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<article class="content wrap" id="_content" data-uid="Lucene.Net.Util.UnicodeUtil">
<h1 id="Lucene_Net_Util_UnicodeUtil" data-uid="Lucene.Net.Util.UnicodeUtil" class="text-break">Class UnicodeUtil
</h1>
<div class="markdown level0 summary"><p>Class to encode .NET&apos;s UTF16 <span class="xref">char[]</span> into UTF8 <span class="xref">byte[]</span>
without always allocating a new <span class="xref">byte[]</span> as
<span class="xref">System.Text.Encoding.GetBytes(System.String)</span> of <span class="xref">System.Text.Encoding.UTF8</span> does.
<p>
<div class="lucene-block lucene-internal">This is a Lucene.NET INTERNAL API, use at your own risk</div></div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><span class="xref">System.Object</span></div>
<div class="level1"><span class="xref">UnicodeUtil</span></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<span class="xref">System.Object.Equals(System.Object)</span>
</div>
<div>
<span class="xref">System.Object.Equals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.GetHashCode()</span>
</div>
<div>
<span class="xref">System.Object.GetType()</span>
</div>
<div>
<span class="xref">System.Object.MemberwiseClone()</span>
</div>
<div>
<span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.ToString()</span>
</div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Util.html">Lucene.Net.Util</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.dll</h6>
<h5 id="Lucene_Net_Util_UnicodeUtil_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static class UnicodeUtil</code></pre>
</div>
<h3 id="fields">Fields
</h3>
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<h4 id="Lucene_Net_Util_UnicodeUtil_BIG_TERM" data-uid="Lucene.Net.Util.UnicodeUtil.BIG_TERM">BIG_TERM</h4>
<div class="markdown level1 summary"><p>A binary term consisting of a number of 0xff bytes, likely to be bigger than other terms
(e.g. collation keys) one would normally encounter, and definitely bigger than any UTF-8 terms.
<p>
WARNING: this is not a valid UTF8 Term</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly BytesRef BIG_TERM</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.Util.BytesRef.html">BytesRef</a></td>
<td></td>
</tr>
</tbody>
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<h4 id="Lucene_Net_Util_UnicodeUtil_UNI_REPLACEMENT_CHAR" data-uid="Lucene.Net.Util.UnicodeUtil.UNI_REPLACEMENT_CHAR">UNI_REPLACEMENT_CHAR</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int UNI_REPLACEMENT_CHAR = 65533</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Util_UnicodeUtil_UNI_SUR_HIGH_END" data-uid="Lucene.Net.Util.UnicodeUtil.UNI_SUR_HIGH_END">UNI_SUR_HIGH_END</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int UNI_SUR_HIGH_END = 56319</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
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<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
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<h4 id="Lucene_Net_Util_UnicodeUtil_UNI_SUR_HIGH_START" data-uid="Lucene.Net.Util.UnicodeUtil.UNI_SUR_HIGH_START">UNI_SUR_HIGH_START</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int UNI_SUR_HIGH_START = 55296</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Util_UnicodeUtil_UNI_SUR_LOW_END" data-uid="Lucene.Net.Util.UnicodeUtil.UNI_SUR_LOW_END">UNI_SUR_LOW_END</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int UNI_SUR_LOW_END = 57343</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
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<h4 id="Lucene_Net_Util_UnicodeUtil_UNI_SUR_LOW_START" data-uid="Lucene.Net.Util.UnicodeUtil.UNI_SUR_LOW_START">UNI_SUR_LOW_START</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public const int UNI_SUR_LOW_START = 56320</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="methods">Methods
</h3>
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<a id="Lucene_Net_Util_UnicodeUtil_CodePointCount_" data-uid="Lucene.Net.Util.UnicodeUtil.CodePointCount*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_CodePointCount_Lucene_Net_Util_BytesRef_" data-uid="Lucene.Net.Util.UnicodeUtil.CodePointCount(Lucene.Net.Util.BytesRef)">CodePointCount(BytesRef)</h4>
<div class="markdown level1 summary"><p>Returns the number of code points in this UTF8 sequence.</p>
<p><p>This method assumes valid UTF8 input. This method
<strong>does not perform</strong> full UTF8 validation, it will check only the
first byte of each codepoint (for multi-byte sequences any bytes after
the head are skipped).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static int CodePointCount(BytesRef utf8)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.Util.BytesRef.html">BytesRef</a></td>
<td><span class="parametername">utf8</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="exceptions">Exceptions</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Condition</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.ArgumentException</span></td>
<td><p>If invalid codepoint header byte occurs or the
content is prematurely truncated. </p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_NewString_" data-uid="Lucene.Net.Util.UnicodeUtil.NewString*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_NewString_System_Int32___System_Int32_System_Int32_" data-uid="Lucene.Net.Util.UnicodeUtil.NewString(System.Int32[],System.Int32,System.Int32)">NewString(Int32[], Int32, Int32)</h4>
<div class="markdown level1 summary"><p>Cover JDK 1.5 API. Create a String from an array of <code data-dev-comment-type="paramref" class="paramref">codePoints</code>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string NewString(int[] codePoints, int offset, int count)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span>[]</td>
<td><span class="parametername">codePoints</span></td>
<td><p>The code array. </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">offset</span></td>
<td><p>The start of the text in the code point array. </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">count</span></td>
<td><p>The number of code points. </p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><p>a String representing the code points between offset and count. </p>
</td>
</tr>
</tbody>
</table>
<h5 class="exceptions">Exceptions</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Condition</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.ArgumentException</span></td>
<td><p>If an invalid code point is encountered. </p>
</td>
</tr>
<tr>
<td><span class="xref">System.IndexOutOfRangeException</span></td>
<td><p>If the offset or count are out of bounds. </p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_ToCharArray_" data-uid="Lucene.Net.Util.UnicodeUtil.ToCharArray*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_ToCharArray_System_Int32___System_Int32_System_Int32_" data-uid="Lucene.Net.Util.UnicodeUtil.ToCharArray(System.Int32[],System.Int32,System.Int32)">ToCharArray(Int32[], Int32, Int32)</h4>
<div class="markdown level1 summary"><p>Generates char array that represents the provided input code points.
<p>
LUCENENET specific.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static char[] ToCharArray(int[] codePoints, int offset, int count)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span>[]</td>
<td><span class="parametername">codePoints</span></td>
<td><p>The code array. </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">offset</span></td>
<td><p>The start of the text in the code point array. </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">count</span></td>
<td><p>The number of code points. </p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><p>a char array representing the code points between offset and count. </p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_ToHexString_" data-uid="Lucene.Net.Util.UnicodeUtil.ToHexString*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_ToHexString_System_String_" data-uid="Lucene.Net.Util.UnicodeUtil.ToHexString(System.String)">ToHexString(String)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static string ToHexString(string s)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">s</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Util_UnicodeUtil_UTF16toUTF8_J2N_Text_ICharSequence_System_Int32_System_Int32_Lucene_Net_Util_BytesRef_.md&amp;value=---%0Auid%3A%20Lucene.Net.Util.UnicodeUtil.UTF16toUTF8(J2N.Text.ICharSequence%2CSystem.Int32%2CSystem.Int32%2CLucene.Net.Util.BytesRef)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a id="Lucene_Net_Util_UnicodeUtil_UTF16toUTF8_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF16toUTF8*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_UTF16toUTF8_J2N_Text_ICharSequence_System_Int32_System_Int32_Lucene_Net_Util_BytesRef_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF16toUTF8(J2N.Text.ICharSequence,System.Int32,System.Int32,Lucene.Net.Util.BytesRef)">UTF16toUTF8(ICharSequence, Int32, Int32, BytesRef)</h4>
<div class="markdown level1 summary"><p>Encode characters from this <span class="xref">J2N.Text.ICharSequence</span>, starting at <code data-dev-comment-type="paramref" class="paramref">offset</code>
for <code data-dev-comment-type="paramref" class="paramref">length</code> characters. After encoding, <code>result.Offset</code> will always be 0.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static void UTF16toUTF8(ICharSequence s, int offset, int length, BytesRef result)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">J2N.Text.ICharSequence</span></td>
<td><span class="parametername">s</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">offset</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">length</span></td>
<td></td>
</tr>
<tr>
<td><a class="xref" href="Lucene.Net.Util.BytesRef.html">BytesRef</a></td>
<td><span class="parametername">result</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_UTF16toUTF8_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF16toUTF8*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_UTF16toUTF8_System_Char___System_Int32_System_Int32_Lucene_Net_Util_BytesRef_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF16toUTF8(System.Char[],System.Int32,System.Int32,Lucene.Net.Util.BytesRef)">UTF16toUTF8(Char[], Int32, Int32, BytesRef)</h4>
<div class="markdown level1 summary"><p>Encode characters from a <span class="xref">char[]</span> <code data-dev-comment-type="paramref" class="paramref">source</code>, starting at
<code data-dev-comment-type="paramref" class="paramref">offset</code> for <code data-dev-comment-type="paramref" class="paramref">length</code> chars. After encoding, <code>result.Offset</code> will always be 0.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static void UTF16toUTF8(char[] source, int offset, int length, BytesRef result)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><span class="parametername">source</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">offset</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">length</span></td>
<td></td>
</tr>
<tr>
<td><a class="xref" href="Lucene.Net.Util.BytesRef.html">BytesRef</a></td>
<td><span class="parametername">result</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_UTF16toUTF8_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF16toUTF8*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_UTF16toUTF8_System_String_System_Int32_System_Int32_Lucene_Net_Util_BytesRef_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF16toUTF8(System.String,System.Int32,System.Int32,Lucene.Net.Util.BytesRef)">UTF16toUTF8(String, Int32, Int32, BytesRef)</h4>
<div class="markdown level1 summary"><p>Encode characters from this <span class="xref">System.String</span>, starting at <code data-dev-comment-type="paramref" class="paramref">offset</code>
for <code data-dev-comment-type="paramref" class="paramref">length</code> characters. After encoding, <code>result.Offset</code> will always be 0.
<p>
LUCENENET specific.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static void UTF16toUTF8(string s, int offset, int length, BytesRef result)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">s</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">offset</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">length</span></td>
<td></td>
</tr>
<tr>
<td><a class="xref" href="Lucene.Net.Util.BytesRef.html">BytesRef</a></td>
<td><span class="parametername">result</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_UTF8toUTF16_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF8toUTF16*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_UTF8toUTF16_Lucene_Net_Util_BytesRef_Lucene_Net_Util_CharsRef_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF8toUTF16(Lucene.Net.Util.BytesRef,Lucene.Net.Util.CharsRef)">UTF8toUTF16(BytesRef, CharsRef)</h4>
<div class="markdown level1 summary"><p>Utility method for <a class="xref" href="Lucene.Net.Util.UnicodeUtil.html#Lucene_Net_Util_UnicodeUtil_UTF8toUTF16_System_Byte___System_Int32_System_Int32_Lucene_Net_Util_CharsRef_">UTF8toUTF16(Byte[], Int32, Int32, CharsRef)</a> </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static void UTF8toUTF16(BytesRef bytesRef, CharsRef chars)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.Util.BytesRef.html">BytesRef</a></td>
<td><span class="parametername">bytesRef</span></td>
<td></td>
</tr>
<tr>
<td><a class="xref" href="Lucene.Net.Util.CharsRef.html">CharsRef</a></td>
<td><span class="parametername">chars</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="Lucene_Net_Util_UnicodeUtil_UTF8toUTF16_Lucene_Net_Util_BytesRef_Lucene_Net_Util_CharsRef__seealso">See Also</h5>
<div class="seealso">
<div><a class="xref" href="Lucene.Net.Util.UnicodeUtil.html#Lucene_Net_Util_UnicodeUtil_UTF8toUTF16_System_Byte___System_Int32_System_Int32_Lucene_Net_Util_CharsRef_">UTF8toUTF16(Byte[], Int32, Int32, CharsRef)</a></div>
</div>
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</span>
<a id="Lucene_Net_Util_UnicodeUtil_UTF8toUTF16_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF8toUTF16*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_UTF8toUTF16_System_Byte___System_Int32_System_Int32_Lucene_Net_Util_CharsRef_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF8toUTF16(System.Byte[],System.Int32,System.Int32,Lucene.Net.Util.CharsRef)">UTF8toUTF16(Byte[], Int32, Int32, CharsRef)</h4>
<div class="markdown level1 summary"><p>Interprets the given byte array as UTF-8 and converts to UTF-16. The <a class="xref" href="Lucene.Net.Util.CharsRef.html">CharsRef</a> will be extended if
it doesn&apos;t provide enough space to hold the worst case of each byte becoming a UTF-16 codepoint.
<p>
NOTE: Full characters are read, even if this reads past the length passed (and
can result in an <span class="xref">System.IndexOutOfRangeException</span> if invalid UTF-8 is passed).
Explicit checks for valid UTF-8 are not performed.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static void UTF8toUTF16(byte[] utf8, int offset, int length, CharsRef chars)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Byte</span>[]</td>
<td><span class="parametername">utf8</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">offset</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">length</span></td>
<td></td>
</tr>
<tr>
<td><a class="xref" href="Lucene.Net.Util.CharsRef.html">CharsRef</a></td>
<td><span class="parametername">chars</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_UTF8toUTF32_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF8toUTF32*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_UTF8toUTF32_Lucene_Net_Util_BytesRef_Lucene_Net_Util_Int32sRef_" data-uid="Lucene.Net.Util.UnicodeUtil.UTF8toUTF32(Lucene.Net.Util.BytesRef,Lucene.Net.Util.Int32sRef)">UTF8toUTF32(BytesRef, Int32sRef)</h4>
<div class="markdown level1 summary"><p>This method assumes valid UTF8 input. This method
<strong>does not perform</strong> full UTF8 validation, it will check only the
first byte of each codepoint (for multi-byte sequences any bytes after
the head are skipped).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static void UTF8toUTF32(BytesRef utf8, Int32sRef utf32)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.Util.BytesRef.html">BytesRef</a></td>
<td><span class="parametername">utf8</span></td>
<td></td>
</tr>
<tr>
<td><a class="xref" href="Lucene.Net.Util.Int32sRef.html">Int32sRef</a></td>
<td><span class="parametername">utf32</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="exceptions">Exceptions</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Condition</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.ArgumentException</span></td>
<td><p>If invalid codepoint header byte occurs or the
content is prematurely truncated. </p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Util_UnicodeUtil_ValidUTF16String_" data-uid="Lucene.Net.Util.UnicodeUtil.ValidUTF16String*"></a>
<h4 id="Lucene_Net_Util_UnicodeUtil_ValidUTF16String_J2N_Text_ICharSequence_" data-uid="Lucene.Net.Util.UnicodeUtil.ValidUTF16String(J2N.Text.ICharSequence)">ValidUTF16String(ICharSequence)</h4>
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<h5 class="decalaration">Declaration</h5>
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<pre><code class="lang-csharp hljs">public static bool ValidUTF16String(ICharSequence s)</code></pre>
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<h5 class="parameters">Parameters</h5>
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<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
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<td><span class="xref">J2N.Text.ICharSequence</span></td>
<td><span class="parametername">s</span></td>
<td></td>
</tr>
</tbody>
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<h5 class="returns">Returns</h5>
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<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Boolean</span></td>
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<h4 id="Lucene_Net_Util_UnicodeUtil_ValidUTF16String_System_Char___System_Int32_" data-uid="Lucene.Net.Util.UnicodeUtil.ValidUTF16String(System.Char[],System.Int32)">ValidUTF16String(Char[], Int32)</h4>
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<pre><code class="lang-csharp hljs">public static bool ValidUTF16String(char[] s, int size)</code></pre>
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<h5 class="parameters">Parameters</h5>
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<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
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</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><span class="parametername">s</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">size</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
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<thead>
<tr>
<th>Type</th>
<th>Description</th>
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<td><span class="xref">System.Boolean</span></td>
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<h4 id="Lucene_Net_Util_UnicodeUtil_ValidUTF16String_System_String_" data-uid="Lucene.Net.Util.UnicodeUtil.ValidUTF16String(System.String)">ValidUTF16String(String)</h4>
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<pre><code class="lang-csharp hljs">public static bool ValidUTF16String(string s)</code></pre>
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<h5 class="parameters">Parameters</h5>
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<th>Type</th>
<th>Name</th>
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<td><span class="xref">System.String</span></td>
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<h5 class="returns">Returns</h5>
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<th>Type</th>
<th>Description</th>
</tr>
</thead>
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<td><span class="xref">System.Boolean</span></td>
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<h4 id="Lucene_Net_Util_UnicodeUtil_ValidUTF16String_System_Text_StringBuilder_" data-uid="Lucene.Net.Util.UnicodeUtil.ValidUTF16String(System.Text.StringBuilder)">ValidUTF16String(StringBuilder)</h4>
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<pre><code class="lang-csharp hljs">public static bool ValidUTF16String(StringBuilder s)</code></pre>
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<h5 class="parameters">Parameters</h5>
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<th>Type</th>
<th>Description</th>
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<td><span class="xref">System.Boolean</span></td>
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