<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Class Poco::DeflatingStreamBuf</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <meta name="author" content="Applied Informatics Software Engineering GmbH and Contributors"/> <meta name="publisher" content="Applied Informatics Software Engineering GmbH and Contributors"/> <meta name="copyright" content="Copyright (c) 2009, Applied Informatics Software Engineering GmbH and Contributors"/> <meta name="language" content="en"/> <meta name="date" content="2009-11-24"/> <meta name="generator" content="PocoDoc"/> <link rel="stylesheet" href="css/styles.css" type="text/css"/> </head> <body bgcolor="#ffffff" leftmargin="0" topmargin="0"> <div class="header"> <h1 class="namespace"><a href="Poco.html" class="namespace">Poco</a></h1> <h1 class="symbol">class DeflatingStreamBuf</h1> </div> <div class="body"> <p> <b>Library:</b> Foundation<br /> <b>Package:</b> Streams<br /> <b>Header:</b> Poco/DeflatingStream.h</p> <h2>Description</h2> <div class="description"> <p>This is the streambuf class used by <a href="Poco.DeflatingInputStream.html" title="class Poco::DeflatingInputStream">DeflatingInputStream</a> and <a href="Poco.DeflatingOutputStream.html" title="class Poco::DeflatingOutputStream">DeflatingOutputStream</a>. The actual work is delegated to zlib 1.2.1 (see <a href="http://www.gzip.org" target="_blank">http://www.gzip.org</a>). Both zlib (deflate) streams and gzip streams are supported. Output streams should always call <a href="Poco.DeflatingStreamBuf.html#4632" title="Poco::DeflatingStreamBuf::close()">close</a>() to ensure proper completion of compression. A compression level (0 to 9) can be specified in the constructor. </p> </div> <h2>Inheritance</h2> <p><b>Direct Base Classes: </b>BufferedStreamBuf</p> <p><b>All Base Classes: </b><a href="Poco.html#4028" title="Poco::BufferedStreamBuf">BufferedStreamBuf</a></p> <h2>Member Summary</h2> <p><b>Member Functions: </b><a href="Poco.DeflatingStreamBuf.html#4632" title="Poco::DeflatingStreamBuf::close()">close</a>, <a href="Poco.DeflatingStreamBuf.html#4633" title="Poco::DeflatingStreamBuf::readFromDevice()">readFromDevice</a>, <a href="Poco.DeflatingStreamBuf.html#4636" title="Poco::DeflatingStreamBuf::writeToDevice()">writeToDevice</a></p> <h2>Enumerations</h2> <h3><a name="4620">StreamType</a></h3> <div class="description"> <p></p> </div> <p class="decl"><a name="4621">STREAM_ZLIB</a></p> <div class="description"> <p></p> </div> <p class="decl"><a name="4622">STREAM_GZIP</a></p> <div class="description"> <p></p> </div> <h2>Constructors</h2> <h3><a name="4623">DeflatingStreamBuf</a></h3> <p class="decl"><a href="Poco.DeflatingStreamBuf.html" title="class Poco::DeflatingStreamBuf">DeflatingStreamBuf</a>(<br /> std::istream & istr,<br /> <a href="Poco.DeflatingStreamBuf.html#4620" title="enum Poco::DeflatingStreamBuf::StreamType">StreamType</a> type,<br /> int level<br />);</p> <div class="description"> <p></p> </div> <h3><a name="4627">DeflatingStreamBuf</a></h3> <p class="decl"><a href="Poco.DeflatingStreamBuf.html" title="class Poco::DeflatingStreamBuf">DeflatingStreamBuf</a>(<br /> std::ostream & ostr,<br /> <a href="Poco.DeflatingStreamBuf.html#4620" title="enum Poco::DeflatingStreamBuf::StreamType">StreamType</a> type,<br /> int level<br />);</p> <div class="description"> <p></p> </div> <h2>Destructor</h2> <h3><a name="4631">~DeflatingStreamBuf</a></h3> <p class="decl">~<a href="Poco.DeflatingStreamBuf.html" title="class Poco::DeflatingStreamBuf">DeflatingStreamBuf</a>();</p> <div class="description"> <p></p> </div> <h2>Member Functions</h2> <h3><a name="4632">close</a></h3> <p class="decl">int close();</p> <div class="description"> <p></p> </div> <h3><a name="4633">readFromDevice</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3> <p class="decl">int readFromDevice(<br /> char * buffer,<br /> std::streamsize length<br />);</p> <div class="description"> <p></p> </div> <h3><a name="4636">writeToDevice</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3> <p class="decl">int writeToDevice(<br /> const char * buffer,<br /> std::streamsize length<br />);</p> <div class="description"> <p></p> </div> <p class="footer">POCO C++ Libraries 1.3.6-all<br /> Copyright © 2009, <a href="http://pocoproject.org/" target="_blank">Applied Informatics Software Engineering GmbH and Contributors</a></p> </div> </body> </html>
