<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>readfi</title>
<link rel="stylesheet" type="text/css" href="csound.css" />
<link rel="stylesheet" type="text/css" href="syntax-highlighting.css" />
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" />
<link rel="home" href="index.html" title="The Canonical Csound Reference Manual" />
<link rel="up" href="OpcodesTop.html" title="Orchestra Opcodes and Operators" />
<link rel="prev" href="readf.html" title="readf" />
<link rel="next" href="readk.html" title="readk" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">readfi</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="readf.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="readk.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry">
<a id="readfi"></a>
<div class="titlepage"></div>
<a id="IndexReadfi" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">readfi</span>
</h2>
<p>readfi —
Read a line of text from an external file.
</p>
</div>
<div class="refsect1">
<a id="idm281472896303272"></a>
<h2>Description</h2>
<p>
Read a line of text from an external file once on initialisation.
</p>
</div>
<div class="refsect1">
<a id="idm281472896302088"></a>
<h2>Syntax</h2>
<pre class="synopsis">Sres, iline <span class="command"><strong>readfi</strong></span> ifilname</pre>
</div>
<div class="refsect1">
<a id="idm281472896241976"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ifilname</em></span> -- an integer N denoting a file named "input.N" or a character string (in double quotes, spaces permitted) denoting the external file name. For a string, it may either be a full path name with directory specified or a simple filename. In the later case, the file is sought first in the current directory, then in SSDIR, and finally in SFDIR.
</p>
<p>
<span class="emphasis"><em>iline</em></span> -- line number, or -1 when end of file has been reached.
</p>
<p>
<span class="emphasis"><em>Sres</em></span> -- output of the line read from <span class="emphasis"><em>ifilname</em></span>.
</p>
<p>
This opcode allows a line of text to be read from a named
external file. There may be any number of
<span class="emphasis"><em>readfi</em></span> opcodes in an instrument or orchestra
but they read separately from the same or different files.
</p>
</div>
<div class="refsect1">
<a id="idm281472896236840"></a>
<h2>Examples</h2>
<p>
Here is an example of the readfi opcode. It uses the file <a class="ulink" href="examples/readfi.csd" target="_top"><em class="citetitle">readfi.csd</em></a>.
</p>
<div class="example">
<a id="idm281472896234984"></a>
<p class="title">
<strong>Example 811. Example of the readfi 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="idm281472718456088"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
-n
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="kd">instr</span> <span class="nf">1</span>
S<span class="n">wd</span> <span class="nb">pwd</span>
<span class="nb">printf_i</span> <span class="s">"Working directory is '%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">wd</span>
<span class="nb">prints</span> <span class="s">"Reading myself =):</span><span class="se">\n</span><span class="s">"</span>
<span class="nl">read</span><span class="p">:</span>
S<span class="n">line</span><span class="p">,</span> i<span class="n">LineNum</span> <span class="nb">readfi</span> <span class="s">"readfi.csd"</span>
<span class="nb">printf_i</span> <span class="s">"Line </span><span class="si">%d</span><span class="s">: %s"</span><span class="p">,</span> i<span class="n">LineNum</span><span class="p">,</span> i<span class="n">LineNum</span><span class="p">,</span> S<span class="n">line</span>
<span class="k">if</span> i<span class="n">LineNum</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span> <span class="k">igoto</span> <span class="nl">read</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="mf">0.1</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472896230696"></a>
<h2>See Also</h2>
<p>
<a class="link" href="readf.html" title="readf"><em class="citetitle">readf</em></a>.
</p>
</div>
<div class="refsect1">
<a id="idm281472896228616"></a>
<h2>Credits</h2>
<p>John ffitch and Joachim Heintz</p>
<p>2012; new in 5.17.12</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="readf.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="OpcodesTop.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="readk.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">readf </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> readk</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-release
>
by-pkgid
>
5fcfcb7517038d1f44ab4e478e6e61fa
>
files
>
2803
