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unit UPlatformWindows;
interface
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
{$I switches.inc}
uses Classes, UPlatform;
type
TPlatformWindows = class(TPlatform)
public
Function DirectoryFindFiles(Dir, Filter : WideString; ReturnAllSubDirs : Boolean) : TDirectoryEntryArray; override;
function TerminateIfAlreadyRunning(var WndTitle : String) : Boolean; override;
end;
implementation
uses SysUtils, Windows;
type
TSearchRecW = record
Time: Integer;
Size: Integer;
Attr: Integer;
Name: WideString;
ExcludeAttr: Integer;
FindHandle: THandle;
FindData: TWin32FindDataW;
end;
function FindFirstW(const Path: WideString; Attr: Integer; var F: TSearchRecW): Integer; forward;
function FindNextW(var F: TSearchRecW): Integer; forward;
procedure FindCloseW(var F: TSearchRecW); forward;
function FindMatchingFileW(var F: TSearchRecW): Integer; forward;
function DirectoryExistsW(const Directory: widestring): Boolean; forward;
function FindFirstW(const Path: widestring; Attr: Integer; var F: TSearchRecW): Integer;
const
faSpecial = faHidden or faSysFile or faVolumeID or faDirectory;
begin
F.ExcludeAttr := not Attr and faSpecial;
F.FindHandle := FindFirstFileW(PWideChar(Path), F.FindData);
if F.FindHandle <> INVALID_HANDLE_VALUE then
begin
Result := FindMatchingFileW(F);
if Result <> 0 then FindCloseW(F);
end else
Result := GetLastError;
end;
function FindNextW(var F: TSearchRecW): Integer;
begin
if FindNextFileW(F.FindHandle, F.FindData) then
Result := FindMatchingFileW(F)
else
Result := GetLastError;
end;
procedure FindCloseW(var F: TSearchRecW);
begin
if F.FindHandle <> INVALID_HANDLE_VALUE then
begin
Windows.FindClose(F.FindHandle);
F.FindHandle := INVALID_HANDLE_VALUE;
end;
end;
function FindMatchingFileW(var F: TSearchRecW): Integer;
var
LocalFileTime: TFileTime;
begin
with F do
begin
while FindData.dwFileAttributes and ExcludeAttr <> 0 do
if not FindNextFileW(FindHandle, FindData) then
begin
Result := GetLastError;
Exit;
end;
FileTimeToLocalFileTime(FindData.ftLastWriteTime, LocalFileTime);
FileTimeToDosDateTime(LocalFileTime, LongRec(Time).Hi, LongRec(Time).Lo);
Size := FindData.nFileSizeLow;
Attr := FindData.dwFileAttributes;
Name := FindData.cFileName;
end;
Result := 0;
end;
function DirectoryExistsW(const Directory: widestring): Boolean;
var
Code: Integer;
begin
Code := GetFileAttributesW(PWideChar(Directory));
Result := (Code <> -1) and (FILE_ATTRIBUTE_DIRECTORY and Code <> 0);
end;
//------------------------------
//Start more than One Time Prevention
//------------------------------
function TPlatformWindows.TerminateIfAlreadyRunning(var WndTitle : String) : Boolean;
var
hWnd: THandle;
I: Integer;
begin
Result := false;
hWnd:= FindWindow(nil, PChar(WndTitle));
//Programm already started
if (hWnd <> 0) then
begin
I := Messagebox(0, PChar('Another Instance of Ultrastar is already running. Continue ?'), PChar(WndTitle), MB_ICONWARNING or MB_YESNO);
if (I = IDYes) then
begin
I := 1;
repeat
Inc(I);
hWnd := FindWindow(nil, PChar(WndTitle + ' Instance ' + InttoStr(I)));
until (hWnd = 0);
WndTitle := WndTitle + ' Instance ' + InttoStr(I);
end
else
Result := true;
end;
end;
Function TPlatformWindows.DirectoryFindFiles(Dir, Filter : WideString; ReturnAllSubDirs : Boolean) : TDirectoryEntryArray;
var
i : Integer;
SR : TSearchRecW;
lAttrib : Integer;
begin
i := 0;
Filter := LowerCase(Filter);
if FindFirstW(Dir + '*', faAnyFile or faDirectory, SR) = 0 then
repeat
if (SR.Name <> '.') and (SR.Name <> '..') then
begin
lAttrib := FileGetAttr(Dir + SR.name);
if ReturnAllSubDirs and ((lAttrib and faDirectory) <> 0) then
begin
SetLength( Result, i + 1);
Result[i].Name := SR.name;
Result[i].IsDirectory := true;
Result[i].IsFile := false;
i := i + 1;
end
else if (Length(Filter) = 0) or (Pos( Filter, LowerCase(SR.Name)) > 0) then
begin
SetLength( Result, i + 1);
Result[i].Name := SR.Name;
Result[i].IsDirectory := false;
Result[i].IsFile := true;
i := i + 1;
end;
end;
until FindNextW(SR) <> 0;
FindCloseW(SR);
end;
end.
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