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<h1 class="title">std/cstrutils</h1>
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<a class="reference reference-toplevel" href="#6" id="56">Imports</a>
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<summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
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<ul class="simple nested-toc-section">cmpIgnoreCase
<li><a class="reference" href="#cmpIgnoreCase%2Ccstring%2Ccstring" title="cmpIgnoreCase(a, b: cstring): int">cmpIgnoreCase(a, b: cstring): int</a></li>
</ul>
<ul class="simple nested-toc-section">cmpIgnoreStyle
<li><a class="reference" href="#cmpIgnoreStyle%2Ccstring%2Ccstring" title="cmpIgnoreStyle(a, b: cstring): int">cmpIgnoreStyle(a, b: cstring): int</a></li>
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<a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/cstrutils.nim#L1" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/cstrutils.nim#L1" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
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<p class="module-desc">This module supports helper routines for working with <tt class="docutils literal"><span class="pre"><span class="Identifier">cstring</span></span></tt> without having to convert <tt class="docutils literal"><span class="pre"><span class="Identifier">cstring</span></span></tt> to <tt class="docutils literal"><span class="pre"><span class="Identifier">string</span></span></tt>, in order to save allocations.
<h1><a class="toc-backref" id="see-also" href="#see-also">See also</a></h1><ul class="simple"><li><a class="reference external" href="strutils.html">strutils module</a> for working with <tt class="docutils literal"><span class="pre"><span class="Identifier">string</span></span></tt></li>
</ul>
</p>
<div class="section" id="6">
<h1><a class="toc-backref" href="#6">Imports</a></h1>
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<a class="reference external" href="strimpl.html">strimpl</a>
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<div class="section" id="12">
<h1><a class="toc-backref" href="#12">Procs</a></h1>
<dl class="item">
<div id="cmpIgnoreCase-procs-all">
<div id="cmpIgnoreCase,cstring,cstring">
<dt><pre><span class="Keyword">func</span> <a href="#cmpIgnoreCase%2Ccstring%2Ccstring"><span class="Identifier">cmpIgnoreCase</span></a><span class="Other">(</span><span class="Identifier">a</span><span class="Other">,</span> <span class="Identifier">b</span><span class="Other">:</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">gcsafe</span><span class="Other">,</span> <span class="Identifier">extern</span><span class="Other">:</span> <span class="StringLit">&quot;csuCmpIgnoreCase&quot;</span><span class="Other">,</span>
<span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
Compares two strings in a case insensitive manner. Returns:<ul class="simple"><li>0 if <tt class="docutils literal"><span class="pre"><span class="Identifier">a</span> <span class="Operator">==</span> <span class="Identifier">b</span></span></tt></li>
<li>&lt; 0 if <tt class="docutils literal"><span class="pre"><span class="Identifier">a</span> <span class="Operator">&lt;</span> <span class="Identifier">b</span></span></tt></li>
<li>&gt; 0 if <tt class="docutils literal"><span class="pre"><span class="Identifier">a</span> <span class="Operator">&gt;</span> <span class="Identifier">b</span></span></tt></li>
</ul>
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Identifier">assert</span> <span class="Identifier">cmpIgnoreCase</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;hello&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;HeLLo&quot;</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="DecNumber">0</span>
<span class="Identifier">assert</span> <span class="Identifier">cmpIgnoreCase</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;echo&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;hello&quot;</span><span class="Punctuation">)</span> <span class="Operator">&lt;</span> <span class="DecNumber">0</span>
<span class="Identifier">assert</span> <span class="Identifier">cmpIgnoreCase</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;yellow&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;hello&quot;</span><span class="Punctuation">)</span> <span class="Operator">&gt;</span> <span class="DecNumber">0</span></pre>
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/cstrutils.nim#L104" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/cstrutils.nim#L104" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
</dd>
</div>
</div>
<div id="cmpIgnoreStyle-procs-all">
<div id="cmpIgnoreStyle,cstring,cstring">
<dt><pre><span class="Keyword">func</span> <a href="#cmpIgnoreStyle%2Ccstring%2Ccstring"><span class="Identifier">cmpIgnoreStyle</span></a><span class="Other">(</span><span class="Identifier">a</span><span class="Other">,</span> <span class="Identifier">b</span><span class="Other">:</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">gcsafe</span><span class="Other">,</span> <span class="Identifier">extern</span><span class="Other">:</span> <span class="StringLit">&quot;csuCmpIgnoreStyle&quot;</span><span class="Other">,</span>
<span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
Semantically the same as <tt class="docutils literal"><span class="pre"><span class="Identifier">cmp</span><span class="Punctuation">(</span><span class="Identifier">normalize</span><span class="Punctuation">(</span><span class="Operator">$</span><span class="Identifier">a</span><span class="Punctuation">)</span><span class="Punctuation">,</span> <span class="Identifier">normalize</span><span class="Punctuation">(</span><span class="Operator">$</span><span class="Identifier">b</span><span class="Punctuation">)</span><span class="Punctuation">)</span></span></tt>. It is just optimized to not allocate temporary strings. This should NOT be used to compare Nim identifier names, use <tt class="docutils literal"><span class="pre"><span class="Identifier">macros</span><span class="Operator">.</span><span class="Identifier">eqIdent</span></span></tt> for that. Returns:<ul class="simple"><li>0 if <tt class="docutils literal"><span class="pre"><span class="Identifier">a</span> <span class="Operator">==</span> <span class="Identifier">b</span></span></tt></li>
<li>&lt; 0 if <tt class="docutils literal"><span class="pre"><span class="Identifier">a</span> <span class="Operator">&lt;</span> <span class="Identifier">b</span></span></tt></li>
<li>&gt; 0 if <tt class="docutils literal"><span class="pre"><span class="Identifier">a</span> <span class="Operator">&gt;</span> <span class="Identifier">b</span></span></tt></li>
</ul>
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Identifier">assert</span> <span class="Identifier">cmpIgnoreStyle</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;hello&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;H_e_L_Lo&quot;</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="DecNumber">0</span></pre>
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/cstrutils.nim#L75" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/cstrutils.nim#L75" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
</dd>
</div>
</div>
<div id="endsWith-procs-all">
<div id="endsWith,cstring,cstring">
<dt><pre><span class="Keyword">func</span> <a href="#endsWith%2Ccstring%2Ccstring"><span class="Identifier">endsWith</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">,</span> <span class="Identifier">suffix</span><span class="Other">:</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">gcsafe</span><span class="Other">,</span> <span class="Identifier">extern</span><span class="Other">:</span> <span class="StringLit">&quot;csuEndsWith&quot;</span><span class="Other">,</span>
<span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
<p>Returns true if <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt> ends with <tt class="docutils literal"><span class="pre"><span class="Identifier">suffix</span></span></tt>.</p>
<p>The JS backend uses the native <tt class="docutils literal"><span class="pre"><span class="Identifier">String</span><span class="Operator">.</span><span class="Identifier">prototype</span><span class="Operator">.</span><span class="Identifier">endsWith</span></span></tt> function.</p>
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Identifier">assert</span> <span class="Identifier">endsWith</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;Hello, Nimion&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;Nimion&quot;</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Keyword">not</span> <span class="Identifier">endsWith</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;Hello, Nimion&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;Hello&quot;</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Identifier">endsWith</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;Hello&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;&quot;</span><span class="Punctuation">)</span></pre>
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/cstrutils.nim#L50" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/cstrutils.nim#L50" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
</dd>
</div>
</div>
<div id="startsWith-procs-all">
<div id="startsWith,cstring,cstring">
<dt><pre><span class="Keyword">func</span> <a href="#startsWith%2Ccstring%2Ccstring"><span class="Identifier">startsWith</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">,</span> <span class="Identifier">prefix</span><span class="Other">:</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">gcsafe</span><span class="Other">,</span> <span class="Identifier">extern</span><span class="Other">:</span> <span class="StringLit">&quot;csuStartsWith&quot;</span><span class="Other">,</span>
<span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
<p>Returns true if <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt> starts with <tt class="docutils literal"><span class="pre"><span class="Identifier">prefix</span></span></tt>.</p>
<p>The JS backend uses the native <tt class="docutils literal"><span class="pre"><span class="Identifier">String</span><span class="Operator">.</span><span class="Identifier">prototype</span><span class="Operator">.</span><span class="Identifier">startsWith</span></span></tt> function.</p>
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Identifier">assert</span> <span class="Identifier">startsWith</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;Hello, Nimion&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;Hello&quot;</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Keyword">not</span> <span class="Identifier">startsWith</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;Hello, Nimion&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;Nimion&quot;</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Identifier">startsWith</span><span class="Punctuation">(</span><span class="RawData">cstring&quot;Hello&quot;</span><span class="Punctuation">,</span> <span class="RawData">cstring&quot;&quot;</span><span class="Punctuation">)</span></pre>
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/cstrutils.nim#L27" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/cstrutils.nim#L27" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
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