14297a3b0SGarrett D'Amore /*
2*2d08521bSGarrett D'Amore  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
36b5e5868SGarrett D'Amore  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
44297a3b0SGarrett D'Amore  * Copyright (c) 1989, 1993
54297a3b0SGarrett D'Amore  *	The Regents of the University of California.  All rights reserved.
64297a3b0SGarrett D'Amore  * (c) UNIX System Laboratories, Inc.
74297a3b0SGarrett D'Amore  * All or some portions of this file are derived from material licensed
84297a3b0SGarrett D'Amore  * to the University of California by American Telephone and Telegraph
94297a3b0SGarrett D'Amore  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
104297a3b0SGarrett D'Amore  * the permission of UNIX System Laboratories, Inc.
114297a3b0SGarrett D'Amore  *
124297a3b0SGarrett D'Amore  * This code is derived from software contributed to Berkeley by
134297a3b0SGarrett D'Amore  * Paul Borman at Krystal Technologies.
144297a3b0SGarrett D'Amore  *
154297a3b0SGarrett D'Amore  * Redistribution and use in source and binary forms, with or without
164297a3b0SGarrett D'Amore  * modification, are permitted provided that the following conditions
174297a3b0SGarrett D'Amore  * are met:
184297a3b0SGarrett D'Amore  * 1. Redistributions of source code must retain the above copyright
194297a3b0SGarrett D'Amore  *    notice, this list of conditions and the following disclaimer.
204297a3b0SGarrett D'Amore  * 2. Redistributions in binary form must reproduce the above copyright
214297a3b0SGarrett D'Amore  *    notice, this list of conditions and the following disclaimer in the
224297a3b0SGarrett D'Amore  *    documentation and/or other materials provided with the distribution.
234297a3b0SGarrett D'Amore  * 4. Neither the name of the University nor the names of its contributors
244297a3b0SGarrett D'Amore  *    may be used to endorse or promote products derived from this software
254297a3b0SGarrett D'Amore  *    without specific prior written permission.
264297a3b0SGarrett D'Amore  *
274297a3b0SGarrett D'Amore  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
284297a3b0SGarrett D'Amore  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
294297a3b0SGarrett D'Amore  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
304297a3b0SGarrett D'Amore  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
314297a3b0SGarrett D'Amore  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
324297a3b0SGarrett D'Amore  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
334297a3b0SGarrett D'Amore  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
344297a3b0SGarrett D'Amore  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
354297a3b0SGarrett D'Amore  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
364297a3b0SGarrett D'Amore  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
374297a3b0SGarrett D'Amore  * SUCH DAMAGE.
384297a3b0SGarrett D'Amore  */
394297a3b0SGarrett D'Amore 
404297a3b0SGarrett D'Amore #include "lint.h"
414297a3b0SGarrett D'Amore #include <wctype.h>
424297a3b0SGarrett D'Amore #include <stdio.h>
43*2d08521bSGarrett D'Amore #include "localeimpl.h"
44*2d08521bSGarrett D'Amore #include "lctype.h"
454297a3b0SGarrett D'Amore #include "runetype.h"
464297a3b0SGarrett D'Amore 
474297a3b0SGarrett D'Amore static wint_t
change_case_ext(locale_t loc,wint_t c,int lower)48*2d08521bSGarrett D'Amore change_case_ext(locale_t loc, wint_t c, int lower)
494297a3b0SGarrett D'Amore {
50*2d08521bSGarrett D'Amore 	const _RuneLocale *rl;
51*2d08521bSGarrett D'Amore 	const _RuneRange *rr;
52*2d08521bSGarrett D'Amore 	const _RuneEntry *base, *re;
534297a3b0SGarrett D'Amore 	size_t lim;
544297a3b0SGarrett D'Amore 
554297a3b0SGarrett D'Amore 	if (c < 0 || c == EOF)
564297a3b0SGarrett D'Amore 		return (c);
574297a3b0SGarrett D'Amore 
58*2d08521bSGarrett D'Amore 	rl = loc->runelocale;
59*2d08521bSGarrett D'Amore 	rr = lower ? &rl->__maplower_ext : &rl->__mapupper_ext;
604297a3b0SGarrett D'Amore 	/* Binary search -- see bsearch.c for explanation. */
614297a3b0SGarrett D'Amore 	base = rr->__ranges;
624297a3b0SGarrett D'Amore 	for (lim = rr->__nranges; lim != 0; lim >>= 1) {
634297a3b0SGarrett D'Amore 		re = base + (lim >> 1);
644297a3b0SGarrett D'Amore 		if (re->__min <= c && c <= re->__max) {
654297a3b0SGarrett D'Amore 			return (re->__map + c - re->__min);
664297a3b0SGarrett D'Amore 		} else if (c > re->__max) {
674297a3b0SGarrett D'Amore 			base = re + 1;
684297a3b0SGarrett D'Amore 			lim--;
694297a3b0SGarrett D'Amore 		}
704297a3b0SGarrett D'Amore 	}
714297a3b0SGarrett D'Amore 
724297a3b0SGarrett D'Amore 	return (c);
734297a3b0SGarrett D'Amore }
744297a3b0SGarrett D'Amore 
75*2d08521bSGarrett D'Amore wint_t
towlower_l(wint_t wc,locale_t loc)76*2d08521bSGarrett D'Amore towlower_l(wint_t wc, locale_t loc)
77*2d08521bSGarrett D'Amore {
78*2d08521bSGarrett D'Amore 	return (iswascii(wc) ? __trans_lower[wc] :
79*2d08521bSGarrett D'Amore 	    (wc < 0 || wc >= _CACHED_RUNES) ?
80*2d08521bSGarrett D'Amore 	    change_case_ext(loc, wc, 1) :
81*2d08521bSGarrett D'Amore 	    loc->runelocale->__maplower[wc]);
82*2d08521bSGarrett D'Amore }
83*2d08521bSGarrett D'Amore 
844297a3b0SGarrett D'Amore #undef towlower
854297a3b0SGarrett D'Amore wint_t
towlower(wint_t wc)864297a3b0SGarrett D'Amore towlower(wint_t wc)
874297a3b0SGarrett D'Amore {
88*2d08521bSGarrett D'Amore 	return (iswascii(wc) ? __trans_lower[wc] :
89*2d08521bSGarrett D'Amore 	    (wc < 0 || wc >= _CACHED_RUNES) ?
90*2d08521bSGarrett D'Amore 	    change_case_ext(uselocale(NULL), wc, 1) :
91*2d08521bSGarrett D'Amore 	    uselocale(NULL)->runelocale->__maplower[wc]);
92*2d08521bSGarrett D'Amore }
93*2d08521bSGarrett D'Amore 
94*2d08521bSGarrett D'Amore wint_t
towupper_l(wint_t wc,locale_t loc)95*2d08521bSGarrett D'Amore towupper_l(wint_t wc, locale_t loc)
96*2d08521bSGarrett D'Amore {
97*2d08521bSGarrett D'Amore 	return (iswascii(wc) ? __trans_upper[wc] :
98*2d08521bSGarrett D'Amore 	    (wc < 0 || wc >= _CACHED_RUNES) ?
99*2d08521bSGarrett D'Amore 	    change_case_ext(loc, wc, 0) :
100*2d08521bSGarrett D'Amore 	    loc->runelocale->__mapupper[wc]);
1014297a3b0SGarrett D'Amore }
1024297a3b0SGarrett D'Amore 
1034297a3b0SGarrett D'Amore #undef towupper
1044297a3b0SGarrett D'Amore wint_t
towupper(wint_t wc)1054297a3b0SGarrett D'Amore towupper(wint_t wc)
1064297a3b0SGarrett D'Amore {
107*2d08521bSGarrett D'Amore 	return (iswascii(wc) ? __trans_upper[wc] :
108*2d08521bSGarrett D'Amore 	    (wc < 0 || wc >= _CACHED_RUNES) ?
109*2d08521bSGarrett D'Amore 	    change_case_ext(uselocale(NULL), wc, 0) :
110*2d08521bSGarrett D'Amore 	    uselocale(NULL)->runelocale->__mapupper[wc]);
1114297a3b0SGarrett D'Amore }
112