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{
*********************************************************************
Copyright (C) 1997, 1998 Gertjan Schouten
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************
System Utilities For Free Pascal
}
function ChangeFileExt(const FileName, Extension: PathStr): PathStr;
var
i : longint;
EndSep : Set of Char;
SOF : Boolean;
begin
i := Length(FileName);
EndSep:=AllowDirectorySeparators+AllowDriveSeparators+[ExtensionSeparator];
while (I > 0) and not(FileName[I] in EndSep) do
Dec(I);
if (I = 0) or (FileName[I] <> ExtensionSeparator) then
I := Length(FileName)+1
else
begin
SOF:=(I=1) or (FileName[i-1] in AllowDirectorySeparators);
if (SOF) and not FirstDotAtFileNameStartIsExtension then
I:=Length(FileName)+1;
end;
Result := Copy(FileName, 1, I - 1) + Extension;
end;
function ExtractFilePath(const FileName: PathStr): PathStr;
var
i : longint;
EndSep : Set of Char;
begin
i := Length(FileName);
EndSep:=AllowDirectorySeparators+AllowDriveSeparators;
while (i > 0) and not CharInSet(FileName[i],EndSep) do
Dec(i);
If I>0 then
Result := Copy(FileName, 1, i)
else
Result:='';
end;
function ExtractFileDir(const FileName: PathStr): PathStr;
var
i : longint;
EndSep : Set of Char;
begin
I := Length(FileName);
EndSep:=AllowDirectorySeparators+AllowDriveSeparators;
while (I > 0) and not CharInSet(FileName[I],EndSep) do
Dec(I);
if (I > 1) and CharInSet(FileName[I],AllowDirectorySeparators) and
not CharInSet(FileName[I - 1],EndSep) then
Dec(I);
Result := Copy(FileName, 1, I);
end;
function ExtractFileDrive(const FileName: PathStr): PathStr;
var
i,l: longint;
begin
Result := '';
l:=Length(FileName);
if (l<2) then
exit;
{$IFDEF HASAMIGA}
i:=Pos(DriveSeparator,FileName);
if (i > 0) then Result:=Copy(FileName,1,i);
{$ELSE}
If CharInSet(FileName[2],AllowDriveSeparators) then
result:=Copy(FileName,1,2)
else if CharInSet(FileName[1],AllowDirectorySeparators) and
CharInSet(FileName[2],AllowDirectorySeparators) then
begin
i := 2;
{ skip share }
While (i<l) and Not CharInSet(Filename[i+1],AllowDirectorySeparators) do
inc(i);
inc(i);
While (i<l) and Not CharInSet(Filename[i+1],AllowDirectorySeparators) do
inc(i);
Result:=Copy(FileName,1,i);
end;
{$ENDIF}
end;
function ExtractFileName(const FileName: PathStr): PathStr;
var
i : longint;
EndSep : Set of Char;
begin
I := Length(FileName);
EndSep:=AllowDirectorySeparators+AllowDriveSeparators;
while (I > 0) and not CharInSet(FileName[I],EndSep) do
Dec(I);
Result := Copy(FileName, I + 1, MaxInt);
end;
function ExtractFileExt(const FileName: PathStr): PathStr;
var
i : longint;
EndSep : Set of Char;
SOF : Boolean; // Dot at Start of filename ?
begin
Result:='';
I := Length(FileName);
EndSep:=AllowDirectorySeparators+AllowDriveSeparators+[ExtensionSeparator];
while (I > 0) and not CharInSet(FileName[I],EndSep) do
Dec(I);
if (I > 0) and (FileName[I] = ExtensionSeparator) then
begin
SOF:=(I=1) or (FileName[i-1] in AllowDirectorySeparators);
if (Not SOF) or FirstDotAtFileNameStartIsExtension then
Result := Copy(FileName, I, MaxInt);
end
else
Result := '';
end;
{$ifndef HASEXTRACTSHORTPATHNAME}
function ExtractShortPathName(Const FileName : PathStr) : PathStr;
{$if defined(MSWINDOWS) and not defined(SYSUTILSUNICODE)}
var
TempFile, TempResult: UnicodeString;
{$endif}
begin
{$ifdef MSWINDOWS}
{$if not defined(SYSUTILSUNICODE)}
TempFile:=FileName;
SetLength(TempResult,Max_Path);
SetLength(TempResult,GetShortPathNameW(PWideChar(TempFile), PWideChar(TempResult),Length(TempResult)));
widestringmanager.Unicode2AnsiMoveProc(PWideChar(TempResult),Result,DefaultRTLFileSystemCodePage,Length(TempResult));
{$else not SYSUTILSUNICODE}
SetLength(Result,Max_Path);
SetLength(Result,GetShortPathNameW(PWideChar(FileName), PWideChar(Result),Length(Result)));
{$endif not SYSUTILSUNICODE}
{$else MSWindows}
Result:=FileName;
{$endif MSWindows}
end;
{$endif HASEXTRACTSHORTPATHNAME}
{$DEFINE FPC_FEXPAND_SYSUTILS}
{$I fexpand.inc}
function ExpandFileName (Const FileName : PathStr): PathStr;
Var S : PathStr;
Begin
S:=FileName;
DoDirSeparators(S);
Result:=Fexpand(S);
end;
function ExpandFileName (Const FileName, BasePath : PathStr): PathStr;
Var S : PathStr;
Begin
S:=FileName;
DoDirSeparators(S);
Result:=Fexpand(S,BasePath);
end;
{$ifndef HASEXPANDUNCFILENAME}
function ExpandUNCFileName (Const FileName : PathStr): PathStr;
begin
Result:=ExpandFileName (FileName);
//!! Here should follow code to replace the drive: part with UNC...
end;
{$endif HASEXPANDUNCFILENAME}
function ExpandFileNameCase (const FileName: PathStr; out MatchFound: TFilenameCaseMatch): PathStr;
var
{$ifdef SYSUTILSUNICODE}
SR: TUnicodeSearchRec;
{$else SYSUTILSUNICODE}
SR: TRawByteSearchRec;
{$endif SYSUTILSUNICODE}
ItemsFound: byte;
FoundPath: PathStr;
RestPos: SizeUInt;
Root: PathStr;
procedure TryCase (const Base, Rest: PathStr);
var
{$ifdef SYSUTILSUNICODE}
SR: TUnicodeSearchRec;
{$else SYSUTILSUNICODE}
SR: TRawByteSearchRec;
{$endif SYSUTILSUNICODE}
RC: longint;
NextDirPos: SizeUInt;
NextPart: PathStr;
NextRest: PathStr;
SearchBase: PathStr;
begin
NextDirPos := 1;
while (NextDirPos <= Length (Rest)) and
not CharInSet(Rest[NextDirPos],(AllowDirectorySeparators)) do
Inc (NextDirPos);
NextPart := Copy (Rest, 1, Pred (NextDirPos));
{$IFDEF FPC_FEXPAND_DIRSEP_IS_UPDIR}
if (Length (Rest) >= NextDirPos) and
CharInSet(Rest[NextDirPos],AllowDirectorySeparators) then
{$ELSE FPC_FEXPAND_DIRSEP_IS_UPDIR}
while (Length (Rest) >= NextDirPos) and
CharInSet(Rest[NextDirPos],AllowDirectorySeparators) do
{$ENDIF FPC_FEXPAND_DIRSEP_IS_UPDIR}
Inc (NextDirPos);
NextRest := Copy (Rest, NextDirPos, Length (Rest) - Pred (NextDirPos));
if (Base = '') or CharInSet(Base[Length (Base)],AllowDirectorySeparators) then
SearchBase := Base
else
{$ifdef SYSUTILSUNICODE}
SearchBase := Base + DirectorySeparator;
RC := FindFirst (SearchBase + AllFilesMask, faAnyFile, SR);
{$else SYSUTILSUNICODE}
SearchBase := Base + ToSingleByteFileSystemEncodedFileName(DirectorySeparator);
RC := FindFirst (SearchBase + ToSingleByteFileSystemEncodedFileName(AllFilesMask), faAnyFile, SR);
{$endif SYSUTILSUNICODE}
while (RC = 0) and (ItemsFound < 2) do
begin
if UpCase (NextPart) = UpCase (SR.Name) then
begin
if Length (NextPart) = Length (Rest) then
begin
Inc (ItemsFound);
if ItemsFound = 1 then
FoundPath := SearchBase + SR.Name;
end
else if SR.Attr and faDirectory = faDirectory then
{$ifdef SYSUTILSUNICODE}
TryCase (SearchBase + SR.Name + DirectorySeparator, NextRest);
{$else SYSUTILSUNICODE}
TryCase (SearchBase + SR.Name + ToSingleByteFileSystemEncodedFileName(DirectorySeparator), NextRest);
{$endif SYSUTILSUNICODE}
end;
if ItemsFound < 2 then
RC := FindNext (SR);
end;
FindClose (SR);
end;
begin
Result := ExpandFileName (FileName);
if FileName = '' then
MatchFound := mkExactMatch
else
if (FindFirst (FileName, faAnyFile, SR) = 0) or
(* Special check for a root directory or a directory with a trailing slash *)
(* which are not found using FindFirst. *)
DirectoryExists (FileName) then
begin
MatchFound := mkExactMatch;
Result := ExtractFilePath (Result) + SR.Name;
FindClose (SR);
end
else
begin
(* Better close the search handle here before starting the recursive search *)
FindClose (SR);
MatchFound := mkNone;
if FileNameCaseSensitive then
begin
ItemsFound := 0;
FoundPath := '';
RestPos := Length (ExtractFileDrive (FileName)) + 1;
if (Length (FileName) > RestPos) then
begin
{$IFDEF FPC_FEXPAND_DIRSEP_IS_UPDIR}
if (Length (FileName) >= RestPos) and
CharInSet(FileName[RestPos],AllowDirectorySeparators) then
{$ELSE FPC_FEXPAND_DIRSEP_IS_UPDIR}
while (Length (FileName) >= RestPos) and
CharInSet(FileName[RestPos],AllowDirectorySeparators) do
{$ENDIF FPC_FEXPAND_DIRSEP_IS_UPDIR}
Inc (RestPos);
Root := Copy (FileName, 1, Pred (RestPos));
TryCase (Root, Copy (FileName, RestPos, Length (FileName) - Length (Root)));
if ItemsFound > 0 then
begin
Result := ExpandFileName (FoundPath);
if ItemsFound = 1 then
MatchFound := mkSingleMatch
else
MatchFound := mkAmbiguous;
end;
end;
end;
end;
end;
{$if not declared(MaxDirs)}
Const
MaxDirs = 129;
{$endif}
function ExtractRelativepath (Const BaseName,DestName : PathStr): PathStr;
Var Source, Dest : PathStr;
Sc,Dc,I,J
{$ifndef SYSUTILSUNICODE}
,Len, NewLen
{$endif not SYSUTILSUNICODE}
: Longint;
SD,DD : Array[1..MaxDirs] of PathPChar;
Const OneLevelBack = '..'+DirectorySeparator;
begin
If Uppercase(ExtractFileDrive(BaseName))<>Uppercase(ExtractFileDrive(DestName)) Then
begin
Result:=DestName;
exit;
end;
Source:=ExcludeTrailingPathDelimiter(ExtractFilePath(BaseName));
Dest:=ExcludeTrailingPathDelimiter(ExtractFilePath(DestName));
SC:=GetDirs (Source,SD);
DC:=GetDirs (Dest,DD);
I:=1;
While (I<=DC) and (I<=SC) do
begin
If StrIcomp(DD[i],SD[i])=0 then
Inc(i)
else
Break;
end;
Result:='';
{$ifdef SYSUTILSUNICODE}
For J:=I to SC do Result:=Result+OneLevelBack;
For J:=I to DC do Result:=Result+DD[J]+DirectorySeparator;
{$else SYSUTILSUNICODE}
{ prevent conversion to DefaultSystemCodePage due to concatenation of
constant string -- and optimise a little by reducing the numher of
setlength cals }
if SC>=I then
begin
Len:=Length(Result);
SetLength(Result,Len+(SC-I+1)*Length(OneLevelBack));
For J:=0 to SC-I do
move(shortstring(OneLevelBack)[1],Result[Len+1+J*Length(OneLevelBack)],Length(OneLevelBack));
end;
if DC>=I then
begin
Len:=Length(Result);
NewLen:=Len+(DC-I+1)*sizeof(ansichar);
For J:=I to DC do
Inc(NewLen,Length(DD[J]));
SetLength(Result,NewLen);
For J:=I to DC do
begin
NewLen:=Length(DD[J]);
Move(DD[J][0],Result[Len+1],NewLen);
inc(Len,NewLen);
Result[Len+1]:=DirectorySeparator;
Inc(Len);
end;
end;
{$endif SYSUTILSUNICODE}
Result:=Result+ExtractFileName(DestName);
end;
Procedure DoDirSeparators (Var FileName : PathStr); {$ifdef FPC_HAS_CPSTRING}rtlproc;{$endif}
Var I : longint;
begin
For I:=1 to Length(FileName) do
If CharInSet(FileName[I],AllowDirectorySeparators) then
FileName[i]:=DirectorySeparator;
end;
Function SetDirSeparators (Const FileName : PathStr) : PathStr;
begin
Result:=FileName;
DoDirSeparators (Result);
end;
{
DirName is split in a #0 separated list of directory names,
Dirs is an array of pchars, pointing to these directory names.
The function returns the number of directories found, or -1
if none were found.
}
Function GetDirs (Var DirName : PathStr; Var Dirs : Array of PathPChar) : Longint; {$ifdef FPC_HAS_CPSTRING}rtlproc;{$endif}
Var I : Longint;
begin
I:=1;
Result:=-1;
While I<=Length(DirName) do
begin
If (CharInSet(DirName[i],AllowDirectorySeparators)
{$ifdef HASAMIGA}
or (DirName[i] = DriveSeparator)
{$endif}
) and
{ avoid error in case last char=pathdelim }
(length(dirname)>i) then
begin
DirName[i]:=#0;
Inc(Result);
Dirs[Result]:=@DirName[I+1];
end;
Inc(I);
end;
If Result>-1 then inc(Result);
end;
function IncludeTrailingPathDelimiter(Const Path : PathStr) : PathStr;
Var
l : Integer;
begin
Result:=Path;
l:=Length(Result);
If (L=0) or not CharInSet(Result[l],AllowDirectorySeparators) then
{$ifdef HASAMIGA}
If (L>0) and (Result[l] <> DriveSeparator) then
{$endif}
{$ifdef SYSUTILSUNICODE}
Result:=Result+DirectorySeparator;
{$else SYSUTILSUNICODE}
begin
SetLength(Result,l+1);
Result[l+1]:=DirectorySeparator;
end;
{$endif SYSUTILSUNICODE}
end;
function IncludeTrailingBackslash(Const Path : PathStr) : PathStr;
begin
Result:=IncludeTrailingPathDelimiter(Path);
end;
function ExcludeTrailingBackslash(Const Path: PathStr): PathStr;
begin
Result:=ExcludeTrailingPathDelimiter(Path);
end;
function ExcludeTrailingPathDelimiter(Const Path: PathStr): PathStr;
Var
L : Integer;
begin
L:=Length(Path);
If (L>0) and CharInSet(Path[L],AllowDirectorySeparators) then
Dec(L);
Result:=Copy(Path,1,L);
end;
function IncludeLeadingPathDelimiter(Const Path : PathStr) : PathStr;
Var
l : Integer;
begin
Result:=Path;
l:=Length(Result);
If (L=0) or not CharInSet(Result[1],AllowDirectorySeparators) then
{$ifdef SYSUTILSUNICODE}
Result:=DirectorySeparator+Result;
{$else SYSUTILSUNICODE}
begin
SetLength(Result,l+1);
Move(Result[1],Result[2],l);
Result[1]:=DirectorySeparator;
end;
{$endif SYSUTILSUNICODE}
end;
function ExcludeLeadingPathDelimiter(Const Path: PathStr): PathStr;
Var
L : Integer;
begin
Result:=Path;
L:=Length(Result);
If (L>0) and CharInSet(Result[1],AllowDirectorySeparators) then
Delete(Result,1,1);
end;
function IsPathDelimiter(Const Path: PathStr; Index: Integer): Boolean;
begin
Result:=(Index>0) and (Index<=Length(Path)) and CharInSet(Path[Index],AllowDirectorySeparators);
end;
function ConcatPaths(const Paths: array of PathStr): PathStr;
var
I: Integer;
begin
if Length(Paths) > 0 then
begin
Result := Paths[0];
for I := 1 to Length(Paths) - 1 do
Result := IncludeTrailingPathDelimiter(Result) + ExcludeLeadingPathDelimiter(Paths[I]);
end else
Result := '';
end;
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