From b6bfcbdc335cccc2d96c1be28272628bd19db307 Mon Sep 17 00:00:00 2001
From: Riyyi <riyyi3@gmail.com>
Date: Thu, 9 Sep 2021 15:14:17 +0200
Subject: [PATCH] Util: Support for optional arguments in ArgParser

---
 src/util/argparser.cpp | 31 ++++++++++++++++++++-----------
 1 file changed, 20 insertions(+), 11 deletions(-)

diff --git a/src/util/argparser.cpp b/src/util/argparser.cpp
index b90bb6a..c8fec8e 100644
--- a/src/util/argparser.cpp
+++ b/src/util/argparser.cpp
@@ -191,20 +191,29 @@ bool ArgParser::parseLongOption(std::string_view option, std::string_view next)
 
 bool ArgParser::parseArgument(std::string_view argument)
 {
-	// No handler for argument
-	if (m_argumentIndex >= m_arguments.size()) {
-		return false;
-	}
+	bool result = true;
 
-	Argument& currentArgument = m_arguments.at(m_argumentIndex);
-	bool result = currentArgument.acceptValue(argument.data());
+	for (;;) {
+		// Run out of argument handlers
+		if (m_argumentIndex >= m_arguments.size()) {
+			return false;
+		}
 
-	if (result) {
-		currentArgument.addedValues++;
-	}
+		Argument& currentArgument = m_arguments.at(m_argumentIndex);
+		result = currentArgument.acceptValue(argument.data());
+
+		if (result) {
+			currentArgument.addedValues++;
+			if (currentArgument.addedValues >= currentArgument.maxValues) {
+				m_argumentIndex++;
+			}
+		}
+		else if (currentArgument.minValues == 0) {
+			m_argumentIndex++;
+			continue;
+		}
 
-	if (currentArgument.addedValues >= currentArgument.maxValues) {
-		m_argumentIndex++;
+		break;
 	}
 
 	return result;