Parser::extractCommand: parse with string_view instead of regex to avoid inconsistent behavior in libcs

parser.cpp

@@ -65,15 +65,19 @@ std::vector<std::string> Parser::extractCategories(std::string content) const
 
 std::string Parser::extractCommand(std::string cmdname, std::string content) const
 {
-	std::string regstr = "(\\s|\\S)*\\[cmd\\:" + cmdname + "\\](.*?)\\[/cmd\\:" + cmdname + "\\](\\s|\\S)*";
-	std::regex reg{regstr};
-	std::smatch match;
-	if(std::regex_match(content, match, reg))
-	{
+	std::string cmd = "[cmd:" + cmdname + "]";
+	std::string cmdend = "[/cmd:" + cmdname + "]";
 
-		if(match.size() > 1)
+	std::string_view view = content;
+	size_t pos = 0;
+	if((pos = view.find(cmd)) != std::string::npos)
+	{
+		view.remove_prefix(pos);
+		view.remove_prefix(cmd.size());
+		if((pos = view.find(cmdend)) != std::string::npos)
 		{
-			return match.str(2);
+			auto result = view.substr(0, pos);
+			return std::string{result};
 		}
 	}
 	return "";