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<html><!-- #BeginTemplate "/Templates/tmpl.dwt" --><head><!-- #BeginEditable "doctitle" --> <title>PTypes: streams</title><!-- #EndEditable --> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><link rel="stylesheet" href="styles.css"></head><body bgcolor="#FFFFFF" leftmargin="40" marginwidth="40"><p><a href="../index.html"><img src="title-1.7.gif" width="213" height="34" alt="C++ Portable Types Library (PTypes) Version 1.7" border="0"></a> <hr noshade><!-- #BeginEditable "body" --> <p class="hpath"><a href="index.html">Top</a>: Streams</p><ul><li> <h5><a href="streams.iobase.html">iobase</a> - common input/output interface</h5></li><li> <h5><a href="streams.instm.html">instm</a> - basic input stream</h5></li><li> <h5><a href="streams.outstm.html">outstm</a> - basic output stream</h5></li><li> <h5><a href="streams.infile.html">infile</a> - file input</h5></li><li> <h5><a href="streams.outfile.html">outfile</a> - file output</h5></li><li> <h5><a href="streams.namedpipe.html">namedpipe</a> - named pipe/UNIX local socket</h5></li><li><h5><a href="streams.npserver.html">npserver</a> - named pipe server</h5></li><li> <h5><a href="streams.stdio.html">Standard input, output and error devices</a></h5></li><li> <h5><a href="streams.md5.html">outmd5</a> - MD5 message digest computation</h5></li><li> <h5><a href="streams.inmem.html">inmemory</a> - memory input</h5></li><li> <h5><a href="streams.outmem.html">outmemory</a> - memory output</h5></li><li> <h5><a href="streams.errors.html">Error handling</a></h5></li><li> <h5><a href="streams.examples.html">Examples</a></h5></li></ul><p>The stream input/output module, which is an integral part of PTypes, declares a family of classes that implement abstract functionality of stream-oriented data processing. The main features of this module include:</p><ul><li> Text processing utilities, such like token extraction using character sets.</li><li> Buffering: both input and output streams can be buffered to speed up operation.</li><li> Scalability: the functionality of either input or output streams can be overridden by providing several low-level routines for the given device or communication protocol.</li><li> System-independent error handling: regardless of the system on which the library is compiled, the error codes are presented in UNIX "errno" semantics.</li></ul><p>The basic class <a href="streams.iobase.html">iobase</a> encapsulates features common to both input and output, such like buffering, event and error handling, etc. This class is derived from <a href="unknown.html">component</a>. Two descendant classes -- <a href="streams.instm.html">instm</a> and <a href="streams.outstm.html">outstm</a> -- specialize in data input and output respectively, as well as provide simple and powerful text processing utility methods.</p><p>PTypes declares three built-in objects for <a href="streams.stdio.html">standard input, output and error devices</a>. </p><p>All recoverable error conditions generate exceptions of class <span class="lang">(estream*)</span>. See <a href="streams.errors.html">Error handling</a> for details.</p><p>Some encapsulated structure fields in this module are accessed through <span class="lang">get_X()</span> and <span class="lang">set_X()</span> function pairs. To simplify documentation, we use a single description in the form <span class="lang">get/set_X()</span> for such fields, and sometimes we refer to them as <i>properties</i>.</p><p>The stream i/o class family is declared in <span class="lang"><pstreams.h></span>.</p><p class="seealso">See also: <a href="inet.html">Networking</a></p><!-- #EndEditable --><hr size="1"><a href="../index.html" class="ns">PTypes home</a></body><!-- #EndTemplate --></html>⌨️ 快捷键说明
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