Deruago / DREGX

C++ Regex Fuzzer and Analyzer

DREGX

Overview

DREGX is a Regex Fuzzer and Analyzer for C++. There are little regex fuzzers and analyzers for C++ which allow the user to deeply understand relations between various regexes. DREGX makes it easy to understand and test regexes.

How to install DREGX?

DREGX uses CMake for installation. Make sure you have the latest version of CMake installed. You can install it here: https://cmake.org/download/

git clone https://github.com/Deruago/DREGX
cd ./DREGX
mkdir build
cd build
cmake ..
cmake --build . --target install

Examples

Get minimal match

#include "Deamer/Dregx/Fuzzer.h"
#include <iostream>

int main()
{
    auto fuzzer = ::deamer::dregx::Fuzzer();
    fuzzer.SetRegex("[a-zA-Z]+");
    auto example = fuzzer.GetMinimalExample();
    
    // output: a
    std::cout << "output: " << example << "\n"; 
    
    return 0;
}

Check if some regex is subset of other regex

#include "Deamer/Dregx/Analyzer.h"
#include <iostream>

int main()
{
    auto analyzer = ::deamer::dregx::Analyzer();
    analyzer.SetRegex("[a]+");
    bool isSubset = analyzer.IsRegexSubsetOf("[a-zA-Z]+");
    
    // output: true
    std::cout << std::boolalpha;
    std::cout << "output: " << isSubset << "\n"; 
    
    return 0;
}

Documentation

See the Deamer Documentation repo: https://github.com/Deruago/DeamerDocumentation