protected T GetRecord <T>(
CreateRecordCallback <T> creationCallback,
bool ignoreUnknown)
where T : VssRecord
{
var recordHeader = new RecordHeader();
recordHeader.Read(reader);
var recordReader = reader.Extract(recordHeader.Length);
// comment records always seem to have a zero CRC
if (recordHeader.Signature != CommentRecord.SIGNATURE)
{
recordHeader.CheckCrc();
}
var record = creationCallback(recordHeader, recordReader);
if (record != null)
{
// double-check that the object signature matches the file
recordHeader.CheckSignature(record.Signature);
record.Read(recordReader, recordHeader);
}
else if (!ignoreUnknown)
{
throw new UnrecognizedRecordException(recordHeader,
string.Format("Unrecognized record signature {0} in item file",
recordHeader.Signature));
}
return(record);
}
protected T GetRecord <T>(
CreateRecordCallback <T> creationCallback,
bool ignoreUnknown,
int offset)
where T : VssRecord
{
reader.Offset = offset;
return(GetRecord <T>(creationCallback, ignoreUnknown));
}
protected T GetNextRecord <T>(
CreateRecordCallback <T> creationCallback,
bool skipUnknown)
where T : VssRecord
{
while (reader.Remaining > RecordHeader.LENGTH)
{
var record = GetRecord <T>(creationCallback, skipUnknown);
if (record != null)
{
return(record);
}
}
return(null);
}
