fpc/api/win32/filectrl.inc
2000-01-06 01:20:30 +00:00

181 lines
3.9 KiB
PHP

{
$Id$
System independent low-level file interface for Win32
Copyright (c) 1999 by Florian Klaempfl
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
}
uses
Windows;
function OpenFileStr(FName: PChar; Flags: Longint): TFileHandle;
begin
SetLastError(0);
OpenFileStr :=
Windows.CreateFile(FName,
GENERIC_READ OR GENERIC_WRITE,
FILE_SHARE_READ OR FILE_SHARE_WRITE,
nil,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
0);
ErrorCode := GetLastError;
end; { func. OpenFileStr }
function CreateFileStr(FName: PChar): TFileHandle;
begin
SetLastError(0);
CreateFileStr :=
Windows.CreateFile(FName,
GENERIC_READ OR GENERIC_WRITE,
FILE_SHARE_READ OR FILE_SHARE_WRITE,
nil,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
0);
ErrorCode := GetLastError;
end;
procedure DeleteFileStr(FName: PChar);
begin
ErrorCode:=0;
if NOT Windows.DeleteFile(FName) then
ErrorCode:=GetLastError;
end;
procedure CloseFile(Handle: TFileHandle);
begin
ErrorCode:=0;
if NOT CloseHandle(Handle) then
ErrorCode:=GetLastError;
end;
function SeekFile(Handle: TFileHandle; Pos: TFileInt; SeekType: Word): TFileInt;
var tmp: longint;
begin
ErrorCode:=0;
Tmp := SetFilePointer(Handle, Pos, nil, SeekType);
if tmp =$ffffffff then
begin
ErrorCode:=GetLastError;
SeekFile := 0
end
else SeekFile := tmp;
end;
function ReadFile(Handle: TFileHandle; var Buff; Count: CPUWord): CPUWord;
var
Result : CPUWord;
begin
ErrorCode:=0;
if Windows.ReadFile(Handle, @Buff, Count, Result, nil) then
ErrorCode:=GetLastError;
ReadFile:=result;
end;
function WriteFile(Handle: TFileHandle; var Buff; Count: CPUWord): CPUWord;
var
Written : CPUWord;
Size: Longint;
begin
ErrorCode:=0;
if Windows.WriteFile(Handle, @Buff, Count, Size, nil) then
ErrorCode:=GetLastError;
WriteFile:=Written;
end;
procedure FlushFile(Handle: TFileHandle);
begin
ErrorCode:=0;
if FlushFileBuffers(Handle) then
ErrorCode:=GetLastError;
end;
procedure TruncateFile(Handle: TFileHandle);
begin
ErrorCode:=0;
SeekFile(Handle, 0, skEnd);
if not(SetEndOfFile(Handle)) then
ErrorCode:=GetLastError;
end;
function EndOfFile(Handle: TFileHandle): Boolean;
begin
ErrorCode:=0;
EndOfFile := FilePos(Handle) >= FileSize(Handle);
end;
function FilePos(Handle: TFileHandle): TFileInt;
var
l : TFileInt;
begin
ErrorCode:=0;
l:=SetFilePointer(Handle, 0, nil, FILE_CURRENT);
if l=-1 then
begin
l:=0;
ErrorCode:=GetLastError;
end;
FilePos:=l;
end;
function FileSize(Handle: TFileHandle): TFileInt;
var
aktfilepos : TFileInt;
begin
SetLastError(0);
AktFilePos := FilePos(Handle);
FileSize := SeekFile(Handle, 0, skEnd);
SeekFile(Handle, aktfilepos, skBeg);
end;
{
$Log$
Revision 1.1 2000-01-06 01:20:31 peter
* moved out of packages/ back to topdir
Revision 1.1 1999/11/24 23:36:38 peter
* moved to packages dir
Revision 1.2 1999/06/21 16:43:52 peter
* win32 updates from Maarten Bekkers
Revision 1.1 1999/01/08 14:37:03 florian
+ initial version, not working yet
}