freebsd/lib/libkiconv/kiconv.3

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.\" Copyright (c) 2003 Ryuichiro Imura
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.Dd July 17, 2003
.Dt KICONV 3
.Os
.Sh NAME
.Nm kiconv_add_xlat16_cspair ,
.Nm kiconv_add_xlat16_cspairs ,
.Nm kiconv_add_xlat16_table
.Nd kernel side iconv library
.Sh LIBRARY
.Lb libkiconv
.Sh SYNOPSIS
.In sys/iconv.h
.Ft int
.Fo kiconv_add_xlat16_cspair
.Fa "const char *tocode"
.Fa "const char *fromcode"
.Fa "int flag"
.Fc
.Ft int
.Fo kiconv_add_xlat16_cspairs
.Fa "const char *foreigncode"
.Fa "const char *localcode"
.Fc
.Ft int
.Fo kiconv_add_xlat16_table
.Fa "const char *tocode"
.Fa "const char *fromcode"
.Fa "const void *data"
.Fa "int datalen"
.Fc
.Sh DESCRIPTION
The
.Nm kiconv
library provides multi-byte character conversion tables for kernel side
iconv service.
.Pp
The
.Fn kiconv_add_xlat16_cspair
function
defines a conversion table using
.Xr iconv 3
between
.Fa fromcode
charset and
.Fa tocode
charset.
You can specify
.Fa flag
to determine if
.Xr tolower 3
/
.Xr toupper 3
conversion is included in the table.
The
.Fa flag
has following values.
.Pp
.Bl -tag -width ".Dv KICONV_FROM_LOWER" -compact
.It Dv KICONV_LOWER
.It Dv KICONV_FROM_LOWER
It generates a tolower table in addition to a character conversion table.
The difference between two is tolower
.Fa tocode
or tolower
.Fa fromcode .
.It Dv KICONV_UPPER
.It Dv KICONV_FROM_UPPER
It generates a toupper table in addition to a character conversion table.
The difference between two is toupper
.Fa tocode
or toupper
.Fa fromcode .
.El
.Pp
A tolower/toupper conversion is limited to single-byte characters.
.Pp
The
.Fn kiconv_add_xlat16_cspairs
function
defines two conversion tables which are from
.Fa localcode
to
.Fa foreigncode
and from
.Fa foreigncode
to
.Fa localcode .
These conversion tables also contain both tolower and toupper tables.
.Pp
The
.Fn kiconv_add_xlat16_table
function
defines a conversion table directly pointed by
.Fa data
whose length is
.Fa datalen ,
not using
.Xr iconv 3 .
.Sh SEE ALSO
.Xr iconv 3 ,
.Xr tolower 3 ,
.Xr toupper 3