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/**
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* GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
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<div class="title"><a href='http://arduino.cc/en'>Arduino</a></div>
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<p><a class='wikilink' href='http://arduino.cc/en/Main/Buy'>Buy</a>
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<p><strong>Reference</strong> <a class='wikilink' href='index.html'>Language</a> | <a class='wikilink' href='Libraries.html'>Libraries</a> | <a class='wikilink' href='Comparison.html'>Comparison</a> | <a class='wikilink' href='Changes.html'>Changes</a>
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<p class='vspace'></p><p><a class='wikilink' href='SD.html'>SD</a> : <em>File</em> class
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</p>
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<p class='vspace'></p><h2>isDirectory()</h2>
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<p>Directories (or folders) are special kinds of files, this function reports if the current file is a directory or not.
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</p>
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<p class='vspace'></p><h4>Syntax</h4>
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<p><em>file</em>.isDirectory()
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</p>
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<p class='vspace'></p><h4>Parameters</h4>
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<p><em>file</em>: an instance of the File class (returned by file.<a class='wikilink' href='SDopen.html'>open()</a>
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</p>
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<p class='vspace'></p><h4>Returns</h4>
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<p>boolean
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</p>
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<p class='vspace'></p><h4>Example</h4>
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<p>
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<div class='sourceblock ' id='sourceblock1'>
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<div class='sourceblocktext'><div class="arduino"><span class="co2">#include <SD.h></span><br />
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<br />
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File root<span class="sy0">;</span><br />
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<br />
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<span class="kw1">void</span> <span class="kw3">setup</span><span class="br0">(</span><span class="br0">)</span><br />
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<span class="br0">{</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">begin</span><span class="br0">(</span><span class="nu0">9600</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="kw1">pinMode</span><span class="br0">(</span><span class="nu0">10</span><span class="sy0">,</span> <span class="kw2">OUTPUT</span><span class="br0">)</span><span class="sy0">;</span><br />
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<br />
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SD.<span class="kw1">begin</span><span class="br0">(</span><span class="nu0">10</span><span class="br0">)</span><span class="sy0">;</span><br />
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<br />
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root <span class="sy0">=</span> SD.<span class="me1">open</span><span class="br0">(</span><span class="st0">"/"</span><span class="br0">)</span><span class="sy0">;</span><br />
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<br />
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printDirectory<span class="br0">(</span>root<span class="sy0">,</span> <span class="nu0">0</span><span class="br0">)</span><span class="sy0">;</span><br />
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<br />
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<span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">(</span><span class="st0">"done!"</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="br0">}</span><br />
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<br />
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<span class="kw1">void</span> <span class="kw3">loop</span><span class="br0">(</span><span class="br0">)</span><br />
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<span class="br0">{</span><br />
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<span class="co1">// nothing happens after setup finishes.</span><br />
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<span class="br0">}</span><br />
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<br />
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<span class="kw1">void</span> printDirectory<span class="br0">(</span>File dir<span class="sy0">,</span> <span class="kw1">int</span> numTabs<span class="br0">)</span> <span class="br0">{</span><br />
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<span class="kw1">while</span><span class="br0">(</span><span class="kw1">true</span><span class="br0">)</span> <span class="br0">{</span><br />
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<br />
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File entry <span class="sy0">=</span> dir.<span class="me1">openNextFile</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="kw1">if</span> <span class="br0">(</span><span class="sy0">!</span> entry<span class="br0">)</span> <span class="br0">{</span><br />
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<span class="co1">// no more files</span><br />
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<span class="co1">//Serial.println("**nomorefiles**");</span><br />
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<span class="kw1">break</span><span class="sy0">;</span><br />
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<span class="br0">}</span><br />
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<span class="kw1">for</span> <span class="br0">(</span>uint8_t i<span class="sy0">=</span><span class="nu0">0</span><span class="sy0">;</span> i<span class="sy0"><</span>numTabs<span class="sy0">;</span> i<span class="sy0">++</span><span class="br0">)</span> <span class="br0">{</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">(</span><span class="st0">'<span class="es1">\t</span>'</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="br0">}</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">(</span>entry.<span class="me1">name</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="kw1">if</span> <span class="br0">(</span>entry.<span class="me1">isDirectory</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span> <span class="br0">{</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">(</span><span class="st0">"/"</span><span class="br0">)</span><span class="sy0">;</span><br />
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printDirectory<span class="br0">(</span>entry<span class="sy0">,</span> numTabs<span class="sy0">+</span><span class="nu0">1</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="br0">}</span> <span class="kw1">else</span> <span class="br0">{</span><br />
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<span class="co1">// files have sizes, directories do not</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">(</span><span class="st0">"<span class="es1">\t</span><span class="es1">\t</span>"</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">(</span>entry.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">,</span> <span class="kw2">DEC</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="br0">}</span><br />
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<span class="br0">}</span><br />
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<span class="br0">}</span></div></div>
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<div class='sourceblocklink'><a href='#' type='text/plain'>[Get Code]</a></div>
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</div>
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</p>
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<p class='vspace'></p><h4>See Also</h4>
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<ul><li><a class='wikilink' href='FileOpenNextFile.html'>openNextFile()</a>
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</li><li><a class='wikilink' href='FileRewindDirectory.html'>rewindDirectory()</a>
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</li></ul><p><a class='wikilink' href='index.html'>Reference Home</a>
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<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://arduino.cc/forum/index.php/board,23.0.html' rel='nofollow'>Forum</a>.</em>
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</p>
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<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
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<a class='urllink' href='http://creativecommons.org/licenses/by-sa/3.0/' rel='nofollow'>Creative Commons Attribution-ShareAlike 3.0 License</a>. Code samples in the reference are released into the public domain.
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