[REBOL] Re: Input validation routines
From: petr:krenzelok:trz:cz at: 27-Aug-2003 9:14
Robert M. Muench wrote:
>Hi, has someone written a set of input validation routines/dialect,
>where I can check data against some format specification? Those things
>one knows from Excel, databases etc. for dates, number, strings, length
>of input and so on. Thanks. Robert
ha, Robert progressing in db area, right? :-) I proposed field/match
item, kind of a dialect. It is quite some time I last time looked at VID
style sources, but I think that event handlers live in separate context
or so. My idea was to be able to e.g. have fields like:
(99) - (999 999)
where "9" means 'number from 0 - 9, whereas e.g. "x" means char. Cursor
should move so that you would be able to type only numbers, chars "() -"
(those would be skipped, you would not be able to delete them, etc.
- date format - I saw various implementations :-) Well, in
DOS, all letters were of the same width, but in GUI environments, it is
not the same, so " . ." move as you type, it is a question how to do
properly hilighting (some implementations failed, as you was able to
delete those date-format dots, etc.)
I think that dialects/rules are the way to go.