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<p>Functions for working with iCal periods (of time).
<a href="#details">More...</a></p>
<p><a href="icalperiod_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structicalperiodtype.html">icalperiodtype</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Struct to represent a period in time. <a href="structicalperiodtype.html#details">More...</a><br /></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ac84e7fc00fa25286c1f109eb35a10883"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="icalperiod_8h.html#ac84e7fc00fa25286c1f109eb35a10883">icalperiodtype_as_ical_string</a> (struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> p)</td></tr>
<tr class="memdesc:ac84e7fc00fa25286c1f109eb35a10883"><td class="mdescLeft"> </td><td class="mdescRight">Converts an <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> into an iCal-formatted string. <a href="#ac84e7fc00fa25286c1f109eb35a10883">More...</a><br /></td></tr>
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<tr class="memitem:ac71be7790d778145a59ad9626458ccd5"><td class="memItemLeft" align="right" valign="top">char * </td><td class="memItemRight" valign="bottom"><a class="el" href="icalperiod_8h.html#ac71be7790d778145a59ad9626458ccd5">icalperiodtype_as_ical_string_r</a> (struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> p)</td></tr>
<tr class="memdesc:ac71be7790d778145a59ad9626458ccd5"><td class="mdescLeft"> </td><td class="mdescRight">Converts an <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> into an iCal-formatted string. <a href="#ac71be7790d778145a59ad9626458ccd5">More...</a><br /></td></tr>
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<tr class="memitem:a827e35abf4d6349e15aeaa9a483064fd"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="icalperiod_8h.html#a827e35abf4d6349e15aeaa9a483064fd">icalperiodtype_from_string</a> (const char *str)</td></tr>
<tr class="memdesc:a827e35abf4d6349e15aeaa9a483064fd"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a new <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> from <em>str</em>. <a href="#a827e35abf4d6349e15aeaa9a483064fd">More...</a><br /></td></tr>
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<tr class="memitem:ae184bb1351602b7763044c5167a96bdf"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="icalperiod_8h.html#ae184bb1351602b7763044c5167a96bdf">icalperiodtype_is_null_period</a> (struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> p)</td></tr>
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<tr class="memitem:af7feaf12370cd37d66d160c4d8fbf0c7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="icalperiod_8h.html#af7feaf12370cd37d66d160c4d8fbf0c7">icalperiodtype_is_valid_period</a> (struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> p)</td></tr>
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<tr class="memitem:a60e59a9f46a1efa9885829a4d23eddfa"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="icalperiod_8h.html#a60e59a9f46a1efa9885829a4d23eddfa">icalperiodtype_null_period</a> (void)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Functions for working with iCal periods (of time). </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="ac84e7fc00fa25286c1f109eb35a10883"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac84e7fc00fa25286c1f109eb35a10883">◆ </a></span>icalperiodtype_as_ical_string()</h2>
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<td class="memname">const char* icalperiodtype_as_ical_string </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> </td>
<td class="paramname"><em>p</em></td><td>)</td>
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<p>Converts an <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> into an iCal-formatted string. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>The time period to convert </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>A string representing the iCal-formatted period </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="icalperiod_8h.html#ac71be7790d778145a59ad9626458ccd5" title="Converts an icalperiodtype into an iCal-formatted string.">icalperiodtype_as_ical_string_r()</a></dd></dl>
<dl class="section user"><dt>Error handling</dt><dd>Sets <a class="el" href="icalerror_8h.html#ad2562706150f5c5a4d9b0ca149d78e37" title="Access the current icalerrno value.">icalerrno</a> to <a class="el" href="icalerror_8h.html#a601c122fcea522513b1b7732fa23e833a3ed4d866c28acaaaf99348b1ab27cd78">ICAL_ALLOCATION_ERROR</a> if there was an internal error allocating memory.</dd></dl>
<dl class="section user"><dt>Ownership</dt><dd>The string returned by this method is owned by libical and must not be <code>free()</code> by the caller.</dd></dl>
<p>### Example </p><div class="fragment"><div class="line"><span class="comment">// create icalperiodtype</span></div><div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *period_string = <span class="stringliteral">"20170606T090000/20170607T090000"</span>;</div><div class="line"><span class="keyword">struct </span><a class="code" href="structicalperiodtype.html">icalperiodtype</a> period = <a class="code" href="icalperiod_8h.html#a827e35abf4d6349e15aeaa9a483064fd">icalperiodtype_from_string</a>(period_string);</div><div class="line"></div><div class="line"><span class="comment">// print period in iCal format</span></div><div class="line">printf(<span class="stringliteral">"%s\n"</span>, <a class="code" href="icalperiod_8h.html#ac84e7fc00fa25286c1f109eb35a10883">icalperiodtype_as_ical_string</a>(period));</div></div><!-- fragment -->
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<a id="ac71be7790d778145a59ad9626458ccd5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac71be7790d778145a59ad9626458ccd5">◆ </a></span>icalperiodtype_as_ical_string_r()</h2>
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<td class="memname">char* icalperiodtype_as_ical_string_r </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> </td>
<td class="paramname"><em>p</em></td><td>)</td>
<td></td>
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<p>Converts an <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> into an iCal-formatted string. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>The time period to convert </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>A string representing the iCal-formatted period </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="icalperiod_8h.html#ac84e7fc00fa25286c1f109eb35a10883" title="Converts an icalperiodtype into an iCal-formatted string.">icalperiodtype_as_ical_string()</a></dd></dl>
<dl class="section user"><dt>Error handling</dt><dd>Sets <a class="el" href="icalerror_8h.html#ad2562706150f5c5a4d9b0ca149d78e37" title="Access the current icalerrno value.">icalerrno</a> to <a class="el" href="icalerror_8h.html#a601c122fcea522513b1b7732fa23e833a3ed4d866c28acaaaf99348b1ab27cd78">ICAL_ALLOCATION_ERROR</a> if there was an internal error allocating memory.</dd></dl>
<dl class="section user"><dt>Ownership</dt><dd>The string returned by this method is owned by the caller and must be released with the appropriate function after use.</dd></dl>
<p>### Example </p><div class="fragment"><div class="line"><span class="comment">// create icalperiodtype</span></div><div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *period_string = <span class="stringliteral">"20170606T090000/20170607T090000"</span>;</div><div class="line"><span class="keyword">struct </span><a class="code" href="structicalperiodtype.html">icalperiodtype</a> period = <a class="code" href="icalperiod_8h.html#a827e35abf4d6349e15aeaa9a483064fd">icalperiodtype_from_string</a>(period_string);</div><div class="line"></div><div class="line"><span class="comment">// print period in iCal format</span></div><div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *period_string_gen = <a class="code" href="icalperiod_8h.html#ac71be7790d778145a59ad9626458ccd5">icalperiodtype_as_ical_string_r</a>(period);</div><div class="line">printf(<span class="stringliteral">"%s\n"</span>, period_string_gen);</div><div class="line"><a class="code" href="icalmemory_8c.html#a2f164cb87c67f06b5dc04a5f21384879">icalmemory_free_buffer</a>(period_string_gen);</div></div><!-- fragment -->
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<a id="a827e35abf4d6349e15aeaa9a483064fd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a827e35abf4d6349e15aeaa9a483064fd">◆ </a></span>icalperiodtype_from_string()</h2>
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<td class="memname">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> icalperiodtype_from_string </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>str</em></td><td>)</td>
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<p>Constructs a new <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> from <em>str</em>. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">str</td><td>The string from which to construct a time period </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>An <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> representing the peroid <em>str</em> </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="icaltime_8h.html#a1b66b9f52a9823b95e4cd33f9dd9b8e5" title="Contructor.">icaltime_from_string()</a>, <a class="el" href="icalduration_8h.html#a0d6d8cc773e19242448eaffb1368fef4" title="Creates a new icaldurationtype from a duration given as a string.">icaldurationtype_from_string()</a></dd></dl>
<dl class="section user"><dt>Error handling</dt><dd>If <em>str</em> is not properly formatted, it sets <a class="el" href="icalerror_8h.html#ad2562706150f5c5a4d9b0ca149d78e37" title="Access the current icalerrno value.">icalerrno</a> to <a class="el" href="icalerror_8h.html#a601c122fcea522513b1b7732fa23e833a6ba07679ac440358c3090a351d27f0d8">ICAL_MALFORMEDDATA_ERROR</a> and returns <a class="el" href="icalperiod_8h.html#a60e59a9f46a1efa9885829a4d23eddfa">icalperiodtype_null_period()</a>.</dd></dl>
<h3>Data format</h3>
<p>There are two ways to specify a duration; either a start time and an end time can be specified, or a start time and a duration. The format for there is as such:</p><ul>
<li><code><STARTTIME>/<ENDTIME></code></li>
<li><code><STARTTIME>/<DURATION></code></li>
</ul>
<p>The format for the times is the same as those used by <a class="el" href="icaltime_8h.html#a1b66b9f52a9823b95e4cd33f9dd9b8e5" title="Contructor.">icaltime_from_string()</a>, and the format for the duration is the same as that used by <a class="el" href="icalduration_8h.html#a0d6d8cc773e19242448eaffb1368fef4" title="Creates a new icaldurationtype from a duration given as a string.">icaldurationtype_from_string()</a>.</p>
<p>### Usage </p><div class="fragment"><div class="line"><span class="comment">// create icalperiodtype</span></div><div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *period_string = <span class="stringliteral">"20170606T090000/20170607T090000"</span>;</div><div class="line"><span class="keyword">struct </span><a class="code" href="structicalperiodtype.html">icalperiodtype</a> period = <a class="code" href="icalperiod_8h.html#a827e35abf4d6349e15aeaa9a483064fd">icalperiodtype_from_string</a>(period_string);</div><div class="line"></div><div class="line"><span class="comment">// print period in iCal format</span></div><div class="line">printf(<span class="stringliteral">"%s\n"</span>, <a class="code" href="icalperiod_8h.html#ac84e7fc00fa25286c1f109eb35a10883">icalperiodtype_as_ical_string</a>(period));</div></div><!-- fragment -->
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<h2 class="memtitle"><span class="permalink"><a href="#ae184bb1351602b7763044c5167a96bdf">◆ </a></span>icalperiodtype_is_null_period()</h2>
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<td class="memname">int icalperiodtype_is_null_period </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> </td>
<td class="paramname"><em>p</em></td><td>)</td>
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<p>Checks if a given <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> is a null period. </p><dl class="section return"><dt>Returns</dt><dd>1 if <em>p</em> is a null period, 0 otherwise </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="icalperiod_8h.html#a60e59a9f46a1efa9885829a4d23eddfa">icalperiodtype_null_period()</a></dd></dl>
<p>### Usage </p><div class="fragment"><div class="line"><span class="comment">// creates null period</span></div><div class="line"><span class="keyword">struct </span><a class="code" href="structicalperiodtype.html">icalperiodtype</a> period = <a class="code" href="icalperiod_8h.html#a60e59a9f46a1efa9885829a4d23eddfa">icalperiodtype_null_period</a>();</div><div class="line"></div><div class="line"><span class="comment">// checks if it's a null period</span></div><div class="line">assert(<a class="code" href="icalperiod_8h.html#ae184bb1351602b7763044c5167a96bdf">icalperiodtype_is_null_period</a>(period));</div></div><!-- fragment -->
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<h2 class="memtitle"><span class="permalink"><a href="#af7feaf12370cd37d66d160c4d8fbf0c7">◆ </a></span>icalperiodtype_is_valid_period()</h2>
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<td>(</td>
<td class="paramtype">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> </td>
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<p>Checks if a given <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> is a valid period. </p><dl class="section return"><dt>Returns</dt><dd>1 if <em>p</em> is a valid period, 0 otherwise</dd></dl>
<p>### Usage </p><div class="fragment"><div class="line"><span class="comment">// creates null period</span></div><div class="line"><span class="keyword">struct </span><a class="code" href="structicalperiodtype.html">icalperiodtype</a> period = <a class="code" href="icalperiod_8h.html#a60e59a9f46a1efa9885829a4d23eddfa">icalperiodtype_null_period</a>();</div><div class="line"></div><div class="line"><span class="comment">// a null period isn't a valid period</span></div><div class="line">assert(<a class="code" href="icalperiod_8h.html#af7feaf12370cd37d66d160c4d8fbf0c7">icalperiodtype_is_valid_period</a>(period) == 0);</div></div><!-- fragment -->
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<h2 class="memtitle"><span class="permalink"><a href="#a60e59a9f46a1efa9885829a4d23eddfa">◆ </a></span>icalperiodtype_null_period()</h2>
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<td class="memname">struct <a class="el" href="structicalperiodtype.html">icalperiodtype</a> icalperiodtype_null_period </td>
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<p>Creates a null period <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a>. </p><dl class="section return"><dt>Returns</dt><dd>An <a class="el" href="structicalperiodtype.html" title="Struct to represent a period in time.">icalperiodtype</a> representing a null period </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="icalperiod_8h.html#ae184bb1351602b7763044c5167a96bdf">icalperiodtype_is_null_period()</a></dd></dl>
<p>### Usage </p><div class="fragment"><div class="line"><span class="comment">// creates null period</span></div><div class="line"><span class="keyword">struct </span><a class="code" href="structicalperiodtype.html">icalperiodtype</a> period = <a class="code" href="icalperiod_8h.html#a60e59a9f46a1efa9885829a4d23eddfa">icalperiodtype_null_period</a>();</div><div class="line"></div><div class="line"><span class="comment">// verifies start, end and length</span></div><div class="line">assert(<a class="code" href="icaltime_8h.html#a97483d9daf2fc8f8b1bbdc0c75ced095">icaltime_is_null_time</a>(period.start));</div><div class="line">assert(<a class="code" href="icaltime_8h.html#a97483d9daf2fc8f8b1bbdc0c75ced095">icaltime_is_null_time</a>(period.end));</div><div class="line">assert(icaldurationtype_is_null_duratino(period.duration));</div></div><!-- fragment -->
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