WebPAC/Input/EBSCO.pm

package WebPAC::Input::EBSCO;

use warnings;
use strict;

use WebPAC::Input;
use base qw/WebPAC::Common/;

use Data::Dump qw/dump/;

=head1 NAME

WebPAC::Input::EBSCO - support for EBSCO text export

=head1 VERSION

Version 0.01

=cut

our $VERSION = '0.01';

=head1 SYNOPSIS

Open file in EBSCO text export fromat

 my $input = new WebPAC::Input::EBSCO(
        path => '/path/to/ebsco.txt',
 );

=head1 FUNCTIONS

=head2 new

Returns new low-level input API object

  my $input = new WebPAC::Input::EBSCO(
        path => '/path/to/ebsco.txt',
        filter => sub {
                my ($l,$field_nr) = @_;
                # do something with $l which is line of input file
                return $l;
        },
  }

Options:

=over 4

=item path

path to EBSCO export file

=back

=cut

my $subfields = {
        'CR' => sub {
                my @v = split(/, /, shift);
                my $f;
                foreach ( qw/author year reference volume page/ ) {
                        if ( my $tmp = shift @v ) {
                                $f->{$_} = $tmp;
                        }
                }
                if ( $f->{author} =~ /^\*(.+)/ ) {
                        delete $f->{author};
                        $f->{institution} = $1;
                }
                return $f;
        },
};

sub new {
        my $class = shift;
        my $self = {@_};
        bless($self, $class);

        my $arg = {@_};

        my $log = $self->_get_logger();

        open( my $fh, '<', $arg->{path} ) || $log->logconfess("can't open $arg->{path}: $!");

        $log->info("reading '$arg->{path}'");

        my $tag;
        my $rec;

        $self->{size} = 0;

        while( my $line = <$fh> ) {
                chomp($line);
                # remove extra spaces at end (?!)
                $line =~ s/\s+$//;

                my $v;

                if ( $line =~ m/^-+$/ ) {
                        # join tags
#                       foreach ( qw/AB DE ID TI/ ) {
#                               $rec->{$_} = join(' ', @{ $rec->{$_} }) if defined $rec->{$_};
#                       }
                        $rec->{'000'} = [ ++$self->{size} ];
                        push @{ $self->{_rec} }, $rec;
                        $rec = {};
                } elsif ( $line =~ /^(\S\S)-\s(.+)$/ ) {
                                $tag = $1;
                                $v = $2;
                } else {
                        warn "### skip: $line\n";
                }

                if ( defined $v ) {
                        $v = $subfields->{$tag}->($v) if defined $subfields->{$tag};

                        $log->debug("$tag: ", sub { dump( $v ) });
                        push @{ $rec->{$tag} }, $v;
                }

        }

        # save last rec
        $rec->{'000'} = [ ++$self->{size} ];
        push @{ $self->{_rec} }, $rec;

        $log->debug("loaded ", $self->size, " records");

        $self ? return $self : return undef;
}

=head2 fetch_rec

Return record with ID C<$mfn> from database

  my $rec = $input->fetch_rec( $mfn, $filter_coderef );

=cut

sub fetch_rec {
        my $self = shift;

        my ( $mfn, $filter_coderef ) = @_;

        return $self->{_rec}->[$mfn-1];
}


=head2 size

Return number of records in database

  my $size = $input->size;

=cut

sub size {
        my $self = shift;
        return $self->{size};
}

=head1 AUTHOR

Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>

=head1 COPYRIGHT & LICENSE

Copyright 2008 Dobrica Pavlinusic, All Rights Reserved.

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

=cut

1; # End of WebPAC::Input::EBSCO
1	package WebPAC::Input::EBSCO;
2
3	use warnings;
4	use strict;
5
6	use WebPAC::Input;
7	use base qw/WebPAC::Common/;
8
9	use Data::Dump qw/dump/;
10
11	=head1 NAME
12
13	WebPAC::Input::EBSCO - support for EBSCO text export
14
15	=head1 VERSION
16
17	Version 0.01
18
19	=cut
20
21	our $VERSION = '0.01';
22
23	=head1 SYNOPSIS
24
25	Open file in EBSCO text export fromat
26
27	my $input = new WebPAC::Input::EBSCO(
28	path => '/path/to/ebsco.txt',
29	);
30
31	=head1 FUNCTIONS
32
33	=head2 new
34
35	Returns new low-level input API object
36
37	my $input = new WebPAC::Input::EBSCO(
38	path => '/path/to/ebsco.txt',
39	filter => sub {
40	my ($l,$field_nr) = @_;
41	# do something with $l which is line of input file
42	return $l;
43	},
44	}
45
46	Options:
47
48	=over 4
49
50	=item path
51
52	path to EBSCO export file
53
54	=back
55
56	=cut
57
58	my $subfields = {
59	'CR' => sub {
60	my @v = split(/, /, shift);
61	my $f;
62	foreach ( qw/author year reference volume page/ ) {
63	if ( my $tmp = shift @v ) {
64	$f->{$_} = $tmp;
65	}
66	}
67	if ( $f->{author} =~ /^\*(.+)/ ) {
68	delete $f->{author};
69	$f->{institution} = $1;
70	}
71	return $f;
72	},
73	};
74
75	sub new {
76	my $class = shift;
77	my $self = {@_};
78	bless($self, $class);
79
80	my $arg = {@_};
81
82	my $log = $self->_get_logger();
83
84	open( my $fh, '<', $arg->{path} ) \|\| $log->logconfess("can't open $arg->{path}: $!");
85
86	$log->info("reading '$arg->{path}'");
87
88	my $tag;
89	my $rec;
90
91	$self->{size} = 0;
92
93	while( my $line = <$fh> ) {
94	chomp($line);
95	# remove extra spaces at end (?!)
96	$line =~ s/\s+$//;
97
98	my $v;
99
100	if ( $line =~ m/^-+$/ ) {
101	# join tags
102	# foreach ( qw/AB DE ID TI/ ) {
103	# $rec->{$_} = join(' ', @{ $rec->{$_} }) if defined $rec->{$_};
104	# }
105	$rec->{'000'} = [ ++$self->{size} ];
106	push @{ $self->{_rec} }, $rec;
107	$rec = {};
108	} elsif ( $line =~ /^(\S\S)-\s(.+)$/ ) {
109	$tag = $1;
110	$v = $2;
111	} else {
112	warn "### skip: $line\n";
113	}
114
115	if ( defined $v ) {
116	$v = $subfields->{$tag}->($v) if defined $subfields->{$tag};
117
118	$log->debug("$tag: ", sub { dump( $v ) });
119	push @{ $rec->{$tag} }, $v;
120	}
121
122	}
123
124	# save last rec
125	$rec->{'000'} = [ ++$self->{size} ];
126	push @{ $self->{_rec} }, $rec;
127
128	$log->debug("loaded ", $self->size, " records");
129
130	$self ? return $self : return undef;
131	}
132
133	=head2 fetch_rec
134
135	Return record with ID C<$mfn> from database
136
137	my $rec = $input->fetch_rec( $mfn, $filter_coderef );
138
139	=cut
140
141	sub fetch_rec {
142	my $self = shift;
143
144	my ( $mfn, $filter_coderef ) = @_;
145
146	return $self->{_rec}->[$mfn-1];
147	}
148
149
150	=head2 size
151
152	Return number of records in database
153
154	my $size = $input->size;
155
156	=cut
157
158	sub size {
159	my $self = shift;
160	return $self->{size};
161	}
162
163	=head1 AUTHOR
164
165	Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
166
167	=head1 COPYRIGHT & LICENSE
168
169	Copyright 2008 Dobrica Pavlinusic, All Rights Reserved.
170
171	This program is free software; you can redistribute it and/or modify it
172	under the same terms as Perl itself.
173
174	=cut
175
176	1; # End of WebPAC::Input::EBSCO