What more do I have to do?

Let's see . . . I now have these working:

1. function CreateFreshExpiryDataFile
2. function AppendExpiryDataToFile
3. some code to parse the ExpiryData.xml file.

I feel it's time to re-visit and refine my previous pseudo-code - here is my refined 2nd attempt at a main program. I'm assuming that an empty, formatted ExpiryData.xml file exists at initialisation.
 

Main program pseudo-code (2nd attempt) Use ConvertExpiryDateToYYMMDD to re-format referring page expiry date If the referring page has expired then If the referring page is a valid LSBU myweb page then AppendExpiryDataToFile If ((today is a Monday) but (ExpiryData file is pre-today)) then EmailExpiryMessages Copy ExpiryData.xml to ExpiryDataLastWeek.xml CreateFreshExpiryDataFile Endif Endif Endif

Notes...

• bold text represents a function
   
• in version 1 there were quite a few lines of code devoted to accepting dates in d/m/yy, d/mm/yy, dd/m/yy or dd/mm/yy format and converting these to yymmdd; I'll put these into a self-contained function (ConvertExpiryDateToYYMMDD)
   
• the function EmailExpiryMessages will, of course, be based on the code I already have that parses the ExpiryData.xml file
   
• I feel that checking whether 'the referring page is a valid LSBU myweb page' is something that should be in the main program rather than within the AppendExpiryDataToFile function, as it is currently.