Delphi 文件操作的封装

Unit Name: FileOper

Author:    liubin
Date:      2010-12-07
Purpose:   用于文件及文件夹操作
History:
-----------------------------------------------------------------------------}
unit FileOper;

interface
uses Windows,shellapi,SysUtils;

type
TFileOper =class
    public
      class function WinErasefile(Owner: Integer; WichFiles: string; SendToRecycleBin, Confirm: Boolean): Boolean;
      class function WinErasepath(Owner: Integer; WichFiles: string; SendToRecycleBin, Confirm: Boolean): Boolean;
      class function WinMovepath(Owner:Integer;FromFile, Tofile:string;ReNameOnCollision, Confirm:Boolean):Boolean;
      class function WinMovefile(Owner:Integer;FromFile, Tofile:string;ReNameOnCollision, Confirm:Boolean):Boolean;
      class function WinCopypath(Owner: Integer; FromFile, Tofile: string;ReNameOnCollision, Confirm: Boolean): Boolean;
      class function WinCopyfile(Owner: Integer; FromFile, Tofile: string;ReNameOnCollision, Confirm: Boolean): Boolean;
      class function IsFileInUse(fName: string): boolean;
end;

implementation

class function TFileOper.IsFileInUse(fName: string): boolean;
var
HFileRes: HFILE;
begin
   Result := false;
   if not FileExists(fName) then //如果文件不存在
     exit;
   HFileRes := CreateFile(pchar(fName), GENERIC_READ or GENERIC_WRITE,
     0 {this is the trick!}, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
   Result := (HFileRes = INVALID_HANDLE_VALUE);
   if not Result then
     CloseHandle(HFileRes);
end;
class function TFileOper.WinErasefile(Owner: Integer; WichFiles: string; SendToRecycleBin, Confirm: Boolean): Boolean;
//用于将文件直接删除或移动到回收站
var
Struct : TSHFileOpStructA;
begin
FillChar(Struct, SizeOf(Struct), 0);
While pos(';', WichFiles)>0 do
WichFiles[pos(';', WichFiles)] := #0;
WichFiles := WichFiles + #0#0;
with Struct do
begin
wnd := Owner;
wFunc := FO_Delete;
pFrom := PChar(WichFiles);
pTo := nil;
If not Confirm then fFlags := FOF_NOCONFIRMATION;
If SendToRecycleBin then fFLags := fFlags or FOF_ALLOWUNDO or FOF_FILESONLY
else fFlags := fFlags or 0 or FOF_FILESONLY;
hNameMappings := nil;
lpszProgressTitle := nil;
end;
result := (SHFileOperationA(Struct)=0) and (not Struct.fAnyOperationsAborted);
end;

class function TFileOper.WinErasepath(Owner: Integer; WichFiles: string; SendToRecycleBin, Confirm: Boolean): Boolean;
//用于将目录直接删除或移动到回收站
var
Struct : TSHFileOpStructA;
begin
FillChar(Struct, SizeOf(Struct), 0);
While pos(';', WichFiles)>0 do
WichFiles[pos(';', WichFiles)] := #0;
WichFiles := WichFiles + #0#0;
with Struct do
begin
wnd := Owner;
wFunc := FO_Delete;
pFrom := PChar(WichFiles);
pTo := nil;
If not Confirm then fFlags := FOF_NOCONFIRMATION;
If SendToRecycleBin then fFLags := fFlags or FOF_ALLOWUNDO
else fFlags := fFlags or 0 or FOF_FILESONLY;
hNameMappings := nil;
lpszProgressTitle := nil;
end;
result := (SHFileOperationA(Struct)=0) and (not Struct.fAnyOperationsAborted);
end;

class function TFileOper.WinMovepath(Owner:Integer;FromFile, Tofile:string;ReNameOnCollision, Confirm:Boolean):Boolean;
//用于将目录进行移动
var
Struct : TSHFileOpStructA;
MultDest: Boolean;
begin
FillChar(Struct, SizeOf(Struct), 0);
MultDest := pos(';', ToFile)>0;
While pos(';', FromFile)>0 do
FromFile[pos(';', FromFile)] := #0;
While pos(';', ToFile)>0 do
ToFile[pos(';', ToFile)] := #0;
FromFile := FromFile + #0#0;
ToFile := ToFile + #0#0;
with Struct do
begin
wnd := Owner;
wFunc := FO_Move;
pFrom := PChar(FromFile);
pTo := PChar(ToFile);
fFlags := FOF_ALLOWUNDO;
If MultDest then fFLags := fFlags or FOF_MULTIDESTFILES;
If ReNameOnCollision then fFLags := fFlags or FOF_RENameONCOLLISION;
If Confirm then fFLags := fFlags or FOF_NOCONFIRMATION;
hNameMappings := nil;
lpszProgressTitle := nil;
end;
result := (SHFileOperationA(Struct)=0) and (not Struct.fAnyOperationsAborted);
end;

class function TFileOper.WinMovefile(Owner:Integer;FromFile, Tofile:string;ReNameOnCollision, Confirm:Boolean):Boolean;
//用于将文件进行移动www.zzzyk.com
var
Struct : TSHFileOpStructA;
MultDest: Boolean;
begin
FillChar(Struct, SizeOf(Struct), 0);
MultDest := pos(';', ToFile)>0;
While pos(';', FromFile)>0 do
FromFile[pos(';', FromFile)] := #0;
While pos(';', ToFile)>0 do
ToFile[pos(';', ToFile)] := #0;
FromFile := FromFile + #0#0;
ToFile := ToFile + #0#0;
with Struct do
begin
wnd := Owner;
wFunc := FO_Move;
pFrom := PChar(FromFile);
pTo := PChar(ToFile);
fFlags := FOF_ALLOWUNDO or FOF_FILESONLY;
If MultDest then fFLags := fFlags or FOF_MULTIDESTFILES;
If ReNameOnCollision then fFLags := fFlags or FOF_RENameONCOLLISION;
If Confirm then fFLags := fFlags or FOF_NOCONFIRMATION;
hNameMappings := nil;
lpszProgressTitle := nil;
end;
result := (SHFileOperationA(Struct)=0) and (not Struct.fAnyOperationsAborted);
end;

class function TFileOper.WinCopypath(Owner: Integer; FromFile, Tofile: string;ReNameOnCollision, Confirm: Boolean): Boolean;
//拷贝目录 www.zzzyk.com
var
Struct : TSHFileOpStructA;
MultDest: Boolean;
begin
FillChar(Struct, SizeOf(Struct), 0); MultDest := pos(';', ToFile)>0;
While pos(';', FromFile)>0 do
FromFile[pos(';', FromFile)] := #0;
While pos(';', ToFile)>0 do
ToFile[pos(';', ToFile)] := #0;
FromFile := FromFile + #0#0;
ToFile := ToFile + #0#0;
with Struct do
begin
wnd := Owner;
wFunc := FO_Copy;
pFrom := PChar(FromFile);
pTo := PChar(ToFile);
fFlags := FOF_ALLOWUNDO;
If MultDest then
fFLags := fFlags or FOF_MULTIDESTFILES;
If ReNameOnCollision then
fFLags := fFlags or FOF_RENameONCOLLISION;
If not Confirm then
begin
fFLags := fFlags or FOF_NOCONFIRMATION or FOF_NOCONFIRMMKDIR;
end;
hNameMappings := nil;
lpszProgressTitle := ni

补充：软件开发 , Delphi ,