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  <div class="navpath"><a class="el" href="namespaceExiv2.html">Exiv2</a>::<a class="el" href="namespaceExiv2_1_1Internal.html">Internal</a>::<a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html">TiffReader</a>
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<h1>Exiv2::Internal::TiffReader Class Reference</h1><!-- doxytag: class="Exiv2::Internal::TiffReader" --><!-- doxytag: inherits="Exiv2::Internal::TiffVisitor" -->TIFF composite visitor to read the TIFF structure from a block of memory and build the composite from it (Visitor pattern). Used by <a class="el" href="classExiv2_1_1TiffParser.html" title="Stateless parser class for data in TIFF format. Images use this class to decode and...">TiffParser</a> to read the TIFF data from a block of memory.  
<a href="#_details">More...</a>
<p>
<code>#include &lt;tiffvisitor_int.hpp&gt;</code>
<p>
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Inheritance diagram for Exiv2::Internal::TiffReader:</div>
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<p><center><img src="classExiv2_1_1Internal_1_1TiffReader__inherit__graph.png" border="0" usemap="#Exiv2_1_1Internal_1_1TiffReader__inherit__map" alt="Inheritance graph"></center>
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Collaboration diagram for Exiv2::Internal::TiffReader:</div>
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<p><center><img src="classExiv2_1_1Internal_1_1TiffReader__coll__graph.png" border="0" usemap="#Exiv2_1_1Internal_1_1TiffReader__coll__map" alt="Collaboration graph"></center>
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<area shape="rect" id="node2" href="classExiv2_1_1Internal_1_1TiffVisitor.html" title="Abstract base class defining the interface for TIFF composite vistors (Visitor pattern)..." alt="" coords="695,5,996,32"><area shape="rect" id="node6" title="STL class." alt="" coords="173,81,355,108"><area shape="rect" id="node15" href="classExiv2_1_1Internal_1_1TiffRwState.html" title="Simple state class containing relevant state information for the TIFF reader. This..." alt="" coords="695,161,996,188"><area shape="rect" id="node17" href="classExiv2_1_1Internal_1_1TiffComponent.html" title="Interface class for components of a TIFF directory hierarchy (Composite pattern)..." alt="" coords="685,212,1005,239"></map>
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<p>
<a href="classExiv2_1_1Internal_1_1TiffReader-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 colspan="2"><div class="groupHeader">Creators</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#9a5ad34241890c82ac4c0de005974266">TiffReader</a> (const <a class="el" href="namespaceExiv2.html#16f60a5bd4207fe155f6cf93a15efa72">byte</a> *pData, uint32_t size, <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html">TiffComponent</a> *pRoot, <a class="el" href="classExiv2_1_1Internal_1_1TiffRwState.html#dc73896025dc849defe74e149cef4152">TiffRwState::AutoPtr</a> state)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Constructor. The data buffer and table describing the TIFF structure of the data are set in the constructor.  <a href="#9a5ad34241890c82ac4c0de005974266"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="fe310dab5d3b058dce65377aaa667823"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::~TiffReader" ref="fe310dab5d3b058dce65377aaa667823" args="()" -->
virtual&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#fe310dab5d3b058dce65377aaa667823">~TiffReader</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Virtual destructor. <br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Manipulators</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="80670aea5ec5db38681485f30ac8b7f8"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitEntry" ref="80670aea5ec5db38681485f30ac8b7f8" args="(TiffEntry *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#80670aea5ec5db38681485f30ac8b7f8">visitEntry</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffEntry.html">TiffEntry</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a TIFF entry from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="7c5f0d9d0a26f278e666c9aabb60a3c8"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitDataEntry" ref="7c5f0d9d0a26f278e666c9aabb60a3c8" args="(TiffDataEntry *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#7c5f0d9d0a26f278e666c9aabb60a3c8">visitDataEntry</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffDataEntry.html">TiffDataEntry</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a TIFF data entry from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6d0240aa0b096296a3c3575acd971f4b"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitImageEntry" ref="6d0240aa0b096296a3c3575acd971f4b" args="(TiffImageEntry *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#6d0240aa0b096296a3c3575acd971f4b">visitImageEntry</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffImageEntry.html">TiffImageEntry</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a TIFF image entry from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="502c535ff222883b4f479950a1132658"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitSizeEntry" ref="502c535ff222883b4f479950a1132658" args="(TiffSizeEntry *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#502c535ff222883b4f479950a1132658">visitSizeEntry</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffSizeEntry.html">TiffSizeEntry</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a TIFF size entry from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ac2ca4bab27246a480069bd0491f9350"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitDirectory" ref="ac2ca4bab27246a480069bd0491f9350" args="(TiffDirectory *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#ac2ca4bab27246a480069bd0491f9350">visitDirectory</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffDirectory.html">TiffDirectory</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a TIFF directory from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ec83f2d101e7ecc4f8ae00f1c3debfab"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitSubIfd" ref="ec83f2d101e7ecc4f8ae00f1c3debfab" args="(TiffSubIfd *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#ec83f2d101e7ecc4f8ae00f1c3debfab">visitSubIfd</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html">TiffSubIfd</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a TIFF sub-IFD from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="7efdcfe00dcaa4a51cbb8aae1481ee6e"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitMnEntry" ref="7efdcfe00dcaa4a51cbb8aae1481ee6e" args="(TiffMnEntry *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#7efdcfe00dcaa4a51cbb8aae1481ee6e">visitMnEntry</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffMnEntry.html">TiffMnEntry</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a TIFF makernote entry from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="40b3907cebcb7a3bfcb93b1d50730015"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitIfdMakernote" ref="40b3907cebcb7a3bfcb93b1d50730015" args="(TiffIfdMakernote *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#40b3907cebcb7a3bfcb93b1d50730015">visitIfdMakernote</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffIfdMakernote.html">TiffIfdMakernote</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read an IFD makernote from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="7c9603364b1ebdf39c8c8e5ec2f33c9d"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitIfdMakernoteEnd" ref="7c9603364b1ebdf39c8c8e5ec2f33c9d" args="(TiffIfdMakernote *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#7c9603364b1ebdf39c8c8e5ec2f33c9d">visitIfdMakernoteEnd</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffIfdMakernote.html">TiffIfdMakernote</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Reset reader to its original state, undo makernote specific settings. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="24b355097515cde0ff8c2b2926933729"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitArrayEntry" ref="24b355097515cde0ff8c2b2926933729" args="(TiffArrayEntry *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#24b355097515cde0ff8c2b2926933729">visitArrayEntry</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffArrayEntry.html">TiffArrayEntry</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read an array entry component from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d7c4173afbda7612671f35c396ffc2a4"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::visitArrayElement" ref="d7c4173afbda7612671f35c396ffc2a4" args="(TiffArrayElement *object)" -->
virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#d7c4173afbda7612671f35c396ffc2a4">visitArrayElement</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffArrayElement.html">TiffArrayElement</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read an array element from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="69624656368e5905c64e70b6d46b278d"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::readTiffEntry" ref="69624656368e5905c64e70b6d46b278d" args="(TiffEntryBase *object)" -->
void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#69624656368e5905c64e70b6d46b278d">readTiffEntry</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffEntryBase.html">TiffEntryBase</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a standard TIFF entry from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="22414a0e61d0f5d7c130dbb3b10fe961"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::readDataEntryBase" ref="22414a0e61d0f5d7c130dbb3b10fe961" args="(TiffDataEntryBase *object)" -->
void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#22414a0e61d0f5d7c130dbb3b10fe961">readDataEntryBase</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffDataEntryBase.html">TiffDataEntryBase</a> *object)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a <a class="el" href="classExiv2_1_1Internal_1_1TiffDataEntryBase.html" title="Interface for a standard TIFF IFD entry consisting of a value which is a set of offsets...">TiffDataEntryBase</a> from the data buffer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f6430db9d15a1bce4273e22c892d3779"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::changeState" ref="f6430db9d15a1bce4273e22c892d3779" args="(TiffRwState::AutoPtr state)" -->
void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#f6430db9d15a1bce4273e22c892d3779">changeState</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffRwState.html#dc73896025dc849defe74e149cef4152">TiffRwState::AutoPtr</a> state)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Set the <em>state</em> class. Assumes ownership of the object passed in. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a0cfdf439fcd92adce61c16a1664ea40"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::resetState" ref="a0cfdf439fcd92adce61c16a1664ea40" args="()" -->
void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#a0cfdf439fcd92adce61c16a1664ea40">resetState</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Reset the state to the original state as set in the constructor. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5975c2739d211fafedb5773238b1f66f"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::circularReference" ref="5975c2739d211fafedb5773238b1f66f" args="(const byte *start, uint16_t group)" -->
bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#5975c2739d211fafedb5773238b1f66f">circularReference</a> (const <a class="el" href="namespaceExiv2.html#16f60a5bd4207fe155f6cf93a15efa72">byte</a> *start, uint16_t group)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Check IFD directory pointer <em>start</em> for circular reference. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="92e426223a0fe230e025fe1ca769d420"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::nextIdx" ref="92e426223a0fe230e025fe1ca769d420" args="(uint16_t group)" -->
int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#92e426223a0fe230e025fe1ca769d420">nextIdx</a> (uint16_t group)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the next idx sequence number for <em>group</em>. <br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ab9f4c2b0dda826148fc3d8c2265c0b0"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::byteOrder" ref="ab9f4c2b0dda826148fc3d8c2265c0b0" args="() const " -->
<a class="el" href="namespaceExiv2.html#94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#ab9f4c2b0dda826148fc3d8c2265c0b0">byteOrder</a> () const </td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the byte order. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="265a8a2954a23a8771bad59428b16e0c"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::baseOffset" ref="265a8a2954a23a8771bad59428b16e0c" args="() const " -->
uint32_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffReader.html#265a8a2954a23a8771bad59428b16e0c">baseOffset</a> () const </td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the base offset. See class <a class="el" href="classExiv2_1_1Internal_1_1TiffRwState.html" title="Simple state class containing relevant state information for the TIFF reader. This...">TiffRwState</a> for details. <br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
TIFF composite visitor to read the TIFF structure from a block of memory and build the composite from it (Visitor pattern). Used by <a class="el" href="classExiv2_1_1TiffParser.html" title="Stateless parser class for data in TIFF format. Images use this class to decode and...">TiffParser</a> to read the TIFF data from a block of memory. <hr><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" name="9a5ad34241890c82ac4c0de005974266"></a><!-- doxytag: member="Exiv2::Internal::TiffReader::TiffReader" ref="9a5ad34241890c82ac4c0de005974266" args="(const byte *pData, uint32_t size, TiffComponent *pRoot, TiffRwState::AutoPtr state)" -->
<div class="memitem">
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          <td class="memname">Exiv2::Internal::TiffReader::TiffReader           </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="namespaceExiv2.html#16f60a5bd4207fe155f6cf93a15efa72">byte</a> *&nbsp;</td>
          <td class="paramname"> <em>pData</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint32_t&nbsp;</td>
          <td class="paramname"> <em>size</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html">TiffComponent</a> *&nbsp;</td>
          <td class="paramname"> <em>pRoot</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="classExiv2_1_1Internal_1_1TiffRwState.html#dc73896025dc849defe74e149cef4152">TiffRwState::AutoPtr</a>&nbsp;</td>
          <td class="paramname"> <em>state</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
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<div class="memdoc">

<p>
Constructor. The data buffer and table describing the TIFF structure of the data are set in the constructor. 
<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>pData</em>&nbsp;</td><td>Pointer to the data buffer, starting with a TIFF header. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>size</em>&nbsp;</td><td>Number of bytes in the data buffer. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pRoot</em>&nbsp;</td><td>Root element of the TIFF composite. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>state</em>&nbsp;</td><td>State object for creation function, byte order and base offset. </td></tr>
  </table>
</dl>

</div>
</div><p>
<hr>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="tiffvisitor__int_8hpp.html">tiffvisitor_int.hpp</a><li>tiffvisitor.cpp</ul>
</div>
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.9 </small></address>
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