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wctype.c

/*  Copyright (C) 2002, 2003     Manuel Novoa III
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!
 *
 *  Besides uClibc, I'm using this code in my libc for elks, which is
 *  a 16-bit environment with a fairly limited compiler.  It would make
 *  things much easier for me if this file isn't modified unnecessarily.
 *  In particular, please put any new or replacement functions somewhere
 *  else, and modify the makefile to use your version instead.
 *  Thanks.  Manuel
 *
 *  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION! */

#define _GNU_SOURCE
#define __NO_CTYPE

#include <wctype.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <locale.h>
#include <ctype.h>
#include <stdint.h>
#include <bits/uClibc_uwchar.h>

#if defined(__LOCALE_C_ONLY) && defined(__UCLIBC_DO_XLOCALE)
#error xlocale functionality is not supported in stub locale mode.
#endif

#ifdef __UCLIBC_HAS_XLOCALE__
#include <xlocale.h>
#endif /* __UCLIBC_HAS_XLOCALE__ */

/* We know wide char support is enabled.  We wouldn't be here otherwise. */

/* Define this if you want to unify the towupper and towlower code in the
 * towctrans function. */
/* #define SMALL_UPLOW */

/**********************************************************************/
#ifdef __UCLIBC_MJN3_ONLY__
#ifdef L_iswspace
/* generates one warning */
#warning TODO: Fix the __CTYPE_* codes!
#endif
#endif /* __UCLIBC_MJN3_ONLY__ */

#if 1
/* Taking advantage of the C99 mutual-exclusion guarantees for the various
 * (w)ctype classes, including the descriptions of printing and control
 * (w)chars, we can place each in one of the following mutually-exlusive
 * subsets.  Since there are less than 16, we can store the data for
 * each (w)chars in a nibble. In contrast, glibc uses an unsigned int
 * per (w)char, with one bit flag for each is* type.  While this allows
 * a simple '&' operation to determine the type vs. a range test and a
 * little special handling for the "blank" and "xdigit" types in my
 * approach, it also uses 8 times the space for the tables on the typical
 * 32-bit archs we supported.*/
enum {
      __CTYPE_unclassified = 0,
      __CTYPE_alpha_nonupper_nonlower,
      __CTYPE_alpha_lower,
      __CTYPE_alpha_upper_lower,
      __CTYPE_alpha_upper,
      __CTYPE_digit,
      __CTYPE_punct,
      __CTYPE_graph,
      __CTYPE_print_space_nonblank,
      __CTYPE_print_space_blank,
      __CTYPE_space_nonblank_noncntrl,
      __CTYPE_space_blank_noncntrl,
      __CTYPE_cntrl_space_nonblank,
      __CTYPE_cntrl_space_blank,
      __CTYPE_cntrl_nonspace
};
#endif


/* The following is used to implement wctype(), but it is defined
 * here because the ordering must agree with that of the enumeration
 * below (ignoring unclassified). */
#define __CTYPE_TYPESTRING \
      "\6alnum\0\6alpha\0\6blank\0\6cntrl\0\6digit\0\6graph\0\6lower\0" \
      "\6print\0\6punct\0\6space\0\6upper\0\7xdigit\0\0"


/* The values for wctype_t. */
enum {
      _CTYPE_unclassified = 0,
      _CTYPE_isalnum,
      _CTYPE_isalpha,
      _CTYPE_isblank,
      _CTYPE_iscntrl,
      _CTYPE_isdigit,
      _CTYPE_isgraph,
      _CTYPE_islower,
      _CTYPE_isprint,
      _CTYPE_ispunct,
      _CTYPE_isspace,
      _CTYPE_isupper,
      _CTYPE_isxdigit                     /* _MUST_ be last of the standard classes! */
};

/* The following is used to implement wctrans(). */

#define __CTYPE_TRANSTRING    "\10tolower\0\10toupper\0\10totitle\0\0"

enum {
      _CTYPE_tolower = 1,
      _CTYPE_toupper,
      _CTYPE_totitle
};

/*--------------------------------------------------------------------*/

#define _CTYPE_iswxdigit (_CTYPE_isxdigit)

/*--------------------------------------------------------------------*/

#ifdef __UCLIBC_MJN3_ONLY__
#ifdef L_iswspace
/* generates one warning */
#warning TODO: Fix WC* defines!
#endif
#endif /* __UCLIBC_MJN3_ONLY__ */

#define ENCODING        ((__UCLIBC_CURLOCALE_DATA).encoding)

#define WCctype               ((__UCLIBC_CURLOCALE_DATA).tblwctype)
#define WCuplow               ((__UCLIBC_CURLOCALE_DATA).tblwuplow)
#define WCcmob                ((__UCLIBC_CURLOCALE_DATA).tblwcomb)
#define WCuplow_diff    ((__UCLIBC_CURLOCALE_DATA).tblwuplow_diff)


#define WC_TABLE_DOMAIN_MAX   __LOCALE_DATA_WC_TABLE_DOMAIN_MAX

#define WCctype_II_LEN        __LOCALE_DATA_WCctype_II_LEN
#define WCctype_TI_LEN        __LOCALE_DATA_WCctype_TI_LEN
#define WCctype_UT_LEN        __LOCALE_DATA_WCctype_UT_LEN
#define WCctype_II_SHIFT      __LOCALE_DATA_WCctype_II_SHIFT
#define WCctype_TI_SHIFT      __LOCALE_DATA_WCctype_TI_SHIFT

#define WCuplow_II_LEN        __LOCALE_DATA_WCuplow_II_LEN
#define WCuplow_TI_LEN        __LOCALE_DATA_WCuplow_TI_LEN
#define WCuplow_UT_LEN        __LOCALE_DATA_WCuplow_UT_LEN
#define WCuplow_II_SHIFT      __LOCALE_DATA_WCuplow_II_SHIFT
#define WCuplow_TI_SHIFT      __LOCALE_DATA_WCuplow_TI_SHIFT


#define WCctype_TI_MASK       ((1 << (WCctype_TI_SHIFT)) - 1)
#define WCctype_II_MASK       ((1 << (WCctype_II_SHIFT)) - 1)

/**********************************************************************/

#undef __PASTE2
#undef __PASTE3
#define __PASTE2(X,Y)         X ## Y
#define __PASTE3(X,Y,Z)       X ## Y ## Z

#ifdef __UCLIBC_DO_XLOCALE

extern int __iswctype_l (wint_t __wc, wctype_t __desc, __locale_t __locale)
     __THROW;

#define ISW_FUNC_BODY(NAME) \
int __PASTE3(__isw,NAME,_l) (wint_t wc, __locale_t l) \
{ \
      return __iswctype_l(wc, __PASTE2(_CTYPE_is,NAME), l); \
} \
weak_alias(__PASTE3(__isw,NAME,_l), __PASTE3(isw,NAME,_l))

#else  /* __UCLIBC_DO_XLOCALE */

extern int __iswctype (wint_t __wc, wctype_t __desc) __THROW;

#define ISW_FUNC_BODY(NAME) \
int __PASTE2(isw,NAME) (wint_t wc) \
{ \
      return __iswctype(wc, __PASTE2(_CTYPE_is,NAME)); \
}

#endif /* __UCLIBC_DO_XLOCALE */
/**********************************************************************/
#if defined(L_iswalnum) || defined(L_iswalnum_l)

ISW_FUNC_BODY(alnum);

#endif
/**********************************************************************/
#if defined(L_iswalpha) || defined(L_iswalpha_l)

ISW_FUNC_BODY(alpha);

#endif
/**********************************************************************/
#if defined(L_iswblank) || defined(L_iswblank_l)

ISW_FUNC_BODY(blank);

#endif
/**********************************************************************/
#if defined(L_iswcntrl) || defined(L_iswcntrl_l)

ISW_FUNC_BODY(cntrl);

#endif
/**********************************************************************/
#if defined(L_iswdigit) || defined(L_iswdigit_l)

ISW_FUNC_BODY(digit);

#endif
/**********************************************************************/
#if defined(L_iswgraph) || defined(L_iswgraph_l)

ISW_FUNC_BODY(graph);

#endif
/**********************************************************************/
#if defined(L_iswlower) || defined(L_iswlower_l)

ISW_FUNC_BODY(lower);

#endif
/**********************************************************************/
#if defined(L_iswprint) || defined(L_iswprint_l)

ISW_FUNC_BODY(print);

#endif
/**********************************************************************/
#if defined(L_iswpunct) || defined(L_iswpunct_l)

ISW_FUNC_BODY(punct);

#endif
/**********************************************************************/
#if defined(L_iswspace) || defined(L_iswspace_l)

ISW_FUNC_BODY(space);

#endif
/**********************************************************************/
#if defined(L_iswupper) || defined(L_iswupper_l)

ISW_FUNC_BODY(upper);

#endif
/**********************************************************************/
#if defined(L_iswxdigit) || defined(L_iswxdigit_l)

ISW_FUNC_BODY(xdigit);

#endif
/**********************************************************************/
#if defined(L_towlower) || defined(L_towlower_l)

#ifdef L_towlower
#define TOWLOWER(w) towlower(w)
#else  /* L_towlower */
#define TOWLOWER(w) __towlower_l(w, __locale_t locale)
#undef __UCLIBC_CURLOCALE_DATA
#undef __UCLIBC_CURLOCALE
#define __UCLIBC_CURLOCALE_DATA (*locale)
#define __UCLIBC_CURLOCALE (locale)
#endif /* L_towlower */

#ifdef __UCLIBC_HAS_XLOCALE__
#define TOWCTRANS(w,d) __towctrans_l(w,d, __UCLIBC_CURLOCALE)
#else  /* __UCLIBC_HAS_XLOCALE__ */
#define TOWCTRANS(w,d) towctrans(w,d)
#endif /* __UCLIBC_HAS_XLOCALE__ */

#define __C_towlower(wc) \
      ((((__uwchar_t)(wc)) <= 0x7f) ? (__C_ctype_tolower)[(wc)] : (wc))

#ifdef __LOCALE_C_ONLY

wint_t towlower(wint_t wc)
{
#ifdef __UCLIBC_HAS_CTYPE_TABLES__
      return __C_towlower(wc);
#else
      return (wc == ((unsigned int)(wc)))
            ? __C_tolower(((unsigned int)(wc)))
            : 0;
#endif
}

#else  /* __LOCALE_C_ONLY */

#ifdef SMALL_UPLOW

#if defined(L_towlower) && defined(__UCLIBC_HAS_XLOCALE__)

wint_t towlower(wint_t wc)
{
      return __towctrans_l(wc, _CTYPE_tolower, __UCLIBC_CURLOCALE);
}

#else  /* defined(L_towlower) && defined(__UCLIBC_HAS_XLOCALE__) */

wint_t TOWLOWER(wint_t wc)
{
      return TOWCTRANS(wc, _CTYPE_tolower);
}

#endif /* defined(L_towlower) && defined(__UCLIBC_HAS_XLOCALE__) */

#else  /* SMALL_UPLOW */

#if defined(L_towlower) && defined(__UCLIBC_HAS_XLOCALE__)

wint_t towlower(wint_t wc)
{
      return __towlower_l(wc, __UCLIBC_CURLOCALE);
}

#else  /* defined(L_towlower) && defined(__UCLIBC_HAS_XLOCALE__) */

wint_t TOWLOWER(wint_t wc)
{
      unsigned int sc, n, i;
      __uwchar_t u = wc;

      if (ENCODING == __ctype_encoding_7_bit) {
            /* We're in the C/POSIX locale, so ignore the tables. */
            return __C_towlower(wc);
      }

      if (u <= WC_TABLE_DOMAIN_MAX) {
            sc = u & ((1 << WCuplow_TI_SHIFT) - 1);
            u >>= WCuplow_TI_SHIFT;
            n = u & ((1 << WCuplow_II_SHIFT) - 1);
            u >>= WCuplow_II_SHIFT;

            i = ((unsigned int) WCuplow[u]) << WCuplow_II_SHIFT;
            i = ((unsigned int) WCuplow[WCuplow_II_LEN + i + n])
                  << WCuplow_TI_SHIFT;
            i = ((unsigned int) WCuplow[WCuplow_II_LEN + WCuplow_TI_LEN
                                                            + i + sc]) << 1;
            wc += WCuplow_diff[i + 1];
      }
      return wc;
}

#endif /* defined(L_towlower) && defined(__UCLIBC_HAS_XLOCALE__) */

#endif /* SMALL_UPLOW */

#ifdef L_towlower_l
weak_alias(__towlower_l, towlower_l)
#endif /* L_towlower_l */

#endif /* __LOCALE_C_ONLY */

#endif
/**********************************************************************/
#if defined(L_towupper) || defined(L_towupper_l)

#ifdef L_towupper
#define TOWUPPER(w) towupper(w)
#else  /* L_towupper */
#define TOWUPPER(w) __towupper_l(w, __locale_t locale)
#undef __UCLIBC_CURLOCALE_DATA
#undef __UCLIBC_CURLOCALE
#define __UCLIBC_CURLOCALE_DATA (*locale)
#define __UCLIBC_CURLOCALE (locale)
#endif /* L_towupper */

#ifdef __UCLIBC_HAS_XLOCALE__
#define TOWCTRANS(w,d) __towctrans_l(w,d, __UCLIBC_CURLOCALE)
#else  /* __UCLIBC_HAS_XLOCALE__ */
#define TOWCTRANS(w,d) towctrans(w,d)
#endif /* __UCLIBC_HAS_XLOCALE__ */

#define __C_towupper(wc) \
      ((((__uwchar_t)(wc)) <= 0x7f) ? (__C_ctype_toupper)[(wc)] : (wc))

#ifdef __LOCALE_C_ONLY

wint_t towupper(wint_t wc)
{
#ifdef __UCLIBC_HAS_CTYPE_TABLES__
      return __C_towupper(wc);
#else
      return (wc == ((unsigned int)(wc)))
            ? __C_toupper(((unsigned int)(wc)))
            : 0;
#endif

}

#else  /* __LOCALE_C_ONLY */

#ifdef SMALL_UPLOW

#if defined(L_towupper) && defined(__UCLIBC_HAS_XLOCALE__)

wint_t towupper(wint_t wc)
{
      return __towctrans_l(wc, _CTYPE_toupper, __UCLIBC_CURLOCALE);
}

#else  /* defined(L_towupper) && defined(__UCLIBC_HAS_XLOCALE__) */

wint_t TOWUPPER(wint_t wc)
{
      return TOWCTRANS(wc, _CTYPE_toupper);
}

#endif /* defined(L_towupper) && defined(__UCLIBC_HAS_XLOCALE__) */

#else  /* SMALL_UPLOW */

#if defined(L_towupper) && defined(__UCLIBC_HAS_XLOCALE__)

wint_t towupper(wint_t wc)
{
      return __towupper_l(wc, __UCLIBC_CURLOCALE);
}

#else  /* defined(L_towupper) && defined(__UCLIBC_HAS_XLOCALE__) */

wint_t TOWUPPER(wint_t wc)
{
      unsigned int sc, n, i;
      __uwchar_t u = wc;

      if (ENCODING == __ctype_encoding_7_bit) {
            /* We're in the C/POSIX locale, so ignore the tables. */
            return __C_towupper(wc);
      }

      if (u <= WC_TABLE_DOMAIN_MAX) {
            sc = u & ((1 << WCuplow_TI_SHIFT) - 1);
            u >>= WCuplow_TI_SHIFT;
            n = u & ((1 << WCuplow_II_SHIFT) - 1);
            u >>= WCuplow_II_SHIFT;

            i = ((unsigned int) WCuplow[u]) << WCuplow_II_SHIFT;
            i = ((unsigned int) WCuplow[WCuplow_II_LEN + i + n])
                  << WCuplow_TI_SHIFT;
            i = ((unsigned int) WCuplow[WCuplow_II_LEN + WCuplow_TI_LEN
                                                            + i + sc]) << 1;
            wc += WCuplow_diff[i];
      }
      return wc;
}

#endif /* defined(L_towupper) && defined(__UCLIBC_HAS_XLOCALE__) */

#endif /* SMALL_UPLOW */

#ifdef L_towupper_l
weak_alias(__towupper_l, towupper_l)
#endif /* L_towupper_l */

#endif /* __LOCALE_C_ONLY */

#endif
/**********************************************************************/
#ifdef L_wctype

static const unsigned char typestring[] = __CTYPE_TYPESTRING;
/*  extern const unsigned char typestring[]; */

wctype_t wctype(const char *property)
{
      const unsigned char *p;
      int i;

      p = typestring;
      i = 1;
      do {
            if (!strcmp(property, ++p)) {
                  return i;
            }
            ++i;
            p += p[-1];
      } while (*p);

      /* TODO - Add locale-specific classifications. */
      return 0;
}

#endif
/**********************************************************************/
#ifdef L_wctype_l

#ifdef __UCLIBC_MJN3_ONLY__
#warning REMINDER: Currently wctype_l simply calls wctype.
#endif /* __UCLIBC_MJN3_ONLY__ */

wctype_t __wctype_l (const char *property, __locale_t locale)
{
      return wctype(property);
}

weak_alias(__wctype_l, wctype_l)

#endif
/**********************************************************************/
#if defined(L_iswctype) || defined(L_iswctype_l)

#define __C_iswdigit(c) \
      ((sizeof(c) == sizeof(char)) \
       ? (((unsigned char)((c) - '0')) < 10) \
       : (((__uwchar_t)((c) - '0')) < 10))
#define __C_iswxdigit(c) \
      (__C_iswdigit(c) \
       || ((sizeof(c) == sizeof(char)) \
             ? (((unsigned char)((((c)) | 0x20) - 'a')) < 6) \
             : (((__uwchar_t)((((c)) | 0x20) - 'a')) < 6)))

#ifdef __UCLIBC_MJN3_ONLY__
#ifdef L_iswctype
#warning CONSIDER: Change to bit shift?  would need to sync with wctype.h
#endif
#endif /* __UCLIBC_MJN3_ONLY__ */


#ifdef __UCLIBC_HAS_CTYPE_TABLES__
#if !defined(__UCLIBC_HAS_XLOCALE__) || defined(L_iswctype_l)

static const unsigned short int desc2flag[] = {
      [_CTYPE_unclassified] = 0,
      [_CTYPE_isalnum] = (unsigned short int) _ISwalnum,
      [_CTYPE_isalpha] = (unsigned short int) _ISwalpha,
      [_CTYPE_isblank] = (unsigned short int) _ISwblank,
      [_CTYPE_iscntrl] = (unsigned short int) _ISwcntrl,
      [_CTYPE_isdigit] = (unsigned short int) _ISwdigit,
      [_CTYPE_isgraph] = (unsigned short int) _ISwgraph,
      [_CTYPE_islower] = (unsigned short int) _ISwlower,
      [_CTYPE_isprint] = (unsigned short int) _ISwprint,
      [_CTYPE_ispunct] = (unsigned short int) _ISwpunct,
      [_CTYPE_isspace] = (unsigned short int) _ISwspace,
      [_CTYPE_isupper] = (unsigned short int) _ISwupper,
      [_CTYPE_isxdigit] = (unsigned short int) _ISwxdigit,
};

#endif /* defined(L_iswctype_L) || defined(__LOCALE_C_ONLY) */
#endif /* __UCLIBC_HAS_CTYPE_TABLES__ */

#ifdef __LOCALE_C_ONLY

#ifdef __UCLIBC_HAS_CTYPE_TABLES__

int __iswctype(wint_t wc, wctype_t desc)
{
      /* Note... wctype_t is unsigned. */

      if ((((__uwchar_t) wc) <= 0x7f)
            && (desc < (sizeof(desc2flag)/sizeof(desc2flag[0])))
            ) {
            return __isctype(wc, desc2flag[desc]);
      }
      return 0;
}

#else  /* __UCLIBC_HAS_CTYPE_TABLES__ */

int __iswctype(wint_t wc, wctype_t desc)
{
      /* This is lame, but it is here just to get it working for now. */

      if (wc == ((unsigned int)(wc))) {
            switch(desc) {
                  case _CTYPE_isupper:
                        return __C_isupper((unsigned int)(wc));
                  case _CTYPE_islower:
                        return __C_islower((unsigned int)(wc));
                  case _CTYPE_isalpha:
                        return __C_isalpha((unsigned int)(wc));
                  case _CTYPE_isdigit:
                        return __C_isdigit((unsigned int)(wc));
                  case _CTYPE_isxdigit:
                        return __C_isxdigit((unsigned int)(wc));
                  case _CTYPE_isspace:
                        return __C_isspace((unsigned int)(wc));
                  case _CTYPE_isprint:
                        return __C_isprint((unsigned int)(wc));
                  case _CTYPE_isgraph:
                        return __C_isgraph((unsigned int)(wc));
                  case _CTYPE_isblank:
                        return __C_isblank((unsigned int)(wc));
                  case _CTYPE_iscntrl:
                        return __C_iscntrl((unsigned int)(wc));
                  case _CTYPE_ispunct:
                        return __C_ispunct((unsigned int)(wc));
                  case _CTYPE_isalnum:
                        return __C_isalnum((unsigned int)(wc));
                  default:
                        break;
            }
      }
      return 0;
}

#endif /* __UCLIBC_HAS_CTYPE_TABLES__ */

#else  /* __LOCALE_C_ONLY */

#ifdef __UCLIBC_MJN3_ONLY__
#ifdef L_iswctype
#warning CONSIDER: Handle combining class?
#endif
#endif /* __UCLIBC_MJN3_ONLY__ */

#ifdef L_iswctype
#define ISWCTYPE(w,d) __iswctype(w,d)
#else  /* L_iswctype */
#define ISWCTYPE(w,d) __iswctype_l(w,d, __locale_t locale)
#undef __UCLIBC_CURLOCALE_DATA
#undef __UCLIBC_CURLOCALE
#define __UCLIBC_CURLOCALE_DATA (*locale)
#define __UCLIBC_CURLOCALE (locale)
#endif /* L_iswctype */

#if defined(L_iswctype) && defined(__UCLIBC_HAS_XLOCALE__)

int __iswctype(wint_t wc, wctype_t desc)
{
      return __iswctype_l(wc, desc, __UCLIBC_CURLOCALE);
}

#else  /* defined(L_iswctype) && defined(__UCLIBC_HAS_XLOCALE__) */

int ISWCTYPE(wint_t wc, wctype_t desc)
{
      unsigned int sc, n, i0, i1;
      unsigned char d = __CTYPE_unclassified;

      if ((ENCODING != __ctype_encoding_7_bit) || (((__uwchar_t) wc) <= 0x7f)){
            if (desc < _CTYPE_iswxdigit) {
                  if (((__uwchar_t) wc) <= WC_TABLE_DOMAIN_MAX) {
                        /* From here on, we know wc > 0. */
                        sc = wc & WCctype_TI_MASK;
                        wc >>= WCctype_TI_SHIFT;
                        n = wc & WCctype_II_MASK;
                        wc >>= WCctype_II_SHIFT;

                        i0 = WCctype[wc];
                        i0 <<= WCctype_II_SHIFT;
                        i1 = WCctype[WCctype_II_LEN + i0 + n];
                        i1 <<= (WCctype_TI_SHIFT-1);
                        d = WCctype[WCctype_II_LEN + WCctype_TI_LEN + i1 + (sc >> 1)];

                        d = (sc & 1) ? (d >> 4) : (d & 0xf);
                  } else if ( ((((__uwchar_t)(wc - 0xe0020UL)) <= 0x5f)
                                     || (wc == 0xe0001UL))
                                    || ( (((__uwchar_t)(wc - 0xf0000UL)) < 0x20000UL)
                                           && ((wc & 0xffffU) <= 0xfffdU))
                                    ) {
                        d = __CTYPE_punct;
                  }

#if 0
                  return ( ((unsigned char)(d - ctype_range[2*desc]))
                               <= ctype_range[2*desc + 1] )
                        && ((desc != _CTYPE_iswblank) || (d & 1));
#else
                  return (__UCLIBC_CURLOCALE_DATA).code2flag[d] & desc2flag[desc];
#endif
            }

#ifdef __UCLIBC_MJN3_ONLY__
#warning TODO: xdigit really needs to be handled better.  Remember only for ascii!
#endif /* __UCLIBC_MJN3_ONLY__ */
            /* TODO - Add locale-specific classifications. */
            return (desc == _CTYPE_iswxdigit) ? __C_iswxdigit(wc) : 0;
      }
      return 0;
}

#endif /* defined(L_iswctype) && defined(__UCLIBC_HAS_XLOCALE__) */

#ifdef L_iswctype_l
weak_alias(__iswctype_l, iswctype_l)
#endif /* L_iswctype_l */

#endif /* __LOCALE_C_ONLY */

#ifdef L_iswctype
weak_alias(__iswctype, iswctype)
#endif /* L_iswctype */

#endif
/**********************************************************************/
#if defined(L_towctrans) || defined(L_towctrans_l)

#ifdef __LOCALE_C_ONLY

/* Minimal support for C/POSIX locale. */

#ifndef _tolower
#warning _tolower is undefined!
#define _tolower(c)    tolower(c)
#endif
#ifndef _toupper
#warning _toupper is undefined!
#define _toupper(c)    toupper(c)
#endif

wint_t towctrans(wint_t wc, wctrans_t desc)
{
      if (((unsigned int)(desc - _CTYPE_tolower))
            <= (_CTYPE_toupper - _CTYPE_tolower)
            ) {
            /* Transliteration is either tolower or toupper. */
            if (((__uwchar_t) wc) <= 0x7f) {
                  return (desc == _CTYPE_tolower) ? _tolower(wc) : _toupper(wc);
            }
      } else {
            __set_errno(EINVAL);    /* Invalid transliteration. */
      }
      return wc;
}

#else  /* __LOCALE_C_ONLY */

#ifdef L_towctrans
#define TOWCTRANS(w,d) towctrans(w,d)
#else  /* L_towctrans */
#define TOWCTRANS(w,d) __towctrans_l(w,d, __locale_t locale)
#undef __UCLIBC_CURLOCALE_DATA
#undef __UCLIBC_CURLOCALE
#define __UCLIBC_CURLOCALE_DATA (*locale)
#define __UCLIBC_CURLOCALE (locale)
#endif /* L_towctrans */

#ifdef __UCLIBC_HAS_XLOCALE__
#define TOWLOWER(w,l) __towlower_l(w,l)
#define TOWUPPER(w,l) __towupper_l(w,l)
#else  /* __UCLIBC_HAS_XLOCALE__ */
#define TOWLOWER(w,l) towlower(w)
#define TOWUPPER(w,l) towupper(w)
#endif /* __UCLIBC_HAS_XLOCALE__ */

#if defined(L_towctrans) && defined(__UCLIBC_HAS_XLOCALE__)

wint_t towctrans(wint_t wc, wctrans_t desc)
{
      return __towctrans_l(wc, desc, __UCLIBC_CURLOCALE);
}

#else  /* defined(L_towctrans) && defined(__UCLIBC_HAS_XLOCALE__) */

#ifdef SMALL_UPLOW

wint_t TOWCTRANS(wint_t wc, wctrans_t desc)
{
      unsigned int sc, n, i;
      __uwchar_t u = wc;

      /* TODO - clean up */
      if (ENCODING == __ctype_encoding_7_bit) {
            if ((((__uwchar_t) wc) > 0x7f)
                  || (((unsigned int)(desc - _CTYPE_tolower))
                        > (_CTYPE_toupper - _CTYPE_tolower))
                  ){
                  /* We're in the C/POSIX locale, so ignore non-ASCII values
                   * as well an any mappings other than toupper or tolower. */
                  return wc;
            }
      }

      if (((unsigned int)(desc - _CTYPE_tolower))
            <= (_CTYPE_totitle - _CTYPE_tolower)
            ) {
            if (u <= WC_TABLE_DOMAIN_MAX) {
                  sc = u & ((1 << WCuplow_TI_SHIFT) - 1);
                  u >>= WCuplow_TI_SHIFT;
                  n = u & ((1 << WCuplow_II_SHIFT) - 1);
                  u >>= WCuplow_II_SHIFT;

                  i = ((unsigned int) WCuplow[u]) << WCuplow_II_SHIFT;
                  i = ((unsigned int) WCuplow[WCuplow_II_LEN + i + n])
                        << WCuplow_TI_SHIFT;
                  i = ((unsigned int) WCuplow[WCuplow_II_LEN + WCuplow_TI_LEN
                                                                  + i + sc]) << 1;
                  if (desc == _CTYPE_tolower) {
                        ++i;
                  }
                  wc += WCuplow_diff[i];
                  if (desc == _CTYPE_totitle) {
#ifdef __UCLIBC_MJN3_ONLY__
#warning TODO: Verify totitle special cases!
#endif /* __UCLIBC_MJN3_ONLY__ */
                        /* WARNING! These special cases work for glibc 2.2.4.  Changes
                         * may be needed if the glibc locale tables are updated. */
                        if ( (((__uwchar_t)(wc - 0x1c4)) <= (0x1cc - 0x1c4))
                               || (wc == 0x1f1)
                               ) {
                              ++wc;
                        }
                  }
            }
      } else {
            /* TODO - Deal with other transliterations. */
            __set_errno(EINVAL);
      }

      return wc;
}

#else  /* SMALL_UPLOW */

wint_t TOWCTRANS(wint_t wc, wctrans_t desc)
{
      if (ENCODING == __ctype_encoding_7_bit) {
            if ((((__uwchar_t) wc) > 0x7f)
                  || (((unsigned int)(desc - _CTYPE_tolower))
                        > (_CTYPE_toupper - _CTYPE_tolower))
                  ){
                  /* We're in the C/POSIX locale, so ignore non-ASCII values
                   * as well an any mappings other than toupper or tolower. */
                  return wc;
            }
      }

      if (desc == _CTYPE_tolower) {
            return TOWLOWER(wc, __UCLIBC_CURLOCALE);
      } else if (((unsigned int)(desc - _CTYPE_toupper))
            <= (_CTYPE_totitle - _CTYPE_toupper)
            ) {
            wc = TOWUPPER(wc, __UCLIBC_CURLOCALE);
            if (desc == _CTYPE_totitle) {
#ifdef __UCLIBC_MJN3_ONLY__
#warning TODO: Verify totitle special cases!
#endif /* __UCLIBC_MJN3_ONLY__ */
                  /* WARNING! These special cases work for glibc 2.2.4.  Changes
                   * may be needed if the glibc locale tables are updated. */
                  if ( (((__uwchar_t)(wc - 0x1c4)) <= (0x1cc - 0x1c4))
                         || (wc == 0x1f1)
                         ) {
                        ++wc;
                  }
            }
      } else {
            /* TODO - Deal with other transliterations. */
            __set_errno(EINVAL);
      }
      return wc;
}

#endif /* SMALL_UPLOW */

#endif /* defined(L_towctrans) && defined(__UCLIBC_HAS_XLOCALE__) */

#ifdef L_towctrans_l
weak_alias(__towctrans_l, towctrans_l)
#endif /* L_towctrans_l */

#endif /* __LOCALE_C_ONLY */

#endif
/**********************************************************************/
#ifdef L_wctrans

static const char transstring[] = __CTYPE_TRANSTRING;

wctrans_t wctrans(const char *property)
{
      const unsigned char *p;
      int i;

      p = transstring;
      i = 1;
      do {
            if (!strcmp(property, ++p)) {
                  return i;
            }
            ++i;
            p += p[-1];
      } while (*p);

      /* TODO - Add locale-specific translations. */
      return 0;
}

#endif
/**********************************************************************/
#ifdef L_wctrans_l

#ifdef __UCLIBC_MJN3_ONLY__
#warning REMINDER: Currently wctrans_l simply calls wctrans.
#endif /* __UCLIBC_MJN3_ONLY__ */

wctrans_t __wctrans_l(const char *property, __locale_t locale)
{
      return wctrans(property);
}

weak_alias(__wctrans_l, wctrans_l)

#endif
/**********************************************************************/

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