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1<!-- Creator : groff version 1.22.3 -->
2<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
3"http://www.w3.org/TR/html4/loose.dtd">
4<html>
5<head>
6<meta name="generator" content="groff -Thtml, see www.gnu.org">
7<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
8<meta name="Content-Style" content="text/css">
9<style type="text/css">
10 p { margin-top: 0; margin-bottom: 0; vertical-align: top }
11 pre { margin-top: 0; margin-bottom: 0; vertical-align: top }
12 table { margin-top: 0; margin-bottom: 0; vertical-align: top }
13 h1 { text-align: center }
14</style>
15<title>ICONVCTL</title>
16
17</head>
18<body>
19
20<h1 align="center">ICONVCTL</h1>
21
22<a href="#NAME">NAME</a><br>
23<a href="#SYNOPSIS">SYNOPSIS</a><br>
24<a href="#DESCRIPTION">DESCRIPTION</a><br>
25<a href="#REQUEST VALUES">REQUEST VALUES</a><br>
26<a href="#RETURN VALUE">RETURN VALUE</a><br>
27<a href="#ERRORS">ERRORS</a><br>
28<a href="#CONFORMING TO">CONFORMING TO</a><br>
29<a href="#SEE ALSO">SEE ALSO</a><br>
30
31<hr>
32
33
34<h2>NAME
35<a name="NAME"></a>
36</h2>
37
38
39<p style="margin-left:11%; margin-top: 1em">iconvctl
40&minus; control iconv behavior</p>
41
42<h2>SYNOPSIS
43<a name="SYNOPSIS"></a>
44</h2>
45
46
47<p style="margin-left:11%; margin-top: 1em"><b>#include
48&lt;iconv.h&gt;</b></p>
49
50<p style="margin-left:11%; margin-top: 1em"><b>int iconvctl
51(iconv_t</b> <i>cd</i> <b>, int</b> <i>request</i><b>, void
52*</b> <i>argument</i><b>);</b></p>
53
54<h2>DESCRIPTION
55<a name="DESCRIPTION"></a>
56</h2>
57
58
59<p style="margin-left:11%; margin-top: 1em">The argument
60<i>cd</i> must be a conversion descriptor created using the
61function <b>iconv_open</b>.</p>
62
63
64<p style="margin-left:11%; margin-top: 1em"><b>iconvctl</b>
65queries or adjusts the behavior of the <b>iconv</b>
66function, when invoked with the specified conversion
67descriptor, depending on the request value.</p>
68
69<h2>REQUEST VALUES
70<a name="REQUEST VALUES"></a>
71</h2>
72
73
74<p style="margin-left:11%; margin-top: 1em">The following
75are permissible values for the <i>request</i> parameter.
76<b><br>
77ICONV_TRIVIALP</b></p>
78
79<p style="margin-left:22%;"><i>argument</i> should be an
80<b>int *</b> which will receive 1 if the conversion is
81trivial, or 0 otherwise.</p>
82
83
84<p style="margin-left:11%;"><b>ICONV_GET_TRANSLITERATE</b></p>
85
86<p style="margin-left:22%;"><i>argument</i> should be an
87<b>int *</b> which will receive 1 if transliteration is
88enabled in the conversion, or 0 otherwise.</p>
89
90
91<p style="margin-left:11%;"><b>ICONV_SET_TRANSLITERATE</b></p>
92
93<p style="margin-left:22%;"><i>argument</i> should be a
94<b>const int *</b>, pointing to an <b>int</b> value. A
95non-zero value is used to enable transliteration in the
96conversion. A zero value disables it.</p>
97
98
99<p style="margin-left:11%;"><b>ICONV_GET_DISCARD_ILSEQ</b></p>
100
101<p style="margin-left:22%;"><i>argument</i> should be an
102<b>int *</b> which will receive 1 if &quot;illegal sequence
103discard and continue&quot; is enabled in the conversion, or
1040 otherwise.</p>
105
106
107<p style="margin-left:11%;"><b>ICONV_SET_DISCARD_ILSEQ</b></p>
108
109<p style="margin-left:22%;"><i>argument</i> should be a
110<b>const int *</b>, pointing to an <b>int</b> value. A
111non-zero value is used to enable &quot;illegal sequence
112discard and continue&quot; in the conversion. A zero value
113disables it.</p>
114
115<h2>RETURN VALUE
116<a name="RETURN VALUE"></a>
117</h2>
118
119
120<p style="margin-left:11%; margin-top: 1em">The
121<b>iconvctl</b> function returns 0 if it succeeds. In case
122of error, it sets <b>errno</b> and returns &minus;1.</p>
123
124<h2>ERRORS
125<a name="ERRORS"></a>
126</h2>
127
128
129<p style="margin-left:11%; margin-top: 1em">The following
130errors can occur, among others:</p>
131
132<table width="100%" border="0" rules="none" frame="void"
133 cellspacing="0" cellpadding="0">
134<tr valign="top" align="left">
135<td width="11%"></td>
136<td width="9%">
137
138
139<p><b>EINVAL</b></p></td>
140<td width="2%"></td>
141<td width="35%">
142
143
144<p>The request is invalid.</p></td>
145<td width="43%">
146</td></tr>
147</table>
148
149<h2>CONFORMING TO
150<a name="CONFORMING TO"></a>
151</h2>
152
153
154<p style="margin-left:11%; margin-top: 1em">This function
155is implemented only in GNU libiconv and not in other
156<b>iconv</b> implementations. It is not backed by a
157standard. You can test for its presence through
158<b>(_LIBICONV_VERSION &gt;= 0x0108)</b>.</p>
159
160<h2>SEE ALSO
161<a name="SEE ALSO"></a>
162</h2>
163
164
165
166<p style="margin-left:11%; margin-top: 1em"><b>iconv_open</b>(3)
167<b>iconv</b>(3)</p>
168<hr>
169</body>
170</html>
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