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<h1>ucc::fbuf Class Reference</h1><!-- doxytag: class="ucc::fbuf" --><!-- doxytag: inherits="ucc::IOBuffer,ucc::fsys" -->
<p>A generic file streaming class built from the I/O buffer.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="a00189_source.html">buffer.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for ucc::fbuf:</div>
<div class="dynsection">
<div class="center"><img src="a00393.png" border="0" usemap="#ucc_1_1fbuf_inherit__map" alt="Inheritance graph"/></div>
<map name="ucc_1_1fbuf_inherit__map" id="ucc_1_1fbuf_inherit__map">
<area shape="rect" id="node2" href="a00057.html" title="Common buffered I/O class." alt="" coords="5,5,107,35"/><area shape="rect" id="node4" href="a00056.html" title="A container for generic and o/s portable threadsafe file system functions." alt="" coords="131,5,208,35"/></map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<div class="dynheader">
Collaboration diagram for ucc::fbuf:</div>
<div class="dynsection">
<div class="center"><img src="a00394.png" border="0" usemap="#ucc_1_1fbuf_coll__map" alt="Collaboration graph"/></div>
<map name="ucc_1_1fbuf_coll__map" id="ucc_1_1fbuf_coll__map">
<area shape="rect" id="node2" href="a00057.html" title="Common buffered I/O class." alt="" coords="5,5,107,35"/><area shape="rect" id="node4" href="a00056.html" title="A container for generic and o/s portable threadsafe file system functions." alt="" coords="131,5,208,35"/></map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a73f692afc01ef8eb11ad13e04ba00302"></a><!-- doxytag: member="ucc::fbuf::close" ref="a73f692afc01ef8eb11ad13e04ba00302" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#a73f692afc01ef8eb11ad13e04ba00302">close</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Close the file, flush buffers. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#aaff0843a4f0883c07d48509172c1d2d9">create</a> (const char *path, <a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> access=fsys::ACCESS_APPEND, unsigned permissions=0640, size_t size=512)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create and open the specified file. <a href="#aaff0843a4f0883c07d48509172c1d2d9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#a3db10b790956a1196367f9a6c5e14947">fbuf</a> (const char *path, <a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> access, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Construct a file buffer that opens an existing file. <a href="#a3db10b790956a1196367f9a6c5e14947"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#a2832b4dc3ad1c0a5ead3e4d0ffe06642">fbuf</a> (const char *path, <a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> access, unsigned permissions, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Construct a file buffer that creates and opens a specific file. <a href="#a2832b4dc3ad1c0a5ead3e4d0ffe06642"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="acba071f964888390400cf0aedf58949b"></a><!-- doxytag: member="ucc::fbuf::fbuf" ref="acba071f964888390400cf0aedf58949b" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#acba071f964888390400cf0aedf58949b">fbuf</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Construct an unopened file buffer. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#a079696d95987700062e332333a459147">open</a> (const char *path, <a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> access=fsys::ACCESS_RDWR, size_t size=512)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Construct a file buffer that opens an existing file. <a href="#a079696d95987700062e332333a459147"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#affe16ef4d154e6b4de1203cbf6f6a300">seek</a> (<a class="el" href="a00056.html#acd8d82ddbf77b2c44371f3bf19746f60">offset_t</a> offset)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Seek specific offset in open file and reset I/O buffers. <a href="#affe16ef4d154e6b4de1203cbf6f6a300"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00056.html#acd8d82ddbf77b2c44371f3bf19746f60">offset_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#abc4559a73cb9e1ccf011cc58a8107dd1">tell</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Give the current position in the currently open file. <a href="#abc4559a73cb9e1ccf011cc58a8107dd1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#a1d548d9babb9c5494018ff0f01c10505">trunc</a> (<a class="el" href="a00056.html#acd8d82ddbf77b2c44371f3bf19746f60">offset_t</a> offset)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Truncate the currently open file to a specific position. <a href="#a1d548d9babb9c5494018ff0f01c10505"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0ebe270e40bc52acb625b2c3173f4527"></a><!-- doxytag: member="ucc::fbuf::~fbuf" ref="a0ebe270e40bc52acb625b2c3173f4527" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#a0ebe270e40bc52acb625b2c3173f4527">~fbuf</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destroy object and release all resources. <br/></td></tr>
<tr><td colspan="2"><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#ada6eeafad94f859fea178e502935af8f">_pull</a> (char *address, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Method to pull buffer from physical i/o (read). <a href="#ada6eeafad94f859fea178e502935af8f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a00054.html#a6633944cf18140194347af2c0c342ca5">_push</a> (const char *address, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Method to push buffer into physical i/o (write). <a href="#a6633944cf18140194347af2c0c342ca5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab4b8cf4d4be27160649b059b124a9634"></a><!-- doxytag: member="ucc::fbuf::getfile" ref="ab4b8cf4d4be27160649b059b124a9634" args="(void)" -->
fd_t </td><td class="memItemRight" valign="bottom"><b>getfile</b> (void)</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>A generic file streaming class built from the I/O buffer. </p>
<p>This can be used in place of fopen based file operations and does not require libstdc++. </p>
<dl class="author"><dt><b>Author:</b></dt><dd>David Sugar <<a href="mailto:dyfet@gnutelephony.org">dyfet@gnutelephony.org</a>> </dd></dl>
<p>Definition at line <a class="el" href="a00189_source.html#l00374">374</a> of file <a class="el" href="a00189_source.html">buffer.h</a>.</p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a2832b4dc3ad1c0a5ead3e4d0ffe06642"></a><!-- doxytag: member="ucc::fbuf::fbuf" ref="a2832b4dc3ad1c0a5ead3e4d0ffe06642" args="(const char *path, fsys::access_t access, unsigned permissions, size_t size)" -->
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<td class="memname">ucc::fbuf::fbuf </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>path</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> </td>
<td class="paramname"> <em>access</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned </td>
<td class="paramname"> <em>permissions</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Construct a file buffer that creates and opens a specific file. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>path</em> </td><td>of file to create. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>access</em> </td><td>mode of file (rw, rdonly, etc). </td></tr>
<tr><td valign="top"></td><td valign="top"><em>permissions</em> </td><td>of the newly created file. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>of the stream buffer. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a3db10b790956a1196367f9a6c5e14947"></a><!-- doxytag: member="ucc::fbuf::fbuf" ref="a3db10b790956a1196367f9a6c5e14947" args="(const char *path, fsys::access_t access, size_t size)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname">ucc::fbuf::fbuf </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>path</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> </td>
<td class="paramname"> <em>access</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Construct a file buffer that opens an existing file. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>path</em> </td><td>of existing file to open. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>access</em> </td><td>mode of file (rw, rdonly, etc). </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>of the stream buffer. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ada6eeafad94f859fea178e502935af8f"></a><!-- doxytag: member="ucc::fbuf::_pull" ref="ada6eeafad94f859fea178e502935af8f" args="(char *address, size_t size)" -->
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<td class="memname">size_t ucc::fbuf::_pull </td>
<td>(</td>
<td class="paramtype">char * </td>
<td class="paramname"> <em>address</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [protected, virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Method to pull buffer from physical i/o (read). </p>
<p>The address is passed to this virtual since it is hidden as private. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>address</em> </td><td>of buffer to pull data into. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>of buffer area being pulled.. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>number of read written, 0 on error or end of data. </dd></dl>
<p>Reimplemented from <a class="el" href="a00057.html#ad6089d06f36137661b2f0c37943a4187">ucc::IOBuffer</a>.</p>
</div>
</div>
<a class="anchor" id="a6633944cf18140194347af2c0c342ca5"></a><!-- doxytag: member="ucc::fbuf::_push" ref="a6633944cf18140194347af2c0c342ca5" args="(const char *address, size_t size)" -->
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<td class="memname">size_t ucc::fbuf::_push </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>address</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [protected, virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Method to push buffer into physical i/o (write). </p>
<p>The address is passed to this virtual since it is hidden as private. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>address</em> </td><td>of data to push. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>of data to push. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>number of bytes written, 0 on error. </dd></dl>
<p>Reimplemented from <a class="el" href="a00057.html#abe10b39c40a9cc0ba70b9e025dec072a">ucc::IOBuffer</a>.</p>
</div>
</div>
<a class="anchor" id="aaff0843a4f0883c07d48509172c1d2d9"></a><!-- doxytag: member="ucc::fbuf::create" ref="aaff0843a4f0883c07d48509172c1d2d9" args="(const char *path, fsys::access_t access=fsys::ACCESS_APPEND, unsigned permissions=0640, size_t size=512)" -->
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<td class="memname">void ucc::fbuf::create </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>path</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> </td>
<td class="paramname"> <em>access</em> = <code>fsys::ACCESS_APPEND</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned </td>
<td class="paramname"> <em>permissions</em> = <code>0640</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em> = <code>512</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Create and open the specified file. </p>
<p>If a file is currently open, it is closed first. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>path</em> </td><td>of file to create. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>access</em> </td><td>mode of file (rw, rdonly, etc). </td></tr>
<tr><td valign="top"></td><td valign="top"><em>permissions</em> </td><td>of the newly created file. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>of the stream buffer. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a079696d95987700062e332333a459147"></a><!-- doxytag: member="ucc::fbuf::open" ref="a079696d95987700062e332333a459147" args="(const char *path, fsys::access_t access=fsys::ACCESS_RDWR, size_t size=512)" -->
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<td class="memname">void ucc::fbuf::open </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>path</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00056.html#a5e886a4f005b2a2948d2a3fb4e9f0deb">fsys::access_t</a> </td>
<td class="paramname"> <em>access</em> = <code>fsys::ACCESS_RDWR</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em> = <code>512</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Construct a file buffer that opens an existing file. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>path</em> </td><td>of existing file to open. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>access</em> </td><td>mode of file (rw, rdonly, etc). </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>of the stream buffer. </td></tr>
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<a class="anchor" id="affe16ef4d154e6b4de1203cbf6f6a300"></a><!-- doxytag: member="ucc::fbuf::seek" ref="affe16ef4d154e6b4de1203cbf6f6a300" args="(offset_t offset)" -->
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<td class="memname">bool ucc::fbuf::seek </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00056.html#acd8d82ddbf77b2c44371f3bf19746f60">offset_t</a> </td>
<td class="paramname"> <em>offset</em></td>
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<p>Seek specific offset in open file and reset I/O buffers. </p>
<p>If the file is opened for both read and write, both the read and write position will be reset. </p>
<dl><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>offset</em> </td><td>to seek. </td></tr>
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</dd>
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<dl class="return"><dt><b>Returns:</b></dt><dd>true if successful. </dd></dl>
<p>Reimplemented from <a class="el" href="a00056.html#a7625032c1759131bd42309491bc32bab">ucc::fsys</a>.</p>
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<a class="anchor" id="abc4559a73cb9e1ccf011cc58a8107dd1"></a><!-- doxytag: member="ucc::fbuf::tell" ref="abc4559a73cb9e1ccf011cc58a8107dd1" args="(void)" -->
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<td class="memname"><a class="el" href="a00056.html#acd8d82ddbf77b2c44371f3bf19746f60">offset_t</a> ucc::fbuf::tell </td>
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<p>Give the current position in the currently open file. </p>
<p>If we are appending, this is alwayus seek::end. If we have a file opened for both read and write, this gives the read offset. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>file offset of current i/o operations. </dd></dl>
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<a class="anchor" id="a1d548d9babb9c5494018ff0f01c10505"></a><!-- doxytag: member="ucc::fbuf::trunc" ref="a1d548d9babb9c5494018ff0f01c10505" args="(offset_t offset)" -->
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<td class="memname">bool ucc::fbuf::trunc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00056.html#acd8d82ddbf77b2c44371f3bf19746f60">offset_t</a> </td>
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<p>Truncate the currently open file to a specific position. </p>
<p>All I/O buffers are reset and the file pointer is set to the end. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>offset</em> </td><td>to truncate. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if successful. </dd></dl>
<p>Reimplemented from <a class="el" href="a00056.html#a238fa44a3eb9c6f37f0ceede3f0234a4">ucc::fsys</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>ucommon/<a class="el" href="a00189_source.html">buffer.h</a></li>
</ul>
</div>
<hr class="footer"/><address style="text-align: right;"><small>Generated on Tue Jul 6 08:22:29 2010 for UCommon by
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