<!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::URIStreamOpener</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 URIStreamOpener</h1> </div> <div class="body"> <p> <b>Library:</b> Foundation<br /> <b>Package:</b> URI<br /> <b>Header:</b> Poco/URIStreamOpener.h</p> <h2>Description</h2> <div class="description"> <p>The <a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a> class is used to create and open input streams for resourced identified by Uniform Resource Identifiers. </p> <p>For every <a href="Poco.URI.html" title="class Poco::URI">URI</a> scheme used, a <a href="Poco.URIStreamFactory.html" title="class Poco::URIStreamFactory">URIStreamFactory</a> must be registered. A <a href="Poco.FileStreamFactory.html" title="class Poco::FileStreamFactory">FileStreamFactory</a> is automatically registered for file URIs. </p> </div> <h2>Member Summary</h2> <p><b>Member Functions: </b><a href="Poco.URIStreamOpener.html#11543" title="Poco::URIStreamOpener::defaultOpener()">defaultOpener</a>, <a href="Poco.URIStreamOpener.html#11529" title="Poco::URIStreamOpener::open()">open</a>, <a href="Poco.URIStreamOpener.html#11544" title="Poco::URIStreamOpener::openFile()">openFile</a>, <a href="Poco.URIStreamOpener.html#11546" title="Poco::URIStreamOpener::openURI()">openURI</a>, <a href="Poco.URIStreamOpener.html#11536" title="Poco::URIStreamOpener::registerStreamFactory()">registerStreamFactory</a>, <a href="Poco.URIStreamOpener.html#11541" title="Poco::URIStreamOpener::supportsScheme()">supportsScheme</a>, <a href="Poco.URIStreamOpener.html#11539" title="Poco::URIStreamOpener::unregisterStreamFactory()">unregisterStreamFactory</a></p> <h2>Enumerations</h2> <h3><i>Anonymous</i></h3> <div class="description"> <p></p> </div> <p class="decl"><a name="11526">MAX_REDIRECTS</a> = 10</p> <div class="description"> <p></p> </div> <h2>Constructors</h2> <h3><a name="11527">URIStreamOpener</a></h3> <p class="decl"><a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a>();</p> <div class="description"> <p>Creates the <a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a> and registers a <a href="Poco.FileStreamFactory.html" title="class Poco::FileStreamFactory">FileStreamFactory</a> for file URIs. </p> </div> <h2>Destructor</h2> <h3><a name="11528">~URIStreamOpener</a></h3> <p class="decl">~<a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a>();</p> <div class="description"> <p>Destroys the <a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a> and deletes all registered <a href="Poco.URI.html" title="class Poco::URI">URI</a> stream factories. </p> </div> <h2>Member Functions</h2> <h3><a name="11543">defaultOpener</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3> <p class="decl">static <a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a> & defaultOpener();</p> <div class="description"> <p>Returns a reference to the default <a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a>. </p> </div> <h3><a name="11529">open</a></h3> <p class="decl">std::istream * open(<br /> const <a href="Poco.URI.html" title="class Poco::URI">URI</a> & uri<br />) const;</p> <div class="description"> <p>Tries to create and open an input stream for the resource specified by the given uniform resource identifier. </p> <p>If no <a href="Poco.URIStreamFactory.html" title="class Poco::URIStreamFactory">URIStreamFactory</a> has been registered for the <a href="Poco.URI.html" title="class Poco::URI">URI</a>'s scheme, a UnknownURIScheme exception is thrown. If the stream cannot be opened for any reason, an <a href="Poco.IOException.html" title="class Poco::IOException">IOException</a> is thrown. </p> <p>The given <a href="Poco.URI.html" title="class Poco::URI">URI</a> must be a valid one. This excludes file system paths. </p> <p>Whoever calls the method is responsible for deleting the returned stream. </p> </div> <h3><a name="11531">open</a></h3> <p class="decl">std::istream * open(<br /> const std::string & pathOrURI<br />) const;</p> <div class="description"> <p>Tries to create and open an input stream for the resource specified by the given path or uniform resource identifier. </p> <p>If the stream cannot be opened for any reason, an <a href="Poco.Exception.html" title="class Poco::Exception">Exception</a> is thrown. </p> <p>The method first tries to interpret the given pathOrURI as an <a href="Poco.URI.html" title="class Poco::URI">URI</a>. If this fails, the pathOrURI is treated as local filesystem path. If this also fails, an exception is thrown. </p> <p>Whoever calls the method is responsible for deleting the returned stream. </p> </div> <h3><a name="11533">open</a></h3> <p class="decl">std::istream * open(<br /> const std::string & basePathOrURI,<br /> const std::string & pathOrURI<br />) const;</p> <div class="description"> <p>Tries to create and open an input stream for the resource specified by the given path or uniform resource identifier. </p> <p>pathOrURI is resolved against basePathOrURI (see <a href="Poco.URI.html#11430" title="Poco::URI::resolve()">URI::resolve</a>() and <a href="Poco.Path.html#9234" title="Poco::Path::resolve()">Path::resolve</a>() for more information). </p> <p>If the stream cannot be opened for any reason, an <a href="Poco.Exception.html" title="class Poco::Exception">Exception</a> is thrown. </p> <p>Whoever calls the method is responsible for deleting the returned stream. </p> </div> <h3><a name="11536">registerStreamFactory</a></h3> <p class="decl">void registerStreamFactory(<br /> const std::string & scheme,<br /> <a href="Poco.URIStreamFactory.html" title="class Poco::URIStreamFactory">URIStreamFactory</a> * pFactory<br />);</p> <div class="description"> <p>Registers a <a href="Poco.URIStreamFactory.html" title="class Poco::URIStreamFactory">URIStreamFactory</a> for the given scheme. If another factory has already been registered for the scheme, an <a href="Poco.ExistsException.html" title="class Poco::ExistsException">ExistsException</a> is thrown. </p> <p>The <a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a> takes ownership of the factory and deletes it when it is no longer needed (in other words, when the <a href="Poco.URIStreamOpener.html" title="class Poco::URIStreamOpener">URIStreamOpener</a> is deleted). </p> </div> <h3><a name="11541">supportsScheme</a></h3> <p class="decl">bool supportsScheme(<br /> const std::string & scheme<br />);</p> <div class="description"> <p>Returns true if and only if a <a href="Poco.URIStreamFactory.html" title="class Poco::URIStreamFactory">URIStreamFactory</a> for the given scheme has been registered. </p> </div> <h3><a name="11539">unregisterStreamFactory</a></h3> <p class="decl">void unregisterStreamFactory(<br /> const std::string & scheme<br />);</p> <div class="description"> <p>Unregisters and deletes the <a href="Poco.URIStreamFactory.html" title="class Poco::URIStreamFactory">URIStreamFactory</a> for the given scheme. </p> <p>Throws a <a href="Poco.NotFoundException.html" title="class Poco::NotFoundException">NotFoundException</a> if no <a href="Poco.URIStreamFactory.html" title="class Poco::URIStreamFactory">URIStreamFactory</a> has been registered for the given scheme. </p> </div> <h3><a name="11544">openFile</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3> <p class="decl">std::istream * openFile(<br /> const <a href="Poco.Path.html" title="class Poco::Path">Path</a> & path<br />) const;</p> <div class="description"> <p></p> </div> <h3><a name="11546">openURI</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3> <p class="decl">std::istream * openURI(<br /> const std::string & scheme,<br /> const <a href="Poco.URI.html" title="class Poco::URI">URI</a> & uri<br />) const;</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>
