Util+Test: Add support for '--' to enable non-option mode

src/util/argparser.cpp

@@ -204,6 +204,9 @@ bool ArgParser::parse(int argc, const char* argv[])
 {
 	bool result = true;
 
+	// By default parse all '-' prefixed parameters as options
+	m_nonOptionMode = false;
+
 	// Get program name
 	m_name = argv[0] + std::string_view(argv[0]).find_last_of('/') + 1;
 
@@ -214,6 +217,7 @@ bool ArgParser::parse(int argc, const char* argv[])
 	for (; m_optionIndex < argc; ++m_optionIndex) {
 		printf("argv[%d]: %s\n", m_optionIndex, argv[m_optionIndex]);
 
+		// Get the current and next parameter
 		argument = argv[m_optionIndex];
 		if (m_optionIndex + 1 < argc && argv[m_optionIndex + 1][0] != '-') {
 			next = argv[m_optionIndex + 1];
@@ -222,15 +226,20 @@ bool ArgParser::parse(int argc, const char* argv[])
 			next = {};
 		}
 
+		// Stop parsing '-' prefixed parameters as options afer '--'
+		if (argument.compare("--") == 0) {
+			m_nonOptionMode = true;
+		}
+
 		// Long Option
-		if (argument[0] == '-' && argument[1] == '-') {
+		if (!m_nonOptionMode && argument[0] == '-' && argument[1] == '-') {
 			argument = argument.substr(argument.find_first_not_of('-'));
 			if (!parseLongOption(argument, next)) {
 				result = false;
 			}
 		}
 		// Short Option
-		else if (argument[0] == '-') {
+		else if (!m_nonOptionMode && argument[0] == '-') {
 			argument = argument.substr(argument.find_first_not_of('-'));
 			if (!parseShortOption(argument, next)) {
 				result = false;

src/util/argparser.h

@@ -60,6 +60,7 @@ private:
 	bool parseLongOption(std::string_view option, std::string_view next);
 
 	int m_optionIndex { 1 };
+	bool m_nonOptionMode { false };
 	bool m_exitOnFirstError { true };
 	bool m_errorMessages { true };
 	// TODO: Implement this, maybe combine with error messages flag, enum class? or bitfield