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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<p>A copy-on-write string class that operates by reference count.  
 <a href="a00725.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="a00968_source.html">string.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a1d360e9984c7598565254e00c2e1211a"><td class="memItemLeft" align="right" valign="top"><a id="a1d360e9984c7598565254e00c2e1211a"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a1d360e9984c7598565254e00c2e1211a">charbuf</a> ()</td></tr>
<tr class="memdesc:a1d360e9984c7598565254e00c2e1211a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a new character buffer with an empty string. <br /></td></tr>
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<tr class="memitem:aa52c0ad267c4089ddb9fa38bdb40a761"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#aa52c0ad267c4089ddb9fa38bdb40a761">charbuf</a> (const char *text)</td></tr>
<tr class="memdesc:aa52c0ad267c4089ddb9fa38bdb40a761"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a character buffer with assigned text.  <a href="#aa52c0ad267c4089ddb9fa38bdb40a761">More...</a><br /></td></tr>
<tr class="separator:aa52c0ad267c4089ddb9fa38bdb40a761"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a36217a813d3c263f1212e8c1f94967bf"><td class="memItemLeft" align="right" valign="top"><a id="a36217a813d3c263f1212e8c1f94967bf"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a36217a813d3c263f1212e8c1f94967bf">charbuf</a> (const <a class="el" href="a00725.html">charbuf</a> &amp;<a class="el" href="a00566.html#a9d0aa33290b08e0eeeffa9ed9cdd67db">copy</a>)</td></tr>
<tr class="memdesc:a36217a813d3c263f1212e8c1f94967bf"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor. <br /></td></tr>
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<tr class="memitem:a071e13b02e730d633837c5e808f6d484"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a071e13b02e730d633837c5e808f6d484">len</a> (void) const</td></tr>
<tr class="memdesc:a071e13b02e730d633837c5e808f6d484"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get current length of string.  <a href="#a071e13b02e730d633837c5e808f6d484">More...</a><br /></td></tr>
<tr class="separator:a071e13b02e730d633837c5e808f6d484"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4dff2bf8a7c11c5fad04e33b45366f2c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a4dff2bf8a7c11c5fad04e33b45366f2c">operator bool</a> () const</td></tr>
<tr class="memdesc:a4dff2bf8a7c11c5fad04e33b45366f2c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test if data is contained in the object.  <a href="#a4dff2bf8a7c11c5fad04e33b45366f2c">More...</a><br /></td></tr>
<tr class="separator:a4dff2bf8a7c11c5fad04e33b45366f2c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2ce0bac9580ec4355171059f7362f3a7"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a2ce0bac9580ec4355171059f7362f3a7">operator char *</a> ()</td></tr>
<tr class="memdesc:a2ce0bac9580ec4355171059f7362f3a7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get text by casting reference.  <a href="#a2ce0bac9580ec4355171059f7362f3a7">More...</a><br /></td></tr>
<tr class="separator:a2ce0bac9580ec4355171059f7362f3a7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab48ee0f03a94e204d13caf4c5fe63f49"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#ab48ee0f03a94e204d13caf4c5fe63f49">operator!</a> () const</td></tr>
<tr class="memdesc:ab48ee0f03a94e204d13caf4c5fe63f49"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test if the object is empty.  <a href="#ab48ee0f03a94e204d13caf4c5fe63f49">More...</a><br /></td></tr>
<tr class="separator:ab48ee0f03a94e204d13caf4c5fe63f49"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3e32a4df26719cdba1b57e19d79ba663"><td class="memItemLeft" align="right" valign="top">char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a3e32a4df26719cdba1b57e19d79ba663">operator()</a> (size_t offset)</td></tr>
<tr class="memdesc:a3e32a4df26719cdba1b57e19d79ba663"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get a pointer to an offset in the object by expression operator.  <a href="#a3e32a4df26719cdba1b57e19d79ba663">More...</a><br /></td></tr>
<tr class="separator:a3e32a4df26719cdba1b57e19d79ba663"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1c52b028339f59db5ad404375d63cd44"><td class="memItemLeft" align="right" valign="top">char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a1c52b028339f59db5ad404375d63cd44">operator*</a> ()</td></tr>
<tr class="memdesc:a1c52b028339f59db5ad404375d63cd44"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get text by object pointer reference.  <a href="#a1c52b028339f59db5ad404375d63cd44">More...</a><br /></td></tr>
<tr class="separator:a1c52b028339f59db5ad404375d63cd44"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a52ef9cf9922d1cf3903dede00e001e5c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a52ef9cf9922d1cf3903dede00e001e5c">operator+=</a> (const char *text)</td></tr>
<tr class="memdesc:a52ef9cf9922d1cf3903dede00e001e5c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Concatenate text into the object.  <a href="#a52ef9cf9922d1cf3903dede00e001e5c">More...</a><br /></td></tr>
<tr class="separator:a52ef9cf9922d1cf3903dede00e001e5c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acaa0c49de80a5663908d3d50aa72280e"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#acaa0c49de80a5663908d3d50aa72280e">operator=</a> (const char *text)</td></tr>
<tr class="memdesc:acaa0c49de80a5663908d3d50aa72280e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assign null terminated text to the object.  <a href="#acaa0c49de80a5663908d3d50aa72280e">More...</a><br /></td></tr>
<tr class="separator:acaa0c49de80a5663908d3d50aa72280e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0d98c258137a87a7269450c482102d12"><td class="memItemLeft" align="right" valign="top">char &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a0d98c258137a87a7269450c482102d12">operator[]</a> (size_t offset) const</td></tr>
<tr class="memdesc:a0d98c258137a87a7269450c482102d12"><td class="mdescLeft">&#160;</td><td class="mdescRight">Array operator to get a character from the object.  <a href="#a0d98c258137a87a7269450c482102d12">More...</a><br /></td></tr>
<tr class="separator:a0d98c258137a87a7269450c482102d12"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a46f0952aae526e1e0901dd3745e00feb"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00725.html#a46f0952aae526e1e0901dd3745e00feb">size</a> (void) const</td></tr>
<tr class="memdesc:a46f0952aae526e1e0901dd3745e00feb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get allocated size of the object.  <a href="#a46f0952aae526e1e0901dd3745e00feb">More...</a><br /></td></tr>
<tr class="separator:a46f0952aae526e1e0901dd3745e00feb"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;size_t S&gt;<br />
class ucommon::charbuf&lt; S &gt;</h3>

<p>A copy-on-write string class that operates by reference count. </p>
<p>This string class anchors a counted object that is managed as a copy-on-write instance of the string data. This means that multiple instances of the string class can refer to the same string in memory if it has not been modifed, which reduces heap allocation. The string class offers functions to manipulate both the string object, and generic safe string functions to manipulate ordinary null terminated character arrays directly in memory. </p><dl class="section author"><dt>Author</dt><dd>David Sugar <a href="#" onclick="location.href='mai'+'lto:'+'dyf'+'et'+'@gn'+'ut'+'ele'+'ph'+'ony'+'.o'+'rg'; return false;">dyfet<span style="display: none;">.nosp@m.</span>@gnu<span style="display: none;">.nosp@m.</span>telep<span style="display: none;">.nosp@m.</span>hony<span style="display: none;">.nosp@m.</span>.org</a> A string class that uses a cstring buffer that is fixed in memory. This allows one to manipulate a fixed buffer of text in memory through the string class. The size of the memory used must include space for the overhead() size needed for the cstring object control data. </dd>
<dd>
David Sugar <a href="#" onclick="location.href='mai'+'lto:'+'dyf'+'et'+'@gn'+'ut'+'ele'+'ph'+'ony'+'.o'+'rg'; return false;">dyfet<span style="display: none;">.nosp@m.</span>@gnu<span style="display: none;">.nosp@m.</span>telep<span style="display: none;">.nosp@m.</span>hony<span style="display: none;">.nosp@m.</span>.org</a> A template to create a character array that can be manipulated as a string. This is a mini string/stringbuf class that supports a subset of functionality but does not require a complex supporting object. Like stringbuf, this can be used to create local string variables. </dd>
<dd>
David Sugar <a href="#" onclick="location.href='mai'+'lto:'+'dyf'+'et'+'@gn'+'ut'+'ele'+'ph'+'ony'+'.o'+'rg'; return false;">dyfet<span style="display: none;">.nosp@m.</span>@gnu<span style="display: none;">.nosp@m.</span>telep<span style="display: none;">.nosp@m.</span>hony<span style="display: none;">.nosp@m.</span>.org</a> </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01459">1459</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="aa52c0ad267c4089ddb9fa38bdb40a761"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa52c0ad267c4089ddb9fa38bdb40a761">&#9670;&nbsp;</a></span>charbuf()</h2>

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template&lt;size_t S&gt; </div>
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          <td>(</td>
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<p>Create a character buffer with assigned text. </p>
<p>If the text is larger than the size of the object, it is truncated. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">text</td><td>to assign. </td></tr>
  </table>
  </dd>
</dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01477">1477</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

</div>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="a071e13b02e730d633837c5e808f6d484"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a071e13b02e730d633837c5e808f6d484">&#9670;&nbsp;</a></span>len()</h2>

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<p>Get current length of string. </p>
<dl class="section return"><dt>Returns</dt><dd>length of string. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01571">1571</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<a id="a4dff2bf8a7c11c5fad04e33b45366f2c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4dff2bf8a7c11c5fad04e33b45366f2c">&#9670;&nbsp;</a></span>operator bool()</h2>

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template&lt;size_t S&gt; </div>
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<p>Test if data is contained in the object. </p>
<dl class="section return"><dt>Returns</dt><dd>true if there is text. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01509">1509</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a2ce0bac9580ec4355171059f7362f3a7">&#9670;&nbsp;</a></span>operator char *()</h2>

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          <td class="memname"><a class="el" href="a00725.html">ucommon::charbuf</a>&lt; S &gt;::operator char * </td>
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<p>Get text by casting reference. </p>
<dl class="section return"><dt>Returns</dt><dd>pointer to text in object. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01525">1525</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#ab48ee0f03a94e204d13caf4c5fe63f49">&#9670;&nbsp;</a></span>operator!()</h2>

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<p>Test if the object is empty. </p>
<dl class="section return"><dt>Returns</dt><dd>true if the object is empty. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01517">1517</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a3e32a4df26719cdba1b57e19d79ba663">&#9670;&nbsp;</a></span>operator()()</h2>

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<p>Get a pointer to an offset in the object by expression operator. </p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">offset</td><td>of character in string buffer. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>pointer to offset in object. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01553">1553</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a1c52b028339f59db5ad404375d63cd44">&#9670;&nbsp;</a></span>operator*()</h2>

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<p>Get text by object pointer reference. </p>
<dl class="section return"><dt>Returns</dt><dd>pointer to text in object. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01533">1533</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a52ef9cf9922d1cf3903dede00e001e5c">&#9670;&nbsp;</a></span>operator+=()</h2>

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<p>Concatenate text into the object. </p>
<p>If the text is larger than the size of the object, then it is truncated. </p><dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">text</td><td>to append. </td></tr>
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<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01501">1501</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#acaa0c49de80a5663908d3d50aa72280e">&#9670;&nbsp;</a></span>operator=()</h2>

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<p>Assign null terminated text to the object. </p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">text</td><td>to assign. </td></tr>
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<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01492">1492</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a0d98c258137a87a7269450c482102d12">&#9670;&nbsp;</a></span>operator[]()</h2>

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<p>Array operator to get a character from the object. </p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">offset</td><td>of character in string buffer. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>character at offset. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01542">1542</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a46f0952aae526e1e0901dd3745e00feb">&#9670;&nbsp;</a></span>size()</h2>

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<p>Get allocated size of the object. </p>
<dl class="section return"><dt>Returns</dt><dd>allocated size. </dd></dl>

<p class="definition">Definition at line <a class="el" href="a00968_source.html#l01563">1563</a> of file <a class="el" href="a00968_source.html">string.h</a>.</p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>ucommon/<a class="el" href="a00968_source.html">string.h</a></li>
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