Emit warnings for typos or mistakes in labels and rules

[ISC-NLeclercq]

There are no warnings for certain mistakes made in the labels and rules file, which stop processing in IRIS. The following mistakes are currently not picked up by python:

• labels:

  • type is missing, e.g. ;1,30,64;NLHoliday;holidays;0;;
  • type is incorrect, e.g. ;1,40;NLWatWie;typeAmbiguous: words 'wat', 'wie', 'hetgeen';0;; -> ":" instead of ";" as separator
  • superfluous space after label line (error message in IRIS: 'Invalid attribute name')

• rules:

  • empty field, e.g. 1980;30;NLOndvw:"dat"|*NLArt:NLAttradj:NLCon:NLPrep|NLNumber:NLQuantity:NLOrdnum|NLTimeconcept|*typeConcept|NLVerb;*|*|NLAdvTime|+Join|*|*|; -> nothing follows last '|'
  • superfluous quotation mark, e.g. 1207;40;SBegin:NLAndOrBut|NLDat"+^NLOndvw|NLCon:NLRelCon|NLVerb;*|NLArt|NLCon|*; -> quotation mark after 'NLDat'