exiv2/website/var/__example1__

<div class="fragment"><pre><span class="comment">// ***************************************************************** -*- C++ -*-</span>
<span class="comment">// exifprint.cpp, $Rev: 2286 $</span>
<span class="comment">// Sample program to print the Exif metadata of an image</span>

<span class="preprocessor">#include &lt;exiv2/exiv2.hpp&gt;</span>
<span class="preprocessor">#include &lt;iostream&gt;</span>
<span class="preprocessor">#include &lt;iomanip&gt;</span>
<span class="preprocessor">#include &lt;cassert&gt;</span>

<span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>* <span class="keyword">const</span> argv[])
<span class="keyword">try</span> {

    <span class="keywordflow">if</span> (argc != 2) {
        std::cout &lt;&lt; <span class="stringliteral">"Usage: "</span> &lt;&lt; argv[0] &lt;&lt; <span class="stringliteral">" file\n"</span>;
        <span class="keywordflow">return</span> 1;
    }

    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(argv[1]);
    assert(image.get() != 0);
    image-&gt;readMetadata();

    Exiv2::ExifData &amp;exifData = image-&gt;exifData();
    <span class="keywordflow">if</span> (exifData.empty()) {
        std::string error(argv[1]);
        error += <span class="stringliteral">": No Exif data found in the file"</span>;
        <span class="keywordflow">throw</span> Exiv2::Error(1, error);
    }
    Exiv2::ExifData::const_iterator end = exifData.end();
    <span class="keywordflow">for</span> (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
        const char* tn = i-&gt;typeName();
        std::cout &lt;&lt; std::setw(44) &lt;&lt; std::setfill(<span class="charliteral">' '</span>) &lt;&lt; std::left
                  &lt;&lt; i-&gt;key() &lt;&lt; <span class="stringliteral">" "</span>
                  &lt;&lt; <span class="stringliteral">"0x"</span> &lt;&lt; std::setw(4) &lt;&lt; std::setfill(<span class="charliteral">'0'</span>) &lt;&lt; std::right
                  &lt;&lt; std::hex &lt;&lt; i-&gt;tag() &lt;&lt; <span class="stringliteral">" "</span>
                  &lt;&lt; std::setw(9) &lt;&lt; std::setfill(<span class="charliteral">' '</span>) &lt;&lt; std::left
                  &lt;&lt; (tn ? tn : <span class="stringliteral">"Unknown"</span>) &lt;&lt; <span class="stringliteral">" "</span>
                  &lt;&lt; std::dec &lt;&lt; std::setw(3)
                  &lt;&lt; std::setfill(<span class="charliteral">' '</span>) &lt;&lt; std::right
                  &lt;&lt; i-&gt;count() &lt;&lt; <span class="stringliteral">"  "</span>
                  &lt;&lt; std::dec &lt;&lt; i-&gt;value()
                  &lt;&lt; <span class="stringliteral">"\n"</span>;
    }

    <span class="keywordflow">return</span> 0;
}
<span class="keywordflow">catch</span> (Exiv2::AnyError&amp; e) {
    std::cout &lt;&lt; <span class="stringliteral">"Caught Exiv2 exception '"</span> &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"'\n"</span>;
    <span class="keywordflow">return</span> -1;
}
</pre></div>