosition);
builder.AppendFormat("\tLast Known Good Record {0)\n", this.LastGoodSTDFRecord.ToString());
builder.AppendFormat("\tBeginning of Bad Record 0x{0:X}\n", this.BeginningOfBadRecord);
break;
}
}
record.REC_LEN = num;
record.RemainingBytes = num;
record.RecordNumber = this.RecordCount += 1L;
record.RECORD_TYPE = (STDFRecordType) num6;
record.Processor = this.Processor;
record.FilePos = position;
record.Read(this.br);
this.br.BaseStream.Position = (record.FilePos + record.REC_LEN) + 4L;
this.LastGoodFilePosition = position;
this.LastGoodSTDFRecord = record.RECORD_TYPE;
if (this.FileLength > 0L)
{
this.Percent = (Convert.ToDouble(position) / Convert.ToDouble(this.FileLength)) * 100.0;
return record;
}
this.Percent = 0.0;
return record;
}