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<html><head><title>Term::Cap (Perl in a Nutshell, 2nd Edition)</title><link rel="stylesheet" type="text/css" href="../style/style1.css" /><meta name="DC.Creator" content="Stephen Spainhour" /><meta name="DC.Format" content="text/xml" scheme="MIME" /><meta name="DC.Language" content="en-US" /><meta name="DC.Publisher" content="O'Reilly & Associates, Inc." /><meta name="DC.Source" scheme="ISBN" content="0596002416L" /><meta name="DC.Subject.Keyword" content="stuff" /><meta name="DC.Title" content="Perl in a Nutshell, 2nd Edition" /><meta name="DC.Type" content="Text.Monograph" /></head><body bgcolor="#ffffff"><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home" /><map name="banner-map"><area shape="rect" coords="1,-2,616,66" href="index.htm" alt="Java and XSLT" /><area shape="rect" coords="629,-11,726,25" href="jobjects/fsearch.htm" alt="Search this book" /></map><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_195.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228" /><td align="right" valign="top" width="228"><a href="ch08_197.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">8.196. Term::Cap</h2><p><a name="INDEX-1560" />Provides low-level functions to extractand use capabilities from a terminal capability (termcap) database.For general information about the use of this database, see the<em class="emphasis">termcap(5)</em> manpage. Provides the followingfunctions.</p><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Tgetent</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">terminal</em> = Tgetent Term::Cap { TERM => <em class="replaceable">termtype</em>, OSPEED=><em class="replaceable">ospeed</em> }</pre><p>Acts as the constructor for Term::Cap. Extracts the termcap entry forterminal type <em class="replaceable"><tt>termtype</tt></em> and returns areference to a terminal object. The termcap entry itself is<tt class="literal">$terminal->{TERMCAP}</tt>. Calls<tt class="literal">Carp::croak</tt> on failure. Takes the followingarguments:</p><dl><dt><b><tt class="literal">TERM =></tt> <em class="replaceable">termtype</em></b></dt><dd>Terminal type. Defaults to the value of the environment variable TERMif <em class="replaceable"><tt>termtype</tt></em> is false or undefined.</p></dd><dt><b><tt class="literal">OSPEED =></tt> <em class="replaceable">ospeed</em></b></dt><dd>The terminal output bit rate, specified as either a POSIXtermios/SYSV termio speed or an old BSD-style speed. You can use thePOSIX module to get your terminal's output speed (in<em class="replaceable"><tt>ospeed</tt></em> here).</p></dd></dl></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Tgoto</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">terminal</em>->Tgoto('cm', <em class="replaceable">col</em>, <em class="replaceable">row</em>[, <em class="replaceable">fh</em>])</pre><p>Produces control string to move the cursor relative to the screen.Doesn't cache output strings, but does<tt class="literal">%</tt> expansion as needed on control string. Takes thefollowing arguments:</p><dl><dt><b><tt class="literal">'cm'</tt></b></dt><dd>Required first argument ("cursormove")</p></dd><dt><i><em class="replaceable"><tt>col, row</tt></em></i></dt><dd>Column and row to move cursor to</p></dd><dt><i><em class="replaceable"><tt>fh</tt></em></i></dt><dd>Filehandle that will receive the control string</p></dd></dl></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Tpad</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">terminal</em>->Tpad(<em class="replaceable">string</em>, <em class="replaceable">count</em>, <em class="replaceable">fh</em>)</pre><p>Specifies padding required to create delay needed by terminal. Takesthe following arguments:</p><dl><dt><i><em class="replaceable"><tt>string</tt></em></i></dt><dd>The string to pad with</p></dd><dt><i><em class="replaceable"><tt>count</tt></em></i></dt><dd>The number of pad characters</p></dd><dt><i><em class="replaceable"><tt>fh</tt></em></i></dt><dd>The filehandle to pad</p></dd></dl></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Tputs</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">terminal</em>->Tputs('<em class="replaceable">cap</em>', <em class="replaceable">count</em>[, <em class="replaceable">fh</em>])</pre><p>Produces control string for capabilities other than cursor movement.Does not do <tt class="literal">%</tt> expansion, but does cache outputstrings if <tt class="literal">$count = 1</tt>. Takes the followingarguments:</p><dl><dt><i><em class="replaceable"><tt>cap</tt></em></i></dt><dd>Capability to produce control string for</p></dd><dt><i><em class="replaceable"><tt>count</tt></em></i></dt><dd>Should be <tt class="literal">1</tt> unless padding is required (see<tt class="literal">Tpad</tt>); if greater than <tt class="literal">1</tt>,specifies amount of padding</p></dd><dt><i><em class="replaceable"><tt>fh</tt></em></i></dt><dd>Filehandle to receive the control string</p></dd></dl></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Trequire</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">terminal</em>->Trequire(<em class="replaceable">caps</em>)</pre><p>Checks to see whether the named capabilities,<em class="replaceable"><tt>caps</tt></em>, are defined in theterminal's termcap entry. For example:</p><blockquote><pre class="code">$terminal->Trequire(qw/ce ku kd/);</pre></blockquote><p>Any undefined capabilities are listed, and<tt class="literal">Carp::croak</tt> is called.</p></div><hr width="684" align="left" /><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_195.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0" /></a></td><td align="right" valign="top" width="228"><a href="ch08_197.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">8.195. Sys::Syslog</td><td align="center" valign="top" width="228"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0" /></a></td><td align="right" valign="top" width="228">8.197. Term::Complete</td></tr></table></div><hr width="684" align="left" /><img src="../gifs/navbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links" /><p><p><font size="-1"><a href="copyrght.htm">Copyright © 2002</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"><area shape="rect" coords="1,0,85,94" href="../index.htm"><area shape="rect" coords="86,1,178,103" href="../lwp/index.htm"><area shape="rect" coords="180,0,265,103" href="../lperl/index.htm"><area shape="rect" coords="267,0,353,105" href="../perlnut/index.htm"><area shape="rect" coords="354,1,446,115" href="../prog/index.htm"><area shape="rect" coords="448,0,526,132" href="../tk/index.htm"><area shape="rect" coords="528,1,615,119" href="../cookbook/index.htm"><area shape="rect" coords="617,0,690,135" href="../pxml/index.htm"></map></body></html>⌨️ 快捷键说明
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