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This page displays 4 requested snippets.

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TryHexToBytes

Writes the bytes represented by a hexadecimal string into a byte array. Returns True on success or False if HexStr is either empty or contains invalid hex characters.

function TryHexToBytes(HexStr: string; out Bytes: TBytes): Boolean;
begin
  SetLength(Bytes, HexByteSize(HexStr));
  Result := TryHexToBuf(HexStr, Bytes[0]);
end;

Kind of Snippet: Routine

Required units: None.

Required snippets: HexByteSize, TBytes, TryHexToBuf, [Show All].

See also: HexToBytes, TryHexToBuf, TryHexToInt, TryHexToInt64, [Show All].

Supported Compilers:

D2	D3	D4	D5	D6	D7	D2005 (Win32)	D2006 (Win32)	D2007	D2009 (Win32)	D2010 (Win32)	Free Pascal

This snippet cannot be included in generated units.

HexToBuf

Writes the bytes represented by a hexadecimal string into a buffer, which must be large enough to receive the data.

procedure HexToBuf(HexStr: string; var Buf);
{$IFDEF FPC}
const
{$ELSE}
resourcestring
{$ENDIF}
  sHexConvertError = '''%s'' is not a valid hexadecimal string';
begin
  if not TryHexToBuf(HexStr, Buf) then
    raise SysUtils.EConvertError.CreateFmt(sHexConvertError, [HexStr]);
end;

Kind of Snippet: Routine

Required units: None.

Required snippets: TryHexToBuf.

See also: TryHexToBuf, HexToBytes, HexToInt, HexToInt64, [Show All].

Supported Compilers:

D2	D3	D4	D5	D6	D7	D2005 (Win32)	D2006 (Win32)	D2007	D2009 (Win32)	D2010 (Win32)	Free Pascal

HexToInt

Converts a hexadecimal string to an integer. Raises an exception if the string is not valid hexadecimal.

function HexToInt(const HexStr: string): Integer;
{$IFDEF FPC}
const
{$ELSE}
resourcestring
{$ENDIF}
  sHexConvertError = '''%s'' is not a valid hexadecimal value';
begin
  if not TryHexToInt(HexStr, Result) then
    raise SysUtils.EConvertError.CreateFmt(sHexConvertError, [HexStr]);
end;

Kind of Snippet: Routine

Required units: None.

Required snippets: TryHexToInt.

See also: TryHexToInt, HexToIntDef, HexToBuf, HexToBytes, HexToInt64, [Show All].

Supported Compilers:

D2	D3	D4	D5	D6	D7	D2005 (Win32)	D2006 (Win32)	D2007	D2009 (Win32)	D2010 (Win32)	Free Pascal

HexToInt64

Converts a hexadecimal string to a 64 bit integer. Raises an exception if the string is not valid hexadecimal.

function HexToInt64(const HexStr: string): Int64;
{$IFDEF FPC}
const
{$ELSE}
resourcestring
{$ENDIF}
  sHexConvertError = '''%s'' is not a valid hexadecimal value';
begin
  if not TryHexToInt64(HexStr, Result) then
    raise SysUtils.EConvertError.CreateFmt(sHexConvertError, [HexStr]);
end;

Kind of Snippet: Routine

Required units: None.

Required snippets: TryHexToInt64.

See also: TryHexToInt64, HexToInt64Def, HexToBuf, HexToBytes, HexToInt, [Show All].

Supported Compilers:

D2	D3	D4	D5	D6	D7	D2005 (Win32)	D2006 (Win32)	D2007	D2009 (Win32)	D2010 (Win32)	Free Pascal