Code4bin Delphi -

Let’s create a realistic Code4Bin.pas unit that you can drop into any Delphi project (10.3+ or modern Community Edition).

unit Code4Bin;
interface
uses
System.Classes, System.SysUtils;
type
TBinaryReaderHelper = class helper for TStream
private
function ReadByte: Byte; inline;
function ReadWord: Word; inline;
function ReadDWord: Cardinal; inline;
public
function ReadInt8: ShortInt;
function ReadUInt8: Byte;
function ReadInt32: Integer;
function ReadStringRaw(Length: Integer): string;
end;
TBinaryWriterHelper = class helper for TStream
public
procedure WriteInt32(Value: Integer);
procedure WriteStringRaw(const Value: string);
end;
implementation
 TBinaryReaderHelper 
function TBinaryReaderHelper.ReadByte: Byte;
begin
Self.Read(Result, 1);
end;
function TBinaryReaderHelper.ReadInt32: Integer;
begin
Self.Read(Result, 4);
end; code4bin delphi
function TBinaryReaderHelper.ReadStringRaw(Length: Integer): string;
var
Bytes: TBytes;
begin
SetLength(Bytes, Length);
Self.Read(Bytes[0], Length);
Result := TEncoding.ASCII.GetString(Bytes);
end;
 TBinaryWriterHelper 
procedure TBinaryWriterHelper.WriteInt32(Value: Integer);
begin
Self.Write(Value, 4);
end;
procedure TBinaryWriterHelper.WriteStringRaw(const Value: string);
var
Bytes: TBytes;
begin
Bytes := TEncoding.ASCII.GetBytes(Value);
Self.Write(Bytes[0], Length(Bytes));
end;
end.

This unit embodies the Code4Bin Delphi spirit: lightweight, type-safe, and directly mapped to binary I/O.

Let us build a production-ready binary microservice: Let’s create a realistic Code4Bin

Step 1: Install Delphi Community Edition or Lazarus (Free Pascal).

Step 2: Create a new Console Application.

Step 3: Write a simple JSON API listener (using TNetHTTPClient or Indy).

Step 4: Compile with these directives:

$OPTIMIZATION ON
$STACKFRAMES OFF
$MINENUMSIZE 1
$LONGSTRINGS OFF // Use PChar for C interop

Step 5: Analyze the binary size using dumpbin /headers MyApp.exe. A well-optimized Code4Bin Delphi app should be under 500KB for basic logic.

Delphi records can be read/written directly to streams if they are packed and contain only value types.

type
  THeader = packed record
    Signature: array[0..3] of AnsiChar;  // 'C4B'
    Version: Byte;
    DataSize: Cardinal;
  end;
procedure ReadHeader(Stream: TStream; var Header: THeader);
begin
Stream.Read(Header, SizeOf(Header));
end;

This is quintessential Code4Bin – moving structural code directly to binary.

Parsing a 10MB XML file requires heavy string manipulation. Parsing a 10MB binary stream using TMemoryStream and pointer casting is near-instantaneous. For real-time systems (finance, telecom), Code4Bin is non-negotiable.

Verdict: A Simple, Effective Solution for Binary Data Management

For Delphi developers, dealing with binary data—whether it’s editing hex values, viewing file structures, or encoding data for web transfer—often requires jumping between external tools like HxD or online converters. Code4Bin aims to solve this by bringing robust binary manipulation directly into the IDE or your VCL/FMX applications.

Here is a breakdown of why Code4Bin is a noteworthy addition to a Delphi developer's toolkit.

Scenario: You’re writing a Delphi app that talks to an embedded device using a custom binary protocol.

Without Code4Bin → manual Move(), pointer arithmetic, and hard-to-read code.

With Code4Bin:

With the release of Delphi 12 (and upcoming versions), the RTL has improved anonymous methods and generics, making binary coding even more elegant. The Code4Bin pattern is being adopted by the Delphi DevOps community for:

Moreover, the trend toward "zero-copy" deserialization (popularized by Rust and C# Span<T>) is influencing Delphi through the new System.Memory library. Expect Code4Bin to evolve into System.BinaryCodec in future Delphi editions.