private static ParserStateMachine ParseLineSegment(this X12Doc tempBuildingDoc, ParserStateMachine state, BaseFieldValues lineContent)
{
var retVal = (ParserStateMachine)state.Clone();
var currentLoopProcessed = false;
if (retVal.CurrentLoop != null)
{
List <BaseStdSegment> qualifiedSegments = retVal.CurrentLoop.IsQualified(lineContent, QulificationLevel.TopMost);
if (qualifiedSegments.Count == 1) //check just the top most, so check Loop2000A to see if we have a matching def before moving to check Loop2100A and Loop2200A
{
if (qualifiedSegments[0].IsLoopStarter)
{
retVal.CurrentLoop.ParentLoopCollection.Add();
retVal.CurrentLoop = retVal.CurrentLoop.ParentLoopCollection.LoopEntities.Last();
}
retVal.CurrentLoop.Add(qualifiedSegments[0].CreateBaseStdSegment(lineContent));
currentLoopProcessed = true;
}
else //want to try first level sub loop
{
qualifiedSegments = retVal.CurrentLoop.IsQualified(lineContent, QulificationLevel.FirstChild);
if (qualifiedSegments.Count == 1)
{
if (qualifiedSegments[0].IsLoopStarter)
{
qualifiedSegments[0].OwningLoopCollection.Add();
}
retVal.CurrentLoop = qualifiedSegments[0].OwningLoopCollection.LoopEntities.Last();
retVal.CurrentLoop.Add(qualifiedSegments[0].CreateBaseStdSegment(lineContent));
currentLoopProcessed = true;
}
else if (!qualifiedSegments.Any()) //there were none
{
var currentLoopCollection = retVal.CurrentLoop.ParentLoopCollection;
//if the currentLoop and its subloops can't handle this, lets walk up the stack
while (currentLoopCollection.ParentLoopCollection != null)
{
currentLoopCollection = currentLoopCollection.ParentLoopCollection;
//the segment should never belong to the parent, because we ahve already dipped down to the next level...it CAN belong to a sibling, so check first child level
//for isntance, if we are in Loop2100B and get a segment for Loop2200B - both are children of Loop2000B, so we have to walk up 2100B->2000B then chekc all children (2100B and 2200B)
qualifiedSegments = currentLoopCollection.IsQualified(lineContent, QulificationLevel.FirstChild);
if (qualifiedSegments.Count == 1)
{
if (qualifiedSegments[0].IsLoopStarter) //should always be a starter
{
qualifiedSegments[0].OwningLoopCollection.Add();
retVal.CurrentLoop = qualifiedSegments[0].OwningLoopCollection.LoopEntities.Last();
}
else
{
Console.WriteLine("new loop but not a starter segment?");
retVal.Errors.Add(
new ParserError(
"Parser found a handler, but this handler is in a new Loop and this handler is not marked as a IsLoopStarter-this could be an issue with the coded definition",
X12ErrorTypes.UnknownIntendedLoop, X12ErrorLevel.Loop, retVal.CurrentLoop,
lineContent));
}
//retVal.CurrentLoop = currentLoopCollection.LoopEntities.Last();
retVal.CurrentLoop.Add(qualifiedSegments[0].CreateBaseStdSegment(lineContent));
currentLoopProcessed = true;
}
else
{
//this isn't unexpected...as we walk up the LoopCollection hierarchy, we may not find a match
//for instance, if we are in Loop2220D, we will walk up to Loop2200D, then to Loop2000D, before trying Loop2000E which could be our match
Console.Write("DEUBG - walking up the hierarchy did not find anything");
}
}
}
else //there were multiple and needs a tiebreaker
{
retVal.Errors.Add(
new ParserError("There were multiple handlers found, no way to determine correct state",
X12ErrorTypes.MultipleDefintions, X12ErrorLevel.Loop, retVal.CurrentLoop, lineContent));
}
}
}
//if the current loop we have saved off can not handle it, we should just interogate the whole doc again
//this may not be efficient, we may want to walk back up our stack to make it mo' betta
if (currentLoopProcessed)
{
return(retVal);
}
{
var qualifiedSegments = new List <BaseStdSegment>();
foreach (LoopCollectionBase loopCollection in tempBuildingDoc.TopLevelLoops)
{
qualifiedSegments.AddRange(loopCollection.IsQualified(lineContent, QulificationLevel.FirstChild));
}
if (qualifiedSegments.Count == 1)
{
if (qualifiedSegments[0].IsLoopStarter) //should always be
{
qualifiedSegments[0].OwningLoopCollection.Add();
}
else
{
retVal.Errors.Add(
new ParserError("Parser found a handler (at TopLevelLoop), but this handler is in a new Loop and this handler is not marked as a IsLoopStarter-this could be an issue with the coded definition",
X12ErrorTypes.UnknownIntendedLoop, X12ErrorLevel.Loop, retVal.CurrentLoop, lineContent));
}
retVal.CurrentLoop = qualifiedSegments[0].OwningLoopCollection.LoopEntities.Last();
retVal.CurrentLoop.Add(qualifiedSegments[0].CreateBaseStdSegment(lineContent));
}
else if (qualifiedSegments.Count == 0)
{
retVal.Errors.Add(
new ParserError("We found no handlers for this segment",
X12ErrorTypes.NotDefined, X12ErrorLevel.Loop, retVal.CurrentLoop, lineContent));
}
else if (qualifiedSegments.Count > 1)
{
retVal.Errors.Add(
new ParserError("There were multiple handlers found, no way to determine correct state",
X12ErrorTypes.MultipleDefintions, X12ErrorLevel.Loop, retVal.CurrentLoop, lineContent));
}
else
{
retVal.Errors.Add(
new ParserError("The parse failed to find a good handler and you should never see this message",
X12ErrorTypes.Unknown, X12ErrorLevel.Unknown, retVal.CurrentLoop, lineContent));
}
}
return(retVal);
}
/// <summary>
/// Given a file, parse the x12 into the hard coded defintion of a specific format T
/// </summary>
/// <typeparam name="T">specific format type to parse into</typeparam>
/// <param name="fullFilePath">location of the x12 file</param>
/// <returns>A list of X12 documents, each of which has a unique group of ISA/GS/ST/BHT, if a file has multiple of any of these, they will be rendered as a seperate X12Document</returns>
public static IEnumerable <X12Doc> ParseFile <T>(string fullFilePath) where T : X12Doc
{
X12Doc tempBuildingDoc = (T)Activator.CreateInstance(typeof(T), args: new object[] { true });
var newHeaderSection = false;
var newTrailerSection = false;
var parserState = new ParserStateMachine();
var retDocs = new List <X12Doc>();
var sStream = new SegmentStream(File.OpenRead(fullFilePath), ref tempBuildingDoc);
var lineContent = new BaseFieldValues(sStream.ReadNextLine(tempBuildingDoc.DocDelimiters));
List <string> headerSplit = HeaderSegments.Split(',').ToList();
List <string> trailerSplit = TrailerSegments.Split(',').ToList();
while (lineContent != null)
{
//is a head segment
if (headerSplit.Contains(lineContent[0]))
{
if (!newHeaderSection)
{
//copy the errors to date into the tempBuildingDoc so we can see if there are any errors
tempBuildingDoc.AddParsingErrors(parserState.Errors);
parserState.Errors.Clear();
//if we just had a trailer section, then we need to create a new tempBuildingDoc to start a new X12 document
if (newTrailerSection)
{
tempBuildingDoc = (T)Activator.CreateInstance(typeof(T), args: new object[] { true });
}
retDocs.Add(tempBuildingDoc);
newHeaderSection = true;
newTrailerSection = false;
}
if (tempBuildingDoc.BeginHierarchicalTransaction.IsQualified(lineContent))
{
tempBuildingDoc.BeginHierarchicalTransaction.Populate(lineContent);
}
else if (tempBuildingDoc.TransactionSetHeader.IsQualified(lineContent))
{
tempBuildingDoc.TransactionSetHeader.Populate(lineContent);
}
else if (tempBuildingDoc.InterchagneControlHeader.IsQualified(lineContent))
{
tempBuildingDoc.InterchagneControlHeader.Populate(lineContent);
}
else if (tempBuildingDoc.FunctionGroupHeader.IsQualified(lineContent))
{
tempBuildingDoc.FunctionGroupHeader.Populate(lineContent);
}
else //should never happen, but defensive
{
parserState.Errors.Add(
new ParserError("Header segment found no IsQualified handlers and failed to parse",
X12ErrorTypes.NotDefined, X12ErrorLevel.Segment, parserState.CurrentLoop, lineContent));
}
}
else if (trailerSplit.Contains(lineContent[0]))//is a trailer segment
{
newTrailerSection = true;
newHeaderSection = false;
if (tempBuildingDoc.TransactionSetTrailer.IsQualified(lineContent))
{
tempBuildingDoc.TransactionSetTrailer.Populate(lineContent);
}
else if (tempBuildingDoc.FunctionalGroupTrailer.IsQualified(lineContent))
{
tempBuildingDoc.FunctionalGroupTrailer.Populate(lineContent);
}
else if (tempBuildingDoc.InterchangeControlTrailer.IsQualified(lineContent))
{
tempBuildingDoc.InterchangeControlTrailer.Populate(lineContent);
}
else//should never happen, but defensive
{
parserState.Errors.Add(
new ParserError("Trailer segment found no IsQualified handlers and failed to parse",
X12ErrorTypes.NotDefined, X12ErrorLevel.Segment, parserState.CurrentLoop, lineContent));
}
}
else //has to be in the doc def
{
newHeaderSection = false;
newTrailerSection = false;
parserState = tempBuildingDoc.ParseLineSegment(parserState, lineContent);
}
lineContent = sStream.ReadNextLine(tempBuildingDoc.DocDelimiters);
}
return(retDocs);
}
