WebPAC/Input/Ovid.pm

package WebPAC::Input::Ovid;

use warnings;
use strict;

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

use Data::Dump qw/dump/;

=head1 NAME

WebPAC::Input::Ovid - support for Ovid citation export

=head1 VERSION

Version 0.01

=cut

our $VERSION = '0.01';

=head1 SYNOPSIS

Open file in Ovid citation export fromat

 my $input = new WebPAC::Input::Ovid(
        path => '/path/to/ovid-cites.txt',
 );

=head1 FUNCTIONS

=head2 new

Returns new low-level input API object

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

Options:

=over 4

=item path

path to Ovid export file

=back

=cut

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 $rec;
        my $size = 0;
        my $tag;

        $self->{_rec} = [];

        while( my $line = <$fh> ) {
                $line =~ s{[\r\n]+$}{};
                next if $line eq '';

                warn "<< $line\n";

                if ( $line =~ m/^<(\d+)>$/ ) {
                        my $expect_rec = $#{ $self->{_rec} } + 2;
                        warn "wrong Ovid record number: $1 != $expect_rec" unless $1 == $expect_rec;
                        push @{ $self->{_rec} }, $rec if $rec;
                        warn "## rec = ",dump( $rec ),$/;
                        $rec = { '000' => $1 };
                } elsif ( $line =~ /^(\w.+)/ ) {
                        $tag = $1;
                        warn "++ $tag\n";
                } elsif ( $line =~ /^\s\s(.+)/ ) {
                        my $v = $1;
                        $v =~ s{[\s\.]+$}{};
                        $rec->{$tag} = $v;
                } else {
                        warn "### skip: '$line'\n";
                }

        }

        # save last rec
        push @{ $self->{_rec} }, $rec if $rec;
        $self->{size} = $#{ $self->{_rec} } + 1;

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