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icu-doc-4.4-2.1mdv2010.2.i586.rpm

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<h1>ucnvsel.h File Reference</h1>
<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>
<code>#include &quot;<a class="el" href="uset_8h_source.html">unicode/uset.h</a>&quot;</code><br/>
<code>#include &quot;<a class="el" href="utypes_8h_source.html">unicode/utypes.h</a>&quot;</code><br/>
<code>#include &quot;<a class="el" href="utf16_8h_source.html">unicode/utf16.h</a>&quot;</code><br/>
<code>#include &quot;<a class="el" href="uenum_8h_source.html">unicode/uenum.h</a>&quot;</code><br/>
<code>#include &quot;<a class="el" href="ucnv_8h_source.html">unicode/ucnv.h</a>&quot;</code><br/>
<code>#include &quot;<a class="el" href="localpointer_8h_source.html">unicode/localpointer.h</a>&quot;</code><br/>

<p><a href="ucnvsel_8h_source.html">Go to the source code of this file.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Typedefs</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader"></div></td></tr>
<tr><td colspan="2"><div class="groupText"><p><a class="anchor" id="amgrpd41d8cd98f00b204e9800998ecf8427e"></a> </p>
<br/><br/></div></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a4bc48420c52373dc8016be5391bcc723"></a><!-- doxytag: member="ucnvsel.h::UConverterSelector" ref="a4bc48420c52373dc8016be5391bcc723" args="" -->
typedef struct UConverterSelector&nbsp;</td><td class="memItemRight" valign="bottom"><b>UConverterSelector</b></td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">UConverterSelector *&nbsp;</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="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><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Open a selector.  <a href="#a0b2460b9690ded5c739a77d25b68383b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="ucnvsel_8h.html#a2866ab1e5b479153d8c9ea4d0b2eee1a">ucnvsel_close</a> (UConverterSelector *sel)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Closes a selector.  <a href="#a2866ab1e5b479153d8c9ea4d0b2eee1a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">UConverterSelector *&nbsp;</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><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Open a selector from its serialized form.  <a href="#ae7dd7980455be33af8a36c8559915b78"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int32_t&nbsp;</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><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Serialize a selector into a linear buffer.  <a href="#a9b173a92d3e5206f3fc965523483ddc5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a> *&nbsp;</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><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Select converters that can map all characters in a UTF-16 string, ignoring the excluded code points.  <a href="#ab3e9d09c18b3c0955fa9c1117cec24c6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a> *&nbsp;</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><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Select converters that can map all characters in a UTF-8 string, ignoring the excluded code points.  <a href="#a8542180e560702a880255314d226c30d"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<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>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="a2866ab1e5b479153d8c9ea4d0b2eee1a"></a><!-- doxytag: member="ucnvsel.h::ucnvsel_close" ref="a2866ab1e5b479153d8c9ea4d0b2eee1a" args="(UConverterSelector *sel)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void ucnvsel_close </td>
          <td>(</td>
          <td class="paramtype">UConverterSelector *&nbsp;</td>
          <td class="paramname"> <em>sel</em></td>
          <td>&nbsp;)&nbsp;</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="see"><dt><b>See also:</b></dt><dd>ucnv_selectForString </dd>
<dd>
ucnv_selectForUTF8</dd></dl>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>sel</em>&nbsp;</td><td>selector to close</td></tr>
  </table>
  </dd>
</dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable001141">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>

</div>
</div>
<a class="anchor" id="a0b2460b9690ded5c739a77d25b68383b"></a><!-- doxytag: member="ucnvsel.h::ucnvsel_open" ref="a0b2460b9690ded5c739a77d25b68383b" args="(const char *const *converterList, int32_t converterListSize, const USet *excludedCodePoints, const UConverterUnicodeSet whichSet, UErrorCode *status)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">UConverterSelector* ucnvsel_open </td>
          <td>(</td>
          <td class="paramtype">const char *const *&nbsp;</td>
          <td class="paramname"> <em>converterList</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&nbsp;</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> *&nbsp;</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>&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>status</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<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><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>converterList</em>&nbsp;</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 valign="top"></td><td valign="top"><em>converterListSize</em>&nbsp;</td><td>number of encodings in above list. If 0, builds a selector for all available converters. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>excludedCodePoints</em>&nbsp;</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 valign="top"></td><td valign="top"><em>whichSet</em>&nbsp;</td><td>what converter set to use? Use this to determine whether to consider only roundtrip mappings or also fallbacks. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>status</em>&nbsp;</td><td>an in/out ICU UErrorCode </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the new selector</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable001140">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>

</div>
</div>
<a class="anchor" id="ae7dd7980455be33af8a36c8559915b78"></a><!-- doxytag: member="ucnvsel.h::ucnvsel_openFromSerialized" ref="ae7dd7980455be33af8a36c8559915b78" args="(const void *buffer, int32_t length, UErrorCode *status)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
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          <td class="memname">UConverterSelector* ucnvsel_openFromSerialized </td>
          <td>(</td>
          <td class="paramtype">const void *&nbsp;</td>
          <td class="paramname"> <em>buffer</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>status</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
        </tr>
      </table>
</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><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>buffer</em>&nbsp;</td><td>pointer to the serialized form of a converter selector; must be 32-bit-aligned </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>length</em>&nbsp;</td><td>the capacity of this buffer (can be equal to or larger than the actual data length) </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>status</em>&nbsp;</td><td>an in/out ICU UErrorCode </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the new selector</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable001142">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>

</div>
</div>
<a class="anchor" id="ab3e9d09c18b3c0955fa9c1117cec24c6"></a><!-- doxytag: member="ucnvsel.h::ucnvsel_selectForString" ref="ab3e9d09c18b3c0955fa9c1117cec24c6" args="(const UConverterSelector *sel, const UChar *s, int32_t length, UErrorCode *status)" -->
<div class="memitem">
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        <tr>
          <td class="memname"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a>* ucnvsel_selectForString </td>
          <td>(</td>
          <td class="paramtype">const UConverterSelector *&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>s</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>status</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Select converters that can map all characters in a UTF-16 string, ignoring the excluded code points. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>sel</em>&nbsp;</td><td>a selector </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>s</em>&nbsp;</td><td>UTF-16 string </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>length</em>&nbsp;</td><td>length of the string, or -1 if NUL-terminated </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>status</em>&nbsp;</td><td>an in/out ICU UErrorCode </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></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#_stable001144">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>

</div>
</div>
<a class="anchor" id="a8542180e560702a880255314d226c30d"></a><!-- doxytag: member="ucnvsel.h::ucnvsel_selectForUTF8" ref="a8542180e560702a880255314d226c30d" args="(const UConverterSelector *sel, const char *s, int32_t length, UErrorCode *status)" -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname"><a class="el" href="uenum_8h.html#a32b7253b2148022535be36a9fcdb5a8d">UEnumeration</a>* ucnvsel_selectForUTF8 </td>
          <td>(</td>
          <td class="paramtype">const UConverterSelector *&nbsp;</td>
          <td class="paramname"> <em>sel</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>s</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>status</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Select converters that can map all characters in a UTF-8 string, ignoring the excluded code points. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>sel</em>&nbsp;</td><td>a selector </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>s</em>&nbsp;</td><td>UTF-8 string </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>length</em>&nbsp;</td><td>length of the string, or -1 if NUL-terminated </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>status</em>&nbsp;</td><td>an in/out ICU UErrorCode </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></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#_stable001145">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>

</div>
</div>
<a class="anchor" id="a9b173a92d3e5206f3fc965523483ddc5"></a><!-- doxytag: member="ucnvsel.h::ucnvsel_serialize" ref="a9b173a92d3e5206f3fc965523483ddc5" args="(const UConverterSelector *sel, void *buffer, int32_t bufferCapacity, UErrorCode *status)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
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          <td class="memname">int32_t ucnvsel_serialize </td>
          <td>(</td>
          <td class="paramtype">const UConverterSelector *&nbsp;</td>
          <td class="paramname"> <em>sel</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>buffer</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>status</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <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><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>sel</em>&nbsp;</td><td>selector to consider </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>buffer</em>&nbsp;</td><td>pointer to 32-bit-aligned memory to be filled with the serialized form of this converter selector </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>bufferCapacity</em>&nbsp;</td><td>the capacity of this buffer </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>status</em>&nbsp;</td><td>an in/out ICU UErrorCode </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></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#_stable001143">Stable:</a></b></dt><dd>ICU 4.2 </dd></dl>

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