Function isPythonOnPath

src/Skybolt/SkyboltEngine/FindPython.cpp:22–52

bool isPythonOnPath(unsigned int majorVersion, unsigned int minorVersion)
{
	namespace bp = boost::process;
	// Python executable names on windows and linux.
	// Note that we don't include "py" as it only redirects to python - finding py does not mean Python is on the PATH.
	std::string majorVersionString = std::to_string(majorVersion);
	std::string majorMinorVersionString =  majorVersionString + "." + std::to_string(minorVersion);
	std::vector<std::string> commands = {"python", "python" + majorVersionString, "python" + majorMinorVersionString};

	for (const auto& command : commands)
	{
		std::string result;
		bp::ipstream output;
		try
		{
			// Execute command and capture standard output
			bp::child c(command + " --version", bp::std_out > output, bp::std_err > bp::null);
			std::getline(output, result);
			c.wait(); // wait for process to exit

			if (result.find("Python " + majorMinorVersionString) != std::string::npos)
			{
				return true;  // Found Python
			}
		} catch (const std::exception& e)
		{
		}
	}

	return false;
}