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{
This file is part of the Free Pascal Run time library.
Copyright (c) 1999-2000 by the Free Pascal 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.
**********************************************************************}
{****************************************************************************
subroutines for typed file handling
****************************************************************************}
Procedure Assign(out f:TypedFile;const Name:string);
{
Assign Name to file f so it can be used with the file routines
}
Begin
FillChar(f,SizeOF(FileRec),0);
FileRec(f).Handle:=UnusedHandle;
FileRec(f).mode:=fmClosed;
Move(Name[1],FileRec(f).Name,Length(Name));
End;
Procedure Assign(out f:TypedFile;p:pchar);
{
Assign Name to file f so it can be used with the file routines
}
begin
Assign(f,StrPas(p));
end;
Procedure Assign(out f:TypedFile;c:char);
{
Assign Name to file f so it can be used with the file routines
}
begin
Assign(f,string(c));
end;
Procedure fpc_reset_typed(var f : TypedFile;Size : Longint);[Public,IOCheck, Alias:'FPC_RESET_TYPED']; compilerproc;
Begin
If InOutRes <> 0 then
exit;
Reset(UnTypedFile(f),Size);
End;
Procedure fpc_rewrite_typed(var f : TypedFile;Size : Longint);[Public,IOCheck, Alias:'FPC_REWRITE_TYPED']; compilerproc;
Begin
If InOutRes <> 0 then
exit;
Rewrite(UnTypedFile(f),Size);
End;
{ this code is duplicated in the iso7185 unit }
Procedure DoAssign(var t : TypedFile);
Begin
Assign(t,'fpc_'+HexStr(random(1000000000),8)+'.tmp');
End;
Procedure fpc_reset_typed_iso(var f : TypedFile;Size : Longint);[Public,IOCheck, Alias:'FPC_RESET_TYPED_ISO']; compilerproc;
Begin
If InOutRes <> 0 then
exit;
{ create file name? }
if FileRec(f).mode=0 then
DoAssign(f);
Reset(UnTypedFile(f),Size);
End;
Procedure fpc_rewrite_typed_iso(var f : TypedFile;Size : Longint);[Public,IOCheck, Alias:'FPC_REWRITE_TYPED_ISO']; compilerproc;
Begin
If InOutRes <> 0 then
exit;
{ create file name? }
if FileRec(f).mode=0 then
DoAssign(f);
Rewrite(UnTypedFile(f),Size);
End;
Procedure fpc_typed_write(TypeSize : Longint;var f : TypedFile;const Buf);[IOCheck, Public, Alias :'FPC_TYPED_WRITE']; compilerproc;
Begin
If InOutRes <> 0 then
exit;
case fileRec(f).mode of
fmOutPut,fmInOut:
Do_Write(FileRec(f).Handle,@Buf,TypeSize);
fmInput: inOutRes := 105;
else inOutRes := 103;
end;
End;
Procedure fpc_typed_read(TypeSize : Longint;var f : TypedFile;out Buf);[IOCheck, Public, Alias :'FPC_TYPED_READ']; compilerproc;
var
Result : Longint;
Begin
If InOutRes <> 0 then
exit;
case FileRec(f).mode of
fmInput,fmInOut:
begin
Result:=Do_Read(FileRec(f).Handle,@Buf,TypeSize);
If Result<TypeSize Then
InOutRes:=100
end;
fmOutPut: inOutRes := 104
else inOutRes := 103;
end;
End;
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