1TERMCAP(3X)                                                        TERMCAP(3X)
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NAME

6       tgetent,  tgetnum,  tgetflag, tgetstr, tgoto, tputs - terminal indepen‐
7       dent operation routines
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SYNOPSIS

10       char PC;
11       char *BC;
12       char *UP;
13       short ospeed;
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15       tgetent(bp, name)
16       char *bp, *name;
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18       tgetnum(id)
19       char *id;
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21       tgetflag(id)
22       char *id;
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24       char *
25       tgetstr(id, area)
26       char *id, **area;
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28       char *
29       tgoto(cm, destcol, destline)
30       char *cm;
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32       tputs(cp, affcnt, outc)
33       register char *cp;
34       int affcnt;
35       int (*outc)();
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DESCRIPTION

38       These functions extract and use capabilities from the terminal capabil‐
39       ity data base termcap(5).  These are low level routines; see curses(3X)
40       for a higher level package.
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42       Tgetent extracts the entry for terminal name into the buffer at bp.  Bp
43       should  be a character buffer of size 1024 and must be retained through
44       all subsequent  calls  to  tgetnum,  tgetflag,  and  tgetstr.   Tgetent
45       returns  -1  if it cannot open the termcap file, 0 if the terminal name
46       given does not have an entry, and 1 if all goes well.  It will look  in
47       the  environment  for a TERMCAP variable.  If found, and the value does
48       not begin with a slash, and the terminal type name is the same  as  the
49       environment  string TERM, the TERMCAP string is used instead of reading
50       the termcap file.  If it does begin with a slash, the string is used as
51       a  path  name  rather  than /etc/termcap.  This can speed up entry into
52       programs that call tgetent, as well  as  to  help  debug  new  terminal
53       descriptions  or  to  make one for your terminal if you can't write the
54       file /etc/termcap.
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56       Tgetnum gets the numeric value of capability id, returning -1 if is not
57       given for the terminal.  Tgetflag returns 1 if the specified capability
58       is present in the terminal's entry, 0 if it is  not.   Tgetstr  returns
59       the string value of the capability id, places it in the buffer at area,
60       and advances the area pointer.  It decodes the abbreviations  for  this
61       field described in termcap(5), except for cursor addressing and padding
62       information.  Tgetstr returns NULL if the capability was not found.
63
64       Tgoto returns a cursor addressing string decoded from cm to go to  col‐
65       umn  destcol in line destline.  It uses the external variables UP (from
66       the up capability) and BC (if bc is given rather than bs) if  necessary
67       to  avoid placing \n, ^D or ^@ in the returned string.  (Programs which
68       call tgoto should be sure to turn off the XTABS bit(s), since tgoto may
69       now  output  a tab.  Note that programs using termcap should in general
70       turn off XTABS anyway since some terminals  use  control  I  for  other
71       functions,  such  as  nondestructive  space.)  If a % sequence is given
72       which is not understood, then tgoto returns “OOPS”.
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74       Tputs decodes the leading padding information of the string cp;  affcnt
75       gives  the  number  of lines affected by the operation, or 1 if this is
76       not applicable, outc is a routine which is called with  each  character
77       in  turn.  The external variable ospeed should contain the output speed
78       of the terminal as encoded by stty(3).  The external variable PC should
79       contain  a  pad character to be used (from the pc capability) if a null
80       (^@) is inappropriate.
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FILES

83       /usr/lib/libtermcap.a  -ltermcap library
84       /etc/termcap           data base
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SEE ALSO

87       ex(1), curses(3X), termcap(5)
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AUTHOR

90       William Joy
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944th Berkeley Distribution        May 15, 1985                      TERMCAP(3X)
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