Android Question Get a input hint generated for a certain regex

[Michael2150]

Hi this isn't an important question more just out of interest, but I was wondering if there is some sort of algorithm that could generate an input hint for something like an edittext. This hint should be derived from a regex. For example the regex input being "^(?=.*[1-9].*)[0-9]{3}$" and the output being something like, "input a 3 digit number from 000 - 999". It would be really interesting to try and work on something like this as I can't find anything similar online

 

[emexes]

www.debuggex.com isn't quite what you're looking for, but it's headed in the right direction ?

 

[Michael2150]

www.debuggex.com isn't quite what you're looking for, but it's headed in the right direction ?

View attachment 96072

Hmm looks interesting I'll definitely have a look at that. Thanks

 

[Erel]

(a bit related: [B4X] RegexBuilder - Builder for Regular Expressions )

 

[Michael2150]

Thanks Erel I had a look at that and its a very useful class and it could really help with deconstructing a regex in some way I haven't figured out yet and play around with ouputs to the user to fill in the correct input.