oracular (3) Template::Plugin::File.3pm.gz

NAME

       Template::Plugin::File - Plugin providing information about files

SYNOPSIS

           [% USE File(filepath) %]
           [% File.path %]         # full path
           [% File.name %]         # filename
           [% File.dir %]          # directory

DESCRIPTION

       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.

       A file name or path should be specified as a constructor argument.  e.g.

           [% USE File('foo.html') %]
           [% USE File('foo/bar/baz.html') %]
           [% USE File('/foo/bar/baz.html') %]

       The file should exist on the current file system (unless "nostat" option set, see below) as an absolute
       file when specified with as leading '"/"' as per '"/foo/bar/baz.html"', or otherwise as one relative to
       the current working directory.  The constructor performs a stat() on the file and makes the 13 elements
       returned available as the plugin items:

           dev ino mode nlink uid gid rdev size
           atime mtime ctime blksize blocks

       e.g.

           [% USE File('/foo/bar/baz.html') %]

           [% File.mtime %]
           [% File.mode %]
           ...

       In addition, the "user" and "group" items are set to contain the user and group names as returned by
       calls to getpwuid() and getgrgid() for the file "uid" and "gid" elements, respectively.  On Win32
       platforms on which getpwuid() and getgrid() are not available, these values are undefined.

           [% USE File('/tmp/foo.html') %]
           [% File.uid %]      # e.g. 500
           [% File.user %]     # e.g. abw

       This user/group lookup can be disabled by setting the "noid" option.

           [% USE File('/tmp/foo.html', noid=1) %]
           [% File.uid %]      # e.g. 500
           [% File.user %]     # nothing

       The "isdir" flag will be set if the file is a directory.

           [% USE File('/tmp') %]
           [% File.isdir %]    # 1

       If the stat() on the file fails (e.g. file doesn't exists, bad permission, etc) then the constructor will
       throw a "File" exception.  This can be caught within a "TRY...CATCH" block.

           [% TRY %]
              [% USE File('/tmp/myfile') %]
              File exists!
           [% CATCH File %]
              File error: [% error.info %]
           [% END %]

       Note the capitalisation of the exception type, '"File"', to indicate an error thrown by the "File"
       plugin, to distinguish it from a regular "file" exception thrown by the Template Toolkit.

       Note that the "File" plugin can also be referenced by the lower case name '"file"'.  However, exceptions
       are always thrown of the "File" type, regardless of the capitalisation of the plugin named used.

           [% USE file('foo.html') %]
           [% file.mtime %]

       As with any other Template Toolkit plugin, an alternate name can be specified for the object created.

           [% USE foo = file('foo.html') %]
           [% foo.mtime %]

       The "nostat" option can be specified to prevent the plugin constructor from performing a stat() 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 stat() will be set empty.

           [% USE file('/some/where/over/the/rainbow.html', nostat=1)
           [% file.mtime %]     # nothing

METHODS

       All "File" plugins, regardless of the "nostat" option, have set a number of items relating to the
       original path specified.

   path
       The full, original file path specified to the constructor.

           [% USE file('/foo/bar.html') %]
           [% file.path %]     # /foo/bar.html

   name
       The name of the file without any leading directories.

           [% USE file('/foo/bar.html') %]
           [% file.name %]     # bar.html

   dir
       The directory element of the path with the filename removed.

           [% USE file('/foo/bar.html') %]
           [% file.name %]     # /foo

   ext
       The file extension, if any, appearing at the end of the path following a '"."' (not included in the
       extension).

           [% USE file('/foo/bar.html') %]
           [% file.ext %]      # html

   home
       This contains a string of the form '"../.."' to represent the upward path from a file to its root
       directory.

           [% USE file('bar.html') %]
           [% file.home %]     # nothing

           [% USE file('foo/bar.html') %]
           [% file.home %]     # ..

           [% USE file('foo/bar/baz.html') %]
           [% file.home %]     # ../..

   root
       The "root" item can be specified as a constructor argument, indicating a root directory in which the
       named file resides.  This is otherwise set empty.

           [% USE file('foo/bar.html', root='/tmp') %]
           [% file.root %]     # /tmp

   abs
       This returns the absolute file path by constructing a path from the "root" and "path" options.

           [% USE file('foo/bar.html', root='/tmp') %]
           [% file.path %]     # foo/bar.html
           [% file.root %]     # /tmp
           [% file.abs %]      # /tmp/foo/bar.html

   rel(path)
       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 '"home"' item.

           [% USE file('foo/bar/baz.html') %]
           [% file.rel('wiz/waz.html') %]      # ../../wiz/waz.html

EXAMPLES

           [% 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

           [% USE file('foo.html') %]

           [% file.path %]           # foo.html
           [% file.dir  %]       # ''
           [% file.name %]           # foo.html
           [% file.root %]       # ''
           [% file.home %]       # ''
           [% file.abs  %]       # foo.html

           [% 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

           [% 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

           # 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

AUTHORS

       Michael Stevens wrote the original "Directory" plugin on which this is based.  Andy Wardley split it into
       separate "File" and "Directory" plugins, added some extra code and documentation for "VIEW" support, and
       made a few other minor tweaks.

COPYRIGHT

       Copyright 2000-2007 Michael Stevens, Andy Wardley.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

SEE ALSO

       Template::Plugin, Template::Plugin::Directory, Template::View