This program was written to easily check answers for my Discrete math homework.

Build

git clone https://github.com/xirzo/regexmatcher.git
cd regexmatcher
cmake -B build/
cmake --build build/ 
./build/bin/regex

Now you may just edit the bin/main.cpp with your regex and recompile it.

Example

Here’s a sample regex used in the program:

(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*

Cases:

Regex	Input	Result
(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*	aaaa@aaaaaaa	Match
(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*	aaaa@aaa...aaa	Match
(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*	aaaa@a.a.a.a	Match
(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*	aaaa@.a.a.a	Match
(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*	aaaa@.....a	Match
(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*	aaaa@.....	No Match
(a|.|-)(a|.|-)*@((a*.*a)|a)((a*.*a)|a)*	aaaa@aaaa....	No Match