path: root/lib/libncurses/curs_termin.3

.TH curs_terminfo 3 ""
.ds n 5
.SH NAME
\fBsetupterm\fR, \fBsetterm\fR,
\fBset_curterm\fR, \fBdel_curterm\fR, \fBrestartterm\fR, \fBtparm\fR,
\fBtputs\fR, \fBputp\fR, \fBvidputs\fR, \fBvidattr\fR, \fBmvcur\fR,
\fBtigetflag\fR, \fBtigetnum\fR, 
\fBtigetstr\fR - \fBncurses\fR interfaces to terminfo database
.SH SYNOPSIS
\fB#include <ncurses.h>\fR
.br
\fB#include <term.h>\fR

\fBint setupterm(char *term, int fildes, int *errret);\fR
.br
\fBint setterm(char *term);\fR
.br
\fBint set_curterm(TERMINAL *nterm);\fR
.br
\fBint del_curterm(TERMINAL *oterm);\fR
.br
\fBint restartterm(char *term, int fildes, int *errret);\fR
.br
\fBchar *tparm(char *str, long int p1, long int p2, 
      long int p3, long int p4, long int p5, long int p6, 
      long int p7, long int p8, long int p9);\fR
.br
\fBint tputs(char *str, int affcnt, int (*putc)(char));\fR
.br
\fBint putp(char *str);\fR
.br
\fBint vidputs(chtype attrs, int (*putc)(char));\fR
.br
\fBint vidattr(chtype attrs);\fR
.br
\fBint mvcur(int oldrow, int oldcol, int newrow, int newcol);\fR
.br
\fBint tigetflag(char *capname);\fR
.br
\fBint tigetnum(char *capname);\fR
.br
\fBint tigetstr(char *capname);\fR
.br
.SH DESCRIPTION
These low-level routines must be called by programs that have to deal
directly with the \fBterminfo\fR database to handle certain terminal
capabilities, such as programming function keys.  For all other
functionality, \fBncurses\fR routines are more suitable and their use is
recommended.

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(5)].  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
\fBlines\fR and \fBcolumns\fR specified in \fBterminfo\fR are used.
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.

The header files \fBncurses.h\fR and \fBnterm.h\fR should be included (in this
order) to get the definitions for these strings, numbers, and flags (these
correspond to the SVr4 headers \fBcurses.h\fR and \fBterm.h\fR).  Parameterized
strings should be passed through \fBtparm\fR to instantiate them.  All
\fBterminfo\fR strings [including the output of \fBtparm\fR] should be printed
with \fBtputs\fR or \fBputp\fR.  Call the \fBreset_shell_mode\fR to restore the
tty modes before exiting [see \fBcurs_kernel\fR(3)].  Programs which use
cursor addressing should output \fBenter_ca_mode\fR upon startup and should
output \fBexit_ca_mode\fR before exiting.  Programs desiring shell escapes
should call

\fBreset_shell_mode\fR and output \fBexit_ca_mode\fR before the shell
is called and should output \fBenter_ca_mode\fR and call
\fBreset_prog_mode\fR after returning from the shell.

The \fBsetupterm\fR routine reads in the \fBterminfo\fR database,
initializing the \fBterminfo\fR structures, but does not set up the
output virtualization structures used by \fBncurses\fR.  The terminal
type is the character string \fIterm\fR; if \fIterm\fR is null, the
environment variable \fBTERM\fR is used.  All output is to file
descriptor \fBfildes\fR which is initialized for output.  If
\fIerrret\fR is not null, then \fBsetupterm\fR returns \fBOK\fR or
\fBERR\fR and stores a status value in the integer pointed to by
\fIerrret\fR.  A status of \fB1\fR in \fIerrret\fR is normal, \fB0\fR
means that the terminal could not be found, and \fB-1\fR means that
the \fBterminfo\fR database could not be found.  If \fIerrret\fR is
null, \fBsetupterm\fR prints an error message upon finding an error
and exits.  Thus, the simplest call is:

      \fBsetupterm((char *)0, 1, (int *)0);\fR,

which uses all the defaults and sends the output to \fBstdout\fR.

The \fBsetterm\fR routine is being replaced by \fBsetupterm\fR.  The call:

      \fBsetupterm(\fR\fIterm\fR\fB, 1, (int *)0)\fR

provides the same functionality as \fBsetterm(\fR\fIterm\fR\fB)\fR.
The \fBsetterm\fR routine is included here for BSD compatibility, and
is not recommended for new programs.

The \fBset_curterm\fR routine sets the variable \fBcur_term\fR to
\fInterm\fR, and makes all of the \fBterminfo\fR boolean, numeric, and
string variables use the values from \fInterm\fR.

The \fBdel_curterm\fR routine frees the space pointed to by
\fIoterm\fR and makes it available for further use.  If \fIoterm\fR is
the same as \fBcur_term\fR, references to any of the \fBterminfo\fR
boolean, numeric, and string variables thereafter may refer to invalid
memory locations until another \fBsetupterm\fR has been called.

The \fBrestartterm\fR routine is similar to \fBsetupterm\fR and
\fBinitscr\fR, except that it is called after restoring memory to a
previous state.  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.

The \fBtparm\fR routine instantiates the string \fIstr\fR with
parameters \fIpi\fR.  A pointer is returned to the result of \fIstr\fR
with the parameters applied.

The \fBtputs\fR routine applies padding information to the string
\fIstr\fR and outputs it.  The \fIstr\fR must be a terminfo string
variable or the return value from \fBtparm\fR, \fBtgetstr\fR, or
\fBtgoto\fR.  \fIaffcnt\fR is the number of lines affected, or 1 if
not applicable.  \fIputc\fR is a \fBputchar\fR-like routine to which
the characters are passed, one at a time.

The \fBputp\fR routine calls \fBtputs(\fR\fIstr\fR\fB, 1, putchar)\fR.
Note that the output of \fBputp\fR always goes to \fBstdout\fR, not to
the \fIfildes\fR specified in \fBsetupterm\fR.

The \fBvidputs\fR routine displays the string on the terminal in the
video attribute mode \fIattrs\fR, which is any combination of the
attributes listed in \fBncurses\fR(3).  The characters are passed to
the \fBputchar\fR-like routine \fIputc\fR.

The \fBvidattr\fR routine is like the \fBvidputs\fR routine, except
that it outputs through \fBputchar\fR.

The \fBmvcur\fR routine provides low-level cursor motion.  It takes
effect immediately (rather than at the next refresh).

The \fBtigetflag\fR, \fBtigetnum\fR and \fBtigetstr\fR routines return
the value of the capability corresponding to the \fBterminfo\fR
\fIcapname\fR passed to them, such as \fBxenl\fR.

With the \fBtigetflag\fR routine, the value \fB-1\fR is returned if
\fIcapname\fR is not a boolean capability.

With the \fBtigetnum\fR routine, the value \fB-2\fR is returned if
\fIcapname\fR is not a numeric capability.

With the \fBtigetstr\fR routine, the value \fB(char *)-1\fR is
returned if \fIcapname\fR is not a string capability.

The \fIcapname\fR for each capability is given in the table column entitled
\fIcapname\fR code in the capabilities section of \fBterminfo\fR(5).

\fBchar *boolnames\fR, \fB*boolcodes\fR, \fB*boolfnames\fR

\fBchar *numnames\fR, \fB*numcodes\fR, \fB*numfnames\fR

\fBchar *strnames\fR, \fB*strcodes\fR, \fB*strfnames\fR

These null-terminated arrays contain the \fIcapnames\fR, the
\fBtermcap\fR codes, and the full C names, for each of the
\fBterminfo\fR variables.
.SH RETURN VALUE
All routines return the integer \fBERR\fR upon failure and an integer value
other than \fBERR\fR upon successful completion, unless otherwise noted in the
preceding routine descriptions.

Routines that return pointers always return \fBNULL\fR on error.
.SH NOTES
The \fBsetupterm\fR routine should be used in place of \fBsetterm\fR.

Note that \fBvidattr\fR and \fBvidputs\fR may be macros.
.SH SEE ALSO
\fBncurses\fR(3), \fBcurs_initscr\fR(3), \fBcurs_kernel\fR(3),
\fBputc\fR(3), \fBterminfo\fR(5)
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