4coder-non-source/test_data/lots_of_files/xwcsxfrm.c

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2023-09-30 01:17:40 +00:00
/***
*xwcsxfrm.c - Transform a wide-character string using locale information
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
*
*Purpose:
* Transform a wide-character string using the locale information as set by
* LC_COLLATE.
*
*******************************************************************************/
#include <cruntime.h>
#include <windows.h>
#include <string.h>
#include <limits.h>
#include <locale.h>
#include <mtdll.h>
#include <setlocal.h>
#include <stdlib.h>
#include <mtdll.h>
#include <awint.h>
#include <dbgint.h>
#include <xlocinfo.h> /* for _Collvec, _Wcsxfrm */
/***
*size_t _Wcsxfrm() - Transform a string using locale information
*
*Purpose:
* Transform the wide string pointed to by _string2 and place the
* resulting wide string into the array pointed to by _string1.
* No more than _end1 - _string1 wide characters are placed into the
* resulting string (including the null).
*
* The transformation is such that if wcscmp() is applied to
* the two transformed strings, the return value is equal to
* the result of wcscoll() applied to the two original strings.
* Thus, the conversion must take the locale LC_COLLATE info
* into account.
*
* In the C locale, wcsxfrm() simply resolves to wcsncpy()/wcslen().
*
*Entry:
* wchar_t *_string1 = pointer to beginning of result string
* wchar_t *_end1 = pointer past end of result string
* const wchar_t *_string2 = pointer to beginning of source string
* const wchar_t *_end2 = pointer past end of source string
* const _Collvec *ploc = pointer to locale info
*
*Exit:
* Length of the transformed string.
* If the value returned is too big, the contents of the
* _string1 array are indeterminate.
*
*Exceptions:
* Non-standard: if OM/API error, return INT_MAX.
*
*******************************************************************************/
_CRTIMP2_PURE size_t __CLRCALL_PURE_OR_CDECL _Wcsxfrm (
wchar_t *_string1,
wchar_t *_end1,
const wchar_t *_string2,
const wchar_t *_end2,
const _Collvec *ploc
)
{
size_t _n1 = _end1 - _string1;
size_t _n2 = _end2 - _string2;
size_t size = (size_t)-1;
unsigned char *bbuffer=NULL;
const wchar_t *locale_name;
if (ploc == 0)
{
locale_name = ___lc_locale_name_func()[LC_COLLATE];
}
else
{
locale_name = ploc->_LocaleName;
}
if (locale_name == NULL)
{
if (_n2 <= _n1)
{
memcpy(_string1, _string2, _n2 * sizeof (wchar_t));
}
size=_n2;
}
else
{
/*
* When using LCMAP_SORTKEY, LCMapStringW handles BYTES not wide
* chars. We use a byte buffer to hold bytes and then convert the
* byte string to a wide char string and return this so it can be
* compared using wcscmp(). User's buffer is _n1 wide chars, so
* use an internal buffer of _n1 bytes.
*/
if (NULL != (bbuffer = (unsigned char *)_malloc_crt(_n1)))
{
if (0 == (size = __crtLCMapStringW(locale_name,
LCMAP_SORTKEY,
_string2,
(int)_n2,
(wchar_t *)bbuffer,
(int)_n1)))
{
/* buffer not big enough, get size required. */
if (0 == (size = __crtLCMapStringW(locale_name,
LCMAP_SORTKEY,
_string2,
(int)_n2,
NULL,
0)))
{
size = INT_MAX; /* default error */
}
} else {
size_t i;
/* string successfully mapped, convert to wide char */
for (i = 0; i < size; i++)
{
_string1[i] = (wchar_t)bbuffer[i];
}
}
}
}
if(bbuffer)
{
_free_crt(bbuffer);
}
return (size_t)size;
}
#ifdef MRTDLL
_CRTIMP2_PURE size_t __CLRCALL_PURE_OR_CDECL _Wcsxfrm (
unsigned short *_string1,
unsigned short *_end1,
const unsigned short *_string2,
const unsigned short *_end2,
const _Collvec *ploc
)
{
return _Wcsxfrm(
(wchar_t *)_string1,
(wchar_t *)_end1,
(const wchar_t *)_string2,
(const wchar_t *)_end2,
ploc);
}
#endif /* MRTDLL */