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{
This file is part of the Free Pascal run time library.
A file in Amiga system run time library.
Copyright (c) 2000-2003 by Nils Sjoholm
member of the Amiga RTL development team.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
{
History:
Added the define use_amiga_smartlink.
13 Jan 2003.
nils.sjoholm@mailbox.swipnet.se Nils Sjoholm
}
{$I useamigasmartlink.inc}
{$ifdef use_amiga_smartlink}
{$smartlink on}
{$endif use_amiga_smartlink}
unit PasToC;
interface
function Pas2C( s : String): PChar;
implementation
const
MEMF_ANY = %000000000000000000000000; { * Any type of memory will do * }
MEMF_PUBLIC = %000000000000000000000001;
MEMF_CLEAR = %000000010000000000000000;
Type
ULONG = Longint;
pRemember = ^tRemember;
tRemember = record
NextRemember : pRemember;
RememberSize : ULONG;
Memory : Pointer;
end;
var
myrememberkey : pRemember;
remember_exit : pointer;
FUNCTION fpcAllocRemember(VAR rememberKey : pRemember; size : ULONG; flags : ULONG) : POINTER;
BEGIN
ASM
MOVE.L A6,-(A7)
MOVEA.L rememberKey,A0
MOVE.L size,D0
MOVE.L flags,D1
MOVEA.L _IntuitionBase,A6
JSR -396(A6)
MOVEA.L (A7)+,A6
MOVE.L D0,@RESULT
END;
END;
PROCEDURE fpcFreeRemember(VAR rememberKey : pRemember; reallyForget : LONGINT);
BEGIN
ASM
MOVE.L A6,-(A7)
MOVEA.L rememberKey,A0
MOVE.L reallyForget,D0
MOVEA.L _IntuitionBase,A6
JSR -408(A6)
MOVEA.L (A7)+,A6
END;
END;
Function StringPcharCopy(Dest: PChar; Source: String):PChar;
var
counter : byte;
Begin
counter := 0;
{ if empty pascal string }
{ then setup and exit now }
if Source = '' then
Begin
Dest[0] := #0;
StringPCharCopy := Dest;
exit;
end;
for counter:=1 to length(Source) do
begin
Dest[counter-1] := Source[counter];
end;
{ terminate the string }
Dest[counter] := #0;
StringPcharCopy:=Dest;
end;
function Pas2C(s : string): PChar;
var
themem : Pointer;
begin
themem := fpcAllocRemember(myrememberkey,length(s)+1, MEMF_CLEAR or MEMF_PUBLIC);
if themem = nil then begin
writeln('Can''t allocate memory for string');
halt(20);
end else begin
StringPCharCopy(themem,s);
Pas2C := themem;
end;
end;
procedure ReleasePasToC;
begin
ExitProc := remember_exit;
fpcFreeRemember(myrememberkey,1);
end;
begin
myrememberkey := nil;
remember_exit := ExitProc;
ExitProc := @ReleasePasToC;
end.
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