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curs_terminfo(3X)					     curs_terminfo(3X)

NAME
       del_curterm, mvcur, putp, restartterm, set_curterm, setterm, setupterm,
       tigetflag, tigetnum, tigetstr, tparm, tputs, vid_attr, vid_puts,
       vidattr, vidputs - curses interfaces to terminfo database

SYNOPSIS
       #include <curses.h>
       #include <term.h>

       int setupterm(char *term, int fildes, int *errret);
       int setterm(char *term);
       TERMINAL *set_curterm(TERMINAL *nterm);
       int del_curterm(TERMINAL *oterm);
       int restartterm(const char *term, int fildes, int *errret);
       char *tparm(char *str, ...);
       int tputs(const char *str, int affcnt, int (*putc)(int));
       int putp(const char *str);
       int vidputs(chtype attrs, int (*putc)(int));
       int vidattr(chtype attrs);
       int vid_puts(attr_t attrs, short pair, void *opts, int (*putc)(char));
       int vid_attr(attr_t attrs, short pair, void *opts);
       int mvcur(int oldrow, int oldcol, int newrow, int newcol);
       int tigetflag(char *capname);
       int tigetnum(char *capname);
       char *tigetstr(char *capname);

DESCRIPTION
       These  low-level	 routines must be called by programs that have to deal
       directly with the terminfo database to handle certain terminal capabil‐
       ities, such as programming function keys.  For all other functionality,
       curses routines are more suitable and their use is recommended.

       Initially, setupterm should be called.  Note that setupterm is automat‐
       ically  called  by initscr and newterm.	This defines the set of termi‐
       nal-dependent variables [listed in terminfo(5)].	  The  terminfo	 vari‐
       ables  lines  and  columns  are initialized by setupterm as follows: If
       use_env(FALSE) has been called, values for lines and columns  specified
       in  terminfo  are  used.	 Otherwise, if the environment variables LINES
       and COLUMNS exist, their values are used.  If these  environment	 vari‐
       ables  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 lines and columns specified in the terminfo data‐
       base are used.

       The header files curses.h and term.h should be included (in this order)
       to  get the definitions for these strings, numbers, and flags.  Parame‐
       terized strings should be passed through	 tparm	to  instantiate	 them.
       All  terminfo strings [including the output of tparm] should be printed
       with tputs or putp.  Call the reset_shell_mode to restore the tty modes
       before  exiting	[see  curs_kernel(3X)].	 Programs which use cursor ad‐
       dressing should output enter_ca_mode upon startup and should output ex‐
       it_ca_mode before exiting.  Programs desiring shell escapes should call

       reset_shell_mode and output exit_ca_mode before the shell is called and
       should output enter_ca_mode and call  reset_prog_mode  after  returning
       from the shell.

       The  setupterm routine reads in the terminfo database, initializing the
       terminfo structures, but does not  set  up  the	output	virtualization
       structures  used	 by curses.  The terminal type is the character string
       term; if term is null, the environment variable TERM is used.  All out‐
       put  is	to file descriptor fildes which is initialized for output.  If
       errret is not null, then setupterm returns OK or ERR and stores a  sta‐
       tus  value  in  the integer pointed to by errret.  A return value of OK
       combined with status of 1 in errret is normal.  If ERR is returned, ex‐
       amine errret:

	      1	   means  that	the  terminal  is hardcopy, cannot be used for
		   curses applications.

	      0	   means that the terminal could not be found, or that it is a
		   generic  type, having too little information for curses ap‐
		   plications to run.

	      -1   means that the terminfo database could not be found.

       If errret is null, setupterm prints an error message  upon  finding  an
       error and exits.	 Thus, the simplest call is:

	     setupterm((char *)0, 1, (int *)0);,

       which uses all the defaults and sends the output to stdout.

       The setterm routine is being replaced by setupterm.  The call:

	     setupterm(term, 1, (int *)0)

       provides	 the same functionality as setterm(term).  The setterm routine
       is included here for BSD compatibility, and is not recommended for  new
       programs.

       The  set_curterm routine sets the variable cur_term to nterm, and makes
       all of the terminfo boolean, numeric, and string variables use the val‐
       ues from nterm.	It returns the old value of cur_term.

       The  del_curterm	 routine frees the space pointed to by oterm and makes
       it available for further use.  If oterm is the same as cur_term, refer‐
       ences  to  any  of  the terminfo boolean, numeric, and string variables
       thereafter may refer to invalid	memory	locations  until  another  se‐
       tupterm has been called.

       The  restartterm	 routine  is  similar to setupterm and initscr, except
       that it is called after restoring memory to a previous state (for exam‐
       ple,  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.

       The  tparm  routine  instantiates the string str with parameters pi.  A
       pointer is returned to the result of str with the parameters applied.

       The tputs routine applies padding information to	 the  string  str  and
       outputs	it.   The str must be a terminfo string variable or the return
       value from tparm, tgetstr, or tgoto.  affcnt is the number of lines af‐
       fected,	or  1  if  not	applicable.  putc is a putchar-like routine to
       which the characters are passed, one at a time.

       The putp routine calls tputs(str, 1, putchar).  Note that the output of
       putp always goes to stdout, not to the fildes specified in setupterm.

       The  vidputs  routine  displays the string on the terminal in the video
       attribute mode attrs, which is any combination of the attributes listed
       in  curses(3X).	 The characters are passed to the putchar-like routine
       putc.

       The vidattr routine is like the vidputs routine, except that it outputs
       through putchar.

       The  vid_attr  and vid_puts routines correspond to vidattr and vidputs,
       respectively.  They use a set of arguments for representing  the	 video
       attributes  plus color, i.e., one of type attr_t for the attributes and
       one of short for the color_pair number.	The vid_attr and vid_puts rou‐
       tines  are designed to use the attribute constants with the WA_ prefix.
       The opts argument is reserved for future use.  Currently,  applications
       must provide a null pointer for that argument.

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

       The tigetflag, tigetnum and tigetstr routines return the value  of  the
       capability  corresponding  to the terminfo capname passed to them, such
       as xenl.

       The tigetflag routine returns the value -1 if capname is not a  boolean
       capability, or 0 if it is canceled or absent from the terminal descrip‐
       tion.

       The tigetnum routine returns the value -2 if capname is not  a  numeric
       capability,  or	-1  if	it is canceled or absent from the terminal de‐
       scription.

       The tigetstr routine returns the value (char *)-1 if capname is	not  a
       string  capability,  or 0 if it is canceled or absent from the terminal
       description.

       The capname for each capability is given in the table  column  entitled
       capname code in the capabilities section of terminfo(5).

	      char *boolnames[], *boolcodes[], *boolfnames[]

	      char *numnames[], *numcodes[], *numfnames[]

	      char *strnames[], *strcodes[], *strfnames[]

       These  null-terminated  arrays contain the capnames, the termcap codes,
       and the full C names, for each of the terminfo variables.

RETURN VALUE
       Routines that return an integer return ERR upon failure	and  OK	 (SVr4
       only  specifies "an integer value other than ERR") upon successful com‐
       pletion, unless otherwise noted in the preceding routine descriptions.

       Routines that return pointers always return NULL on error.

       X/Open defines no error conditions.  In this implementation

	      del_curterm
		   returns an error if its terminal parameter is null.

	      restartterm
		   returns an error if the associated call  to	setupterm  re‐
		   turns an error.

	      setupterm
		   returns  an	error  if it cannot allocate enough memory, or
		   create the initial windows (stdscr, curscr, newscr).	 Other
		   error conditions are documented above.

NOTES
       The  setupterm  routine	should be used in place of setterm.  It may be
       useful when you want to test for terminal capabilities without  commit‐
       ting to the allocation of storage involved in initscr.

       Note that vidattr and vidputs may be macros.

PORTABILITY
       The  function  setterm  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.

       In  System  V Release 4, set_curterm has an int return type and returns
       OK or ERR.  We have chosen to implement the XSI Curses semantics.

       In System V Release 4, the third argument of tputs  has	the  type  int
       (*putc)(char).

       The XSI Curses standard prototypes tparm with a fixed number of parame‐
       ters, rather than a variable argument list.  This implementation uses a
       variable argument list.	Portable applications should provide 9 parame‐
       ters after the format; zeroes are fine for this purpose.

       XSI notes that after calling mvcur, 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  Sys‐
       tem  V Release 4 curses implement mvcur using the SCREEN data allocated
       in either initscr or newterm.  So though it is documented as a terminfo
       function,  mvcur	 is  really a curses function which is not well speci‐
       fied.

       XSI states that the old location must be	 given.	  This	implementation
       allows the caller to use -1's for the old ordinates.  In that case, the
       old location is unknown.

       Extended terminal capability names, e.g., as defined by tic -x, are not
       stored in the arrays described in this section.

SEE ALSO
       curses(3X),    curs_initscr(3X),	  curs_kernel(3X),   curs_termcap(3X),
       putc(3S), terminfo(5)

							     curs_terminfo(3X)
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