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