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- #============================================================= -*-Perl-*-
- #
- # Template::Plugin::Datafile
- #
- # DESCRIPTION
- #
- # Template Toolkit Plugin which reads a datafile and constructs a
- # list object containing hashes representing records in the file.
- #
- # AUTHOR
- # Andy Wardley <abw@kfs.org>
- #
- # COPYRIGHT
- # Copyright (C) 1996-2000 Andy Wardley. All Rights Reserved.
- # Copyright (C) 1998-2000 Canon Research Centre Europe Ltd.
- #
- # This module is free software; you can redistribute it and/or
- # modify it under the same terms as Perl itself.
- #
- #----------------------------------------------------------------------------
- #
- # $Id: Datafile.pm,v 2.66 2004/01/13 16:20:38 abw Exp $
- #
- #============================================================================
-
- package Template::Plugin::Datafile;
-
- require 5.004;
-
- use strict;
- use vars qw( @ISA $VERSION );
- use base qw( Template::Plugin );
- use Template::Plugin;
-
- $VERSION = sprintf("%d.%02d", q$Revision: 2.66 $ =~ /(\d+)\.(\d+)/);
-
- sub new {
- my ($class, $context, $filename, $params) = @_;
- my ($delim, $line, @fields, @data, @results);
- my $self = [ ];
- local *FD;
- local $/ = "\n";
-
- $params ||= { };
- $delim = $params->{'delim'} || ':';
- $delim = quotemeta($delim);
-
- return $class->fail("No filename specified")
- unless $filename;
-
- open(FD, $filename)
- || return $class->fail("$filename: $!");
-
- # first line of file should contain field definitions
- while (! $line || $line =~ /^#/) {
- $line = <FD>;
- chomp $line;
- $line =~ s/\r$//;
- }
-
- (@fields = split(/\s*$delim\s*/, $line))
- || return $class->fail("first line of file must contain field names");
-
- # read each line of the file
- while (<FD>) {
- chomp;
- s/\r$//;
-
- # ignore comments and blank lines
- next if /^#/ || /^\s*$/;
-
- # split line into fields
- @data = split(/\s*$delim\s*/);
-
- # create hash record to represent data
- my %record;
- @record{ @fields } = @data;
-
- push(@$self, \%record);
- }
-
- # return $self;
- bless $self, $class;
- }
-
-
- sub as_list {
- return $_[0];
- }
-
-
- 1;
-
- __END__
-
-
- #------------------------------------------------------------------------
- # IMPORTANT NOTE
- # This documentation is generated automatically from source
- # templates. Any changes you make here may be lost.
- #
- # The 'docsrc' documentation source bundle is available for download
- # from http://www.template-toolkit.org/docs.html and contains all
- # the source templates, XML files, scripts, etc., from which the
- # documentation for the Template Toolkit is built.
- #------------------------------------------------------------------------
-
- =head1 NAME
-
- Template::Plugin::Datafile - Plugin to construct records from a simple data file
-
- =head1 SYNOPSIS
-
- [% USE mydata = datafile('/path/to/datafile') %]
- [% USE mydata = datafile('/path/to/datafile', delim = '|') %]
-
- [% FOREACH record = mydata %]
- [% record.this %] [% record.that %]
- [% END %]
-
- =head1 DESCRIPTION
-
- This plugin provides a simple facility to construct a list of hash
- references, each of which represents a data record of known structure,
- from a data file.
-
- [% USE datafile(filename) %]
-
- A absolute filename must be specified (for this initial implementation at
- least - in a future version it might also use the INCLUDE_PATH). An
- optional 'delim' parameter may also be provided to specify an alternate
- delimiter character.
-
- [% USE userlist = datafile('/path/to/file/users') %]
- [% USE things = datafile('items', delim = '|') %]
-
- The format of the file is intentionally simple. The first line
- defines the field names, delimited by colons with optional surrounding
- whitespace. Subsequent lines then defines records containing data
- items, also delimited by colons. e.g.
-
- id : name : email : tel
- abw : Andy Wardley : abw@cre.canon.co.uk : 555-1234
- neilb : Neil Bowers : neilb@cre.canon.co.uk : 555-9876
-
- Each line is read, split into composite fields, and then used to
- initialise a hash array containing the field names as relevant keys.
- The plugin returns a blessed list reference containing the hash
- references in the order as defined in the file.
-
- [% FOREACH user = userlist %]
- [% user.id %]: [% user.name %]
- [% END %]
-
- The first line of the file B<must> contain the field definitions.
- After the first line, blank lines will be ignored, along with comment
- line which start with a '#'.
-
- =head1 BUGS
-
- Should handle file names relative to INCLUDE_PATH.
- Doesn't permit use of ':' in a field. Some escaping mechanism is required.
-
- =head1 AUTHOR
-
- Andy Wardley E<lt>abw@andywardley.comE<gt>
-
- L<http://www.andywardley.com/|http://www.andywardley.com/>
-
-
-
-
- =head1 VERSION
-
- 2.66, distributed as part of the
- Template Toolkit version 2.13, released on 30 January 2004.
-
- =head1 COPYRIGHT
-
- Copyright (C) 1996-2004 Andy Wardley. All Rights Reserved.
- Copyright (C) 1998-2002 Canon Research Centre Europe Ltd.
-
- This module is free software; you can redistribute it and/or
- modify it under the same terms as Perl itself.
-
- =head1 SEE ALSO
-
- L<Template::Plugin|Template::Plugin>
-
- =cut
-
- # Local Variables:
- # mode: perl
- # perl-indent-level: 4
- # indent-tabs-mode: nil
- # End:
- #
- # vim: expandtab shiftwidth=4:
-