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<h1 class="headline">Template::Plugin::File</h1>
<h2 class="subhead">Plugin providing information about files</h1>
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<div class="body">
<ul class="toc">
<li class=""><a href="#SYNOPSIS">SYNOPSIS</a></li>
<li class=""><a href="#DESCRIPTION">DESCRIPTION</a></li>
<li class=""><a href="#METHODS">METHODS</a></li>
<li class="sub"><a href="#section_path">path</a></li>
<li class="sub"><a href="#section_name">name</a></li>
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<h1 id="SYNOPSIS" onclick="switch_section(this)" title="Click title to show/hide section content.">SYNOPSIS</h1>
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<div class="body">
<pre>[% USE File(filepath) %]
[% File.path %] # full path
[% File.name %] # filename
[% File.dir %] # directory</pre>
</div>
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<div class="section">
<div class="head">
<h1 id="DESCRIPTION" onclick="switch_section(this)" title="Click title to show/hide section content.">DESCRIPTION</h1>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
This plugin provides an abstraction of a file. It can be used to fetch
details about files from the file system, or to represent abstract files
(e.g. when creating an index page) that may or may not exist on a file
system.
</p>
<p>
A file name or path should be specified as a constructor argument. e.g.
</p>
<pre>[% USE File('foo.html') %]
[% USE File('foo/bar/baz.html') %]
[% USE File('/foo/bar/baz.html') %]</pre>
<p>
The file should exist on the current file system (unless
<code>nostat</code> option set, see below) as an absolute file when
specified with as leading '<code>/</code>' as per
'<code>/foo/bar/baz.html</code>', or otherwise as one relative to the
current working directory. The constructor performs a <code>stat()</code>
on the file and makes the 13 elements returned available as the plugin
items:
</p>
<pre>dev ino mode nlink uid gid rdev size
atime mtime ctime blksize blocks</pre>
<p>
e.g.
</p>
<pre>[% USE File('/foo/bar/baz.html') %]
[% File.mtime %]
[% File.mode %]
...</pre>
<p>
In addition, the <code>user</code> and <code>group</code> items are set
to contain the user and group names as returned by calls to
<code>getpwuid()</code> and <code>getgrgid()</code> for the file
<code>uid</code> and <code>gid</code> elements, respectively. On Win32
platforms on which <code>getpwuid()</code> and <code>getgrid()</code> are
not available, these values are undefined.
</p>
<pre>[% USE File('/tmp/foo.html') %]
[% File.uid %] # e.g. 500
[% File.user %] # e.g. abw</pre>
<p>
This user/group lookup can be disabled by setting the <code>noid</code>
option.
</p>
<pre>[% USE File('/tmp/foo.html', noid=1) %]
[% File.uid %] # e.g. 500
[% File.user %] # nothing</pre>
<p>
The <code>isdir</code> flag will be set if the file is a directory.
</p>
<pre>[% USE File('/tmp') %]
[% File.isdir %] # 1</pre>
<p>
If the <code>stat()</code> on the file fails (e.g. file doesn't exists,
bad permission, etc) then the constructor will throw a <code>File</code>
exception. This can be caught within a <code>TRY...CATCH</code> block.
</p>
<pre>[% TRY %]
[% USE File('/tmp/myfile') %]
File exists!
[% CATCH File %]
File error: [% error.info %]
[% END %]</pre>
<p>
Note the capitalisation of the exception type, '<code>File</code>', to
indicate an error thrown by the <code>File</code> plugin, to distinguish
it from a regular <code>file</code> exception thrown by the Template
Toolkit.
</p>
<p>
Note that the <code>File</code> plugin can also be referenced by the
lower case name '<code>file</code>'. However, exceptions are always
thrown of the <code>File</code> type, regardless of the capitalisation of
the plugin named used.
</p>
<pre>[% USE file('foo.html') %]
[% file.mtime %]</pre>
<p>
As with any other Template Toolkit plugin, an alternate name can be
specified for the object created.
</p>
<pre>[% USE foo = file('foo.html') %]
[% foo.mtime %]</pre>
<p>
The <code>nostat</code> option can be specified to prevent the plugin
constructor from performing a <code>stat()</code> on the file specified.
In this case, the file does not have to exist in the file system, no
attempt will be made to verify that it does, and no error will be thrown
if it doesn't. The entries for the items usually returned by
<code>stat()</code> will be set empty.
</p>
<pre>[% USE file('/some/where/over/the/rainbow.html', nostat=1)
[% file.mtime %] # nothing</pre>
</div>
</div>
<div class="section">
<div class="head">
<h1 id="METHODS" onclick="switch_section(this)" title="Click title to show/hide section content.">METHODS</h1>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
All <code>File</code> plugins, regardless of the <code>nostat</code>
option, have set a number of items relating to the original path
specified.
</p>
<div class="subsection">
<div class="head">
<h2 id="section_path" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">path</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The full, original file path specified to the constructor.
</p>
<pre>[% USE file('/foo/bar.html') %]
[% file.path %] # /foo/bar.html</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_name" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">name</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The name of the file without any leading directories.
</p>
<pre>[% USE file('/foo/bar.html') %]
[% file.name %] # bar.html</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_dir" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">dir</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The directory element of the path with the filename removed.
</p>
<pre>[% USE file('/foo/bar.html') %]
[% file.name %] # /foo</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_ext" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">ext</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The file extension, if any, appearing at the end of the path following a
'<code>.</code>' (not included in the extension).
</p>
<pre>[% USE file('/foo/bar.html') %]
[% file.ext %] # html</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_home" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">home</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
This contains a string of the form '<code>../..</code>' to represent the
upward path from a file to its root directory.
</p>
<pre>[% USE file('bar.html') %]
[% file.home %] # nothing
[% USE file('foo/bar.html') %]
[% file.home %] # ..
[% USE file('foo/bar/baz.html') %]
[% file.home %] # ../..</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_root" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">root</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The <code>root</code> item can be specified as a constructor argument,
indicating a root directory in which the named file resides. This is
otherwise set empty.
</p>
<pre>[% USE file('foo/bar.html', root='/tmp') %]
[% file.root %] # /tmp</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_abs" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">abs</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
This returns the absolute file path by constructing a path from the
<code>root</code> and <code>path</code> options.
</p>
<pre>[% USE file('foo/bar.html', root='/tmp') %]
[% file.path %] # foo/bar.html
[% file.root %] # /tmp
[% file.abs %] # /tmp/foo/bar.html</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="method_rel" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">rel(path)</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
This returns a relative path from the current file to another path
specified as an argument. It is constructed by appending the path to the
'<code>home</code>' item.
</p>
<pre>[% USE file('foo/bar/baz.html') %]
[% file.rel('wiz/waz.html') %] # ../../wiz/waz.html</pre>
</div>
</div>
</div>
</div>
<div class="section">
<div class="head">
<h1 id="EXAMPLES" onclick="switch_section(this)" title="Click title to show/hide section content.">EXAMPLES</h1>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<pre>[% USE file('/foo/bar/baz.html') %]
[% file.path %] # /foo/bar/baz.html
[% file.dir %] # /foo/bar
[% file.name %] # baz.html
[% file.home %] # ../..
[% file.root %] # ''
[% file.abs %] # /foo/bar/baz.html
[% file.ext %] # html
[% file.mtime %] # 987654321
[% file.atime %] # 987654321
[% file.uid %] # 500
[% file.user %] # abw</pre>
<pre>[% USE file('foo.html') %]
[% file.path %] # foo.html
[% file.dir %] # ''
[% file.name %] # foo.html
[% file.root %] # ''
[% file.home %] # ''
[% file.abs %] # foo.html</pre>
<pre>[% USE file('foo/bar/baz.html') %]
[% file.path %] # foo/bar/baz.html
[% file.dir %] # foo/bar
[% file.name %] # baz.html
[% file.root %] # ''
[% file.home %] # ../..
[% file.abs %] # foo/bar/baz.html</pre>
<pre>[% USE file('foo/bar/baz.html', root='/tmp') %]
[% file.path %] # foo/bar/baz.html
[% file.dir %] # foo/bar
[% file.name %] # baz.html
[% file.root %] # /tmp
[% file.home %] # ../..
[% file.abs %] # /tmp/foo/bar/baz.html</pre>
<pre># calculate other file paths relative to this file and its root
[% USE file('foo/bar/baz.html', root => '/tmp/tt2') %]
[% file.path('baz/qux.html') %] # ../../baz/qux.html
[% file.dir('wiz/woz.html') %] # ../../wiz/woz.html</pre>
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<p>
Michael Stevens wrote the original <code>Directory</code> plugin on which
this is based. Andy Wardley split it into separate <code>File</code> and
<code>Directory</code> plugins, added some extra code and documentation
for <code>VIEW</code> support, and made a few other minor tweaks.
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Copyright 2000-2007 Michael Stevens, Andy Wardley.
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This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
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<a href="../../../modules/Template/Plugin.html">Template::Plugin</a>, <a
href="../../../modules/Template/Plugin/Directory.html">Template::Plugin::Directory</a>, <a href="../../../modules/Template/View.html">Template::View</a>
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/modules/Template/Plugin/File.html last modified 10:54:59 31-May-2007
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Copyright © 1996-2007 <a href="http://wardley.org/">Andy Wardley</a>. All Rights Reserved.
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