1 '\" te
2 .\" Copyright (c) 1992, X/Open Company Limited. All Rights Reserved. Portions Copyright (c) 2003, Sun Microsystems, Inc. All Rights Reserved.
3 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
4 .\" http://www.opengroup.org/bookstore/.
5 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
6 .\" This notice shall appear on any product containing this material.
7 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
8 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
9 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
10 .TH WCRTOMB 3C "Nov 1, 2003"
11 .SH NAME
12 wcrtomb \- convert a wide-character code to a character (restartable)
13 .SH SYNOPSIS
14 .LP
15 .nf
16 #include <stdio.h>
17
18 \fBsize_t\fR \fBwcrtomb\fR(\fBchar *restrict\fR \fIs\fR, \fBwchar_t\fR \fIwc\fR, \fBmbstate_t *restrict\fR \fIps\fR);
19 .fi
20
21 .SH DESCRIPTION
22 .sp
23 .LP
24 If \fIs\fR is a null pointer, the \fBwcrtomb()\fR function is equivalent to the
25 call:
26 .sp
27 .LP
28 wcrtomb(buf, L'\e0', ps)
29 .sp
30 .LP
31 where \fIbuf\fR is an internal buffer.
32 .sp
33 .LP
34 If \fIs\fR is not a null pointer, the \fBwcrtomb()\fR function determines the
35 number of bytes needed to represent the character that corresponds to the
36 wide-character given by \fIwc\fR (including any shift sequences), and stores
37 the resulting bytes in the array whose first element is pointed to by \fIs\fR.
38 At most \fBMB_CUR_MAX\fR bytes are stored. If \fIwc\fR is a null
39 wide-character, a null byte is stored, preceded by any shift sequence needed to
40 restore the initial shift state. The resulting state described is the initial
41 conversion state.
42 .sp
43 .LP
44 If \fIps\fR is a null pointer, the \fBwcrtomb()\fR function uses its own
45 internal \fBmbstate_t\fR object, which is initialized at program startup to the
46 initial conversion state. Otherwise, the \fBmbstate_t\fR object pointed to
47 by \fIps\fR is used to completely describe the current conversion state of the
48 associated character sequence. Solaris will behave as if no function defined in
49 the Solaris Reference Manual calls \fBwcrtomb()\fR.
50 .sp
51 .LP
52 The behavior of this function is affected by the \fBLC_CTYPE\fR category of the
53 current locale. See \fBenviron\fR(5).
54 .SH RETURN VALUES
55 .sp
56 .LP
57 The \fBwcrtomb()\fR function returns the number of bytes stored in the array
58 object (including any shift sequences). When \fIwc\fR is not a valid
59 wide-character, an encoding error occurs. In this case, the function stores
60 the value of the macros \fBEILSEQ\fR in \fBerrno\fR and returns
61 \fB(size_t)\(mi1\fR; the conversion state is undefined.
62 .SH ERRORS
63 .sp
64 .LP
65 The \fBwcrtomb()\fR function may fail if:
66 .sp
67 .ne 2
68 .na
69 \fB\fBEINVAL\fR\fR
70 .ad
71 .RS 10n
72 The \fIps\fR argument points to an object that contains an invalid conversion
73 state.
74 .RE
75
76 .sp
77 .ne 2
78 .na
79 \fB\fBEILSEQ\fR\fR
80 .ad
81 .RS 10n
82 Invalid wide-character code is detected.
83 .RE
84
85 .SH USAGE
86 .sp
87 .LP
88 If \fIps\fR is not a null pointer, \fBwcrtomb()\fR uses the \fBmbstate_t\fR
89 object pointed to by \fIps\fR and the function can be used safely in
90 multithreaded applications, as long as \fBsetlocale\fR(3C) is not being called
91 to change the locale. If \fIps\fR is a null pointer, \fBwcrtomb()\fR uses its
92 internal \fBmbstate_t\fR object and the function is Unsafe in multithreaded
93 applications.
94 .SH ATTRIBUTES
95 .sp
96 .LP
97 See \fBattributes\fR(5) for descriptions of the following attributes:
98 .sp
99
100 .sp
101 .TS
102 box;
103 c | c
104 l | l .
105 ATTRIBUTE TYPE ATTRIBUTE VALUE
106 _
107 Interface Stability Standard
108 _
109 MT-Level See NOTES below
110 .TE
111
112 .SH SEE ALSO
113 .sp
114 .LP
115 \fBmbsinit\fR(3C), \fBsetlocale\fR(3C), \fBattributes\fR(5),
116 \fBstandards\fR(5), \fBenviron\fR(5)
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1 '\" te
2 .\" Copyright 2014 Garrett D'Amore <garrett@damore.org>
3 .\" Copyright (c) 1992, X/Open Company Limited. All Rights Reserved. Portions Copyright (c) 2003, Sun Microsystems, Inc. All Rights Reserved.
4 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
5 .\" http://www.opengroup.org/bookstore/.
6 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
7 .\" This notice shall appear on any product containing this material.
8 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
9 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
10 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
11 .TH WCRTOMB 3C "Jun 24, 2014"
12 .SH NAME
13 wcrtomb, wcrtomb_l \- convert a wide-character code to a character (restartable)
14 .SH SYNOPSIS
15 .LP
16 .nf
17 #include <stdio.h>
18
19 \fBsize_t\fR \fBwcrtomb\fR(\fBchar *restrict\fR \fIs\fR, \fBwchar_t\fR \fIwc\fR, \fBmbstate_t *restrict\fR \fIps\fR);
20 .fi
21 .LP
22 .nf
23 #include <stdio.h>
24 #include <xlocale.h>
25
26 \fBsize_t\fR \fBwcrtomb_l\fR(\fBchar *restrict\fR \fIs\fR, \fBwchar_t\fR \fIwc\fR, \fBmbstate_t *restrict\fR \fIps\fR,
27 \fBlocale_t\fR \fIloc\fR);
28 .fi
29 .SH DESCRIPTION
30 .LP
31 If \fIs\fR is a null pointer, the \fBwcrtomb()\fR function is equivalent to the
32 call:
33 .IP
34 \fBwcrtomb\fR(\fIbuf\fR, L'\e0', \fIps\fR);
35 .LP
36 where \fIbuf\fR is an internal buffer.
37 .LP
38 If \fIs\fR is not a null pointer, the \fBwcrtomb()\fR function determines the
39 number of bytes needed to represent the character that corresponds to the
40 wide-character given by \fIwc\fR (including any shift sequences), and stores
41 the resulting bytes in the array whose first element is pointed to by \fIs\fR.
42 At most \fBMB_CUR_MAX\fR bytes are stored. If \fIwc\fR is a null
43 wide-character, a null byte is stored, preceded by any shift sequence needed to
44 restore the initial shift state. The resulting state described is the initial
45 conversion state.
46 .LP
47 If \fIps\fR is a null pointer, the \fBwcrtomb()\fR function uses its own
48 internal \fBmbstate_t\fR object, which is initialized at program startup to the
49 initial conversion state. Otherwise, the \fBmbstate_t\fR object pointed to
50 by \fIps\fR is used to completely describe the current conversion state of the
51 associated character sequence. The system will behave as if no function
52 defined in the Reference Manual calls \fBwcrtomb()\fR.
53 .LP
54 The behavior of \fBwcrtomb()\fR is affected by the \fBLC_CTYPE\fR category of the
55 current locale. See \fBenviron\fR(5). The function \fBwcrtomb_l()\fR behaves
56 identically to \fBwcrtomb()\fR, except instead of operating in the current
57 locale, it operates in the locale specified by \fIloc\fR.
58 .SH RETURN VALUES
59 .LP
60 The \fBwcrtomb()\fR function returns the number of bytes stored in the array
61 object (including any shift sequences). When \fIwc\fR is not a valid
62 wide-character, an encoding error occurs. In this case, the function stores
63 the value of the macros \fBEILSEQ\fR in \fBerrno\fR and returns
64 \fB(size_t)\(mi1\fR; the conversion state is undefined.
65 .SH ERRORS
66 .LP
67 The \fBwcrtomb()\fR function may fail if:
68 .sp
69 .ne 2
70 .na
71 \fB\fBEINVAL\fR\fR
72 .ad
73 .RS 10n
74 The \fIps\fR argument points to an object that contains an invalid conversion
75 state.
76 .RE
77
78 .sp
79 .ne 2
80 .na
81 \fB\fBEILSEQ\fR\fR
82 .ad
83 .RS 10n
84 Invalid wide-character code is detected.
85 .RE
86 .SH ATTRIBUTES
87 .LP
88 See \fBattributes\fR(5) for descriptions of the following attributes:
89 .TS
90 box;
91 c | c
92 l | l .
93 ATTRIBUTE TYPE ATTRIBUTE VALUE
94 _
95 Interface Stability See below.
96 _
97 MT-Level See below.
98 .TE
99
100 .LP
101 The \fBwcrtomb()\fR function is Standard. The
102 \fBwcrtomb_l()\fR function is Uncommitted.
103 .LP
104 If \fIps\fR is a null pointer, these functions should be considered Unsafe
105 for use in multithreaded applications. Otherwise, they are MT-Safe.
106 .SH SEE ALSO
107 .LP
108 \fBmbsinit\fR(3C), \fBnewlocale\fR(3C), \fBsetlocale\fR(3C),
109 \fBuselocale\fR(3C), \fBattributes\fR(5),
110 \fBstandards\fR(5), \fBenviron\fR(5)
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