private ISegment TryToRecoverCriticalDataFromMessage(string message)
{
ISegment msh = null;
if (!message.StartsWith("MSH|"))
{
return(null);
}
//try to get MSH segment
int locStartMSH = message.IndexOf("MSH");
if (locStartMSH < 0)
{
return(null);
}
int locEndMSH = message.IndexOf('\r', locStartMSH + 1);
if (locEndMSH < 0)
{
locEndMSH = message.Length;
}
String mshString = message.Substring(locStartMSH, (locEndMSH) - (locStartMSH));
//find out what the field separator is
char fieldSep = mshString[3];
//get field array
String[] fields = PipeParser.Split(mshString, Convert.ToString(fieldSep));
try
{
//parse required fields
String encChars = fields[1];
char compSep = encChars[0];
String messControlID = fields[9];
String[] procIDComps = PipeParser.Split(fields[10], Convert.ToString(compSep));
//fill MSH segment
String version = NHapi.Model.V251.Constants.VERSION; //default
try
{
version = contextParser.GetVersion(message);
}
catch (Exception)
{
/* use the default */
}
//IModelClassFactory factory = parser.Factory;
//msh = new MSH(new NHapiBugsFixing.V251(factory), factory);
//msh = new GenericSegment(new NHapiBugsFixing.GenericMessageVersion(version), "MSH");
Terser.Set(msh, 1, 0, 1, 1, Convert.ToString(fieldSep));
Terser.Set(msh, 2, 0, 1, 1, encChars);
Terser.Set(msh, 10, 0, 1, 1, messControlID);
Terser.Set(msh, 12, 0, 1, 1, version);
string messageType = TryTorecoverTheMessageType(message);
if (!string.IsNullOrEmpty(messageType))
{
Terser.Set(msh, 9, 0, 1, 1, messageType.Split('_')[0]);
if (messageType.Split('_').Length > 0)
{
Terser.Set(msh, 9, 0, 2, 1, messageType.Split('_')[1]);
}
}
//Terser.Set(msh, 11, 0, 1, 1, procIDComps[0]);
}
catch (HL7Exception he)
{
_errorMessage.AppendLine(he.Message);
return(null);
}
catch (System.Exception se)
{
_errorMessage.AppendLine(se.Message);
return(null);
}
return(msh);
}
