reactos/dll/win32/user32/misc/rtlstr.c

   1 /*
   2  * PROJECT:         ReactOS user32.dll
   3  * FILE:            lib/user32/misc/rtlstr.c
   4  * PURPOSE:         Large Strings
   5  * PROGRAMMER:
   6  * UPDATE HISTORY:
   7  *
   8  */
   9
  10 /* INCLUDES ******************************************************************/
  11
  12 #include <user32.h>
  13
  14 #include <wine/debug.h>
  15
  16 WINE_DEFAULT_DEBUG_CHANNEL(user32);
  17
  18 /* FUNCTIONS *****************************************************************/
  19 VOID
  20 NTAPI
  21 RtlInitLargeAnsiString(IN OUT PLARGE_ANSI_STRING DestinationString,
  22                        IN PCSZ SourceString,
  23                        IN INT Unknown)
  24 {
  25     ULONG DestSize;
  26
  27     if (SourceString)
  28     {
  29         DestSize = strlen(SourceString);
  30         DestinationString->Length = DestSize;
  31         DestinationString->MaximumLength = DestSize + sizeof(CHAR);
  32     }
  33     else
  34     {
  35         DestinationString->Length = 0;
  36         DestinationString->MaximumLength = 0;
  37     }
  38
  39     DestinationString->Buffer = (PCHAR)SourceString;
  40     DestinationString->bAnsi  = TRUE;
  41 }
  42
  43 VOID
  44 NTAPI
  45 RtlInitLargeUnicodeString(IN OUT PLARGE_UNICODE_STRING DestinationString,
  46                           IN PCWSTR SourceString,
  47                           IN INT Unknown)
  48 {
  49     ULONG DestSize;
  50
  51     if (SourceString)
  52     {
  53         DestSize = wcslen(SourceString) * sizeof(WCHAR);
  54         DestinationString->Length = DestSize;
  55         DestinationString->MaximumLength = DestSize + sizeof(WCHAR);
  56     }
  57     else
  58     {
  59         DestinationString->Length = 0;
  60         DestinationString->MaximumLength = 0;
  61     }
  62
  63     DestinationString->Buffer = (PWSTR)SourceString;
  64     DestinationString->bAnsi  = FALSE;
  65 }
  66
  67 BOOL
  68 NTAPI
  69 RtlLargeStringToUnicodeString( PUNICODE_STRING DestinationString,
  70                                PLARGE_STRING SourceString)
  71 {
  72   ANSI_STRING AnsiString;
  73
  74   RtlInitUnicodeString(DestinationString, NULL);
  75   if (DestinationString && SourceString && SourceString->bAnsi)
  76   {
  77      RtlInitAnsiString(&AnsiString, (LPSTR)SourceString->Buffer);
  78      return NT_SUCCESS(RtlAnsiStringToUnicodeString(DestinationString, &AnsiString, TRUE));
  79   }
  80   else if (DestinationString && SourceString)
  81   {
  82      return RtlCreateUnicodeString(DestinationString, SourceString->Buffer);
  83   }
  84   else
  85      return FALSE;
  86 }