1 files changed, 63 insertions, 0 deletions
diff --git a/libraries/classparser/src/membuffer.h b/libraries/classparser/src/membuffer.h
new file mode 100644
index 00000000..ab83412a
--- /dev/null
+++ b/libraries/classparser/src/membuffer.h
@@ -0,0 +1,63 @@
+#pragma once
+#include <stdint.h>
+#include <string>
+#include <vector>
+#include <exception>
+#include "javaendian.h"
+
+namespace util
+{
+class membuffer
+{
+public:
+	membuffer(char *buffer, std::size_t size)
+	{
+		current = start = buffer;
+		end = start + size;
+	}
+	~membuffer()
+	{
+		// maybe? possibly? left out to avoid confusion. for now.
+		// delete start;
+	}
+	/**
+		* Read some value. That's all ;)
+		*/
+	template <class T> void read(T &val)
+	{
+		val = *(T *)current;
+		current += sizeof(T);
+	}
+	/**
+		* Read a big-endian number
+		* valid for 2-byte, 4-byte and 8-byte variables
+		*/
+	template <class T> void read_be(T &val)
+	{
+		val = util::bigswap(*(T *)current);
+		current += sizeof(T);
+	}
+	/**
+		* Read a string in the format:
+		* 2B length (big endian, unsigned)
+		* length bytes data
+		*/
+	void read_jstr(std::string &str)
+	{
+		uint16_t length = 0;
+		read_be(length);
+		str.append(current, length);
+		current += length;
+	}
+	/**
+		* Skip N bytes
+		*/
+	void skip(std::size_t N)
+	{
+		current += N;
+	}
+
+private:
+	char *start, *end, *current;
+};
+}