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moodmosaic / Fare

Port of Java dk.brics.automaton and xeger, mostly used for generating strings that match a specific regular expression.
http://www.brics.dk/automaton/
MIT License
183 stars 43 forks source link

Cannot recognize "(?!0000)\d{4}" #24

Open autobot1122 opened 7 years ago

autobot1122 commented 7 years ago

var randString = string.Empty; Xeger xegerGenerator = new Xeger("(?!0000)\d{4}"); randString = xegerGenerator.Generate();

randString = "!00004377";

randString should be any four digits except "0000" (four zeros)

moodmosaic commented 7 years ago

Thank you for reporting this!

Project Fare turns Regular Expressions into Automatons by applying the algorithms of dk.brics.automaton and xeger.

Unfortunately, I don't have an answer to your question, as Project Fare is really a port of the above Java projects. – We'd have to try

!00004377

in Java and compare the results.

You may use a different pattern or use a different engine to reverse the Regular Expression into an Automaton. As an example, you can use the Rex engine.

I've now also updated the README to include the above.