1 /*
2 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
3 * Copyright (c) 2004 Tim J. Robbins.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include "lint.h"
29 #include "runetype.h"
30 #include <wchar.h>
31 #include <wctype.h>
32 #include "localeimpl.h"
33
34 /*
35 * nextwctype, while exposed on *BSD/MacOS X, is considered "consolidation
36 * private" for illumos. Hence, we keep the _l version static for now.
37 * If we decide to make this public, just remove the static keyword and
38 * put it in the headers and mapfile. (Should fix up the underscore prefix
39 * to __nextwctype() as well.)
40 */
41 static wint_t
nextwctype_l(wint_t wc,wctype_t wct,locale_t loc)42 nextwctype_l(wint_t wc, wctype_t wct, locale_t loc)
43 {
44 size_t lim;
45 const _RuneLocale *rl;
46 const _RuneRange *rr;
47 const _RuneEntry *base, *re;
48 int noinc;
49
50 rl = loc->runelocale;
51 rr = &rl->__runetype_ext;
52
53 noinc = 0;
54 if (wc < _CACHED_RUNES) {
55 wc++;
56 while (wc < _CACHED_RUNES) {
57 if (rl->__runetype[wc] & wct)
58 return (wc);
59 wc++;
60 }
61 wc--;
62 }
63 if (rr->__ranges != NULL && wc < rr->__ranges[0].__min) {
64 wc = rr->__ranges[0].__min;
65 noinc = 1;
66 }
67
68 /* Binary search -- see bsearch.c for explanation. */
69 base = rr->__ranges;
70 for (lim = rr->__nranges; lim != 0; lim >>= 1) {
71 re = base + (lim >> 1);
72 if (re->__min <= wc && wc <= re->__max)
73 goto found;
74 else if (wc > re->__max) {
75 base = re + 1;
76 lim--;
77 }
78 }
79 return (-1);
80 found:
81 if (!noinc)
82 wc++;
83 if (re->__min <= wc && wc <= re->__max) {
84 if (re->__types != NULL) {
85 for (; wc <= re->__max; wc++)
86 if (re->__types[wc - re->__min] & wct)
87 return (wc);
88 } else if (re->__map & wct)
89 return (wc);
90 }
91 while (++re < rr->__ranges + rr->__nranges) {
92 wc = re->__min;
93 if (re->__types != NULL) {
94 for (; wc <= re->__max; wc++)
95 if (re->__types[wc - re->__min] & wct)
96 return (wc);
97 } else if (re->__map & wct)
98 return (wc);
99 }
100 return (-1);
101 }
102
103 /*
104 * External, but consolidation private routine.
105 */
106 wint_t
__nextwctype(wint_t wc,wctype_t wct)107 __nextwctype(wint_t wc, wctype_t wct)
108 {
109 return (nextwctype_l(wc, wct, uselocale(NULL)));
110 }
111