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<h1>set_args
<small>Subroutine</small>
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<h2>public subroutine set_args(prototype, help_text, version_text, string, prefix, ierr, errmsg)
</h2>
<h2 id="name">NAME</h2>
<div class="codehilite"><pre><span></span><code>set_args(3f) - [ARGUMENTS:M_CLI2] command line argument parsing
(LICENSE:PD)
</code></pre></div>
<h2 id="synopsis">SYNOPSIS</h2>
<div class="codehilite"><pre><span></span><code> subroutine set_args(prototype,help_text,version_text,ierr,errmsg)
character(len=*),intent(in),optional :: prototype
character(len=*),intent(in),optional :: help_text(:)
character(len=*),intent(in),optional :: version_text(:)
integer,intent(out),optional :: ierr
character(len=:),intent(out),allocatable,optional :: errmsg
</code></pre></div>
<h2 id="description">DESCRIPTION</h2>
<div class="codehilite"><pre><span></span><code><span class="nv">SET_ARGS</span><span class="ss">(</span><span class="mi">3</span><span class="nv">f</span><span class="ss">)</span> <span class="nv">requires</span> <span class="nv">a</span> <span class="mi">1</span><span class="o">-</span><span class="nv">like</span> <span class="nv">command</span> <span class="nv">prototype</span> <span class="nv">which</span> <span class="nv">defines</span>
<span class="nv">the</span> <span class="nv">command</span><span class="o">-</span><span class="nv">line</span> <span class="nv">options</span> <span class="nv">and</span> <span class="nv">their</span> <span class="nv">default</span> <span class="nv">values</span>. <span class="nv">When</span> <span class="nv">the</span> <span class="nv">program</span>
<span class="nv">is</span> <span class="nv">executed</span> <span class="nv">this</span> <span class="nv">and</span> <span class="nv">the</span> <span class="nv">command</span><span class="o">-</span><span class="nv">line</span> <span class="nv">options</span> <span class="nv">are</span> <span class="nv">applied</span> <span class="nv">and</span> <span class="nv">the</span>
<span class="nv">resulting</span> <span class="nv">values</span> <span class="nv">are</span> <span class="nv">placed</span> <span class="nv">in</span> <span class="nv">an</span> <span class="nv">internal</span> <span class="nv">table</span> <span class="k">for</span> <span class="nv">retrieval</span> <span class="nv">via</span>
<span class="nv">GET_ARGS</span><span class="ss">(</span><span class="mi">3</span><span class="nv">f</span><span class="ss">)</span>.
<span class="nv">The</span> <span class="nv">built</span><span class="o">-</span><span class="nv">in</span> <span class="o">--</span><span class="nv">help</span> <span class="nv">and</span> <span class="o">--</span><span class="nv">version</span> <span class="nv">options</span> <span class="nv">require</span> <span class="nv">optional</span> <span class="nv">help_text</span>
<span class="nv">and</span> <span class="nv">version_text</span> <span class="nv">values</span> <span class="nv">to</span> <span class="nv">be</span> <span class="nv">provided</span> <span class="nv">to</span> <span class="nv">be</span> <span class="nv">particularly</span> <span class="nv">useful</span>.
</code></pre></div>
<h2 id="options">OPTIONS</h2>
<div class="codehilite"><pre><span></span><code><span class="nv">PROTOTYPE</span> <span class="nv">composed</span> <span class="nv">of</span> <span class="nv">all</span> <span class="nv">command</span> <span class="nv">arguments</span> <span class="nv">concatenated</span>
<span class="nv">into</span> <span class="nv">a</span> <span class="nv">Unix</span><span class="o">-</span><span class="nv">like</span> <span class="nv">command</span> <span class="nv">prototype</span> <span class="nv">string</span>. <span class="k">For</span>
<span class="nv">example</span>:
<span class="k">call</span> <span class="nl">set_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">-L F --ints 1,2,3 --title "my title" -R 10.3</span><span class="s1">'</span><span class="ss">)</span>
<span class="nv">The</span> <span class="nv">following</span> <span class="nv">options</span> <span class="nv">are</span> <span class="nv">predefined</span> <span class="k">for</span> <span class="nv">all</span> <span class="nv">commands</span>:
<span class="s1">'</span><span class="s">--verbose F --usage F --help F --version F</span><span class="s1">'</span>.
<span class="nv">see</span> <span class="s2">"</span><span class="s">DEFINING THE PROTOTYPE</span><span class="s2">"</span> <span class="nv">in</span> <span class="nv">the</span> <span class="k">next</span> <span class="nv">section</span> <span class="k">for</span>
<span class="nv">further</span> <span class="nv">details</span>.
<span class="nv">HELP_TEXT</span> <span class="k">if</span> <span class="nv">present</span>, <span class="nv">will</span> <span class="nv">be</span> <span class="nv">displayed</span> <span class="nv">when</span> <span class="nv">the</span> <span class="nv">program</span> <span class="nv">is</span> <span class="nv">called</span> <span class="nv">with</span>
<span class="nv">a</span> <span class="o">--</span><span class="nv">help</span> <span class="nv">switch</span>, <span class="nv">and</span> <span class="k">then</span> <span class="nv">the</span> <span class="nv">program</span> <span class="nv">will</span> <span class="nv">terminate</span>. <span class="k">If</span>
<span class="nv">help</span> <span class="nv">text</span> <span class="nv">is</span> <span class="nv">not</span> <span class="nv">supplied</span> <span class="nv">the</span> <span class="nv">command</span> <span class="nv">line</span> <span class="nv">initialization</span>
<span class="nv">string</span> <span class="nv">will</span> <span class="nv">be</span> <span class="nv">echoed</span>.
<span class="nv">VERSION_TEXT</span> <span class="k">if</span> <span class="nv">present</span>, <span class="nv">any</span> <span class="nv">version</span> <span class="nv">text</span> <span class="nv">defined</span> <span class="nv">will</span> <span class="nv">be</span> <span class="nv">displayed</span>
<span class="nv">when</span> <span class="nv">the</span> <span class="nv">program</span> <span class="nv">is</span> <span class="nv">called</span> <span class="nv">with</span> <span class="nv">a</span> <span class="o">--</span><span class="nv">version</span> <span class="nv">switch</span>,
<span class="nv">and</span> <span class="k">then</span> <span class="nv">the</span> <span class="nv">program</span> <span class="nv">will</span> <span class="nv">terminate</span>.
<span class="nv">IERR</span> <span class="k">if</span> <span class="nv">present</span> <span class="nv">a</span> <span class="nv">non</span><span class="o">-</span><span class="nv">zero</span> <span class="nv">option</span> <span class="nv">is</span> <span class="nv">returned</span> <span class="nv">when</span> <span class="nv">an</span>
<span class="nv">error</span> <span class="nv">occurs</span> <span class="nv">instead</span> <span class="nv">of</span> <span class="nv">the</span> <span class="nv">program</span> <span class="nv">terminating</span>.
<span class="nv">ERRMSG</span> <span class="nv">a</span> <span class="nv">description</span> <span class="nv">of</span> <span class="nv">the</span> <span class="nv">error</span> <span class="k">if</span> <span class="nv">ierr</span> <span class="nv">is</span> <span class="nv">present</span>.
</code></pre></div>
<h2 id="defining-the-prototype">DEFINING THE PROTOTYPE</h2>
<div class="codehilite"><pre><span></span><code><span class="n">o</span><span class="w"> </span><span class="n">Keywords</span><span class="w"> </span><span class="n">start</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">single</span><span class="w"> </span><span class="n">dash</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">short</span><span class="w"> </span><span class="n">single</span><span class="o">-</span><span class="n">character</span><span class="w"></span>
<span class="w"> </span><span class="n">keywords</span><span class="p">,</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">two</span><span class="w"> </span><span class="n">dashes</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">longer</span><span class="w"> </span><span class="n">keywords</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">all</span><span class="w"> </span><span class="n">keywords</span><span class="w"> </span><span class="n">on</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">prototype</span><span class="w"> </span><span class="n">MUST</span><span class="w"> </span><span class="n">get</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">value</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">logicals</span><span class="w"> </span><span class="n">must</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">set</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">an</span><span class="w"> </span><span class="n">unquoted</span><span class="w"> </span><span class="n">F</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">strings</span><span class="w"> </span><span class="n">must</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">delimited</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">double</span><span class="o">-</span><span class="n">quotes</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">Since</span><span class="w"> </span><span class="n">internal</span><span class="w"> </span><span class="n">double</span><span class="o">-</span><span class="n">quotes</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">represented</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">two</span><span class="w"></span>
<span class="w"> </span><span class="n">double</span><span class="o">-</span><span class="n">quotes</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">string</span><span class="w"> </span><span class="n">must</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">at</span><span class="w"> </span><span class="n">least</span><span class="w"> </span><span class="n">one</span><span class="w"> </span><span class="n">space</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">numeric</span><span class="w"> </span><span class="n">keywords</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="ow">not</span><span class="w"> </span><span class="n">allowed</span><span class="p">;</span><span class="w"> </span><span class="n">but</span><span class="w"> </span><span class="n">this</span><span class="w"> </span><span class="n">allows</span><span class="w"></span>
<span class="w"> </span><span class="n">negative</span><span class="w"> </span><span class="n">numbers</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">used</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="n">values</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">lists</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">values</span><span class="w"> </span><span class="n">should</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">comma</span><span class="o">-</span><span class="n">delimited</span><span class="w"> </span><span class="n">unless</span><span class="w"> </span><span class="n">a</span><span class="w"></span>
<span class="w"> </span><span class="n">user</span><span class="o">-</span><span class="n">specified</span><span class="w"> </span><span class="n">delimiter</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">used</span><span class="o">.</span><span class="w"> </span><span class="n">The</span><span class="w"> </span><span class="n">prototype</span><span class="w"></span>
<span class="w"> </span><span class="n">must</span><span class="w"> </span><span class="n">use</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">same</span><span class="w"> </span><span class="n">array</span><span class="w"> </span><span class="n">delimiters</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">call</span><span class="w"> </span><span class="n">to</span><span class="w"></span>
<span class="w"> </span><span class="n">get</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">value</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">define</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">zero</span><span class="o">-</span><span class="n">length</span><span class="w"> </span><span class="n">allocatable</span><span class="w"> </span><span class="n">array</span><span class="w"> </span><span class="n">make</span><span class="w"> </span><span class="n">the</span><span class="w"></span>
<span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">delimiter</span><span class="w"> </span><span class="p">(</span><span class="n">usually</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">comma</span><span class="p">)</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="n">an</span><span class="w"> </span><span class="n">empty</span><span class="w"> </span><span class="n">set</span><span class="w"></span>
<span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">braces</span><span class="w"> </span><span class="p">(</span><span class="s2">"[]"</span><span class="p">)</span><span class="o">.</span><span class="w"></span>
<span class="n">LONG</span><span class="w"> </span><span class="n">AND</span><span class="w"> </span><span class="n">SHORT</span><span class="w"> </span><span class="n">NAMES</span><span class="w"></span>
<span class="n">Long</span><span class="w"> </span><span class="n">keywords</span><span class="w"> </span><span class="n">start</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">two</span><span class="w"> </span><span class="n">dashes</span><span class="w"> </span><span class="n">followed</span><span class="w"> </span><span class="n">by</span><span class="w"> </span><span class="n">more</span><span class="w"> </span><span class="n">than</span><span class="w"> </span><span class="n">one</span><span class="w"> </span><span class="n">letter</span><span class="o">.</span><span class="w"></span>
<span class="n">Short</span><span class="w"> </span><span class="n">keywords</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">dash</span><span class="w"> </span><span class="n">followed</span><span class="w"> </span><span class="n">by</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">single</span><span class="w"> </span><span class="n">letter</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">It</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">recommended</span><span class="w"> </span><span class="n">long</span><span class="w"> </span><span class="n">names</span><span class="w"> </span><span class="p">(</span><span class="o">--</span><span class="n">keyword</span><span class="p">)</span><span class="w"> </span><span class="n">should</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">all</span><span class="w"> </span><span class="n">lowercase</span><span class="w"></span>
<span class="w"> </span><span class="n">but</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">case</span><span class="o">-</span><span class="n">sensitive</span><span class="w"> </span><span class="n">by</span><span class="w"> </span><span class="n">default</span><span class="p">,</span><span class="w"> </span><span class="n">unless</span><span class="w"> </span><span class="s2">"set_mode('ignorecase')"</span><span class="w"></span>
<span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">effect</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">Long</span><span class="w"> </span><span class="n">names</span><span class="w"> </span><span class="n">should</span><span class="w"> </span><span class="n">always</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">more</span><span class="w"> </span><span class="n">than</span><span class="w"> </span><span class="n">one</span><span class="w"> </span><span class="n">character</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">The</span><span class="w"> </span><span class="n">recommended</span><span class="w"> </span><span class="n">way</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">have</span><span class="w"> </span><span class="n">short</span><span class="w"> </span><span class="n">names</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">suffix</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">long</span><span class="w"></span>
<span class="w"> </span><span class="n">name</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="p">:</span><span class="n">LETTER</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">definition</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">If</span><span class="w"> </span><span class="n">this</span><span class="w"> </span><span class="n">syntax</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">used</span><span class="w"> </span><span class="n">then</span><span class="w"> </span><span class="n">logical</span><span class="w"> </span><span class="n">shorts</span><span class="w"> </span><span class="n">may</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">combined</span><span class="w"> </span><span class="n">on</span><span class="w"> </span><span class="n">the</span><span class="w"></span>
<span class="w"> </span><span class="n">command</span><span class="w"> </span><span class="n">line</span><span class="w"> </span><span class="n">when</span><span class="w"> </span><span class="s2">"set_mode('strict')"</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">effect</span><span class="o">.</span><span class="w"></span>
<span class="n">SPECIAL</span><span class="w"> </span><span class="n">BEHAVIORS</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">A</span><span class="w"> </span><span class="n">special</span><span class="w"> </span><span class="n">behavior</span><span class="w"> </span><span class="n">occurs</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">keyword</span><span class="w"> </span><span class="n">name</span><span class="w"> </span><span class="n">ends</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="p">::</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">When</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">program</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">called</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">next</span><span class="w"> </span><span class="n">parameter</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">taken</span><span class="w"> </span><span class="k">as</span><span class="w"></span>
<span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="n">even</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">it</span><span class="w"> </span><span class="n">starts</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="o">-.</span><span class="w"> </span><span class="n">This</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="ow">not</span><span class="w"> </span><span class="n">generally</span><span class="w"></span>
<span class="w"> </span><span class="n">recommended</span><span class="w"> </span><span class="n">but</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">useful</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">rare</span><span class="w"> </span><span class="n">cases</span><span class="w"> </span><span class="n">where</span><span class="w"> </span><span class="n">non</span><span class="o">-</span><span class="n">numeric</span><span class="w"></span>
<span class="w"> </span><span class="n">values</span><span class="w"> </span><span class="n">starting</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">dash</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">desired</span><span class="o">.</span><span class="w"></span>
<span class="n">o</span><span class="w"> </span><span class="n">If</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">prototype</span><span class="w"> </span><span class="n">ends</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="s2">"--"</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">special</span><span class="w"> </span><span class="n">mode</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">turned</span><span class="w"></span>
<span class="w"> </span><span class="n">on</span><span class="w"> </span><span class="n">where</span><span class="w"> </span><span class="n">anything</span><span class="w"> </span><span class="n">after</span><span class="w"> </span><span class="s2">"--"</span><span class="w"> </span><span class="n">on</span><span class="w"> </span><span class="n">input</span><span class="w"> </span><span class="n">goes</span><span class="w"> </span><span class="n">into</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">variable</span><span class="w"></span>
<span class="w"> </span><span class="n">REMAINING</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">values</span><span class="w"> </span><span class="n">double</span><span class="o">-</span><span class="n">quoted</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">also</span><span class="w"> </span><span class="n">into</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">array</span><span class="w"> </span><span class="n">ARGS</span><span class="w"></span>
<span class="w"> </span><span class="n">instead</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">becoming</span><span class="w"> </span><span class="n">elements</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">UNNAMED</span><span class="w"> </span><span class="n">array</span><span class="o">.</span><span class="w"> </span><span class="n">This</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="ow">not</span><span class="w"></span>
<span class="w"> </span><span class="n">needed</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">normal</span><span class="w"> </span><span class="n">processing</span><span class="p">,</span><span class="w"> </span><span class="n">but</span><span class="w"> </span><span class="n">was</span><span class="w"> </span><span class="n">needed</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">program</span><span class="w"> </span><span class="n">that</span><span class="w"></span>
<span class="w"> </span><span class="n">needed</span><span class="w"> </span><span class="n">this</span><span class="w"> </span><span class="n">behavior</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">its</span><span class="w"> </span><span class="n">subcommands</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">That</span><span class="w"> </span><span class="k">is</span><span class="p">,</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">normal</span><span class="w"> </span><span class="n">call</span><span class="w"> </span><span class="n">all</span><span class="w"> </span><span class="n">unnamed</span><span class="w"> </span><span class="n">values</span><span class="w"> </span><span class="n">go</span><span class="w"> </span><span class="n">into</span><span class="w"> </span><span class="n">UNNAMED</span><span class="w"></span>
<span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">ARGS</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">REMAINING</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">ignored</span><span class="o">.</span><span class="w"> </span><span class="n">So</span><span class="w"> </span><span class="k">for</span><span class="w"></span>
<span class="w"> </span><span class="n">call</span><span class="w"> </span><span class="n">set_args</span><span class="p">(</span><span class="s1">'-x 10 -y 20 '</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">A</span><span class="w"> </span><span class="n">program</span><span class="w"> </span><span class="n">invocation</span><span class="w"> </span><span class="n">such</span><span class="w"> </span><span class="k">as</span><span class="w"></span>
<span class="w"> </span><span class="n">xx</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">b</span><span class="w"> </span><span class="n">c</span><span class="w"> </span><span class="o">--</span><span class="w"> </span><span class="n">A</span><span class="w"> </span><span class="n">B</span><span class="w"> </span><span class="n">C</span><span class="w"> </span><span class="s2">" dd "</span><span class="w"></span>
<span class="w"> </span><span class="n">results</span><span class="w"> </span><span class="ow">in</span><span class="w"></span>
<span class="w"> </span><span class="n">UNNAMED</span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="s1">'a'</span><span class="p">,</span><span class="s1">'b'</span><span class="p">,</span><span class="s1">'c'</span><span class="p">,</span><span class="s1">'A'</span><span class="p">,</span><span class="s1">'B'</span><span class="p">,</span><span class="s1">'C'</span><span class="p">,</span><span class="s1">' dd'</span><span class="p">]</span><span class="w"></span>
<span class="w"> </span><span class="n">REMAINING</span><span class="o">=</span><span class="w"> </span><span class="s1">''</span><span class="w"></span>
<span class="w"> </span><span class="n">ARGS</span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="n">character</span><span class="p">(</span><span class="n">len</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="p">::</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="o">!</span><span class="w"> </span><span class="n">ie</span><span class="p">,</span><span class="w"> </span><span class="n">an</span><span class="w"> </span><span class="n">empty</span><span class="w"> </span><span class="n">character</span><span class="w"> </span><span class="n">array</span><span class="w"></span>
<span class="w"> </span><span class="n">Whereas</span><span class="w"></span>
<span class="w"> </span><span class="n">call</span><span class="w"> </span><span class="n">set_args</span><span class="p">(</span><span class="s1">'-x 10 -y 20 --'</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">generates</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">following</span><span class="w"> </span><span class="n">output</span><span class="w"> </span><span class="n">from</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">same</span><span class="w"> </span><span class="n">program</span><span class="w"> </span><span class="n">execution</span><span class="p">:</span><span class="w"></span>
<span class="w"> </span><span class="n">UNNAMED</span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="s1">'a'</span><span class="p">,</span><span class="s1">'b'</span><span class="p">,</span><span class="s1">'c'</span><span class="p">]</span><span class="w"></span>
<span class="w"> </span><span class="n">REMAINING</span><span class="o">=</span><span class="w"> </span><span class="s1">'"A" "B" "C" " dd "'</span><span class="w"></span>
<span class="w"> </span><span class="n">ARGS</span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="s1">'A'</span><span class="p">,</span><span class="s1">'B'</span><span class="p">,</span><span class="s1">'C,'</span><span class="w"> </span><span class="n">dd</span><span class="s1">']</span>
</code></pre></div>
<h2 id="usage-notes">USAGE NOTES</h2>
<div class="codehilite"><pre><span></span><code><span class="w"> </span><span class="n">When</span><span class="w"> </span><span class="n">invoking</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">program</span><span class="w"> </span><span class="n">line</span><span class="w"> </span><span class="n">note</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="p">(</span><span class="n">subject</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">change</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">following</span><span class="w"> </span><span class="n">restrictions</span><span class="w"> </span><span class="p">(</span><span class="n">which</span><span class="w"> </span><span class="n">often</span><span class="w"> </span><span class="n">differ</span><span class="w"> </span><span class="n">between</span><span class="w"> </span><span class="n">various</span><span class="w"></span>
<span class="w"> </span><span class="n">command</span><span class="o">-</span><span class="n">line</span><span class="w"> </span><span class="n">parsers</span><span class="p">):</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">values</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">duplicate</span><span class="w"> </span><span class="n">keywords</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">appended</span><span class="w"> </span><span class="n">together</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">space</span><span class="w"></span>
<span class="w"> </span><span class="n">separator</span><span class="w"> </span><span class="n">when</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">command</span><span class="w"> </span><span class="n">line</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">executed</span><span class="w"> </span><span class="n">by</span><span class="w"> </span><span class="n">default</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">shuffling</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="ow">not</span><span class="w"> </span><span class="n">supported</span><span class="o">.</span><span class="w"> </span><span class="n">Values</span><span class="w"> </span><span class="n">immediately</span><span class="w"> </span><span class="n">follow</span><span class="w"> </span><span class="n">their</span><span class="w"></span>
<span class="w"> </span><span class="n">keywords</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">Only</span><span class="w"> </span><span class="n">short</span><span class="w"> </span><span class="n">Boolean</span><span class="w"> </span><span class="n">keywords</span><span class="w"> </span><span class="n">can</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">bundled</span><span class="w"> </span><span class="n">together</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">If</span><span class="w"> </span><span class="n">allowing</span><span class="w"> </span><span class="n">bundling</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">desired</span><span class="w"> </span><span class="n">call</span><span class="w"> </span><span class="s2">"set_mode('strict')"</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">This</span><span class="w"> </span><span class="n">will</span><span class="w"> </span><span class="n">require</span><span class="w"> </span><span class="n">prefixing</span><span class="w"> </span><span class="n">long</span><span class="w"> </span><span class="n">names</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="s2">"--"</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">short</span><span class="w"></span>
<span class="w"> </span><span class="n">names</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="s2">"-"</span><span class="o">.</span><span class="w"> </span><span class="n">Otherwise</span><span class="w"> </span><span class="n">M_CLI2</span><span class="w"> </span><span class="n">relaxes</span><span class="w"> </span><span class="n">that</span><span class="w"> </span><span class="n">requirement</span><span class="w"></span>
<span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">mostly</span><span class="w"> </span><span class="n">does</span><span class="w"> </span><span class="ow">not</span><span class="w"> </span><span class="n">care</span><span class="w"> </span><span class="n">what</span><span class="w"> </span><span class="n">prefix</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">used</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">keyword</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">But</span><span class="w"> </span><span class="n">this</span><span class="w"> </span><span class="n">would</span><span class="w"> </span><span class="n">make</span><span class="w"> </span><span class="n">it</span><span class="w"> </span><span class="n">unclear</span><span class="w"> </span><span class="n">what</span><span class="w"> </span><span class="n">was</span><span class="w"> </span><span class="n">meant</span><span class="w"> </span><span class="n">by</span><span class="w"> </span><span class="s2">"-ox"</span><span class="w"> </span><span class="k">if</span><span class="w"></span>
<span class="w"> </span><span class="n">allowed</span><span class="w"> </span><span class="n">options</span><span class="w"> </span><span class="n">were</span><span class="w"> </span><span class="s2">"-o F -x F --ox F "</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">example</span><span class="p">,</span><span class="w"> </span><span class="n">so</span><span class="w"></span>
<span class="w"> </span><span class="s2">"strict"</span><span class="w"> </span><span class="n">mode</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">required</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">remove</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">ambiguity</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">parameter</span><span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">just</span><span class="w"> </span><span class="s2">"-"</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">supplied</span><span class="w"> </span><span class="n">it</span><span class="w"> </span><span class="k">is</span><span class="w"></span>
<span class="w"> </span><span class="n">converted</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">string</span><span class="w"> </span><span class="s2">"stdin"</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">values</span><span class="w"> </span><span class="ow">not</span><span class="w"> </span><span class="n">needed</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">keyword</span><span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="n">go</span><span class="w"> </span><span class="n">into</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">character</span><span class="w"></span>
<span class="w"> </span><span class="n">array</span><span class="w"> </span><span class="s2">"UNNAMED"</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">In</span><span class="w"> </span><span class="n">addition</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">keyword</span><span class="w"> </span><span class="s2">"--"</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">encountered</span><span class="w"> </span><span class="n">on</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">command</span><span class="w"></span>
<span class="w"> </span><span class="n">line</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">rest</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">command</span><span class="w"> </span><span class="n">line</span><span class="w"> </span><span class="n">goes</span><span class="w"> </span><span class="n">into</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">character</span><span class="w"> </span><span class="n">array</span><span class="w"></span>
<span class="w"> </span><span class="s2">"UNNAMED"</span><span class="o">.</span><span class="w"></span>
</code></pre></div>
<h2 id="example">EXAMPLE</h2>
<p>Sample program:</p>
<div class="codehilite"><pre><span></span><code> <span class="nv">program</span> <span class="nv">demo_set_args</span>
<span class="nv">use</span> <span class="nv">M_CLI2</span>, <span class="nv">only</span> : <span class="nv">filenames</span><span class="o">=></span><span class="nv">unnamed</span>, <span class="nv">set_args</span>, <span class="nv">get_args</span>
<span class="nv">use</span> <span class="nv">M_CLI2</span>, <span class="nv">only</span> : <span class="nv">get_args_fixed_size</span>
<span class="nv">implicit</span> <span class="nv">none</span>
<span class="nv">integer</span> :: <span class="nv">i</span>
<span class="o">!</span> <span class="nv">DEFINE</span> <span class="nv">ARGS</span>
<span class="nv">real</span> :: <span class="nv">x</span>, <span class="nv">y</span>, <span class="nv">z</span>
<span class="nv">real</span> :: <span class="nv">p</span><span class="ss">(</span><span class="mi">3</span><span class="ss">)</span>
<span class="nv">character</span><span class="ss">(</span><span class="nv">len</span><span class="o">=</span>:<span class="ss">)</span>,<span class="nv">allocatable</span> :: <span class="nv">title</span>
<span class="nv">logical</span> :: <span class="nv">l</span>, <span class="nv">lbig</span>
<span class="nv">integer</span>,<span class="nv">allocatable</span> :: <span class="nv">ints</span><span class="ss">(</span>:<span class="ss">)</span>
<span class="o">!</span>
<span class="o">!</span> <span class="nv">DEFINE</span> <span class="nv">COMMAND</span> <span class="ss">(</span><span class="nv">TO</span> <span class="nv">SET</span> <span class="nv">INITIAL</span> <span class="nv">VALUES</span> <span class="nv">AND</span> <span class="nv">ALLOWED</span> <span class="nv">KEYWORDS</span><span class="ss">)</span>
<span class="o">!</span> <span class="nv">AND</span> <span class="nv">READ</span> <span class="nv">COMMAND</span> <span class="nv">LINE</span>
<span class="k">call</span> <span class="nl">set_args</span><span class="ss">(</span><span class="s1">'</span><span class="s"> &</span>
<span class="o">!</span> <span class="nv">reals</span>
<span class="o">&</span> <span class="o">-</span><span class="nv">x</span> <span class="mi">1</span> <span class="o">-</span><span class="nv">y</span> <span class="mi">2</span>.<span class="mi">3</span> <span class="o">-</span><span class="nv">z</span> <span class="mi">3</span>.<span class="mi">4</span><span class="nv">e2</span> <span class="o">&</span>
<span class="o">!</span> <span class="nv">integer</span> <span class="nv">array</span>
<span class="o">&</span> <span class="o">-</span><span class="nv">p</span> <span class="o">-</span><span class="mi">1</span>,<span class="o">-</span><span class="mi">2</span>,<span class="o">-</span><span class="mi">3</span> <span class="o">&</span>
<span class="o">!</span> <span class="nv">always</span> <span class="nv">double</span><span class="o">-</span><span class="nv">quote</span> <span class="nv">strings</span>
<span class="o">&</span> <span class="o">--</span><span class="nv">title</span> <span class="s2">"</span><span class="s">my title</span><span class="s2">"</span> <span class="o">&</span>
<span class="o">!</span> <span class="nv">string</span> <span class="nv">should</span> <span class="nv">be</span> <span class="nv">a</span> <span class="nv">single</span> <span class="nv">character</span> <span class="nv">at</span> <span class="nv">a</span> <span class="nv">minimum</span>
<span class="o">&</span> <span class="o">--</span><span class="nv">label</span> <span class="s2">"</span><span class="s"> </span><span class="s2">"</span>, <span class="o">&</span>
<span class="o">!</span> <span class="nv">set</span> <span class="nv">all</span> <span class="nv">logical</span> <span class="nv">values</span> <span class="nv">to</span> <span class="nv">F</span>
<span class="o">&</span> <span class="o">-</span><span class="nv">l</span> <span class="nv">F</span> <span class="o">-</span><span class="nv">L</span> <span class="nv">F</span> <span class="o">&</span>
<span class="o">!</span> <span class="nv">set</span> <span class="nv">allocatable</span> <span class="nv">size</span> <span class="nv">to</span> <span class="nv">zero</span> <span class="k">if</span> <span class="nv">you</span> <span class="nv">like</span> <span class="nv">by</span> <span class="nv">using</span> <span class="nv">a</span> <span class="nv">delimiter</span>
<span class="o">&</span> <span class="o">--</span><span class="nv">ints</span> , <span class="o">&</span>
<span class="o">&</span> <span class="s1">'</span><span class="s">)</span>
<span class="o">!</span> <span class="nv">ASSIGN</span> <span class="nv">VALUES</span> <span class="nv">TO</span> <span class="nv">ELEMENTS</span>
<span class="o">!</span> <span class="nv">SCALARS</span>
<span class="k">call</span> <span class="nl">get_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">x</span><span class="s1">'</span>,<span class="nv">x</span><span class="ss">)</span>
<span class="k">call</span> <span class="nl">get_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">y</span><span class="s1">'</span>,<span class="nv">y</span><span class="ss">)</span>
<span class="k">call</span> <span class="nl">get_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">z</span><span class="s1">'</span>,<span class="nv">z</span><span class="ss">)</span>
<span class="k">call</span> <span class="nl">get_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">l</span><span class="s1">'</span>,<span class="nv">l</span><span class="ss">)</span>
<span class="k">call</span> <span class="nl">get_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">L</span><span class="s1">'</span>,<span class="nv">lbig</span><span class="ss">)</span>
<span class="k">call</span> <span class="nl">get_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">ints</span><span class="s1">'</span>,<span class="nv">ints</span><span class="ss">)</span> <span class="o">!</span> <span class="nv">ALLOCATABLE</span> <span class="nv">ARRAY</span>
<span class="k">call</span> <span class="nl">get_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">title</span><span class="s1">'</span>,<span class="nv">title</span><span class="ss">)</span> <span class="o">!</span> <span class="nv">ALLOCATABLE</span> <span class="nv">STRING</span>
<span class="k">call</span> <span class="nl">get_args_fixed_size</span><span class="ss">(</span><span class="s1">'</span><span class="s">p</span><span class="s1">'</span>,<span class="nv">p</span><span class="ss">)</span> <span class="o">!</span> <span class="nv">NON</span><span class="o">-</span><span class="nv">ALLOCATABLE</span> <span class="nv">ARRAY</span>
<span class="o">!</span> <span class="nv">USE</span> <span class="nv">VALUES</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">x=</span><span class="s1">'</span>,<span class="nv">x</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">y=</span><span class="s1">'</span>,<span class="nv">y</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">z=</span><span class="s1">'</span>,<span class="nv">z</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">p=</span><span class="s1">'</span>,<span class="nv">p</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">title=</span><span class="s1">'</span>,<span class="nv">title</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">ints=</span><span class="s1">'</span>,<span class="nv">ints</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">l=</span><span class="s1">'</span>,<span class="nv">l</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="o">*</span><span class="ss">)</span><span class="s1">'</span><span class="s">L=</span><span class="s1">'</span>,<span class="nv">lbig</span>
<span class="o">!</span> <span class="nv">UNNAMED</span> <span class="nv">VALUES</span>
<span class="k">if</span><span class="ss">(</span><span class="nv">size</span><span class="ss">(</span><span class="nv">filenames</span><span class="ss">)</span> <span class="o">></span> <span class="mi">0</span><span class="ss">)</span><span class="k">then</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="s1">'</span><span class="s">(i6.6,3a)</span><span class="s1">'</span><span class="ss">)(</span><span class="nv">i</span>,<span class="s1">'</span><span class="s">[</span><span class="s1">'</span>,<span class="nv">filenames</span><span class="ss">(</span><span class="nv">i</span><span class="ss">)</span>,<span class="s1">'</span><span class="s">]</span><span class="s1">'</span>,<span class="nv">i</span><span class="o">=</span><span class="mi">1</span>,<span class="nv">size</span><span class="ss">(</span><span class="nv">filenames</span><span class="ss">))</span>
<span class="k">endif</span>
<span class="k">end</span> <span class="nv">program</span> <span class="nv">demo_set_args</span>
</code></pre></div>
<h2 id="response-files">RESPONSE FILES</h2>
<p>If you have no interest in using external files as abbreviations
you can ignore this section. Otherwise, before calling set_args(3f)
add:</p>
<div class="codehilite"><pre><span></span><code> use M_CLI2, only : set_mode
call set_mode('response_file')
</code></pre></div>
<p>M_CLI2 Response files are small files containing CLI (Command Line
Interface) arguments that end with “.rsp” that can be used when command
lines are so long that they would exceed line length limits or so complex
that it is useful to have a platform-independent method of creating
an abbreviation.</p>
<p>Shell aliases and scripts are often used for similar purposes (and
allow for much more complex conditional execution, of course), but
they generally cannot be used to overcome line length limits and are
typically platform-specific.</p>
<p>Examples of commands that support similar response files are the Clang
and Intel compilers, although there is no standard format for the files.</p>
<p>They are read if you add options of the syntax “@NAME” as the FIRST
parameters on your program command line calls. They are not recursive –
that is, an option in a response file cannot be given the value “@NAME2”
to call another response file.</p>
<p>More than one response name may appear on a command line.</p>
<p>They are case-sensitive names.</p>
<p>Note “@” s a special character in Powershell, and requires being escaped
with a grave character.</p>
<p>LOCATING RESPONSE FILES</p>
<p>A search for the response file always starts with the current directory.
The search then proceeds to look in any additional directories specified
with the colon-delimited environment variable CLI_RESPONSE_PATH.</p>
<p>The first resource file found that results in lines being processed
will be used and processing stops after that first match is found. If
no match is found an error occurs and the program is stopped.</p>
<p>RESPONSE FILE SECTIONS</p>
<p>A simple response file just has options for calling the program in it
prefixed with the word “options”.
But they can also contain section headers to denote selections that are
only executed when a specific OS is being used, print messages, and
execute system commands.</p>
<p>SEARCHING FOR OSTYPE IN REGULAR FILES</p>
<p>So assuming the name @NAME was specified on the command line a file
named NAME.rsp will be searched for in all the search directories
and then in that file a string that starts with the string @OSTYPE
(if the environment variables $OS and $OSTYPE are not blank. $OSTYPE
takes precedence over $OS).</p>
<p>SEARCHING FOR UNLABELED DIRECTIVES IN REGULAR FILES</p>
<p>Then, the same files will be searched for lines above any line starting
with “@”. That is, if there is no special section for the current OS
it just looks at the top of the file for unlabeled options.</p>
<p>SEARCHING FOR OSTYPE AND NAME IN THE COMPOUND FILE</p>
<p>In addition or instead of files with the same name as the @NAME option
on the command line, you can have one file named after the executable
name that contains multiple abbreviation names.</p>
<p>So if your program executable is named EXEC you create a single file
called EXEC.rsp and can append all the simple files described above
separating them with lines of the form @OSTYPE@NAME or just @NAME.</p>
<p>So if no specific file for the abbreviation is found a file called
“EXEC.rsp” is searched for where “EXEC” is the name of the executable.
This file is always a “compound” response file that uses the following format:</p>
<p>Any compound EXEC.rsp file found in the current or searched directories
will be searched for the string @OSTYPE@NAME first.</p>
<p>Then if nothing is found, the less specific line @NAME is searched for.</p>
<p>THE SEARCH IS OVER</p>
<p>Sounds complicated but actually works quite intuitively. Make a file in
the current directory and put options in it and it will be used. If that
file ends up needing different cases for different platforms add a line
like “@Linux” to the file and some more lines and that will only be
executed if the environment variable OSTYPE or OS is “Linux”. If no match
is found for named sections the lines at the top before any “@” lines
will be used as a default if no match is found.</p>
<p>If you end up using a lot of files like this you can combine them all
together and put them into a file called “program_name”.rsp and just
put lines like @NAME or @OSTYPE@NAME at that top of each selection.</p>
<p>Now, back to the details on just what you can put in the files.</p>
<h2 id="specification-for-response-files">SPECIFICATION FOR RESPONSE FILES</h2>
<p>SIMPLE RESPONSE FILES</p>
<p>The first word of a line is special and has the following meanings:</p>
<div class="codehilite"><pre><span></span><code><span class="n">options</span><span class="o">|-</span><span class="w"> </span><span class="n">Command</span><span class="w"> </span><span class="n">options</span><span class="w"> </span><span class="n">following</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">rules</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">SET_ARGS</span><span class="p">(</span><span class="mi">3</span><span class="n">f</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">prototype</span><span class="o">.</span><span class="w"> </span><span class="n">So</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">It</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">preferred</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">specify</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">all</span><span class="w"> </span><span class="n">options</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">double</span><span class="o">-</span><span class="n">quote</span><span class="w"> </span><span class="n">strings</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">give</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">blank</span><span class="w"> </span><span class="n">string</span><span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="s2">" "</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">use</span><span class="w"> </span><span class="n">F</span><span class="o">|</span><span class="n">T</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">lists</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">logicals</span><span class="p">,</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="n">lists</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">numbers</span><span class="w"> </span><span class="n">should</span><span class="w"> </span><span class="n">be</span><span class="w"> </span><span class="n">comma</span><span class="o">-</span><span class="n">delimited</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">o</span><span class="w"> </span><span class="o">--</span><span class="n">usage</span><span class="p">,</span><span class="w"> </span><span class="o">--</span><span class="n">help</span><span class="p">,</span><span class="w"> </span><span class="o">--</span><span class="n">version</span><span class="p">,</span><span class="w"> </span><span class="o">--</span><span class="n">verbose</span><span class="p">,</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">unknown</span><span class="w"></span>
<span class="w"> </span><span class="n">options</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">ignored</span><span class="o">.</span><span class="w"></span>
<span class="n">comment</span><span class="o">|</span><span class="c1"># Line is a comment line</span><span class="w"></span>
<span class="n">system</span><span class="o">|!</span><span class="w"> </span><span class="n">System</span><span class="w"> </span><span class="n">command</span><span class="o">.</span><span class="w"></span>
<span class="w"> </span><span class="n">System</span><span class="w"> </span><span class="n">commands</span><span class="w"> </span><span class="n">are</span><span class="w"> </span><span class="n">executed</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">simple</span><span class="w"> </span><span class="n">call</span><span class="w"> </span><span class="n">to</span><span class="w"></span>
<span class="w"> </span><span class="n">system</span><span class="w"> </span><span class="p">(</span><span class="n">so</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">cd</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="n">setting</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">shell</span><span class="w"> </span><span class="n">variable</span><span class="w"></span>
<span class="w"> </span><span class="n">would</span><span class="w"> </span><span class="ow">not</span><span class="w"> </span><span class="n">effect</span><span class="w"> </span><span class="n">subsequent</span><span class="w"> </span><span class="n">lines</span><span class="p">,</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">example</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">BEFORE</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">command</span><span class="w"> </span><span class="n">being</span><span class="w"> </span><span class="n">processed</span><span class="o">.</span><span class="w"></span>
<span class="nb">print</span><span class="o">|></span><span class="w"> </span><span class="n">Message</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">screen</span><span class="w"></span>
<span class="n">stop</span><span class="w"> </span><span class="n">display</span><span class="w"> </span><span class="n">message</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">stop</span><span class="w"> </span><span class="n">program</span><span class="o">.</span><span class="w"></span>
</code></pre></div>
<p>NOTE: system commands are executed when encountered, but options are
gathered from multiple option lines and passed together at the end of
processing of the block; so all commands will be executed BEFORE the
command for which options are being supplied no matter where they occur.</p>
<p>So if a program that does nothing but echos its parameters</p>
<div class="codehilite"><pre><span></span><code><span class="nv">program</span> <span class="nv">testit</span>
<span class="nv">use</span> <span class="nv">M_CLI2</span>, <span class="nv">only</span> : <span class="nv">set_args</span>, <span class="nv">rget</span>, <span class="nv">sget</span>, <span class="nv">lget</span>, <span class="nv">set_mode</span>
<span class="nv">implicit</span> <span class="nv">none</span>
<span class="nv">real</span> :: <span class="nv">x</span>,<span class="nv">y</span> <span class="c1">; namelist/args/ x,y</span>
<span class="nv">character</span><span class="ss">(</span><span class="nv">len</span><span class="o">=</span>:<span class="ss">)</span>,<span class="nv">allocatable</span> :: <span class="nv">title</span> <span class="c1">; namelist/args/ title</span>
<span class="nv">logical</span> :: <span class="nv">big</span> <span class="c1">; namelist/args/ big</span>
<span class="k">call</span> <span class="nl">set_mode</span><span class="ss">(</span><span class="s1">'</span><span class="s">response_file</span><span class="s1">'</span><span class="ss">)</span>
<span class="k">call</span> <span class="nl">set_args</span><span class="ss">(</span><span class="s1">'</span><span class="s">-x 10.0 -y 20.0 --title "my title" --big F</span><span class="s1">'</span><span class="ss">)</span>
<span class="nv">x</span><span class="o">=</span><span class="nv">rget</span><span class="ss">(</span><span class="s1">'</span><span class="s">x</span><span class="s1">'</span><span class="ss">)</span>
<span class="nv">y</span><span class="o">=</span><span class="nv">rget</span><span class="ss">(</span><span class="s1">'</span><span class="s">y</span><span class="s1">'</span><span class="ss">)</span>
<span class="nv">title</span><span class="o">=</span><span class="nv">sget</span><span class="ss">(</span><span class="s1">'</span><span class="s">title</span><span class="s1">'</span><span class="ss">)</span>
<span class="nv">big</span><span class="o">=</span><span class="nv">lget</span><span class="ss">(</span><span class="s1">'</span><span class="s">big</span><span class="s1">'</span><span class="ss">)</span>
<span class="nv">write</span><span class="ss">(</span><span class="o">*</span>,<span class="nv">nml</span><span class="o">=</span><span class="nv">args</span><span class="ss">)</span>
<span class="k">end</span> <span class="nv">program</span> <span class="nv">testit</span>
</code></pre></div>
<p>And a file in the current directory called “a.rsp” contains</p>
<div class="codehilite"><pre><span></span><code> # <span class="nv">defaults</span> <span class="k">for</span> <span class="nv">project</span> <span class="nv">A</span>
<span class="nv">options</span> <span class="o">-</span><span class="nv">x</span> <span class="mi">1000</span> <span class="o">-</span><span class="nv">y</span> <span class="mi">9999</span>
<span class="nv">options</span> <span class="o">--</span><span class="nv">title</span> <span class="s2">"</span><span class="s"> </span><span class="s2">"</span>
<span class="nv">options</span> <span class="o">--</span><span class="nv">big</span> <span class="nv">T</span>
</code></pre></div>
<p>The program could be called with</p>
<div class="codehilite"><pre><span></span><code><span class="w"> </span><span class="err">$</span><span class="n">myprog</span><span class="w"> </span><span class="err">#</span><span class="w"> </span><span class="n">normal</span><span class="w"> </span><span class="k">call</span><span class="w"></span>
<span class="w"> </span><span class="n">X</span><span class="o">=</span><span class="mf">10.0</span><span class="w"> </span><span class="n">Y</span><span class="o">=</span><span class="mf">20.0</span><span class="w"> </span><span class="n">TITLE</span><span class="o">=</span><span class="ss">"my title"</span><span class="w"></span>
<span class="w"> </span><span class="err">$</span><span class="n">myprog</span><span class="w"> </span><span class="nv">@a</span><span class="w"> </span><span class="err">#</span><span class="w"> </span><span class="n">change</span><span class="w"> </span><span class="n">defaults</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="n">specified</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="ss">"a.rsp"</span><span class="w"></span>
<span class="w"> </span><span class="n">X</span><span class="o">=</span><span class="mf">1000.0</span><span class="w"> </span><span class="n">Y</span><span class="o">=</span><span class="mf">9999.0</span><span class="w"> </span><span class="n">TITLE</span><span class="o">=</span><span class="ss">" "</span><span class="w"></span>
<span class="w"> </span><span class="err">#</span><span class="w"> </span><span class="n">change</span><span class="w"> </span><span class="n">defaults</span><span class="w"> </span><span class="n">but</span><span class="w"> </span><span class="k">use</span><span class="w"> </span><span class="ow">any</span><span class="w"> </span><span class="k">option</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="n">normal</span><span class="w"> </span><span class="k">to</span><span class="w"> </span><span class="n">override</span><span class="w"> </span><span class="n">defaults</span><span class="w"></span>
<span class="w"> </span><span class="err">$</span><span class="n">myprog</span><span class="w"> </span><span class="nv">@a</span><span class="w"> </span><span class="o">-</span><span class="n">y</span><span class="w"> </span><span class="mi">1234</span><span class="w"></span>
<span class="w"> </span><span class="n">X</span><span class="o">=</span><span class="mf">1000.0</span><span class="w"> </span><span class="n">Y</span><span class="o">=</span><span class="mf">1234.0</span><span class="w"> </span><span class="n">TITLE</span><span class="o">=</span><span class="ss">" "</span><span class="w"></span>
</code></pre></div>
<p>COMPOUND RESPONSE FILES</p>
<p>A compound response file has the same basename as the executable with a
“.rsp” suffix added. So if your program is named “myprg” the filename
must be “myprg.rsp”.</p>
<div class="codehilite"><pre><span></span><code><span class="n">Note</span><span class="w"> </span><span class="n">that</span><span class="w"> </span><span class="n">here</span><span class="w"> </span><span class="n n-Quoted">`basename`</span><span class="w"> </span><span class="n">means</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="k">last</span><span class="w"> </span><span class="n">leaf</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="n">the</span><span class="w"></span>
<span class="k">name</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">program</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="n">returned</span><span class="w"> </span><span class="k">by</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">Fortran</span><span class="w"> </span><span class="n">intrinsic</span><span class="w"></span>
<span class="n">GET_COMMAND_ARGUMENT</span><span class="p">(</span><span class="mi">0</span><span class="p">,...)</span><span class="w"> </span><span class="n">trimmed</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="n">anything</span><span class="w"> </span><span class="k">after</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">period</span><span class="w"> </span><span class="p">(</span><span class="s2">"."</span><span class="p">),</span><span class="w"></span>
<span class="n">so</span><span class="w"> </span><span class="n">it</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">good</span><span class="w"> </span><span class="n">idea</span><span class="w"> </span><span class="k">not</span><span class="w"> </span><span class="k">to</span><span class="w"> </span><span class="k">use</span><span class="w"> </span><span class="n">hidden</span><span class="w"> </span><span class="n">files</span><span class="p">.</span><span class="w"></span>
</code></pre></div>
<p>Unlike simple response files compound response files can contain multiple
setting names.</p>
<p>Specifically in a compound file
if the environment variable $OSTYPE (first) or $OS is set the first search
will be for a line of the form (no leading spaces should be used):</p>
<div class="codehilite"><pre><span></span><code><span class="nv">@OSTYPE@alias_name</span><span class="w"></span>
</code></pre></div>
<p>If no match or if the environment variables $OSTYPE and $OS were not
set or a match is not found then a line of the form</p>
<div class="codehilite"><pre><span></span><code><span class="nv">@alias_name</span><span class="w"></span>
</code></pre></div>
<p>is searched for in simple or compound files. If found subsequent lines
will be ignored that start with “@” until a line not starting with
“@” is encountered. Lines will then be processed until another line
starting with “@” is found or end-of-file is encountered.</p>
<p>COMPOUND RESPONSE FILE EXAMPLE
An example compound file</p>
<div class="codehilite"><pre><span></span><code>#################<span class="w"></span>
<span class="p">@</span><span class="k">if</span><span class="w"></span>
<span class="o">></span><span class="w"> </span><span class="n">RUNNING</span><span class="w"> </span><span class="n">TESTS</span><span class="w"> </span><span class="n">USING</span><span class="w"> </span><span class="n">RELEASE</span><span class="w"> </span><span class="n">VERSION</span><span class="w"> </span><span class="n">AND</span><span class="w"> </span><span class="n">ifort</span><span class="w"></span>
<span class="n">options</span><span class="w"> </span><span class="s">test</span><span class="w"> </span><span class="o">--</span><span class="nb">release</span><span class="w"> </span><span class="o">--</span><span class="n">compiler</span><span class="w"> </span><span class="n">ifort</span><span class="w"></span>
#################<span class="w"></span>
<span class="p">@</span><span class="n">gf</span><span class="w"></span>
<span class="o">></span><span class="w"> </span><span class="n">RUNNING</span><span class="w"> </span><span class="n">TESTS</span><span class="w"> </span><span class="n">USING</span><span class="w"> </span><span class="n">RELEASE</span><span class="w"> </span><span class="n">VERSION</span><span class="w"> </span><span class="n">AND</span><span class="w"> </span><span class="n">gfortran</span><span class="w"></span>
<span class="n">options</span><span class="w"> </span><span class="s">test</span><span class="w"> </span><span class="o">--</span><span class="nb">release</span><span class="w"> </span><span class="o">--</span><span class="n">compiler</span><span class="w"> </span><span class="n">gfortran</span><span class="w"></span>
#################<span class="w"></span>
<span class="p">@</span><span class="n">nv</span><span class="w"></span>
<span class="o">></span><span class="w"> </span><span class="n">RUNNING</span><span class="w"> </span><span class="n">TESTS</span><span class="w"> </span><span class="n">USING</span><span class="w"> </span><span class="n">RELEASE</span><span class="w"> </span><span class="n">VERSION</span><span class="w"> </span><span class="n">AND</span><span class="w"> </span><span class="n">nvfortran</span><span class="w"></span>
<span class="n">options</span><span class="w"> </span><span class="s">test</span><span class="w"> </span><span class="o">--</span><span class="nb">release</span><span class="w"> </span><span class="o">--</span><span class="n">compiler</span><span class="w"> </span><span class="n">nvfortran</span><span class="w"></span>
#################<span class="w"></span>
<span class="p">@</span><span class="n">nag</span><span class="w"></span>
<span class="o">></span><span class="w"> </span><span class="n">RUNNING</span><span class="w"> </span><span class="n">TESTS</span><span class="w"> </span><span class="n">USING</span><span class="w"> </span><span class="n">RELEASE</span><span class="w"> </span><span class="n">VERSION</span><span class="w"> </span><span class="n">AND</span><span class="w"> </span><span class="n">nagfor</span><span class="w"></span>
<span class="n">options</span><span class="w"> </span><span class="s">test</span><span class="w"> </span><span class="o">--</span><span class="nb">release</span><span class="w"> </span><span class="o">--</span><span class="n">compiler</span><span class="w"> </span><span class="n">nagfor</span><span class="w"></span>
#<span class="w"></span>
#################<span class="w"></span>
#<span class="w"> </span><span class="n">OS</span><span class="o">-</span><span class="n">specific</span><span class="w"> </span><span class="n">example</span><span class="p">:</span><span class="w"></span>
<span class="p">@</span><span class="n">Linux</span><span class="p">@</span><span class="n">install</span><span class="w"></span>
#<span class="w"></span>
#<span class="w"> </span><span class="n">install</span><span class="w"> </span><span class="n">executables</span><span class="w"> </span><span class="n">in</span><span class="w"> </span><span class="n">directory</span><span class="w"> </span><span class="p">(</span><span class="n">assuming</span><span class="w"> </span><span class="n">install</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span><span class="w"> </span><span class="n">exists</span><span class="p">)</span><span class="w"></span>
#<span class="w"></span>
<span class="nb">system</span><span class="w"> </span><span class="nb">mkdir</span><span class="w"> </span><span class="o">-</span><span class="n">p</span><span class="w"> </span><span class="o">~/</span><span class="p">.</span><span class="n">local</span><span class="o">/</span><span class="n">bin</span><span class="w"></span>
<span class="n">options</span><span class="w"> </span><span class="s">run</span><span class="w"> </span><span class="o">--</span><span class="nb">release</span><span class="w"> </span><span class="n">T</span><span class="w"> </span><span class="o">--</span><span class="n">runner</span><span class="w"> </span><span class="s">"install -vbp -m 0711 -t ~/.local/bin"</span><span class="w"></span>
<span class="p">@</span><span class="n">install</span><span class="w"></span>
<span class="n">STOP</span><span class="w"> </span><span class="s">INSTALL</span><span class="w"> </span><span class="s">NOT</span><span class="w"> </span><span class="s">SUPPORTED</span><span class="w"> </span><span class="s">ON</span><span class="w"> </span><span class="s">THIS</span><span class="w"> </span><span class="s">PLATFORM</span><span class="w"> </span><span class="s">OR</span><span class="w"> </span><span class="s">$OSTYPE</span><span class="w"> </span><span class="s">NOT</span><span class="w"> </span><span class="s">SET</span><span class="w"></span>
#<span class="w"></span>
#################<span class="w"></span>
<span class="p">@</span><span class="n">fpm</span><span class="p">@</span><span class="n">testall</span><span class="w"></span>
#<span class="w"></span>
<span class="sx">!fpm test --compiler nvfortran</span><span class="w"></span>
<span class="sx">!fpm test --compiler ifort</span><span class="w"></span>
<span class="sx">!fpm test --compiler gfortran</span><span class="w"></span>
<span class="sx">!fpm test --compiler nagfor</span><span class="w"></span>
<span class="n">STOP</span><span class="w"> </span><span class="s">tests</span><span class="w"> </span><span class="s">complete.</span><span class="w"> </span><span class="s">Any</span><span class="w"> </span><span class="s">additional</span><span class="w"> </span><span class="s">parameters</span><span class="w"> </span><span class="s">were</span><span class="w"> </span><span class="s">ignored</span><span class="w"></span>
#################<span class="w"></span>
</code></pre></div>
<p>Would be used like</p>
<div class="codehilite"><pre><span></span><code><span class="n">fpm</span><span class="w"> </span><span class="nv">@install</span><span class="w"></span>
<span class="n">fpm</span><span class="w"> </span><span class="nv">@nag</span><span class="w"> </span><span class="o">--</span><span class="w"></span>
<span class="n">fpm</span><span class="w"> </span><span class="nv">@testall</span><span class="w"></span>
</code></pre></div>
<p>NOTES</p>
<div class="codehilite"><pre><span></span><code><span class="n">The</span><span class="w"> </span><span class="n">intel</span><span class="w"> </span><span class="k">Fortran</span><span class="w"> </span><span class="n">compiler</span><span class="w"> </span><span class="n">now</span><span class="w"> </span><span class="n">calls</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">response</span><span class="w"> </span><span class="n">files</span><span class="w"> </span><span class="ss">"indirect</span>
<span class="ss">files"</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">does</span><span class="w"> </span><span class="ow">not</span><span class="w"> </span><span class="k">add</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">implied</span><span class="w"> </span><span class="n">suffix</span><span class="w"> </span><span class="ss">".rsp"</span><span class="w"> </span><span class="k">to</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">files</span><span class="w"></span>
<span class="n">anymore</span><span class="p">.</span><span class="w"> </span><span class="n">It</span><span class="w"> </span><span class="n">also</span><span class="w"> </span><span class="n">allows</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="nv">@NAME</span><span class="w"> </span><span class="n">syntax</span><span class="w"> </span><span class="n">anywhere</span><span class="w"> </span><span class="k">on</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">command</span><span class="w"> </span><span class="n">line</span><span class="p">,</span><span class="w"></span>
<span class="ow">not</span><span class="w"> </span><span class="n">just</span><span class="w"> </span><span class="k">at</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">beginning</span><span class="p">.</span><span class="w"> </span><span class="c1">-- 20201212</span>
</code></pre></div>
<h2 id="author">AUTHOR</h2>
<div class="codehilite"><pre><span></span><code> John S. Urban, 2019
</code></pre></div>
<h2 id="license">LICENSE</h2>
<div class="codehilite"><pre><span></span><code> Public Domain
</code></pre></div>
<h3>Arguments</h3>
<table class="table table-striped varlist">
<thead>
<tr>
<th>Type</th>
<th>Intent</th><th>Optional</th> <th>Attributes</th>
<th></th>
<th>Name</th>
<th></th>
</thead>
<tbody>
<tr>
<td>
<span class="anchor" id="variable-prototype"></span>
character(len=*),
</td>
<td>intent(in)</td>
<td></td> <td>
</td>
<td>::</td>
<td><strong>prototype</strong></td>
<td>
</td>
</tr>
<tr>
<td>
<span class="anchor" id="variable-help_text~2"></span>
character(len=*),
</td>
<td>intent(in),</td>
<td>optional</td> <td>
</td>
<td>::</td>
<td><strong>help_text</strong>(:)</td>
<td>
</td>
</tr>
<tr>
<td>
<span class="anchor" id="variable-version_text~2"></span>
character(len=*),
</td>
<td>intent(in),</td>
<td>optional</td> <td>
</td>
<td>::</td>
<td><strong>version_text</strong>(:)</td>
<td>
</td>
</tr>
<tr>
<td>
<span class="anchor" id="variable-string"></span>
character(len=*),
</td>
<td>intent(in),</td>
<td>optional</td> <td>
</td>
<td>::</td>
<td><strong>string</strong></td>
<td>
</td>
</tr>
<tr>
<td>
<span class="anchor" id="variable-prefix"></span>
character(len=*),
</td>
<td>intent(in),</td>
<td>optional</td> <td>
</td>
<td>::</td>
<td><strong>prefix</strong></td>
<td>
</td>
</tr>
<tr>
<td>
<span class="anchor" id="variable-ierr"></span>
integer,
</td>
<td>intent(out),</td>
<td>optional</td> <td>
</td>
<td>::</td>
<td><strong>ierr</strong></td>
<td>
</td>
</tr>
<tr>
<td>
<span class="anchor" id="variable-errmsg"></span>
character(len=:),
</td>
<td>intent(out),</td>
<td>optional,</td> <td>
allocatable
</td>
<td>::</td>
<td><strong>errmsg</strong></td>
<td>
</td>
</tr>
</tbody>
</table>
<br>
<section class="visible-xs visible-sm hidden-md">
<h3>Contents</h3>
<div class="panel panel-primary">
<div class="panel-heading text-left"><h3 class="panel-title">Source Code</h3></div>
<div class="list-group">
<a class="list-group-item" href="../proc/set_args.html#src">set_args</a>
</div>
</div>
</section>
<br class="visible-xs visible-sm hidden-md">
<section>
<h2><span class="anchor" id="src"></span>Source Code</h2>
<div class="highlight"><pre><span></span><span class="k">subroutine </span><span class="n">set_args</span><span class="p">(</span><span class="n">prototype</span><span class="p">,</span><span class="n">help_text</span><span class="p">,</span><span class="n">version_text</span><span class="p">,</span><span class="n">string</span><span class="p">,</span><span class="n">prefix</span><span class="p">,</span><span class="n">ierr</span><span class="p">,</span><span class="n">errmsg</span><span class="p">)</span><span class="w"></span>
<span class="c">! ident_1="@(#) M_CLI2 set_args(3f) parse prototype string"</span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=*</span><span class="p">),</span><span class="k">intent</span><span class="p">(</span><span class="n">in</span><span class="p">)</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">prototype</span><span class="w"></span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=*</span><span class="p">),</span><span class="k">intent</span><span class="p">(</span><span class="n">in</span><span class="p">),</span><span class="k">optional</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">help_text</span><span class="p">(:)</span><span class="w"></span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=*</span><span class="p">),</span><span class="k">intent</span><span class="p">(</span><span class="n">in</span><span class="p">),</span><span class="k">optional</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">version_text</span><span class="p">(:)</span><span class="w"></span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=*</span><span class="p">),</span><span class="k">intent</span><span class="p">(</span><span class="n">in</span><span class="p">),</span><span class="k">optional</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">string</span><span class="w"></span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=*</span><span class="p">),</span><span class="k">intent</span><span class="p">(</span><span class="n">in</span><span class="p">),</span><span class="k">optional</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">prefix</span><span class="w"></span>
<span class="kt">integer</span><span class="p">,</span><span class="k">intent</span><span class="p">(</span><span class="n">out</span><span class="p">),</span><span class="k">optional</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">ierr</span><span class="w"></span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=</span><span class="p">:),</span><span class="k">intent</span><span class="p">(</span><span class="n">out</span><span class="p">),</span><span class="k">allocatable</span><span class="p">,</span><span class="k">optional</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">errmsg</span><span class="w"></span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=</span><span class="p">:),</span><span class="k">allocatable</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">hold</span><span class="w"> </span><span class="c">! stores command line argument</span>
<span class="kt">integer</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">ibig</span><span class="w"></span>
<span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=</span><span class="p">:),</span><span class="k">allocatable</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">debug_mode</span><span class="w"></span>
<span class="w"> </span><span class="n">debug_mode</span><span class="o">=</span><span class="w"> </span><span class="n">upper</span><span class="p">(</span><span class="n">get_env</span><span class="p">(</span><span class="s1">'CLI_DEBUG_MODE'</span><span class="p">,</span><span class="s1">'FALSE'</span><span class="p">))</span><span class="o">//</span><span class="s1">' '</span><span class="w"></span>
<span class="w"> </span><span class="k">select case</span><span class="p">(</span><span class="n">debug_mode</span><span class="p">(</span><span class="mi">1</span><span class="p">:</span><span class="mi">1</span><span class="p">))</span><span class="w"></span>
<span class="w"> </span><span class="k">case</span><span class="p">(</span><span class="s1">'Y'</span><span class="p">,</span><span class="s1">'T'</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">G_DEBUG</span><span class="o">=</span><span class="p">.</span><span class="n">true</span><span class="p">.</span><span class="w"></span>
<span class="w"> </span><span class="k">end select</span>
<span class="k"> </span><span class="n">G_response</span><span class="o">=</span><span class="n">CLI_RESPONSE_FILE</span><span class="w"></span>
<span class="w"> </span><span class="n">G_options_only</span><span class="o">=</span><span class="p">.</span><span class="n">false</span><span class="p">.</span><span class="w"></span>
<span class="w"> </span><span class="n">G_passed_in</span><span class="o">=</span><span class="s1">''</span><span class="w"></span>
<span class="w"> </span><span class="n">G_STOP</span><span class="o">=</span><span class="mi">0</span><span class="w"></span>
<span class="w"> </span><span class="n">G_STOP_MESSAGE</span><span class="o">=</span><span class="s1">''</span><span class="w"></span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="nb">present</span><span class="p">(</span><span class="n">prefix</span><span class="p">))</span><span class="k">then</span>
<span class="k"> </span><span class="n">G_PREFIX</span><span class="o">=</span><span class="n">prefix</span><span class="w"></span>
<span class="w"> </span><span class="k">else</span>
<span class="k"> </span><span class="n">G_PREFIX</span><span class="o">=</span><span class="s1">''</span><span class="w"></span>
<span class="w"> </span><span class="k">endif</span>
<span class="k"> if</span><span class="p">(</span><span class="nb">present</span><span class="p">(</span><span class="n">ierr</span><span class="p">))</span><span class="k">then</span>
<span class="k"> </span><span class="n">G_QUIET</span><span class="o">=</span><span class="p">.</span><span class="n">true</span><span class="p">.</span><span class="w"></span>
<span class="w"> </span><span class="k">else</span>
<span class="k"> </span><span class="n">G_QUIET</span><span class="o">=</span><span class="p">.</span><span class="n">false</span><span class="p">.</span><span class="w"></span>
<span class="w"> </span><span class="k">endif</span>
<span class="k"> </span><span class="n">ibig</span><span class="o">=</span><span class="n">longest_command_argument</span><span class="p">()</span><span class="w"> </span><span class="c">! bug in gfortran. len=0 should be fine</span>
<span class="w"> </span><span class="k">IF</span><span class="p">(</span><span class="nb">ALLOCATED</span><span class="p">(</span><span class="n">UNNAMED</span><span class="p">))</span><span class="w"> </span><span class="k">DEALLOCATE</span><span class="p">(</span><span class="n">UNNAMED</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="k">ALLOCATE</span><span class="p">(</span><span class="kt">CHARACTER</span><span class="p">(</span><span class="nb">LEN</span><span class="o">=</span><span class="n">IBIG</span><span class="p">)</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">UNNAMED</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span><span class="w"></span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="nb">allocated</span><span class="p">(</span><span class="n">args</span><span class="p">))</span><span class="w"> </span><span class="k">deallocate</span><span class="p">(</span><span class="n">args</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="k">allocate</span><span class="p">(</span><span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=</span><span class="n">ibig</span><span class="p">)</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">args</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span><span class="w"></span>
<span class="w"> </span><span class="k">call </span><span class="n">wipe_dictionary</span><span class="p">()</span><span class="w"></span>
<span class="w"> </span><span class="n">hold</span><span class="o">=</span><span class="s1">'--version F --usage F --help F --version F '</span><span class="o">//</span><span class="nb">adjustl</span><span class="p">(</span><span class="n">prototype</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="k">call </span><span class="n">prototype_and_cmd_args_to_nlist</span><span class="p">(</span><span class="n">hold</span><span class="p">,</span><span class="n">string</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="nb">allocated</span><span class="p">(</span><span class="n">G_RESPONSE_IGNORED</span><span class="p">))</span><span class="k">then</span>
<span class="k"> if</span><span class="p">(</span><span class="n">G_DEBUG</span><span class="p">)</span><span class="k">write</span><span class="p">(</span><span class="o">*</span><span class="p">,</span><span class="n">gen</span><span class="p">)</span><span class="s1">'<DEBUG>SET_ARGS:G_RESPONSE_IGNORED:'</span><span class="p">,</span><span class="n">G_RESPONSE_IGNORED</span><span class="w"></span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">size</span><span class="p">(</span><span class="n">unnamed</span><span class="p">)</span><span class="w"> </span><span class="o">/=</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="k">write</span><span class="p">(</span><span class="o">*</span><span class="p">,</span><span class="o">*</span><span class="p">)</span><span class="s1">'LOGIC ERROR'</span><span class="w"></span>
<span class="w"> </span><span class="k">call </span><span class="n">split</span><span class="p">(</span><span class="n">G_RESPONSE_IGNORED</span><span class="p">,</span><span class="n">unnamed</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="k">endif</span>
<span class="k"> if</span><span class="p">(.</span><span class="nb">not</span><span class="p">.</span><span class="nb">allocated</span><span class="p">(</span><span class="n">unnamed</span><span class="p">))</span><span class="k">then</span>
<span class="k"> allocate</span><span class="p">(</span><span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">unnamed</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span><span class="w"></span>
<span class="w"> </span><span class="k">endif</span>
<span class="k"> if</span><span class="p">(.</span><span class="nb">not</span><span class="p">.</span><span class="nb">allocated</span><span class="p">(</span><span class="n">args</span><span class="p">))</span><span class="k">then</span>
<span class="k"> allocate</span><span class="p">(</span><span class="kt">character</span><span class="p">(</span><span class="nb">len</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">args</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span><span class="w"></span>
<span class="w"> </span><span class="k">endif</span>
<span class="k"> call </span><span class="n">check_commandline</span><span class="p">(</span><span class="n">help_text</span><span class="p">,</span><span class="n">version_text</span><span class="p">)</span><span class="w"> </span><span class="c">! process --help, --version, --usage</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="nb">present</span><span class="p">(</span><span class="n">ierr</span><span class="p">))</span><span class="k">then</span>
<span class="k"> </span><span class="n">ierr</span><span class="o">=</span><span class="n">G_STOP</span><span class="w"></span>
<span class="w"> </span><span class="k">endif</span>
<span class="k"> if</span><span class="p">(</span><span class="nb">present</span><span class="p">(</span><span class="n">errmsg</span><span class="p">))</span><span class="k">then</span>
<span class="k"> </span><span class="n">errmsg</span><span class="o">=</span><span class="n">G_STOP_MESSAGE</span><span class="w"></span>
<span class="w"> </span><span class="k">endif</span>
<span class="k">end subroutine </span><span class="n">set_args</span><span class="w"></span>
</pre></div>
</section>
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<div class="col-xs-6 col-md-6"><p>M_CLI2 was developed by John S. Urban<br>© 2023
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Documentation generated by
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