WebPAC/Input/ISI.pm

package WebPAC::Input::ISI;

use warnings;
use strict;

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

use Data::Dump qw/dump/;

=head1 NAME

WebPAC::Input::ISI - support for ISI Export Format

=head1 VERSION

Version 0.02

=cut

our $VERSION = '0.02';

=head1 SYNOPSIS

Open file in ISI export fromat

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

=head1 FUNCTIONS

=head2 new

Returns new low-level input API object

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

Options:

=over 4

=item path

path to ISI 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}: $!");

        my ( $format, $version );

        my $line = <$fh>;
        chomp($line);
        if ( $line =~ /^FN\s(.+)$/) {
                $format = $1;
        } else {
                $log->logdie("first line of $arg->{path} has to be FN, but is: $line");
        }

        $line = <$fh>;
        chomp($line);
        if ( $line =~ /^VR\s(.+)$/) {
                $version = $1;
        } else {
                $log->logdie("second line of $arg->{path} has to be VN, but is: $line");
        }

        $log->info("opening $format $version database '$arg->{path}'");

        my $tag;
        my $rec;

        $self->{size} = 0;

        while( $line = <$fh> ) {
                chomp($line);

                my $v;

                if ( $line =~ /^(\S\S)\s(.+)$/ ) {
                                $tag = $1;
                                $v = $2;
                } elsif ( $line =~ /^\s{3}(.+)$/ ) {
                                $v = $1;
                } elsif ( $line eq 'ER' ) {
                        # join tags
                        foreach ( qw/AB DE ID TI/ ) {
                                $rec->{$_} = join(' ', @{ $rec->{$_} }) if defined $rec->{$_};
                        }
                        $rec->{'000'} = [ ++$self->{size} ];
                        push @{ $self->{_rec} }, $rec;
                        $rec = {};
                        $line = <$fh>;
                        chomp $line;
                        $log->logdie("expected blank like in ",$arg->{path}, " +$.: $line") unless ( $line eq '' );
                } elsif ( $line eq 'EF' ) {
                        last;
                } else {
                        $log->logdie("can't parse +$. $arg->{path} : $line");
                }

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

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

        }

        $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 SEE ALSO

L<http://isibasic.com/help/helpprn.html> is only sane source of document format which Google could find...
 
=head1 AUTHOR

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

=head1 COPYRIGHT & LICENSE

Copyright 2007 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::ISI
1	dpavlin	898	package WebPAC::Input::ISI;
2
3			use warnings;
4			use strict;
5
6			use WebPAC::Input;
7			use base qw/WebPAC::Common/;
8
9	dpavlin	904	use Data::Dump qw/dump/;
10
11	dpavlin	898	=head1 NAME
12
13			WebPAC::Input::ISI - support for ISI Export Format
14
15			=head1 VERSION
16
17	dpavlin	904	Version 0.02
18	dpavlin	898
19			=cut
20
21	dpavlin	904	our $VERSION = '0.02';
22	dpavlin	898
23			=head1 SYNOPSIS
24
25			Open file in ISI export fromat
26
27			my $input = new WebPAC::Input::ISI(
28			path => '/path/to/ISI/records.txt',
29			);
30
31			=head1 FUNCTIONS
32
33			=head2 new
34
35			Returns new low-level input API object
36
37			my $input = new WebPAC::Input::ISI(
38			path => '/path/to/ISI/records.txt'
39			filter => sub {
40			my ($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 ISI export file
53
54			=back
55
56			=cut
57
58	dpavlin	901	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	dpavlin	898	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			my ( $format, $version );
87
88			my $line = <$fh>;
89			chomp($line);
90			if ( $line =~ /^FN\s(.+)$/) {
91			$format = $1;
92			} else {
93			$log->logdie("first line of $arg->{path} has to be FN, but is: $line");
94			}
95
96			$line = <$fh>;
97			chomp($line);
98			if ( $line =~ /^VR\s(.+)$/) {
99			$version = $1;
100			} else {
101			$log->logdie("second line of $arg->{path} has to be VN, but is: $line");
102			}
103
104			$log->info("opening $format $version database '$arg->{path}'");
105
106	dpavlin	899	my $tag;
107			my $rec;
108
109	dpavlin	1077	$self->{size} = 0;
110
111	dpavlin	899	while( $line = <$fh> ) {
112			chomp($line);
113
114			my $v;
115
116			if ( $line =~ /^(\S\S)\s(.+)$/ ) {
117			$tag = $1;
118			$v = $2;
119			} elsif ( $line =~ /^\s{3}(.+)$/ ) {
120			$v = $1;
121			} elsif ( $line eq 'ER' ) {
122	dpavlin	901	# join tags
123	dpavlin	902	foreach ( qw/AB DE ID TI/ ) {
124	dpavlin	901	$rec->{$_} = join(' ', @{ $rec->{$_} }) if defined $rec->{$_};
125			}
126	dpavlin	1077	$rec->{'000'} = [ ++$self->{size} ];
127	dpavlin	899	push @{ $self->{_rec} }, $rec;
128			$rec = {};
129			$line = <$fh>;
130			chomp $line;
131			$log->logdie("expected blank like in ",$arg->{path}, " +$.: $line") unless ( $line eq '' );
132			} elsif ( $line eq 'EF' ) {
133			last;
134			} else {
135			$log->logdie("can't parse +$. $arg->{path} : $line");
136			}
137
138	dpavlin	904	if ( defined $v ) {
139			$v = $subfields->{$tag}->($v) if defined $subfields->{$tag};
140	dpavlin	901
141	dpavlin	904	$log->debug("$tag: ", sub { dump( $v ) });
142			push @{ $rec->{$tag} }, $v;
143			}
144	dpavlin	899
145			}
146
147			$log->debug("loaded ", $self->size, " records");
148
149	dpavlin	898	$self ? return $self : return undef;
150			}
151
152			=head2 fetch_rec
153
154			Return record with ID C<$mfn> from database
155
156	dpavlin	899	my $rec = $input->fetch_rec( $mfn, $filter_coderef );
157	dpavlin	898
158			=cut
159
160			sub fetch_rec {
161			my $self = shift;
162
163	dpavlin	899	my ( $mfn, $filter_coderef ) = @_;
164	dpavlin	898
165	dpavlin	899	return $self->{_rec}->[$mfn-1];
166	dpavlin	898	}
167
168
169			=head2 size
170
171			Return number of records in database
172
173			my $size = $input->size;
174
175			=cut
176
177			sub size {
178			my $self = shift;
179	dpavlin	1077	return $self->{size};
180	dpavlin	898	}
181
182	dpavlin	900	=head1 SEE ALSO
183
184			L<http://isibasic.com/help/helpprn.html> is only sane source of document format which Google could find...
185	dpavlin	901
186	dpavlin	898	=head1 AUTHOR
187
188			Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
189
190			=head1 COPYRIGHT & LICENSE
191
192			Copyright 2007 Dobrica Pavlinusic, All Rights Reserved.
193
194			This program is free software; you can redistribute it and/or modify it
195			under the same terms as Perl itself.
196
197			=cut
198
199			1; # End of WebPAC::Input::ISI