medfall

commit 0ed5d6492171c6d53401729b830405be84b42a33
parent 66f7dec877e52d4ccfd035da8ea62964ff5fd1a0
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Sun Mar  6 21:13:44 +0000

Add stream.h

Diffstat:
stream.h
 | 
56
++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+), 0 deletions(-)
diff --git a/stream.h b/stream.h
@@ -0,0 +1,56 @@
+#ifndef _STREAM_H_
+#define _STREAM_H_
+
+#include "endian.h"
+
+struct Stream {
+	char * ptr;
+};
+
+#ifdef IS_LITTLE_ENDIAN
+#define DEF_TYPE( type ) \
+	inline Stream read_##type( Stream stream, type * v ) { \
+		*v = *( type * ) stream.ptr; \
+		stream.ptr += sizeof( type ); \
+		return stream; \
+	} \
+	inline Stream write_##type( Stream stream, const type * v ) { \
+		*( type * ) stream.ptr = *v; \
+		stream.ptr += sizeof( type ); \
+		return stream; \
+	}
+#else
+#define DEF_TYPE( type ) \
+	inline Stream read_##type( Stream stream, type * v ) { \
+		char swapped[ sizeof( type ) ]; \
+		for( int i = 0; i < sizeof( type ); i++ ) { \
+			swapped[ i ] = stream.ptr[ sizeof( swapped ) - 1 - i ]; \
+		} \
+		*v = *( type * ) swapped; \
+		stream.ptr += sizeof( type ); \
+		return stream; \
+	} \
+	inline Stream write_##type( Stream stream, const type * v ) { \
+		char * v_as_string = ( char * ) v; \
+		for( int i = 0; i < sizeof( type ); i++ ) { \
+			stream.ptr[ i ] = v_as_string[ sizeof( type ) - 1 - i ]; \
+		} \
+		stream.ptr += sizeof( type ); \
+		return stream; \
+	}
+#endif
+
+DEF_TYPE( u8 )
+DEF_TYPE( u16 )
+DEF_TYPE( u32 )
+DEF_TYPE( u64 )
+DEF_TYPE( s8 )
+DEF_TYPE( s16 )
+DEF_TYPE( s32 )
+DEF_TYPE( s64 )
+DEF_TYPE( f32 )
+DEF_TYPE( f64 )
+
+#undef DEF_TYPE
+
+#endif // _STREAM_H_