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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Stream.Output;
interface
uses
FloatingPoint._32,
FloatingPoint._64,
Integer._16.Positive,
Integer._32.Positive,
Integer._64.Positive,
Integer._8.Positive;
type
TOutputStream = class(TObject)
private
class var
Zeros: array [0..1023] of TPositiveInteger8;
public
procedure Write(const Buffer; Count: TPositiveInteger32); virtual; abstract;
procedure WriteZeros(Count: TPositiveInteger32); virtual;
procedure Flush(); virtual;
procedure WriteLittleEndian8(const Value: TPositiveInteger8);
procedure WriteLittleEndian16(const Value: TPositiveInteger16);
procedure WriteLittleEndian24(const Value: TPositiveInteger32);
procedure WriteLittleEndian32(const Value: TPositiveInteger32);
procedure WriteLittleEndian64(const Value: TPositiveInteger64);
procedure WriteLittleEndianFloatingPoint32(const Value: TFloatingPoint32);
procedure WriteLittleEndianFloatingPoint64(const Value: TFloatingPoint64);
procedure WriteBigEndian8(const Value: TPositiveInteger8);
procedure WriteBigEndian16(const Value: TPositiveInteger16);
procedure WriteBigEndian24(const Value: TPositiveInteger32);
procedure WriteBigEndian32(const Value: TPositiveInteger32);
procedure WriteBigEndian64(const Value: TPositiveInteger64);
procedure WriteBigEndianFloatingPoint32(const Value: TFloatingPoint32);
procedure WriteBigEndianFloatingPoint64(const Value: TFloatingPoint64);
public
class constructor Create();
end;
implementation
uses
Byte,
Mathematics;
{ TOutputStream }
class constructor TOutputStream.Create();
begin
FillChar(Zeros, Length(Zeros), #0);
end;
procedure TOutputStream.Flush();
begin
end;
procedure TOutputStream.WriteBigEndian16(const Value: TPositiveInteger16);
var
Bytes: array [0..1] of TByte;
begin
Bytes[0] := (Value and $FF00) shr 8;
Bytes[1] := (Value and $00FF) shr 0;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteBigEndian24(const Value: TPositiveInteger32);
var
Bytes: array [0..2] of TByte;
begin
Bytes[0] := (Value and $00FF0000) shr 16;
Bytes[1] := (Value and $0000FF00) shr 8;
Bytes[2] := (Value and $000000FF) shr 0;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteBigEndian32(const Value: TPositiveInteger32);
var
Bytes: array [0..3] of TByte;
begin
Bytes[0] := (Value and $FF000000) shr 24;
Bytes[1] := (Value and $00FF0000) shr 16;
Bytes[2] := (Value and $0000FF00) shr 8;
Bytes[3] := (Value and $000000FF) shr 0;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteBigEndian64(const Value: TPositiveInteger64);
var
Bytes: array [0..7] of TByte;
begin
Bytes[0] := (Value and $FF00000000000000) shr 56;
Bytes[1] := (Value and $00FF000000000000) shr 48;
Bytes[2] := (Value and $0000FF0000000000) shr 40;
Bytes[3] := (Value and $000000FF00000000) shr 32;
Bytes[4] := (Value and $00000000FF000000) shr 24;
Bytes[5] := (Value and $0000000000FF0000) shr 16;
Bytes[6] := (Value and $000000000000FF00) shr 8;
Bytes[7] := (Value and $00000000000000FF) shr 0;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteBigEndian8(const Value: TPositiveInteger8);
begin
Write(Value, SizeOf(Value));
end;
procedure TOutputStream.WriteBigEndianFloatingPoint32(const Value: TFloatingPoint32);
type
TFloatingPoint32Bytes = array [0..3] of TByte;
begin
WriteBigEndian32(TPositiveInteger32(TFloatingPoint32Bytes(Value)));
end;
procedure TOutputStream.WriteBigEndianFloatingPoint64(const Value: TFloatingPoint64);
type
TFloatingPoint64Bytes = array [0..7] of TByte;
begin
WriteBigEndian64(TPositiveInteger64(TFloatingPoint64Bytes(Value)));
end;
procedure TOutputStream.WriteLittleEndian16(const Value: TPositiveInteger16);
var
Bytes: array [0..1] of TByte;
begin
Bytes[0] := (Value and $00FF) shr 0;
Bytes[1] := (Value and $FF00) shr 8;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteLittleEndian24(const Value: TPositiveInteger32);
var
Bytes: array [0..2] of TByte;
begin
Bytes[0] := (Value and $0000FF) shr 0;
Bytes[1] := (Value and $00FF00) shr 8;
Bytes[2] := (Value and $FF0000) shr 16;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteLittleEndian32(const Value: TPositiveInteger32);
var
Bytes: array [0..3] of TByte;
begin
Bytes[0] := (Value and $000000FF) shr 0;
Bytes[1] := (Value and $0000FF00) shr 8;
Bytes[2] := (Value and $00FF0000) shr 16;
Bytes[3] := (Value and $FF000000) shr 24;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteLittleEndian64(const Value: TPositiveInteger64);
var
Bytes: array [0..7] of TByte;
begin
Bytes[0] := (Value and $00000000000000FF) shr 0;
Bytes[1] := (Value and $000000000000FF00) shr 8;
Bytes[2] := (Value and $0000000000FF0000) shr 16;
Bytes[3] := (Value and $00000000FF000000) shr 24;
Bytes[4] := (Value and $000000FF00000000) shr 32;
Bytes[5] := (Value and $0000FF0000000000) shr 40;
Bytes[6] := (Value and $00FF000000000000) shr 48;
Bytes[7] := (Value and $FF00000000000000) shr 56;
Write(Bytes, Length(Bytes));
end;
procedure TOutputStream.WriteLittleEndian8(const Value: TPositiveInteger8);
begin
Write(Value, SizeOf(Value));
end;
procedure TOutputStream.WriteLittleEndianFloatingPoint32(const Value: TFloatingPoint32);
type
TFloatingPoint32Bytes = array [0..3] of TByte;
begin
WriteLittleEndian32(TPositiveInteger32(TFloatingPoint32Bytes(Value)));
end;
procedure TOutputStream.WriteLittleEndianFloatingPoint64(const Value: TFloatingPoint64);
type
TFloatingPoint64Bytes = array [0..7] of TByte;
begin
WriteLittleEndian64(TPositiveInteger64(TFloatingPoint64Bytes(Value)));
end;
procedure TOutputStream.WriteZeros(Count: TPositiveInteger32);
var
ToWriteCount: TPositiveInteger32;
begin
while Count > 0 do
begin
ToWriteCount := Minimum(Count, Length(Zeros));
Write(Zeros[0], ToWriteCount);
Dec(Count, ToWriteCount);
end;
end;
end.
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