public Encoding GetEncoding(string fileName)
{
if (_encoding == null)
{
try
{
ChoETLLog.Info("Determining '{0}' file encoding...".FormatString(fileName));
Encoding = ChoFile.GetEncodingFromFile(fileName);
ChoETLLog.Info("Found '{1}' encoding in '{0}' file.".FormatString(fileName, Encoding));
}
catch (Exception ex)
{
Encoding = Encoding.UTF8;
ChoETLLog.Error("Error finding encoding in '{0}' file. Default to UTF8.".FormatString(fileName));
ChoETLLog.Error(ex.Message);
}
}
return(Encoding);
}
public Encoding GetEncoding(Stream inStream)
{
if (_encoding == null)
{
try
{
ChoETLLog.Info("Determining file encoding...");
Encoding = ChoFile.GetEncodingFromStream(inStream);
ChoETLLog.Info("Found {0} encoding in file.".FormatString(Encoding));
}
catch (Exception ex)
{
Encoding = Encoding.UTF8;
ChoETLLog.Error("Error finding encoding in file. Default to UTF8.");
ChoETLLog.Error(ex.Message);
}
}
return(Encoding);
}
internal void Validate(string line)
{
if (line.IsNullOrWhiteSpace())
{
throw new ChoHL7Exception("Empty line found.");
}
if (!line.StartsWith("MSH"))
{
throw new ChoHL7Exception("Missing Message Header (MSH) record.");
}
if (line.Length <= 3 || line[3] == ChoCharEx.NUL)
{
throw new ChoHL7Exception("Missing or NULL Field Separator found.");
}
else
{
FieldSeparator = line[3];
}
if (FieldSeparator.ToString().IsAlphaNumeric())
{
throw new ChoHL7Exception("Invalid '{0}' field separator found.".FormatString(FieldSeparator));
}
if (line.Length <= 8)
{
throw new ChoHL7Exception("Missing encoding characters.");
}
else
{
var encodingChars = line.Substring(4, 4);
if (encodingChars != @"^~\&")
{
throw new ChoHL7Exception("Invalid encoding characters found.");
}
if (encodingChars.Where(c => c == ChoCharEx.NUL).Any())
{
throw new ChoHL7Exception("NULL encoding characters found.");
}
}
string[] fields = line.Split(FieldSeparator);
if (fields.Length < 11 || fields[11].IsNullOrWhiteSpace())
{
throw new ChoHL7Exception("Missing version.");
}
string versionTxt = fields[11];
var v = versionTxt.ToEnum(typeof(ChoHL7Version));
if (v == null)
{
throw new ChoHL7Exception("'{0}' version not supported.".FormatString(versionTxt));
}
if (LoadWithVersion == null)
{
Version = (ChoHL7Version)v;
ChoETLLog.Info("Version found in message: {0}".FormatString(Version));
}
else
{
ChoETLLog.Info("Version found in message: {0}".FormatString((ChoHL7Version)v));
Version = LoadWithVersion.Value;
ChoETLLog.Info("But loading message with version: {0}".FormatString(Version));
}
if (fields[8].IsNullOrWhiteSpace())
{
throw new ChoHL7Exception("Missing Message Type.");
}
string mtText = fields[8];
var mtEnumTxt = mtText.ToEnum(typeof(ChoHL7MessageType));
if (mtEnumTxt == null)
{
throw new ChoHL7Exception("'{0}' Message Type not supported.".FormatString(mtText));
}
if (LoadWithMessageType == null)
{
MessageType = (ChoHL7MessageType)mtEnumTxt;
ChoETLLog.Info("MessageType found in message: {0}".FormatString(MessageType));
}
else
{
ChoETLLog.Info("MessageType found in message: {0}".FormatString((ChoHL7MessageType)mtEnumTxt));
MessageType = LoadWithMessageType.Value;
ChoETLLog.Info("But loading message with MessageType: {0}".FormatString(MessageType));
}
}