<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>function::text_strn</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1"><link rel="start" href="index.html" title="SystemTap Tapset Reference Manual"><link rel="up" href="ch27.html" title="Chapter 27. A collection of standard string functions"><link rel="prev" href="re474.html" title="function::text_str"><link rel="next" href="re476.html" title="function::tokenize"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>function::text_strn</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re474.html">Prev</a> </td><th width="60%" align="center">Chapter 27. A collection of standard string functions</th><td width="20%" align="right"> <a accesskey="n" href="re476.html">Next</a></td></tr></table><hr></div><div class="refentry" lang="en"><a name="API-text-strn"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>function::text_strn —
Escape any non-printable chars in a string
</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
text_strn:string(input:string,len:long,quoted:long)
</pre></div><div class="refsect1" lang="en"><a name="idp11909216"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>input</code></em></span></dt><dd><p>
the string to escape
</p></dd><dt><span class="term"><em class="parameter"><code>len</code></em></span></dt><dd><p>
maximum length of string to return (0 implies MAXSTRINGLEN)
</p></dd><dt><span class="term"><em class="parameter"><code>quoted</code></em></span></dt><dd><p>
put double quotes around the string. If input string is
truncated it will have “<span class="quote">...</span>” after the second quote
</p></dd></dl></div></div><div class="refsect1" lang="en"><a name="idp11916992"></a><h2>Description</h2><p>
This function accepts a string of designated length,
and any ASCII characters that are not
printable are replaced by the corresponding escape sequence in the
returned string.
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