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<li class="navelem"><a class="el" href="namespaceExiv2.html">Exiv2</a></li><li class="navelem"><a class="el" href="classExiv2_1_1StringValueBase.html">StringValueBase</a></li>  </ul>
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<div class="title">Exiv2::StringValueBase Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div>  </div>
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<p>Abstract base class for a string based Value type.  
 <a href="classExiv2_1_1StringValueBase.html#details">More...</a></p>

<p><code>#include &lt;value.hpp&gt;</code></p>
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  <img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for Exiv2::StringValueBase:</div>
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  <img id="dynsection-1-trigger" src="closed.png" alt="+"/> Collaboration diagram for Exiv2::StringValueBase:</div>
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<area shape="rect" id="node2" href="classExiv2_1_1Value.html" title="Common interface for all types of values used with metadata. " alt="" coords="5,96,148,123"/><area shape="rect" id="node3" title="STL class. " alt="" coords="172,96,304,123"/><area shape="rect" id="node4" title="STL class. " alt="" coords="137,5,339,47"/></map>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a690234b43e80adc70a6c7ee5106e5326"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a690234b43e80adc70a6c7ee5106e5326"></a>
typedef std::auto_ptr<br class="typebreak" />
&lt; <a class="el" href="classExiv2_1_1StringValueBase.html">StringValueBase</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a690234b43e80adc70a6c7ee5106e5326">AutoPtr</a></td></tr>
<tr class="memdesc:a690234b43e80adc70a6c7ee5106e5326"><td class="mdescLeft">&#160;</td><td class="mdescRight">Shortcut for a StringValueBase auto pointer. <br /></td></tr>
<tr class="separator:a690234b43e80adc70a6c7ee5106e5326"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_types_classExiv2_1_1Value"><td colspan="2" onclick="javascript:toggleInherit('pub_types_classExiv2_1_1Value')"><img src="closed.png" alt="-"/>&#160;Public Types inherited from <a class="el" href="classExiv2_1_1Value.html">Exiv2::Value</a></td></tr>
<tr class="memitem:a0f62e585b82c97738858b743e60dff21 inherit pub_types_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0f62e585b82c97738858b743e60dff21"></a>
typedef std::auto_ptr&lt; <a class="el" href="classExiv2_1_1Value.html">Value</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a0f62e585b82c97738858b743e60dff21">AutoPtr</a></td></tr>
<tr class="memdesc:a0f62e585b82c97738858b743e60dff21 inherit pub_types_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Shortcut for a Value auto pointer. <br /></td></tr>
<tr class="separator:a0f62e585b82c97738858b743e60dff21 inherit pub_types_classExiv2_1_1Value"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Creators</div></td></tr>
<tr class="memitem:a5787c8e04b3cec1870b3abd95d15ea6b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a5787c8e04b3cec1870b3abd95d15ea6b"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a5787c8e04b3cec1870b3abd95d15ea6b">StringValueBase</a> (<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a> <a class="el" href="classExiv2_1_1Value.html#a1a56299aad4e614c4f0225d97530c038">typeId</a>)</td></tr>
<tr class="memdesc:a5787c8e04b3cec1870b3abd95d15ea6b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor for subclasses. <br /></td></tr>
<tr class="separator:a5787c8e04b3cec1870b3abd95d15ea6b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a837785dfc0f3561c939c2a9b4224ceb0"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a837785dfc0f3561c939c2a9b4224ceb0"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a837785dfc0f3561c939c2a9b4224ceb0">StringValueBase</a> (<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a> <a class="el" href="classExiv2_1_1Value.html#a1a56299aad4e614c4f0225d97530c038">typeId</a>, const std::string &amp;buf)</td></tr>
<tr class="memdesc:a837785dfc0f3561c939c2a9b4224ceb0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor for subclasses. <br /></td></tr>
<tr class="separator:a837785dfc0f3561c939c2a9b4224ceb0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:adba0f1f9e5ca8e2873d0b2815786f99e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="adba0f1f9e5ca8e2873d0b2815786f99e"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#adba0f1f9e5ca8e2873d0b2815786f99e">StringValueBase</a> (const <a class="el" href="classExiv2_1_1StringValueBase.html">StringValueBase</a> &amp;rhs)</td></tr>
<tr class="memdesc:adba0f1f9e5ca8e2873d0b2815786f99e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor. <br /></td></tr>
<tr class="separator:adba0f1f9e5ca8e2873d0b2815786f99e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8cb9d50601175eed2ee81a5d5395be02"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8cb9d50601175eed2ee81a5d5395be02"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a8cb9d50601175eed2ee81a5d5395be02">~StringValueBase</a> ()</td></tr>
<tr class="memdesc:a8cb9d50601175eed2ee81a5d5395be02"><td class="mdescLeft">&#160;</td><td class="mdescRight">Virtual destructor. <br /></td></tr>
<tr class="separator:a8cb9d50601175eed2ee81a5d5395be02"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr><td colspan="2"><div class="groupHeader">Manipulators</div></td></tr>
<tr class="memitem:a7e1a2e4e99a63eb1ef815317f012c57b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a7e1a2e4e99a63eb1ef815317f012c57b"></a>
virtual int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a7e1a2e4e99a63eb1ef815317f012c57b">read</a> (const std::string &amp;buf)</td></tr>
<tr class="memdesc:a7e1a2e4e99a63eb1ef815317f012c57b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Read the value from buf. This default implementation uses buf as it is. <br /></td></tr>
<tr class="separator:a7e1a2e4e99a63eb1ef815317f012c57b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab43f48f366770175d7a07ad229ebbd2d"><td class="memItemLeft" align="right" valign="top">virtual int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#ab43f48f366770175d7a07ad229ebbd2d">read</a> (const <a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> *buf, long len, <a class="el" href="namespaceExiv2.html#a94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a> byteOrder=invalidByteOrder)</td></tr>
<tr class="memdesc:ab43f48f366770175d7a07ad229ebbd2d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Read the value from a character buffer.  <a href="#ab43f48f366770175d7a07ad229ebbd2d">More...</a><br /></td></tr>
<tr class="separator:ab43f48f366770175d7a07ad229ebbd2d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<tr class="memitem:aa415b8fb5420125c8003870cb397f1b6"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa415b8fb5420125c8003870cb397f1b6"></a>
<a class="el" href="classExiv2_1_1Value.html#a0f62e585b82c97738858b743e60dff21">AutoPtr</a>&#160;</td><td class="memItemRight" valign="bottom"><b>clone</b> () const </td></tr>
<tr class="separator:aa415b8fb5420125c8003870cb397f1b6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a68503471612daaf314f4b70e2216ef3b"><td class="memItemLeft" align="right" valign="top">virtual long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a68503471612daaf314f4b70e2216ef3b">copy</a> (<a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> *buf, <a class="el" href="namespaceExiv2.html#a94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a> byteOrder=invalidByteOrder) const </td></tr>
<tr class="memdesc:a68503471612daaf314f4b70e2216ef3b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Write value to a character data buffer.  <a href="#a68503471612daaf314f4b70e2216ef3b">More...</a><br /></td></tr>
<tr class="separator:a68503471612daaf314f4b70e2216ef3b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad2b4138c3457bf9194c629051514db42"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ad2b4138c3457bf9194c629051514db42"></a>
virtual long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#ad2b4138c3457bf9194c629051514db42">count</a> () const </td></tr>
<tr class="memdesc:ad2b4138c3457bf9194c629051514db42"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the number of components of the value. <br /></td></tr>
<tr class="separator:ad2b4138c3457bf9194c629051514db42"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a893d78447a12cc30f1a2e5da2b1c9e7e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a893d78447a12cc30f1a2e5da2b1c9e7e"></a>
virtual long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a893d78447a12cc30f1a2e5da2b1c9e7e">size</a> () const </td></tr>
<tr class="memdesc:a893d78447a12cc30f1a2e5da2b1c9e7e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the size of the value in bytes. <br /></td></tr>
<tr class="separator:a893d78447a12cc30f1a2e5da2b1c9e7e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:adb3bb38ee2d2d5e51539317c44b5492e"><td class="memItemLeft" align="right" valign="top">virtual long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#adb3bb38ee2d2d5e51539317c44b5492e">toLong</a> (long n=0) const </td></tr>
<tr class="memdesc:adb3bb38ee2d2d5e51539317c44b5492e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Convert the <em>n</em>-th component of the value to a long. The behaviour of this method may be undefined if there is no <em>n</em>-th component.  <a href="#adb3bb38ee2d2d5e51539317c44b5492e">More...</a><br /></td></tr>
<tr class="separator:adb3bb38ee2d2d5e51539317c44b5492e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab414d7d6cfdf5bfa7b00884f6d7a20f5"><td class="memItemLeft" align="right" valign="top">virtual float&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#ab414d7d6cfdf5bfa7b00884f6d7a20f5">toFloat</a> (long n=0) const </td></tr>
<tr class="memdesc:ab414d7d6cfdf5bfa7b00884f6d7a20f5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Convert the <em>n</em>-th component of the value to a float. The behaviour of this method may be undefined if there is no <em>n</em>-th component.  <a href="#ab414d7d6cfdf5bfa7b00884f6d7a20f5">More...</a><br /></td></tr>
<tr class="separator:ab414d7d6cfdf5bfa7b00884f6d7a20f5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3899565eca4f0a0b590d2fde6a2c2023"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="namespaceExiv2.html#a95756f3f7fa19103f83addf5fa088a30">Rational</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a3899565eca4f0a0b590d2fde6a2c2023">toRational</a> (long n=0) const </td></tr>
<tr class="memdesc:a3899565eca4f0a0b590d2fde6a2c2023"><td class="mdescLeft">&#160;</td><td class="mdescRight">Convert the <em>n</em>-th component of the value to a Rational. The behaviour of this method may be undefined if there is no <em>n</em>-th component.  <a href="#a3899565eca4f0a0b590d2fde6a2c2023">More...</a><br /></td></tr>
<tr class="separator:a3899565eca4f0a0b590d2fde6a2c2023"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acd6e46c7dbd429b137494ef0329d7335"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="acd6e46c7dbd429b137494ef0329d7335"></a>
virtual std::ostream &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#acd6e46c7dbd429b137494ef0329d7335">write</a> (std::ostream &amp;os) const </td></tr>
<tr class="memdesc:acd6e46c7dbd429b137494ef0329d7335"><td class="mdescLeft">&#160;</td><td class="mdescRight">Write the value to an output stream. You do not usually have to use this function; it is used for the implementation of the output operator for Value, <a class="el" href="namespaceExiv2.html#abe882054db13fc2f4f6f7e8e1261d982" title="Output operator for Value types. ">operator&lt;&lt;(std::ostream &amp;os, const Value &amp;value)</a>. <br /></td></tr>
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<tr class="inherit_header pub_methods_classExiv2_1_1Value"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classExiv2_1_1Value')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classExiv2_1_1Value.html">Exiv2::Value</a></td></tr>
<tr class="memitem:ab475b1680c6fa36a092c4584f70a8027 inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab475b1680c6fa36a092c4584f70a8027"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#ab475b1680c6fa36a092c4584f70a8027">Value</a> (<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a> <a class="el" href="classExiv2_1_1Value.html#a1a56299aad4e614c4f0225d97530c038">typeId</a>)</td></tr>
<tr class="memdesc:ab475b1680c6fa36a092c4584f70a8027 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor, taking a type id to initialize the base class with. <br /></td></tr>
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<tr class="memitem:a22a8e3314aad989671aedeee1c7ef375 inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a22a8e3314aad989671aedeee1c7ef375"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a22a8e3314aad989671aedeee1c7ef375">~Value</a> ()</td></tr>
<tr class="memdesc:a22a8e3314aad989671aedeee1c7ef375 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Virtual destructor. <br /></td></tr>
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<tr class="memitem:a6e8f3c20bf5d09f34371660a6cf50af3 inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top">virtual int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a6e8f3c20bf5d09f34371660a6cf50af3">setDataArea</a> (const <a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> *buf, long len)</td></tr>
<tr class="memdesc:a6e8f3c20bf5d09f34371660a6cf50af3 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set the data area, if the value has one by copying (cloning) the buffer pointed to by buf.  <a href="#a6e8f3c20bf5d09f34371660a6cf50af3">More...</a><br /></td></tr>
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<tr class="memitem:a1a56299aad4e614c4f0225d97530c038 inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1a56299aad4e614c4f0225d97530c038"></a>
<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a1a56299aad4e614c4f0225d97530c038">typeId</a> () const </td></tr>
<tr class="memdesc:a1a56299aad4e614c4f0225d97530c038 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the type identifier (Exif data format type). <br /></td></tr>
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<tr class="memitem:a84db34d85bac0f5e159d67a1e10c7976 inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a84db34d85bac0f5e159d67a1e10c7976"></a>
<a class="el" href="classExiv2_1_1Value.html#a0f62e585b82c97738858b743e60dff21">AutoPtr</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a84db34d85bac0f5e159d67a1e10c7976">clone</a> () const </td></tr>
<tr class="memdesc:a84db34d85bac0f5e159d67a1e10c7976 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return an auto-pointer to a copy of itself (deep copy). The caller owns this copy and the auto-pointer ensures that it will be deleted. <br /></td></tr>
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std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a0b07106aa570a506f4211c7bfa605fb0">toString</a> () const </td></tr>
<tr class="memdesc:a0b07106aa570a506f4211c7bfa605fb0 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the value as a string. Implemented in terms of <a class="el" href="classExiv2_1_1Value.html#a2518f5ba09fc8c00785c57a119892c4c" title="Write the value to an output stream. You do not usually have to use this function; it is used for the...">write(std::ostream&amp; os) const </a>of the concrete class. <br /></td></tr>
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virtual std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a856b1a10a7081540484ce62e8f75e389">toString</a> (long n) const </td></tr>
<tr class="memdesc:a856b1a10a7081540484ce62e8f75e389 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the <em>n</em>-th component of the value as a string. The default implementation returns <a class="el" href="classExiv2_1_1Value.html#a0b07106aa570a506f4211c7bfa605fb0" title="Return the value as a string. Implemented in terms of write(std::ostream& os) const of the concrete c...">toString()</a>. The behaviour of this method may be undefined if there is no <em>n</em>-th component. <br /></td></tr>
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<tr class="memitem:a0105d81baf07d531cc6de2d2bb4a7bea inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0105d81baf07d531cc6de2d2bb4a7bea"></a>
virtual long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a0105d81baf07d531cc6de2d2bb4a7bea">sizeDataArea</a> () const </td></tr>
<tr class="memdesc:a0105d81baf07d531cc6de2d2bb4a7bea inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the size of the data area, 0 if there is none. <br /></td></tr>
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<tr class="memitem:a9d96b057ecc6e9f09e2c65b46a0688e0 inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classExiv2_1_1DataBuf.html">DataBuf</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a9d96b057ecc6e9f09e2c65b46a0688e0">dataArea</a> () const </td></tr>
<tr class="memdesc:a9d96b057ecc6e9f09e2c65b46a0688e0 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a copy of the data area if the value has one. The caller owns this copy and <a class="el" href="classExiv2_1_1DataBuf.html" title="Utility class containing a character array. All it does is to take care of memory allocation and dele...">DataBuf</a> ensures that it will be deleted.  <a href="#a9d96b057ecc6e9f09e2c65b46a0688e0">More...</a><br /></td></tr>
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<tr class="memitem:a161550b3ef31b3a14b1d75149ba9ba71 inherit pub_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a161550b3ef31b3a14b1d75149ba9ba71"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a161550b3ef31b3a14b1d75149ba9ba71">ok</a> () const </td></tr>
<tr class="memdesc:a161550b3ef31b3a14b1d75149ba9ba71 inherit pub_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check the <em>ok</em> status indicator. After a to&lt;Type&gt; conversion, this indicator shows whether the conversion was successful. <br /></td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr class="memitem:a64379351d8550e054f871067e4fecfb2"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a64379351d8550e054f871067e4fecfb2"></a>
std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a64379351d8550e054f871067e4fecfb2">value_</a></td></tr>
<tr class="memdesc:a64379351d8550e054f871067e4fecfb2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Stores the string value. <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:a63dbdd58d31e39e7803445931f18d701"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a63dbdd58d31e39e7803445931f18d701"></a>
<a class="el" href="classExiv2_1_1StringValueBase.html">StringValueBase</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#a63dbdd58d31e39e7803445931f18d701">operator=</a> (const <a class="el" href="classExiv2_1_1StringValueBase.html">StringValueBase</a> &amp;rhs)</td></tr>
<tr class="memdesc:a63dbdd58d31e39e7803445931f18d701"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assignment operator. <br /></td></tr>
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virtual <a class="el" href="classExiv2_1_1StringValueBase.html">StringValueBase</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1StringValueBase.html#abcaab81321b73e00ae6062e0dee93e81">clone_</a> () const =0</td></tr>
<tr class="memdesc:abcaab81321b73e00ae6062e0dee93e81"><td class="mdescLeft">&#160;</td><td class="mdescRight"><a class="el" href="namespaceExiv2_1_1Internal.html" title="Contains internal objects which are not published and are not part of the libexiv2 API...">Internal</a> virtual copy constructor. <br /></td></tr>
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<tr class="inherit_header pro_methods_classExiv2_1_1Value"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_classExiv2_1_1Value')"><img src="closed.png" alt="-"/>&#160;Protected Member Functions inherited from <a class="el" href="classExiv2_1_1Value.html">Exiv2::Value</a></td></tr>
<tr class="memitem:aa2a9041cbd30d86260820b818cdf232e inherit pro_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa2a9041cbd30d86260820b818cdf232e"></a>
<a class="el" href="classExiv2_1_1Value.html">Value</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#aa2a9041cbd30d86260820b818cdf232e">operator=</a> (const <a class="el" href="classExiv2_1_1Value.html">Value</a> &amp;rhs)</td></tr>
<tr class="memdesc:aa2a9041cbd30d86260820b818cdf232e inherit pro_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assignment operator. Protected so that it can only be used by subclasses but not directly. <br /></td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pub_static_methods_classExiv2_1_1Value"><td colspan="2" onclick="javascript:toggleInherit('pub_static_methods_classExiv2_1_1Value')"><img src="closed.png" alt="-"/>&#160;Static Public Member Functions inherited from <a class="el" href="classExiv2_1_1Value.html">Exiv2::Value</a></td></tr>
<tr class="memitem:a7a6c027316e3dec0f7e79430f104c137 inherit pub_static_methods_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classExiv2_1_1Value.html#a0f62e585b82c97738858b743e60dff21">AutoPtr</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a7a6c027316e3dec0f7e79430f104c137">create</a> (<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a> <a class="el" href="classExiv2_1_1Value.html#a1a56299aad4e614c4f0225d97530c038">typeId</a>)</td></tr>
<tr class="memdesc:a7a6c027316e3dec0f7e79430f104c137 inherit pub_static_methods_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">A (simple) factory to create a <a class="el" href="classExiv2_1_1Value.html" title="Common interface for all types of values used with metadata. ">Value</a> type.  <a href="#a7a6c027316e3dec0f7e79430f104c137">More...</a><br /></td></tr>
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<tr class="inherit_header pro_attribs_classExiv2_1_1Value"><td colspan="2" onclick="javascript:toggleInherit('pro_attribs_classExiv2_1_1Value')"><img src="closed.png" alt="-"/>&#160;Protected Attributes inherited from <a class="el" href="classExiv2_1_1Value.html">Exiv2::Value</a></td></tr>
<tr class="memitem:a4dc3a689b4bc1819290525cac491c1a8 inherit pro_attribs_classExiv2_1_1Value"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a4dc3a689b4bc1819290525cac491c1a8"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Value.html#a4dc3a689b4bc1819290525cac491c1a8">ok_</a></td></tr>
<tr class="memdesc:a4dc3a689b4bc1819290525cac491c1a8 inherit pro_attribs_classExiv2_1_1Value"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indicates the status of the previous to&lt;Type&gt; conversion. <br /></td></tr>
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</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Abstract base class for a string based Value type. </p>
<p>Uses a std::string to store the value and implements defaults for most operations. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="a68503471612daaf314f4b70e2216ef3b"></a>
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          <td class="memname">long Exiv2::StringValueBase::copy </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="namespaceExiv2.html#a94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a>&#160;</td>
          <td class="paramname"><em>byteOrder</em> = <code>invalidByteOrder</code>&#160;</td>
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        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
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<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
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<p>Write value to a character data buffer. </p>
<p>The user must ensure that the buffer has enough memory. Otherwise the call results in undefined behaviour.</p>
<dl class="section note"><dt>Note</dt><dd>The byte order is required by the interface but not used by this method, so just use the default.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">buf</td><td>Data buffer to write to. </td></tr>
    <tr><td class="paramname">byteOrder</td><td>Byte order. Not used. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Number of characters written. </dd></dl>

<p>Implements <a class="el" href="classExiv2_1_1Value.html#a3bf4f9c2eda4f7850a390de98668ce15">Exiv2::Value</a>.</p>

<p>Reimplemented in <a class="el" href="classExiv2_1_1CommentValue.html#a1318730b8a15f2f043b1d99390092181">Exiv2::CommentValue</a>.</p>

<p>References <a class="el" href="classExiv2_1_1StringValueBase.html#a64379351d8550e054f871067e4fecfb2">value_</a>.</p>

</div>
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          <td class="memname">int Exiv2::StringValueBase::read </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">long&#160;</td>
          <td class="paramname"><em>len</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="namespaceExiv2.html#a94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a>&#160;</td>
          <td class="paramname"><em>byteOrder</em> = <code>invalidByteOrder</code>&#160;</td>
        </tr>
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          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p>Read the value from a character buffer. </p>
<dl class="section note"><dt>Note</dt><dd>The byte order is required by the interface but not used by this method, so just use the default.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">buf</td><td>Pointer to the data buffer to read from </td></tr>
    <tr><td class="paramname">len</td><td>Number of bytes in the data buffer </td></tr>
    <tr><td class="paramname">byteOrder</td><td>Byte order. Not needed.</td></tr>
  </table>
  </dd>
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<dl class="section return"><dt>Returns</dt><dd>0 if successful. </dd></dl>

<p>Implements <a class="el" href="classExiv2_1_1Value.html#acc8870f802ebcdf9d4e081816ad8956e">Exiv2::Value</a>.</p>

<p>Reimplemented in <a class="el" href="classExiv2_1_1CommentValue.html#a4210d47fa2e7e8a24d8ad89328996e3b">Exiv2::CommentValue</a>.</p>

<p>References <a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450ca2d79fb07c9ec891f281968dad43c1e25">Exiv2::string</a>, and <a class="el" href="classExiv2_1_1StringValueBase.html#a64379351d8550e054f871067e4fecfb2">value_</a>.</p>

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          <td class="memname">float Exiv2::StringValueBase::toFloat </td>
          <td>(</td>
          <td class="paramtype">long&#160;</td>
          <td class="paramname"><em>n</em> = <code>0</code></td><td>)</td>
          <td> const</td>
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<p>Convert the <em>n</em>-th component of the value to a float. The behaviour of this method may be undefined if there is no <em>n</em>-th component. </p>
<dl class="section return"><dt>Returns</dt><dd>The converted value. </dd></dl>

<p>Implements <a class="el" href="classExiv2_1_1Value.html#a22d257caa6c1ffe6416ce02de7bd8c1c">Exiv2::Value</a>.</p>

<p>References <a class="el" href="classExiv2_1_1Value.html#a4dc3a689b4bc1819290525cac491c1a8">Exiv2::Value::ok_</a>, and <a class="el" href="classExiv2_1_1StringValueBase.html#a64379351d8550e054f871067e4fecfb2">value_</a>.</p>

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          <td class="memname">long Exiv2::StringValueBase::toLong </td>
          <td>(</td>
          <td class="paramtype">long&#160;</td>
          <td class="paramname"><em>n</em> = <code>0</code></td><td>)</td>
          <td> const</td>
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<p>Convert the <em>n</em>-th component of the value to a long. The behaviour of this method may be undefined if there is no <em>n</em>-th component. </p>
<dl class="section return"><dt>Returns</dt><dd>The converted value. </dd></dl>

<p>Implements <a class="el" href="classExiv2_1_1Value.html#a4530a3fc3e2305cf994de5476f46f953">Exiv2::Value</a>.</p>

<p>References <a class="el" href="classExiv2_1_1Value.html#a4dc3a689b4bc1819290525cac491c1a8">Exiv2::Value::ok_</a>, and <a class="el" href="classExiv2_1_1StringValueBase.html#a64379351d8550e054f871067e4fecfb2">value_</a>.</p>

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          <td class="memname"><a class="el" href="namespaceExiv2.html#a95756f3f7fa19103f83addf5fa088a30">Rational</a> Exiv2::StringValueBase::toRational </td>
          <td>(</td>
          <td class="paramtype">long&#160;</td>
          <td class="paramname"><em>n</em> = <code>0</code></td><td>)</td>
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<p>Convert the <em>n</em>-th component of the value to a Rational. The behaviour of this method may be undefined if there is no <em>n</em>-th component. </p>
<dl class="section return"><dt>Returns</dt><dd>The converted value. </dd></dl>

<p>Implements <a class="el" href="classExiv2_1_1Value.html#a595a4cb549bec8c19d290ca3e95a2678">Exiv2::Value</a>.</p>

<p>References <a class="el" href="classExiv2_1_1Value.html#a4dc3a689b4bc1819290525cac491c1a8">Exiv2::Value::ok_</a>, and <a class="el" href="classExiv2_1_1StringValueBase.html#a64379351d8550e054f871067e4fecfb2">value_</a>.</p>

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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="value_8hpp.html">value.hpp</a></li>
<li>value.cpp</li>
</ul>
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