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<li class="navelem"><a class="el" href="namespaceost.html">ost</a></li><li class="navelem"><a class="el" href="classost_1_1_x_m_l_stream.html">XMLStream</a></li> </ul>
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<p>This class impliments a basic XML stream parser that can be used to examine an XML resource thru virtual I/O methods.
<a href="classost_1_1_x_m_l_stream.html#details">More...</a></p>
<p><code>#include <<a class="el" href="xml_8h_source.html">xml.h</a>></code></p>
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Inheritance diagram for ost::XMLStream:</div>
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<area href="classost_1_1_x_m_l_r_p_c.html" title="This class impliments a core XMLRPC service without the underlying transports. " alt="ost::XMLRPC" shape="rect" coords="0,56,100,80"/>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a499e60e5b1b0e88d2f856e4bc8c63db8"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a499e60e5b1b0e88d2f856e4bc8c63db8">open</a> (const char *resource)</td></tr>
<tr class="memdesc:a499e60e5b1b0e88d2f856e4bc8c63db8"><td class="mdescLeft"> </td><td class="mdescRight">May perform an open operation on behalf of a parsed resource. <a href="#a499e60e5b1b0e88d2f856e4bc8c63db8">More...</a><br/></td></tr>
<tr class="separator:a499e60e5b1b0e88d2f856e4bc8c63db8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5a581fb0b2875b0714a893837e2e5d11"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a5a581fb0b2875b0714a893837e2e5d11">close</a> (void)</td></tr>
<tr class="memdesc:a5a581fb0b2875b0714a893837e2e5d11"><td class="mdescLeft"> </td><td class="mdescRight">May perform a close operation of an i/o source when the parser has completed operation. <a href="#a5a581fb0b2875b0714a893837e2e5d11">More...</a><br/></td></tr>
<tr class="separator:a5a581fb0b2875b0714a893837e2e5d11"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1981d1aa643f5aad965693c7a4132502"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classost_1_1_slog.html#a47ef36225607dba90b4be5012daccd7a">Slog::Level</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a1981d1aa643f5aad965693c7a4132502">getLogging</a> (void)</td></tr>
<tr class="memdesc:a1981d1aa643f5aad965693c7a4132502"><td class="mdescLeft"> </td><td class="mdescRight">Get error logging level. <a href="#a1981d1aa643f5aad965693c7a4132502">More...</a><br/></td></tr>
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<tr class="memitem:ad0dce01d08f35d642960867c0f5ccfbd"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#ad0dce01d08f35d642960867c0f5ccfbd">comment</a> (const unsigned char *text, size_t len)</td></tr>
<tr class="memdesc:ad0dce01d08f35d642960867c0f5ccfbd"><td class="mdescLeft"> </td><td class="mdescRight">Virtual to receive embedded comments in an XML document being parsed. <a href="#ad0dce01d08f35d642960867c0f5ccfbd">More...</a><br/></td></tr>
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<tr class="memitem:a64e401b6b98c28523719d021f11acd52"><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a64e401b6b98c28523719d021f11acd52">read</a> (unsigned char *buffer, size_t len)=0</td></tr>
<tr class="memdesc:a64e401b6b98c28523719d021f11acd52"><td class="mdescLeft"> </td><td class="mdescRight">Read method to aquire data for the parser. <a href="#a64e401b6b98c28523719d021f11acd52">More...</a><br/></td></tr>
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<tr class="memitem:af0962a8d37d7a17d8aff75c9409bf72f"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#af0962a8d37d7a17d8aff75c9409bf72f">characters</a> (const unsigned char *text, size_t len)=0</td></tr>
<tr class="memdesc:af0962a8d37d7a17d8aff75c9409bf72f"><td class="mdescLeft"> </td><td class="mdescRight">Virtual to receive character text extracted from the document in the current element. <a href="#af0962a8d37d7a17d8aff75c9409bf72f">More...</a><br/></td></tr>
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<tr class="memitem:a4a4305dffd6b1eb7cdb6afd373fec8ef"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a4a4305dffd6b1eb7cdb6afd373fec8ef">startDocument</a> (void)</td></tr>
<tr class="memdesc:a4a4305dffd6b1eb7cdb6afd373fec8ef"><td class="mdescLeft"> </td><td class="mdescRight">Identify start of document event. <a href="#a4a4305dffd6b1eb7cdb6afd373fec8ef">More...</a><br/></td></tr>
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<tr class="memitem:abc1e0f16c8100aadfde6acec56c2029e"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#abc1e0f16c8100aadfde6acec56c2029e">endDocument</a> (void)</td></tr>
<tr class="memdesc:abc1e0f16c8100aadfde6acec56c2029e"><td class="mdescLeft"> </td><td class="mdescRight">Identify end of document event. <a href="#abc1e0f16c8100aadfde6acec56c2029e">More...</a><br/></td></tr>
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<tr class="memitem:aa2ccb9652149b6e461902c102b8ccde6"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#aa2ccb9652149b6e461902c102b8ccde6">startElement</a> (const unsigned char *name, const unsigned char **attr)=0</td></tr>
<tr class="memdesc:aa2ccb9652149b6e461902c102b8ccde6"><td class="mdescLeft"> </td><td class="mdescRight">Identify start of an element in the document. <a href="#aa2ccb9652149b6e461902c102b8ccde6">More...</a><br/></td></tr>
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<tr class="memitem:a74d63a5adf80d81d61888aad632f2b7d"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a74d63a5adf80d81d61888aad632f2b7d">endElement</a> (const unsigned char *name)=0</td></tr>
<tr class="memdesc:a74d63a5adf80d81d61888aad632f2b7d"><td class="mdescLeft"> </td><td class="mdescRight">Identify end of an element in the document. <a href="#a74d63a5adf80d81d61888aad632f2b7d">More...</a><br/></td></tr>
<tr class="separator:a74d63a5adf80d81d61888aad632f2b7d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a98568a87c3d747583f8851f6d3f9fb1d"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a98568a87c3d747583f8851f6d3f9fb1d">parse</a> (const char *resource=NULL)</td></tr>
<tr class="memdesc:a98568a87c3d747583f8851f6d3f9fb1d"><td class="mdescLeft"> </td><td class="mdescRight">Parse a resource as a stream thru the virtual read method. <a href="#a98568a87c3d747583f8851f6d3f9fb1d">More...</a><br/></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:a71e5d08fcb8ef8a5a91c7aec12111d32"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a71e5d08fcb8ef8a5a91c7aec12111d32">~XMLStream</a> ()</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This class impliments a basic XML stream parser that can be used to examine an XML resource thru virtual I/O methods. </p>
<p>This class must be derived into one that can impliment the physical I/O required to parse actual data. A mixer class using <a class="el" href="classost_1_1_x_m_l_stream.html" title="This class impliments a basic XML stream parser that can be used to examine an XML resource thru virt...">XMLStream</a> and <a class="el" href="classost_1_1_u_r_l_stream.html" title="A URL processing version of TCPStream. ">URLStream</a> would seem a likely combination for this purpose.</p>
<dl class="section author"><dt>Author</dt><dd>David Sugar <a href="#" onclick="location.href='mai'+'lto:'+'dyf'+'et'+'@os'+'te'+'l.c'+'om'; return false;">dyfet<span style="display: none;">.nosp@m.</span>@ost<span style="display: none;">.nosp@m.</span>el.co<span style="display: none;">.nosp@m.</span>m</a> XML Stream Parser (SAX) </dd></dl>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="xmlfetch_8cpp-example.html#_a1">xmlfetch.cpp</a>.</dd>
</dl></div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td>(</td>
<td class="paramname"></td><td>)</td>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">virtual void ost::XMLStream::characters </td>
<td>(</td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>text</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">size_t </td>
<td class="paramname"><em>len</em> </td>
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<p>Virtual to receive character text extracted from the document in the current element. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">text</td><td>received. </td></tr>
<tr><td class="paramname">len</td><td>length of text received. </td></tr>
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</dd>
</dl>
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<td class="memname">virtual void ost::XMLStream::close </td>
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<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
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<p>May perform a close operation of an i/o source when the parser has completed operation. </p>
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<td>(</td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>text</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">size_t </td>
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<p>Virtual to receive embedded comments in an XML document being parsed. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">text</td><td>text comment extracted. </td></tr>
<tr><td class="paramname">len</td><td>length of comment. </td></tr>
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</dd>
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<td class="memname">virtual void ost::XMLStream::endDocument </td>
<td>(</td>
<td class="paramtype">void </td>
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<p>Identify end of document event. </p>
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<td>(</td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>name</em></td><td>)</td>
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<p>Identify end of an element in the document. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">name</td><td>of element found. </td></tr>
</table>
</dd>
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<td class="memname">virtual <a class="el" href="classost_1_1_slog.html#a47ef36225607dba90b4be5012daccd7a">Slog::Level</a> ost::XMLStream::getLogging </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
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<p>Get error logging level. </p>
<dl class="section return"><dt>Returns</dt><dd>error logging level. </dd></dl>
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<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>resource</em></td><td>)</td>
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<p>May perform an open operation on behalf of a parsed resource. </p>
<p>In some cases, the parser may be merged with a class that already has performed some kind of open, and this method can then be ignored.</p>
<dl class="section return"><dt>Returns</dt><dd>true if open is successful. </dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">resource</td><td>passed to Parse methods. </td></tr>
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</dd>
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<td class="paramtype">const char * </td>
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<p>Parse a resource as a stream thru the virtual read method. </p>
<dl class="section return"><dt>Returns</dt><dd>true if well formed document has been fully parsed. </dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">resource</td><td>optional name of resource. </td></tr>
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</dd>
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<td>(</td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>buffer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Read method to aquire data for the parser. </p>
<dl class="section return"><dt>Returns</dt><dd>number of bytes actually read. </dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">buffer</td><td>to read data into. </td></tr>
<tr><td class="paramname">len</td><td>number of bytes to read. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a4a4305dffd6b1eb7cdb6afd373fec8ef"></a>
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<td class="memname">virtual void ost::XMLStream::startDocument </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
</tr>
</table>
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<p>Identify start of document event. </p>
</div>
</div>
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<td class="memname">virtual void ost::XMLStream::startElement </td>
<td>(</td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char ** </td>
<td class="paramname"><em>attr</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
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<p>Identify start of an element in the document. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">name</td><td>of element found. </td></tr>
<tr><td class="paramname">attr</td><td>list of attributes extracted. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="xml_8h_source.html">xml.h</a></li>
</ul>
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