WebPAC/Input/ISI.pm

package WebPAC::Input::ISI;

use warnings;
use strict;

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

=head1 NAME

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

=head1 VERSION

Version 0.00

=cut

our $VERSION = '0.00';


=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

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;

        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' ) {
                        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");
                }

                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->{_rec}} + 1;
}

=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	package WebPAC::Input::ISI;
2
3	use warnings;
4	use strict;
5
6	use WebPAC::Input;
7	use base qw/WebPAC::Common/;
8
9	=head1 NAME
10
11	WebPAC::Input::ISI - support for ISI Export Format
12
13	=head1 VERSION
14
15	Version 0.00
16
17	=cut
18
19	our $VERSION = '0.00';
20
21
22	=head1 SYNOPSIS
23
24	Open file in ISI export fromat
25
26	my $input = new WebPAC::Input::ISI(
27	path => '/path/to/ISI/records.txt',
28	);
29
30	=head1 FUNCTIONS
31
32	=head2 new
33
34	Returns new low-level input API object
35
36	my $input = new WebPAC::Input::ISI(
37	path => '/path/to/ISI/records.txt'
38	filter => sub {
39	my ($l,$field_nr) = @_;
40	# do something with $l which is line of input file
41	return $l;
42	},
43	}
44
45	Options:
46
47	=over 4
48
49	=item path
50
51	path to ISI export file
52
53	=back
54
55	=cut
56
57	sub new {
58	my $class = shift;
59	my $self = {@_};
60	bless($self, $class);
61
62	my $arg = {@_};
63
64	my $log = $self->_get_logger();
65
66	open( my $fh, '<', $arg->{path} ) \|\| $log->logconfess("can't open $arg->{path}: $!");
67
68	my ( $format, $version );
69
70	my $line = <$fh>;
71	chomp($line);
72	if ( $line =~ /^FN\s(.+)$/) {
73	$format = $1;
74	} else {
75	$log->logdie("first line of $arg->{path} has to be FN, but is: $line");
76	}
77
78	$line = <$fh>;
79	chomp($line);
80	if ( $line =~ /^VR\s(.+)$/) {
81	$version = $1;
82	} else {
83	$log->logdie("second line of $arg->{path} has to be VN, but is: $line");
84	}
85
86	$log->info("opening $format $version database '$arg->{path}'");
87
88	my $tag;
89	my $rec;
90
91	while( $line = <$fh> ) {
92	chomp($line);
93
94	my $v;
95
96	if ( $line =~ /^(\S\S)\s(.+)$/ ) {
97	$tag = $1;
98	$v = $2;
99	} elsif ( $line =~ /^\s{3}(.+)$/ ) {
100	$v = $1;
101	} elsif ( $line eq 'ER' ) {
102	push @{ $self->{_rec} }, $rec;
103	$rec = {};
104	$line = <$fh>;
105	chomp $line;
106	$log->logdie("expected blank like in ",$arg->{path}, " +$.: $line") unless ( $line eq '' );
107	} elsif ( $line eq 'EF' ) {
108	last;
109	} else {
110	$log->logdie("can't parse +$. $arg->{path} : $line");
111	}
112
113	push @{ $rec->{$tag} }, $v;
114
115	}
116
117	$log->debug("loaded ", $self->size, " records");
118
119	$self ? return $self : return undef;
120	}
121
122	=head2 fetch_rec
123
124	Return record with ID C<$mfn> from database
125
126	my $rec = $input->fetch_rec( $mfn, $filter_coderef );
127
128	=cut
129
130	sub fetch_rec {
131	my $self = shift;
132
133	my ( $mfn, $filter_coderef ) = @_;
134
135	return $self->{_rec}->[$mfn-1];
136	}
137
138
139	=head2 size
140
141	Return number of records in database
142
143	my $size = $input->size;
144
145	=cut
146
147	sub size {
148	my $self = shift;
149	return $#{$self->{_rec}} + 1;
150	}
151
152	=head1 SEE ALSO
153
154	L<http://isibasic.com/help/helpprn.html> is only sane source of document format which Google could find...
155
156	=head1 AUTHOR
157
158	Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
159
160	=head1 COPYRIGHT & LICENSE
161
162	Copyright 2007 Dobrica Pavlinusic, All Rights Reserved.
163
164	This program is free software; you can redistribute it and/or modify it
165	under the same terms as Perl itself.
166
167	=cut
168
169	1; # End of WebPAC::Input::ISI