1/*- 2 * Copyright (c) 2002-2004 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Copyright (c) 2011 The FreeBSD Foundation 6 * All rights reserved. 7 * Portions of this software were developed by David Chisnall 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h>
| 1/*- 2 * Copyright (c) 2002-2004 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Copyright (c) 2011 The FreeBSD Foundation 6 * All rights reserved. 7 * Portions of this software were developed by David Chisnall 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h>
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33__FBSDID("$FreeBSD: head/lib/libc/stdio/fgetwc.c 227753 2011-11-20 14:45:42Z theraven $");
| 33__FBSDID("$FreeBSD: head/lib/libc/stdio/fgetwc.c 234799 2012-04-29 16:28:39Z das $");
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34 35#include "namespace.h" 36#include <errno.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <wchar.h> 40#include "un-namespace.h" 41#include "libc_private.h" 42#include "local.h" 43#include "mblocal.h" 44#include "xlocale_private.h" 45 46/* 47 * MT-safe version. 48 */ 49wint_t 50fgetwc_l(FILE *fp, locale_t locale) 51{ 52 wint_t r; 53 FIX_LOCALE(locale); 54 55 FLOCKFILE(fp); 56 ORIENT(fp, 1); 57 r = __fgetwc(fp, locale); 58 FUNLOCKFILE(fp); 59 60 return (r); 61}
| 34 35#include "namespace.h" 36#include <errno.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <wchar.h> 40#include "un-namespace.h" 41#include "libc_private.h" 42#include "local.h" 43#include "mblocal.h" 44#include "xlocale_private.h" 45 46/* 47 * MT-safe version. 48 */ 49wint_t 50fgetwc_l(FILE *fp, locale_t locale) 51{ 52 wint_t r; 53 FIX_LOCALE(locale); 54 55 FLOCKFILE(fp); 56 ORIENT(fp, 1); 57 r = __fgetwc(fp, locale); 58 FUNLOCKFILE(fp); 59 60 return (r); 61}
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| 62
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62wint_t 63fgetwc(FILE *fp) 64{ 65 return fgetwc_l(fp, __get_locale()); 66} 67 68/*
| 63wint_t 64fgetwc(FILE *fp) 65{ 66 return fgetwc_l(fp, __get_locale()); 67} 68 69/*
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69 * Non-MT-safe version.
| 70 * Internal (non-MPSAFE) version of fgetwc(). This version takes an 71 * mbstate_t argument specifying the initial conversion state. For 72 * wide streams, this should always be fp->_mbstate. On return, *nread 73 * is set to the number of bytes read.
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70 */
| 74 */
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71wint_t 72__fgetwc(FILE *fp, locale_t locale)
| 75wint_t 76__fgetwc_mbs(FILE *fp, mbstate_t *mbs, int *nread, locale_t locale)
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73{ 74 wchar_t wc; 75 size_t nconv; 76 struct xlocale_ctype *l = XLOCALE_CTYPE(locale); 77
| 77{ 78 wchar_t wc; 79 size_t nconv; 80 struct xlocale_ctype *l = XLOCALE_CTYPE(locale); 81
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78 if (fp->_r <= 0 && __srefill(fp))
| 82 if (fp->_r <= 0 && __srefill(fp)) { 83 *nread = 0;
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79 return (WEOF);
| 84 return (WEOF);
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| 85 }
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80 if (MB_CUR_MAX == 1) { 81 /* Fast path for single-byte encodings. */ 82 wc = *fp->_p++; 83 fp->_r--;
| 86 if (MB_CUR_MAX == 1) { 87 /* Fast path for single-byte encodings. */ 88 wc = *fp->_p++; 89 fp->_r--;
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| 90 *nread = 1;
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84 return (wc); 85 }
| 91 return (wc); 92 }
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| 93 *nread = 0;
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86 do {
| 94 do {
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87 nconv = l->__mbrtowc(&wc, fp->_p, fp->_r, &fp->_mbstate);
| 95 nconv = l->__mbrtowc(&wc, fp->_p, fp->_r, mbs);
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88 if (nconv == (size_t)-1) 89 break; 90 else if (nconv == (size_t)-2) 91 continue; 92 else if (nconv == 0) {
| 96 if (nconv == (size_t)-1) 97 break; 98 else if (nconv == (size_t)-2) 99 continue; 100 else if (nconv == 0) {
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93 /* 94 * Assume that the only valid representation of 95 * the null wide character is a single null byte. 96 */
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97 fp->_p++; 98 fp->_r--;
| 101 fp->_p++; 102 fp->_r--;
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| 103 (*nread)++;
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99 return (L'\0'); 100 } else { 101 fp->_p += nconv; 102 fp->_r -= nconv;
| 104 return (L'\0'); 105 } else { 106 fp->_p += nconv; 107 fp->_r -= nconv;
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| 108 *nread += nconv;
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103 return (wc); 104 } 105 } while (__srefill(fp) == 0); 106 fp->_flags |= __SERR; 107 errno = EILSEQ; 108 return (WEOF); 109}
| 109 return (wc); 110 } 111 } while (__srefill(fp) == 0); 112 fp->_flags |= __SERR; 113 errno = EILSEQ; 114 return (WEOF); 115}
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