二进制字节数组和16进制字符串相互转换

二进制字节数组和16进制字符串相互转换

TBytes（二进制字节数组）要持久化到文件或数据库之前，要转换为16进制字符串。

DELPHI提供了一组函数。

uses classes

procedure BinToHex(Buffer: PAnsiChar; Text: PWideChar; BufSize: Integer); overload;
procedure BinToHex(Buffer: PAnsiChar; Text: PAnsiChar; BufSize: Integer); overload;
procedure BinToHex(var Buffer; Text: PWideChar; BufSize: Integer); overload; inline;
procedure BinToHex(var Buffer; Text: PAnsiChar; BufSize: Integer); overload; inline;
procedure BinToHex(Buffer: Pointer; Text: PWideChar; BufSize: Integer); overload; inline;
procedure BinToHex(Buffer: Pointer; Text: PAnsiChar; BufSize: Integer); overload; inline;

function HexToBin(Text: PWideChar; Buffer: PAnsiChar; BufSize: Integer): Integer; overload;
function HexToBin(Text: PAnsiChar; Buffer: PAnsiChar; BufSize: Integer): Integer; overload;
function HexToBin(Text: PWideChar; var Buffer; BufSize: Integer): Integer; overload; inline;
function HexToBin(Text: PAnsiChar; var Buffer; BufSize: Integer): Integer; overload; inline;
function HexToBin(Text: PWideChar; Buffer: Pointer; BufSize: Integer): Integer; overload; inline;
function HexToBin(Text: PAnsiChar; Buffer: Pointer; BufSize: Integer): Integer; overload; inline;

　　

procedure BinToHex(const Buffer: TBytes; BufOffset: Integer;
  var Text: TBytes; TextOffset: Integer; Count: Integer); overload;

function HexToBin(const Text: PChar; TextOffset: Integer;
  var Buffer: TBytes; BufOffset: Integer; Count: Integer): Integer; overload;

function HexToBin(const Text: TBytes; TextOffset: Integer;
  var Buffer: TBytes; BufOffset: Integer; Count: Integer): Integer; overload;