curs_terminfo(3ocurses)

Synopsis

cc [flag . . .] file -locurses [library . . .]

#include <ocurses.h>
#include <oterm.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(char term, int fildes, int errret);
char 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);
int tputs(char str, int affcnt, int (putc)(int));
int putp(char str);
int vidputs(chtype attrs, int (putc)(int));
int vidattr(chtype attrs);
int mvcur(int oldrow, int oldcol, int newrow, int newcol);
int tigetflag(char capname);
int tigetnum(char capname);
int tigetstr(char capname);

Description

Initially, setupterm should be called. Note that setupterm is automatically called by initscr and newterm. This defines the set of terminal-dependent variables [listed in terminfo(4)]. The terminfo variables 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 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 lines and columns specified in the terminfo database are used.

The header files ocurses.h and oterm.h should be included (in this order) to get the definitions for these strings, numbers, and flags. Parameterized 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(3ocurses)]. Programs which use cursor addressing should output enter_ca_mode upon startup and should output exit_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 output is to file descriptor fildes which is initialized for output. If errret is not null, then setupterm returns OK or ERR and stores a status value in the integer pointed to by errret. A status of 1 in errret is normal, 0 means that the terminal could not be found, and -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 compatibility and is supported at Level 2.

The set_curterm routine sets the variable cur_term to nterm, and makes all of the terminfo boolean, numeric, and string variables use the values from nterm.

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, references to any of the terminfo boolean, numeric, and string variables thereafter may refer to invalid memory locations until another setupterm has been called.

The restartterm routine is similar to setupterm and initscr, 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 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 affected, 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(3ocurses). 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 mvcur routine provides low-level cursor motion.

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

With the tigetflag routine, the value -1 is returned if capname is not a boolean capability.

With the tigetnum routine, the value -2 is returned if capname is not a numeric capability.

With the tigetstr routine, the value (char )-1 is returned if capname is not a string capability.

The capname for each capability is given in the table column entitled capname code in the capabilities section of terminfo(4).

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 values

Routines that return pointers always return NULL on error.

References

Notices

The setupterm routine should be used in place of setterm.

Note that vidattr and vidputs may be macros.