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n := n + m * Number (b);
m := m * 256;
end loop;
end Read_Intel_x86_number;
procedure Read_Double (
sb : in out GL.IO.Input_buffer;
n : out GL.Double
) is
procedure Read_Intel is new Read_Intel_x86_number (U16);
procedure Read_Intel is new Read_Intel_x86_number (U32);
m1, m2 : U32; e : U16;
begin
Read_Intel (sb, m1);
Read_Intel (sb, m2);
Read_Intel (sb, e);
Merge (Cvt (m1), Cvt (m2), Cvt (e), n);
-- Double is stored in two parts due to the absence of
-- 64 - bit integers on certain compilers (e.g. OA 8.2)
end Read_Double;
generic
s : Ada.Streams.Stream_IO.Stream_Access;
type Number is mod <>;
procedure Write_Intel_x86_number (n : in Number);
procedure Write_Intel_x86_number (n : in Number) is
m : Number := n;
bytes : constant Integer := Number'Size/8;
begin
for i in 1 .. bytes loop
U8'Write (s, U8 (m mod 256));
m := m / 256;
end loop;
end Write_Intel_x86_number;
procedure Write_Double (
s : Ada.Streams.Stream_IO.Stream_Access;
n : in GL.Double)
is
procedure Write_Intel is new Write_Intel_x86_number (s, U16);
procedure Write_Intel is new Write_Intel_x86_number (s, U32);
m1, m2 : I32; e : I16;
begin
Split (n, m1, m2, e);
-- Double is stored in two parts due to the absence of
-- 64 - bit integers on certain compilers (e.g. OA 8.2)
Write_Intel (Cvt (m1));
Write_Intel (Cvt (m2));
Write_Intel (Cvt (e));
end Write_Double;
procedure Write_String (
s : in Ada.Streams.Stream_IO.Stream_Access;
str : in String
)
is
tstr : constant String := Trim (str, Right);
begin
U8'Write (s, tstr'Length);
String'Write (s, tstr);
end Write_String;
procedure Read_String (
sb : in out GL.IO.Input_buffer;
str : out String
)
is
l8 : U8;
l : Natural;
begin
GL.IO.Get_Byte (sb, l8);
l := Natural (l8);
if l > str'Length then
raise Constraint_Error;
end if;
for i in str'First .. str'First + l - 1 loop
GL.IO.Get_Byte (sb, l8);
str (i) := Character'Val (l8);
end loop;
str (str'First + l .. str'Last) := (others => ' ');
end Read_String;
-------------------
-- Object_3D I/O --
-------------------
procedure Read (
s : in Ada.Streams.Stream_IO.Stream_Access;
o : out p_Object_3D
)
is
buf : GL.IO.Input_buffer;
procedure Read_Intel is new Read_Intel_x86_number (U16);
procedure Read_Intel is new Read_Intel_x86_number (U32);
procedure Read_Float (n : out GL.C_Float) is
m : U32; e : U16;