17438fc3aSTim J. Robbins /*- 27438fc3aSTim J. Robbins * Copyright (c) 1993 37438fc3aSTim J. Robbins * The Regents of the University of California. All rights reserved. 47438fc3aSTim J. Robbins * 57438fc3aSTim J. Robbins * This code is derived from software contributed to Berkeley by 67438fc3aSTim J. Robbins * Paul Borman at Krystal Technologies. 77438fc3aSTim J. Robbins * 87438fc3aSTim J. Robbins * Redistribution and use in source and binary forms, with or without 97438fc3aSTim J. Robbins * modification, are permitted provided that the following conditions 107438fc3aSTim J. Robbins * are met: 117438fc3aSTim J. Robbins * 1. Redistributions of source code must retain the above copyright 127438fc3aSTim J. Robbins * notice, this list of conditions and the following disclaimer. 137438fc3aSTim J. Robbins * 2. Redistributions in binary form must reproduce the above copyright 147438fc3aSTim J. Robbins * notice, this list of conditions and the following disclaimer in the 157438fc3aSTim J. Robbins * documentation and/or other materials provided with the distribution. 167438fc3aSTim J. Robbins * 3. All advertising materials mentioning features or use of this software 177438fc3aSTim J. Robbins * must display the following acknowledgement: 187438fc3aSTim J. Robbins * This product includes software developed by the University of 197438fc3aSTim J. Robbins * California, Berkeley and its contributors. 207438fc3aSTim J. Robbins * 4. Neither the name of the University nor the names of its contributors 217438fc3aSTim J. Robbins * may be used to endorse or promote products derived from this software 227438fc3aSTim J. Robbins * without specific prior written permission. 237438fc3aSTim J. Robbins * 247438fc3aSTim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 257438fc3aSTim J. Robbins * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 267438fc3aSTim J. Robbins * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 277438fc3aSTim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 287438fc3aSTim J. Robbins * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 297438fc3aSTim J. Robbins * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 307438fc3aSTim J. Robbins * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 317438fc3aSTim J. Robbins * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 327438fc3aSTim J. Robbins * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 337438fc3aSTim J. Robbins * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 347438fc3aSTim J. Robbins * SUCH DAMAGE. 357438fc3aSTim J. Robbins */ 367438fc3aSTim J. Robbins 377438fc3aSTim J. Robbins #include <sys/cdefs.h> 387438fc3aSTim J. Robbins __FBSDID("$FreeBSD$"); 397438fc3aSTim J. Robbins 40f0c6c306STim J. Robbins #include <errno.h> 417438fc3aSTim J. Robbins #include <stdlib.h> 427438fc3aSTim J. Robbins #include <stddef.h> 437438fc3aSTim J. Robbins #include <rune.h> 447438fc3aSTim J. Robbins 457438fc3aSTim J. Robbins int 46b6f33850STim J. Robbins mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n) 477438fc3aSTim J. Robbins { 48b6f33850STim J. Robbins const char *e; 497438fc3aSTim J. Robbins rune_t r; 507438fc3aSTim J. Robbins 51b6f33850STim J. Robbins if (s == NULL || *s == '\0') 52b6f33850STim J. Robbins /* No support for state dependent encodings. */ 53b6f33850STim J. Robbins return (0); 547438fc3aSTim J. Robbins 55f0c6c306STim J. Robbins if ((r = sgetrune(s, n, &e)) == _INVALID_RUNE) { 56f0c6c306STim J. Robbins errno = EILSEQ; 577438fc3aSTim J. Robbins return (s - e); 58f0c6c306STim J. Robbins } 59b6f33850STim J. Robbins if (pwc != NULL) 607438fc3aSTim J. Robbins *pwc = r; 617438fc3aSTim J. Robbins return (e - s); 627438fc3aSTim J. Robbins } 63