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            <header><h1><a href="..">Adopt</a></h1></header>
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<h1 id="api-reference"><a href="">API Reference</a></h1><p>The following is a list of all user-facing parts of adopt.</p>
<p>If there are backwards-incompatible changes to anything listed here, they will
be noted in the changelog and the author will feel bad.</p>
<p>Anything not listed here is subject to change at any time with no warning, so
don't touch it.</p>
<div class="toc">
<ul>
<li><a href="#package-adopt">Package ADOPT</a><ul>
<li><a href="#append1-function">APPEND1 (function)</a></li>
<li><a href="#argv-function">ARGV (function)</a></li>
<li><a href="#define-interface-macro">DEFINE-INTERFACE (macro)</a></li>
<li><a href="#latest-function">LATEST (function)</a></li>
<li><a href="#parse-options-function">PARSE-OPTIONS (function)</a></li>
<li><a href="#print-usage-function">PRINT-USAGE (function)</a></li>
</ul>
</li>
</ul></div>
<h2 id="package-adopt">Package <code>ADOPT</code></h2>
<h3 id="append1-function"><code>APPEND1</code> (function)</h3>
<div class="codehilite"><pre><span/>(APPEND1 LIST EL)
</pre></div>


<p>Append element <code>el</code> to the end of <code>list</code>.</p>
<p>This is implemented as <code>(append list (list el))</code>.  It is not particularly
  fast.</p>
<p>It is useful as a <code>:reduce</code> function when you want to collect all values given
  for an option.</p>
<h3 id="argv-function"><code>ARGV</code> (function)</h3>
<div class="codehilite"><pre><span/>(ARGV)
</pre></div>


<p>Return a list of the program name and command line arguments.</p>
<p>This is not implemented for every Common Lisp implementation.  You can always
  pass your own values to <code>parse-options</code> and <code>print-usage</code> if it's not
  implemented for your particular Lisp.</p>
<h3 id="define-interface-macro"><code>DEFINE-INTERFACE</code> (macro)</h3>
<div class="codehilite"><pre><span/>(DEFINE-INTERFACE NAME USAGE &amp;amp;REST OPTIONS)
</pre></div>


<h3 id="latest-function"><code>LATEST</code> (function)</h3>
<div class="codehilite"><pre><span/>(LATEST OLD NEW)
</pre></div>


<p>Return <code>new</code>.</p>
<p>It is useful as a <code>:reduce</code> function when you want to just keep the last-given
  value for an option.</p>
<h3 id="parse-options-function"><code>PARSE-OPTIONS</code> (function)</h3>
<div class="codehilite"><pre><span/>(PARSE-OPTIONS INTERFACE &amp;amp;OPTIONAL (ARGUMENTS (REST (ARGV))))
</pre></div>


<p>Parse <code>arguments</code> according to <code>interface</code>.</p>
<p>Two values are returned:</p>
<ol>
<li>A fresh list of top-level, unaccounted-for arguments that don't correspond
     to any options defined in <code>interface</code>.</li>
<li>An <code>EQL</code> hash map of option <code>name</code>s to values.</li>
</ol>
<p>See the full usage documentation for more information.</p>
<h3 id="print-usage-function"><code>PRINT-USAGE</code> (function)</h3>
<div class="codehilite"><pre><span/>(PRINT-USAGE INTERFACE &amp;amp;KEY (STREAM *STANDARD-OUTPUT*) (PROGRAM-NAME (FIRST (ARGV))) (WIDTH 80) (OPTION-WIDTH 20))
</pre></div>


<p>Print a pretty usage document for <code>interface</code> to <code>stream</code>.</p>
<p><code>width</code> should be the total width (in characters) for line-wrapping purposes.
  Care will be taken to ensure lines are no longer than this, though some edge
  cases (extremely long short/long option names and parameters) may slip
  through.</p>
<p><code>option-width</code> should be the width of the column of short/long options (in
  characters).  If the short/long option documentation is shorter than this, the
  option's documentation string will start on the same line.  Otherwise the
  option's documentation string will start on the next line.</p>
<p>The result will look something like (assuming a usage string of
  <code>"[options] FILES"</code>):</p>
<div class="codehilite"><pre><span/>(print-usage *program-interface* :width 60 :option-width 15)
; =&amp;gt;
; USAGE: /bin/foo [options] FILES
;
; Options:
;   -v, --verbose    Output extra information.
;   -q, --quiet      Shut up.
;   --ignore FILE    Ignore FILE.  May be specified multiple
;                    times.
;   -n NAME, --name NAME
;                    Your name.  May be specified many times,
;                    last one wins.
;   -m, --meow       Meow.
;   0.........1.... option-width
; 0........1.........2.........3.........4.........5.........6
</pre></div>
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author	Steve Losh <steve@stevelosh.com>
date	Sat, 23 Feb 2019 14:36:33 -0500
parents	bcc463ff154f
children	9918f80ae953