74 lines
1.7 KiB
Groff
74 lines
1.7 KiB
Groff
.\" $NetBSD: catgets.3,v 1.16 2003/07/26 19:24:49 salo Exp $
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.\"
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.\" Written by J.T. Conklin <jtc@NetBSD.org>.
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.\" Public domain.
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.\"
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.Dd February 12, 2003
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.Dt CATGETS 3
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.Os
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.Sh NAME
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.Nm catgets
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.Nd retrieve string from message catalog
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In nl_types.h
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.Ft char *
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.Fn catgets "nl_catd catd" "int set_id" "int msg_id" "const char *s"
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.Sh DESCRIPTION
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The
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.Fn catgets
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function attempts to retrieve message
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.Fa msg_id
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of set
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.Fa set_id
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from the message catalog referenced by the descriptor
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.Fa catd .
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The argument
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.Fa s
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points to a default message which is returned if the function
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is unable to retrieve the specified message.
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.Sh RETURN VALUES
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If the specified message was retrieved successfully,
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.Fn catgets
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returns a pointer to an internal buffer containing the message string;
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otherwise it returns
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.Fa s .
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.Sh ERRORS
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The
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.Fn catgets
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function will fail if:
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.Bl -tag -width Er
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.It Bq Er EBADF
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The
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.Fa catd
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argument is not a valid message catalog descriptor open for reading.
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.It Bq Er EINTR
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The operation was interrupted by a signal.
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.It Bq Er ENOMSG
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The message identified by
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.Fa set_id
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and
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.Fa msg_id
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is not in the message catalog.
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.El
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.Sh SEE ALSO
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.Xr gencat 1 ,
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.Xr catclose 3 ,
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.Xr catopen 3 ,
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.Xr nls 7
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.Sh STANDARDS
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The
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.Fn catgets
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function conforms to
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.St -xpg4.2 .
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.Pp
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Major Unix vendors are split over the adoption of the two most
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important message catalog specifications: catgets or
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.Xr gettext 3 .
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The primary concern with the catgets interface is that every
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translatable string has to define a number (or a symbolic constant)
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which must correspond to the message in the catalog.
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Duplicate message IDs are not allowed.
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Constructing message catalogs is difficult.
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