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<h1 id="lua-function-calls"><a class="header" href="#lua-function-calls">Lua Function Calls</a></h1>
<p>xplr allows you to define lua functions using the <code>xplr.fn.custom</code> Lua API.</p>
<p>These functions can be called using messages like <code>CallLua</code>, <code>CallLuaSilently</code>.</p>
<p>When called the function receives a <a href="#lua-context">special argument</a> that
contains some useful information. The function can optionally return a list of
messages which will be handled by xplr.</p>
<h3 id="lua-context"><a class="header" href="#lua-context">Lua Context</a></h3>
<p>This is a special argument passed to the lua functions when called using the
<code>CallLua</code>, <code>CallLuaSilently</code> messages.</p>
<p>It contains the following information:</p>
<ul>
<li><a href="#version">version</a></li>
<li><a href="#pwd">pwd</a></li>
<li><a href="#focused_node">focused_node</a></li>
<li><a href="#directory_buffer">directory_buffer</a></li>
<li><a href="#selection">selection</a></li>
<li><a href="#mode">mode</a></li>
<li><a href="#layout">layout</a></li>
<li><a href="#input_buffer">input_buffer</a></li>
<li><a href="#pid">pid</a></li>
<li><a href="#session_path">session_path</a></li>
<li><a href="#explorer_config">explorer_config</a></li>
<li><a href="#history">history</a></li>
<li><a href="#last_modes">last_modes</a></li>
</ul>
<h3 id="version"><a class="header" href="#version">version</a></h3>
<p>Type: string</p>
<p>xplr version. Can be used to test compatibility.</p>
<h3 id="pwd"><a class="header" href="#pwd">pwd</a></h3>
<p>Type: string</p>
<p>The present working directory/</p>
<h3 id="focused_node"><a class="header" href="#focused_node">focused_node</a></h3>
<p>Type: nullable <a href="#node">Node</a></p>
<p>The node under focus.</p>
<h3 id="directory_buffer"><a class="header" href="#directory_buffer">directory_buffer</a></h3>
<p>Type: nullable <a href="#directory-buffer">Directory Buffer</a></p>
<p>The directory buffer being rendered.</p>
<h3 id="selection"><a class="header" href="#selection">selection</a></h3>
<p>Type: list of selected <a href="#node">Node</a>s</p>
<p>The selected nodes.</p>
<h3 id="mode"><a class="header" href="#mode">mode</a></h3>
<p>Type: <a href="modes.html#mode">Mode</a></p>
<p>Current mode.</p>
<h3 id="layout"><a class="header" href="#layout">layout</a></h3>
<p>Type: <a href="layouts.html">Layout</a></p>
<p>Current layout.</p>
<h3 id="input_buffer"><a class="header" href="#input_buffer">input_buffer</a></h3>
<p>Type: nullable string</p>
<p>The input buffer.</p>
<h3 id="pid"><a class="header" href="#pid">pid</a></h3>
<p>Type: integer</p>
<p>The xplr session PID.</p>
<h3 id="session_path"><a class="header" href="#session_path">session_path</a></h3>
<p>Type: string</p>
<p>The session path.</p>
<h3 id="explorer_config"><a class="header" href="#explorer_config">explorer_config</a></h3>
<p><a href="https://docs.rs/xplr/latest/xplr/app/struct.ExplorerConfig.html">TODO</a></p>
<h3 id="history"><a class="header" href="#history">history</a></h3>
<p>Type: <a href="#history-1">History</a></p>
<h3 id="last_modes"><a class="header" href="#last_modes">last_modes</a></h3>
<p>Type: list of <a href="modes.html#mode">Mode</a></p>
<p>Last modes, not popped yet.</p>
<h3 id="parent"><a class="header" href="#parent">parent</a></h3>
<p>Type: string</p>
<p>The parent path of the node.</p>
<h3 id="relative_path"><a class="header" href="#relative_path">relative_path</a></h3>
<p>Type: string</p>
<p>The path relative to the parent, i.e. the file/directory name with extension.</p>
<h3 id="absolute_path"><a class="header" href="#absolute_path">absolute_path</a></h3>
<p>Type: string</p>
<p>The absolute path (without resolving symlinks) of the node.</p>
<h3 id="extension"><a class="header" href="#extension">extension</a></h3>
<p>Type: string</p>
<p>The extension of the node.</p>
<h3 id="is_symlink"><a class="header" href="#is_symlink">is_symlink</a></h3>
<p>Type: boolean</p>
<p><code>true</code> if the node is a symlink.</p>
<h3 id="is_broken"><a class="header" href="#is_broken">is_broken</a></h3>
<p>Type: boolean</p>
<p><code>true</code> if the node is a broken symlink.</p>
<h3 id="is_dir"><a class="header" href="#is_dir">is_dir</a></h3>
<p>Type: boolean</p>
<p><code>true</code> if the node is a directory.</p>
<h3 id="is_file"><a class="header" href="#is_file">is_file</a></h3>
<p>Type: boolean</p>
<p><code>true</code> if the node is a file.</p>
<h3 id="is_readonly"><a class="header" href="#is_readonly">is_readonly</a></h3>
<p>Type: boolean</p>
<p><code>true</code> if the node is real-only.</p>
<h3 id="mime_essence"><a class="header" href="#mime_essence">mime_essence</a></h3>
<p>Type: string</p>
<p>The mime type of the node. For e.g. <code>text/csv</code>, <code>image/jpeg</code> etc.</p>
<h3 id="size"><a class="header" href="#size">size</a></h3>
<p>Type: integer</p>
<p>The size of the exact node. The size of a directory won't be calculated
recursively.</p>
<h3 id="human_size"><a class="header" href="#human_size">human_size</a></h3>
<p>Type: string</p>
<p>Like size but in human readable format.</p>
<h3 id="permissions"><a class="header" href="#permissions">permissions</a></h3>
<p>Type: <a href="column-renderer.html#permission">Permission</a></p>
<p>The <a href="column-renderer.html#permission">permissions</a> applied to the node.</p>
<h3 id="canonical"><a class="header" href="#canonical">canonical</a></h3>
<p>Type: nullable <a href="column-renderer.html#resolved-node-metadata">Resolved Node Metadata</a></p>
<p>If the node is a symlink, it will hold information about the symlink resolved
node. Else, it will hold information the actual node. It the symlink is broken,
it will be null.</p>
<h3 id="symlink"><a class="header" href="#symlink">symlink</a></h3>
<p>Type: nullable <a href="column-renderer.html#resolved-node-metadata">Resolved Node Metadata</a></p>
<p>If the node is a symlink and is not broken, it will hold information about the
symlink resolved node. However, it will never hold information about the actual
node. It will instead be null.</p>
<h3 id="node"><a class="header" href="#node">Node</a></h3>
<p>A node contains the following fields:</p>
<ul>
<li><a href="#parent">parent</a></li>
<li><a href="#relative_path">relative_path</a></li>
<li><a href="#absolute_path">absolute_path</a></li>
<li><a href="#extension">extension</a></li>
<li><a href="#is_symlink">is_symlink</a></li>
<li><a href="#is_broken">is_broken</a></li>
<li><a href="#is_dir">is_dir</a></li>
<li><a href="#is_file">is_file</a></li>
<li><a href="#is_readonly">is_readonly</a></li>
<li><a href="#mime_essence">mime_essence</a></li>
<li><a href="#size">size</a></li>
<li><a href="#human_size">human_size</a></li>
<li><a href="#permissions">permissions</a></li>
<li><a href="#canonical">canonical</a></li>
<li><a href="#symlink">symlink</a></li>
</ul>
<h3 id="directory-buffer"><a class="header" href="#directory-buffer">Directory Buffer</a></h3>
<p>Directory buffer contains the following fields:</p>
<ul>
<li><a href="#parent">parent</a></li>
<li><a href="#nodes">nodes</a></li>
<li><a href="#total">total</a></li>
<li><a href="#focus">focus</a></li>
</ul>
<h4 id="parent-1"><a class="header" href="#parent-1">parent</a></h4>
<p>Type: string</p>
<p>The parent path of the node.</p>
<h4 id="nodes"><a class="header" href="#nodes">nodes</a></h4>
<p>Type: list of <a href="#node">Node</a>s</p>
<p>A list of visible nodes.</p>
<h4 id="total"><a class="header" href="#total">total</a></h4>
<p>Type: int</p>
<p>The count of nodes being rendered.</p>
<h4 id="focus"><a class="header" href="#focus">focus</a></h4>
<p>Type: int</p>
<p>The index of the node under focus. It can be <code>0</code> even when there's no node to
focus on.</p>
<h3 id="history-1"><a class="header" href="#history-1">History</a></h3>
<p>History contains the following fields:</p>
<ul>
<li><a href="#loc">loc</a></li>
<li><a href="#paths">paths</a></li>
</ul>
<h4 id="loc"><a class="header" href="#loc">loc</a></h4>
<p>Type: int</p>
<p>Location of the current path in history.</p>
<h4 id="paths"><a class="header" href="#paths">paths</a></h4>
<p>Type: list of string</p>
<p>Visited paths.</p>
<h3 id="example-using-lua-function-calls"><a class="header" href="#example-using-lua-function-calls">Example: Using Lua Function Calls</a></h3>
<pre><code class="language-lua">-- Define the function
xplr.fn.custom.ask_name_and_greet = function(app)
print(&quot;What's your name?&quot;)
local name = io.read()
local greeting = &quot;Hello &quot; .. name .. &quot;!&quot;
local message = greeting .. &quot; You are inside &quot; .. app.pwd
return {
{ LogSuccess = message },
}
end
-- Map the function to a key (space)
xplr.config.modes.builtin.default.key_bindings.on_key.space = {
help = &quot;ask name and greet&quot;,
messages = {
{ CallLua = &quot;custom.ask_name_and_greet&quot; }
}
}
-- Now, when you press &quot;space&quot; in default mode, you will be prompted for your
-- name. Enter your name to receive a nice greeting and to know your location.
</code></pre>
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