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134 lines
2.4 KiB
134 lines
2.4 KiB
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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spprintf.c
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Abstract:
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safer sprintf variants
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Author:
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Jay Krell (a-JayK) November 2000
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Revision History:
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--*/
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#include "spprecmp.h"
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#pragma hdrstop
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#include <stdarg.h>
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#include <stdio.h>
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#include "spprintf.h"
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#include "spcab.h"
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//
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// _snprintf and co. do not write a terminal nul when the string just fits.
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// These function do.
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//
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void
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SpFormatStringVaA(
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PSTR Buffer,
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SIZE_T Size,
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PCSTR Format,
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va_list Args
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)
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{
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if (Buffer != NULL && Size != 0)
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{
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Buffer[0] = 0;
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Size -= 1;
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if (Size != 0)
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_vsnprintf(Buffer, Size, Format, Args);
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Buffer[Size] = 0;
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}
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}
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void
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__cdecl
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SpFormatStringA(
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PSTR Buffer,
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SIZE_T Size,
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PCSTR Format,
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...
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)
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{
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va_list Args;
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va_start(Args, Format);
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SpFormatStringVaA(Buffer, Size, Format, Args);
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va_end(Args);
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}
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void
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SpFormatStringVaW(
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PWSTR Buffer,
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SIZE_T Size,
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PCWSTR Format,
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va_list Args
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)
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{
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if (Buffer != NULL && Size != 0)
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{
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Buffer[0] = 0;
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Size -= 1;
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if (Size != 0)
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_vsnwprintf(Buffer, Size, Format, Args);
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Buffer[Size] = 0;
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}
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}
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void
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__cdecl
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SpFormatStringW(
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PWSTR Buffer,
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SIZE_T Size,
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PCWSTR Format,
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...
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)
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{
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va_list Args;
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va_start(Args, Format);
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SpFormatStringVaW(Buffer, Size, Format, Args);
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va_end(Args);
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}
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NTSTATUS
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__cdecl
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SpFormatStringWToA(
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PSTR Buffer,
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SIZE_T Size,
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PCWSTR Format,
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...
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)
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{
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va_list Args;
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UNICODE_STRING UnicodeBuffer = { 0 };
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ANSI_STRING AnsiBuffer = { 0 };
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NTSTATUS Status = STATUS_SUCCESS;
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va_start(Args, Format);
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UnicodeBuffer.Buffer = (PWSTR)SpMemAlloc(Size * sizeof(UnicodeBuffer.Buffer[0]));
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if (UnicodeBuffer.Buffer == NULL) {
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Status = STATUS_NO_MEMORY;
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goto Exit;
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}
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if (Size != 0) {
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UnicodeBuffer.Buffer[0] = 0;
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}
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SpFormatStringVaW(UnicodeBuffer.Buffer, Size, Format, Args);
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UnicodeBuffer.Length = (USHORT)(wcslen(UnicodeBuffer.Buffer) + 1) * sizeof(UnicodeBuffer.Buffer[0]);
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AnsiBuffer.MaximumLength = (USHORT)Size * sizeof(AnsiBuffer.Buffer[0]);
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Status = SpUnicodeStringToAnsiString(&AnsiBuffer, &UnicodeBuffer, FALSE);
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Exit:
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va_end(Args);
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return Status;
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}
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