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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_1DataValue.html">DataValue</a></li> </ul>
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<a href="#pub-types">Public Types</a> |
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<div class="title">Exiv2::DataValue Class Reference</div> </div>
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<p>Value for an undefined data type.
<a href="classExiv2_1_1DataValue.html#details">More...</a></p>
<p><code>#include <value.hpp></code></p>
<div id="dynsection-0" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
<img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for Exiv2::DataValue:</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="25,5,168,32"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<div id="dynsection-1" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
<img id="dynsection-1-trigger" src="closed.png" alt="+"/> Collaboration diagram for Exiv2::DataValue:</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="5,184,148,211"/><area shape="rect" id="node4" title="STL class. " alt="" coords="187,95,369,121"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<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:a46b580e6be9aa7708a75eed270f5c89f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a46b580e6be9aa7708a75eed270f5c89f"></a>
typedef std::auto_ptr< <a class="el" href="classExiv2_1_1DataValue.html">DataValue</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a46b580e6be9aa7708a75eed270f5c89f">AutoPtr</a></td></tr>
<tr class="memdesc:a46b580e6be9aa7708a75eed270f5c89f"><td class="mdescLeft"> </td><td class="mdescRight">Shortcut for a DataValue auto pointer. <br /></td></tr>
<tr class="separator:a46b580e6be9aa7708a75eed270f5c89f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa99856ccc6fc7bf3978b7f49d97b0e88"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa99856ccc6fc7bf3978b7f49d97b0e88"></a>
typedef std::vector< <a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#aa99856ccc6fc7bf3978b7f49d97b0e88">ValueType</a></td></tr>
<tr class="memdesc:aa99856ccc6fc7bf3978b7f49d97b0e88"><td class="mdescLeft"> </td><td class="mdescRight">Type used to store the data. <br /></td></tr>
<tr class="separator:aa99856ccc6fc7bf3978b7f49d97b0e88"><td class="memSeparator" colspan="2"> </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="-"/> 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< <a class="el" href="classExiv2_1_1Value.html">Value</a> > </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"> </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"> </td></tr>
</table><table class="memberdecls">
<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:aecfbbc2bc400abbbdd2d4282356a0ddd"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aecfbbc2bc400abbbdd2d4282356a0ddd"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#aecfbbc2bc400abbbdd2d4282356a0ddd">DataValue</a> (<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a> <a class="el" href="classExiv2_1_1Value.html#a1a56299aad4e614c4f0225d97530c038">typeId</a>=<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450caa044ece6f004f519dce91f57319bb6eb">undefined</a>)</td></tr>
<tr class="memdesc:aecfbbc2bc400abbbdd2d4282356a0ddd"><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <br /></td></tr>
<tr class="separator:aecfbbc2bc400abbbdd2d4282356a0ddd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a614ccfa52204af130091f7b1d7d27ea7"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a614ccfa52204af130091f7b1d7d27ea7"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a614ccfa52204af130091f7b1d7d27ea7">DataValue</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, <a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a> <a class="el" href="classExiv2_1_1Value.html#a1a56299aad4e614c4f0225d97530c038">typeId</a>=<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450caa044ece6f004f519dce91f57319bb6eb">undefined</a>)</td></tr>
<tr class="memdesc:a614ccfa52204af130091f7b1d7d27ea7"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:a614ccfa52204af130091f7b1d7d27ea7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aaa177a85787da59fbc29ac368ac4cee0"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aaa177a85787da59fbc29ac368ac4cee0"></a>
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#aaa177a85787da59fbc29ac368ac4cee0">~DataValue</a> ()</td></tr>
<tr class="memdesc:aaa177a85787da59fbc29ac368ac4cee0"><td class="mdescLeft"> </td><td class="mdescRight">Virtual destructor. <br /></td></tr>
<tr class="separator:aaa177a85787da59fbc29ac368ac4cee0"><td class="memSeparator" colspan="2"> </td></tr>
<tr><td colspan="2"><div class="groupHeader">Manipulators</div></td></tr>
<tr class="memitem:a927fef988688e4b33d4fcaffb51679dc"><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a927fef988688e4b33d4fcaffb51679dc">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:a927fef988688e4b33d4fcaffb51679dc"><td class="mdescLeft"> </td><td class="mdescRight">Read the value from a character buffer. <a href="#a927fef988688e4b33d4fcaffb51679dc">More...</a><br /></td></tr>
<tr class="separator:a927fef988688e4b33d4fcaffb51679dc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afb8d9321e3b80c239b3a8df9b1ca4083"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="afb8d9321e3b80c239b3a8df9b1ca4083"></a>
virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#afb8d9321e3b80c239b3a8df9b1ca4083">read</a> (const std::string &buf)</td></tr>
<tr class="memdesc:afb8d9321e3b80c239b3a8df9b1ca4083"><td class="mdescLeft"> </td><td class="mdescRight">Set the data from a string of integer values (e.g., "0 1 2 3") <br /></td></tr>
<tr class="separator:afb8d9321e3b80c239b3a8df9b1ca4083"><td class="memSeparator" colspan="2"> </td></tr>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<tr class="memitem:af4ba7060e604c9934006329baf7dd2af"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="af4ba7060e604c9934006329baf7dd2af"></a>
<a class="el" href="classExiv2_1_1Value.html#a0f62e585b82c97738858b743e60dff21">AutoPtr</a> </td><td class="memItemRight" valign="bottom"><b>clone</b> () const </td></tr>
<tr class="separator:af4ba7060e604c9934006329baf7dd2af"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad96c8ded5036c82f33d9eb214ed12587"><td class="memItemLeft" align="right" valign="top">virtual long </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#ad96c8ded5036c82f33d9eb214ed12587">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:ad96c8ded5036c82f33d9eb214ed12587"><td class="mdescLeft"> </td><td class="mdescRight">Write value to a character data buffer. <a href="#ad96c8ded5036c82f33d9eb214ed12587">More...</a><br /></td></tr>
<tr class="separator:ad96c8ded5036c82f33d9eb214ed12587"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1ffc722677c75ba8e55da29bd15cac72"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1ffc722677c75ba8e55da29bd15cac72"></a>
virtual long </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a1ffc722677c75ba8e55da29bd15cac72">count</a> () const </td></tr>
<tr class="memdesc:a1ffc722677c75ba8e55da29bd15cac72"><td class="mdescLeft"> </td><td class="mdescRight">Return the number of components of the value. <br /></td></tr>
<tr class="separator:a1ffc722677c75ba8e55da29bd15cac72"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a09524728bded980d22d93e3d95331dea"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a09524728bded980d22d93e3d95331dea"></a>
virtual long </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a09524728bded980d22d93e3d95331dea">size</a> () const </td></tr>
<tr class="memdesc:a09524728bded980d22d93e3d95331dea"><td class="mdescLeft"> </td><td class="mdescRight">Return the size of the value in bytes. <br /></td></tr>
<tr class="separator:a09524728bded980d22d93e3d95331dea"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aaabdc32e781b5d1ad83d5db6ce68c340"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aaabdc32e781b5d1ad83d5db6ce68c340"></a>
virtual std::ostream & </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#aaabdc32e781b5d1ad83d5db6ce68c340">write</a> (std::ostream &os) const </td></tr>
<tr class="memdesc:aaabdc32e781b5d1ad83d5db6ce68c340"><td class="mdescLeft"> </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<<(std::ostream &os, const Value &value)</a>. <br /></td></tr>
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<tr class="memitem:a55001725fa8ce26fbac833c3192fa74f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a55001725fa8ce26fbac833c3192fa74f"></a>
virtual std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a55001725fa8ce26fbac833c3192fa74f">toString</a> (long n) const </td></tr>
<tr class="memdesc:a55001725fa8ce26fbac833c3192fa74f"><td class="mdescLeft"> </td><td class="mdescRight">Return the <em>n</em>-th component of the value as a string. The behaviour of this method may be undefined if there is no <em>n</em>-th component. <br /></td></tr>
<tr class="separator:a55001725fa8ce26fbac833c3192fa74f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0bea375d6f15bf5866af59e2efb2db8f"><td class="memItemLeft" align="right" valign="top">virtual long </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a0bea375d6f15bf5866af59e2efb2db8f">toLong</a> (long n=0) const </td></tr>
<tr class="memdesc:a0bea375d6f15bf5866af59e2efb2db8f"><td class="mdescLeft"> </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="#a0bea375d6f15bf5866af59e2efb2db8f">More...</a><br /></td></tr>
<tr class="separator:a0bea375d6f15bf5866af59e2efb2db8f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac9d9928ebae3d72b43421818a9ebfc3d"><td class="memItemLeft" align="right" valign="top">virtual float </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#ac9d9928ebae3d72b43421818a9ebfc3d">toFloat</a> (long n=0) const </td></tr>
<tr class="memdesc:ac9d9928ebae3d72b43421818a9ebfc3d"><td class="mdescLeft"> </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="#ac9d9928ebae3d72b43421818a9ebfc3d">More...</a><br /></td></tr>
<tr class="separator:ac9d9928ebae3d72b43421818a9ebfc3d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:add912d022aaee80ecf3ea6565036e946"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="namespaceExiv2.html#a95756f3f7fa19103f83addf5fa088a30">Rational</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#add912d022aaee80ecf3ea6565036e946">toRational</a> (long n=0) const </td></tr>
<tr class="memdesc:add912d022aaee80ecf3ea6565036e946"><td class="mdescLeft"> </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="#add912d022aaee80ecf3ea6565036e946">More...</a><br /></td></tr>
<tr class="separator:add912d022aaee80ecf3ea6565036e946"><td class="memSeparator" colspan="2"> </td></tr>
<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="-"/> 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>
 </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"> </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 </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"> </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 </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"> </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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<a class="el" href="namespaceExiv2.html#a5153319711f35fe81cbc13f4b852450c">TypeId</a> </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"> </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> </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"> </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 </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"> </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& os) const </a>of the concrete class. <br /></td></tr>
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virtual long </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"> </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> </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"> </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 </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"> </td><td class="mdescRight">Check the <em>ok</em> status indicator. After a to<Type> conversion, this indicator shows whether the conversion was successful. <br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
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<a class="el" href="classExiv2_1_1DataValue.html#aa99856ccc6fc7bf3978b7f49d97b0e88">ValueType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1DataValue.html#a78ba17db5467af7e38fee8c815b2eaee">value_</a></td></tr>
<tr class="memdesc:a78ba17db5467af7e38fee8c815b2eaee"><td class="mdescLeft"> </td><td class="mdescRight">Stores the data value. <br /></td></tr>
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<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="-"/> 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> </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"> </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_methods_classExiv2_1_1Value"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_classExiv2_1_1Value')"><img src="closed.png" alt="-"/> 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> & </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> &rhs)</td></tr>
<tr class="memdesc:aa2a9041cbd30d86260820b818cdf232e inherit pro_methods_classExiv2_1_1Value"><td class="mdescLeft"> </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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<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="-"/> 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 </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"> </td><td class="mdescRight">Indicates the status of the previous to<Type> conversion. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Value for an undefined data type. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">long Exiv2::DataValue::copy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> * </td>
<td class="paramname"><em>buf</em>, </td>
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<td class="paramtype"><a class="el" href="namespaceExiv2.html#a94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a> </td>
<td class="paramname"><em>byteOrder</em> = <code>invalidByteOrder</code> </td>
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<p>Write value to a character data 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>
<p>The user must ensure that the buffer has enough memory. Otherwise the call results in undefined behaviour.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">buf</td><td>Data buffer to write to. </td></tr>
<tr><td class="paramname">byteOrder</td><td>Byte order. Not needed. </td></tr>
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</dd>
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<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>References <a class="el" href="classExiv2_1_1DataValue.html#a78ba17db5467af7e38fee8c815b2eaee">value_</a>.</p>
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<td class="memname">int Exiv2::DataValue::read </td>
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<td class="paramtype">const <a class="el" href="namespaceExiv2.html#a16f60a5bd4207fe155f6cf93a15efa72">byte</a> * </td>
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<td class="paramname"><em>byteOrder</em> = <code>invalidByteOrder</code> </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>
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<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>
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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>References <a class="el" href="classExiv2_1_1DataValue.html#a78ba17db5467af7e38fee8c815b2eaee">value_</a>.</p>
<p>Referenced by <a class="el" href="classExiv2_1_1DataValue.html#a614ccfa52204af130091f7b1d7d27ea7">DataValue()</a>.</p>
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<td class="memname">float Exiv2::DataValue::toFloat </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_1DataValue.html#a78ba17db5467af7e38fee8c815b2eaee">value_</a>.</p>
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<td class="memname">long Exiv2::DataValue::toLong </td>
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<td class="paramtype">long </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 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_1DataValue.html#a78ba17db5467af7e38fee8c815b2eaee">value_</a>.</p>
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<td class="memname"><a class="el" href="namespaceExiv2.html#a95756f3f7fa19103f83addf5fa088a30">Rational</a> Exiv2::DataValue::toRational </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_1DataValue.html#a78ba17db5467af7e38fee8c815b2eaee">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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