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<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.
<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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Namespaces</h2></td></tr>
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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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typedef struct UConverterSelector </td><td class="memItemRight" valign="bottom"><b>UConverterSelector</b></td></tr>
<tr class="separator:a4bc48420c52373dc8016be5391bcc723"><td class="memSeparator" colspan="2"> </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:a0b2460b9690ded5c739a77d25b68383b"><td class="memItemLeft" align="right" valign="top">UConverterSelector * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a0b2460b9690ded5c739a77d25b68383b">ucnvsel_open</a> (const char *const *converterList, int32_t converterListSize, const <a class="el" href="ucnv_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:a0b2460b9690ded5c739a77d25b68383b"><td class="mdescLeft"> </td><td class="mdescRight">Open a selector. <a href="#a0b2460b9690ded5c739a77d25b68383b">More...</a><br/></td></tr>
<tr class="separator:a0b2460b9690ded5c739a77d25b68383b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2866ab1e5b479153d8c9ea4d0b2eee1a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a2866ab1e5b479153d8c9ea4d0b2eee1a">ucnvsel_close</a> (UConverterSelector *sel)</td></tr>
<tr class="memdesc:a2866ab1e5b479153d8c9ea4d0b2eee1a"><td class="mdescLeft"> </td><td class="mdescRight">Closes a selector. <a href="#a2866ab1e5b479153d8c9ea4d0b2eee1a">More...</a><br/></td></tr>
<tr class="separator:a2866ab1e5b479153d8c9ea4d0b2eee1a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae7dd7980455be33af8a36c8559915b78"><td class="memItemLeft" align="right" valign="top">UConverterSelector * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#ae7dd7980455be33af8a36c8559915b78">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:ae7dd7980455be33af8a36c8559915b78"><td class="mdescLeft"> </td><td class="mdescRight">Open a selector from its serialized form. <a href="#ae7dd7980455be33af8a36c8559915b78">More...</a><br/></td></tr>
<tr class="separator:ae7dd7980455be33af8a36c8559915b78"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9b173a92d3e5206f3fc965523483ddc5"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a9b173a92d3e5206f3fc965523483ddc5">ucnvsel_serialize</a> (const UConverterSelector *sel, void *buffer, int32_t bufferCapacity, <a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> *status)</td></tr>
<tr class="memdesc:a9b173a92d3e5206f3fc965523483ddc5"><td class="mdescLeft"> </td><td class="mdescRight">Serialize a selector into a linear buffer. <a href="#a9b173a92d3e5206f3fc965523483ddc5">More...</a><br/></td></tr>
<tr class="separator:a9b173a92d3e5206f3fc965523483ddc5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab3e9d09c18b3c0955fa9c1117cec24c6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#ab3e9d09c18b3c0955fa9c1117cec24c6">ucnvsel_selectForString</a> (const UConverterSelector *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:ab3e9d09c18b3c0955fa9c1117cec24c6"><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="#ab3e9d09c18b3c0955fa9c1117cec24c6">More...</a><br/></td></tr>
<tr class="separator:ab3e9d09c18b3c0955fa9c1117cec24c6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8542180e560702a880255314d226c30d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a8542180e560702a880255314d226c30d">ucnvsel_selectForUTF8</a> (const UConverterSelector *sel, const char *s, int32_t length, <a class="el" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> *status)</td></tr>
<tr class="memdesc:a8542180e560702a880255314d226c30d"><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="#a8542180e560702a880255314d226c30d">More...</a><br/></td></tr>
<tr class="separator:a8542180e560702a880255314d226c30d"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><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>Definition in file <a class="el" href="ucnvsel_8h_source.html">ucnvsel.h</a>.</p>
</div><h2 class="groupheader">Function Documentation</h2>
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<td class="memname">void ucnvsel_close </td>
<td>(</td>
<td class="paramtype">UConverterSelector * </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#_stable001521">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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<td class="memname">UConverterSelector* 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="ucnv_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>
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<tr>
<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#_stable001520">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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<td class="memname">UConverterSelector* ucnvsel_openFromSerialized </td>
<td>(</td>
<td class="paramtype">const void * </td>
<td class="paramname"><em>buffer</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>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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</div><div class="memdoc">
<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#_stable001522">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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<td class="memname"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a>* ucnvsel_selectForString </td>
<td>(</td>
<td class="paramtype">const UConverterSelector * </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>
<tr>
<td></td>
<td>)</td>
<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#_stable001524">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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<td class="memname"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a>* ucnvsel_selectForUTF8 </td>
<td>(</td>
<td class="paramtype">const UConverterSelector * </td>
<td class="paramname"><em>sel</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </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>
<td></td><td></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>
</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#_stable001525">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
</div>
</div>
<a class="anchor" id="a9b173a92d3e5206f3fc965523483ddc5"></a>
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<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int32_t ucnvsel_serialize </td>
<td>(</td>
<td class="paramtype">const UConverterSelector * </td>
<td class="paramname"><em>sel</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>buffer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int32_t </td>
<td class="paramname"><em>bufferCapacity</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>
</tr>
</table>
</div><div class="memdoc">
<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>
</table>
</dd>
</dl>
<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#_stable001523">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>
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