?? readdir.html
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<title>FatFs - f_readdir</title>
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<div class="para">
<h2>f_readdir</h2>
<p>The f_readdir reads directory items.</p>
<pre>
FRESULT f_readdir (
DIR* <em>DirObject</em>, // Pointer to the directory object strcture
FILINFO* <em>FileInfo</em> // Pointer to the blank file information structure
);
</pre>
</div>
<div class="para">
<h4>Parameters</h4>
<dl class="par">
<dt>DirObject</dt>
<dd>Pointer to the valid directory object strcture.</dd>
<dt>FileInfo</dt>
<dd>Pointer to the file information structure to store the read item.</dd>
</dl>
</div>
<div class="para">
<h4>Return Values</h4>
<dl class="ret">
<dt>FR_OK (0)</dt>
<dd>The function succeeded.</dd>
<dt>FR_NOT_READY</dt>
<dd>The disk drive cannot work due to no medium in the drive or any other reason.</dd>
<dt>FR_RW_ERROR</dt>
<dd>Any error occured in low level disk I/O.</dd>
<dt>FR_NOT_ENABLED</dt>
<dd>FatFs module has not been enabled.</dd>
</dl>
</div>
<div class="para">
<h4>Description</h4>
<p>The f_readdir reads directory items in sequence. All items in the directory can be read by calling f_readdir repeatedly. When all items have been read and no item to read, the member <tt>f_name[]</tt> in the file information structure gets a null string. For details of the file informations, refer to the <tt>FILINFO</tt>. This function is not supported in minimum configuration.</p>
</div>
<div class="para">
<h4>Sample Code</h4>
<pre>
void scan_files (char* path)
{
FILINFO finfo;
DIR dirs;
int i;
if (f_opendir(&dirs, path) == FR_OK) {
i = strlen(path);
while ((f_readdir(&dirs, &finfo) == FR_OK) && finfo.f_name[0]) {
if (finfo.f_attrib & AM_DIR) {
sprintf(path+i, "/%s", &finfo.f_name[0]);
scan_files(path);
*(path+i) = '\0';
} else {
printf("%s/%s\n", path, &finfo.f_name[0]);
}
}
}
}
</pre>
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<div class="para">
<h4>References</h4>
<p><tt><a href="opendir.html">f_opendir</a>, <a href="stat.html">f_stat</a>, <a href="sfileinfo.html">FILINFO</a>, <a href="sdir.html">DIR</a></tt></p>
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<p class="foot"><a href="../00index_e.html">Return</a></p>
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