uGenUtils by steve10120

Post date: Sep 14, 2010 7:50:29 PM

This extremely useful unit, written by steve10120, contains many functions which I repeatedly use in my applications. I now add it to most of my new projects.

Particularly exciting functions included the api replacements for lstrcpyA, lstrcpyW and GetProcAddress and the strict unicode and ascii rules.

unit uGenUtils;

{steve10120@ic0de.org}

interface

uses Windows;

function Assigned(pInput:Pointer):Boolean;

function ValidHandle(dwValue:DWORD):Boolean;

function ValidSize(dwValue:DWORD):Boolean;

function AllocMemory(var pOutput:Pointer; pBase:Pointer; dwSize:DWORD; dwProtect:DWORD):Boolean;

function FreeMemory(pInput:Pointer):Boolean;

function ReallocMemory(var pOutput:Pointer; pInput:Pointer; dwOldSize:DWORD; dwNewSize:DWORD):Boolean;

procedure FillChar(pInput:Pointer; cFill:Char; dwSize:DWORD);

function FileToStr(szFilePath:string; var szOutput:string):Boolean;

function FileToPtr(szFilePath:string; var pOutput:Pointer; var dwSize:DWORD):Boolean;

function StrToFile(szFilePath:string; dwPosition:DWORD; szInput:string):Boolean;

function PtrToFile(szFilePath:string; dwPosition:DWORD; pInput:Pointer; dwSize:DWORD; bFreeWhenDone:Boolean):Boolean;

function StrToPtr(szInput:string):Pointer;

function PtrToStr(pInput:Pointer; dwSize:DWORD):string;

function SwapBytes(dwValue:DWORD):DWORD;

function ASCIIToUNICODE(szInput:string):WideString;

function UNICODEToASCII(szInput:WideString):string;

function LowerCaseA(szInput:string):string;

function LowerCaseW(szInput:WideString):WideString;

function UpperCaseA(szInput:string):string;

function UpperCaseW(szInput:WideString):WideString;

function ReverseStringA(szInput:string):string;

function ReverseStringW(szInput:WideString):WideString;

function IntToStr(dwValue:DWORD):string;

function StrToInt(szInput:string):DWORD;

function UserNameA():string;

function UserNameW():WideString;

function ComputerNameA():string;

function ComputerNameW():WideString;

function WindowsPathA():string;

function WindowsPathW():WideString;

function SystemPathA():string;

function SystemPathW():WideString;

function TempPathA():string;

function TempPathW():WideString;

function WindowsVersion():string;

function Is64BitOS():Boolean;

function CopyA(szInput:PChar; dwIndex:DWORD; dwSize:DWORD):PChar;

function CopyW(szInput:PWideChar; dwIndex:DWORD; dwSize:DWORD):PWideChar;

function LeftStr(szInput:string; dwSize:DWORD):string;

function RightStr(szInput:string; dwSize:DWORD):string;

function MidStr(szInput:string; dwIndex:DWORD; dwSize:DWORD):string;

function KeyToStr(hRoot:HKEY; szSubKey:string; szValue:string; var szOutput:string):Boolean;

function StrToKey(hRoot:HKEY; szSubKey:string; szValue:string; szInput:string):Boolean;

procedure CopyMemory(Destination:Pointer; Source:Pointer; dwSize:DWORD);

function IsValidPE(szFilePath:string):Boolean;

function LongPath(szInput:string):string;

function ShortPath(szInput:string):string;

function UpdateResources(szFilePath:string; szType:PChar; szName:PChar; wLang:WORD; bDeleteExisting:Boolean; szInput:string):Boolean;

function GetResource(hModule:DWORD; szType:PChar; szName:PChar; var pOutput:Pointer; var dwSize:DWORD):Boolean;

function FileExists(szFilePath:string):Boolean;

procedure ShowMessageA(szMessage:string);

procedure ShowMessageW(szMessage:WideString);

procedure ShowErrorA(szMessage:string);

procedure ShowErrorW(szMessage:WideString);

function FileTypeA(szFilePath:string):string;

function FileTypeW(szFilePath:WideString):WideString;

function DefaultBrowser():string;

function PosChar(Delimiter:Char; szInput:string):DWORD;

procedure lstrcpyA(szOutput:PChar; szInput:PChar);

procedure lstrcpyW(szOutput:PWideChar; szInput:PWideChar);

function MyGetProcAddress(hModule:DWORD; szFuncName:PChar):Pointer;

function MapFile(szFilePath:string; szMapName:string; var pMapped:Pointer; var dwSize:DWORD):Boolean;

function UnMapFile(pMapped:Pointer):Boolean;

function GetMyHandle():DWORD;

function Align(dwValue:DWORD; dwAlign:DWORD):DWORD;

const

  cSlashA:            string = '\';

  cSlashW:            WideString = '\';

  SM_SERVERR2:        DWORD = 89;

  VER_NT_WORKSTATION: DWORD = 1;

  SHGFI_TYPENAME:     DWORD = $400;

  szInfoA:            PChar = 'Information';

  szInfoW:            PWideChar = 'Information';

  szErrorA:           PChar = 'Error';

  szErrorW:           PWideChar = 'Error';

  szNull:             string = '';

  szEXE:              string = '.exe';

type

  OSVERSIONINFOEX = packed record

    dwOSVersionInfoSize: DWORD;

    dwMajorVersion: DWORD;

    dwMinorVersion: DWORD;

    dwBuildNumber: DWORD;

    dwPlatformId: DWORD;

    szCSDVersion: array[0..127] of Char;

    wServicePackMajor: WORD;

    wServicePackMinor: WORD;

    wSuiteMask: WORD;

    wProductType: BYTE;

    wReserved: BYTE;

  end;

  TOSVersionInfoEx = OSVERSIONINFOEX;

  POSVersionInfoEx = ^TOSVersionInfoEx;

type

  PSHFileInfoA = ^TSHFileInfoA;

  PSHFileInfoW = ^TSHFileInfoW;

  PSHFileInfo = PSHFileInfoA;

  {$EXTERNALSYM _SHFILEINFOA}

  _SHFILEINFOA = record

    hIcon: HICON;                      { out: icon }

    iIcon: Integer;                    { out: icon index }

    dwAttributes: DWORD;               { out: SFGAO_ flags }

    szDisplayName: array [0..MAX_PATH-1] of  AnsiChar; { out: display name (or path) }

    szTypeName: array [0..79] of AnsiChar;             { out: type name }

  end;

  _SHFILEINFOW = record

    hIcon: HICON;                      { out: icon }

    iIcon: Integer;                    { out: icon index }

    dwAttributes: DWORD;               { out: SFGAO_ flags }

    szDisplayName: array [0..MAX_PATH-1] of  WideChar; { out: display name (or path) }

    szTypeName: array [0..79] of WideChar;             { out: type name }

  end;

  _SHFILEINFO = _SHFILEINFOA;

  TSHFileInfoA = _SHFILEINFOA;

  TSHFileInfoW = _SHFILEINFOW;

  TSHFileInfo = TSHFileInfoA;

  SHFILEINFOA = _SHFILEINFOA;

  SHFILEINFOW = _SHFILEINFOW;

  SHFILEINFO = SHFILEINFOA;

const

  szkernel32 = 'kernel32.dll';

  shell32    = 'shell32.dll';

  ntdll      = 'ntdll.dll';

function GetVersionExA(var lpVersionInformation: TOSVersionInfoEx): BOOL; stdcall; external szkernel32;

function IsWow64Process(hProcess:DWORD; var bIsWow64:Boolean):Boolean; stdcall; external szkernel32;

function GetLongPathNameA(lpszShortPath:PChar; lpszLongPath:PChar; dwSize:DWORD):DWORD; stdcall; external kernel32

function SHGetFileInfoA(pszPath: PAnsiChar; dwFileAttributes: DWORD; var psfi: TSHFileInfoA; cbFileInfo, uFlags: UINT): DWORD; stdcall; external shell32

function SHGetFileInfoW(pszPath: PWideChar; dwFileAttributes: DWORD; var psfi: TSHFileInfoW; cbFileInfo, uFlags: UINT): DWORD; stdcall; external shell32

procedure RtlFillMemory(pInput:Pointer; dwSize:DWORD; bFill:Byte); stdcall; external ntdll;

implementation

function Assigned(pInput:Pointer):Boolean;

begin

  Result := FALSE;

  if pInput <> nil then

    Result := TRUE;

end;

function ValidHandle(dwValue:DWORD):Boolean;

begin

  Result := FALSE;

  if dwValue <> INVALID_HANDLE_VALUE then

    Result := TRUE;

end;

function ValidSize(dwValue:DWORD):Boolean;

begin

  Result := FALSE;

  if dwValue > 0 then

    Result := TRUE;

end;

function AllocMemory(var pOutput:Pointer; pBase:Pointer; dwSize:DWORD; dwProtect:DWORD):Boolean;

begin

  Result := FALSE;

  pOutput := VirtualAlloc(pBase, dwSize, MEM_COMMIT, dwProtect);

  if Assigned(pOutput) then

    Result := TRUE;

end;

function FreeMemory(pInput:Pointer):Boolean;

begin

  Result := FALSE;

  if VirtualFree(pInput, 0, MEM_RELEASE) then

    Result := TRUE;

end;

function ReallocMemory(var pOutput:Pointer; pInput:Pointer; dwOldSize:DWORD; dwNewSize:DWORD):Boolean;

begin

  Result := FALSE;

  if AllocMemory(pOutput, nil, dwNewSize, PAGE_READWRITE) then

  begin

    CopyMemory(pOutput, pInput, dwOldSize);

    FreeMemory(pInput);

    Result := TRUE;

  end;

end;

procedure FillChar(pInput:Pointer; cFill:Char; dwSize:DWORD);

begin

  RtlFillMemory(pInput, dwSize, Byte(cFill));

end;

function FileToStr(szFilePath:string; var szOutput:string):Boolean;

var

  hFile:  DWORD;

  dwSize: DWORD;

  dwRead: DWORD;

begin

  Result := FALSE;

  hFile := CreateFile(PChar(szFilePath), GENERIC_READ, FILE_SHARE_READ, nil, OPEN_EXISTING, 0, 0);

  if ValidHandle(hFile) then

  begin

    dwSize := GetFileSize(hFile, nil);

    if ValidSize(dwSize) then

    begin

      SetLength(szOutput, dwSize);

      SetFilePointer(hFile, 0, nil, FILE_BEGIN);

      ReadFile(hFile, szOutput[1], dwSize, dwRead, nil);

      if dwSize = dwRead then

        Result := TRUE;

    end;

    CloseHandle(hFile);

  end;

end;

function FileToPtr(szFilePath:string; var pOutput:Pointer; var dwSize:DWORD):Boolean;

var

  hFile:  DWORD;

  dwRead: DWORD;

begin

  Result := FALSE;

  hFile := CreateFile(PChar(szFilePath), GENERIC_READ, FILE_SHARE_READ, nil, OPEN_EXISTING, 0, 0);

  if ValidHandle(hFile) then

  begin

    dwSize := GetFileSize(hFile, nil);

    if ValidSize(dwSize) then

    begin

      if AllocMemory(pOutput, nil, dwSize, PAGE_READWRITE) then

      begin

        SetFilePointer(hFile, 0, nil, FILE_BEGIN);

        ReadFile(hFile, pOutput^, dwSize, dwRead, nil);

        if dwSize = dwRead then

          Result := TRUE;

      end;

    end;

    CloseHandle(hFile);

  end;

end;

function StrToFile(szFilePath:string; dwPosition:DWORD; szInput:string):Boolean;

var

  hFile:      DWORD;

  dwSize:     DWORD;

  dwWritten:  DWORD;

begin

  Result := FALSE;

  hFile := CreateFile(PChar(szFilePath), GENERIC_WRITE, FILE_SHARE_WRITE, nil, CREATE_NEW, 0, 0);

  if ValidHandle(hFile) then

  begin

    dwSize := Length(szInput);

    if ValidSize(dwSize) then

    begin

      SetFilePointer(hFile, dwPosition, nil, FILE_BEGIN);

      WriteFile(hFile, szInput[1], dwSize, dwWritten, nil);

      if dwWritten = dwSize then

        Result := TRUE;

    end;

    CloseHandle(hFile);

  end;

end;

function PtrToFile(szFilePath:string; dwPosition:DWORD; pInput:Pointer; dwSize:DWORD; bFreeWhenDone:Boolean):Boolean;

var

  hFile:      DWORD;

  dwWritten:  DWORD;

begin

  Result := FALSE;

  hFile := CreateFile(PChar(szFilePath), GENERIC_WRITE, FILE_SHARE_WRITE, nil, CREATE_NEW, 0, 0);

  if ValidHandle(hFile) then

  begin

    if ValidSize(dwSize) then

    begin

      SetFilePointer(hFile, dwPosition, nil, FILE_BEGIN);

      WriteFile(hFile, pInput^, dwSize, dwWritten, nil);

      if dwWritten = dwSize then

        Result := TRUE;

      if bFreeWhenDone then

        FreeMemory(pInput);

    end;

    CloseHandle(hFile);

  end;

end;

function StrToPtr(szInput:string):Pointer;

var

  dwSize: DWORD;

begin

  Result := nil;

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    if AllocMemory(Result, nil, dwSize, PAGE_READWRITE) then

      CopyMemory(Result, @szInput[1], Length(szInput));

  end;

end;

function PtrToStr(pInput:Pointer; dwSize:DWORD):string;

begin

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    CopyMemory(@Result[1], pInput, dwSize);

  end;

end;

function SwapBytes(dwValue:DWORD):DWORD;

asm

  BSWAP EAX

end;

function ASCIIToUNICODE(szInput:string):WideString;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    for i := 1 to dwSize do

      Result := Result + szInput[i];

  end;

end;

function UNICODEToASCII(szInput:WideString):string;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    for i := 1 to dwSize do

      Result := Result + szInput[i]

  end;

end;

function LowerCaseA(szInput:string):string;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    for i := 1 to dwSize do

      Result[i] := Char(CharLowerA(PChar(szInput[i])));

  end;

end;

function LowerCaseW(szInput:WideString):WideString;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    for i := 1 to dwSize do

      Result[i] := WideChar(CharLowerW(PWideChar(szInput[i])));

  end;

end;

function UpperCaseA(szInput:string):string;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    for i := 1 to dwSize do

      Result[i] := Char(CharUpperA(PChar(szInput[i])));

  end;

end;

function UpperCaseW(szInput:WideString):WideString;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    for i := 1 to dwSize do

      Result[i] := WideChar(CharUpperW(PWideChar(szInput[i])));

  end;

end;

function ReverseStringA(szInput:string):string;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    for i := 1 to dwSize do

      Result := Result + szInput[dwSize - i + 1]

  end;

end;

function ReverseStringW(szInput:WideString):WideString;

var

  i:      DWORD;

  dwSize: DWORD;

begin

  dwSize := Length(szInput);

  if ValidSize(dwSize) then

  begin

    for i := 1 to dwSize do

      Result := Result + szInput[dwSize - i + 1]

  end;

end;

function IntToStr(dwValue:DWORD):string;

begin

  Str(dwValue, Result);

end;

function StrToInt(szInput:string):DWORD;

begin

  Val(szInput, Result, Result);

end;

function UserNameA():string;

var

  dwSize: DWORD;

begin

  dwSize := 16;

  SetLength(Result, dwSize);

  GetUserNameA(PChar(Result), dwSize);

end;

function UserNameW():WideString;

var

  dwSize: DWORD;

begin

  dwSize := 16;

  SetLength(Result, dwSize);

  GetUserNameW(PWideChar(Result), dwSize);

end;

function ComputerNameA():string;

var

  dwSize:  DWORD;

begin

  dwSize := 16;

  SetLength(Result, dwSize);

  GetComputerNameA(PChar(Result), dwSize);

end;

function ComputerNameW():WideString;

var

  dwSize:  DWORD;

begin

  dwSize := 16;

  SetLength(Result, dwSize);

  GetComputerNameW(PWideChar(Result), dwSize);

end;

function WindowsPathA():string;

var

  dwSize: DWORD;

begin

  dwSize := GetWindowsDirectoryA(nil, 0);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetWindowsDirectoryA(PChar(Result), dwSize);

    if CopyA(PChar(Result), dwSize - 1, 1) <> cSlashA then

      lstrcatA(PChar(Result), PChar(cSlashA));

  end;

end;

function WindowsPathW():WideString;

var

  dwSize: DWORD;

begin

  dwSize := GetWindowsDirectoryW(nil, 0);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetWindowsDirectoryW(PWideChar(Result), dwSize);

    if CopyW(PWideChar(Result), dwSize - 1, 1) <> cSlashW then

      lstrcatW(PWideChar(Result), PWideChar(cSlashW));

  end;

end;

function SystemPathA():string;

var

  dwSize: DWORD;

begin

  dwSize := GetSystemDirectoryA(nil, 0);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetSystemDirectoryA(PChar(Result), dwSize);

    if CopyA(PChar(Result), dwSize - 1, 1) <> cSlashA then

      lstrcatA(PChar(Result), PChar(cSlashA));

  end;

end;

function SystemPathW():WideString;

var

  dwSize: DWORD;

begin

  dwSize := GetSystemDirectoryW(nil, 0);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetSystemDirectoryW(PWideChar(Result), dwSize);

    if CopyW(PWideChar(Result), dwSize - 1, 1) <> cSlashW then

      lstrcatW(PWideChar(Result), PWideChar(cSlashW));

  end;

end;

function TempPathA():string;

var

  dwSize: DWORD;

begin

  dwSize := GetTempPathA(0, nil);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetTempPathA(dwSize, PChar(Result));

    Result := PChar(Result);

  end;

end;

function TempPathW():WideString;

var

  dwSize: DWORD;

begin

  dwSize := GetTempPathW(0, nil);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetTempPathW(dwSize, PWideChar(Result));

  end;

end;

function WindowsVersion():string;

var

  OSINFO: TOSVersionInfoEx;

begin

  OSINFO.dwOSVersionInfoSize := SizeOf(OSINFO);

  if GetVersionExA(OSINFO) then

  begin

    if (OSINFO.dwMajorVersion = 5) and (OSINFO.dwMinorVersion = 0) then

      Result := 'Windows 2000'

    else if (OSINFO.dwMajorVersion = 5) and (OSINFO.dwMinorVersion = 1) then

      Result := 'Windows XP'

    else if (OSINFO.dwMajorVersion = 5) and (OSINFO.dwMinorVersion = 2) and (GetSystemMetrics(SM_SERVERR2) = 0) then

      Result := 'Windows Server 2003'

    else if (OSINFO.dwMajorVersion = 5) and (OSINFO.dwMinorVersion = 2) and (GetSystemMetrics(SM_SERVERR2) <> 0) then

      Result := 'Windows Server 2003 R2'

    else if (OSINFO.dwMajorVersion = 6) and (OSINFO.dwMinorVersion = 0) and (OSINFO.wProductType = VER_NT_WORKSTATION) then

      Result := 'Windows Vista'

    else if (OSINFO.dwMajorVersion = 6) and (OSINFO.dwMinorVersion = 0) and (OSINFO.wProductType <> VER_NT_WORKSTATION) then

      Result := 'Windows Server 2008'

    else if (OSINFO.dwMajorVersion = 6) and (OSINFO.dwMinorVersion = 1) and (OSINFO.wProductType <> VER_NT_WORKSTATION) then

      Result := 'Windows Server 2008 R2'

    else if (OSINFO.dwMajorVersion = 6) and (OSINFO.dwMinorVersion = 1) and (OSINFO.wProductType = VER_NT_WORKSTATION) then

      Result := 'Windows 7'

    else

      Result := 'Unknown';

  end;

end;

function Is64BitOS():Boolean;

begin

  IsWow64Process(INVALID_HANDLE_VALUE, Result);

end;

function CopyA(szInput:PChar; dwIndex:DWORD; dwSize:DWORD):PChar;

asm

  PUSH EDI

  PUSH ESI

  PUSH ECX

  PUSH EAX

  MOV ESI, szInput

  ADD ESI, dwIndex

  DEC ESI

  PUSH ECX

  PUSH PAGE_READWRITE

  PUSH MEM_COMMIT

  PUSH dwSize

  PUSH 0

  CALL VirtualAlloc

  POP ECX

  MOV EDI, EAX

  PUSH ECX

  REP MOVSB

  POP ECX

  SUB EDI, ECX

  POP EAX

  MOV EAX, EDI

  POP ECX

  POP ESI

  POP EDI

end;

function CopyW(szInput:PWideChar; dwIndex:DWORD; dwSize:DWORD):PWideChar;

asm

  PUSH EDI

  PUSH ESI

  PUSH ECX

  PUSH EAX

  MOV ESI, szInput

  ADD ESI, dwIndex

  DEC ESI

  ADD ECX, 2

  PUSH ECX

  PUSH PAGE_READWRITE

  PUSH MEM_COMMIT

  PUSH dwSize

  PUSH 0

  CALL VirtualAlloc

  POP ECX

  MOV EDI, EAX

  PUSH ECX

  REP MOVSB

  POP ECX

  SUB EDI, ECX

  POP EAX

  MOV EAX, EDI

  POP ECX

  POP ESI

  POP EDI

end;

function LeftStr(szInput:string; dwSize:DWORD):string;

begin

  Result := CopyA(PChar(szInput), 1, dwSize);

end;

function RightStr(szInput:string; dwSize:DWORD):string;

var

  dwLen:  DWORD;

begin

  dwLen := Length(szInput);

  Result := CopyA(PChar(szInput), dwLen - dwSize + 1, dwSize);

end;

function MidStr(szInput:string; dwIndex:DWORD; dwSize:DWORD):string;

begin

  Result := CopyA(PChar(szInput), dwIndex, dwSize);

end;

function KeyToStr(hRoot:HKEY; szSubKey:string; szValue:string; var szOutput:string):Boolean;

var

  hOpen:  HKEY;

  wSize:  Integer;

begin

  Result := FALSE;

  if RegOpenKey(hRoot, nil, hOpen) = 0 then

  begin

    wSize := 1024;

    SetLength(szOutput, 1024);

    if RegQueryValue(hOpen, PChar(szSubKey), PChar(szOutput), wSize) = 0 then

    begin

      szOutput := PChar(szOutput);

      Result := TRUE;

    end;

    RegCloseKey(hOpen);

  end;

end;

function StrToKey(hRoot:HKEY; szSubKey:string; szValue:string; szInput:string):Boolean;

var

  hOpen: HKEY;

begin

  Result := FALSE;

  if RegCreateKeyEx(hRoot, PChar(szSubKey), 0, nil, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, nil, hOpen, nil) = 0 then

  begin

    if RegSetValueEx(hOpen, PChar(szValue), 0, REG_SZ, PChar(szInput), Length(szInput)) = 0 then

      Result := TRUE;

    RegCloseKey(hOpen);

  end;

end;

procedure CopyMemory(Destination:Pointer; Source:Pointer; dwSize:DWORD);

asm

  PUSH EDI

  PUSH ESI

  PUSH ECX

  MOV EDI, Destination

  MOV ESI, Source

  REP MOVSB

  POP ECX

  POP ESI

  POP EDI

end;

function IsValidPE(szFilePath:string):Boolean;

var

  hFile:  DWORD;

  dwRead: DWORD;

  IDH:    TImageDosHeader;

  INH:    TImageNtHeaders;

begin

  Result := FALSE;

  hFile := CreateFile(PChar(szFilePath), GENERIC_READ, FILE_SHARE_READ, nil, OPEN_EXISTING, 0, 0);

  if ValidHandle(hFile) then

  begin

    SetFilePointer(hFile, 0, nil, FILE_BEGIN);

    ReadFile(hFile, IDH, 64, dwRead, nil);

    if IDH.e_magic = IMAGE_DOS_SIGNATURE then

    begin

      SetFilePointer(hFile, IDH._lfanew, nil, FILE_BEGIN);

      ReadFile(hFile, INH, 248, dwRead, nil);

      if INH.Signature = IMAGE_NT_SIGNATURE then

        Result := TRUE;

    end;

    CloseHandle(hFile);

  end;

end;

function LongPath(szInput:string):string;

var

  dwSize: DWORD;

begin

  dwSize := GetLongPathNameA(PChar(szInput), nil, 0);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetLongPathNameA(PChar(szInput), PChar(Result), dwSize);

  end;

end;

function ShortPath(szInput:string):string;

var

  dwSize: DWORD;

begin

  dwSize := GetShortPathName(PChar(szInput), nil, 0);

  if ValidSize(dwSize) then

  begin

    SetLength(Result, dwSize);

    GetShortPathName(PChar(szInput), PChar(Result), dwSize);

  end;

end;

function UpdateResources(szFilePath:string; szType:PChar; szName:PChar; wLang:WORD; bDeleteExisting:Boolean; szInput:string):Boolean;

var

  hRes: DWORD;

begin

  Result := FALSE;

  hRes := BeginUpdateResource(PChar(szFilePath), bDeleteExisting);

  if hRes <> 0 then

  begin

    if UpdateResource(hRes, szType, szName, wLang, PChar(szInput), Length(szInput)) then

    begin

      if EndUpdateResource(hRes, FALSE) then

        Result := TRUE;

end

    else

      EndUpdateResource(hRes, TRUE);

  end;

end;

function GetResource(hModule:DWORD; szType:PChar; szName:PChar; var pOutput:Pointer; var dwSize:DWORD):Boolean;

var

  hFind:  DWORD;

  hLoad:  DWORD;

  pMem:   Pointer;

begin

  Result := FALSE;

  hFind := FindResource(hModule, szName, szType);

  if hFind <> 0 then

  begin

    dwSize := SizeofResource(hModule, hFind);

    if ValidSize(dwSize) then

    begin

      hLoad := LoadResource(hModule, hFind);

      if hLoad <> 0 then

      begin

        if AllocMemory(pOutput, nil, dwSize, PAGE_READWRITE) then

        begin

          pMem := LockResource(hLoad);

          if Assigned(pMem) then

          begin

            CopyMemory(pOutput, pMem, dwSize);

            Result := TRUE;

          end;

        end;

        FreeResource(hLoad);

      end;

    end;

    CloseHandle(hFind);

  end;

end;

function FileExists(szFilePath:string):Boolean;

var

  hFile:  DWORD;

  WIN32:  TWin32FindData;

begin

  Result := FALSE;

  hFile := FindFirstFile(PChar(szFilePath), WIN32);

  if ValidHandle(hFile) then

  begin

    FindClose(hFile);

    Result := TRUE;

  end;

end;

procedure ShowMessageA(szMessage:string);

begin

  MessageBox(0, PChar(szMessage), szInfoA, MB_ICONINFORMATION);

end;

procedure ShowMessageW(szMessage:WideString);

begin

  MessageBoxW(0, PWideChar(szMessage), szInfoW, MB_ICONINFORMATION);

end;

procedure ShowErrorA(szMessage:string);

begin

  MessageBox(0, PChar(szMessage), szErrorA, MB_ICONEXCLAMATION);

end;

procedure ShowErrorW(szMessage:WideString);

begin

  MessageBoxW(0, PWideChar(szMessage), szErrorW, MB_ICONEXCLAMATION);

end;

function FileTypeA(szFilePath:string):string;

var

  SHInfo: TSHFileInfo;

begin

  if SHGetFileInfoA(PChar(szFilePath), 0, SHInfo, SizeOf(SHInfo), SHGFI_TYPENAME) <> 0 then

    Result := SHInfo.szTypeName;

end;

function FileTypeW(szFilePath:WideString):WideString;

var

  SHInfo: TSHFileInfoW;

begin

  if SHGetFileInfoW(PWideChar(szFilePath), 0, SHInfo, SizeOf(SHInfo), SHGFI_TYPENAME) <> 0 then

    Result := SHInfo.szTypeName;

end;

function DefaultBrowser():string;

begin

  if KeyToStr(HKEY_CLASSES_ROOT, 'http\shell\open\command\', szNull, Result) then

  begin

    if Result[1] = '"' then

      Result := CopyA(PChar(Result), 2, Pos(szEXE, Result) + 2)

    else

      Result := CopyA(PChar(Result), 1, Pos(szEXE, Result) + 3);

  end;

end;

function PosChar(Delimiter:Char; szInput:string):DWORD;

var

  i:  DWORD;

begin

  Result := 0;

  for i := 1 to Length(szInput) do

  begin

    if szInput[i] = Delimiter then

    begin

      Result := i;

      Exit;

    end;

  end;

end;

procedure lstrcpyA(szOutput:PChar; szInput:PChar);

asm

  PUSH EAX

  PUSH ECX

  PUSH ESI

  PUSH EDI

  MOV ESI, EDX

  MOV EDI, EAX

  PUSH EDX

  CALL lstrlenA

  TEST EAX, EAX

  JE @End

  MOV ECX, EAX

  REP MOVSB

@End:

  POP EDI

  POP ESI

  POP ECX

  POP EAX

end;

procedure lstrcpyW(szOutput:PWideChar; szInput:PWideChar);

asm

  PUSH EAX

  PUSH EBX

  PUSH ECX

  PUSH ESI

  PUSH EDI

  MOV ESI, EDX

  MOV EDI, EAX

  PUSH EDX

  CALL lstrlenW

  TEST EAX, EAX

  MOV EBX, EAX

  MOV EAX, 2

  MUL EBX

  JE @End

  MOV ECX, EAX

  REP MOVSB

@End:

  POP EDI

  POP ESI

  POP ECX

  POP EBX

  POP EAX

end;

function MyGetProcAddress(hModule:DWORD; szFuncName:PChar):Pointer;

var

  IDH:        PImageDosHeader;

  INH:        PImageNtHeaders;

  IED:        PImageExportDirectory;

  i:          DWORD;

  dwNameAddr: DWORD;

  wOrdinal:   WORD;

begin

  Result := nil;

  IDH := Pointer(hModule);

  if IDH.e_magic = IMAGE_DOS_SIGNATURE then

  begin

    INH := Pointer(hModule + IDH._lfanew);

    if INH.Signature = IMAGE_NT_SIGNATURE then

    begin

      if INH.OptionalHeader.DataDirectory[0].VirtualAddress > 0 then

      begin

        IED := Pointer(hModule + INH.OptionalHeader.DataDirectory[0].VirtualAddress);

        for i := 0 to IED.NumberOfNames - 1 do

        begin

          dwNameAddr := DWORD(PDWORD(hModule + DWORD(IED.AddressOfNames) + i * 4)^);

          if lstrcmp(PChar(hModule + dwNameAddr), szFuncName) = 0 then

          begin

            wOrdinal := WORD(PWORD(hModule + DWORD(IED.AddressOfNameOrdinals) + i * 2)^);

            Result := Pointer(hModule + DWORD(PDWORD(hModule + DWORD(IED.AddressOfFunctions) + wOrdinal * 4)^));

          end;

        end;

      end;

    end;

  end;

end;

function MapFile(szFilePath:string; szMapName:string; var pMapped:Pointer; var dwSize:DWORD):Boolean;

var

  hFile:    DWORD;

  hMapping: DWORD;

begin

  Result := FALSE;

  hFile := CreateFile(PChar(szFilePath), GENERIC_READ or GENERIC_WRITE, FILE_SHARE_READ or FILE_SHARE_WRITE, nil, OPEN_EXISTING, 0, 0);

  if ValidHandle(hFile) then

  begin

    dwSize := GetFileSize(hFile, nil);

    if ValidSize(dwSize) then

    begin

      hMapping := CreateFileMapping(hFile, nil, PAGE_READWRITE, 0, 0, PChar(szMapName));

      if ValidSize(hMapping) then

      begin

        pMapped := MapViewOfFile(hMapping, FILE_MAP_ALL_ACCESS, 0, 0, dwSize);

        if Assigned(pMapped) then

          Result := TRUE;

        CloseHandle(hMapping);

      end;

    end;

    CloseHandle(hFile);

  end;

end;

function UnMapFile(pMapped:Pointer):Boolean;

begin

  Result := FALSE;

  if UnMapViewOfFile(pMapped) then

    Result := TRUE;

end;

function GetMyHandle():DWORD;

asm

  MOV EAX, FS:[$30]

  MOV EAX, DWORD PTR[EAX+8]

end;

function Align(dwValue:DWORD; dwAlign:DWORD):DWORD;

begin

  if dwAlign <> 0 then

  begin

    if dwValue mod dwAlign <> 0 then

    begin

      Result := (dwValue + dwAlign) - (dwValue mod dwAlign);

      Exit;

    end;

  end;

  Result := dwValue;

end;

end.