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package WebPAC::Input::PDF; |
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|
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use warnings; |
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use strict; |
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|
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use WebPAC::Input; |
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use base qw/WebPAC::Common/; |
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|
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use CAM::PDF; |
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use Carp qw/confess/; |
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|
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use Data::Dump qw/dump/; |
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|
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=head1 NAME |
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|
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WebPAC::Input::PDF - try to parse PDF tabular data |
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|
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=head1 SYNOPSIS |
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|
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Open PDF file |
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|
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my $input = new WebPAC::Input::PDF( |
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path => '/path/to/file.pdf', |
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); |
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|
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=head1 FUNCTIONS |
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|
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=head2 new |
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|
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Returns new low-level input API object |
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|
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my $input = new WebPAC::Input::PDF( |
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path => '/path/to/file.pdf' |
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filter => sub { |
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my ($l,$field_nr) = @_; |
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# do something with $l which is line of input file |
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return $l; |
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}, |
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} |
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|
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Options: |
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|
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=over 4 |
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|
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=item path |
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|
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path to PDF file |
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|
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=back |
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|
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=cut |
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|
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my $verbose = 1; |
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|
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sub new { |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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|
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my $arg = {@_}; |
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|
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my $log = $self->_get_logger(); |
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|
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my $file = $arg->{path} || $log->logide("need path"); |
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|
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my $doc = CAM::PDF->new($file) || $log->logdie( $CAM::PDF::errstr ); |
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|
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my $pages = $doc->numPages(); |
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|
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$log->info("opend $file with $pages pages"); |
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|
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my @lines = (); |
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|
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foreach my $p ( 1 .. $pages ) { |
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my $tree = $doc->getPageContentTree($p); |
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if ($tree) { |
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my $out; |
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|
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confess "expect array for blocks" unless ref($tree->{blocks}) eq 'ARRAY'; |
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|
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foreach my $blocks ( @{ $tree->{blocks} } ) { |
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foreach my $block ( $blocks ) { |
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next unless defined $block->{value}; |
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foreach my $value ( $block->{value} ) { |
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confess "expect array for value" unless ref($value) eq 'ARRAY'; |
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foreach my $v ( @$value ) { |
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next unless defined $v->{args}; |
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#warn "## v ",ref($v),dump( $v ); |
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my @data; |
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foreach my $args ( $v->{args} ) { |
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#warn "## args ",ref($args),dump( $args ); |
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confess "expect array for args" unless ref($args) eq 'ARRAY'; |
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foreach my $a ( @$args ) { |
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if ( $a->{type} eq 'array' ) { |
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#warn "## a ",ref($a),dump( $a ); |
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foreach my $av ( @{ $a->{value} } ) { |
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next unless $av->{type} eq 'string'; |
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#warn "## av ",ref($av),dump( $av ); |
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push @data, $av->{value}; |
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} |
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} elsif ( $a->{type} eq 'string' ) { |
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push @data, $a->{value}; |
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} |
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} |
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next unless @data; |
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warn "data $#data = ",dump(@data); |
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## FIXME data specific! |
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if ( $#data == 4 ) { |
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push @lines, [ @data ]; |
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} elsif ( $#data == 0 && $#lines >= 0 ) { |
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my $v = shift @data; |
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warn "add $#lines to ",dump( $lines[ $#lines ]->[4] ); |
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$lines[ $#lines ]->[4] = $lines[ $#lines ]->[4] . ' ' . $v; |
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warn "added to ",dump( $lines[ $#lines ] ); |
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} else { |
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$log->warn("ignored: ",dump( @data )); |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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|
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$self->{_lines} = \@lines; |
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|
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$log->debug("loaded ", $self->size, " records", sub { dump( @lines ) }); |
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|
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$self ? return $self : return undef; |
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} |
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|
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=head2 fetch_rec |
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|
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Return record with ID C<$mfn> from database |
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|
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my $rec = $input->fetch_rec( $mfn, $filter_coderef ); |
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|
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Records are returned as field C<A>, C<B> and so on... |
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|
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Last supported column is C<ZZ>. |
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|
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=cut |
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|
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sub fetch_rec { |
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my $self = shift; |
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|
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my ( $mfn, $filter_coderef ) = @_; |
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|
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my $rec = { |
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'000' => [ $mfn ], |
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}; |
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|
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my $line = $self->{_lines}->[ $mfn - 1 ] || return; |
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confess "expected ARRAY for _lines $mfn" unless ref($line) eq 'ARRAY'; |
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|
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# warn "## line = ",dump( $line ); |
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|
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my $col = 'A'; |
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my $c = 0; |
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foreach my $e ( @$line ) { |
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$rec->{$col} = $e; |
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$c++; |
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# FIXME what about columns > ZZ |
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if ( $col eq 'Z' ) { |
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$col .= 'AA'; |
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} elsif ( $col eq 'ZZ' ) { |
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$self->_get_logger()->logwarn("ignoring colums above ZZ (original ", $#$line + 1, " > $c max columns)"); |
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last; |
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} elsif ( $col =~ m/([A-Z])Z$/ ) { |
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$col .= $1++ . 'A'; |
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} else { |
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$col++; |
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} |
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} |
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|
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# warn "## rec = ",dump( $rec ); |
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|
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return $rec; |
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} |
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|
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|
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=head2 size |
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|
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Return number of records in database |
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|
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my $size = $input->size; |
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|
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=cut |
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|
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sub size { |
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my $self = shift; |
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return $#{$self->{_lines}} + 1; |
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} |
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|
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|
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=head1 AUTHOR |
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|
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Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
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|
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=head1 COPYRIGHT & LICENSE |
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|
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Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
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|
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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|
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=cut |
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|
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1; # End of WebPAC::Input::PDF |
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