84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
156 lines
3.8 KiB
Groff
156 lines
3.8 KiB
Groff
.\" $NetBSD: termcap.3,v 1.7 2013/07/20 21:39:56 wiz Exp $
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.\"
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.\" Copyright (c) 2009 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Roy Marples.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd March 14, 2011
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.Dt TERMCAP 3
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.Os
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.Sh NAME
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.Nm tgetent ,
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.Nm tgetnum ,
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.Nm tgetflag ,
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.Nm tgetstr ,
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.Nm tgoto ,
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.Nm tputs
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.Nd terminal independent operation routines
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.Sh LIBRARY
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.Lb libtermcap
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.Sh SYNOPSIS
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.In termcap.h
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.Vt char PC ;
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.Vt char *BC ;
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.Vt char *UP ;
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.Ft int
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.Fn tgetent "char *bp" "const char *name"
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.Ft int
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.Fn tgetnum "const char *id"
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.Ft int
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.Fn tgetflag "const char *id"
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.Ft char *
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.Fn tgetstr "const char *id" "char **area"
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.Ft char *
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.Fn tgoto "const char *cm" "int destcol" "int destline"
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.Sh DESCRIPTION
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These functions extract and use capabilities from a terminal capability
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database.
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They exist as wrappers around equivalent
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.Xr terminfo 3
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functions, which new code should use.
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These are low level routines; see
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.Xr curses 3
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for a higher level package.
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.Pp
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The
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.Fn tgetent
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function calls
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.Fn setupterm
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and configures
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.Va PC ,
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.Va UP
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and
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.Va BC .
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Only
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.Va PC
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is actually used internally.
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The
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.Fn tgetent
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function returns \-1 if none of the
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.Nm terminfo
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data base files could be opened,
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0 if the terminal name given does not match an entry,
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and 1 if all goes well.
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The
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.Fa bp
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argument is not used.
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.Pp
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The
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.Fn tgetnum
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function gets the numeric value of the capability
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.Fa id ,
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returning \-1 if it is not given for the terminal.
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The
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.Fn tgetflag
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function returns 1 if the specified capability is present in the terminal's
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entry, 0 if it is not.
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The
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.Fn tgetstr
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function returns the string value of the capability
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.Fa id .
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This is a
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.Xr terminfo 5
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string and not a
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.Nm termcap
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string;
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as such it should only be processed by
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.Fn tgoto .
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The
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.Fn tgetstr
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function returns
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.Dv NULL
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if the capability was not found.
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The
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.Fa area
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argument is unused.
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.Pp
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The
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.Fn tgoto
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function returns a cursor addressing string decoded from
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.Fa cm
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to go to column
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.Fa destcol
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in line
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.Fa destline ,
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or
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.Dv NULL
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on error conditions such as out of memory.
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Please note that
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.Fn tgoto
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can return an incomplete value on a malformed input sequence.
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Historically
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.Fn tgoto
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used to return
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.Dq OOPS
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on those conditions, so newer programs should now be checking the return
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value.
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.Sh SEE ALSO
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.Xr terminfo 3 ,
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.Xr terminfo 5
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.Sh HISTORY
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.Nm termcap
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first appeared in 4.0BSD.
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.Nx 1.5
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introduced some
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.Nm termcap
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.Fn t_*
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extensions which were removed in
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.Nx 6.0
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when
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.Xr terminfo 3
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was introduced.
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.Sh AUTHORS
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.An Roy Marples Aq Mt roy@NetBSD.org
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