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SdFat


			
				
					
						
						
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">ExFile Class Reference</div>  </div>
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<p>exFAT file with Arduino Stream.  
 <a href="class_ex_file.html#details">More...</a></p>

<p><code>#include &lt;ExFatFile.h&gt;</code></p>
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Inheritance diagram for ExFile:</div>
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Collaboration diagram for ExFile:</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a0112cc39b64aac6f1ec47741397a7582"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a0112cc39b64aac6f1ec47741397a7582">available</a> ()</td></tr>
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<tr class="memitem:adcf47e15b819fe2d6faac2a027ab30f5"><td class="memItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#adcf47e15b819fe2d6faac2a027ab30f5">available64</a> ()</td></tr>
<tr class="separator:adcf47e15b819fe2d6faac2a027ab30f5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac2004e7bf328b3edda7d4c3acba2726f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ac2004e7bf328b3edda7d4c3acba2726f">clearError</a> ()</td></tr>
<tr class="separator:ac2004e7bf328b3edda7d4c3acba2726f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abc0d3863895c17df53930bdfa84cb06f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#abc0d3863895c17df53930bdfa84cb06f">clearWriteError</a> ()</td></tr>
<tr class="separator:abc0d3863895c17df53930bdfa84cb06f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7ba9e04099bdf8fd34220ebfdde72867"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a7ba9e04099bdf8fd34220ebfdde72867">close</a> ()</td></tr>
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<tr class="memitem:add39a8c7f7961321ba647e8da8f3d461"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#add39a8c7f7961321ba647e8da8f3d461">contiguousRange</a> (uint32_t *bgnSector, uint32_t *endSector)</td></tr>
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<tr class="memitem:ab49396aad3f6500aa19f75490dc26719"><td class="memItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ab49396aad3f6500aa19f75490dc26719">curPosition</a> () const</td></tr>
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<tr class="memitem:ada4dde9f2eed36bf556fcf1bd3d28ccf"><td class="memItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ada4dde9f2eed36bf556fcf1bd3d28ccf">dataLength</a> ()</td></tr>
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<tr class="memitem:a5e3baa5d5269c2948cfaf604c42f6a16"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a5e3baa5d5269c2948cfaf604c42f6a16">dirIndex</a> ()</td></tr>
<tr class="separator:a5e3baa5d5269c2948cfaf604c42f6a16"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a22a717ddc6d2004c540c67a14264d9dd"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a22a717ddc6d2004c540c67a14264d9dd">exists</a> (const ExChar_t *path)</td></tr>
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<tr class="memitem:a8614bcbf04b7bbfc70fe36d2fa7f70c1"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a8614bcbf04b7bbfc70fe36d2fa7f70c1">fgetpos</a> (fspos_t *pos)</td></tr>
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<tr class="memitem:abc69c9dfc8fdb4ebf9db3bc37c879dc6"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#abc69c9dfc8fdb4ebf9db3bc37c879dc6">fgets</a> (char *str, int num, char *delim=<a class="el" href="_stdio_stream_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)</td></tr>
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<tr class="memitem:af2c08909b62b01f3edc4ee0c51ea7435"><td class="memItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#af2c08909b62b01f3edc4ee0c51ea7435">fileSize</a> ()</td></tr>
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<tr class="memitem:a883a36174d7753abbbdb7547e44b1739"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a883a36174d7753abbbdb7547e44b1739">firstSector</a> ()</td></tr>
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<tr class="memitem:a32f813e659414892a58aa5157fe14f82"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a32f813e659414892a58aa5157fe14f82">flush</a> ()</td></tr>
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<tr class="memitem:aea1e4d0c0981081774dc3c7cd3c55264"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#aea1e4d0c0981081774dc3c7cd3c55264">fsetpos</a> (const fspos_t *pos)</td></tr>
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<tr class="memitem:a0d935161fde4a3f8d2fcd13140073adc"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a0d935161fde4a3f8d2fcd13140073adc">getAccessDateTime</a> (uint16_t *pdate, uint16_t *ptime)</td></tr>
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<tr class="memitem:a703397b32592631c189a23047cc44c09"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a703397b32592631c189a23047cc44c09">getCreateDateTime</a> (uint16_t *pdate, uint16_t *ptime)</td></tr>
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<tr class="memitem:ac697224450ca216c60585d25f5f6e310"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ac697224450ca216c60585d25f5f6e310">getError</a> ()</td></tr>
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<tr class="memitem:ac0c15cff235937cdfd7860d5fb441728"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ac0c15cff235937cdfd7860d5fb441728">getModifyDateTime</a> (uint16_t *pdate, uint16_t *ptime)</td></tr>
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<tr class="memitem:aba93e2c18be9fa4df7e067b7d6ac5906"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#aba93e2c18be9fa4df7e067b7d6ac5906">getName</a> (ExChar_t *<a class="el" href="class_stream_file.html#a8792c863080576eb65ce6cacbe1dd931">name</a>, size_t <a class="el" href="class_stream_file.html#a5813d451e7f7ba57a04d177caffc5a9f">size</a>)</td></tr>
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<tr class="memitem:a01da9896a59671a61f90dd20c3ac5d07"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a01da9896a59671a61f90dd20c3ac5d07">getWriteError</a> ()</td></tr>
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<tr class="memitem:a7a167102bd47b7cf91167b69f8cc57d1"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a7a167102bd47b7cf91167b69f8cc57d1">isContiguous</a> () const</td></tr>
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<tr class="memitem:ad0a3687bd95bed5b216651335e66b500"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ad0a3687bd95bed5b216651335e66b500">isDir</a> () const</td></tr>
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<tr class="memitem:a586ad44055eca4c1b2b457299b829d44"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a586ad44055eca4c1b2b457299b829d44">isDirectory</a> ()</td></tr>
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<tr class="memitem:ac926285fa4321ebee28fa91beb511eae"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ac926285fa4321ebee28fa91beb511eae">isHidden</a> () const</td></tr>
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<tr class="memitem:a804c34bbe3ebefe2b6c1d77ff8d49a35"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a804c34bbe3ebefe2b6c1d77ff8d49a35">isOpen</a> () const</td></tr>
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<tr class="memitem:a9ca137dfba2c7772910f4d2b3fdd9411"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a9ca137dfba2c7772910f4d2b3fdd9411">isReadable</a> () const</td></tr>
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<tr class="memitem:ad9f8e7afcf749ebcaaf055bd569dc7da"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ad9f8e7afcf749ebcaaf055bd569dc7da">isRoot</a> () const</td></tr>
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<tr class="memitem:ad7e02a1db8fb5a90288bb4679e9ddcb9"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ad7e02a1db8fb5a90288bb4679e9ddcb9">isSubDir</a> () const</td></tr>
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<tr class="memitem:a04d1c43e80743f8c1a51b64062ce16dd"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a04d1c43e80743f8c1a51b64062ce16dd">isWritable</a> () const</td></tr>
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<tr class="memitem:aa0e074c891f3db5ea2ebd491667b03a6"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#aa0e074c891f3db5ea2ebd491667b03a6">ls</a> (<a class="el" href="_sys_call_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *pr)</td></tr>
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<tr class="memitem:a3a393624d52854e74bf385c9e513a86d"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a3a393624d52854e74bf385c9e513a86d">mkdir</a> (<a class="el" href="class_ex_fat_file.html">ExFatFile</a> *parent, const ExChar_t *path, bool pFlag=true)</td></tr>
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<tr class="memitem:a8792c863080576eb65ce6cacbe1dd931"><td class="memItemLeft" align="right" valign="top">const char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a8792c863080576eb65ce6cacbe1dd931">name</a> () const</td></tr>
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<tr class="memitem:ab1e224aba9eb796c7ad48062cc1434c2"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ab1e224aba9eb796c7ad48062cc1434c2">open</a> (const ExChar_t *path, int oflag=0X00)</td></tr>
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<tr class="memitem:ada8cd27e9a2f604f5c05088024a46a63"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_ex_file.html">ExFile</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_file.html#ada8cd27e9a2f604f5c05088024a46a63">openNextFile</a> (oflag_t oflag=0X00)</td></tr>
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<tr class="memitem:af664c1da1bfa0bb5f6eb933bc25f757e"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#af664c1da1bfa0bb5f6eb933bc25f757e">openRoot</a> (<a class="el" href="class_ex_fat_volume.html">ExFatVolume</a> *vol)</td></tr>
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<tr class="memitem:af0da96e502485133ca0cff27fa130082"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#af0da96e502485133ca0cff27fa130082">peek</a> ()</td></tr>
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<tr class="memitem:a18a04d1e68a0c1e3e38e5712cd9bbc03"><td class="memItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a18a04d1e68a0c1e3e38e5712cd9bbc03">position</a> ()</td></tr>
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<tr class="memitem:a9759c13e804c01ff9e7e2ac8fbabc5b8"><td class="memTemplParams" colspan="2">template&lt;typename Type &gt; </td></tr>
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<tr class="memitem:a16488d3e0d946f108240b7d6c536c6f4"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a16488d3e0d946f108240b7d6c536c6f4">printModifyDateTime</a> (<a class="el" href="_sys_call_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *pr)</td></tr>
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<tr class="memitem:a249a5d428f303e2a8e7c3ae476e74829"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a249a5d428f303e2a8e7c3ae476e74829">read</a> ()</td></tr>
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<tr class="memitem:a5ae5477efe55179cf07e173c62654313"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a5ae5477efe55179cf07e173c62654313">read</a> (void *buf, size_t count)</td></tr>
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<tr class="memitem:a8e88c8e79551a72cc98310038514c47a"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a8e88c8e79551a72cc98310038514c47a">remove</a> ()</td></tr>
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<tr class="memitem:ad10417a851dba3d40a78eb2c0eb11fff"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#ad10417a851dba3d40a78eb2c0eb11fff">remove</a> (const ExChar_t *path)</td></tr>
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<tr class="memitem:aab50b2646035f76834c75230d2b55c64"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#aab50b2646035f76834c75230d2b55c64">rename</a> (const ExChar_t *newPath)</td></tr>
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<tr class="memitem:aea570a3b6afbe633d874803b137a46b8"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#aea570a3b6afbe633d874803b137a46b8">rename</a> (<a class="el" href="class_ex_fat_file.html">ExFatFile</a> *dirFile, const ExChar_t *newPath)</td></tr>
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<tr class="memitem:a3c1d3ef65284ffb13ed3ceee472adf9a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a3c1d3ef65284ffb13ed3ceee472adf9a">rewind</a> ()</td></tr>
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<tr class="memitem:a91e8cfbde27d6879b4f51d2ceb2a9f06"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a91e8cfbde27d6879b4f51d2ceb2a9f06">rewindDirectory</a> ()</td></tr>
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<tr class="memitem:a0165e0fde12a53e419bd92cd37f9cfed"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a0165e0fde12a53e419bd92cd37f9cfed">rmdir</a> ()</td></tr>
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<tr class="memitem:a2994a71751ed4f137f48b2e9a7d94091"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a2994a71751ed4f137f48b2e9a7d94091">seekEnd</a> (int64_t offset=0)</td></tr>
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<tr class="memitem:a9834c4da2f14c66f4bda26938ebb36f6"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a9834c4da2f14c66f4bda26938ebb36f6">seekSet</a> (uint64_t pos)</td></tr>
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<tr class="memitem:a5813d451e7f7ba57a04d177caffc5a9f"><td class="memItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_stream_file.html#a5813d451e7f7ba57a04d177caffc5a9f">size</a> ()</td></tr>
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<tr class="memitem:a2cb3638069afd2d01b79e5dff1a66f55"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a2cb3638069afd2d01b79e5dff1a66f55">sync</a> ()</td></tr>
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<tr class="memitem:a6d3ab10983e206401ebd5c24a1c46174"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a6d3ab10983e206401ebd5c24a1c46174">timestamp</a> (uint8_t flags, uint16_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second)</td></tr>
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<tr class="memitem:aca37955d3c7cce40f7f9e1ea078e5636"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#aca37955d3c7cce40f7f9e1ea078e5636">truncate</a> ()</td></tr>
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<tr class="memitem:afc8af11ba8e3a830dff1dd5e59446243"><td class="memItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#afc8af11ba8e3a830dff1dd5e59446243">validLength</a> ()</td></tr>
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<tr class="memitem:a6fb2905a5e363554a5118b5d1322cd87"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ex_fat_file.html#a6fb2905a5e363554a5118b5d1322cd87">write</a> (const char *str)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>exFAT file with Arduino Stream. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="a0112cc39b64aac6f1ec47741397a7582"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0112cc39b64aac6f1ec47741397a7582">&#9670;&nbsp;</a></span>available()</h2>

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          <td class="memname">int <a class="el" href="class_stream_file.html">StreamFile</a>&lt; <a class="el" href="class_ex_fat_file.html">ExFatFile</a> , uint64_t  &gt;::available </td>
          <td>(</td>
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<dl class="section return"><dt>Returns</dt><dd>number of bytes available from the current position to EOF or INT_MAX if more than INT_MAX bytes are available. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#adcf47e15b819fe2d6faac2a027ab30f5">&#9670;&nbsp;</a></span>available64()</h2>

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<dl class="section return"><dt>Returns</dt><dd>The number of bytes available from the current position to EOF for normal files. Zero is returned for directory files. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ac2004e7bf328b3edda7d4c3acba2726f">&#9670;&nbsp;</a></span>clearError()</h2>

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<p>Clear all error bits. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#abc0d3863895c17df53930bdfa84cb06f">&#9670;&nbsp;</a></span>clearWriteError()</h2>

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<p>Clear writeError. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a7ba9e04099bdf8fd34220ebfdde72867">&#9670;&nbsp;</a></span>close()</h2>

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<p>Close a file and force cached data and directory information to be written to the storage device.</p>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#add39a8c7f7961321ba647e8da8f3d461">&#9670;&nbsp;</a></span>contiguousRange()</h2>

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<p>Check for contiguous file and return its raw sector range.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[out]</td><td class="paramname">bgnSector</td><td>the first sector address for the file. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">endSector</td><td>the last sector address for the file.</td></tr>
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<p>Parameters may be nullptr.</p>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ab49396aad3f6500aa19f75490dc26719">&#9670;&nbsp;</a></span>curPosition()</h2>

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<dl class="section return"><dt>Returns</dt><dd>The current position for a file or directory. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ada4dde9f2eed36bf556fcf1bd3d28ccf">&#9670;&nbsp;</a></span>dataLength()</h2>

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<dl class="section return"><dt>Returns</dt><dd>Total data length for file. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a5e3baa5d5269c2948cfaf604c42f6a16">&#9670;&nbsp;</a></span>dirIndex()</h2>

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<dl class="section return"><dt>Returns</dt><dd>Directory entry index. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a22a717ddc6d2004c540c67a14264d9dd">&#9670;&nbsp;</a></span>exists()</h2>

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<p>Test for the existence of a file in a directory</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">path</td><td>Path of the file to be tested for.</td></tr>
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<p>The calling instance must be an open directory file.</p>
<p>dirFile.exists("TOFIND.TXT") searches for "TOFIND.TXT" in the directory dirFile.</p>
<dl class="section return"><dt>Returns</dt><dd>true if the file exists else false. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a8614bcbf04b7bbfc70fe36d2fa7f70c1">&#9670;&nbsp;</a></span>fgetpos()</h2>

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          <td class="memname">void ExFatFile::fgetpos </td>
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          <td class="paramtype">fspos_t *&#160;</td>
          <td class="paramname"><em>pos</em></td><td>)</td>
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<p>get position for streams </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">pos</td><td>struct to receive position </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="memtitle"><span class="permalink"><a href="#abc69c9dfc8fdb4ebf9db3bc37c879dc6">&#9670;&nbsp;</a></span>fgets()</h2>

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          <td>(</td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>str</em>, </td>
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          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>num</em>, </td>
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          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>delim</em> = <code><a class="el" href="_stdio_stream_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a></code>&#160;</td>
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          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>Get a string from a file.</p>
<p><a class="el" href="class_ex_fat_file.html#abc69c9dfc8fdb4ebf9db3bc37c879dc6">fgets()</a> reads bytes from a file into the array pointed to by <em>str</em>, until <em>num</em> - 1 bytes are read, or a delimiter is read and transferred to <em>str</em>, or end-of-file is encountered. The string is then terminated with a null byte.</p>
<p><a class="el" href="class_ex_fat_file.html#abc69c9dfc8fdb4ebf9db3bc37c879dc6">fgets()</a> deletes CR, '\r', from the string. This insures only a '\n' terminates the string for Windows text files which use CRLF for newline.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">str</td><td>Pointer to the array where the string is stored. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">num</td><td>Maximum number of characters to be read (including the final null byte). Usually the length of the array <em>str</em> is used. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">delim</td><td>Optional set of delimiters. The default is "\n".</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>For success <a class="el" href="class_ex_fat_file.html#abc69c9dfc8fdb4ebf9db3bc37c879dc6">fgets()</a> returns the length of the string in <em>str</em>. If no data is read, <a class="el" href="class_ex_fat_file.html#abc69c9dfc8fdb4ebf9db3bc37c879dc6">fgets()</a> returns zero for EOF or -1 if an error occurred. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#af2c08909b62b01f3edc4ee0c51ea7435">&#9670;&nbsp;</a></span>fileSize()</h2>

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<dl class="section return"><dt>Returns</dt><dd>The total number of bytes in a file. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a883a36174d7753abbbdb7547e44b1739">&#9670;&nbsp;</a></span>firstSector()</h2>

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<dl class="section return"><dt>Returns</dt><dd>Address of first sector or zero for empty file. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a32f813e659414892a58aa5157fe14f82">&#9670;&nbsp;</a></span>flush()</h2>

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<p>Ensure that any bytes written to the file are saved to the SD card. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#aea1e4d0c0981081774dc3c7cd3c55264">&#9670;&nbsp;</a></span>fsetpos()</h2>

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          <td class="memname">void ExFatFile::fsetpos </td>
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          <td class="paramtype">const fspos_t *&#160;</td>
          <td class="paramname"><em>pos</em></td><td>)</td>
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<p>Set position for streams </p><dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">pos</td><td>struct with value for new position </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a0d935161fde4a3f8d2fcd13140073adc">&#9670;&nbsp;</a></span>getAccessDateTime()</h2>

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          <td class="paramtype">uint16_t *&#160;</td>
          <td class="paramname"><em>pdate</em>, </td>
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          <td></td>
          <td class="paramtype">uint16_t *&#160;</td>
          <td class="paramname"><em>ptime</em>&#160;</td>
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<p>Get a file's access date and time.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[out]</td><td class="paramname">pdate</td><td>Packed date for directory entry. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">ptime</td><td>Packed time for directory entry.</td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a703397b32592631c189a23047cc44c09">&#9670;&nbsp;</a></span>getCreateDateTime()</h2>

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          <td class="paramtype">uint16_t *&#160;</td>
          <td class="paramname"><em>pdate</em>, </td>
        </tr>
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          <td></td>
          <td class="paramtype">uint16_t *&#160;</td>
          <td class="paramname"><em>ptime</em>&#160;</td>
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          <td>)</td>
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<p>Get a file's create date and time.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">pdate</td><td>Packed date for directory entry. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">ptime</td><td>Packed time for directory entry.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ac697224450ca216c60585d25f5f6e310">&#9670;&nbsp;</a></span>getError()</h2>

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<dl class="section return"><dt>Returns</dt><dd>All error bits. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ac0c15cff235937cdfd7860d5fb441728">&#9670;&nbsp;</a></span>getModifyDateTime()</h2>

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          <td class="paramtype">uint16_t *&#160;</td>
          <td class="paramname"><em>pdate</em>, </td>
        </tr>
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          <td></td>
          <td class="paramtype">uint16_t *&#160;</td>
          <td class="paramname"><em>ptime</em>&#160;</td>
        </tr>
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          <td></td>
          <td>)</td>
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<p>Get a file's modify date and time.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">pdate</td><td>Packed date for directory entry. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">ptime</td><td>Packed time for directory entry.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aba93e2c18be9fa4df7e067b7d6ac5906">&#9670;&nbsp;</a></span>getName()</h2>

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          <td class="memname">size_t ExFatFile::getName </td>
          <td>(</td>
          <td class="paramtype">ExChar_t *&#160;</td>
          <td class="paramname"><em>name</em>, </td>
        </tr>
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          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>size</em>&#160;</td>
        </tr>
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          <td></td>
          <td>)</td>
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<p>Get a file's name followed by a zero byte.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">name</td><td>An array of characters for the file's name. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">size</td><td>The size of the array in characters. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the name length. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a01da9896a59671a61f90dd20c3ac5d07">&#9670;&nbsp;</a></span>getWriteError()</h2>

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<dl class="section return"><dt>Returns</dt><dd>value of writeError </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a7a167102bd47b7cf91167b69f8cc57d1">&#9670;&nbsp;</a></span>isContiguous()</h2>

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          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True if the file is contiguous. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad0a3687bd95bed5b216651335e66b500">&#9670;&nbsp;</a></span>isDir()</h2>

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          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True if this is a directory. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a586ad44055eca4c1b2b457299b829d44">&#9670;&nbsp;</a></span>isDirectory()</h2>

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<p>This function reports if the current file is a directory or not. </p><dl class="section return"><dt>Returns</dt><dd>true if the file is a directory. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#af601285f95db8398c140b3927cf9111c">&#9670;&nbsp;</a></span>isFile()</h2>

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          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True if this is a normal file. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ac926285fa4321ebee28fa91beb511eae">&#9670;&nbsp;</a></span>isHidden()</h2>

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          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True if this is a hidden. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a804c34bbe3ebefe2b6c1d77ff8d49a35">&#9670;&nbsp;</a></span>isOpen()</h2>

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          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>true if the file is open. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a9ca137dfba2c7772910f4d2b3fdd9411">&#9670;&nbsp;</a></span>isReadable()</h2>

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          <td class="memname">bool ExFatFile::isReadable </td>
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          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True file is writable. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a14d160bfbfb39717746b93fa2eda5739">&#9670;&nbsp;</a></span>isReadOnly()</h2>

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<dl class="section return"><dt>Returns</dt><dd>True if file is read-only </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad9f8e7afcf749ebcaaf055bd569dc7da">&#9670;&nbsp;</a></span>isRoot()</h2>

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<dl class="section return"><dt>Returns</dt><dd>True if this is the root directory. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad7e02a1db8fb5a90288bb4679e9ddcb9">&#9670;&nbsp;</a></span>isSubDir()</h2>

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          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True if this is a subdirectory. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a04d1c43e80743f8c1a51b64062ce16dd">&#9670;&nbsp;</a></span>isWritable()</h2>

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          <td class="paramname"></td><td>)</td>
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<dl class="section return"><dt>Returns</dt><dd>True file is writable. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aa0e074c891f3db5ea2ebd491667b03a6">&#9670;&nbsp;</a></span>ls() <span class="overload">[1/2]</span></h2>

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          <td class="paramtype"><a class="el" href="_sys_call_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *&#160;</td>
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<p>List directory contents.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>Print stream for list. </td></tr>
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  </dd>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a09f8beb55f939874e93c1df6c8a046d4">&#9670;&nbsp;</a></span>ls() <span class="overload">[2/2]</span></h2>

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          <td>(</td>
          <td class="paramtype"><a class="el" href="_sys_call_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *&#160;</td>
          <td class="paramname"><em>pr</em>, </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>flags</em>, </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>indent</em> = <code>0</code>&#160;</td>
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<p>List directory contents.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>Print stream for list.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">flags</td><td>The inclusive OR of</td></tr>
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<p>LS_DATE - Print file modification date</p>
<p>LS_SIZE - Print file size.</p>
<p>LS_R - Recursive list of subdirectories.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">indent</td><td>Amount of space before file name. Used for recursive list to indicate subdirectory level.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a3a393624d52854e74bf385c9e513a86d">&#9670;&nbsp;</a></span>mkdir()</h2>

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          <td>(</td>
          <td class="paramtype"><a class="el" href="class_ex_fat_file.html">ExFatFile</a> *&#160;</td>
          <td class="paramname"><em>parent</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const ExChar_t *&#160;</td>
          <td class="paramname"><em>path</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bool&#160;</td>
          <td class="paramname"><em>pFlag</em> = <code>true</code>&#160;</td>
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<p>Make a new directory.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">parent</td><td>An open directory file that will contain the new directory.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">path</td><td>A path with a valid name for the new directory.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">pFlag</td><td>Create missing parent directories if true.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a8792c863080576eb65ce6cacbe1dd931">&#9670;&nbsp;</a></span>name()</h2>

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          <td class="memname">const char* <a class="el" href="class_stream_file.html">StreamFile</a>&lt; <a class="el" href="class_ex_fat_file.html">ExFatFile</a> , uint64_t  &gt;::name </td>
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<p>No longer implemented due to Long File Names.</p>
<p>Use <a class="el" href="class_ex_fat_file.html#aba93e2c18be9fa4df7e067b7d6ac5906">getName(char* name, size_t size)</a>. </p><dl class="section return"><dt>Returns</dt><dd>a pointer to replacement suggestion. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ab1e224aba9eb796c7ad48062cc1434c2">&#9670;&nbsp;</a></span>open() <span class="overload">[1/4]</span></h2>

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          <td class="paramname"><em>oflag</em> = <code>0X00</code>&#160;</td>
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<p>Open a file in the current working directory.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">path</td><td>A path with a valid name for a file to be opened.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">oflag</td><td>bitwise-inclusive OR of open flags. See see <a class="el" href="class_ex_fat_file.html#ad0be05c5c7092317089872778052cbd7">ExFatFile::open(ExFatFile*, const char*, uint8_t)</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad0be05c5c7092317089872778052cbd7">&#9670;&nbsp;</a></span>open() <span class="overload">[2/4]</span></h2>

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          <td>(</td>
          <td class="paramtype"><a class="el" href="class_ex_fat_file.html">ExFatFile</a> *&#160;</td>
          <td class="paramname"><em>dirFile</em>, </td>
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          <td class="paramtype">const ExChar_t *&#160;</td>
          <td class="paramname"><em>path</em>, </td>
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          <td class="paramtype">oflag_t&#160;</td>
          <td class="paramname"><em>oflag</em>&#160;</td>
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<p>Open a file or directory by name.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">dirFile</td><td>An open directory containing the file to be opened.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">path</td><td>The path for a file to be opened.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">oflag</td><td>Values for <em>oflag</em> are constructed by a bitwise-inclusive OR of flags from the following list. Only one of O_RDONLY, O_READ, O_WRONLY, O_WRITE, or O_RDWR is allowed.</td></tr>
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<p>O_RDONLY - Open for reading.</p>
<p>O_READ - Same as O_RDONLY.</p>
<p>O_WRONLY - Open for writing.</p>
<p>O_WRITE - Same as O_WRONLY.</p>
<p>O_RDWR - Open for reading and writing.</p>
<p>O_APPEND - If set, the file offset shall be set to the end of the file prior to each write.</p>
<p>O_AT_END - Set the initial position at the end of the file.</p>
<p>O_CREAT - If the file exists, this flag has no effect except as noted under O_EXCL below. Otherwise, the file shall be created</p>
<p>O_EXCL - If O_CREAT and O_EXCL are set, <a class="el" href="class_ex_fat_file.html#ad0be05c5c7092317089872778052cbd7">open()</a> shall fail if the file exists.</p>
<p>O_TRUNC - If the file exists and is a regular file, and the file is successfully opened and is not read only, its length shall be truncated to 0.</p>
<p>WARNING: A given file must not be opened by more than one file object or file corruption may occur.</p>
<dl class="section note"><dt>Note</dt><dd>Directory files must be opened read only. Write and truncation is not allowed for directory files.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a414b64dc30551e05dcc46f04e0f6413a">&#9670;&nbsp;</a></span>open() <span class="overload">[3/4]</span></h2>

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          <td>(</td>
          <td class="paramtype"><a class="el" href="class_ex_fat_file.html">ExFatFile</a> *&#160;</td>
          <td class="paramname"><em>dirFile</em>, </td>
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          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>index</em>, </td>
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          <td class="paramtype">oflag_t&#160;</td>
          <td class="paramname"><em>oflag</em>&#160;</td>
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<p>Open a file by index.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">dirFile</td><td>An open <a class="el" href="class_ex_fat_file.html" title="Basic file class.">ExFatFile</a> instance for the directory.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">index</td><td>The <em>index</em> of the directory entry for the file to be opened. The value for <em>index</em> is (directory file position)/32.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">oflag</td><td>bitwise-inclusive OR of open flags. See see <a class="el" href="class_ex_fat_file.html#ad0be05c5c7092317089872778052cbd7">ExFatFile::open(ExFatFile*, const ExChar_t*, uint8_t)</a>.</td></tr>
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  </dd>
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<p>See <a class="el" href="class_ex_fat_file.html#ad0be05c5c7092317089872778052cbd7">open()</a> by path for definition of flags. </p><dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a825447643e6c9e8284a3ed78e3363788">&#9670;&nbsp;</a></span>open() <span class="overload">[4/4]</span></h2>

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          <td>(</td>
          <td class="paramtype"><a class="el" href="class_ex_fat_volume.html">ExFatVolume</a> *&#160;</td>
          <td class="paramname"><em>vol</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const ExChar_t *&#160;</td>
          <td class="paramname"><em>path</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>oflag</em>&#160;</td>
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          <td>)</td>
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<p>Open a file in the volume working directory.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">vol</td><td>Volume where the file is located.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">path</td><td>with a valid name for a file to be opened.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">oflag</td><td>bitwise-inclusive OR of open flags. See see <a class="el" href="class_ex_fat_file.html#ad0be05c5c7092317089872778052cbd7">open(ExFatFile*, const char*, uint8_t)</a>.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a89b6021cf70b7adb9feb162260d5a101">&#9670;&nbsp;</a></span>openNext()</h2>

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          <td class="paramtype"><a class="el" href="class_ex_fat_file.html">ExFatFile</a> *&#160;</td>
          <td class="paramname"><em>dirFile</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">oflag_t&#160;</td>
          <td class="paramname"><em>oflag</em> = <code>0X00</code>&#160;</td>
        </tr>
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          <td></td>
          <td>)</td>
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        </tr>
      </table>
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<p>Open the next file or subdirectory in a directory.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">dirFile</td><td>An open instance for the directory containing the file to be opened.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">oflag</td><td>bitwise-inclusive OR of open flags. See see <a class="el" href="class_ex_fat_file.html#ad0be05c5c7092317089872778052cbd7">open(ExFatFile*, const char*, uint8_t)</a>.</td></tr>
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</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ada8cd27e9a2f604f5c05088024a46a63">&#9670;&nbsp;</a></span>openNextFile()</h2>

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          <td class="memname"><a class="el" href="class_ex_file.html">ExFile</a> ExFile::openNextFile </td>
          <td>(</td>
          <td class="paramtype">oflag_t&#160;</td>
          <td class="paramname"><em>oflag</em> = <code>0X00</code></td><td>)</td>
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<p>Opens the next file or folder in a directory.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">oflag</td><td>open flags. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>a FatStream object. </dd></dl>

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<a id="af664c1da1bfa0bb5f6eb933bc25f757e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af664c1da1bfa0bb5f6eb933bc25f757e">&#9670;&nbsp;</a></span>openRoot()</h2>

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          <td class="memname">bool ExFatFile::openRoot </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_ex_fat_volume.html">ExFatVolume</a> *&#160;</td>
          <td class="paramname"><em>vol</em></td><td>)</td>
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<p>Open a volume's root directory.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">vol</td><td>The FAT volume containing the root directory to be opened.</td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aa1abbd813f27d488f0ff439ccbc9ca98">&#9670;&nbsp;</a></span>operator bool()</h2>

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<p>The parenthesis operator.</p>
<dl class="section return"><dt>Returns</dt><dd>true if a file is open. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#af0da96e502485133ca0cff27fa130082">&#9670;&nbsp;</a></span>peek()</h2>

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          <td class="memname">int <a class="el" href="class_stream_file.html">StreamFile</a>&lt; <a class="el" href="class_ex_fat_file.html">ExFatFile</a> , uint64_t  &gt;::peek </td>
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<p>Return the next available byte without consuming it.</p>
<dl class="section return"><dt>Returns</dt><dd>The byte if no error and not at eof else -1; </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a18a04d1e68a0c1e3e38e5712cd9bbc03">&#9670;&nbsp;</a></span>position()</h2>

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<dl class="section return"><dt>Returns</dt><dd>the current file position. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a35a5093014e80965e49c84b61780556f">&#9670;&nbsp;</a></span>preAllocate()</h2>

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          <td>(</td>
          <td class="paramtype">uint64_t&#160;</td>
          <td class="paramname"><em>length</em></td><td>)</td>
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<p>Allocate contiguous clusters to an empty file.</p>
<p>The file must be empty with no clusters allocated.</p>
<p>The file will have zero validLength and dataLength will equal the requested length.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">length</td><td>size of allocated space in bytes. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad9ba8aa00b9db683d40fc2989dbe1922">&#9670;&nbsp;</a></span>printAccessDateTime()</h2>

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          <td class="memname">size_t ExFatFile::printAccessDateTime </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="_sys_call_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *&#160;</td>
          <td class="paramname"><em>pr</em></td><td>)</td>
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<p>Print a file's access date and time</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>Print stream for output.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a7318b2d7594d6ba52421c413f5fc35cd">&#9670;&nbsp;</a></span>printCreateDateTime()</h2>

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          <td>(</td>
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          <td class="paramname"><em>pr</em></td><td>)</td>
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<p>Print a file's creation date and time</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>Print stream for output.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a496ac61e367a24665425d54956a46346">&#9670;&nbsp;</a></span>printField() <span class="overload">[1/3]</span></h2>

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          <td>(</td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>value</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">char&#160;</td>
          <td class="paramname"><em>term</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>prec</em> = <code>2</code>&#160;</td>
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<p>Print a number followed by a field terminator. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">value</td><td>The number to be printed. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">term</td><td>The field terminator. Use '\n' for CR LF. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">prec</td><td>Number of digits after decimal point. </td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The number of bytes written or -1 if an error occurs. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a70eda4191df90f608694c1faede7fb33">&#9670;&nbsp;</a></span>printField() <span class="overload">[2/3]</span></h2>

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          <td>(</td>
          <td class="paramtype">float&#160;</td>
          <td class="paramname"><em>value</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">char&#160;</td>
          <td class="paramname"><em>term</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>prec</em> = <code>2</code>&#160;</td>
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<p>Print a number followed by a field terminator. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">value</td><td>The number to be printed. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">term</td><td>The field terminator. Use '\n' for CR LF. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">prec</td><td>Number of digits after decimal point. </td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The number of bytes written or -1 if an error occurs. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a9759c13e804c01ff9e7e2ac8fbabc5b8">&#9670;&nbsp;</a></span>printField() <span class="overload">[3/3]</span></h2>

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          <td class="paramtype">Type&#160;</td>
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          <td class="paramtype">char&#160;</td>
          <td class="paramname"><em>term</em>&#160;</td>
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          <td></td>
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<p>Print a number followed by a field terminator. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">value</td><td>The number to be printed. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">term</td><td>The field terminator. Use '\n' for CR LF. </td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The number of bytes written or -1 if an error occurs. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a16d527f98cff3ffd3ba8bc594a22d186">&#9670;&nbsp;</a></span>printFileSize()</h2>

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          <td>(</td>
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<p>Print a file's size in bytes. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>Prtin stream for the output. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The number of bytes printed. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a16488d3e0d946f108240b7d6c536c6f4">&#9670;&nbsp;</a></span>printModifyDateTime()</h2>

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          <td>(</td>
          <td class="paramtype"><a class="el" href="_sys_call_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *&#160;</td>
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<p>Print a file's modify date and time</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>Print stream for output.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a095c0a865e5e5b6463c3dc0c90680635">&#9670;&nbsp;</a></span>printName()</h2>

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          <td>(</td>
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<p>Print a file's name</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>Print stream for output.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a249a5d428f303e2a8e7c3ae476e74829">&#9670;&nbsp;</a></span>read() <span class="overload">[1/2]</span></h2>

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<p>Read the next byte from a file.</p>
<dl class="section return"><dt>Returns</dt><dd>For success return the next byte in the file as an int. If an error occurs or end of file is reached return -1. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a5ae5477efe55179cf07e173c62654313">&#9670;&nbsp;</a></span>read() <span class="overload">[2/2]</span></h2>

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          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
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          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
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<p>Read data from a file starting at the current position.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[out]</td><td class="paramname">buf</td><td>Pointer to the location that will receive the data.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">count</td><td>Maximum number of bytes to read.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>For success <a class="el" href="class_stream_file.html#a249a5d428f303e2a8e7c3ae476e74829">read()</a> returns the number of bytes read. A value less than <em>nbyte</em>, including zero, will be returned if end of file is reached. If an error occurs, <a class="el" href="class_stream_file.html#a249a5d428f303e2a8e7c3ae476e74829">read()</a> returns -1. </dd></dl>

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<a id="a8e88c8e79551a72cc98310038514c47a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8e88c8e79551a72cc98310038514c47a">&#9670;&nbsp;</a></span>remove() <span class="overload">[1/2]</span></h2>

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<p>Remove a file.</p>
<p>The directory entry and all data for the file are deleted.</p>
<dl class="section note"><dt>Note</dt><dd>This function should not be used to delete the 8.3 version of a file that has a long name. For example if a file has the long name "New Text Document.txt" you should not delete the 8.3 name "NEWTEX~1.TXT".</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad10417a851dba3d40a78eb2c0eb11fff">&#9670;&nbsp;</a></span>remove() <span class="overload">[2/2]</span></h2>

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          <td class="memname">bool ExFatFile::remove </td>
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          <td class="paramtype">const ExChar_t *&#160;</td>
          <td class="paramname"><em>path</em></td><td>)</td>
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<p>Remove a file.</p>
<p>The directory entry and all data for the file are deleted.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">path</td><td>Path for the file to be removed.</td></tr>
  </table>
  </dd>
</dl>
<p>Example use: dirFile.remove(filenameToRemove);</p>
<dl class="section note"><dt>Note</dt><dd>This function should not be used to delete the 8.3 version of a file that has a long name. For example if a file has the long name "New Text Document.txt" you should not delete the 8.3 name "NEWTEX~1.TXT".</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aab50b2646035f76834c75230d2b55c64">&#9670;&nbsp;</a></span>rename() <span class="overload">[1/2]</span></h2>

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          <td class="paramtype">const ExChar_t *&#160;</td>
          <td class="paramname"><em>newPath</em></td><td>)</td>
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<p>Rename a file or subdirectory.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">newPath</td><td>New path name for the file/directory.</td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aea570a3b6afbe633d874803b137a46b8">&#9670;&nbsp;</a></span>rename() <span class="overload">[2/2]</span></h2>

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          <td class="paramtype"><a class="el" href="class_ex_fat_file.html">ExFatFile</a> *&#160;</td>
          <td class="paramname"><em>dirFile</em>, </td>
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          <td class="paramtype">const ExChar_t *&#160;</td>
          <td class="paramname"><em>newPath</em>&#160;</td>
        </tr>
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          <td>)</td>
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<p>Rename a file or subdirectory.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">dirFile</td><td>Directory for the new path. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">newPath</td><td>New path name for the file/directory.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a3c1d3ef65284ffb13ed3ceee472adf9a">&#9670;&nbsp;</a></span>rewind()</h2>

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<p>Set the file's current position to zero. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a91e8cfbde27d6879b4f51d2ceb2a9f06">&#9670;&nbsp;</a></span>rewindDirectory()</h2>

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          <td class="memname">void <a class="el" href="class_stream_file.html">StreamFile</a>&lt; <a class="el" href="class_ex_fat_file.html">ExFatFile</a> , uint64_t  &gt;::rewindDirectory </td>
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<p>Rewind a file if it is a directory </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a0165e0fde12a53e419bd92cd37f9cfed">&#9670;&nbsp;</a></span>rmdir()</h2>

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<p>Remove a directory file.</p>
<p>The directory file will be removed only if it is empty and is not the root directory. <a class="el" href="class_ex_fat_file.html#a0165e0fde12a53e419bd92cd37f9cfed">rmdir()</a> follows DOS and Windows and ignores the read-only attribute for the directory.</p>
<dl class="section note"><dt>Note</dt><dd>This function should not be used to delete the 8.3 version of a directory that has a long name. For example if a directory has the long name "New folder" you should not delete the 8.3 name "NEWFOL~1".</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a773ee6f661fc689a5187f51cb5498086">&#9670;&nbsp;</a></span>seek()</h2>

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          <td>(</td>
          <td class="paramtype">uint64_t&#160;</td>
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<p>Seek to a new position in the file, which must be between 0 and the size of the file (inclusive).</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">pos</td><td>the new file position. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ab42494880cf229adfb0fc8edb0647686">&#9670;&nbsp;</a></span>seekCur()</h2>

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          <td class="paramtype">int64_t&#160;</td>
          <td class="paramname"><em>offset</em></td><td>)</td>
          <td></td>
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<p>Set the files position to current position + <em>pos</em>. See <a class="el" href="class_ex_fat_file.html#a9834c4da2f14c66f4bda26938ebb36f6">seekSet()</a>. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">offset</td><td>The new position in bytes from the current position. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a2994a71751ed4f137f48b2e9a7d94091">&#9670;&nbsp;</a></span>seekEnd()</h2>

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          <td class="paramtype">int64_t&#160;</td>
          <td class="paramname"><em>offset</em> = <code>0</code></td><td>)</td>
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<p>Set the files position to end-of-file + <em>offset</em>. See <a class="el" href="class_ex_fat_file.html#a9834c4da2f14c66f4bda26938ebb36f6">seekSet()</a>. Can't be used for directory files since file size is not defined. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">offset</td><td>The new position in bytes from end-of-file. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a9834c4da2f14c66f4bda26938ebb36f6">&#9670;&nbsp;</a></span>seekSet()</h2>

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          <td class="paramtype">uint64_t&#160;</td>
          <td class="paramname"><em>pos</em></td><td>)</td>
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<p>Sets a file's position.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">pos</td><td>The new position in bytes from the beginning of the file.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a5813d451e7f7ba57a04d177caffc5a9f">&#9670;&nbsp;</a></span>size()</h2>

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<dl class="section return"><dt>Returns</dt><dd>the file's size. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a2cb3638069afd2d01b79e5dff1a66f55">&#9670;&nbsp;</a></span>sync()</h2>

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<p>The <a class="el" href="class_ex_fat_file.html#a2cb3638069afd2d01b79e5dff1a66f55">sync()</a> call causes all modified data and directory fields to be written to the storage device.</p>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a6d3ab10983e206401ebd5c24a1c46174">&#9670;&nbsp;</a></span>timestamp()</h2>

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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>flags</em>, </td>
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          <td class="paramtype">uint16_t&#160;</td>
          <td class="paramname"><em>year</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>month</em>, </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>day</em>, </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>hour</em>, </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>minute</em>, </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>second</em>&#160;</td>
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          <td>)</td>
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<p>Truncate a file at the current file position.</p>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. Set a file's timestamps in its directory entry.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">flags</td><td>Values for <em>flags</em> are constructed by a bitwise-inclusive OR of flags from the following list</td></tr>
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  </dd>
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<p>T_ACCESS - Set the file's last access date and time.</p>
<p>T_CREATE - Set the file's creation date and time.</p>
<p>T_WRITE - Set the file's last write/modification date and time.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">year</td><td>Valid range 1980 - 2107 inclusive.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">month</td><td>Valid range 1 - 12 inclusive.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">day</td><td>Valid range 1 - 31 inclusive.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">hour</td><td>Valid range 0 - 23 inclusive.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">minute</td><td>Valid range 0 - 59 inclusive.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">second</td><td>Valid range 0 - 59 inclusive</td></tr>
  </table>
  </dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>It is possible to set an invalid date since there is no check for the number of days in a month.</dd>
<dd>
Modify and access timestamps may be overwritten if a date time callback function has been set by dateTimeCallback().</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aca37955d3c7cce40f7f9e1ea078e5636">&#9670;&nbsp;</a></span>truncate() <span class="overload">[1/2]</span></h2>

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<p>Truncate a file at the current file position. will be maintained if it is less than or equal to <em>length</em> otherwise it will be set to end of file.</p>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<a id="a6262b0d6d43d2a426953a0a7d90f624f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6262b0d6d43d2a426953a0a7d90f624f">&#9670;&nbsp;</a></span>truncate() <span class="overload">[2/2]</span></h2>

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          <td class="memname">bool ExFatFile::truncate </td>
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          <td class="paramtype">uint64_t&#160;</td>
          <td class="paramname"><em>length</em></td><td>)</td>
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<p>Truncate a file to a specified length. The current file position will be set to end of file.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">length</td><td>The desired length for the file.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>

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<a id="afc8af11ba8e3a830dff1dd5e59446243"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afc8af11ba8e3a830dff1dd5e59446243">&#9670;&nbsp;</a></span>validLength()</h2>

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          <td class="memname">uint64_t ExFatFile::validLength </td>
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<dl class="section return"><dt>Returns</dt><dd>The valid number of bytes in a file. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a6fb2905a5e363554a5118b5d1322cd87">&#9670;&nbsp;</a></span>write() <span class="overload">[1/4]</span></h2>

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          <td class="memname">size_t ExFatFile::write </td>
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          <td class="paramtype">const char *&#160;</td>
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<p>Write a string to a file. Used by the Arduino Print class. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">str</td><td>Pointer to the string. Use getWriteError to check for errors. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>count of characters written for success or -1 for failure. </dd></dl>

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<a id="a0ace3aaaf6d0fb673a43059c0664fab6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0ace3aaaf6d0fb673a43059c0664fab6">&#9670;&nbsp;</a></span>write() <span class="overload">[2/4]</span></h2>

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          <td class="memname">size_t <a class="el" href="class_stream_file.html">StreamFile</a>&lt; <a class="el" href="class_ex_fat_file.html">ExFatFile</a> , uint64_t  &gt;::write </td>
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<p>Write data to an open file.</p>
<dl class="section note"><dt>Note</dt><dd>Data is moved to the cache but may not be written to the storage device until <a class="el" href="class_ex_fat_file.html#a2cb3638069afd2d01b79e5dff1a66f55">sync()</a> is called.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">buffer</td><td>Pointer to the location of the data to be written.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">size</td><td>Number of bytes to write.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>For success <a class="el" href="class_stream_file.html#a0695220134825199b39dee82f18ab1ec">write()</a> returns the number of bytes written, always <em>size</em>. </dd></dl>

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<a id="abc1423c7b550614d1067e7173f8b46a8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abc1423c7b550614d1067e7173f8b46a8">&#9670;&nbsp;</a></span>write() <span class="overload">[3/4]</span></h2>

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          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
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<p>Write data to an open file.</p>
<dl class="section note"><dt>Note</dt><dd>Data is moved to the cache but may not be written to the storage device until <a class="el" href="class_ex_fat_file.html#a2cb3638069afd2d01b79e5dff1a66f55">sync()</a> is called.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">buf</td><td>Pointer to the location of the data to be written.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">count</td><td>Number of bytes to write.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>For success <a class="el" href="class_stream_file.html#a0695220134825199b39dee82f18ab1ec">write()</a> returns the number of bytes written, always <em>count</em>. </dd></dl>

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<a id="a0695220134825199b39dee82f18ab1ec"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0695220134825199b39dee82f18ab1ec">&#9670;&nbsp;</a></span>write() <span class="overload">[4/4]</span></h2>

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          <td class="memname">size_t <a class="el" href="class_stream_file.html">StreamFile</a>&lt; <a class="el" href="class_ex_fat_file.html">ExFatFile</a> , uint64_t  &gt;::write </td>
          <td>(</td>
          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>b</em></td><td>)</td>
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<p>Write a byte to a file. Required by the Arduino Print class. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">b</td><td>the byte to be written. Use getWriteError to check for errors. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>1 for success and 0 for failure. </dd></dl>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>Arduino/libraries/SdFat/src/ExFatLib/<a class="el" href="_ex_fat_file_8h.html">ExFatFile.h</a></li>
</ul>
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