删除功能注意:目录后要加'\'{**Summary ====================================================== name : DeleteFiles PARAMS : const Path, Mask : string; recursive : boolean RETURNS : - PURPOSE : delete several files with joker. Optional recursive = search in subdirectories. EXAMPLE : DeleteFiles ('c:\temp\', '*.txt', True); UPDATES : ===============================================================*} procedure DeleteFiles (const Path, Mask : string; recursive : boolean); var Result : integer; SearchRec : TSearchRec; begin Result := FindFirst(Path + Mask, faAnyFile - faDirectory, SearchRec); while Result = 0 do begin if not DeleteFile (Path + SearchRec.name) then begin FileSetAttr (Path + SearchRec.name, 0); { reset all flags } DeleteFile (Path + SearchRec.name); end; Result := FindNext(SearchRec); end; FindClose(SearchRec); if not recursive then exit; Result := FindFirst(Path + '*.*', faDirectory, SearchRec); while Result = 0 do begin if (SearchRec.name <> '.') and (SearchRec.name <> '..') then begin FileSetAttr (Path + SearchRec.name, faDirectory); DeleteFiles (Path + SearchRec.name + '\', Mask, TRUE); RmDir (Path + SearchRec.name); end; Result := FindNext(SearchRec); end; FindClose(SearchRec); end;
procedure TForm1.BitBtn1Click(Sender: TObject); var sr:TsearchRec; begin
if directoryExists('g:\a') then begin if FindFirst('g:\a\*.*',faAnyFile,sr)=0 then begin repeat deleteFile('g:\a\'+sr.Name); until FindNext(sr)<>0; Findclose(sr); end else CreateDir('g:\a'); end else CreateDir('g:\a'); end;
---- 1、拷贝目录 ---- 为了能拷贝目录下带有子目录的情况,先定义一个辅助的拷贝函数,它是递归执行的,直到把目录下的所有文件和子目录都拷贝完。 ---- 1.1拷贝目录的递归辅助函数:DoCopyDir function DoCopyDir(sDirName:String; sToDirName:String):Boolean; var hFindFile:Cardinal; t,tfile:String; sCurDir:String[255]; FindFileData:WIN32_FIND_DATA; begin //先保存当前目录 sCurDir:=GetCurrentDir; ChDir(sDirName); hFindFile:=FindFirstFile('*.*',FindFileData); if hFindFile< >INVALID_HANDLE_VALUE then begin if not DirectoryExists(sToDirName) then ForceDirectories(sToDirName); repeat tfile:=FindFileData.cFileName; if (tfile='.') or (tfile='..') then Continue; if FindFileData.dwFileAttributes= FILE_ATTRIBUTE_DIRECTORY then begin t:=sToDirName+'\'+tfile; if not DirectoryExists(t) then ForceDirectories(t); if sDirName[Length(sDirName)]< >'\' then DoCopyDir(sDirName+'\'+tfile,t) else DoCopyDir(sDirName+tfile,sToDirName+tfile); end else begin t:=sToDirName+'\'+tFile; CopyFile(PChar(tfile),PChar(t),True); end; until FindNextFile(hFindFile,FindFileData)=false; FindClose(hFindFile); end else begin ChDir(sCurDir); result:=false; exit; end; //回到原来的目录下 ChDir(sCurDir); result:=true; end;---- 1.2拷贝目录的函数:CopyDir function CopyDir(sDirName:String; sToDirName:string):Boolean; begin if Length(sDirName)< =0 then exit; //拷贝... Result:=DoCopyDir(sDirName,sToDirName); end;
---- 2、删除目录 ---- 删除目录与拷贝目录很类似,但为了能删除位于根目录下的一个空目录,需要在辅助函数中设置一个标志变量,即:如果删除的是空目录,则置bEmptyDir为True,这一句已经用深色框表示了。 ---- 2.1删除目录的递归辅助函数:DoRemoveDir function DoRemoveDir(sDirName:String):Boolean; var hFindFile:Cardinal; tfile:String; sCurDir:String; bEmptyDir:Boolean; FindFileData:WIN32_FIND_DATA; begin //如果删除的是空目录,则置bEmptyDir为True //初始时,bEmptyDir为True bEmptyDir:=True; //先保存当前目录 sCurDir:=GetCurrentDir; SetLength(sCurDir,Length(sCurDir)); ChDir(sDirName); hFindFile:=FindFirstFile('*.*',FindFileData); if hFindFile< >INVALID_HANDLE_VALUE then begin repeat tfile:=FindFileData.cFileName; if (tfile='.') or (tfile='..') then begin bEmptyDir:=bEmptyDir and True; Continue; end; //不是空目录,置bEmptyDir为False bEmptyDir:=False; if FindFileData.dwFileAttributes= FILE_ATTRIBUTE_DIRECTORY then begin if sDirName[Length(sDirName)]< >'\' then DoRemoveDir(sDirName+'\'+tfile) else DoRemoveDir(sDirName+tfile); if not RemoveDirectory(PChar(tfile)) then result:=false else result:=true; end else begin if not DeleteFile(PChar(tfile)) then result:=false else result:=true; end; until FindNextFile(hFindFile,FindFileData)=false; FindClose(hFindFile); end else begin ChDir(sCurDir); result:=false; exit; end; //如果是空目录,则删除该空目录 if bEmptyDir then begin //返回上一级目录 ChDir('..'); //删除空目录 RemoveDirectory(PChar(sDirName)); end; //回到原来的目录下 ChDir(sCurDir); result:=true; end;---- 2.2删除目录的函数:DeleteDir function DeleteDir(sDirName:String):Boolean; begin if Length(sDirName)< =0 then exit; //删除... Result:=DoRemoveDir(sDirName) and RemoveDir(sDirName); end;
---- 3、移动目录 ---- 有了拷贝目录和删除目录的函数,移动目录就变得很简单,只需顺序调用前两个函数即可: function MoveDir(sDirName:String; sToDirName:string):Boolean; begin if CopyDir(sDirName,sToDirName) then if RemoveDir(sDirName) then result:=True else result:=false; end;/////////////////////////////////////////////// procedure TForm1.Button2Click(Sender: TObject); var OpStruc: TSHFileOpStruct; frombuf, tobuf: Array [0..128] of Char; Begin FillChar( frombuf, Sizeof(frombuf), 0 ); FillChar( tobuf, Sizeof(tobuf), 0 ); StrPCopy( frombuf, 'd:\brief\*.*' ); StrPCopy( tobuf, 'd:\temp\brief' ); With OpStruc DO Begin Wnd:= Handle; wFunc:= FO_COPY; pFrom:= @frombuf; pTo:=@tobuf; fFlags:= FOF_NOCONFIRMATION or FOF_RENAMEONCOLLISION; fAnyOperationsAborted:= False; hNameMappings:= Nil; lpszProgressTitle:= Nil; end; ShFileOperation( OpStruc ); end;
uses ShellApi; procedure TTransComMainForm.DeleteTemplete; var myrec: TSHFILEOPSTRUCT; begin with myrec do begin Wnd:= Handle; wFunc:= FO_DELETE; pFrom:= PChar(C:\test\*.*');//路径 pTo:=''; fFlags:= FOF_NOCONFIRMATION or FOF_FILESONLY; fAnyOperationsAborted:= False; hNameMappings:= nil; lpszProgressTitle:= nil; end; SHFileOperation(myrec); end;
{ 返回删除指定目录是否成功 } function DeletePath(mDirName: string): Boolean; var vSearchRec: TSearchRec; vPathName: string; K: Integer; begin Result := True; vPathName := mDirName + '\*.*'; K := FindFirst(vPathName, faAnyFile, vSearchRec); while K = 0 do begin if (vSearchRec.Attr and faDirectory > 0) and (Pos(vSearchRec.Name, '..') = 0) then begin FileSetAttr(mDirName + '\' + vSearchRec.Name, faDirectory); Result := DeletePath(mDirName + '\' + vSearchRec.Name); end else if Pos(vSearchRec.Name, '..') = 0 then begin FileSetAttr(mDirName + '\' + vSearchRec.Name, 0); Result := DeleteFile(PChar(mDirName + '\' + vSearchRec.Name)); end; if not Result then Break; K := FindNext(vSearchRec); end; FindClose(vSearchRec); //Result := RemoveDir(mDirName); end;再发啊...
name : DeleteFiles
PARAMS : const Path, Mask : string; recursive : boolean RETURNS : -
PURPOSE : delete several files with joker.
Optional recursive = search in subdirectories. EXAMPLE : DeleteFiles ('c:\temp\', '*.txt', True);
UPDATES :
===============================================================*}
procedure DeleteFiles (const Path, Mask : string; recursive : boolean);
var
Result : integer;
SearchRec : TSearchRec;
begin
Result := FindFirst(Path + Mask, faAnyFile - faDirectory, SearchRec);
while Result = 0 do
begin
if not DeleteFile (Path + SearchRec.name) then
begin
FileSetAttr (Path + SearchRec.name, 0); { reset all flags }
DeleteFile (Path + SearchRec.name);
end;
Result := FindNext(SearchRec);
end;
FindClose(SearchRec); if not recursive then
exit; Result := FindFirst(Path + '*.*', faDirectory, SearchRec);
while Result = 0 do
begin
if (SearchRec.name <> '.') and (SearchRec.name <> '..') then
begin
FileSetAttr (Path + SearchRec.name, faDirectory);
DeleteFiles (Path + SearchRec.name + '\', Mask, TRUE);
RmDir (Path + SearchRec.name);
end;
Result := FindNext(SearchRec);
end;
FindClose(SearchRec);
end;
var
sr:TsearchRec;
begin
if directoryExists('g:\a') then
begin
if FindFirst('g:\a\*.*',faAnyFile,sr)=0 then
begin repeat
deleteFile('g:\a\'+sr.Name);
until FindNext(sr)<>0;
Findclose(sr);
end
else
CreateDir('g:\a'); end
else
CreateDir('g:\a');
end;
sToDirName:String):Boolean;
var
hFindFile:Cardinal;
t,tfile:String;
sCurDir:String[255];
FindFileData:WIN32_FIND_DATA;
begin
//先保存当前目录
sCurDir:=GetCurrentDir;
ChDir(sDirName);
hFindFile:=FindFirstFile('*.*',FindFileData);
if hFindFile< >INVALID_HANDLE_VALUE then
begin
if not DirectoryExists(sToDirName) then
ForceDirectories(sToDirName);
repeat
tfile:=FindFileData.cFileName;
if (tfile='.') or (tfile='..') then
Continue;
if FindFileData.dwFileAttributes=
FILE_ATTRIBUTE_DIRECTORY then
begin
t:=sToDirName+'\'+tfile;
if not DirectoryExists(t) then
ForceDirectories(t);
if sDirName[Length(sDirName)]< >'\' then
DoCopyDir(sDirName+'\'+tfile,t)
else
DoCopyDir(sDirName+tfile,sToDirName+tfile);
end
else
begin
t:=sToDirName+'\'+tFile;
CopyFile(PChar(tfile),PChar(t),True);
end;
until FindNextFile(hFindFile,FindFileData)=false;
FindClose(hFindFile);
end
else
begin
ChDir(sCurDir);
result:=false;
exit;
end;
//回到原来的目录下
ChDir(sCurDir);
result:=true;
end;---- 1.2拷贝目录的函数:CopyDir function CopyDir(sDirName:String;
sToDirName:string):Boolean;
begin
if Length(sDirName)< =0 then
exit;
//拷贝...
Result:=DoCopyDir(sDirName,sToDirName);
end;
var
hFindFile:Cardinal;
tfile:String;
sCurDir:String;
bEmptyDir:Boolean;
FindFileData:WIN32_FIND_DATA;
begin
//如果删除的是空目录,则置bEmptyDir为True
//初始时,bEmptyDir为True
bEmptyDir:=True;
//先保存当前目录
sCurDir:=GetCurrentDir;
SetLength(sCurDir,Length(sCurDir));
ChDir(sDirName);
hFindFile:=FindFirstFile('*.*',FindFileData);
if hFindFile< >INVALID_HANDLE_VALUE then
begin
repeat
tfile:=FindFileData.cFileName;
if (tfile='.') or (tfile='..') then
begin
bEmptyDir:=bEmptyDir and True;
Continue;
end;
//不是空目录,置bEmptyDir为False
bEmptyDir:=False;
if FindFileData.dwFileAttributes=
FILE_ATTRIBUTE_DIRECTORY then
begin
if sDirName[Length(sDirName)]< >'\' then
DoRemoveDir(sDirName+'\'+tfile)
else
DoRemoveDir(sDirName+tfile);
if not RemoveDirectory(PChar(tfile)) then
result:=false
else
result:=true;
end
else
begin
if not DeleteFile(PChar(tfile)) then
result:=false
else
result:=true;
end;
until FindNextFile(hFindFile,FindFileData)=false;
FindClose(hFindFile);
end
else
begin
ChDir(sCurDir);
result:=false;
exit;
end;
//如果是空目录,则删除该空目录
if bEmptyDir then
begin
//返回上一级目录
ChDir('..');
//删除空目录
RemoveDirectory(PChar(sDirName));
end; //回到原来的目录下
ChDir(sCurDir);
result:=true;
end;---- 2.2删除目录的函数:DeleteDir function DeleteDir(sDirName:String):Boolean;
begin
if Length(sDirName)< =0 then
exit;
//删除...
Result:=DoRemoveDir(sDirName) and RemoveDir(sDirName);
end;
sToDirName:string):Boolean;
begin
if CopyDir(sDirName,sToDirName) then
if RemoveDir(sDirName) then
result:=True
else
result:=false;
end;///////////////////////////////////////////////
procedure TForm1.Button2Click(Sender: TObject);
var
OpStruc: TSHFileOpStruct;
frombuf, tobuf: Array [0..128] of Char;
Begin
FillChar( frombuf, Sizeof(frombuf), 0 );
FillChar( tobuf, Sizeof(tobuf), 0 );
StrPCopy( frombuf, 'd:\brief\*.*' );
StrPCopy( tobuf, 'd:\temp\brief' );
With OpStruc DO Begin
Wnd:= Handle;
wFunc:= FO_COPY;
pFrom:= @frombuf;
pTo:=@tobuf;
fFlags:= FOF_NOCONFIRMATION or FOF_RENAMEONCOLLISION;
fAnyOperationsAborted:= False;
hNameMappings:= Nil;
lpszProgressTitle:= Nil; end;
ShFileOperation( OpStruc );
end;
procedure TTransComMainForm.DeleteTemplete;
var
myrec: TSHFILEOPSTRUCT;
begin
with myrec do
begin
Wnd:= Handle;
wFunc:= FO_DELETE;
pFrom:= PChar(C:\test\*.*');//路径
pTo:='';
fFlags:= FOF_NOCONFIRMATION or FOF_FILESONLY;
fAnyOperationsAborted:= False;
hNameMappings:= nil;
lpszProgressTitle:= nil;
end;
SHFileOperation(myrec);
end;
function DeletePath(mDirName: string): Boolean;
var
vSearchRec: TSearchRec;
vPathName: string;
K: Integer;
begin
Result := True;
vPathName := mDirName + '\*.*';
K := FindFirst(vPathName, faAnyFile, vSearchRec);
while K = 0 do
begin
if (vSearchRec.Attr and faDirectory > 0) and
(Pos(vSearchRec.Name, '..') = 0) then begin
FileSetAttr(mDirName + '\' + vSearchRec.Name, faDirectory);
Result := DeletePath(mDirName + '\' + vSearchRec.Name);
end else if Pos(vSearchRec.Name, '..') = 0 then begin
FileSetAttr(mDirName + '\' + vSearchRec.Name, 0);
Result := DeleteFile(PChar(mDirName + '\' + vSearchRec.Name));
end;
if not Result then Break;
K := FindNext(vSearchRec);
end;
FindClose(vSearchRec);
//Result := RemoveDir(mDirName);
end;再发啊...