add encryption/decryption

2 files changed, 16 insertions, 0 deletions

diff --git a/lib/nes/common/containers/string-builder.cc b/lib/nes/common/containers/string-builder.cc
index ad2f97f..8182955 100644
--- a/lib/nes/common/containers/string-builder.cc
+++ b/lib/nes/common/containers/string-builder.cc
@@ -253,4 +253,17 @@ namespace nes
 
 		return status::error_invalid_format_string;
 	}
+
+	auto string_builder::remove_last() -> status
+	{
+		if (length_ == 0) { return status::error_buffer_overflow; }
+
+		length_ -= 1;
+		return status::success;
+	}
+
+	auto string_builder::clear() -> void
+	{
+		length_ = 0;
+	}
 } // namespace nes
\ No newline at end of file
diff --git a/lib/nes/common/containers/string-builder.hh b/lib/nes/common/containers/string-builder.hh
index 7dcbb34..a533461 100644
--- a/lib/nes/common/containers/string-builder.hh
+++ b/lib/nes/common/containers/string-builder.hh
@@ -92,6 +92,9 @@ namespace nes
 			return append_format(fmt, arg_wrappers, arg_count);
 		}
 
+		auto remove_last() -> status;
+		auto clear() -> void;
+
 	private:
 		auto append_format(string_view fmt, format_arg const* args, u32 arg_count) -> status;
 		auto append_format_arg(format_arg, string_view params) -> status;