lib/libc/locale/_wctype.c

   1 /* $NetBSD: _wctype.c,v 1.9 2010/06/13 04:14:57 tnozaki Exp $ */
   2
   3 /*-
   4  * Copyright (c)2008 Citrus Project,
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 /*-
  30  * Copyright (c) 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software contributed to Berkeley by
  34  * Paul Borman at Krystal Technologies.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  */
  60
  61 #include <sys/cdefs.h>
  62 #if defined(LIBC_SCCS) && !defined(lint)
  63 __RCSID("$NetBSD: _wctype.c,v 1.9 2010/06/13 04:14:57 tnozaki Exp $");
  64 #endif /* LIBC_SCCS and not lint */
  65
  66 #include <sys/types.h>
  67 #include <assert.h>
  68 #include <wctype.h>
  69
  70 #include "runetype_local.h"
  71 #include "_wctrans_local.h"
  72 #include "_wctype_local.h"
  73
  74 _RuneType
  75 _runetype_priv(_RuneLocale const *rl, wint_t wc)
  76 {
  77         __nbrune_t wc0;
  78         _RuneRange const *rr;
  79         _RuneEntry *base, *re;
  80         uint32_t x;
  81
  82         _DIAGASSERT(rl != NULL);
  83
  84         if (wc == WEOF)
  85                 return 0U;
  86         if (_RUNE_ISCACHED(wc))
  87                 return rl->rl_runetype[(size_t)wc];
  88         wc0 = (__nbrune_t)wc;
  89         rr = &rl->rl_runetype_ext;
  90         _DIAGASSERT(rr != NULL);
  91         base = rr->rr_rune_ranges;
  92         for (x = rr->rr_nranges; x != (uint32_t)0; x >>= 1) {
  93                 re = base + (x >> 1);
  94                 if (re->re_min <= wc0 && re->re_max >= wc0) {
  95                         if (re->re_rune_types)
  96                                 return re->re_rune_types[wc0 - re->re_min];
  97                         else
  98                                 return re->re_map;
  99                 } else if (wc0 > re->re_max) {
 100                         base = re + 1;
 101                         --x;
 102                 }
 103         }
 104         return (_RuneType)0U;
 105 }
 106
 107 int
 108 _iswctype_priv(_RuneLocale const *rl,
 109     wint_t wc, _WCTypeEntry const *te)
 110 {
 111         return !!(_runetype_priv(rl, wc) & te->te_mask);
 112 }