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<!doctype html><html><head><title>Module commander — Hilbish</title><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"><meta name=theme-color content="#ff89dd"><meta content="/Hilbish/hilbish-flower.png" property="og:image"><meta property="og:site_name" content="Hilbish"><meta content="Module commander — Hilbish" property="og:title"><meta content="library for custom commands" property="og:description"><meta content="library for custom commands" name=description><meta name=revisit-after content="2 days"><meta name=keywords content="Lua,Hilbish,Linux,Shell"><meta property="og:locale" content="en_GB"><link rel=canonical href=https://rosettea.github.io/Hilbish/><meta property="og:url" content="https://rosettea.github.io/Hilbish/"><link href=https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/css/bootstrap.min.css rel=stylesheet integrity=sha384-0evHe/X+R7YkIZDRvuzKMRqM+OrBnVFBL6DOitfPri4tjfHxaWutUpFmBp4vmVor crossorigin=anonymous><script src=https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/js/bootstrap.bundle.min.js integrity=sha384-pprn3073KE6tl6bjs2QrFaJGz5/SUsLqktiwsUTF55Jfv3qYSDhgCecCxMW52nD2 crossorigin=anonymous></script>
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<span class=navbar-toggler-icon></span></button><div class="collapse navbar-collapse" id=navbarSupportedContent><ul class="navbar-nav me-auto mb-2 mb-lg-0"><li class=nav-item><a href=/Hilbish/versions/v2.3.1/ class=nav-link>Home</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/install/ class=nav-link>Install</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/ class=nav-link>Docs</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/blog/ class=nav-link>Blog</a></li></ul></div></div></nav></header><style>@media(min-width:768px){.sidenav{width:240px}}</style><div class=row><nav class="navbar-expand-md bg-light sidenav border-end"><div class=container><div class="collapse navbar-collapse" id=navbarSupportedContent><nav class="navbar navbar-expand-md bg-light sidenav col" style=margin-top:-20px><ul class="navbar-nav me-auto mb-2 mb-lg-0 flex-column col mt-4"><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/ class=nav-link><strong>Introduction</strong></a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/getting-started/ class=nav-link><strong>Getting Started</strong></a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/faq/ class=nav-link><strong>Frequently Asked Questions</strong></a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/features/ class=nav-link><strong>Features</strong></a></li><ul style=list-style:none><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/completions/ class=nav-link>Completions</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/features/notifications/ class=nav-link>Notification</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/features/opts/ class=nav-link>Options</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/features/runner-mode/ class=nav-link>Runner Mode</a></li></ul><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/hooks/ class=nav-link><strong>Signals</strong></a></li><ul style=list-style:none><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/hooks/command/ class=nav-link>Command</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/hooks/hilbish/ class=nav-link>Hilbish</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/hooks/signal/ class=nav-link>Signal</a></li></ul><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/lunacolors/ class=nav-link><strong>Lunacolors</strong></a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/vim-mode/ class=nav-link><strong>Vim Mode</strong></a></li><ul style=list-style:none><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/vim-mode/actions/ class=nav-link>Actions</a></li></ul><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/nature/ class=nav-link><strong>Nature</strong></a></li><ul style=list-style:none><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/nature/dirs/ class=nav-link>Module dirs</a></li></ul><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/ class=nav-link><strong>API</strong></a></li><ul style=list-style:none><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/bait/ class=nav-link>Module bait</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/commander/ class=nav-link>Module commander</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/fs/ class=nav-link>Module fs</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/hilbish/ class=nav-link>Module hilbish</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/hilbish/hilbish.aliases/ class=nav-link>Module hilbish.aliases</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/hilbish/hilbish.completion/ class=nav-link>Module hilbish.completion</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/hilbish/hilbish.editor/ class=nav-link>Module hilbish.editor</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/hilbish/hilbish.history/ class=nav-link>Module hilbish.history</a></li><li class=nav-item><a href=/Hilbish/versions/v2.3.1/docs/api/hilbish/hilbish.jobs/ cla
<a href=#introduction class=heading-link><i class="fas fa-paperclip"></i></a></h3><p>Commander is the library which handles Hilbish commands. This makes
the user able to add Lua-written commands to their shell without making
a separate script in a bin folder. Instead, you may simply use the Commander
library in your Hilbish config.</p><div class=highlight><pre tabindex=0 class=chroma><code class=language-lua data-lang=lua><span class=line><span class=ln>1</span><span class=cl><span class=kd>local</span> <span class=n>commander</span> <span class=o>=</span> <span class=n>require</span> <span class=s1>&#39;commander&#39;</span>
</span></span><span class=line><span class=ln>2</span><span class=cl>
</span></span><span class=line><span class=ln>3</span><span class=cl><span class=n>commander.register</span><span class=p>(</span><span class=s1>&#39;hello&#39;</span><span class=p>,</span> <span class=kr>function</span><span class=p>(</span><span class=n>args</span><span class=p>,</span> <span class=n>sinks</span><span class=p>)</span>
</span></span><span class=line><span class=ln>4</span><span class=cl> <span class=n>sinks.out</span><span class=p>:</span><span class=n>writeln</span> <span class=s1>&#39;Hello world!&#39;</span>
</span></span><span class=line><span class=ln>5</span><span class=cl><span class=kr>end</span><span class=p>)</span>
</span></span></code></pre></div><p>In this example, a command with the name of <code>hello</code> is created
that will print <code>Hello world!</code> to output. One question you may
have is: What is the <code>sinks</code> parameter?</p><p>The <code>sinks</code> parameter is a table with 3 keys: <code>input</code>, <code>out</code>, and <code>err</code>.
There is an <code>in</code> alias to <code>input</code>, but it requires using the string accessor syntax (<code>sinks['in']</code>)
as <code>in</code> is also a Lua keyword, so <code>input</code> is preferred for use.
All of them are a <a href=/Hilbish/docs/api/hilbish/#sink style=text-decoration:none>Sink</a>.
In the future, <code>sinks.in</code> will be removed.</p><ul><li><code>in</code> is the standard input.
You may use the read functions on this sink to get input from the user.</li><li><code>out</code> is standard output.
This is usually where command output should go.</li><li><code>err</code> is standard error.
This sink is for writing errors, as the name would suggest.</li></ul><h3 id=functions class=heading>Functions
<a href=#functions class=heading-link><i class="fas fa-paperclip"></i></a></h3><table><thead><tr><th></th><th></th></tr></thead><tbody><tr><td><a href=#deregister>deregister(name)</a></td><td>Removes the named command. Note that this will only remove Commander-registered commands.</td></tr><tr><td><a href=#register>register(name, cb)</a></td><td>Adds a new command with the given <code>name</code>. When Hilbish has to run a command with a name,</td></tr><tr><td><a href=#registry>registry() -> table</a></td><td>Returns all registered commanders. Returns a list of tables with the following keys:</td></tr></tbody></table><hr><div id=deregister><h4 class=heading>commander.deregister(name)
<a href=#deregister class=heading-link><i class="fas fa-paperclip"></i></a></h4><p>Removes the named command. Note that this will only remove Commander-registered commands.</p><h5 id=parameters class=heading>Parameters
<a href=#parameters class=heading-link><i class="fas fa-paperclip"></i></a></h5><p><code>string</code> <strong><code>name</code></strong><br>Name of the command to remove.</p></div><hr><div id=register><h4 class=heading>commander.register(name, cb)
<a href=#register class=heading-link><i class="fas fa-paperclip"></i></a></h4><p>Adds a new command with the given <code>name</code>. When Hilbish has to run a command with a name,<br>it will run the function providing the arguments and sinks.</p><h5 id=parameters-1 class=heading>Parameters
<a href=#parameters-1 class=heading-link><i class="fas fa-paperclip"></i></a></h5><p><code>string</code> <strong><code>name</code></strong><br>Name of the command</p><p><code>function</code> <strong><code>cb</code></strong><br>Callback to handle command invocation</p><h5 id=example class=heading>Example
<a href=#example class=heading-link><i class="fas fa-paperclip"></i></a></h5><div class=highlight><pre tabindex=0 class=chroma><code class=language-lua data-lang=lua><span class=line><span class=ln>1</span><span class=cl><span class=c1>-- When you run the command `hello` in the shell, it will print `Hello world`.</span>
</span></span><span class=line><span class=ln>2</span><span class=cl><span class=c1>-- If you run it with, for example, `hello Hilbish`, it will print &#39;Hello Hilbish&#39;</span>
</span></span><span class=line><span class=ln>3</span><span class=cl><span class=n>commander.register</span><span class=p>(</span><span class=s1>&#39;hello&#39;</span><span class=p>,</span> <span class=kr>function</span><span class=p>(</span><span class=n>args</span><span class=p>,</span> <span class=n>sinks</span><span class=p>)</span>
</span></span><span class=line><span class=ln>4</span><span class=cl> <span class=kd>local</span> <span class=n>name</span> <span class=o>=</span> <span class=s1>&#39;world&#39;</span>
</span></span><span class=line><span class=ln>5</span><span class=cl> <span class=kr>if</span> <span class=o>#</span><span class=n>args</span> <span class=o>&gt;</span> <span class=mi>0</span> <span class=kr>then</span> <span class=n>name</span> <span class=o>=</span> <span class=n>args</span><span class=p>[</span><span class=mi>1</span><span class=p>]</span> <span class=kr>end</span>
</span></span><span class=line><span class=ln>6</span><span class=cl>
</span></span><span class=line><span class=ln>7</span><span class=cl> <span class=n>sinks.out</span><span class=p>:</span><span class=n>writeln</span><span class=p>(</span><span class=s1>&#39;Hello &#39;</span> <span class=o>..</span> <span class=n>name</span><span class=p>)</span>
</span></span><span class=line><span class=ln>8</span><span class=cl><span class=kr>end</span><span class=p>)</span>
</span></span></code></pre></div></div><hr><div id=registry><h4 class=heading>commander.registry() -> table
<a href=#registry class=heading-link><i class="fas fa-paperclip"></i></a></h4><p>Returns all registered commanders. Returns a list of tables with the following keys:</p><ul><li><code>exec</code>: The function used to run the commander. Commanders require args and sinks to be passed.</li></ul><h5 id=parameters-2 class=heading>Parameters
<a href=#parameters-2 class=heading-link><i class="fas fa-paperclip"></i></a></h5><p>This function has no parameters.</p></div></div><div class="footer mt-auto"><p class="card-small text-muted">Want to help improve this page? <a href=https://github.com/Rosettea/Hilbish/issues/new/choose>Create an issue.</a></p></div></container></div><footer class="footer mt-auto mt-auto py-3 bg-light row border-top"><div class="col mb-3"></div><div class="col mb-3"><a href=/Hilbish class="d-flex align-items-center mb-3 link-dark text-decoration-none"><img src=/Hilbish/hilbish-logo-and-text.png alt height=48 class="d-inline-block align-text-top" style=margin-left:-20px></a><ul class="nav flex-column"><li class="nav-item mb-2"><a href=/Hilbish class="nav-link p-0 text-muted">Home</a></li><li class="nav-item mb-2"><a href=/Hilbish/docs/faq class="nav-link p-0 text-muted">FAQ</a></li><li class="nav-item mb-2"><a href=https://github.com/Rosettea/Hilbish class="nav-link p-0 text-muted">Source</a></li><li class="nav-item mb-2"><a href=https://github.com/Rosettea/Hilbish/releases class="nav-link p-0 text-muted">Releases</a></li><li class="nav-item mb-2"><a href=/Hilbish/docs class="nav-link p-0 text-muted">Documentation</a></li></ul></div><div class="col mb-3"></div><div class="col mb-3"></div><div class="col mb-3"></div><div class="col mb-3"><p class="text-muted mt-4">Rosettea &copy; 2022-2023<br>Made with <i class="fa-solid fa-heart" style=color:#f6345b></i></p></div><div class="col mb-3"></div></footer></body></html>