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<div class="title">ERF_EpochTime.H</div>  </div>
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<a href="ERF__EpochTime_8H.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#ifndef ERF_EPOCH_TIME_H_</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#define ERF_EPOCH_TIME_H_</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160; </div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &lt;sstream&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#include &lt;iomanip&gt;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#include &lt;ctime&gt;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160; </div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#ifdef _WIN32</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#define timegm _mkgmtime</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;AMREX_FORCE_INLINE</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;std::time_t</div>
<div class="line"><a name="l00015"></a><span class="lineno"><a class="line" href="ERF__EpochTime_8H.html#a370a1cca0113b3529a59c031ff71ffb8">   15</a></span>&#160;<a class="code" href="ERF__EpochTime_8H.html#a370a1cca0113b3529a59c031ff71ffb8">getEpochTime</a> (<span class="keyword">const</span> std::string&amp; dateTime, <span class="keyword">const</span> std::string&amp; dateTimeFormat)</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;{</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;    <span class="comment">// Create a tm object to store the parsed date and time.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;    std::tm tmTime;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    <span class="comment">// Create a stream which we will use to parse the string,</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="comment">// which we provide to constructor of stream to fill the buffer.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    std::istringstream ss{ dateTime };</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160; </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    <span class="comment">// Now we read from buffer using get_time manipulator</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    <span class="comment">// and formatting the input appropriately.</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    ss &gt;&gt; std::get_time(&amp;tmTime, dateTimeFormat.c_str());</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160; </div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    <span class="comment">// Convert the tm structure to time_t value and return.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="comment">// Here we use timegm since the output should be relative to UTC.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keyword">auto</span> epoch = timegm(&amp;tmTime);</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    <span class="comment">// Print() &lt;&lt; &quot;Time Stamp: &quot;&lt;&lt; std::put_time(&amp;tmTime, &quot;%c&quot;)</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="comment">//         &lt;&lt; &quot; , Epoch: &quot; &lt;&lt; epoch &lt;&lt; std::endl;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <span class="keywordflow">return</span> epoch;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;}</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;AMREX_FORCE_INLINE</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;std::string</div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="ERF__EpochTime_8H.html#aacf5892cc74a8dbd2ae4af27af5b4e6e">   39</a></span>&#160;<a class="code" href="ERF__EpochTime_8H.html#aacf5892cc74a8dbd2ae4af27af5b4e6e">getTimestamp</a> (<span class="keyword">const</span> amrex::Real epoch_real, <span class="keyword">const</span> std::string&amp; datetime_format)</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;{</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <span class="keyword">auto</span> epoch_nearest_sec = <span class="keyword">static_cast&lt;</span>std::time_t<span class="keyword">&gt;</span>(epoch_real);</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    std::tm *time_info = std::gmtime(&amp;epoch_nearest_sec);</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordtype">char</span> buffer[80];</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    std::strftime(buffer, <span class="keyword">sizeof</span>(buffer), datetime_format.c_str(), time_info);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    std::string str_nearest_sec(buffer);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    <span class="keywordtype">double</span> frac_sec = epoch_real - epoch_nearest_sec;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    snprintf(buffer, 80, <span class="stringliteral">&quot;%.6f&quot;</span>, frac_sec);</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    AMREX_ASSERT(buffer[0] == <span class="charliteral">&#39;0&#39;</span>);</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    std::string str_frac_sec(buffer);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="keywordflow">return</span> str_nearest_sec + str_frac_sec.substr(1);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;}</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="aERF__EpochTime_8H_html_a370a1cca0113b3529a59c031ff71ffb8"><div class="ttname"><a href="ERF__EpochTime_8H.html#a370a1cca0113b3529a59c031ff71ffb8">getEpochTime</a></div><div class="ttdeci">AMREX_FORCE_INLINE std::time_t getEpochTime(const std::string &amp;dateTime, const std::string &amp;dateTimeFormat)</div><div class="ttdef"><b>Definition:</b> ERF_EpochTime.H:15</div></div>
<div class="ttc" id="aERF__EpochTime_8H_html_aacf5892cc74a8dbd2ae4af27af5b4e6e"><div class="ttname"><a href="ERF__EpochTime_8H.html#aacf5892cc74a8dbd2ae4af27af5b4e6e">getTimestamp</a></div><div class="ttdeci">AMREX_FORCE_INLINE std::string getTimestamp(const amrex::Real epoch_real, const std::string &amp;datetime_format)</div><div class="ttdef"><b>Definition:</b> ERF_EpochTime.H:39</div></div>
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