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696 lines
16 KiB
PHP
696 lines
16 KiB
PHP
{
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This file is part of the Free Pascal Run time library.
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Copyright (c) 1999-2000 by the Free Pascal development team
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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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{****************************************************************************
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subroutines For UnTyped File handling
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****************************************************************************}
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type
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UnTypedFile=File;
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procedure InitFile(var f : file);
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begin
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FillChar(f,SizeOf(FileRec),0);
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FileRec(f).Handle:=UnusedHandle;
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FileRec(f).mode:=fmClosed;
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end;
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{$ifdef FPC_HAS_FEATURE_WIDESTRINGS}
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Procedure Assign(out f:File;const Name: UnicodeString);
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{
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Assign Name to file f so it can be used with the file routines
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}
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Begin
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InitFile(F);
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{$ifdef FPC_ANSI_TEXTFILEREC}
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FileRec(f).Name:=ToSingleByteFileSystemEncodedFileName(Name);
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{$ifdef USE_FILEREC_FULLNAME}
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if Length(Name)>255 then
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RawByteString(FileRec(f).FullName):=Name;
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{$endif USE_FILEREC_FULLNAME}
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{$else FPC_ANSI_TEXTFILEREC}
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FileRec(f).Name:=Name;
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{$ifdef USE_FILEREC_FULLNAME}
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if Length(Name)>255 then
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UnicodeString(FileRec(f).FullName):=Name;
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{$endif USE_FILEREC_FULLNAME}
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{$endif FPC_ANSI_TEXTFILEREC}
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{ null terminate, since the name array is regularly used as p(wide/Ansi)Char }
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FileRec(f).Name[high(FileRec(f).Name)]:=#0;
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End;
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{$endif FPC_HAS_FEATURE_WIDESTRINGS}
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{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
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Procedure Assign(out f:File;const Name: RawByteString);
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{
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Assign Name to file f so it can be used with the file routines
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}
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Begin
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InitFile(F);
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{$ifdef FPC_ANSI_TEXTFILEREC}
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{ ensure the characters in the record's filename are encoded correctly }
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FileRec(f).Name:=ToSingleByteFileSystemEncodedFileName(Name);
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{$ifdef USE_FILEREC_FULLNAME}
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if Length(Name)>255 then
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RawbyteString(FileRec(f).FullName):=Name;
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{$endif USE_FILEREC_FULLNAME}
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{$else FPC_ANSI_TEXTFILEREC}
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FileRec(f).Name:=Name;
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{$ifdef USE_FILEREC_FULLNAME}
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if Length(Name)>255 then
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UnicodeString(FileRec(f).FullName):=Name;
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{$endif USE_FILEREC_FULLNAME}
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{$endif FPC_ANSI_TEXTFILEREC}
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{ null terminate, since the name array is regularly used as p(wide/Ansi)Char }
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FileRec(f).Name[high(FileRec(f).Name)]:=#0;
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End;
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{$endif FPC_HAS_FEATURE_ANSISTRINGS}
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Procedure Assign(out f:File;const Name: ShortString);
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{
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Assign Name to file f so it can be used with the file routines
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}
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Begin
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{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
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Assign(f,AnsiString(Name));
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{$else FPC_HAS_FEATURE_ANSISTRINGS}
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InitFile(f);
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{ warning: no encoding support }
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FileRec(f).Name:=Name;
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{ null terminate, since the name array is regularly used as p(wide/Ansi)Char }
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FileRec(f).Name[high(FileRec(f).Name)]:=#0;
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{$endif FPC_HAS_FEATURE_ANSISTRINGS}
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End;
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Procedure Assign(out f:File;const p: PAnsiChar);
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Begin
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{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
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Assign(f,AnsiString(p));
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{$else FPC_HAS_FEATURE_ANSISTRINGS}
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{ no use in making this the one that does the work, since the name field is
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limited to 255 characters anyway }
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Assign(f,strpas(p));
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{$endif FPC_HAS_FEATURE_ANSISTRINGS}
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End;
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Procedure Assign(out f:File;const c: AnsiChar);
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Begin
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{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
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Assign(f,AnsiString(c));
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{$else FPC_HAS_FEATURE_ANSISTRINGS}
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Assign(f,ShortString(c));
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{$endif FPC_HAS_FEATURE_ANSISTRINGS}
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End;
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Procedure Rewrite(var f:File;l:Longint);[IOCheck];
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{
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Create file f with recordsize of l
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}
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Begin
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If InOutRes <> 0 then
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exit;
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Case FileRec(f).mode Of
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fmInOut,fmInput,fmOutput : Close(f);
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fmClosed : ;
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else
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Begin
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InOutRes:=102;
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exit;
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End;
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End;
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If l=0 Then
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InOutRes:=2
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else
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Begin
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{ Reopen with filemode 2, to be Tp compatible (PFV) }
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{$ifdef USE_FILEREC_FULLNAME}
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if Assigned(FileRec(f).FullName) then
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Do_Open(f,FileRec(f).FullName,$1002,false)
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else
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{$endif USE_FILEREC_FULLNAME}
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Do_Open(f,PFileTextRecChar(@FileRec(f).Name),$1002,false);
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FileRec(f).RecSize:=l;
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End;
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End;
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Procedure Reset(var f:File;l:Longint);[IOCheck];
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{
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Open file f with recordsize of l and filemode
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}
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Begin
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If InOutRes <> 0 then
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Exit;
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Case FileRec(f).mode Of
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fmInOut,fmInput,fmOutput : Close(f);
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fmClosed : ;
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else
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Begin
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InOutRes:=102;
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exit;
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End;
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End;
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If l=0 Then
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InOutRes:=2
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else
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Begin
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{$ifdef USE_FILEREC_FULLNAME}
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if Assigned(FileRec(f).FullName) then
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Do_Open(f,FileRec(f).FullName,Filemode,false)
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else
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{$endif USE_FILEREC_FULLNAME}
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Do_Open(f,PFileTextRecChar(@FileRec(f).Name),Filemode,false);
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FileRec(f).RecSize:=l;
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End;
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End;
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Procedure Rewrite(Var f:File);[IOCheck];
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{
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Create file with (default) 128 byte records
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}
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Begin
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If InOutRes <> 0 then
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exit;
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Rewrite(f,128);
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End;
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Procedure Reset(Var f:File);[IOCheck];
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{
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Open file with (default) 128 byte records
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}
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Begin
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If InOutRes <> 0 then
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exit;
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Reset(f,128);
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End;
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Procedure BlockWrite(Var f:File;Const Buf;Count:Int64;var Result:Int64);[IOCheck];
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{
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Write Count records from Buf to file f, return written records in result
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}
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Begin
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Result:=0;
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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fmInOut,fmOutput :
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Result:=Do_Write(FileRec(f).Handle,@Buf,Count*FileRec(f).RecSize)
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div FileRec(f).RecSize;
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fmInPut: inOutRes := 105;
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else InOutRes:=103;
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end;
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End;
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Procedure BlockWrite(Var f:File;Const Buf;Count:Longint;var Result:Longint);[IOCheck];
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{
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Write Count records from Buf to file f, return written records in result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : Int64;
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Begin
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BlockWrite(f,Buf,Count,l);
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Result:=longint(l);
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockWrite(Var f:File;Const Buf;Count:Word;var Result:Word);[IOCheck];
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{
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Write Count records from Buf to file f, return written records in Result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : Int64;
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Begin
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BlockWrite(f,Buf,Count,l);
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Result:=word(l);
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockWrite(Var f:File;Const Buf;Count:Cardinal;var Result:Cardinal);[IOCheck];
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{
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Write Count records from Buf to file f, return written records in Result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : Int64;
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Begin
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BlockWrite(f,Buf,Count,l);
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Result:=l;
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockWrite(Var f:File;Const Buf;Count:Word;var Result:Integer);[IOCheck];
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{
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Write Count records from Buf to file f, return written records in Result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : Int64;
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Begin
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BlockWrite(f,Buf,Count,l);
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Result:=integer(l);
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockWrite(Var f:File;Const Buf;Count:Longint);[IOCheck];
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{
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Write Count records from Buf to file f, if none a Read and Count>0 then
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InOutRes is set
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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Result : Int64;
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Begin
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BlockWrite(f,Buf,Count,Result);
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If (InOutRes=0) and (Result<Count) and (Count>0) Then
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InOutRes:=101;
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockRead(var f:File;var Buf;Count:Int64;var Result:Int64);[IOCheck];
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{
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Read Count records from file f ro Buf, return number of read records in
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Result
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}
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Begin
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Result:=0;
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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fmInOut,fmInput :
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Result:=Do_Read(FileRec(f).Handle,@Buf,count*FileRec(f).RecSize)
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div FileRec(f).RecSize;
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fmOutput: inOutRes := 104;
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else InOutRes:=103;
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end;
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End;
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Procedure BlockRead(var f:File;var Buf;Count:Longint;var Result:Longint);[IOCheck];
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{
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Read Count records from file f ro Buf, return number of read records in
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Result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : int64;
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Begin
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BlockRead(f,Buf,Count,l);
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Result:=longint(l);
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockRead(var f:File;var Buf;count:Word;var Result:Word);[IOCheck];
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{
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Read Count records from file f to Buf, return number of read records in
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Result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : int64;
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Begin
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BlockRead(f,Buf,Count,l);
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Result:=word(l);
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockRead(var f:File;var Buf;count:Cardinal;var Result:Cardinal);[IOCheck];
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{
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Read Count records from file f to Buf, return number of read records in
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Result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : int64;
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Begin
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BlockRead(f,Buf,Count,l);
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Result:=l;
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockRead(var f:File;var Buf;count:Word;var Result:Integer);[IOCheck];
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{
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Read Count records from file f to Buf, return number of read records in
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Result
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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l : int64;
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Begin
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BlockRead(f,Buf,Count,l);
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Result:=integer(l);
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Procedure BlockRead(Var f:File;Var Buf;Count:Int64);[IOCheck];
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{
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Read Count records from file f to Buf, if none are read and Count>0 then
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InOutRes is set
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}
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{$ifdef EXCLUDE_COMPLEX_PROCS}
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begin
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runerror(217);
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end;
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{$else EXCLUDE_COMPLEX_PROCS}
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var
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Result : int64;
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Begin
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BlockRead(f,Buf,Count,Result);
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If (InOutRes=0) and (Result<Count) and (Count>0) Then
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InOutRes:=100;
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End;
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{$endif EXCLUDE_COMPLEX_PROCS}
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Function FilePos(var f:File):Int64;[IOCheck];
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{
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Return current Position In file f in records
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}
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Begin
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FilePos:=0;
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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fmInOut,fmInput,fmOutput :
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FilePos:=Do_FilePos(FileRec(f).Handle) div FileRec(f).RecSize;
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else
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InOutRes:=103;
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end;
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End;
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Function FileSize(var f:File):Int64;[IOCheck];
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{
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Return the size of file f in records
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}
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Begin
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FileSize:=0;
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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fmInOut,fmInput,fmOutput :
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begin
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if (FileRec(f).RecSize>0) then
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FileSize:=Do_FileSize(FileRec(f).Handle) div FileRec(f).RecSize;
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end;
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else InOutRes:=103;
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end;
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End;
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Function Eof(var f:File):Boolean;[IOCheck];
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{
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Return True if we're at the end of the file f, else False is returned
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}
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Begin
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Eof:=false;
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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{Can't use do_ routines because we need record support}
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fmInOut,fmInput,fmOutput : Eof:=(FileSize(f)<=FilePos(f));
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else InOutRes:=103;
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end;
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End;
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Procedure Seek(var f:File;Pos:Int64);[IOCheck];
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{
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Goto record Pos in file f
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}
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Begin
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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fmInOut,fmInput,fmOutput :
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Do_Seek(FileRec(f).Handle,Pos*FileRec(f).RecSize);
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else InOutRes:=103;
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end;
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End;
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Procedure Truncate(Var f:File);[IOCheck];
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{
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Truncate/Cut file f at the current record Position
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}
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Begin
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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fmInOut,fmOutput :
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Do_Truncate(FileRec(f).Handle,FilePos(f)*FileRec(f).RecSize);
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else InOutRes:=103;
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end;
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End;
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Procedure Close(var f:File);[IOCheck];
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{
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Close file f
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}
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Begin
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If InOutRes <> 0 then
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exit;
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case FileRec(f).Mode of
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fmInOut,fmInput,fmOutput :
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begin
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Do_Close(FileRec(f).Handle);
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FileRec(f).mode:=fmClosed;
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end
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else InOutRes:=103;
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end;
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{$ifdef USE_FILEREC_FULLNAME}
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{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
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UnicodeString(FileRec(f).FullName):='';
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{$endif FPC_HAS_FEATURE_ANSISTRINGS}
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{$endif USE_FILEREC_FULLNAME}
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End;
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Procedure Erase(var f : File);[IOCheck];
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Begin
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if InOutRes<>0 then
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exit;
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if FileRec(f).mode<>fmClosed then
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begin
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InOutRes:=102;
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exit;
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end;
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Do_Erase(PFileTextRecChar(@FileRec(f).Name),false);
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End;
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{$ifdef FPC_HAS_FEATURE_WIDESTRINGS}
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Procedure Rename(var f : File; const S : UnicodeString);[IOCheck];
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|
{$ifdef FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
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var
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fs: RawByteString;
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{$endif FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
Begin
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if InOutRes<>0 then
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exit;
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if FileRec(f).mode<>fmClosed then
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begin
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|
InOutRes:=102;
|
|
exit;
|
|
end;
|
|
{$ifdef FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
{ it's slightly faster to convert the unicodestring here to rawbytestring
|
|
than doing it in do_rename(), because here we still know the length }
|
|
fs:=ToSingleByteFileSystemEncodedFileName(s);
|
|
Do_Rename(PFileTextRecChar(@FileRec(f).Name),PAnsiChar(fs),false,true);
|
|
If InOutRes=0 then
|
|
FileRec(f).Name:=fs
|
|
{$else FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
Do_Rename(PFileTextRecChar(@FileRec(f).Name),PUnicodeChar(S),false,false);
|
|
If InOutRes=0 then
|
|
{$ifdef FPC_ANSI_TEXTFILEREC}
|
|
FileRec(f).Name:=ToSingleByteFileSystemEncodedFileName(s);
|
|
{$else FPC_ANSI_TEXTFILEREC}
|
|
FileRec(f).Name:=s
|
|
{$endif FPC_ANSI_TEXTFILEREC}
|
|
{$endif FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
End;
|
|
{$endif FPC_HAS_FEATURE_WIDESTRINGS}
|
|
|
|
|
|
{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
|
|
Procedure Rename(var f : File;const s : RawByteString);[IOCheck];
|
|
var
|
|
{$ifdef FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
fs: RawByteString;
|
|
pdst: PAnsiChar;
|
|
{$else FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
fs: UnicodeString;
|
|
pdst: PUnicodeChar;
|
|
{$endif FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
dstchangeable: boolean;
|
|
Begin
|
|
if InOutRes<>0 then
|
|
exit;
|
|
if FileRec(f).mode<>fmClosed then
|
|
begin
|
|
InOutRes:=102;
|
|
exit;
|
|
end;
|
|
{$ifdef FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
dstchangeable:=false;
|
|
pdst:=PAnsiChar(s);
|
|
if StringCodePage(s)<>DefaultFileSystemCodePage then
|
|
begin
|
|
fs:=ToSingleByteFileSystemEncodedFileName(s);
|
|
pdst:=PAnsiChar(fs);
|
|
dstchangeable:=true;
|
|
end
|
|
else
|
|
fs:=s;
|
|
{$else FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
{ it's slightly faster to convert the rawbytestring here to unicodestring
|
|
than doing it in do_rename, because here we still know the length }
|
|
fs:=unicodestring(s);
|
|
pdst:=PUnicodeChar(fs);
|
|
dstchangeable:=true;
|
|
{$endif FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
Do_Rename(PFileTextRecChar(@FileRec(f).Name),pdst,false,dstchangeable);
|
|
If InOutRes=0 then
|
|
{$if defined(FPC_ANSI_TEXTFILEREC) and not defined(FPCRTL_FILESYSTEM_SINGLE_BYTE_API)}
|
|
FileRec(f).Name:=ToSingleByteFileSystemEncodedFileName(fs)
|
|
{$else FPC_ANSI_TEXTFILEREC and not FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
FileRec(f).Name:=fs
|
|
{$endif FPC_ANSI_TEXTFILEREC and not FPCRTL_FILESYSTEM_SINGLE_BYTE_API}
|
|
End;
|
|
{$endif FPC_HAS_FEATURE_ANSISTRINGS}
|
|
|
|
|
|
Procedure Rename(var f : File;const s : ShortString);[IOCheck];
|
|
{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
|
|
Begin
|
|
Rename(f,AnsiString(s));
|
|
End;
|
|
{$else FPC_HAS_FEATURE_ANSISTRINGS}
|
|
var
|
|
p : array[0..255] Of AnsiChar;
|
|
Begin
|
|
Move(s[1],p,Length(s));
|
|
p[Length(s)]:=#0;
|
|
Rename(f,PAnsichar(@p));
|
|
End;
|
|
{$endif FPC_HAS_FEATURE_ANSISTRINGS}
|
|
|
|
|
|
Procedure Rename(var f:File;const p : PAnsiChar);[IOCheck];
|
|
{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
|
|
Begin
|
|
Rename(f,AnsiString(p));
|
|
End;
|
|
{$else FPC_HAS_FEATURE_ANSISTRINGS}
|
|
var
|
|
len: SizeInt;
|
|
Begin
|
|
if InOutRes<>0 then
|
|
exit;
|
|
if FileRec(f).mode<>fmClosed then
|
|
begin
|
|
InOutRes:=102;
|
|
exit;
|
|
end;
|
|
Do_Rename(PFileTextRecChar(@FileRec(f).Name),p,false,false);
|
|
{ check error code of do_rename }
|
|
if InOutRes=0 then
|
|
begin
|
|
len:=min(StrLen(p),high(FileRec(f).Name));
|
|
Move(p^,FileRec(f).Name,len);
|
|
FileRec(f).Name[len]:=#0;
|
|
end;
|
|
End;
|
|
{$endif FPC_HAS_FEATURE_ANSISTRINGS}
|
|
|
|
|
|
Procedure Rename(var f:File;const c : AnsiChar);[IOCheck];
|
|
{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
|
|
Begin
|
|
Rename(f,AnsiString(c));
|
|
End;
|
|
{$else FPC_HAS_FEATURE_ANSISTRINGS}
|
|
var
|
|
p : array[0..1] Of AnsiChar;
|
|
Begin
|
|
p[0]:=c;
|
|
p[1]:=#0;
|
|
Rename(f,PAnsiChar(@p));
|
|
End;
|
|
{$endif FPC_HAS_FEATURE_ANSISTRINGS}
|
|
|
|
{$ifdef FPC_HAS_FEATURE_UNICODESTRINGS}
|
|
Function GetFullName(var f:File) : UnicodeString;
|
|
begin
|
|
{$ifdef USE_FILEREC_FULLNAME}
|
|
if Assigned(FileRec(f).FullName) then
|
|
Result:=UnicodeString(FileRec(f).FullName)
|
|
else
|
|
{$endif USE_FILEREC_FULLNAME}
|
|
Result:=PFileTextRecChar(@FileRec(f).Name);
|
|
end;
|
|
{$endif FPC_HAS_FEATURE_UNICODESTRINGS}
|
|
|