termcap(3x) termcap(3x)
Name
tgetent, tgetnum, tgetflag, tgetstr, tgoto, tputs - terminal independent operation routines
Syntax
char PC;
char *BC;
char *UP;
short ospeed;
tgetent(bp, name)
char *bp, *name;
tgetnum(id)
char *id;
tgetflag(id)
char *id;
char *
tgetstr(id, area)
char *id, **area;
char *
tgoto(cm, destcol, destline)
char *cm;
tputs(cp, affcnt, outc)
register char *cp;
int affcnt;
int (*outc)();
Description
These functions extract and use capabilities from the terminal capability data base These are low level routines; see for a higher level
package.
The function extracts the entry for terminal name into the buffer at bp. The bp should be a character buffer of size 1024 and must be
retained through all subsequent calls to and The function returns -1 if it cannot open the file, 0 if the terminal name given does not have
an entry, and 1 if all goes well. It will look in the environment for a TERMCAP variable. If found, and the value does not begin with a
slash, and the terminal type name is the same as the environment string TERM, the TERMCAP string is used instead of reading the termcap
file. If it does begin with a slash, the string is used as a pathname rather than This can speed up entry into programs that call as well
as to help debug new terminal descriptions or to make one for your terminal if you cannot write the file
The function gets the numeric value of capability id, returning -1 if is not given for the terminal. The returns 1 if the specified capa-
bility is present in the terminal's entry, 0 if it is not. The function gets the string value of capability id, placing it in the buffer
at area, advancing the area pointer. It decodes the abbreviations for this field described in except for cursor addressing and padding
information.
The function returns a cursor addressing string decoded from cm to go to column destcol in line destline. It uses the external variables
UP (from the up capability) and BC (if bc is given rather than bs) if necessary to avoid placing
, ^D or ^@ in the returned string. Pro-
grams that call should be sure to turn off the XTABS bit(s), because may now output a tab. Note that programs using termcap should in gen-
eral turn off XTABS anyway, because some terminals use control I for other functions, such as nondestructive space. If a % sequence is
given that is not understood, then returns "OOPS".
The function decodes the leading padding information of the string cp; affcnt gives the number of lines affected by the operation, or 1 if
this is not applicable, outc is a routine that is called with each character in turn. The external variable ospeed should contain the out-
put speed of the terminal as encoded by The external variable PC should contain a pad character to be used (from the pc capability) if a
null (^@) is inappropriate.
Files
/usr/lib/libtermcap.a -ltermcap library
/etc/termcap data base
See Also
ex(1), curses(3x), termcap(5)
termcap(3x)
