windows-nt/Source/XPSP1/NT/base/crts/crtw32/convert/toupper.c

252 lines
7.3 KiB
C
Raw Normal View History

2020-09-26 03:20:57 -05:00
/***
*toupper.c - convert character to uppercase
*
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Defines function versions of _toupper() and toupper().
*
*Revision History:
* 11-09-84 DFW created
* 12-11-87 JCR Added "_LOAD_DS" to declaration
* 02-23-89 GJF Added function version of _toupper and cleaned up.
* 03-26-89 GJF Migrated to 386 tree
* 03-06-90 GJF Fixed calling type, added #include <cruntime.h> and
* fixed copyright.
* 09-27-90 GJF New-style function declarators.
* 10-11-91 ETC Locale support for toupper under _INTL switch.
* 12-10-91 ETC Updated nlsapi; added multithread.
* 12-17-92 KRS Updated and optimized for latest NLSAPI. Bug-fixes.
* 01-19-93 CFW Fixed typo.
* 03-25-93 CFW _toupper now defined when _INTL.
* 04-06-93 SKS Replace _CRTAPI* with _cdecl
* 06-01-93 CFW Simplify "C" locale test.
* 06-02-93 SRW ignore _INTL if _NTSUBSET_ defined.
* 09-15-93 CFW Change buffer to unsigned char to fix nasty cast bug.
* 09-15-93 CFW Use ANSI conformant "__" names.
* 09-22-93 CFW Use __crtxxx internal NLS API wrapper.
* 09-28-93 GJF Merged NT SDK and Cuda versions.
* 11-09-93 CFW Add code page for __crtxxx().
* 01-14-94 SRW if _NTSUBSET_ defined call Rtl functions
* 09-06-94 CFW Remove _INTL switch.
* 10-18-94 BWT Fix build warning in NTSUBSET section.
* 10-17-94 GJF Sped up for C locale. Added _toupper_lk. Also,
* cleaned up pre-processor conditionals.
* 01-07-95 CFW Mac merge cleanup.
* 09-26-95 GJF New locking macro, and scheme, for functions which
* reference the locale.
* 04-01-96 BWT POSIX work.
* 06-25-96 GJF Removed DLL_FOR_WIN32S. Replaced defined(_WIN32) with
* !defined(_MAC). Polished the format a bit.
* 03-17-97 RDK Added error flag to __crtLCMapStringA.
* 08-27-98 GJF Revised multithread support based on threadlocinfo
* struct.
* 05-17-99 PML Remove all Macintosh support.
* 09-03-00 GB Modified for increased performance.
* 04-03-01 PML Reverse lead/trail bytes in composed char (vs7#232853)
*
*******************************************************************************/
#if defined(_NTSUBSET_) || defined(_POSIX_)
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#endif
#include <cruntime.h>
#include <ctype.h>
#include <stddef.h>
#include <locale.h>
#include <setlocal.h>
#include <mtdll.h>
#include <awint.h>
/* remove macro definitions of _toupper() and toupper()
*/
#undef _toupper
#undef toupper
/* define function-like macro equivalent to _toupper()
*/
#define mkupper(c) ( (c)-'a'+'A' )
/***
*int _toupper(c) - convert character to uppercase
*
*Purpose:
* _toupper() is simply a function version of the macro of the same name.
*
*Entry:
* c - int value of character to be converted
*
*Exit:
* returns int value of uppercase representation of c
*
*Exceptions:
*
*******************************************************************************/
int __cdecl _toupper (
int c
)
{
return(mkupper(c));
}
/***
*int toupper(c) - convert character to uppercase
*
*Purpose:
* toupper() is simply a function version of the macro of the same name.
*
*Entry:
* c - int value of character to be converted
*
*Exit:
* if c is a lower case letter, returns int value of uppercase
* representation of c. otherwise, it returns c.
*
*Exceptions:
*
*******************************************************************************/
int __cdecl toupper (
int c
)
{
#if !defined(_NTSUBSET_) && !defined(_POSIX_)
#ifdef _MT
pthreadlocinfo ptloci = _getptd()->ptlocinfo;
if ( ptloci != __ptlocinfo )
ptloci = __updatetlocinfo();
return __toupper_mt(ptloci, c);
}
/***
*int __toupper_mt(ptloci, c) - convert character to uppercase
*
*Purpose:
* Multi-thread function! Non-locking version of toupper.
*
*Entry:
*
*Exit:
*
*Exceptions:
*
*******************************************************************************/
int __cdecl __toupper_mt (
pthreadlocinfo ptloci,
int c
)
{
#endif /* _MT */
int size;
unsigned char inbuffer[3];
unsigned char outbuffer[3];
#ifndef _MT
if ( __lc_handle[LC_CTYPE] == _CLOCALEHANDLE ||
(__lc_clike && (unsigned)c <= 0x7f))
return __ascii_toupper(c);
#else
if ( ptloci->lc_handle[LC_CTYPE] == _CLOCALEHANDLE ||
(ptloci->lc_clike && (unsigned)c <= 0x7f))
return __ascii_toupper(c);
#endif
/* if checking case of c does not require API call, do it */
if ( (unsigned)c < 256 ) {
#ifdef _MT
if ( !__islower_mt(ptloci, c) )
#else
if ( !islower(c) )
#endif
{
return c;
}
}
/* convert int c to multibyte string */
#ifdef _MT
if ( __isleadbyte_mt(ptloci, c >> 8 & 0xff) ) {
#else
if ( isleadbyte(c >> 8 & 0xff) ) {
#endif
inbuffer[0] = (c >> 8 & 0xff); /* put lead-byte at start of str */
inbuffer[1] = (unsigned char)c;
inbuffer[2] = 0;
size = 2;
} else {
inbuffer[0] = (unsigned char)c;
inbuffer[1] = 0;
size = 1;
}
/* convert wide char to lowercase */
#ifdef _MT
if ( 0 == (size = __crtLCMapStringA( ptloci->lc_handle[LC_CTYPE],
#else
if ( 0 == (size = __crtLCMapStringA( __lc_handle[LC_CTYPE],
#endif
LCMAP_UPPERCASE,
inbuffer,
size,
outbuffer,
3,
#ifdef _MT
ptloci->lc_codepage,
#else
__lc_codepage,
#endif
TRUE)) )
{
return c;
}
/* construct integer return value */
if (size == 1)
return ((int)outbuffer[0]);
else
return ((int)outbuffer[1] | ((int)outbuffer[0] << 8));
#else /* def(_NTSUBSET_) || def(_POSIX_) */
{
NTSTATUS Status;
char *s = (char *) &c;
WCHAR Unicode;
ULONG UnicodeSize;
ULONG MultiSize;
UCHAR MultiByte[2];
Unicode = RtlAnsiCharToUnicodeChar( &s );
Status = RtlUpcaseUnicodeToMultiByteN( MultiByte,
sizeof( MultiByte ),
&MultiSize,
&Unicode,
sizeof( Unicode )
);
if (!NT_SUCCESS( Status ))
return c;
else
if (MultiSize == 1)
return ((int)MultiByte[0]);
else
return ((int)MultiByte[1] | ((int)MultiByte[0] << 8));
}
#endif /* def(_NTSUBSET_) || def(_POSIX_) */
}