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<h1 class="headline">Template::Plugin::Directory</h1>
<h2 class="subhead">Plugin for generating directory listings</h1>
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<li class=""><a href="#SYNOPSIS">SYNOPSIS</a></li>
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<pre>[% USE dir = Directory(dirpath) %]
# files returns list of regular files
[% FOREACH file = dir.files %]
[% file.name %] [% file.path %] ...
[% END %]
# dirs returns list of sub-directories
[% FOREACH subdir = dir.dirs %]
[% subdir.name %] [% subdir.path %] ...
[% END %]
# list returns both interleaved in order
[% FOREACH item = dir.list %]
[% IF item.isdir %]
Directory: [% item.name %]
[% ELSE
File: [% item.name %]
[% END %]
[% END %]
# define a VIEW to display dirs/files
[% VIEW myview %]
[% BLOCK file %]
File: [% item.name %]
[% END %]
[% BLOCK directory %]
Directory: [% item.name %]
[% item.content(myview) | indent -%]
[% END %]
[% END %]
# display directory content using view
[% myview.print(dir) %]</pre>
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<p>
This Template Toolkit plugin provides a simple interface to directory
listings. It is derived from the <a href="../../../modules/Template/Plugin/File.html">Template::Plugin::File</a>
module and uses <a href="../../../modules/Template/Plugin/File.html">Template::Plugin::File</a> object instances to represent files
within a directory. Sub-directories within a directory are represented by
further <code>Template::Plugin::Directory</code> instances.
</p>
<p>
The constructor expects a directory name as an argument.
</p>
<pre>[% USE dir = Directory('/tmp') %]</pre>
<p>
It then provides access to the files and sub-directories contained within
the directory.
</p>
<pre># regular files (not directories)
[% FOREACH file IN dir.files %]
[% file.name %]
[% END %]</pre>
<pre># directories only
[% FOREACH file IN dir.dirs %]
[% file.name %]
[% END %]</pre>
<pre># files and/or directories
[% FOREACH file IN dir.list %]
[% file.name %] ([% file.isdir ? 'directory' : 'file' %])
[% END %]</pre>
<p>
The plugin constructor will throw a <code>Directory</code> error if the
specified path does not exist, is not a directory or fails to
<code>stat()</code> (see <a href="../../../modules/Template/Plugin/File.html">Template::Plugin::File</a>). Otherwise, it will scan the directory
and create lists named '<code>files</code>' containing files,
'<code>dirs</code>' containing directories and '<code>list</code>'
containing both files and directories combined. The <code>nostat</code>
option can be set to disable all file/directory checks and directory
scanning.
</p>
<p>
Each file in the directory will be represented by a <a href="../../../modules/Template/Plugin/File.html">Template::Plugin::File</a>
object instance, and each directory by another
<code>Template::Plugin::Directory</code>. If the <code>recurse</code>
flag is set, then those directories will contain further nested entries,
and so on. With the <code>recurse</code> flag unset, as it is by default,
then each is just a place marker for the directory and does not contain
any further content unless its <code>scan()</code> method is explicitly
called. The <code>isdir</code> flag can be tested against files and/or
directories, returning true if the item is a directory or false if it is
a regular file.
</p>
<pre>[% FOREACH file = dir.list %]
[% IF file.isdir %]
* Directory: [% file.name %]
[% ELSE %]
* File: [% file.name %]
[% END %]
[% END %]</pre>
<p>
This example shows how you might walk down a directory tree, displaying
content as you go. With the recurse flag disabled, as is the default, we
need to explicitly call the <code>scan()</code> method on each directory,
to force it to lookup files and further sub-directories contained within.
</p>
<pre>[% USE dir = Directory(dirpath) %]
* [% dir.path %]
[% INCLUDE showdir %]
[% BLOCK showdir -%]
[% FOREACH file = dir.list -%]
[% IF file.isdir -%]
* [% file.name %]
[% file.scan -%]
[% INCLUDE showdir dir=file FILTER indent(4) -%]
[% ELSE -%]
- [% f.name %]
[% END -%]
[% END -%]
[% END %]</pre>
<p>
This example is adapted (with some re-formatting for clarity) from a test
in <i>t/directry.t</i> which produces the following output:
</p>
<pre>* test/dir
- file1
- file2
* sub_one
- bar
- foo
* sub_two
- waz.html
- wiz.html
- xyzfile</pre>
<p>
The <code>recurse</code> flag can be set (disabled by default) to cause
the constructor to automatically recurse down into all sub-directories,
creating a new <code>Template::Plugin::Directory</code> object for each
one and filling it with any further content. In this case there is no
need to explicitly call the <code>scan()</code> method.
</p>
<pre>[% USE dir = Directory(dirpath, recurse=1) %]
...
[% IF file.isdir -%]
* [% file.name %]
[% INCLUDE showdir dir=file FILTER indent(4) -%]
[% ELSE -%]
...</pre>
<p>
The directory plugin also provides support for views. A view can be
defined as a <code>VIEW ... END</code> block and should contain
<code>BLOCK</code> definitions for files ('<code>file</code>') and
directories ('<code>directory</code>').
</p>
<pre>[% VIEW myview %]
[% BLOCK file %]
- [% item.name %]
[% END %]
[% BLOCK directory %]
* [% item.name %]
[% item.content(myview) FILTER indent %]
[% END %]
[% END %]</pre>
<p>
The view <code>print()</code> method can then be called, passing the
<code>Directory</code> object as an argument.
</p>
<pre>[% USE dir = Directory(dirpath, recurse=1) %]
[% myview.print(dir) %]</pre>
<p>
When a directory is presented to a view, either as <code>[%
myview.print(dir) %]</code> or <code>[% dir.present(view) %]</code>, then
the <code>directory</code> <code>BLOCK</code> within the
<code>myview</code> <code>VIEW</code> is processed. The <code>item</code>
variable will be set to alias the <code>Directory</code> object.
</p>
<pre>[% BLOCK directory %]
* [% item.name %]
[% item.content(myview) FILTER indent %]
[% END %]</pre>
<p>
In this example, the directory name is first printed and the
content(view) method is then called to present each item within the
directory to the view. Further directories will be mapped to the
<code>directory</code> block, and files will be mapped to the
<code>file</code> block.
</p>
<p>
With the recurse option disabled, as it is by default, the
<code>directory</code> block should explicitly call a <code>scan()</code>
on each directory.
</p>
<pre>[% VIEW myview %]
[% BLOCK file %]
- [% item.name %]
[% END %]
[% BLOCK directory %]
* [% item.name %]
[% item.scan %]
[% item.content(myview) FILTER indent %]
[% END %]
[% END %]
[% USE dir = Directory(dirpath) %]
[% myview.print(dir) %]</pre>
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<p>
Michael Stevens wrote the original Directory plugin on which this is
based. Andy Wardley split it into separate <a href="../../../modules/Template/Plugin/File.html">File</a> and <a href="../../../modules/Template/Plugin/Directory.html">Directory</a> plugins,
added some extra code and documentation for <code>VIEW</code> support,
and made a few other minor tweaks.
</p>
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<p>
Copyright (C) 2000-2007 Michael Stevens, Andy Wardley.
</p>
<p>
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
</p>
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<p>
<a href="../../../modules/Template/Plugin.html">Template::Plugin</a>, <a
href="../../../modules/Template/Plugin/File.html">Template::Plugin::File</a>, <a href="../../../modules/Template/View.html">Template::View</a>
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/modules/Template/Plugin/Directory.html last modified 10:54:58 31-May-2007
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