mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 16:59:45 +01:00
820 lines
19 KiB
ObjectPascal
820 lines
19 KiB
ObjectPascal
{
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$Id$
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Florian Klaempfl
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member of the Free Pascal development team
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Sysutils unit for OS/2
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program 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.
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**********************************************************************}
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unit sysutils;
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interface
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{$MODE objfpc}
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{ force ansistrings }
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{$H+}
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uses
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doscalls,dos;
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{ Include platform independent interface part }
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{$i sysutilh.inc}
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implementation
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{ Include platform independent implementation part }
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{$i sysutils.inc}
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{****************************************************************************
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File Functions
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****************************************************************************}
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{This is the correct way to call external assembler procedures.}
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procedure syscall;external name '___SYSCALL';
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const
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ofRead = $0000; {Open for reading}
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ofWrite = $0001; {Open for writing}
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ofReadWrite = $0002; {Open for reading/writing}
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doDenyRW = $0010; {DenyAll (no sharing)}
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faCreateNew = $00010000; {Create if file does not exist}
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faOpenReplace = $00040000; {Truncate if file exists}
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faCreate = $00050000; {Create if file does not exist, truncate otherwise}
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{$ASMMODE INTEL}
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function FileOpen (const FileName: string; Mode: integer): longint;
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{$IFOPT H+}
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assembler;
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{$ELSE}
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var FN: string;
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begin
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FN := FileName + #0;
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{$ENDIF}
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asm
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mov eax, Mode
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(* DenyAll if sharing not specified. *)
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test eax, 112
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jnz @FOpen1
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or eax, 16
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@FOpen1:
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mov ecx, eax
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mov eax, 7F2Bh
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{$IFOPT H+}
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mov edx, FileName
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{$ELSE}
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lea edx, FN
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inc edx
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{$ENDIF}
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call syscall
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{$IFOPT H-}
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mov [ebp - 4], eax
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end;
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{$ENDIF}
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end;
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function FileCreate (const FileName: string): longint;
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{$IFOPT H+}
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assembler;
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{$ELSE}
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var FN: string;
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begin
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FN := FileName + #0;
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{$ENDIF}
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asm
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mov eax, 7F2Bh
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mov ecx, ofReadWrite or faCreate or doDenyRW (* Sharing to DenyAll *)
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{$IFOPT H+}
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mov edx, FileName
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{$ELSE}
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lea edx, FN
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inc edx
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{$ENDIF}
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call syscall
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{$IFOPT H-}
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mov [ebp - 4], eax
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end;
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{$ENDIF}
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end;
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function FileRead (Handle: longint; var Buffer; Count: longint): longint;
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assembler;
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asm
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mov eax, 3F00h
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mov ebx, Handle
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mov ecx, Count
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mov edx, Buffer
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call syscall
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jnc @FReadEnd
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mov eax, -1
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@FReadEnd:
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end;
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function FileWrite (Handle: longint; const Buffer; Count: longint): longint;
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assembler;
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asm
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mov eax, 4000h
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mov ebx, Handle
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mov ecx, Count
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mov edx, Buffer
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call syscall
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jnc @FWriteEnd
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mov eax, -1
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@FWriteEnd:
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end;
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function FileSeek (Handle, FOffset, Origin: longint): longint; assembler;
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asm
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mov eax, Origin
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mov ah, 42h
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mov ebx, Handle
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mov edx, FOffset
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call syscall
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jnc @FSeekEnd
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mov eax, -1
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@FSeekEnd:
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end;
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procedure FileClose (Handle: longint);
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begin
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if (Handle <= 4) or (os_mode = osOS2) and (Handle <= 2) then
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asm
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mov eax, 3E00h
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mov ebx, Handle
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call syscall
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end;
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end;
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function FileTruncate (Handle, Size: longint): boolean; assembler;
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asm
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mov eax, 7F25h
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mov ebx, Handle
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mov edx, Size
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call syscall
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jc @FTruncEnd
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mov eax, 4202h
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mov ebx, Handle
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mov edx, 0
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call syscall
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mov eax, 0
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jnc @FTruncEnd
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dec eax
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@FTruncEnd:
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end;
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function FileAge (const FileName: string): longint;
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var Handle: longint;
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begin
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Handle := FileOpen (FileName, 0);
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if Handle <> -1 then
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begin
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Result := FileGetDate (Handle);
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FileClose (Handle);
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end
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else
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Result := -1;
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end;
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function FileExists (const FileName: string): boolean;
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{$IFOPT H+}
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assembler;
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{$ELSE}
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var FN: string;
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begin
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FN := FileName + #0;
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{$ENDIF}
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asm
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mov ax, 4300h
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{$IFOPT H+}
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mov edx, FileName
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{$ELSE}
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lea edx, FN
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inc edx
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{$ENDIF}
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call syscall
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mov eax, 0
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jc @FExistsEnd
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test cx, 18h
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jnz @FExistsEnd
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inc eax
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@FExistsEnd:
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{$IFOPT H-}
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end;
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{$ENDIF}
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end;
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type TRec = record
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T, D: word;
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end;
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PSearchRec = ^SearchRec;
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function FindFirst (const Path: string; Attr: longint; var Rslt: TSearchRec): longint;
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var SR: PSearchRec;
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FStat: PFileFindBuf3;
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Count: longint;
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Err: longint;
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begin
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if os_mode = osOS2 then
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begin
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New (FStat);
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Rslt.FindHandle := $FFFFFFFF;
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Count := 1;
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Err := DosFindFirst (Path, Rslt.FindHandle, Attr, FStat,
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SizeOf (FStat^), Count, ilStandard);
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if (Err = 0) and (Count = 0) then Err := 18;
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FindFirst := -Err;
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if Err = 0 then
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begin
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Rslt.Name := FStat^.Name;
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Rslt.Size := FStat^.FileSize;
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Rslt.Attr := FStat^.AttrFile;
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Rslt.ExcludeAttr := 0;
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TRec (Rslt.Time).T := FStat^.TimeLastWrite;
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TRec (Rslt.Time).D := FStat^.DateLastWrite;
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end;
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Dispose (FStat);
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end
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else
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begin
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GetMem (SR, SizeOf (SearchRec));
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Rslt.FindHandle := longint(SR);
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DOS.FindFirst (Path, Attr, SR^);
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FindFirst := -DosError;
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if DosError = 0 then
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begin
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Rslt.Time := SR^.Time;
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Rslt.Size := SR^.Size;
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Rslt.Attr := SR^.Attr;
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Rslt.ExcludeAttr := 0;
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Rslt.Name := SR^.Name;
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end;
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end;
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end;
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function FindNext (var Rslt: TSearchRec): longint;
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var SR: PSearchRec;
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FStat: PFileFindBuf3;
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Count: longint;
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Err: longint;
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begin
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if os_mode = osOS2 then
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begin
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New (FStat);
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Count := 1;
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Err := DosFindNext (Rslt.FindHandle, FStat, SizeOf (FStat), Count);
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if (Err = 0) and (Count = 0) then Err := 18;
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FindNext := -Err;
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if Err = 0 then
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begin
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Rslt.Name := FStat^.Name;
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Rslt.Size := FStat^.FileSize;
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Rslt.Attr := FStat^.AttrFile;
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Rslt.ExcludeAttr := 0;
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TRec (Rslt.Time).T := FStat^.TimeLastWrite;
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TRec (Rslt.Time).D := FStat^.DateLastWrite;
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end;
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Dispose (FStat);
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end
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else
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begin
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SR := PSearchRec (Rslt.FindHandle);
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if SR <> nil then
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begin
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DOS.FindNext (SR^);
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FindNext := -DosError;
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if DosError = 0 then
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begin
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Rslt.Time := SR^.Time;
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Rslt.Size := SR^.Size;
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Rslt.Attr := SR^.Attr;
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Rslt.ExcludeAttr := 0;
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Rslt.Name := SR^.Name;
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end;
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end;
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end;
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end;
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procedure FindClose (var F: TSearchrec);
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var SR: PSearchRec;
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begin
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if os_mode = osOS2 then
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begin
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DosFindClose (F.FindHandle);
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end
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else
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begin
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SR := PSearchRec (F.FindHandle);
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DOS.FindClose (SR^);
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FreeMem (SR, SizeOf (SearchRec));
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end;
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F.FindHandle := 0;
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end;
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function FileGetDate (Handle: longint): longint; assembler;
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asm
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mov ax, 5700h
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mov ebx, Handle
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call syscall
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mov eax, -1
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jc @FGetDateEnd
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mov ax, dx
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shld eax, ecx, 16
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@FGetDateEnd:
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end;
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function FileSetDate (Handle, Age: longint): longint;
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var FStat: PFileStatus0;
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RC: longint;
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begin
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if os_mode = osOS2 then
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begin
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New (FStat);
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RC := DosQueryFileInfo (Handle, ilStandard, FStat,
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SizeOf (FStat^));
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if RC <> 0 then
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FileSetDate := -1
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else
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begin
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FStat^.DateLastAccess := Hi (Age);
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FStat^.DateLastWrite := Hi (Age);
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FStat^.TimeLastAccess := Lo (Age);
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FStat^.TimeLastWrite := Lo (Age);
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RC := DosSetFileInfo (Handle, ilStandard, FStat,
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SizeOf (FStat^));
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if RC <> 0 then
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FileSetDate := -1
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else
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FileSetDate := 0;
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end;
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Dispose (FStat);
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end
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else
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asm
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mov ax, 5701h
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mov ebx, Handle
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mov cx, word ptr [Age]
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mov dx, word ptr [Age + 2]
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call syscall
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jnc @FSetDateEnd
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mov eax, -1
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@FSetDateEnd:
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mov [ebp - 4], eax
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end;
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end;
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function FileGetAttr (const FileName: string): longint;
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{$IFOPT H+}
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assembler;
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{$ELSE}
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var FN: string;
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begin
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FN := FileName + #0;
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{$ENDIF}
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asm
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mov ax, 4300h
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{$IFOPT H+}
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mov edx, FileName
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{$ELSE}
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lea edx, FN
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inc edx
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{$ENDIF}
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call syscall
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jnc @FGetAttrEnd
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mov eax, -1
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@FGetAttrEnd:
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{$IFOPT H-}
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mov [ebp - 4], eax
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end;
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{$ENDIF}
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end;
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function FileSetAttr (const Filename: string; Attr: longint): longint;
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{$IFOPT H+}
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assembler;
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{$ELSE}
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var FN: string;
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begin
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FN := FileName + #0;
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{$ENDIF}
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asm
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mov ax, 4301h
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mov ecx, Attr
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{$IFOPT H+}
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mov edx, FileName
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{$ELSE}
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lea edx, FN
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inc edx
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{$ENDIF}
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call syscall
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mov eax, 0
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jnc @FSetAttrEnd
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mov eax, -1
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@FSetAttrEnd:
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{$IFOPT H-}
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mov [ebp - 4], eax
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end;
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{$ENDIF}
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end;
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function DeleteFile (const FileName: string): boolean;
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{$IFOPT H+}
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assembler;
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{$ELSE}
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var FN: string;
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begin
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FN := FileName + #0;
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{$ENDIF}
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asm
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mov ax, 4100h
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{$IFOPT H+}
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mov edx, FileName
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{$ELSE}
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lea edx, FN
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inc edx
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{$ENDIF}
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call syscall
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mov eax, 0
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jc @FDeleteEnd
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inc eax
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@FDeleteEnd:
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{$IFOPT H-}
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mov [ebp - 4], eax
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end;
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{$ENDIF}
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end;
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function RenameFile (const OldName, NewName: string): boolean;
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{$IFOPT H+}
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assembler;
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{$ELSE}
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var FN1, FN2: string;
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begin
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FN1 := OldName + #0;
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FN2 := NewName + #0;
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{$ENDIF}
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asm
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mov ax, 5600h
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{$IFOPT H+}
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mov edx, OldName
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mov edi, NewName
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{$ELSE}
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lea edx, FN1
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inc edx
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lea edi, FN2
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inc edi
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{$ENDIF}
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call syscall
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mov eax, 0
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jc @FRenameEnd
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inc eax
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@FRenameEnd:
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{$IFOPT H-}
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mov [ebp - 4], eax
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end;
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{$ENDIF}
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end;
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function FileSearch (const Name, DirList: string): string;
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begin
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Result := Dos.FSearch (Name, DirList);
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end;
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{****************************************************************************
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Disk Functions
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****************************************************************************}
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{$ASMMODE ATT}
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function DiskFree (Drive: byte): int64;
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var FI: TFSinfo;
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RC: longint;
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begin
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if (os_mode = osDOS) or (os_mode = osDPMI) then
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{Function 36 is not supported in OS/2.}
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asm
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movb Drive,%dl
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movb $0x36,%ah
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call syscall
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cmpw $-1,%ax
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je .LDISKFREE1
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mulw %cx
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mulw %bx
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shll $16,%edx
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movw %ax,%dx
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movl $0,%eax
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xchgl %edx,%eax
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leave
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ret
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.LDISKFREE1:
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cltd
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leave
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ret
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end
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else
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{In OS/2, we use the filesystem information.}
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begin
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RC := DosQueryFSInfo (Drive, 1, FI, SizeOf (FI));
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if RC = 0 then
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DiskFree := int64 (FI.Free_Clusters) *
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int64 (FI.Sectors_Per_Cluster) * int64 (FI.Bytes_Per_Sector)
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else
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DiskFree := -1;
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end;
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end;
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function DiskSize (Drive: byte): int64;
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var FI: TFSinfo;
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RC: longint;
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begin
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if (os_mode = osDOS) or (os_mode = osDPMI) then
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{Function 36 is not supported in OS/2.}
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asm
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movb Drive,%dl
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movb $0x36,%ah
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call syscall
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movw %dx,%bx
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cmpw $-1,%ax
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je .LDISKSIZE1
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mulw %cx
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mulw %bx
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shll $16,%edx
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movw %ax,%dx
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movl $0,%eax
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xchgl %edx,%eax
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leave
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ret
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.LDISKSIZE1:
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cltd
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leave
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ret
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end
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else
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{In OS/2, we use the filesystem information.}
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begin
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RC := DosQueryFSinfo (Drive, 1, FI, SizeOf (FI));
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if RC = 0 then
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DiskSize := int64 (FI.Total_Clusters) *
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int64 (FI.Sectors_Per_Cluster) * int64 (FI.Bytes_Per_Sector)
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else
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DiskSize := -1;
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end;
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end;
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function GetCurrentDir: string;
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begin
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GetDir (0, Result);
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end;
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function SetCurrentDir (const NewDir: string): boolean;
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begin
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{$I-}
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ChDir (NewDir);
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Result := (IOResult = 0);
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{$I+}
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end;
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function CreateDir (const NewDir: string): boolean;
|
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begin
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{$I-}
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MkDir (NewDir);
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Result := (IOResult = 0);
|
|
{$I+}
|
|
end;
|
|
|
|
|
|
function RemoveDir (const Dir: string): boolean;
|
|
begin
|
|
{$I-}
|
|
RmDir (Dir);
|
|
Result := (IOResult = 0);
|
|
{$I+}
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
Time Functions
|
|
****************************************************************************}
|
|
|
|
{$asmmode intel}
|
|
procedure GetLocalTime (var SystemTime: TSystemTime); assembler;
|
|
asm
|
|
(* Expects the default record alignment (word)!!! *)
|
|
mov ah, 2Ah
|
|
call syscall
|
|
mov edi, SystemTime
|
|
mov ax, cx
|
|
stosw
|
|
xor eax, eax
|
|
mov al, dl
|
|
shl eax, 16
|
|
mov al, dh
|
|
stosd
|
|
push edi
|
|
mov ah, 2Ch
|
|
call syscall
|
|
pop edi
|
|
xor eax, eax
|
|
mov al, cl
|
|
shl eax, 16
|
|
mov al, ch
|
|
stosd
|
|
mov al, dl
|
|
shl eax, 16
|
|
mov al, dh
|
|
stosd
|
|
end;
|
|
{$asmmode default}
|
|
|
|
|
|
{****************************************************************************
|
|
Misc Functions
|
|
****************************************************************************}
|
|
|
|
procedure Beep;
|
|
begin
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
Locale Functions
|
|
****************************************************************************}
|
|
|
|
procedure InitAnsi;
|
|
var I: byte;
|
|
Country: TCountryCode;
|
|
begin
|
|
for I := 0 to 255 do
|
|
UpperCaseTable [I] := Chr (I);
|
|
Move (UpperCaseTable, LowerCaseTable, SizeOf (UpperCaseTable));
|
|
if os_mode = osOS2 then
|
|
begin
|
|
FillChar (Country, SizeOf (Country), 0);
|
|
DosMapCase (SizeOf (UpperCaseTable), Country, @UpperCaseTable);
|
|
end
|
|
else
|
|
begin
|
|
(* !!! TODO: DOS/DPMI mode support!!! *)
|
|
end;
|
|
for I := 0 to 255 do
|
|
if UpperCaseTable [I] <> Chr (I) then
|
|
LowerCaseTable [Ord (UpperCaseTable [I])] := Chr (I);
|
|
end;
|
|
|
|
|
|
procedure InitInternational;
|
|
var Country: TCountryCode;
|
|
CtryInfo: TCountryInfo;
|
|
Size: longint;
|
|
RC: longint;
|
|
begin
|
|
Size := 0;
|
|
FillChar (Country, SizeOf (Country), 0);
|
|
FillChar (CtryInfo, SizeOf (CtryInfo), 0);
|
|
RC := DosQueryCtryInfo (SizeOf (CtryInfo), Country, CtryInfo, Size);
|
|
if RC = 0 then
|
|
begin
|
|
DateSeparator := CtryInfo.DateSeparator;
|
|
case CtryInfo.DateFormat of
|
|
1: begin
|
|
ShortDateFormat := 'd/m/y';
|
|
LongDateFormat := 'dd" "mmmm" "yyyy';
|
|
end;
|
|
2: begin
|
|
ShortDateFormat := 'y/m/d';
|
|
LongDateFormat := 'yyyy" "mmmm" "dd';
|
|
end;
|
|
3: begin
|
|
ShortDateFormat := 'm/d/y';
|
|
LongDateFormat := 'mmmm" "dd" "yyyy';
|
|
end;
|
|
end;
|
|
TimeSeparator := CtryInfo.TimeSeparator;
|
|
DecimalSeparator := CtryInfo.DecimalSeparator;
|
|
ThousandSeparator := CtryInfo.ThousandSeparator;
|
|
CurrencyFormat := CtryInfo.CurrencyFormat;
|
|
CurrencyString := PChar (CtryInfo.CurrencyUnit);
|
|
end;
|
|
InitAnsi;
|
|
end;
|
|
|
|
function SysErrorMessage(ErrorCode: Integer): String;
|
|
|
|
begin
|
|
Result:=Format(SUnknownErrorCode,[ErrorCode]);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
OS Utils
|
|
****************************************************************************}
|
|
|
|
Function GetEnvironmentVariable(Const EnvVar : String) : String;
|
|
|
|
var P: PChar;
|
|
|
|
begin
|
|
if DosScanEnv (PChar (EnvVar), P) = 0
|
|
then GetEnvironmentVariable := StrPas (P)
|
|
else GetEnvironmentVariable := '';
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
Initialization code
|
|
****************************************************************************}
|
|
|
|
Initialization
|
|
InitExceptions; { Initialize exceptions. OS independent }
|
|
InitInternational; { Initialize internationalization settings }
|
|
Finalization
|
|
DoneExceptions;
|
|
end.
|
|
|
|
{
|
|
$Log$
|
|
Revision 1.12 2001-06-03 15:18:01 peter
|
|
* eoutofmemory and einvalidpointer fix
|
|
|
|
Revision 1.11 2001/05/21 20:50:19 hajny
|
|
* silly mistyping corrected
|
|
|
|
Revision 1.10 2001/05/20 18:40:33 hajny
|
|
* merging Carl's fixes from the fixes branch
|
|
|
|
Revision 1.9 2001/02/21 21:23:38 hajny
|
|
* GetEnvironmentVariable now really merged
|
|
|
|
Revision 1.8 2001/02/20 22:14:19 peter
|
|
* merged getenvironmentvariable
|
|
|
|
Revision 1.7 2001/01/13 11:10:59 hajny
|
|
* FileCreate and GetLocalTime fixed
|
|
|
|
Revision 1.6 2000/10/15 20:44:18 hajny
|
|
* FindClose correction
|
|
|
|
Revision 1.5 2000/09/29 21:49:41 jonas
|
|
* removed warnings
|
|
|
|
Revision 1.4 2000/08/30 06:30:55 michael
|
|
+ Merged syserrormsg fix
|
|
|
|
Revision 1.3 2000/08/25 17:23:56 hajny
|
|
* Sharing mode error fixed
|
|
|
|
Revision 1.2 2000/08/20 15:46:46 peter
|
|
* sysutils.pp moved to target and merged with disk.inc, filutil.inc
|
|
Revision 1.1.2.3 2000/08/25 17:20:57 hajny
|
|
* Sharing mode error fixed
|
|
|
|
Revision 1.1.2.2 2000/08/22 19:21:48 michael
|
|
+ Implemented syserrormessage. Made dummies for go32v2 and OS/2
|
|
* Changed linux/errors.pp so it uses pchars for storage.
|
|
|
|
Revision 1.1.2.1 2000/08/20 15:08:32 peter
|
|
* forgot the add command :(
|
|
|
|
}
|