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<!DOCTYPE html><html><head>
<title>tcl::transform::zlib - Reflected/virtual channel support</title>
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<div class="doctools">
<h1 class="doctools_title">tcl::transform::zlib(n) 1 tcllib "Reflected/virtual channel support"</h1>
<div id="name" class="doctools_section"><h2><a name="name">Name</a></h2>
<p>tcl::transform::zlib - zlib (de)compression</p>
</div>
<div id="toc" class="doctools_section"><h2><a name="toc">Table Of Contents</a></h2>
<ul class="doctools_toc">
<li class="doctools_section"><a href="#toc">Table Of Contents</a></li>
<li class="doctools_section"><a href="#synopsis">Synopsis</a></li>
<li class="doctools_section"><a href="#section1">Description</a></li>
<li class="doctools_section"><a href="#section2">API</a></li>
<li class="doctools_section"><a href="#section3">Bugs, Ideas, Feedback</a></li>
<li class="doctools_section"><a href="#keywords">Keywords</a></li>
<li class="doctools_section"><a href="#category">Category</a></li>
<li class="doctools_section"><a href="#copyright">Copyright</a></li>
</ul>
</div>
<div id="synopsis" class="doctools_section"><h2><a name="synopsis">Synopsis</a></h2>
<div class="doctools_synopsis">
<ul class="doctools_requirements">
<li>package require <b class="pkgname">Tcl 8.6</b></li>
<li>package require <b class="pkgname">tcl::transform::core <span class="opt">?1?</span></b></li>
<li>package require <b class="pkgname">tcl::transform::zlib <span class="opt">?1?</span></b></li>
</ul>
<ul class="doctools_syntax">
<li><a href="#1"><b class="cmd">::tcl::transform::zlib</b> <i class="arg">chan</i> <span class="opt">?<i class="arg">level</i>?</span></a></li>
</ul>
</div>
</div>
<div id="section1" class="doctools_section"><h2><a name="section1">Description</a></h2>
<p>The <b class="package">tcl::transform::zlib</b> package provides a command creating
a channel transformation which zlib compresses the written data, and
decompresses on reading.</p>
<p>The internal <b class="package"><a href="../../../../index.html#tcloo">TclOO</a></b> class implementing the transform
handler is a sub-class of the <b class="package"><a href="../virtchannel_core/transformcore.html">tcl::transform::core</a></b>
framework.</p>
</div>
<div id="section2" class="doctools_section"><h2><a name="section2">API</a></h2>
<dl class="doctools_definitions">
<dt><a name="1"><b class="cmd">::tcl::transform::zlib</b> <i class="arg">chan</i> <span class="opt">?<i class="arg">level</i>?</span></a></dt>
<dd><p>This command creates a zlib compressor transformation on top of the
channel <i class="arg">chan</i> and returns its handle.</p>
<p>The <i class="arg">level</i> specifies how much effort is put into the
compression, from <b class="const">0</b> to <b class="const">9</b>, and defaults to <b class="const">4</b>.</p></dd>
</dl>
</div>
<div id="section3" class="doctools_section"><h2><a name="section3">Bugs, Ideas, Feedback</a></h2>
<p>This document, and the package it describes, will undoubtedly contain
bugs and other problems.
Please report such in the category <em>virtchannel</em> of the
<a href="http://core.tcl.tk/tcllib/reportlist">Tcllib Trackers</a>.
Please also report any ideas for enhancements you may have for either
package and/or documentation.</p>
<p>When proposing code changes, please provide <em>unified diffs</em>,
i.e the output of <b class="const">diff -u</b>.</p>
<p>Note further that <em>attachments</em> are strongly preferred over
inlined patches. Attachments can be made by going to the <b class="const">Edit</b>
form of the ticket immediately after its creation, and then using the
left-most button in the secondary navigation bar.</p>
</div>
<div id="keywords" class="doctools_section"><h2><a name="keywords">Keywords</a></h2>
<p><a href="../../../../index.html#channel_transformation">channel transformation</a>, <a href="../../../../index.html#compression">compression</a>, <a href="../../../../index.html#decompression">decompression</a>, <a href="../../../../index.html#reflected_channel">reflected channel</a>, <a href="../../../../index.html#tip_230">tip 230</a>, <a href="../../../../index.html#tip_234">tip 234</a>, <a href="../../../../index.html#transformation">transformation</a>, <a href="../../../../index.html#virtual_channel">virtual channel</a>, <a href="../../../../index.html#zlib">zlib</a></p>
</div>
<div id="category" class="doctools_section"><h2><a name="category">Category</a></h2>
<p>Channels</p>
</div>
<div id="copyright" class="doctools_section"><h2><a name="copyright">Copyright</a></h2>
<p>Copyright © 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net></p>
</div>
</div></body></html>
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