public IEnumerable <ISTDFRecord> ReadFile(string path)
{
DateTime start = DateTime.Now;
List <ISTDFRecord> Records = new List <ISTDFRecord>();
ISTDFRecord record;
using Stream stream = File.OpenRead(path);
using STDFRecordFormatter recordFormatter = new STDFRecordFormatter();
recordFormatter.Converter.SwapBytes = true;
do
{
record = (ISTDFRecord)recordFormatter.Deserialize(stream);
if (record != null)
{
//Console.WriteLine(record.ToString());
Records.Add(record);
}
} while (!recordFormatter.EndOfStream);
DateTime end = DateTime.Now;
double execTime = (end - start).TotalMilliseconds;
Console.WriteLine(string.Format("{0} records read from file in {1} milliseconds.", Records.Count, execTime));
stream.Close();
return(Records);
}
public int WriteFile(string path, IEnumerable <ISTDFRecord> records)
{
DateTime start = DateTime.Now;
using Stream stream = File.Open(path, FileMode.Create, FileAccess.Write);
using STDFRecordFormatter recordFormatter = new STDFRecordFormatter();
int count = 0;
foreach (var record in records)
{
recordFormatter.Serialize(stream, record);
count++;
}
DateTime end = DateTime.Now;
double execTime = (end - start).TotalMilliseconds;
Console.WriteLine(string.Format("{0} records written to file in {1} milliseconds.", count, execTime));
stream.Close();
return(count);
}
public int CompareRecords(string path, IEnumerable <ISTDFRecord> records)
{
DateTime start = DateTime.Now;
ISTDFRecord record;
using Stream stream = File.OpenRead(path);
using STDFRecordFormatter recordFormatter = new STDFRecordFormatter();
int index = 0;
int mismatch = 0;
do
{
if (index == 40650)
{
;
}
record = (ISTDFRecord)recordFormatter.Deserialize(stream);
if (record != null)
{
if (record.RecordType == records.ElementAt(index).RecordType&&
record.RecordLength != records.ElementAt(index).RecordLength)
{
mismatch++;
Console.WriteLine(string.Format("Record length mismatch. Record # {0}, Type {1}, original length = {2}, new length = {3}",
index, record.GetType().Name, records.ElementAt(index).RecordLength, record.RecordLength));
}
index++;
}
} while (!recordFormatter.EndOfStream);
DateTime end = DateTime.Now;
double execTime = (end - start).TotalMilliseconds;
Console.WriteLine(string.Format("{0} records read from file in {1} milliseconds. {2,3:P0} of records passed length comparison.", records.Count(), execTime, (double)(1 - mismatch / index)));
stream.Close();
return(mismatch);
}
