vector PythonLibrarySession::GetTopLevel()

in language-extensions/python/src/PythonLibrarySession.cpp [254:310]
39 lines of code
8 McCabe index (conditional complexity)

vector<fs::directory_entry> PythonLibrarySession::GetTopLevel(string libName, string installDir)
{
	vector<fs::directory_entry> artifacts;
	regex_constants::syntax_option_type caseInsensitive = regex_constants::icase;

	// Normalize library names by replacing all dashes and underscores with regex for either
	//
	string regexLibName = regex_replace(libName, regex("(-|_)"), "(-|_)");

	if (fs::exists(installDir))
	{
		for (const fs::directory_entry &entry : fs::directory_iterator(installDir))
		{
			string pathFilename = entry.path().filename().string();

			// The top_level.txt file is in the egg-info or dist-info folder
			//
			regex egg("^" + regexLibName + "-(.*)egg(.*)", caseInsensitive);
			regex distinfo("^" + regexLibName + "-(.*)dist-info", caseInsensitive);

			if (regex_match(pathFilename, egg) ||
				regex_match(pathFilename, distinfo))
			{
				artifacts.push_back(entry);

				// The top_level.txt file tells us what items this package put into the 
				// installation directory that we will need to delete to uninstall.
				//
				fs::path topLevelPath = entry.path();
				topLevelPath = topLevelPath.append("top_level.txt");

				if (fs::exists(topLevelPath))
				{
					// Read in the top_level file to find what the top_level folders and files are
					//
					ifstream topLevelFile(topLevelPath);
					string str;
					while (getline(topLevelFile, str))
					{
						if (str.size() > 0)
						{
							fs::path path(installDir);
							artifacts.push_back(fs::directory_entry(path.append(str)));
						}
					}

					topLevelFile.close();
					break;
				}

				break;
			}
		}
	}

	return artifacts;
}