added data_streamer methods

libscio.hpp

@@ -12,6 +12,7 @@
 #include <iostream>
 #include <streambuf>
 #include <cstdio>
+#include <cstdint>
 
 namespace sc {
 
@@ -44,6 +45,109 @@ namespace sc {
 
         };
 
+        class fdstream : public fdostream, public fdistream {
+
+        };
+
+        class socketstream : public fdstream {
+
+        };
+
+        class meminbuf : public std::streambuf {
+
+        };
+
+        class memistream : public std::istream {
+
+        };
+
+        class memoutbuf : public std::streambuf {
+
+        };
+
+        class memostream : public std::ostream {
+
+        };
+
+        class memstream : public memostream, public memistream {
+
+        };
+
+        enum class byte_order {
+            undefined,
+            little_endian,
+            big_endian
+        };
+
+        class data_streamer {
+            public:
+                static byte_order cur_byte_order();
+                static inline void byte_swap(void* val, size_t n) {
+                    char* p = reinterpret_cast<char*>(val);
+                    for (size_t i = 0; i < n / 2; ++i) {
+                        std::swap(p[i], p[n - 1 - i]);
+                    }
+                }
+
+                data_streamer() = default;
+
+                byte_order target_byte_order() const { return _target_byte_order; }
+                void target_byte_order(byte_order new_byte_order) { _target_byte_order = new_byte_order; }
+
+                std::string get4chars(std::istream& file) const;
+
+                uint8_t getui8(std::istream& file) const;
+                int8_t getsi8(std::istream& file) const;
+                uin16_t getui16(std::istream& file) const;
+                int16_t getsi16(std::istream& file) const;
+                uint32_t getui24(std::istream& file) const;
+                int32_t getsi24(std::istream& file) const;
+                uint32_t getui32(std::istream& file) const;
+                int32_t getsi32(std::istream& file) const;
+                uint64_t getui64(std::istream& file) const;
+                int64_t getsi64(std::istream& file) const;
+
+                float getf32(std::istream& file) const;
+                double getf64(std::istream& file) const;
+                double getf80(std::istream& file) const;
+
+                void put4chars(const std::string& s, ostream& file) const;
+
+                void putui8(uint8_t val, std::ostream& file) const;
+                void putsi8(int8_t val, std::ostream& file) const;
+                void putui16(uint16_t val, std::ostream& file) const;
+                void putsi16(int16_t val, std::ostream& file) const;
+                void putui24(uint32_t val, std::ostream& file) const;
+                void putsi24(int32_t val, std::ostream& file) const;
+                void putui32(uint32_t val, std::ostream& file) const;
+                void putsi32(int32_t val, std::ostream& file) const;
+                void putui64(uint64_t val, std::ostream& file) const;
+                void putsi64(int64_t val, std::ostream& file) const;
+
+                void putf32(float val, std::ostream& file) const;
+                void putf64(double val, std::ostream& file) const;
+                void putf80(double val, std::ostream& file) const;
+
+            private:
+                byte_order _target_byte_order {cur_byte_order()};
+        };
+
+        class byte_order_changer {
+            public:
+                byte_order_changer(const data_streamer* ds, byte_order order);
+                ~byte_order_changer();
+
+                byte_order_changer(byte_order_changer&& other);
+                byte_order_changer& operator=(byte_order_changer&& other);
+
+                byte_order_changer(const byte_order_changer&) = delete;
+                byte_order_changer& operator=(const byte_order_changer&) = delete;
+
+            private:
+                data_streamer* _data_streamer {nullptr};
+                byte_order _saved_byte_order {byte_order::undefined};
+        };
+
 	}
 
 }