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+<TITLE>curs_termcap 3x</TITLE>
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+<H1>curs_termcap 3x</H1>
+<HR>
<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
</PRE>
<H2>NAME</H2><PRE>
- <B>tgetent</B>, <B>tgetflag</B>, <B>tgetnum</B>, <B>tgetstr</B>, <B>tgoto</B>, <B>tputs</B> - direct
- <B>curses</B> interface to the terminfo capability database
+ <STRONG>tgetent</STRONG>, <STRONG>tgetflag</STRONG>, <STRONG>tgetnum</STRONG>, <STRONG>tgetstr</STRONG>, <STRONG>tgoto</STRONG>, <STRONG>tputs</STRONG> - direct
+ <STRONG>curses</STRONG> interface to the terminfo capability database
</PRE>
<H2>SYNOPSIS</H2><PRE>
- <B>#include</B> <B><curses.h></B>
- <B>#include</B> <B><term.h></B>
- <B>int</B> <B>tgetent(const</B> <B>char</B> <B>*bp,</B> <B>char</B> <B>*name);</B>
- <B>int</B> <B>tgetflag(const</B> <B>char</B> <B>*id);</B>
- <B>int</B> <B>tgetnum(const</B> <B>char</B> <B>*id);</B>
- <B>char</B> <B>*tgetstr(const</B> <B>char</B> <B>*id,</B> <B>char</B> <B>**area);</B>
- <B>char</B> <B>*tgoto(const</B> <B>char</B> <B>*cap,</B> <B>int</B> <B>col,</B> <B>int</B> <B>row);</B>
- <B>int</B> <B>tputs(const</B> <B>char</B> <B>*str,</B> <B>int</B> <B>affcnt,</B> <B>int</B> <B>(*putc)(int));</B>
+ <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+ <STRONG>#include</STRONG> <STRONG><term.h></STRONG>
+ <STRONG>extern</STRONG> <STRONG>char</STRONG> <STRONG>PC;</STRONG> <STRONG>extern</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>UP;</STRONG> <STRONG>extern</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>BC;</STRONG> <STRONG>extern</STRONG>
+ <STRONG>short</STRONG> <STRONG>ospeed;</STRONG>
+ <STRONG>int</STRONG> <STRONG>tgetent(char</STRONG> <STRONG>*bp,</STRONG> <STRONG>const</STRONG> <STRONG>char</STRONG> <STRONG>*name);</STRONG>
+ <STRONG>int</STRONG> <STRONG>tgetflag(char</STRONG> <STRONG>*id);</STRONG>
+ <STRONG>int</STRONG> <STRONG>tgetnum(char</STRONG> <STRONG>*id);</STRONG>
+ <STRONG>char</STRONG> <STRONG>*tgetstr(char</STRONG> <STRONG>*id,</STRONG> <STRONG>char</STRONG> <STRONG>**area);</STRONG>
+ <STRONG>char</STRONG> <STRONG>*tgoto(const</STRONG> <STRONG>char</STRONG> <STRONG>*cap,</STRONG> <STRONG>int</STRONG> <STRONG>col,</STRONG> <STRONG>int</STRONG> <STRONG>row);</STRONG>
+ <STRONG>int</STRONG> <STRONG>tputs(const</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>affcnt,</STRONG> <STRONG>int</STRONG> <STRONG>(*putc)(int));</STRONG>
</PRE>
<H2>DESCRIPTION</H2><PRE>
- These routines are included as a conversion aid for pro-
- grams that use the <I>termcap</I> library. Their parameters are
- the same and the routines are emulated using the <I>terminfo</I>
- database. Thus, they can only be used to query the capa-
- bilities of entries for which a terminfo entry has been
+ These routines are included as a conversion aid for pro-
+ grams that use the <EM>termcap</EM> library. Their parameters are
+ the same and the routines are emulated using the <EM>terminfo</EM>
+ database. Thus, they can only be used to query the capa-
+ bilities of entries for which a terminfo entry has been
compiled.
- The <B>tgetent</B> routine loads the entry for <I>name</I>. It returns
- 1 on success, 0 if there is no such entry, and -1 if the
- terminfo database could not be found. The emulation
- ignores the buffer pointer <I>bp</I>.
+ The <STRONG>tgetent</STRONG> routine loads the entry for <EM>name</EM>. It returns
+ 1 on success, 0 if there is no such entry, and -1 if the
+ terminfo database could not be found. The emulation
+ ignores the buffer pointer <EM>bp</EM>.
- The <B>tgetflag</B> routine gets the boolean entry for <I>id</I>, or
+ The <STRONG>tgetflag</STRONG> routine gets the boolean entry for <EM>id</EM>, or
zero if it is not available.
- The <B>tgetnum</B> routine gets the numeric entry for <I>id</I>, or -1
+ The <STRONG>tgetnum</STRONG> routine gets the numeric entry for <EM>id</EM>, or -1
if it is not available.
- The <B>tgetstr</B> routine returns the string entry for <I>id</I>, or
- zero if it is not available. Use <B>tputs</B> to output the
- returned string. The return value will also be copied to
- the buffer pointed to by <I>area</I>, and the <I>area</I> value will be
+ The <STRONG>tgetstr</STRONG> routine returns the string entry for <EM>id</EM>, or
+ zero if it is not available. Use <STRONG>tputs</STRONG> to output the
+ returned string. The return value will also be copied to
+ the buffer pointed to by <EM>area</EM>, and the <EM>area</EM> value will be
updated to point past the null ending this value.
- The <B>tgoto</B> routine instantiates the parameters into the
+ Only the first two characters of the <STRONG>id</STRONG> parameter of <STRONG>tget-</STRONG>
+ <STRONG>flag</STRONG>, <STRONG>tgetnum</STRONG> and <STRONG>tgetstr</STRONG> are compared in lookups.
+
+ The <STRONG>tgoto</STRONG> routine instantiates the parameters into the
given capability. The output from this routine is to be
- passed to <B>tputs</B>.
+ passed to <STRONG>tputs</STRONG>.
- The <B>tputs</B> routine is described on the <B><A HREF="curs_terminfo.3x.html">curs_terminfo(3x)</A></B>
+ The <STRONG>tputs</STRONG> routine is described on the <STRONG><A HREF="curs_terminfo.3x.html">curs_terminfo(3x)</A></STRONG>
manual page. It can retrieve capabilities by either term-
cap or terminfo name.
+ The variables <STRONG>PC</STRONG>, <STRONG>UP</STRONG> and <STRONG>BC</STRONG> are set by <STRONG>tgetent</STRONG> to the ter-
+ minfo entry's data for <STRONG>pad_char</STRONG>, <STRONG>cursor_up</STRONG> and
+ <STRONG>backspace_if_not_bs</STRONG>, respectively. <STRONG>UP</STRONG> is not used by
+ ncurses. <STRONG>PC</STRONG> is used in the <STRONG>tdelay_output</STRONG> function. <STRONG>BC</STRONG> is
+ used in the <STRONG>tgoto</STRONG> emulation. The variable <STRONG>ospeed</STRONG> is set
+ by ncurses in a system-specific coding to reflect the ter-
+ minal speed.
+
</PRE>
<H2>RETURN VALUE</H2><PRE>
Except where explicitly noted, routines that return an
- integer return <B>ERR</B> upon failure and <B>OK</B> (SVr4 only speci-
- fies "an integer value other than <B>ERR</B>") upon successful
+ integer return <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> (SVr4 only speci-
+ fies "an integer value other than <STRONG>ERR</STRONG>") upon successful
completion.
- Routines that return pointers return <B>NULL</B> on error.
+ Routines that return pointers return <STRONG>NULL</STRONG> on error.
</PRE>
<H2>BUGS</H2><PRE>
- If you call <B>tgetstr</B> to fetch <B>ca</B> or any other parameterized
+ If you call <STRONG>tgetstr</STRONG> to fetch <STRONG>ca</STRONG> or any other parameterized
string, be aware that it will be returned in terminfo
notation, not the older and not-quite-compatible termcap
notation. This won't cause problems if all you do with it
- is call <B>tgoto</B> or <B>tparm</B>, which both expand terminfo-style.
+ is call <STRONG>tgoto</STRONG> or <STRONG>tparm</STRONG>, which both expand terminfo-style
+ strings as terminfo. (The <STRONG>tgoto</STRONG> function, if configured
+ to support termcap, will check if the string is indeed
+ terminfo-style by looking for "%p" parameters or "$<..>"
+ delays, and invoke a termcap-style parser if the string
+ does not appear to be terminfo).
Because terminfo conventions for representing padding in
- string capabilities differ from termcap's, <B>tputs("50");</B>
+ string capabilities differ from termcap's, <STRONG>tputs("50");</STRONG>
will put out a literal "50" rather than busy-waiting for
50 milliseconds. Cope with it.
be removed in future versions.
Neither the XSI Curses standard nor the SVr4 man pages
- documented the return values of <B>tgetent</B> correctly, though
- all three were in fact returned ever since SVr1.
+ documented the return values of <STRONG>tgetent</STRONG> correctly, though
+ all three were in fact returned ever since SVr1. In par-
+ ticular, an omission in the XSI Curses documentation has
+ been misinterpreted to mean that <STRONG>tgetent</STRONG> returns <STRONG>OK</STRONG> or
+ <STRONG>ERR</STRONG>. Because the purpose of these functions is to provide
+ compatibility with the <EM>termcap</EM> library, that is a defect
+ in XCurses, Issue 4, Version 2 rather than in ncurses.
+
+ External variables are provided for support of certain
+ termcap applications. However, termcap applications' use
+ of those variables is poorly documented, e.g., not distin-
+ guishing between input and output. In particular, some
+ applications are reported to declare and/or modify <STRONG>ospeed</STRONG>.
</PRE>
<H2>SEE ALSO</H2><PRE>
- <B><A HREF="ncurses.3x.html">curses(3x)</A></B>, <B><A HREF="terminfo.5.html">terminfo(5)</A></B>, <B><A HREF="putc.3S.html">putc(3S)</A></B>.
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+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>, <STRONG><A HREF="putc.3S.html">putc(3S)</A></STRONG>.
</PRE>
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