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/* |
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* Copyright (c) 1991 The Regents of the University of California. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#if defined(LIBC_SCCS) && !defined(lint) |
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static char *rcsid = "$OpenBSD: multibyte.c,v 1.4 2003/06/02 20:18:38 millert Exp $"; |
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#endif /* LIBC_SCCS and not lint */ |
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#include <stdlib.h> |
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/* |
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* Stub multibyte character functions. |
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* This cheezy implementation is fixed to the native single-byte |
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* character set. |
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*/ |
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int |
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mblen(s, n) |
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const char *s; |
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size_t n; |
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{ |
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if (s == NULL || *s == '\0') |
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return 0; |
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if (n == 0) |
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return -1; |
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return 1; |
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} |
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/*ARGSUSED*/ |
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int |
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mbtowc(pwc, s, n) |
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wchar_t *pwc; |
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const char *s; |
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size_t n; |
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{ |
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if (s == NULL) |
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return 0; |
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if (n == 0) |
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return -1; |
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if (pwc) |
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*pwc = (wchar_t) *s; |
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return (*s != '\0'); |
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} |
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/*ARGSUSED*/ |
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int |
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wctomb(char *s, wchar_t wchar) |
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{ |
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if (s == NULL) |
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return 0; |
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*s = (char) wchar; |
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return 1; |
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} |
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/*ARGSUSED*/ |
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size_t |
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mbstowcs(pwcs, s, n) |
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wchar_t *pwcs; |
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const char *s; |
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size_t n; |
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{ |
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int count = 0; |
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if (n != 0) { |
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do { |
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if ((*pwcs++ = (wchar_t) *s++) == 0) |
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break; |
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count++; |
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} while (--n != 0); |
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} |
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return count; |
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} |
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/*ARGSUSED*/ |
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size_t |
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wcstombs(s, pwcs, n) |
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char *s; |
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const wchar_t *pwcs; |
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size_t n; |
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{ |
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int count = 0; |
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if (n != 0) { |
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do { |
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if ((*s++ = (char) *pwcs++) == 0) |
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break; |
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count++; |
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} while (--n != 0); |
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} |
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return count; |
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} |
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