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	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			=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	dpavlin	899	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	dpavlin	898	$self ? return $self : return undef;
120			}
121
122			=head2 fetch_rec
123
124			Return record with ID C<$mfn> from database
125
126	dpavlin	899	my $rec = $input->fetch_rec( $mfn, $filter_coderef );
127	dpavlin	898
128			=cut
129
130			sub fetch_rec {
131			my $self = shift;
132
133	dpavlin	899	my ( $mfn, $filter_coderef ) = @_;
134	dpavlin	898
135	dpavlin	899	return $self->{_rec}->[$mfn-1];
136	dpavlin	898	}
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	dpavlin	899	return $#{$self->{_rec}} + 1;
150	dpavlin	898	}
151
152	dpavlin	900	=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	dpavlin	898	=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