163 lines
5.0 KiB
Groff
163 lines
5.0 KiB
Groff
.\" Copyright (c) 2009 Gabor Kovesdan <gabor@FreeBSD.org>
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" Portions of this text are reprinted and reproduced in electronic form
|
|
.\" 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 this version 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd November 7, 2009
|
|
.Dt ICONVCTL 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm iconvctl
|
|
.Nd controlling and diagnostical facility for
|
|
.Xr iconv 3
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In iconv.h
|
|
.Ft int
|
|
.Fn iconvctl "iconv_t cd" "int request" "void *argument"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn iconvctl
|
|
function can retrieve or set specific conversion
|
|
setting from the
|
|
.Fa cd
|
|
conversion descriptor.
|
|
The
|
|
.Fa request
|
|
parameter specifies the operation to accomplish and
|
|
.Fa argument
|
|
is an operation-specific argument.
|
|
.Pp
|
|
The possible operations are the following:
|
|
.Bl -tag -width -indent
|
|
.It ICONV_TRIVIALP
|
|
In this case
|
|
.Fa argument
|
|
is an
|
|
.Ft int *
|
|
variable, which is set to 1 if the encoding is trivial one, i.e.
|
|
the input and output encodings are the same.
|
|
Otherwise, the variable will be 0.
|
|
.It ICONV_GET_TRANSLITERATE
|
|
Determines if transliteration is enabled.
|
|
The answer is stored in
|
|
.Fa argument ,
|
|
which is of
|
|
.Ft int * .
|
|
It will be set to 1 if this feature is enabled or set to 0 otherwise.
|
|
.It ICONV_SET_TRANSLITERATE
|
|
Enables transliteration if
|
|
.Fa argument ,
|
|
which is of
|
|
.Ft int *
|
|
set to 1 or disables it if
|
|
.Fa argument
|
|
is set to 0.
|
|
.It ICONV_GET_DISCARD_ILSEQ
|
|
Determines if illegal sequences are discarded or not.
|
|
The answer is stored in
|
|
.Fa argument ,
|
|
which is of
|
|
.Ft int * .
|
|
It will be set to 1 if this feature is enabled or set to 0 otherwise.
|
|
.It ICONV_SET_DISCARD_ILSEQ
|
|
Sets whether illegal sequences are discarded or not.
|
|
.Fa argument ,
|
|
which is of
|
|
.Ft int *
|
|
set to 1 or disables it if
|
|
.Fa argument
|
|
is set to 0.
|
|
.It ICONV_SET_HOOKS
|
|
Sets callback functions, which will be called back after successful
|
|
conversions.
|
|
The callback functions are stored in a
|
|
.Ft struct iconv_hooks
|
|
variable, which is passed to
|
|
.Nm
|
|
via
|
|
.Fa argument
|
|
by its address.
|
|
.\" XXX: fallbacks are unimplemented and trying to set them will always
|
|
.\" return EOPNOTSUPP but definitions are provided for source-level
|
|
.\" compatibility.
|
|
.\".It ICONV_SET_FALLBACKS
|
|
.\"Sets callback functions, which will be called back after failed
|
|
.\"conversions.
|
|
.\"The callback functions are stored in a
|
|
.\".Ft struct iconv_fallbacks
|
|
.\"variable, which is passed to
|
|
.\".Nm
|
|
.\"via
|
|
.\".Fa argument
|
|
.\"by its address.
|
|
.Sh RETURN VALUES
|
|
Upon successful completion
|
|
.Fn iconvctl ,
|
|
returns 0.
|
|
Otherwise, \-1 is returned and errno is set to
|
|
specify the kind of error.
|
|
.Sh ERRORS
|
|
The
|
|
.Fn iconvctl
|
|
function may cause an error in the following cases:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
Unknown or unimplemented operation.
|
|
.It Bq Er EBADF
|
|
The conversion descriptor specified by
|
|
.Fa cd
|
|
is invalid.
|
|
.Sh SEE ALSO
|
|
.Xr iconv 1 ,
|
|
.Xr iconv 3
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
facility is a non-standard extension, which appeared in
|
|
the GNU implementation and was adopted in
|
|
.Fx 9
|
|
for compatibility's sake.
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Gabor Kovesdan Aq gabor@FreeBSD.org .
|
|
.Sh BUGS
|
|
Transliteration is enabled in this implementation by default, so it
|
|
is impossible by design to turn it off.
|
|
Accordingly, trying to turn it off will always fail and \-1 will be
|
|
returned.
|
|
Getting the transliteration state will always succeed and indicate
|
|
that it is turned on, though.
|