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<li class="navelem"><a class="el" href="dir_bdd9a5d540de89e9fe90efdfc6973a4f.html">common</a></li><li class="navelem"><a class="el" href="dir_f59c6450ff718ff1b085cfd1c36acbd7.html">unicode</a></li> </ul>
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<div class="title">ucnvsel.h File Reference</div> </div>
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<p>C API: Encoding/charset encoding selector.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include "<a class="el" href="utypes_8h_source.html">unicode/utypes.h</a>"</code><br />
<code>#include "<a class="el" href="uset_8h_source.html">unicode/uset.h</a>"</code><br />
<code>#include "<a class="el" href="utf16_8h_source.html">unicode/utf16.h</a>"</code><br />
<code>#include "<a class="el" href="uenum_8h_source.html">unicode/uenum.h</a>"</code><br />
<code>#include "<a class="el" href="ucnv_8h_source.html">unicode/ucnv.h</a>"</code><br />
<code>#include "<a class="el" href="localpointer_8h_source.html">unicode/localpointer.h</a>"</code><br />
</div>
<p><a href="ucnvsel_8h_source.html">Go to the source code of this file.</a></p>
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<tr class="memdesc:namespaceicu"><td class="mdescLeft"> </td><td class="mdescRight">File <a class="el" href="coll_8h.html" title="C++ API: Collation Service. ">coll.h</a>. <br /></td></tr>
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Typedefs</h2></td></tr>
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typedef struct <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a></td></tr>
<tr class="memdesc:a4bc48420c52373dc8016be5391bcc723"><td class="mdescLeft"> </td><td class="mdescRight">Typedef for selector data structure. <br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a74b843fb6d932c6fb4498e52ee00cbfd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a74b843fb6d932c6fb4498e52ee00cbfd">ucnvsel_open</a> (const char *const *converterList, int32_t converterListSize, const <a class="el" href="uset_8h.html#adce3fef7c15d7c78196bf977ac96ec9c">USet</a> *excludedCodePoints, const <a class="el" href="ucnv_8h.html#a402221896b6d7153b14a5ff8dadde806">UConverterUnicodeSet</a> whichSet, <a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> *status)</td></tr>
<tr class="memdesc:a74b843fb6d932c6fb4498e52ee00cbfd"><td class="mdescLeft"> </td><td class="mdescRight">Open a selector. <a href="#a74b843fb6d932c6fb4498e52ee00cbfd">More...</a><br /></td></tr>
<tr class="separator:a74b843fb6d932c6fb4498e52ee00cbfd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aefb8c36821f227c1c769d608ed2700e6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> void </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#aefb8c36821f227c1c769d608ed2700e6">ucnvsel_close</a> (<a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> *sel)</td></tr>
<tr class="memdesc:aefb8c36821f227c1c769d608ed2700e6"><td class="mdescLeft"> </td><td class="mdescRight">Closes a selector. <a href="#aefb8c36821f227c1c769d608ed2700e6">More...</a><br /></td></tr>
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<tr class="memitem:aec02d3fa82a067bdbb20faee4b238880"><td class="memItemLeft" align="right" valign="top"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#aec02d3fa82a067bdbb20faee4b238880">ucnvsel_openFromSerialized</a> (const void *buffer, int32_t length, <a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> *status)</td></tr>
<tr class="memdesc:aec02d3fa82a067bdbb20faee4b238880"><td class="mdescLeft"> </td><td class="mdescRight">Open a selector from its serialized form. <a href="#aec02d3fa82a067bdbb20faee4b238880">More...</a><br /></td></tr>
<tr class="separator:aec02d3fa82a067bdbb20faee4b238880"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a357adbf8e9d25dc643d699406eee31da"><td class="memItemLeft" align="right" valign="top"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a357adbf8e9d25dc643d699406eee31da">ucnvsel_serialize</a> (const <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> *sel, void *buffer, int32_t bufferCapacity, <a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> *status)</td></tr>
<tr class="memdesc:a357adbf8e9d25dc643d699406eee31da"><td class="mdescLeft"> </td><td class="mdescRight">Serialize a selector into a linear buffer. <a href="#a357adbf8e9d25dc643d699406eee31da">More...</a><br /></td></tr>
<tr class="separator:a357adbf8e9d25dc643d699406eee31da"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a23bf32b0d75fca029e6c6c4cdefe3bed"><td class="memItemLeft" align="right" valign="top"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a23bf32b0d75fca029e6c6c4cdefe3bed">ucnvsel_selectForString</a> (const <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> *sel, const <a class="el" href="umachine_8h.html#a6bb9fad572d65b305324ef288165e2ac">UChar</a> *s, int32_t length, <a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> *status)</td></tr>
<tr class="memdesc:a23bf32b0d75fca029e6c6c4cdefe3bed"><td class="mdescLeft"> </td><td class="mdescRight">Select converters that can map all characters in a UTF-16 string, ignoring the excluded code points. <a href="#a23bf32b0d75fca029e6c6c4cdefe3bed">More...</a><br /></td></tr>
<tr class="separator:a23bf32b0d75fca029e6c6c4cdefe3bed"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a467365bf0bb7b6989a1777f31251d139"><td class="memItemLeft" align="right" valign="top"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a467365bf0bb7b6989a1777f31251d139">ucnvsel_selectForUTF8</a> (const <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> *sel, const char *s, int32_t length, <a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> *status)</td></tr>
<tr class="memdesc:a467365bf0bb7b6989a1777f31251d139"><td class="mdescLeft"> </td><td class="mdescRight">Select converters that can map all characters in a UTF-8 string, ignoring the excluded code points. <a href="#a467365bf0bb7b6989a1777f31251d139">More...</a><br /></td></tr>
<tr class="separator:a467365bf0bb7b6989a1777f31251d139"><td class="memSeparator" colspan="2"> </td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>C API: Encoding/charset encoding selector. </p>
<p>A converter selector is built with a set of encoding/charset names and given an input string returns the set of names of the corresponding converters which can convert the string.</p>
<p>A converter selector can be serialized into a buffer and reopened from the serialized form. </p>
<p class="definition">Definition in file <a class="el" href="ucnvsel_8h_source.html">ucnvsel.h</a>.</p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="aefb8c36821f227c1c769d608ed2700e6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aefb8c36821f227c1c769d608ed2700e6">◆ </a></span>ucnvsel_close()</h2>
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<td class="memname"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> void ucnvsel_close </td>
<td>(</td>
<td class="paramtype"><a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> * </td>
<td class="paramname"><em>sel</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Closes a selector. </p>
<p>If any Enumerations were returned by ucnv_select*, they become invalid. They can be closed before or after calling ucnv_closeSelector, but should never be used after the selector is closed.</p>
<dl class="section see"><dt>See also</dt><dd>ucnv_selectForString </dd>
<dd>
ucnv_selectForUTF8</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sel</td><td>selector to close</td></tr>
</table>
</dd>
</dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable002034">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
</div>
</div>
<a id="a74b843fb6d932c6fb4498e52ee00cbfd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a74b843fb6d932c6fb4498e52ee00cbfd">◆ </a></span>ucnvsel_open()</h2>
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<td class="memname"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a>* ucnvsel_open </td>
<td>(</td>
<td class="paramtype">const char *const * </td>
<td class="paramname"><em>converterList</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int32_t </td>
<td class="paramname"><em>converterListSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="uset_8h.html#adce3fef7c15d7c78196bf977ac96ec9c">USet</a> * </td>
<td class="paramname"><em>excludedCodePoints</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="ucnv_8h.html#a402221896b6d7153b14a5ff8dadde806">UConverterUnicodeSet</a> </td>
<td class="paramname"><em>whichSet</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> * </td>
<td class="paramname"><em>status</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Open a selector. </p>
<p>If converterListSize is 0, build for all available converters. If excludedCodePoints is NULL, don't exclude any code points.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">converterList</td><td>a pointer to encoding names needed to be involved. Can be NULL if converterListSize==0. The list and the names will be cloned, and the caller retains ownership of the original. </td></tr>
<tr><td class="paramname">converterListSize</td><td>number of encodings in above list. If 0, builds a selector for all available converters. </td></tr>
<tr><td class="paramname">excludedCodePoints</td><td>a set of code points to be excluded from consideration. That is, excluded code points in a string do not change the selection result. (They might be handled by a callback.) Use NULL to exclude nothing. </td></tr>
<tr><td class="paramname">whichSet</td><td>what converter set to use? Use this to determine whether to consider only roundtrip mappings or also fallbacks. </td></tr>
<tr><td class="paramname">status</td><td>an in/out ICU UErrorCode </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the new selector</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable002033">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
</div>
</div>
<a id="aec02d3fa82a067bdbb20faee4b238880"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aec02d3fa82a067bdbb20faee4b238880">◆ </a></span>ucnvsel_openFromSerialized()</h2>
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<td class="memname"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a>* ucnvsel_openFromSerialized </td>
<td>(</td>
<td class="paramtype">const void * </td>
<td class="paramname"><em>buffer</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int32_t </td>
<td class="paramname"><em>length</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> * </td>
<td class="paramname"><em>status</em> </td>
</tr>
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<td>)</td>
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<p>Open a selector from its serialized form. </p>
<p>The buffer must remain valid and unchanged for the lifetime of the selector. This is much faster than creating a selector from scratch. Using a serialized form from a different machine (endianness/charset) is supported.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">buffer</td><td>pointer to the serialized form of a converter selector; must be 32-bit-aligned </td></tr>
<tr><td class="paramname">length</td><td>the capacity of this buffer (can be equal to or larger than the actual data length) </td></tr>
<tr><td class="paramname">status</td><td>an in/out ICU UErrorCode </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the new selector</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable002035">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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</div>
<a id="a23bf32b0d75fca029e6c6c4cdefe3bed"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a23bf32b0d75fca029e6c6c4cdefe3bed">◆ </a></span>ucnvsel_selectForString()</h2>
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<td class="memname"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a>* ucnvsel_selectForString </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> * </td>
<td class="paramname"><em>sel</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="umachine_8h.html#a6bb9fad572d65b305324ef288165e2ac">UChar</a> * </td>
<td class="paramname"><em>s</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int32_t </td>
<td class="paramname"><em>length</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> * </td>
<td class="paramname"><em>status</em> </td>
</tr>
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<td></td>
<td>)</td>
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<p>Select converters that can map all characters in a UTF-16 string, ignoring the excluded code points. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sel</td><td>a selector </td></tr>
<tr><td class="paramname">s</td><td>UTF-16 string </td></tr>
<tr><td class="paramname">length</td><td>length of the string, or -1 if NUL-terminated </td></tr>
<tr><td class="paramname">status</td><td>an in/out ICU UErrorCode </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>an enumeration containing encoding names. The returned encoding names and their order will be the same as supplied when building the selector.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable002037">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a467365bf0bb7b6989a1777f31251d139">◆ </a></span>ucnvsel_selectForUTF8()</h2>
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<td class="memname"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> <a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a>* ucnvsel_selectForUTF8 </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> * </td>
<td class="paramname"><em>sel</em>, </td>
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<td class="paramtype">const char * </td>
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<td class="paramtype">int32_t </td>
<td class="paramname"><em>length</em>, </td>
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<td class="paramtype"><a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> * </td>
<td class="paramname"><em>status</em> </td>
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<p>Select converters that can map all characters in a UTF-8 string, ignoring the excluded code points. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sel</td><td>a selector </td></tr>
<tr><td class="paramname">s</td><td>UTF-8 string </td></tr>
<tr><td class="paramname">length</td><td>length of the string, or -1 if NUL-terminated </td></tr>
<tr><td class="paramname">status</td><td>an in/out ICU UErrorCode </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>an enumeration containing encoding names. The returned encoding names and their order will be the same as supplied when building the selector.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable002038">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a357adbf8e9d25dc643d699406eee31da">◆ </a></span>ucnvsel_serialize()</h2>
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<td class="memname"><a class="el" href="umachine_8h.html#a676114b1a64bb7c2de15c919a00b28df">U_CAPI</a> int32_t ucnvsel_serialize </td>
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<td class="paramtype">const <a class="el" href="ucnvsel_8h.html#a4bc48420c52373dc8016be5391bcc723">UConverterSelector</a> * </td>
<td class="paramname"><em>sel</em>, </td>
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<td class="paramtype">void * </td>
<td class="paramname"><em>buffer</em>, </td>
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<td class="paramtype">int32_t </td>
<td class="paramname"><em>bufferCapacity</em>, </td>
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<td class="paramtype"><a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> * </td>
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<p>Serialize a selector into a linear buffer. </p>
<p>The serialized form is portable to different machines.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sel</td><td>selector to consider </td></tr>
<tr><td class="paramname">buffer</td><td>pointer to 32-bit-aligned memory to be filled with the serialized form of this converter selector </td></tr>
<tr><td class="paramname">bufferCapacity</td><td>the capacity of this buffer </td></tr>
<tr><td class="paramname">status</td><td>an in/out ICU UErrorCode </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>the required buffer capacity to hold serialize data (even if the call fails with a U_BUFFER_OVERFLOW_ERROR, it will return the required capacity)</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable002036">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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