| wcrtomb.3 (8b8109275c1a583e96171df08e3136151c02279e) | wcrtomb.3 (50c77c6e8b152e463f99c4e9225f5603c02d979c) |
|---|---|
| 1.\" Copyright (c) 2002-2004 Tim J. Robbins 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 10 unchanged lines hidden (view full) --- 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" | 1.\" Copyright (c) 2002-2004 Tim J. Robbins 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 10 unchanged lines hidden (view full) --- 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" |
| 27.Dd April 8, 2004 | 27.Dd May 21, 2013 |
| 28.Dt WCRTOMB 3 29.Os 30.Sh NAME | 28.Dt WCRTOMB 3 29.Os 30.Sh NAME |
| 31.Nm wcrtomb | 31.Nm wcrtomb , 32.Nm c16rtomb , 33.Nm c32rtomb |
| 32.Nd "convert a wide-character code to a character (restartable)" 33.Sh LIBRARY 34.Lb libc 35.Sh SYNOPSIS 36.In wchar.h 37.Ft size_t | 34.Nd "convert a wide-character code to a character (restartable)" 35.Sh LIBRARY 36.Lb libc 37.Sh SYNOPSIS 38.In wchar.h 39.Ft size_t |
| 38.Fn wcrtomb "char * restrict s" "wchar_t wc" "mbstate_t * restrict ps" | 40.Fn wcrtomb "char * restrict s" "wchar_t c" "mbstate_t * restrict ps" 41.In uchar.h 42.Ft size_t 43.Fn c16rtomb "char * restrict s" "char16_t c" "mbstate_t * restrict ps" 44.Ft size_t 45.Fn c32rtomb "char * restrict s" "char32_t c" "mbstate_t * restrict ps" |
| 39.Sh DESCRIPTION 40The | 46.Sh DESCRIPTION 47The |
| 41.Fn wcrtomb 42function stores a multibyte sequence representing the | 48.Fn wcrtomb , 49.Fn c16rtomb 50and 51.Fn c32rtomb 52functions store a multibyte sequence representing the |
| 43wide character | 53wide character |
| 44.Fa wc , | 54.Fa c , |
| 45including any necessary shift sequences, to the 46character array 47.Fa s , 48storing a maximum of 49.Dv MB_CUR_MAX 50bytes. 51.Pp 52If 53.Fa s 54is 55.Dv NULL , | 55including any necessary shift sequences, to the 56character array 57.Fa s , 58storing a maximum of 59.Dv MB_CUR_MAX 60bytes. 61.Pp 62If 63.Fa s 64is 65.Dv NULL , |
| 56.Fn wcrtomb 57behaves as if | 66these functions behave as if |
| 58.Fa s 59pointed to an internal buffer and | 67.Fa s 68pointed to an internal buffer and |
| 60.Fa wc | 69.Fa c |
| 61was a null wide character (L'\e0'). 62.Pp 63The 64.Ft mbstate_t 65argument, 66.Fa ps , 67is used to keep track of the shift state. 68If it is 69.Dv NULL , | 70was a null wide character (L'\e0'). 71.Pp 72The 73.Ft mbstate_t 74argument, 75.Fa ps , 76is used to keep track of the shift state. 77If it is 78.Dv NULL , |
| 70.Fn wcrtomb 71uses an internal, static | 79these functions use an internal, static |
| 72.Vt mbstate_t 73object, which is initialized to the initial conversion state 74at program startup. | 80.Vt mbstate_t 81object, which is initialized to the initial conversion state 82at program startup. |
| 83.Pp 84As certain multibyte characters may only be represented by a series of 8516-bit characters, the 86.Fn c16rtomb 87may need to invoked multiple times before a multibyte sequence is 88returned. |
|
| 75.Sh RETURN VALUES | 89.Sh RETURN VALUES |
| 76The 77.Fn wcrtomb 78functions returns the length (in bytes) of the multibyte sequence | 90These functions return the length (in bytes) of the multibyte sequence |
| 79needed to represent | 91needed to represent |
| 80.Fa wc , | 92.Fa c , |
| 81or 82.Po Vt size_t Pc Ns \-1 83if | 93or 94.Po Vt size_t Pc Ns \-1 95if |
| 84.Fa wc | 96.Fa c |
| 85is not a valid wide character code. 86.Sh ERRORS 87The | 97is not a valid wide character code. 98.Sh ERRORS 99The |
| 88.Fn wcrtomb 89function will fail if: | 100.Fn wcrtomb , 101.Fn c16rtomb 102and 103.Fn c32rtomb 104functions will fail if: |
| 90.Bl -tag -width Er 91.It Bq Er EILSEQ 92An invalid wide character code was specified. 93.It Bq Er EINVAL 94The conversion state is invalid. 95.El 96.Sh SEE ALSO 97.Xr mbrtowc 3 , 98.Xr multibyte 3 , 99.Xr setlocale 3 , 100.Xr wctomb 3 101.Sh STANDARDS 102The | 105.Bl -tag -width Er 106.It Bq Er EILSEQ 107An invalid wide character code was specified. 108.It Bq Er EINVAL 109The conversion state is invalid. 110.El 111.Sh SEE ALSO 112.Xr mbrtowc 3 , 113.Xr multibyte 3 , 114.Xr setlocale 3 , 115.Xr wctomb 3 116.Sh STANDARDS 117The |
| 103.Fn wcrtomb 104function conforms to 105.St -isoC-99 . | 118.Fn wcrtomb , 119.Fn c16rtomb 120and 121.Fn c32rtomb 122functions conform to 123.St -isoC-2011 . |