1 .\" Copyright (c) 2009 Gabor Kovesdan <gabor@FreeBSD.org>
2 .\" All rights reserved.
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25 .\" Portions of this text are reprinted and reproduced in electronic form
26 .\" from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology --
27 .\" Portable Operating System Interface (POSIX), The Open Group Base
28 .\" Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
29 .\" Electrical and Electronics Engineers, Inc and The Open Group. In the
30 .\" event of any discrepancy between this version and the original IEEE and
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35 .\" $FreeBSD: head/lib/libc/iconv/iconvctl.3 233577 2012-03-27 20:50:14Z joel $
37 .Dd September 19, 2013
42 .Nd controlling and diagnostical facility for
49 .Fn iconvctl "iconv_t cd" "int request" "void *argument"
53 function can retrieve or set specific conversion
56 conversion descriptor.
59 parameter specifies the operation to accomplish and
61 is an operation-specific argument.
63 The possible operations are the following:
64 .Bl -tag -width indent
70 variable, which is set to 1 if the encoding is trivial one, i.e.
71 the input and output encodings are the same.
72 Otherwise, the variable will be 0.
73 .It ICONV_GET_TRANSLITERATE
74 Determines if transliteration is enabled.
75 The answer is stored in
79 It will be set to 1 if this feature is enabled or set to 0 otherwise.
80 .It ICONV_SET_TRANSLITERATE
81 Enables transliteration if
85 set to 1 or disables it if
88 .It ICONV_GET_DISCARD_ILSEQ
89 Determines if illegal sequences are discarded or not.
90 The answer is stored in
94 It will be set to 1 if this feature is enabled or set to 0 otherwise.
95 .It ICONV_SET_DISCARD_ILSEQ
96 Sets whether illegal sequences are discarded or not.
100 set to 1 or disables it if
104 Sets callback functions, which will be called back after successful
106 The callback functions are stored in a
107 .Ft struct iconv_hooks
108 variable, which is passed to
114 .\" XXX: fallbacks are unimplemented and trying to set them will always
115 .\" return EOPNOTSUPP but definitions are provided for source-level
117 .\".It ICONV_SET_FALLBACKS
118 .\"Sets callback functions, which will be called back after failed
120 .\"The callback functions are stored in a
121 .\".Ft struct iconv_fallbacks
122 .\"variable, which is passed to
128 Upon successful completion
131 Otherwise, \-1 is returned and errno is set to
132 specify the kind of error.
136 function may cause an error in the following cases:
139 Unknown or unimplemented operation.
141 The conversion descriptor specified by
151 facility is a non-standard extension, which appeared in
152 the GNU implementation and was adopted in
154 for compatibility's sake.
156 This manual page was written by
157 .An Gabor Kovesdan Aq gabor@FreeBSD.org .
159 Transliteration is enabled in this implementation by default, so it
160 is impossible by design to turn it off.
161 Accordingly, trying to turn it off will always fail and \-1 will be
163 Getting the transliteration state will always succeed and indicate
164 that it is turned on, though.