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<h1>version.hpp File Reference</h1>Precompiler define and a function to test the Exiv2 version. References: Similar versioning defines are used in KDE, GTK and other libraries. See <a href="http://apr.apache.org/versioning.html">http://apr.apache.org/versioning.html</a> for accompanying guidelines.
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<table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Namespaces</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">namespace </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceExiv2.html">Exiv2</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides classes and functions to encode and decode Exif and Iptc data. The <b>libexiv2</b> API consists of the objects of this namespace. <br></td></tr>
<p>
<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="9d7ce36e8573ce08d0d653f6608f5e2f"></a><!-- doxytag: member="version.hpp::EXIV2_MAJOR_VERSION" ref="9d7ce36e8573ce08d0d653f6608f5e2f" args="" -->
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="version_8hpp.html#9d7ce36e8573ce08d0d653f6608f5e2f">EXIV2_MAJOR_VERSION</a> (0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Exiv2 MAJOR version number of the library used at compile-time. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0c09c19387473b4cf4139bdab514df45"></a><!-- doxytag: member="version.hpp::EXIV2_MINOR_VERSION" ref="0c09c19387473b4cf4139bdab514df45" args="" -->
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="version_8hpp.html#0c09c19387473b4cf4139bdab514df45">EXIV2_MINOR_VERSION</a> (18)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Exiv2 MINOR version number of the library used at compile-time. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a4be9dc2030a5a50ecc1461bfb24fa45"></a><!-- doxytag: member="version.hpp::EXIV2_PATCH_VERSION" ref="a4be9dc2030a5a50ecc1461bfb24fa45" args="" -->
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="version_8hpp.html#a4be9dc2030a5a50ecc1461bfb24fa45">EXIV2_PATCH_VERSION</a> (2)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Exiv2 PATCH version number of the library used at compile-time. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5d75ce8591ccba90183669df83a9b436"></a><!-- doxytag: member="version.hpp::EXIV2_MAKE_VERSION" ref="5d75ce8591ccba90183669df83a9b436" args="(major, minor, patch)" -->
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="version_8hpp.html#5d75ce8591ccba90183669df83a9b436">EXIV2_MAKE_VERSION</a>(major, minor, patch) (((major) << 16) | ((minor) << 8) | (patch))</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Make an integer version number for comparison from a major, minor and a patch version number. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="fc8ab8239dc3f8fc5e938fe54f48e5b5"></a><!-- doxytag: member="version.hpp::EXIV2_VERSION" ref="fc8ab8239dc3f8fc5e938fe54f48e5b5" args="" -->
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="version_8hpp.html#fc8ab8239dc3f8fc5e938fe54f48e5b5">EXIV2_VERSION</a> EXIV2_MAKE_VERSION(EXIV2_MAJOR_VERSION,EXIV2_MINOR_VERSION,EXIV2_PATCH_VERSION)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The Exiv2 version number of the library used at compile-time as an integer number for easy comparison. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="version_8hpp.html#d0ca585932ba389302880cc482ea7d2e">EXIV2_CHECK_VERSION</a>(major, minor, patch) ( Exiv2::versionNumber() >= EXIV2_MAKE_VERSION(major,minor,patch) )</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Deprecated version check macro. Do not use. <a href="#d0ca585932ba389302880cc482ea7d2e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="version_8hpp.html#94581cdd2feca9d041e0487c24328dd3">EXIV2_TEST_VERSION</a>(major, minor, patch) ( EXIV2_VERSION >= EXIV2_MAKE_VERSION(major,minor,patch) )</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Macro to test the version of the available Exiv2 library at compile-time. Return true if it is the same as or newer than the passed-in version. <a href="#94581cdd2feca9d041e0487c24328dd3"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dd349cd7b6bc3b9566d00f8d41c08fe3"></a><!-- doxytag: member="version.hpp::versionNumber" ref="dd349cd7b6bc3b9566d00f8d41c08fe3" args="()" -->
EXIV2API int </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceExiv2.html#dd349cd7b6bc3b9566d00f8d41c08fe3">Exiv2::versionNumber</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the version of Exiv2 available at runtime as an integer. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ed864b95392c8c3686ffffec88d7cad5"></a><!-- doxytag: member="version.hpp::version" ref="ed864b95392c8c3686ffffec88d7cad5" args="()" -->
EXIV2API const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceExiv2.html#ed864b95392c8c3686ffffec88d7cad5">Exiv2::version</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the version of Exiv2 available at runtime as a string. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">EXIV2API bool </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceExiv2.html#d8d8f92acdf4d23b673225584405fba5">Exiv2::testVersion</a> (int major, int minor, int patch)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Test the version of the available Exiv2 library at runtime. Return true if it is the same as or newer than the passed-in version. <a href="#d8d8f92acdf4d23b673225584405fba5"></a><br></td></tr>
</table>
<hr><h2>Detailed Description</h2>
Precompiler define and a function to test the Exiv2 version. References: Similar versioning defines are used in KDE, GTK and other libraries. See <a href="http://apr.apache.org/versioning.html">http://apr.apache.org/versioning.html</a> for accompanying guidelines.
<p>
<dl class="version" compact><dt><b>Version:</b></dt><dd></dd></dl>
<dl class="rcs" compact><dt><b>Rev</b></dt><dd>1834 </dd></dl>
<dl class="author" compact><dt><b>Author:</b></dt><dd>Andreas Huggel (ahu) <a href="mailto:ahuggel@gmx.net">ahuggel@gmx.net</a> </dd></dl>
<dl class="date" compact><dt><b>Date:</b></dt><dd>31-May-06, ahu: created </dd></dl>
<hr><h2>Define Documentation</h2>
<a class="anchor" name="d0ca585932ba389302880cc482ea7d2e"></a><!-- doxytag: member="version.hpp::EXIV2_CHECK_VERSION" ref="d0ca585932ba389302880cc482ea7d2e" args="(major, minor, patch)" -->
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<tr>
<td class="memname">#define EXIV2_CHECK_VERSION </td>
<td>(</td>
<td class="paramtype">major, <tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">minor, <tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">patch </td>
<td class="paramname"> </td>
<td> ) </td>
<td> ( Exiv2::versionNumber() >= EXIV2_MAKE_VERSION(major,minor,patch) )</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Deprecated version check macro. Do not use.
<p>
This macro has flaws and only remains for backward compatibility. Use EXIV2_TEST_VERSION and <a class="el" href="namespaceExiv2.html#d8d8f92acdf4d23b673225584405fba5" title="Test the version of the available Exiv2 library at runtime. Return true if it is...">testVersion()</a> instead.
</div>
</div><p>
<a class="anchor" name="94581cdd2feca9d041e0487c24328dd3"></a><!-- doxytag: member="version.hpp::EXIV2_TEST_VERSION" ref="94581cdd2feca9d041e0487c24328dd3" args="(major, minor, patch)" -->
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<td class="memname">#define EXIV2_TEST_VERSION </td>
<td>(</td>
<td class="paramtype">major, <tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">minor, <tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">patch </td>
<td class="paramname"> </td>
<td> ) </td>
<td> ( EXIV2_VERSION >= EXIV2_MAKE_VERSION(major,minor,patch) )</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Macro to test the version of the available Exiv2 library at compile-time. Return true if it is the same as or newer than the passed-in version.
<p>
Versions are denoted using a triplet of integers: <em>MAJOR.MINOR.PATCH</em> .<p>
<div class="fragment"><pre class="fragment"> Don<span class="stringliteral">'t include the <exiv2/version.hpp> file directly, it is included by</span>
<span class="stringliteral"> <exiv2/types.hpp>. Early Exiv2 versions didn'</span>t have <a class="code" href="namespaceExiv2.html#ed864b95392c8c3686ffffec88d7cad5" title="Return the version of Exiv2 available at runtime as a string.">version</a>.hpp and the macros.
#include <exiv2/types.hpp>
Make sure an <a class="code" href="version_8hpp.html#94581cdd2feca9d041e0487c24328dd3" title="Macro to test the version of the available Exiv2 library at compile-time. Return...">EXIV2_TEST_VERSION</a> macro exists:
<span class="preprocessor"> #ifdef EXIV2_VERSION</span>
<span class="preprocessor"></span><span class="preprocessor"> # ifndef EXIV2_TEST_VERSION</span>
<span class="preprocessor"></span><span class="preprocessor"> # define EXIV2_TEST_VERSION(major,minor,patch) \</span>
<span class="preprocessor"> ( EXIV2_VERSION >= EXIV2_MAKE_VERSION(major,minor,patch) )</span>
<span class="preprocessor"></span><span class="preprocessor"> # endif</span>
<span class="preprocessor"></span><span class="preprocessor"> #else</span>
<span class="preprocessor"></span><span class="preprocessor"> # define EXIV2_TEST_VERSION(major,minor,patch) (false)</span>
<span class="preprocessor"></span><span class="preprocessor"> #endif</span>
<span class="preprocessor"></span>
std::cout << <span class="stringliteral">"Compiled with Exiv2 version "</span> << EXV_PACKAGE_VERSION << <span class="stringliteral">"\n"</span>
<< <span class="stringliteral">"Runtime Exiv2 version is "</span> << <a class="code" href="namespaceExiv2.html#ed864b95392c8c3686ffffec88d7cad5" title="Return the version of Exiv2 available at runtime as a string.">Exiv2::version</a>() << <span class="stringliteral">"\n"</span>;
Test the Exiv2 <a class="code" href="namespaceExiv2.html#ed864b95392c8c3686ffffec88d7cad5" title="Return the version of Exiv2 available at runtime as a string.">version</a> available at runtime but compile the <span class="keywordflow">if</span>-clause only <span class="keywordflow">if</span>
the compile-<a class="code" href="namespaceExiv2.html#5153319711f35fe81cbc13f4b852450c8526caf002a100bd730312d45808f1b6" title="IPTC time type.">time</a> <a class="code" href="namespaceExiv2.html#ed864b95392c8c3686ffffec88d7cad5" title="Return the version of Exiv2 available at runtime as a string.">version</a> is at least 0.15. Earlier versions didn<span class="stringliteral">'t have a</span>
<span class="stringliteral"> testVersion() function:</span>
<span class="stringliteral"></span>
<span class="stringliteral"> #if EXIV2_TEST_VERSION(0,15,0)</span>
<span class="stringliteral"> if (Exiv2::testVersion(0,13,0)) {</span>
<span class="stringliteral"> std::cout << "Available Exiv2 version is equal to or greater than 0.13\n";</span>
<span class="stringliteral"> }</span>
<span class="stringliteral"> else {</span>
<span class="stringliteral"> std::cout << "Installed Exiv2 version is less than 0.13\n";</span>
<span class="stringliteral"> }</span>
<span class="stringliteral"> #else</span>
<span class="stringliteral"> std::cout << "Compile-time Exiv2 version doesn'</span>t have <a class="code" href="namespaceExiv2.html#d8d8f92acdf4d23b673225584405fba5" title="Test the version of the available Exiv2 library at runtime. Return true if it is...">Exiv2::testVersion</a>()\n<span class="stringliteral">";</span>
<span class="stringliteral"> #endif</span>
</pre></div>
</div>
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