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	dpavlin	1089	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