.\"***************************************************************************
-.\" Copyright (c) 1999-2005,2006 Free Software Foundation, Inc. *
+.\" Copyright (c) 1999-2007,2008 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" copy of this software and associated documentation files (the *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: curs_terminfo.3x,v 1.25 2006/12/24 16:05:49 tom Exp $
+.\" $Id: curs_terminfo.3x,v 1.30 2008/08/16 20:53:27 tom Exp $
.TH curs_terminfo 3X ""
.ds n 5
.na
.br
\fBint del_curterm(TERMINAL *\fR\fIoterm\fR\fB);\fR
.br
-\fBint restartterm(const char *\fR\fIterm\fR\fB, int \fR\fIfildes\fR\fB, int *\fR\fIerrret\fR\fB);\fR
+\fBint restartterm(char *\fR\fIterm\fR\fB, int \fR\fIfildes\fR\fB, int *\fR\fIerrret\fR\fB);\fR
.br
\fBchar *tparm(char *\fR\fIstr\fR\fB, ...);\fR
.br
Initially, \fBsetupterm\fR should be called. Note that
\fBsetupterm\fR is automatically called by \fBinitscr\fR and
\fBnewterm\fR. This defines the set of terminal-dependent variables
-[listed in \fBterminfo\fR(\*n)]. The \fBterminfo\fR variables
+[listed in \fBterminfo\fR(\*n)].
+The \fBterminfo\fR variables
\fBlines\fR and \fBcolumns\fR are initialized by \fBsetupterm\fR as
-follows: If \fBuse_env(FALSE)\fR has been called, values for
+follows:
+.RS
+.PP
+If \fBuse_env(FALSE)\fR has been called, values for
\fBlines\fR and \fBcolumns\fR specified in \fBterminfo\fR are used.
+.PP
Otherwise, if the environment variables \fBLINES\fR and \fBCOLUMNS\fR
exist, their values are used. If these environment variables do not
exist and the program is running in a window, the current window size
is used. Otherwise, if the environment variables do not exist, the
values for \fBlines\fR and \fBcolumns\fR specified in the
\fBterminfo\fR database are used.
+.RE
.PP
The header files \fBcurses.h\fR and \fBterm.h\fR should be included (in this
order) to get the definitions for these strings, numbers, and flags.
example, when reloading a game saved as a core image dump). It assumes that
the windows and the input and output options are the same as when memory was
saved, but the terminal type and baud rate may be different. Accordingly,
-it saves various tty state bits, does a setupterm, and then restores the bits.
+it saves various tty state bits, calls \fBsetupterm\fP,
+and then restores the bits.
.PP
The \fBtparm\fR routine instantiates the string \fIstr\fR with
parameters \fIpi\fR. A pointer is returned to the result of \fIstr\fR
returns an error
if its terminal parameter is null.
.TP 5
+\fBputp\fP
+calls \fBtputs\fP, returning the same error-codes.
+.TP 5
\fBrestartterm\fP
returns an error
if the associated call to \fBsetupterm\fP returns an error.
if it cannot allocate enough memory, or
create the initial windows (stdscr, curscr, newscr).
Other error conditions are documented above.
+.TP 5
+\fBtputs\fP
+returns an error if the string parameter is null.
+It does not detect I/O errors:
+X/Open states that \fBtputs\fP ignores the return value
+of the output function \fIputc\fP.
.RE
.SH NOTES
The \fBsetupterm\fR routine should be used in place of \fBsetterm\fR.
.PP
Note that \fBvidattr\fR and \fBvidputs\fR may be macros.
.SH PORTABILITY
-The function \fBsetterm\fR is not described in the XSI Curses standard and must
-be considered non-portable. All other functions are as described in the XSI
-curses standard.
+The function \fBsetterm\fR is not described by X/Open and must
+be considered non-portable. All other functions are as described by X/Open.
+.PP
+\fBsetupterm\fP copies the terminal name to the array \fBttytype\fP.
+This is not part of X/Open Curses, but is assumed by some applications.
.PP
In System V Release 4, \fBset_curterm\fR has an \fBint\fR return type and
-returns \fBOK\fR or \fBERR\fR. We have chosen to implement the XSI Curses
+returns \fBOK\fR or \fBERR\fR. We have chosen to implement the X/Open Curses
semantics.
.PP
In System V Release 4, the third argument of \fBtputs\fR has the type
\fBint (*putc)(char)\fR.
.PP
-The XSI Curses standard prototypes \fBtparm\fR with a fixed number of parameters,
+At least one implementation of X/Open Curses (Solaris) returns a value
+other than OK/ERR from \fBtputs\fP.
+That returns the length of the string, and does no error-checking.
+.PP
+X/Open Curses prototypes \fBtparm\fR with a fixed number of parameters,
rather than a variable argument list.
This implementation uses a variable argument list.
Portable applications should provide 9 parameters after the format;
zeroes are fine for this purpose.
.PP
-XSI notes that after calling \fBmvcur\fR, the curses state may not match the
+X/Open notes that after calling \fBmvcur\fR, the curses state may not match the
actual terminal state, and that an application should touch and refresh
the window before resuming normal curses calls.
Both ncurses and System V Release 4 curses implement \fBmvcur\fR using
So though it is documented as a terminfo function,
\fBmvcur\fR is really a curses function which is not well specified.
.PP
-XSI states that the old location must be given.
+X/Open states that the old location must be given for \fBmvcur\fP.
This implementation allows the caller to use -1's for the old ordinates.
In that case, the old location is unknown.
.PP
Extended terminal capability names, e.g., as defined by \fBtic\ -x\fP,
are not stored in the arrays described in this section.
.SH SEE ALSO
-\fBcurses\fR(3X), \fBcurs_initscr\fR(3X), \fBcurs_kernel\fR(3X), \fBcurs_termcap\fR(3X),
-\fBputc\fR(3), \fBterminfo\fR(\*n)
+\fBcurses\fR(3X),
+\fBcurs_initscr\fR(3X),
+\fBcurs_kernel\fR(3X),
+\fBcurs_termcap\fR(3X),
+\fBputc\fR(3),
+\fBterminfo\fR(\*n)
.\"#
.\"# The following sets edit modes for GNU EMACS
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