I am looking for a Regular expression to validate input string so that it contains ASCII characters from 32 to 126. I am currently using [ -~] and this Regular is working as expected.

I also need to check that the input String must not contain below characters :-

1. % (Percentage)
2. " (Double Quotes)

CodePudding user response：

[ !#$&-~] should do the trick.

Since " is 34 and % is 37 it's simpler to just list the early acceptable characters and use a range for the rest.

CodePudding user response：

To check if a string contains only ASCII characters and does not contain % and/or " you can use

^(?!<=["%])[ !#$&-~]*(?!=["%])$

You can check a demo here