Flexible search and listing tool for field names in a subscripted structure array

Searches for field names in an optionally subscripted structure array and lists them

Call options:
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SearchStruct AStruct
SearchStruct('AStruct')
- Displays all fields in (optionally subscripted) structured array AStruct with their complete ("long") names.

SearchStruct AStruct SearchString
SearchStruct('AStruct','SearchString')
- Displays all fields in structured array AStruct of which the name contains SearchString (default = case-insensitive).

SearchStruct AStruct SearchString SearchOption
SearchStruct('AStruct', 'SearchString', 'SearchOption')
- The following options may be indicated by SearchOption:
default - Default (case-insensitive search, see above).
case - Case-sensitive search.
exact - Only those field names are listed which matches the SearchString exactly (case-insensitive search).
exactcase - The same as "exact", but with case-sensitive search.
begin - Only those field names are listed of which the beginning matches the SearchString (case-insensitive search).
begincase - The same as "begin", but with case-sensitive search.
end - Only those field names are listed of which the end matches the SearchString (case-insensitive search).
endcase - The same as "end", but with case-sensitive search.
If no option is given, "default" is assumed.

FoundFieldsList = SearchStruct('AStruct', ...)
- A list of the found field names is stored as a cellular string array into the output variable FoundFieldsList.

If no output variable is indicated, the names are printed as a list on the screen.

Example of function call:
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SearchStruct ExampleStruct afield

Result (example):
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ExampleStruct.AField
ExampleStruct.AnotherField{2,3}.AField
ExampleStruct.AnotherField{2,3}.AField2