Move dependencies to the top level.

deps/libtoolchain/include/tc/io/IOUtil.h

@@ -0,0 +1,63 @@
+	/**
+	 * @file IOUtil.h
+	 * @brief Declaration of tc::io::IOUtil
+	 * @author Jack (jakcron)
+	 * @version 0.1
+	 * @date 2020/04/10
+	 **/
+#pragma once
+#include <tc/types.h>
+
+namespace tc { namespace io {
+
+	/**
+	 * @class IOUtil
+	 * @brief Utility functions for IO based classes.
+	 **/
+class IOUtil
+{
+public:
+		/**
+		 * @brief Convert size_t to int64_t safely.
+		 **/
+	static int64_t castSizeToInt64(size_t size);
+
+		/**
+		 * @brief Convert int64_t to size_t safely.
+		 **/
+	static size_t castInt64ToSize(int64_t length);
+
+		/**
+		 * @brief Get size of available data for an IO class performing a read or write operation.
+		 * 
+		 * @param[in] data_length Total length of data.
+		 * @param[in] data_offset Byte offset in data to begin operation from.
+		 * 
+		 * @return Largest possible operable data size.
+		 **/
+	static size_t getAvailableSize(int64_t data_length, int64_t data_offset);
+
+		/**
+		 * @brief Get size of writeable data for an IO class, given the data length, desired read offset and count.
+		 * 
+		 * @param[in] data_length Total length of data.
+		 * @param[in] data_offset Byte offset in data to begin reading from.
+		 * @param[in] requested_read_count Number of bytes to read.
+		 * 
+		 * @return Largest possible readable count.
+		 **/
+	static size_t getReadableCount(int64_t data_length, int64_t data_offset, size_t requested_read_count);
+
+		/**
+		 * @brief Get size of writeable data for an IO class, given the data length, desired write offset and count.
+		 * 
+		 * @param[in] data_length Total length of data.
+		 * @param[in] data_offset Byte offset in data to begin writing from.
+		 * @param[in] requested_write_count Number of bytes to write.
+		 * 
+		 * @return Largest possible writeable count.
+		 **/
+	static size_t getWritableCount(int64_t data_length, int64_t data_offset, size_t requested_write_count);
+};
+
+}} // namespace tc::io