freebsd-skq/lib/libc/iconv/__iconv_get_list.3
Gabor Kovesdan ad30f8e79b Add the BSD-licensed Citrus iconv to the base system with default off
setting. It can be built by setting the WITH_ICONV knob. While this
knob is unset, the library part, the binaries, the header file and
the metadata files will not be built or installed so it makes no impact
on the system if left turned off.

This work is based on the iconv implementation in NetBSD but a great
number of improvements and feature additions have been included:

- Some utilities have been added. There is a conversion table generator,
  which can compare conversion tables to reference data generated by
  GNU libiconv. This helps ensuring conversion compatibility.
- UTF-16 surrogate support and some endianness issues have been fixed.
- The rather chaotic Makefiles to build metadata have been refactored
  and cleaned up, now it is easy to read and it is also easier to add
  support for new encodings.
- A bunch of new encodings and encoding aliases have been added.
- Support for 1->2, 1->3 and 1->4 mappings, which is needed for
  transliterating with flying accents as GNU does, like "u.
- Lots of warnings have been fixed, the major part of the code is
  now WARNS=6 clean.
- New section 1 and section 5 manual pages have been added.
- Some GNU-specific calls have been implemented:
  iconvlist(), iconvctl(), iconv_canonicalize(), iconv_open_into()
- Support for GNU's //IGNORE suffix has been added.
- The "-" argument for stdin is now recognized in iconv(1) as per POSIX.
- The Big5 conversion module has been fixed.
- The iconv.h header files is supposed to be compatible with the
  GNU version, i.e. sources should build with base iconv.h and
  GNU libiconv. It also includes a macro magic to deal with the
  char ** and const char ** incompatibility.
- GNU compatibility: "" or "char" means the current local
  encoding in use
- Various cleanups and style(9) fixes.

Approved by:	delphij (mentor)
Obtained from:	The NetBSD Project
Sponsored by:	Google Summer of Code 2009
2011-02-25 00:04:39 +00:00

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.\" Copyright (c) 2009 Gabor Kovesdan <gabor@FreeBSD.org>
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.\" Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
.\" Electrical and Electronics Engineers, Inc and The Open Group. In the
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.\" $FreeBSD$
.\"
.Dd October 20, 2009
.Dt __ICONV_GET_LIST 3
.Os
.Sh NAME
.Nm __iconv_get_list
.Nm __iconv_free_list
.Nd retrieving a list of character encodings supported by
.Xr iconv 3
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In iconv.h
.Ft int
.Fn __iconv_get_list "char ***names" "size_t count" "bool paired"
.Ft void
.Fn __iconv_free_list "char **names" "size_t count"
.Sh DESCRIPTION
The
.Fn __iconv_get_list
function obtains a list of character encodings that are supported by the
.Xr iconv 3
call.
The list of the encoding names will be stored in
.Fa names
and the number of the entries is stored in
.Fa count .
If the
.Fa paired
variable is true, the list will be arranged into
canonical/alias name pairs.
.Pp
The
.Fn __iconv_free_list
function is to free the allocated memory during the call of
.Fn __iconv_get_list .
.Sh RETURN VALUES
Upon successful completion
.Fn __iconv_get_list
returns 0 and set the
.Fa names
and
.Fa count
arguments.
Otherwise, \-1 is returned and errno is set to indicate the error.
.Sh SEE ALSO
.Xr iconv 3 ,
.Xr iconvlist 3
.Sh STANDARDS
The
.Nm __iconv_get_list
and
.Nm __iconv_free_list
functions are non-standard interfaces, which appeared in
the implementation of the Citrus Project.
The iconv implementation of the Citrus Project was adopted in
.Fx 9 .
.Sh AUTHORS
This manual page was written by
.An Gabor Kovesdan Aq gabor@FreeBSD.org .