Leaked source code of windows server 2003
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/*++
Copyright (c) 1999-2003 Microsoft Corporation
All rights reserved
Module Name:
local.c
// @@BEGIN_DDKSPLIT
Abstract:
Implementation of debug functions
Environment:
User Mode -Win32
Revision History:
// @@END_DDKSPLIT
--*/
#if DBG
#include "local.h"
#include <stdarg.h>
#include <stdio.h>
/*++
Title:
vsntprintf
Routine Description:
Formats a string and returns a heap allocated string with the
formated data. This routine can be used to for extremely
long format strings. Note: If a valid pointer is returned
the callng functions must release the data with a call to delete.
Arguments:
psFmt - format string
pArgs - pointer to a argument list.
Return Value:
Pointer to formated string. NULL if error.
--*/
LPSTR
vsntprintf(
IN LPCSTR szFmt,
IN va_list pArgs
)
{
LPSTR pszBuff;
UINT uSize = 256;
for( ; ; )
{
pszBuff = AllocSplMem(sizeof(char) * uSize);
if (!pszBuff)
{
break;
}
//
// Attempt to format the string. If format succeeds, get out
// of the loop. If it fails, increase buffer size and continue.
// (assuming failure is due to less buffer size).
//
if (SUCCEEDED ( StringCchVPrintfA(pszBuff, uSize, szFmt, pArgs) ) )
{
break;
}
FreeSplMem(pszBuff);
pszBuff = NULL;
//
// Double the buffer size after each failure.
//
uSize *= 2;
//
// If the size is greater than 100k exit without formatting a string.
//
if (uSize > 100*1024)
{
break;
}
}
return pszBuff;
}
/*++
Title:
DbgPrint
Routine Description:
Format the string similar to sprintf and output it in the debugger.
Arguments:
pszFmt pointer format string.
.. variable number of arguments similar to sprintf.
Return Value:
0
--*/
BOOL
DebugPrint(
PCH pszFmt,
...
)
{
LPSTR pszString = NULL;
BOOL bReturn;
va_list pArgs;
va_start( pArgs, pszFmt );
pszString = vsntprintf( pszFmt, pArgs );
bReturn = !!pszString;
va_end( pArgs );
if (pszString)
{
OutputDebugStringA(pszString);
FreeSplMem(pszString);
}
return bReturn;
}
// @@BEGIN_DDKSPLIT
#ifdef NEVER
VOID
vTest(
IN LPTSTR pPrinterName,
IN LPTSTR pDocName
)
{
WCHAR buf[250];
UINT i;
ODS(("Printer %ws\nDocument %ws\n\n", pPrinterName, pDocName));
ODS(("Some numbers: %u %u %u %u %u %u %u \n\n", 1, 2, 3, 4, 5, 6 ,7));
for (i=0;i<250;i++)
{
buf[i] = i%40 + 40 ;
}
ODS(("The string %ws \n\n", buf));
}
#endif //NEVER
// @@END_DDKSPLIT
#endif // DBG