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<h2>
<span class="refentrytitle">strcpyk</span>
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<p>strcpyk —
Assign value to a string variable (k-rate)
</p>
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<div class="refsect1" title="Description">
<a id="idp46273680"></a>
<h2>Description</h2>
<p>
Assign to a string variable by copying the source which may be a constant or another string variable. <span class="emphasis"><em>strcpyk</em></span> does the assignment both at initialization and performance time.
</p>
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<div class="refsect1" title="Syntax">
<a id="idp46274680"></a>
<h2>Syntax</h2>
<pre class="synopsis">Sdst <span class="command"><strong>strcpyk</strong></span> Ssrc</pre>
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<div class="refsect1" title="Examples">
<a id="idp46277408"></a>
<h2>Examples</h2>
<p>
Here is an example of the strcpyk opcode. It uses the file <a class="ulink" href="examples/strcpyk.csd" target="_top"><em class="citetitle">strcpyk.csd</em></a>.
</p>
<div class="example">
<a id="idp46278384"></a>
<p class="title">
<strong>Example 825. Example of the strcpyk 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>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o strcpyk.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
<span class="ohdr">seed</span> 0
<span class="oblock">instr</span> 1
<span class="comment">;get one element of the input string whenever the metro</span>
<span class="comment">;triggers, and call a subinstrument to play the file</span>
Smember <span class="opc">strget</span> p4
istrlen <span class="opc">strlen</span> Smember
kprint <span class="opc">init</span> 0
ktrig <span class="opc">metro</span> .6
<span class="comment">;whenever the trigger gives signal</span>
<span class="octrl">if</span> ktrig <span class="op">==</span> 1 then
<span class="comment">;choose a random element (0, 1 or 2)</span>
kel <span class="opc">random</span> 0, 3.9999
kel <span class="op">=</span> <span class="opc">int</span>(kel)
<span class="comment">;make a copy for leaving Smember intact</span>
Scopy <span class="opc">strcpyk</span> Smember
<span class="comment">;set the initial index for reading substrings</span>
kndx <span class="op">=</span> 0
<span class="comment">;set counter for searching the element</span>
kcount <span class="op">=</span> 0
<span class="comment">;start looping over the elements in Smember</span>
<span class="olabel">loop</span><span class="op">:</span>
kdelim <span class="opc">strindexk</span> Scopy, "<span class="op">:</span>"
<span class="comment">;as long as ":" occurs in Scopy, do:</span>
<span class="octrl">if</span> kdelim <span class="op">></span> 0 then
<span class="comment">;if this is the element to get</span>
<span class="octrl">if</span> kel <span class="op">==</span> kcount then
<span class="comment">;read it as substring</span>
Sfile <span class="opc">strsubk</span> Scopy, kndx, kdelim
kprint <span class="op">=</span> kprint<span class="op">+</span>1
<span class="comment">;and jump out</span>
<span class="octrl">kgoto</span> <span class="olabel">call</span>
<span class="comment">;if not</span>
<span class="octrl">else</span>
<span class="comment">;cut off this element from Scopy</span>
Scopy <span class="opc">strsubk</span> Scopy, kdelim<span class="op">+</span>1, istrlen
<span class="octrl">endif</span>
<span class="comment">;if no element has been found,go back to loop </span>
<span class="comment">;and look for the next element</span>
kcount <span class="op">=</span> kcount<span class="op">+</span>1
<span class="octrl">kgoto</span> <span class="olabel">loop</span>
<span class="comment">;if there is no delimiter left, the rest is the searched element</span>
<span class="octrl">else</span>
Sfile <span class="opc">strcpyk</span> Scopy
<span class="octrl">endif</span>
<span class="olabel">call</span><span class="op">:</span>
<span class="comment">;print the result, call the subinstrument and play the file</span>
<span class="opc">printf</span> "kel <span class="op">=</span> <span class="op">%</span>d, file <span class="op">=</span> '<span class="op">%</span>s'\n", ktrig<span class="op">+</span>kprint, kel, Sfile
S_call <span class="opc">sprintfk</span> {{i 2 0 1 "<span class="op">%</span>s"}}, Sfile
<span class="opc">scoreline</span> S_call, ktrig
<span class="octrl">endif</span>
<span class="oblock">endin</span>
<span class="oblock">instr</span> 2 <span class="comment">;play</span>
Sfile <span class="opc">strget</span> p4
ilen <span class="opc">filelen</span> Sfile
p3 <span class="op">=</span> ilen
asig <span class="opc">soundin</span> Sfile
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span> 1 0 30 "mary.wav:fox.wav:beats.wav:flute.a<span class="stamnt">i</span>ff"
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
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<p><br class="example-break" />
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<div class="refsect1" title="See also">
<a id="idp46296624"></a>
<h2>See also</h2>
<p>
<a class="link" href="strcpy.html" title="strcpy">
<em class="citetitle">strcpy</em>
</a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp46297512"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Istvan Varga</td>
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<td>2005</td>
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distrib
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Mageia
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x86_64
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media
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core-release
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b707d9a4ee443103660a75ccb6e51334
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files
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