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<h2>
<span class="refentrytitle">strcpyk</span>
</h2>
<p>strcpyk —
Assign value to a string variable (k-rate)
</p>
</div>
<div class="refsect1">
<a id="idm281472883847272"></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>
</div>
<div class="refsect1">
<a id="idm281472883795736"></a>
<h2>Syntax</h2>
<pre class="synopsis">Sdst <span class="command"><strong>strcpyk</strong></span> Ssrc</pre>
</div>
<div class="refsect1">
<a id="idm281472883793560"></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="idm281472883791704"></a>
<p class="title">
<strong>Example 950. 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>
<div class="refsect1">
<a id="idm281472705121848"></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>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o strcpyk.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
<span class="nb">seed</span> <span class="mi">0</span>
<span class="kd">instr</span> <span class="nf">1</span>
<span class="c1">;get one element of the input string whenever the metro</span>
<span class="c1">;triggers, and call a subinstrument to play the file</span>
S<span class="n">member</span> <span class="nb">strget</span> <span class="nb">p4</span>
i<span class="n">strlen</span> <span class="nb">strlen</span> S<span class="n">member</span>
k<span class="n">print</span> <span class="nb">init</span> <span class="mi">0</span>
k<span class="n">trig</span> <span class="nb">metro</span> <span class="mf">.6</span>
<span class="c1">;whenever the trigger gives signal</span>
<span class="k">if</span> k<span class="n">trig</span> <span class="o">==</span> <span class="mi">1</span> <span class="k">then</span>
<span class="c1">;choose a random element (0, 1 or 2)</span>
k<span class="n">el</span> <span class="nb">random</span> <span class="mi">0</span><span class="p">,</span> <span class="mf">3.9999</span>
k<span class="n">el</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span>k<span class="n">el</span><span class="p">)</span>
<span class="c1">;make a copy for leaving Smember intact</span>
S<span class="n">copy</span> <span class="nb">strcpyk</span> S<span class="n">member</span>
<span class="c1">;set the initial index for reading substrings</span>
k<span class="n">ndx</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c1">;set counter for searching the element</span>
k<span class="n">count</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c1">;start looping over the elements in Smember</span>
<span class="nl">loop</span><span class="p">:</span>
k<span class="n">delim</span> <span class="nb">strindexk</span> S<span class="n">copy</span><span class="p">,</span> <span class="s">":"</span>
<span class="c1">;as long as ":" occurs in Scopy, do:</span>
<span class="k">if</span> k<span class="n">delim</span> <span class="o">></span> <span class="mi">0</span> <span class="k">then</span>
<span class="c1">;if this is the element to get</span>
<span class="k">if</span> k<span class="n">el</span> <span class="o">==</span> k<span class="n">count</span> <span class="k">then</span>
<span class="c1">;read it as substring</span>
S<span class="n">file</span> <span class="nb">strsubk</span> S<span class="n">copy</span><span class="p">,</span> k<span class="n">ndx</span><span class="p">,</span> k<span class="n">delim</span>
k<span class="n">print</span> <span class="o">=</span> k<span class="n">print</span><span class="o">+</span><span class="mi">1</span>
<span class="c1">;and jump out</span>
<span class="k">kgoto</span> <span class="nl">call</span>
<span class="c1">;if not</span>
<span class="k">else</span>
<span class="c1">;cut off this element from Scopy</span>
S<span class="n">copy</span> <span class="nb">strsubk</span> S<span class="n">copy</span><span class="p">,</span> k<span class="n">delim</span><span class="o">+</span><span class="mi">1</span><span class="p">,</span> i<span class="n">strlen</span>
<span class="k">endif</span>
<span class="c1">;if no element has been found,go back to loop </span>
<span class="c1">;and look for the next element</span>
k<span class="n">count</span> <span class="o">=</span> k<span class="n">count</span><span class="o">+</span><span class="mi">1</span>
<span class="k">kgoto</span> <span class="nl">loop</span>
<span class="c1">;if there is no delimiter left, the rest is the searched element</span>
<span class="k">else</span>
S<span class="n">file</span> <span class="nb">strcpyk</span> S<span class="n">copy</span>
<span class="k">endif</span>
<span class="nl">call</span><span class="p">:</span>
<span class="c1">;print the result, call the subinstrument and play the file</span>
<span class="nb">printf</span> <span class="s">"kel = </span><span class="si">%d</span><span class="s">, file = '%s'</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> k<span class="n">trig</span><span class="o">+</span>k<span class="n">print</span><span class="p">,</span> k<span class="n">el</span><span class="p">,</span> S<span class="n">file</span>
S<span class="n">_call</span> <span class="nb">sprintfk</span> <span class="s">{{i 2 0 1 "%s"}}</span><span class="p">,</span> S<span class="n">file</span>
<span class="nb">scoreline</span> S<span class="n">_call</span><span class="p">,</span> k<span class="n">trig</span>
<span class="k">endif</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">2</span> <span class="c1">;play</span>
S<span class="n">file</span> <span class="nb">strget</span> <span class="nb">p4</span>
i<span class="n">len</span> <span class="nb">filelen</span> S<span class="n">file</span>
<span class="nb">p3</span> <span class="o">=</span> i<span class="n">len</span>
a<span class="n">sig</span> <span class="nb">soundin</span> S<span class="n">file</span>
<span class="nb">outs</span> a<span class="n">sig</span><span class="p">,</span> a<span class="n">sig</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">30</span> <span class="s">"mary.wav:fox.wav:beats.wav:flute.aiff"</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
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</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472883787512"></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">
<a id="idm281472883785720"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Istvan Varga</td>
</tr>
<tr>
<td>2005</td>
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distrib
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Mageia
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7
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armv7hl
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media
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core-release
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by-pkgid
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5fcfcb7517038d1f44ab4e478e6e61fa
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files
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2969
