17438fc3aSTim J. Robbins /*- 274f90defSTim J. Robbins * Copyright (c) 2002-2004 Tim J. Robbins. 3998e1248STim J. Robbins * All rights reserved. 47438fc3aSTim J. Robbins * 57438fc3aSTim J. Robbins * Redistribution and use in source and binary forms, with or without 67438fc3aSTim J. Robbins * modification, are permitted provided that the following conditions 77438fc3aSTim J. Robbins * are met: 87438fc3aSTim J. Robbins * 1. Redistributions of source code must retain the above copyright 97438fc3aSTim J. Robbins * notice, this list of conditions and the following disclaimer. 107438fc3aSTim J. Robbins * 2. Redistributions in binary form must reproduce the above copyright 117438fc3aSTim J. Robbins * notice, this list of conditions and the following disclaimer in the 127438fc3aSTim J. Robbins * documentation and/or other materials provided with the distribution. 137438fc3aSTim J. Robbins * 14998e1248STim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 157438fc3aSTim J. Robbins * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 167438fc3aSTim J. Robbins * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17998e1248STim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 187438fc3aSTim J. Robbins * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 197438fc3aSTim J. Robbins * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 207438fc3aSTim J. Robbins * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 217438fc3aSTim J. Robbins * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 227438fc3aSTim J. Robbins * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 237438fc3aSTim J. Robbins * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 247438fc3aSTim J. Robbins * SUCH DAMAGE. 257438fc3aSTim J. Robbins */ 267438fc3aSTim J. Robbins 277438fc3aSTim J. Robbins #include <sys/cdefs.h> 287438fc3aSTim J. Robbins __FBSDID("$FreeBSD$"); 297438fc3aSTim J. Robbins 30f0c6c306STim J. Robbins #include <errno.h> 31998e1248STim J. Robbins #include <limits.h> 327438fc3aSTim J. Robbins #include <stdlib.h> 33998e1248STim J. Robbins #include <string.h> 34998e1248STim J. Robbins #include <wchar.h> 356155c34aSTim J. Robbins #include "mblocal.h" 367438fc3aSTim J. Robbins 377438fc3aSTim J. Robbins int 38b6f33850STim J. Robbins mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n) 397438fc3aSTim J. Robbins { 4074f90defSTim J. Robbins static const mbstate_t initial; 4174f90defSTim J. Robbins static mbstate_t mbs; 42998e1248STim J. Robbins size_t rval; 437438fc3aSTim J. Robbins 4474f90defSTim J. Robbins if (s == NULL) { 45b6f33850STim J. Robbins /* No support for state dependent encodings. */ 4674f90defSTim J. Robbins mbs = initial; 47b6f33850STim J. Robbins return (0); 4874f90defSTim J. Robbins } 496155c34aSTim J. Robbins rval = __mbrtowc(pwc, s, n, &mbs); 50998e1248STim J. Robbins if (rval == (size_t)-1 || rval == (size_t)-2) 51998e1248STim J. Robbins return (-1); 52998e1248STim J. Robbins if (rval > INT_MAX) { 53998e1248STim J. Robbins errno = ERANGE; 54c5929b30STim J. Robbins return (-1); 55f0c6c306STim J. Robbins } 56998e1248STim J. Robbins return ((int)rval); 577438fc3aSTim J. Robbins } 58