249 lines
6.0 KiB
Groff
249 lines
6.0 KiB
Groff
.\" $NetBSD: terminfo.3,v 1.10 2013/01/25 17:28:50 roy Exp $
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.\"
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.\" Copyright (c) 2009, 2011 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 January 25, 2013
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.Dt TERMINFO 3
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.Os
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.Sh NAME
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.Nm setupterm ,
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.Nm set_curterm ,
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.Nm del_curterm ,
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.Nm termname ,
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.Nm longname ,
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.Nm tigetflag ,
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.Nm tigetnum ,
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.Nm tigetstr ,
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.Nm tparm ,
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.Nm tputs ,
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.Nm putp
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.Nd terminal independent operation routines
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.Sh LIBRARY
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.Lb libterminfo
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.Sh SYNOPSIS
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.In term.h
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.Vt char PC ;
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.Vt short ospeed ;
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.Vt TERMINAL *cur_term ;
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.Ft int
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.Fn setupterm "const char *name" "int fildes" "int *errret"
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.Ft TERMINAL *
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.Fn set_curterm "TERMINAL *nterm"
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.Ft int
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.Fn del_curterm "TERMINAL *oterm"
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.Ft char *
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.Fn termname "void"
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.Ft char *
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.Fn longname "void"
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.Ft int
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.Fn tigetnum "const char *id"
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.Ft int
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.Fn tigetflag "const char *id"
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.Ft char *
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.Fn tigetstr "const char *id"
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.Ft char *
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.Fn tparm "const char *cm" "long p1" "long p2" "long p3" "long p4" "long p5" "long p6" "long p7" "long p8" "long p9"
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.Ft int
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.Fn tputs "const char *cp" "int affcnt" "int (*outc)(int)"
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.Ft int
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.Fn putp "const char *cp"
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.Ft int
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.Fn ti_setupterm "TERMINAL **" "const char *name" "int fildes" "int *error"
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.Ft int
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.Fn ti_getflag "const TERMINAL *" "const char *id"
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.Ft int
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.Fn ti_getnum "const TERMINAL *" "const char *id"
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.Ft const char *
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.Fn ti_getstr "const TERMINAL *" "const char *id"
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.Ft char *
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.Fn tiparm "const char *cm" "..."
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.Ft char *
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.Fn ti_tiparm "TERMINAL *" "const char *cm" "..."
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.Ft int
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.Fn ti_puts "const TERMINAL *term" "const char *str" "int affcnt" "int (*outc)(int, void *)"
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.Ft int
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.Fn ti_putp "const TERMINAL *term" "const char *str"
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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, usually
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.Pa /usr/share/misc/terminfo ,
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the format of which is described in
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.Xr terminfo 5 .
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These are low level routines;
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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 setupterm
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function extracts the entry for terminal
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.Fa name
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and then calls
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.Fn set_curterm
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to set
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.Va cur_term
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to it.
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If
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.Fa name
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is
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.Dv NULL
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then it is replaced by the environment variable
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.Ev TERM .
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The
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.Fn setupterm
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function returns 0 on success and \-1 on error.
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.Va errret
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is set to \-1 if the
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.Nm terminfo
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database could not be opened,
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0 if the terminal could not be found in the database, and
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1 if all went well.
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.Pp
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The
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.Fn set_curterm
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function sets the variable
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.Va cur_term
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to
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.Va nterm
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and makes all of the
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.Nm terminfo
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boolean, numeric and string variables use the values from
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.Va nterm .
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The global variables
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.Va PC
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and
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.Va ospeed
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are then set.
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The old value of
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.Va cur_term
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is returned.
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The
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.Fn del_curterm
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function frees space pointed to by
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.Va oterm .
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.Pp
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The
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.Fn termname
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function returns the name of
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.Va cur_term .
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The
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.Fn longname
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function returns the description of
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.Va cur_term .
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.Pp
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The
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.Fn tigetflag
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function gets the boolean value of capability
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.Va id ,
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returning \-1 if it is not a valid capability.
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The
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.Fn tigetnum
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function gets the numeric value of the capability
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.Va id ,
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returning \-2 if it is not a valid capability.
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The
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.Fn tigetstr
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function returns the string value of the capability
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.Va id ,
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returning (char *)-1 if it is not a valid capability.
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.Pp
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The
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.Fn tparm
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function returns a string decoded from
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.Va cm
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with the parameters
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.Va p1
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\&...
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.Va p9
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applied.
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Some capabilities require string parameters and only platforms that can fit
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a
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.Vt char *
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pointer inside a
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.Vt long
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can use them.
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For platforms which don't support this,
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.Dv NULL
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is returned and
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.Va errno
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is set to
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.Er ENOTSUPP .
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The string encoding and parameter application is described in
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.Xr terminfo 5 .
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.Pp
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The
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.Fn tputs
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function applies padding information to the string
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.Va cp ;
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.Va affcnt
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gives the number of lines affected by the operation,
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or 1 if this is not applicable;
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.Va outc
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is a function which is called by each character in turn.
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The external variable
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.Va ospeed
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controls how many padding characters are sent in relation to the terminal
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speed.
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The
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.Fn putp
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function calls tputs(str, 1, putchar).
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The output from
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.Fn putp
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always goes to stdout.
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.Ss NetBSD Extensions To Terminfo
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The
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.Fn tiparm
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function allows variadic parameters instead of 9 fixed longs.
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Numeric parameters must be passed as
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.Vt int .
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String parameters must be passed as
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.Vt char *
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and works on all platforms, unlike
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.Fn tparm .
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.Pp
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The
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.Fn ti_*
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functions correspond to the standard
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.Fn t*
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functions but take an additional
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.Ft TERMINAL *
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parameter so that the terminal can be specified instead of assuming
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.Va cur_term .
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These functions use private variables to the
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.Ft TERMINAL
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instead of the global variables, such as
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.Va PC
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and
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.Va ospeed .
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.Sh SEE ALSO
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.Xr ex 1 ,
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.Xr curses 3 ,
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.Xr terminfo 5
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.Sh AUTHORS
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.An Roy Marples Aq roy@NetBSD.org
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