111695Sache/*- 211695Sache * Copyright (c) 1993 311695Sache * The Regents of the University of California. All rights reserved. 411695Sache * 511695Sache * This code is derived from software contributed to Berkeley by 611695Sache * Paul Borman at Krystal Technologies. 711695Sache * 8227753Stheraven * Copyright (c) 2011 The FreeBSD Foundation 9227753Stheraven * All rights reserved. 10227753Stheraven * Portions of this software were developed by David Chisnall 11227753Stheraven * under sponsorship from the FreeBSD Foundation. 12227753Stheraven * 1311695Sache * Redistribution and use in source and binary forms, with or without 1411695Sache * modification, are permitted provided that the following conditions 1511695Sache * are met: 1611695Sache * 1. Redistributions of source code must retain the above copyright 1711695Sache * notice, this list of conditions and the following disclaimer. 1811695Sache * 2. Redistributions in binary form must reproduce the above copyright 1911695Sache * notice, this list of conditions and the following disclaimer in the 2011695Sache * documentation and/or other materials provided with the distribution. 2111695Sache * 4. Neither the name of the University nor the names of its contributors 2211695Sache * may be used to endorse or promote products derived from this software 2311695Sache * without specific prior written permission. 2411695Sache * 2511695Sache * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2611695Sache * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2711695Sache * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2811695Sache * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2911695Sache * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3011695Sache * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3111695Sache * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3211695Sache * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3311695Sache * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3411695Sache * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3511695Sache * SUCH DAMAGE. 3611695Sache */ 3711695Sache 3892986Sobrien#include <sys/cdefs.h> 3992986Sobrien__FBSDID("$FreeBSD$"); 4092986Sobrien 41150065Sstefanf#include <ctype.h> 423050Sache#include <stdio.h> 43132820Stjr#include <runetype.h> 44227753Stheraven#include <wchar.h> 45227753Stheraven#include "mblocal.h" 463050Sache 47102227Smike__ct_rune_t 48227753Stheraven___tolower_l(c, l) 49102227Smike __ct_rune_t c; 50227753Stheraven locale_t l; 513050Sache{ 52129065Stjr size_t lim; 53227753Stheraven FIX_LOCALE(l); 54227753Stheraven _RuneRange *rr = &XLOCALE_CTYPE(l)->runes->__maplower_ext; 55129065Stjr _RuneEntry *base, *re; 563050Sache 5714812Sache if (c < 0 || c == EOF) 5814812Sache return(c); 5914812Sache 60129065Stjr /* Binary search -- see bsearch.c for explanation. */ 61130961Stjr base = rr->__ranges; 62130961Stjr for (lim = rr->__nranges; lim != 0; lim >>= 1) { 63129065Stjr re = base + (lim >> 1); 64130961Stjr if (re->__min <= c && c <= re->__max) 65130961Stjr return (re->__map + c - re->__min); 66130961Stjr else if (c > re->__max) { 67129065Stjr base = re + 1; 68129065Stjr lim--; 69129065Stjr } 703050Sache } 7161218Sache 723050Sache return(c); 733050Sache} 74227753Stheraven__ct_rune_t 75227753Stheraven___tolower(c) 76227753Stheraven __ct_rune_t c; 77227753Stheraven{ 78227753Stheraven return ___tolower_l(c, __get_locale()); 79227753Stheraven} 80