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Tricks of the Windows Gam…ming Gurus (2nd Edition)
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Disc2.iso
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vc98
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crt
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src
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strnicol.c
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1998-06-17
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/***
*strnicoll.c - Collate locale strings without regard to case
*
* Copyright (c) 1988-1998, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Compare two strings using the locale LC_COLLATE information.
* Compares at most n characters of two strings.
*
*******************************************************************************/
#include <cruntime.h>
#include <string.h>
#ifdef _WIN32
#include <windows.h>
#include <stdlib.h>
#include <malloc.h>
#include <locale.h>
#include <setlocal.h>
#include <mtdll.h>
#include <errno.h>
#include <awint.h>
#endif /* _WIN32 */
/***
*int _strnicoll() - Collate locale strings without regard to case
*
*Purpose:
* Compare two strings using the locale LC_COLLATE information
* without regard to case.
* Compares at most n characters of two strings.
*
*Entry:
* const char *s1 = pointer to the first string
* const char *s2 = pointer to the second string
* size_t count - maximum number of characters to compare
*
*Exit:
* Less than 0 = first string less than second string
* 0 = strings are equal
* Greater than 0 = first string greater than second string
*
*Exceptions:
* _NLSCMPERROR = error
* errno = EINVAL
*
*******************************************************************************/
int __cdecl _strnicoll (
const char *_string1,
const char *_string2,
size_t count
)
{
#if defined (_WIN32)
int ret;
#if defined (_MT)
int local_lock_flag;
#endif /* defined (_MT) */
if (!count)
return 0;
_lock_locale( local_lock_flag )
if (__lc_handle[LC_COLLATE] == _CLOCALEHANDLE) {
_unlock_locale( local_lock_flag )
return _strnicmp(_string1, _string2, count);
}
if ( 0 == (ret = __crtCompareStringA( __lc_handle[LC_COLLATE],
SORT_STRINGSORT | NORM_IGNORECASE,
_string1,
count,
_string2,
count,
__lc_collate_cp )) )
goto error_cleanup;
_unlock_locale( local_lock_flag )
return (ret - 2);
error_cleanup:
_unlock_locale( local_lock_flag )
errno = EINVAL;
return _NLSCMPERROR;
#else /* defined (_WIN32) */
return _strnicmp(_string1, _string2, count);
#endif /* defined (_WIN32) */
}