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<h2>
<span class="refentrytitle">strsub</span>
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<p>strsub —
Extract a substring
</p>
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<div class="refsect1">
<a id="idm281472883224552"></a>
<h2>Description</h2>
<p>
Return a substring of the source string. strsub runs at init time only.
</p>
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<h2>Syntax</h2>
<pre class="synopsis">Sdst <span class="command"><strong>strsub</strong></span> Ssrc[, istart[, iend]]</pre>
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<a id="idm281472883163144"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>istart</em></span>
(optional, defaults to 0) -- start position in Ssrc, counting from 0.
A negative value means the end of the string.
</p>
<p>
<span class="emphasis"><em>iend</em></span>
(optional, defaults to -1) -- end position in Ssrc, counting from 0.
A negative value means the end of the string. If iend is less than
istart, the output is reversed.
</p>
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<h2>Examples</h2>
<p>
Here is an example of the strsub opcode. It uses the file <a class="ulink" href="examples/strsub.csd" target="_top"><em class="citetitle">strsub.csd</em></a>.
</p>
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<a id="idm281472883158616"></a>
<p class="title">
<strong>Example 961. Example of the strsub opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<div class="refsect1">
<a id="idm281472704411368"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
<span class="c1">; Audio out Audio in No messages</span>
-odac -iadc <span class="c1">;;;-d RT audio I/O</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o strsub.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="c1">; By: Jonathan Murphy 2007</span>
<span class="kd">instr</span> <span class="nf">1</span>
S<span class="n">member</span> <span class="nb">strget</span> <span class="nb">p4</span>
<span class="c1">; Parse Smember</span>
i<span class="n">strlen</span> <span class="nb">strlen</span> S<span class="n">member</span>
i<span class="n">delimiter</span> <span class="nb">strindex</span> S<span class="n">member</span><span class="p">,</span> <span class="s">":"</span>
S<span class="n">1</span> <span class="nb">strsub</span> S<span class="n">member</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> i<span class="n">delimiter</span> <span class="c1">; "String1"</span>
S<span class="n">2</span> <span class="nb">strsub</span> S<span class="n">member</span><span class="p">,</span> i<span class="n">delimiter</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> i<span class="n">strlen</span> <span class="c1">; "String2"</span>
<span class="nb">printf</span> <span class="s">"First string: %s</span><span class="se">\n</span><span class="s">Second string: %s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> S<span class="n">1</span><span class="p">,</span> S<span class="n">2</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">1</span> <span class="s">"String1:String2"</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
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<p><br class="example-break" />
</p>
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<div class="refsect1">
<a id="idm281472883154328"></a>
<h2>See also</h2>
<p>
<a class="link" href="strsubk.html" title="strsubk">
<em class="citetitle">strsubk</em>
</a>
</p>
</div>
<div class="refsect1">
<a id="idm281472883152536"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Istvan Varga</td>
</tr>
<tr>
<td>2006</td>
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