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<a class="el" href="namespaceost.html">ost</a>::<a class="el" href="classost_1_1_x_m_l_stream.html">XMLStream</a></div>
<h1>ost::XMLStream Class Reference</h1><!-- doxytag: class="ost::XMLStream" -->This class impliments a basic XML stream parser that can be used to examine an XML resource thru virtual I/O methods.XML Stream Parser (SAX).
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="xml_8h-source.html">xml.h</a>></code>
<p>
<p>Inheritance diagram for ost::XMLStream:
<p><center><img src="classost_1_1_x_m_l_stream.png" usemap="#ost::XMLStream_map" border="0" alt=""></center>
<map name="ost::XMLStream_map">
<area href="classost_1_1_x_m_l_r_p_c.html" alt="ost::XMLRPC" shape="rect" coords="0,56,100,80">
</map>
<a href="classost_1_1_x_m_l_stream-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#499e60e5b1b0e88d2f856e4bc8c63db8">open</a> (const char *resource)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">May perform an open operation on behalf of a parsed resource. <a href="#499e60e5b1b0e88d2f856e4bc8c63db8"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#5a581fb0b2875b0714a893837e2e5d11">close</a> (void)</td></tr>
<tr><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="#5a581fb0b2875b0714a893837e2e5d11"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classost_1_1_slog.html#f139df7abeea150282dbbb29b4c24cee">Slog::Level</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#1981d1aa643f5aad965693c7a4132502">getLogging</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get error logging level. <a href="#1981d1aa643f5aad965693c7a4132502"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#d0dce01d08f35d642960867c0f5ccfbd">comment</a> (const unsigned char *text, size_t len)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Virtual to receive embedded comments in an XML document being parsed. <a href="#d0dce01d08f35d642960867c0f5ccfbd"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#64e401b6b98c28523719d021f11acd52">read</a> (unsigned char *buffer, size_t len)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Read method to aquire data for the parser. <a href="#64e401b6b98c28523719d021f11acd52"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#f0962a8d37d7a17d8aff75c9409bf72f">characters</a> (const unsigned char *text, size_t len)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Virtual to receive character text extracted from the document in the current element. <a href="#f0962a8d37d7a17d8aff75c9409bf72f"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#4a4305dffd6b1eb7cdb6afd373fec8ef">startDocument</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Identify start of document event. <a href="#4a4305dffd6b1eb7cdb6afd373fec8ef"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#bc1e0f16c8100aadfde6acec56c2029e">endDocument</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Identify end of document event. <a href="#bc1e0f16c8100aadfde6acec56c2029e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#a2ccb9652149b6e461902c102b8ccde6">startElement</a> (const unsigned char *name, const unsigned char **attr)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Identify start of an element in the document. <a href="#a2ccb9652149b6e461902c102b8ccde6"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#74d63a5adf80d81d61888aad632f2b7d">endElement</a> (const unsigned char *name)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Identify end of an element in the document. <a href="#74d63a5adf80d81d61888aad632f2b7d"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#98568a87c3d747583f8851f6d3f9fb1d">parse</a> (const char *resource=NULL)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Parse a resource as a stream thru the virtual read method. <a href="#98568a87c3d747583f8851f6d3f9fb1d"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classost_1_1_x_m_l_stream.html#71e5d08fcb8ef8a5a91c7aec12111d32">~XMLStream</a> ()</td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
This class impliments a basic XML stream parser that can be used to examine an XML resource thru virtual I/O methods.XML Stream Parser (SAX).
<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">XMLStream</a> and <a class="el" href="classost_1_1_u_r_l_stream.html">URLStream</a> would seem a likely combination for this purpose.<p>
<dl compact><dt><b>Author:</b></dt><dd>David Sugar <<a href="mailto:dyfet@ostel.com">dyfet@ostel.com</a>> </dd></dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<p>
<a class="el" href="xmlfetch_8cpp-example.html#_a96">xmlfetch.cpp</a>.</dl>
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="71e5d08fcb8ef8a5a91c7aec12111d32"></a><!-- doxytag: member="ost::XMLStream::~XMLStream" ref="71e5d08fcb8ef8a5a91c7aec12111d32" args="()" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">virtual ost::XMLStream::~XMLStream </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
</tr>
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</td>
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<table cellspacing="5" cellpadding="0" border="0">
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<td>
</td>
<td>
<p>
</td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="f0962a8d37d7a17d8aff75c9409bf72f"></a><!-- doxytag: member="ost::XMLStream::characters" ref="f0962a8d37d7a17d8aff75c9409bf72f" args="(const unsigned char *text, size_t len)=0" --><p>
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<td class="md" nowrap valign="top">virtual void ost::XMLStream::characters </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const unsigned char * </td>
<td class="mdname" nowrap> <em>text</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>size_t </td>
<td class="mdname" nowrap> <em>len</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [pure virtual]</code></td>
</tr>
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</td>
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<table cellspacing="5" cellpadding="0" border="0">
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<td>
</td>
<td>
<p>
Virtual to receive character text extracted from the document in the current element.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>text</em> </td><td>received. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>len</em> </td><td>length of text received. </td></tr>
</table>
</dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="xmlfetch_8cpp-example.html#a101">xmlfetch.cpp</a>.</dl> </td>
</tr>
</table>
<a class="anchor" name="5a581fb0b2875b0714a893837e2e5d11"></a><!-- doxytag: member="ost::XMLStream::close" ref="5a581fb0b2875b0714a893837e2e5d11" args="(void)" --><p>
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<td class="md" nowrap valign="top">virtual void ost::XMLStream::close </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
May perform a close operation of an i/o source when the parser has completed operation.
<p>
</td>
</tr>
</table>
<a class="anchor" name="d0dce01d08f35d642960867c0f5ccfbd"></a><!-- doxytag: member="ost::XMLStream::comment" ref="d0dce01d08f35d642960867c0f5ccfbd" args="(const unsigned char *text, size_t len)" --><p>
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<td class="md" nowrap valign="top">virtual void ost::XMLStream::comment </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const unsigned char * </td>
<td class="mdname" nowrap> <em>text</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>size_t </td>
<td class="mdname" nowrap> <em>len</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Virtual to receive embedded comments in an XML document being parsed.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>text</em> </td><td>text comment extracted. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>len</em> </td><td>length of comment. </td></tr>
</table>
</dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="xmlfetch_8cpp-example.html#a102">xmlfetch.cpp</a>.</dl> </td>
</tr>
</table>
<a class="anchor" name="bc1e0f16c8100aadfde6acec56c2029e"></a><!-- doxytag: member="ost::XMLStream::endDocument" ref="bc1e0f16c8100aadfde6acec56c2029e" args="(void)" --><p>
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<td class="md" nowrap valign="top">virtual void ost::XMLStream::endDocument </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Identify end of document event.
<p>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="xmlfetch_8cpp-example.html#a100">xmlfetch.cpp</a>.</dl> </td>
</tr>
</table>
<a class="anchor" name="74d63a5adf80d81d61888aad632f2b7d"></a><!-- doxytag: member="ost::XMLStream::endElement" ref="74d63a5adf80d81d61888aad632f2b7d" args="(const unsigned char *name)=0" --><p>
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<td class="md" nowrap valign="top">virtual void ost::XMLStream::endElement </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const unsigned char * </td>
<td class="mdname1" valign="top" nowrap> <em>name</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Identify end of an element in the document.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>name</em> </td><td>of element found. </td></tr>
</table>
</dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="xmlfetch_8cpp-example.html#a104">xmlfetch.cpp</a>.</dl> </td>
</tr>
</table>
<a class="anchor" name="1981d1aa643f5aad965693c7a4132502"></a><!-- doxytag: member="ost::XMLStream::getLogging" ref="1981d1aa643f5aad965693c7a4132502" args="(void)" --><p>
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<td class="md" nowrap valign="top">virtual <a class="el" href="classost_1_1_slog.html#f139df7abeea150282dbbb29b4c24cee">Slog::Level</a> ost::XMLStream::getLogging </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Get error logging level.
<p>
<dl compact><dt><b>Returns:</b></dt><dd>error logging level. </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="499e60e5b1b0e88d2f856e4bc8c63db8"></a><!-- doxytag: member="ost::XMLStream::open" ref="499e60e5b1b0e88d2f856e4bc8c63db8" args="(const char *resource)" --><p>
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<td class="md" nowrap valign="top">virtual bool ost::XMLStream::open </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const char * </td>
<td class="mdname1" valign="top" nowrap> <em>resource</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
May perform an open operation on behalf of a parsed resource.
<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 compact><dt><b>Returns:</b></dt><dd>true if open is successful. </dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>resource</em> </td><td>passed to Parse methods. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="98568a87c3d747583f8851f6d3f9fb1d"></a><!-- doxytag: member="ost::XMLStream::parse" ref="98568a87c3d747583f8851f6d3f9fb1d" args="(const char *resource=NULL)" --><p>
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<td class="md" nowrap valign="top">bool ost::XMLStream::parse </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const char * </td>
<td class="mdname1" valign="top" nowrap> <em>resource</em> = <code>NULL</code> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Parse a resource as a stream thru the virtual read method.
<p>
<dl compact><dt><b>Returns:</b></dt><dd>true if well formed document has been fully parsed. </dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>resource</em> </td><td>optional name of resource. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="64e401b6b98c28523719d021f11acd52"></a><!-- doxytag: member="ost::XMLStream::read" ref="64e401b6b98c28523719d021f11acd52" args="(unsigned char *buffer, size_t len)=0" --><p>
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<td class="md" nowrap valign="top">virtual int ost::XMLStream::read </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">unsigned char * </td>
<td class="mdname" nowrap> <em>buffer</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>size_t </td>
<td class="mdname" nowrap> <em>len</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Read method to aquire data for the parser.
<p>
<dl compact><dt><b>Returns:</b></dt><dd>number of bytes actually read. </dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>buffer</em> </td><td>to read data into. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>len</em> </td><td>number of bytes to read. </td></tr>
</table>
</dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="xmlfetch_8cpp-example.html#a98">xmlfetch.cpp</a>.</dl> </td>
</tr>
</table>
<a class="anchor" name="4a4305dffd6b1eb7cdb6afd373fec8ef"></a><!-- doxytag: member="ost::XMLStream::startDocument" ref="4a4305dffd6b1eb7cdb6afd373fec8ef" args="(void)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual void ost::XMLStream::startDocument </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Identify start of document event.
<p>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="xmlfetch_8cpp-example.html#a99">xmlfetch.cpp</a>.</dl> </td>
</tr>
</table>
<a class="anchor" name="a2ccb9652149b6e461902c102b8ccde6"></a><!-- doxytag: member="ost::XMLStream::startElement" ref="a2ccb9652149b6e461902c102b8ccde6" args="(const unsigned char *name, const unsigned char **attr)=0" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual void ost::XMLStream::startElement </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const unsigned char * </td>
<td class="mdname" nowrap> <em>name</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>const unsigned char ** </td>
<td class="mdname" nowrap> <em>attr</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Identify start of an element in the document.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>name</em> </td><td>of element found. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>attr</em> </td><td>list of attributes extracted. </td></tr>
</table>
</dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="xmlfetch_8cpp-example.html#a103">xmlfetch.cpp</a>.</dl> </td>
</tr>
</table>
<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></ul>
<hr size="1"><address style="align: right;"><small>Generated on Mon Jun 19 10:50:58 2006 for GNU CommonC++ by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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