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package WebPAC::Validate; |
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use warnings; |
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use strict; |
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use blib; |
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use base 'WebPAC::Common'; |
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use File::Slurp; |
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use List::Util qw/first/; |
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use Data::Dump qw/dump/; |
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use WebPAC::Normalize qw/_pack_subfields_hash/; |
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use Storable qw/dclone/; |
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=head1 NAME |
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WebPAC::Validate - provide simple validation for records |
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=head1 VERSION |
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Version 0.12 |
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=cut |
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our $VERSION = '0.12'; |
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=head1 SYNOPSIS |
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This module provide a simple way to validate your file against a simple |
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configuration file in following format: |
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# field 10 doesn't have any subfields |
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10 |
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# same with 101 |
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101 |
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# field 200 have valid subfields a-g |
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# and field e is repeatable |
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200 a b c d e* f g |
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# field 205 can have only subfield a |
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# and must exists |
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205! a |
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# while 210 can have a c or d |
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210 a c d |
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# field which is ignored in validation |
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999- |
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=head1 FUNCTIONS |
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=head2 new |
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Create new validation object |
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my $validate = new WebPAC::Validate( |
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path => 'conf/validate/file', |
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delimiters => [ ' : ', ' / ', ' ; ', ' , ' ], |
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delimiters_path => 'conf/validate/delimiters/file', |
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); |
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Optional parametar C<delimiters> will turn on validating of delimiters. Be |
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careful here, those delimiters are just stuck into regex, so they can |
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contain L<perlre> regexpes. |
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=cut |
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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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my $log = $self->_get_logger(); |
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$log->logdie("need path or delimiters_path") unless ( $self->{path} || $self->{delimiters_path} ); |
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if ( $self->{path} ) { |
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my $v_file = read_file( $self->{path} ) || |
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$log->logdie("can't open validate path $self->{path}: $!"); |
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my $v; |
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my $curr_line = 1; |
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foreach my $l (split(/[\n\r]+/, $v_file)) { |
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$curr_line++; |
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# skip comments and whitespaces |
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next if ($l =~ /^#/ || $l =~ /^\s*$/); |
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$l =~ s/^\s+//; |
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$l =~ s/\s+$//; |
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my @d = split(/\s+/, $l); |
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my $fld = shift @d; |
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if ($fld =~ s/!$//) { |
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$self->{must_exist}->{$fld}++; |
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} elsif ($fld =~ s/-$//) { |
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$self->{dont_validate}->{$fld}++; |
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} |
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$log->logdie("need field name in line $curr_line: $l") unless (defined($fld)); |
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if (@d) { |
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$v->{$fld} = [ map { |
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my $sf = $_; |
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if ( $sf =~ s/!(\*)?$/$1/ ) { |
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$self->{must_exist_sf}->{ $fld }->{ $sf }++; |
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}; |
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$sf; |
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} @d ]; |
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} else { |
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$v->{$fld} = 1; |
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} |
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} |
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$log->debug("current validation rules: ", dump($v)); |
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$self->{rules} = $v; |
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$log->info("validation uses rules from $self->{path}"); |
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} |
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if ( $self->{delimiters} ) { |
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$self->{delimiters_regex} = '(\^[a-z0-9]|' . join('|', @{ $self->{delimiters} }) . ')'; |
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$log->info("validation check delimiters with regex $self->{delimiters_regex}"); |
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} |
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if ( my $path = $self->{delimiters_path} ) { |
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if ( -e $path ) { |
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$log->info("using delimiter validation rules from $path"); |
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open(my $d, $path) || $log->fatal("can't open $path: $!"); |
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while(<$d>) { |
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chomp($d); |
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if (/^\s*(#*)\s*(\d+)\t+(\d+)\t+(.*)$/) { |
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my ($comment,$field,$count,$template) = ($1,$2,$3,$4); |
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$self->{_validate_delimiters_templates}->{$field}->{$template} = $count unless ($comment); |
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} else { |
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warn "## ignored $d\n"; |
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} |
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} |
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close($d); |
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#warn "_validate_delimiters_templates = ",dump( $self->{_validate_delimiters_templates} ); |
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} else { |
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$log->warn("delimiters path $path doesn't exist, it will be created after this run"); |
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} |
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} |
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$self ? return $self : return undef; |
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} |
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=head2 validate_rec |
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Validate record and return errors |
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my @errors = $validate->validate_rec( $rec, $rec_dump ); |
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=cut |
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sub validate_rec { |
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my $self = shift; |
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my $log = $self->_get_logger(); |
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my $rec = shift || $log->logdie("validate_rec need record"); |
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my $rec_dump = shift; |
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$log->logdie("rec isn't HASH") unless (ref($rec) eq 'HASH'); |
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# $log->logdie("can't find validation rules") unless (my $r = $self->{rules}); |
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my $r = $self->{rules}; |
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my $errors; |
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$log->debug("rec = ", sub { dump($rec) }, "keys = ", keys %{ $rec }); |
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my $fields; |
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foreach my $f (keys %{ $rec }) { |
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next if (!defined($f) || $f eq '' || $f eq '000'); |
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# first check delimiters |
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if ( my $regex = $self->{delimiters_regex} ) { |
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foreach my $v (@{ $rec->{$f} }) { |
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my $l = _pack_subfields_hash( $v, 1 ); |
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my $subfield_dump = $l; |
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my $template = ''; |
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$l =~ s/$regex/$template.=$1/eg; |
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#warn "## template: $template\n"; |
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if ( $template ) { |
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$self->{_delimiters_templates}->{$f}->{$template}++; |
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if ( my $v = $self->{_validate_delimiters_templates} ) { |
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if ( ! defined( $v->{$f}->{$template} ) ) { |
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$errors->{$f}->{potentially_invalid_combination} = $template; |
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$errors->{$f}->{dump} = $subfield_dump; |
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#} else { |
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# warn "## $f $template ok\n"; |
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} |
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} |
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} |
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} |
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} |
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next unless ( $r ); # skip validation of no rules are specified |
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next if (defined( $self->{dont_validate}->{$f} )); |
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# track field usage |
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$fields->{$f}++; |
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if ( ! defined($r->{$f}) ) { |
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$errors->{ $f }->{unexpected} = "this field is not expected"; |
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next; |
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} |
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if (ref($rec->{$f}) ne 'ARRAY') { |
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$errors->{ $f }->{not_repeatable} = "probably bug in parsing input data"; |
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next; |
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} |
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foreach my $v (@{ $rec->{$f} }) { |
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# can we have subfields? |
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if (ref($r->{$f}) eq 'ARRAY') { |
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# are values hashes? (has subfields) |
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if (! defined($v)) { |
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# $errors->{$f}->{empty} = undef; |
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# $errors->{dump} = $rec_dump if ($rec_dump); |
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} elsif (ref($v) ne 'HASH') { |
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$errors->{$f}->{missing_subfield} = join(",", @{ $r->{$f} }) . " required"; |
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next; |
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} else { |
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my $h = dclone( $v ); |
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my $sf_repeatable; |
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delete($v->{subfields}) if (defined($v->{subfields})); |
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my $subfields; |
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foreach my $sf (keys %{ $v }) { |
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$subfields->{ $sf }++; |
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# is non-repeatable but with multiple values? |
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if ( ! first { $_ eq $sf.'*' } @{$r->{$f}} ) { |
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if ( ref($v->{$sf}) eq 'ARRAY' ) { |
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$sf_repeatable->{$sf}++; |
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}; |
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if (! first { $_ eq $sf } @{ $r->{$f} }) { |
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$errors->{ $f }->{subfield}->{extra}->{$sf}++; |
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} |
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} |
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} |
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if (my @r_sf = sort keys( %$sf_repeatable )) { |
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foreach my $sf (@r_sf) { |
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$errors->{$f}->{subfield}->{extra_repeatable}->{$sf}++; |
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$errors->{$f}->{dump} = _pack_subfields_hash( $h, 1 ); |
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} |
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} |
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if ( defined( $self->{must_exist_sf}->{$f} ) ) { |
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foreach my $sf (sort keys %{ $self->{must_exist_sf}->{$f} }) { |
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#warn "====> $f $sf must exist\n"; |
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$errors->{$f}->{subfield}->{missing}->{$sf}++ |
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unless defined( $subfields->{$sf} ); |
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} |
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} |
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} |
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} elsif (ref($v) eq 'HASH') { |
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$errors->{$f}->{unexpected_subfields}++; |
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$errors->{$f}->{dump} = _pack_subfields_hash( $v, 1 ); |
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} |
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} |
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} |
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$log->debug("_delimiters_templates = ", sub { dump( $self->{_delimiters_templates} ) } ); |
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foreach my $must (sort keys %{ $self->{must_exist} }) { |
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next if ($fields->{$must}); |
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$errors->{$must}->{missing}++; |
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$errors->{dump} = $rec_dump if ($rec_dump); |
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} |
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if ($errors) { |
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$log->debug("errors: ", $self->report_error( $errors ) ); |
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my $mfn = $rec->{'000'}->[0] || $log->logconfess("record ", sub { dump( $rec ) }, " doesn't have MFN"); |
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$self->{errors}->{$mfn} = $errors; |
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} |
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#$log->logcluck("return from this function is ARRAY") unless wantarray; |
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return $errors; |
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} |
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=head2 reset |
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Clean all accumulated errors for this input and remember delimiter templates |
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for L<save_delimiters_templates> |
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$validate->reset; |
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This function B<must> be called after each input to provide accurate statistics. |
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=cut |
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sub reset { |
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my $self = shift; |
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my $log = $self->_get_logger; |
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delete ($self->{errors}); |
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if ( ! $self->{_delimiters_templates} ) { |
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$log->debug("called without _delimiters_templates?"); |
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return; |
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} |
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foreach my $f ( keys %{ $self->{_delimiters_templates} } ) { |
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foreach my $t ( keys %{ $self->{_delimiters_templates}->{$f} } ) { |
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$self->{_accumulated_delimiters_templates}->{$f}->{$t} += |
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$self->{_delimiters_templates}->{$f}->{$t}; |
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} |
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} |
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$log->debug("_accumulated_delimiters_templates = ", sub { dump( $self->{_accumulated_delimiter_templates} ) } ); |
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delete ($self->{_delimiters_templates}); |
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} |
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=head2 all_errors |
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Return hash with all errors |
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print dump( $validate->all_errors ); |
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=cut |
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sub all_errors { |
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my $self = shift; |
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return $self->{errors}; |
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} |
| 350 |
|
|
|
| 351 |
dpavlin |
671 |
=head2 report_error |
| 352 |
dpavlin |
664 |
|
| 353 |
dpavlin |
671 |
Produce nice humanly readable report of single error |
| 354 |
dpavlin |
664 |
|
| 355 |
dpavlin |
671 |
print $validate->report_error( $error_hash ); |
| 356 |
dpavlin |
664 |
|
| 357 |
|
|
=cut |
| 358 |
|
|
|
| 359 |
dpavlin |
671 |
sub report_error { |
| 360 |
dpavlin |
664 |
my $self = shift; |
| 361 |
|
|
|
| 362 |
dpavlin |
671 |
my $h = shift || die "no hash?"; |
| 363 |
|
|
|
| 364 |
|
|
sub _unroll { |
| 365 |
dpavlin |
666 |
my ($self, $tree, $accumulated) = @_; |
| 366 |
dpavlin |
664 |
|
| 367 |
dpavlin |
666 |
my $log = $self->_get_logger(); |
| 368 |
|
|
|
| 369 |
dpavlin |
665 |
$log->debug("# ", |
| 370 |
|
|
( $tree ? "tree: $tree " : '' ), |
| 371 |
|
|
( $accumulated ? "accumulated: $accumulated " : '' ), |
| 372 |
|
|
); |
| 373 |
dpavlin |
664 |
|
| 374 |
dpavlin |
665 |
my $results; |
| 375 |
dpavlin |
664 |
|
| 376 |
dpavlin |
665 |
if (ref($tree) ne 'HASH') { |
| 377 |
|
|
return ("$accumulated\t($tree)", undef); |
| 378 |
dpavlin |
664 |
} |
| 379 |
|
|
|
| 380 |
dpavlin |
665 |
my $dump; |
| 381 |
dpavlin |
664 |
|
| 382 |
dpavlin |
665 |
foreach my $k (sort keys %{ $tree }) { |
| 383 |
|
|
|
| 384 |
dpavlin |
664 |
if ($k eq 'dump') { |
| 385 |
dpavlin |
665 |
$dump = $tree->{dump}; |
| 386 |
dpavlin |
835 |
#warn "## dump ",dump($dump),"\n"; |
| 387 |
dpavlin |
664 |
next; |
| 388 |
|
|
} |
| 389 |
|
|
|
| 390 |
dpavlin |
665 |
$log->debug("current: $k"); |
| 391 |
dpavlin |
664 |
|
| 392 |
dpavlin |
671 |
my ($new_results, $new_dump) = $self->_unroll($tree->{$k}, |
| 393 |
dpavlin |
665 |
$accumulated ? "$accumulated\t$k" : $k |
| 394 |
|
|
); |
| 395 |
|
|
|
| 396 |
dpavlin |
852 |
$log->debug( "new_results: ", sub { dump($new_results) } ) if ( $new_results ); |
| 397 |
dpavlin |
665 |
|
| 398 |
|
|
push @$results, $new_results if ($new_results); |
| 399 |
|
|
$dump = $new_dump if ($new_dump); |
| 400 |
|
|
|
| 401 |
dpavlin |
664 |
} |
| 402 |
dpavlin |
665 |
|
| 403 |
dpavlin |
852 |
$log->debug( "results: ", sub { dump($results) } ) if ( $results ); |
| 404 |
dpavlin |
665 |
|
| 405 |
|
|
if ($#$results == 0) { |
| 406 |
|
|
return ($results->[0], $dump); |
| 407 |
|
|
} else { |
| 408 |
|
|
return ($results, $dump); |
| 409 |
|
|
} |
| 410 |
dpavlin |
664 |
} |
| 411 |
|
|
|
| 412 |
dpavlin |
666 |
|
| 413 |
dpavlin |
671 |
sub _reformat { |
| 414 |
dpavlin |
666 |
my $l = shift; |
| 415 |
|
|
$l =~ s/\t/ /g; |
| 416 |
dpavlin |
835 |
$l =~ s/_/ /g; |
| 417 |
dpavlin |
666 |
return $l; |
| 418 |
|
|
} |
| 419 |
|
|
|
| 420 |
dpavlin |
671 |
my $out = ''; |
| 421 |
dpavlin |
666 |
|
| 422 |
dpavlin |
671 |
for my $f (sort keys %{ $h }) { |
| 423 |
|
|
$out .= "$f: "; |
| 424 |
|
|
|
| 425 |
|
|
my ($r, $d) = $self->_unroll( $h->{$f} ); |
| 426 |
|
|
my $e; |
| 427 |
|
|
if (ref($r) eq 'ARRAY') { |
| 428 |
|
|
$e .= join(", ", map { _reformat( $_ ) } @$r); |
| 429 |
|
|
} else { |
| 430 |
|
|
$e .= _reformat( $r ); |
| 431 |
dpavlin |
666 |
} |
| 432 |
dpavlin |
671 |
$e .= "\n\t$d" if ($d); |
| 433 |
|
|
|
| 434 |
|
|
$out .= $e . "\n"; |
| 435 |
dpavlin |
664 |
} |
| 436 |
dpavlin |
671 |
return $out; |
| 437 |
|
|
} |
| 438 |
dpavlin |
664 |
|
| 439 |
dpavlin |
671 |
|
| 440 |
|
|
=head2 report |
| 441 |
|
|
|
| 442 |
|
|
Produce nice humanly readable report of errors |
| 443 |
|
|
|
| 444 |
|
|
print $validate->report; |
| 445 |
|
|
|
| 446 |
|
|
=cut |
| 447 |
|
|
|
| 448 |
|
|
sub report { |
| 449 |
|
|
my $self = shift; |
| 450 |
|
|
my $e = $self->{errors} || return; |
| 451 |
|
|
|
| 452 |
|
|
my $out; |
| 453 |
|
|
foreach my $mfn (sort { $a <=> $b } keys %$e) { |
| 454 |
|
|
$out .= "MFN $mfn\n" . $self->report_error( $e->{$mfn} ) . "\n"; |
| 455 |
|
|
} |
| 456 |
|
|
|
| 457 |
dpavlin |
664 |
return $out; |
| 458 |
dpavlin |
671 |
|
| 459 |
dpavlin |
664 |
} |
| 460 |
|
|
|
| 461 |
dpavlin |
832 |
=head2 delimiters_templates |
| 462 |
|
|
|
| 463 |
dpavlin |
834 |
Generate report of delimiter tamplates |
| 464 |
dpavlin |
832 |
|
| 465 |
dpavlin |
834 |
my $report = $validate->delimiter_teplates( |
| 466 |
|
|
report => 1, |
| 467 |
dpavlin |
851 |
current_input => 1, |
| 468 |
dpavlin |
834 |
); |
| 469 |
|
|
|
| 470 |
|
|
Options: |
| 471 |
|
|
|
| 472 |
|
|
=over 4 |
| 473 |
|
|
|
| 474 |
|
|
=item report |
| 475 |
|
|
|
| 476 |
|
|
Generate humanly readable report with single fields |
| 477 |
|
|
|
| 478 |
dpavlin |
851 |
=item current_input |
| 479 |
dpavlin |
849 |
|
| 480 |
dpavlin |
851 |
Report just current_input and not accumulated data |
| 481 |
dpavlin |
849 |
|
| 482 |
dpavlin |
834 |
=back |
| 483 |
|
|
|
| 484 |
dpavlin |
832 |
=cut |
| 485 |
|
|
|
| 486 |
|
|
sub delimiters_templates { |
| 487 |
|
|
my $self = shift; |
| 488 |
|
|
|
| 489 |
dpavlin |
834 |
my $args = {@_}; |
| 490 |
|
|
|
| 491 |
dpavlin |
851 |
my $t = $self->{_accumulated_delimiters_templates}; |
| 492 |
|
|
$t = $self->{_delimiters_templates} if ( $args->{current_input} ); |
| 493 |
dpavlin |
832 |
|
| 494 |
|
|
my $log = $self->_get_logger; |
| 495 |
|
|
|
| 496 |
|
|
unless ($t) { |
| 497 |
dpavlin |
834 |
$log->error("called without delimiters"); |
| 498 |
dpavlin |
832 |
return; |
| 499 |
|
|
} |
| 500 |
|
|
|
| 501 |
|
|
my $out; |
| 502 |
|
|
|
| 503 |
|
|
foreach my $f (sort { $a <=> $b } keys %$t) { |
| 504 |
dpavlin |
834 |
$out .= "$f\n" if ( $args->{report} ); |
| 505 |
|
|
foreach my $template (sort { $a cmp $b } keys %{ $t->{$f} }) { |
| 506 |
|
|
my $count = $t->{$f}->{$template}; |
| 507 |
|
|
$out .= |
| 508 |
|
|
( $count ? "" : "# " ) . |
| 509 |
dpavlin |
836 |
( $args->{report} ? "" : "$f" ) . |
| 510 |
dpavlin |
834 |
"\t$count\t$template\n"; |
| 511 |
dpavlin |
832 |
} |
| 512 |
|
|
} |
| 513 |
|
|
|
| 514 |
|
|
return $out; |
| 515 |
|
|
} |
| 516 |
|
|
|
| 517 |
dpavlin |
837 |
=head2 save_delimiters_templates |
| 518 |
|
|
|
| 519 |
dpavlin |
849 |
Save accumulated delimiter templates |
| 520 |
|
|
|
| 521 |
|
|
$validator->save_delimiters_template( '/path/to/validate/delimiters' ); |
| 522 |
|
|
|
| 523 |
dpavlin |
837 |
=cut |
| 524 |
|
|
|
| 525 |
|
|
sub save_delimiters_templates { |
| 526 |
|
|
my $self = shift; |
| 527 |
|
|
|
| 528 |
|
|
my $path = $self->{delimiters_path}; |
| 529 |
|
|
|
| 530 |
|
|
return unless ( $path ); |
| 531 |
|
|
|
| 532 |
|
|
my $log = $self->_get_logger; |
| 533 |
|
|
|
| 534 |
dpavlin |
849 |
if ( ! $self->{_accumulated_delimiters_templates} ) { |
| 535 |
|
|
$log->error('no _accumulated_delimiters_templates found, reset'); |
| 536 |
|
|
$self->reset; |
| 537 |
|
|
} |
| 538 |
|
|
|
| 539 |
|
|
if ( ! $self->{_delimiters_templates} ) { |
| 540 |
|
|
$log->error('found _delimiters_templates, calling reset'); |
| 541 |
|
|
$self->reset; |
| 542 |
|
|
} |
| 543 |
|
|
|
| 544 |
dpavlin |
840 |
$path .= '.new' if ( -e $path ); |
| 545 |
|
|
|
| 546 |
dpavlin |
837 |
open(my $d, '>', $path) || $log->fatal("can't open $path: $!"); |
| 547 |
dpavlin |
851 |
print $d $self->delimiters_templates; |
| 548 |
dpavlin |
837 |
close($d); |
| 549 |
|
|
|
| 550 |
|
|
$log->info("new delimiters templates saved to $path"); |
| 551 |
|
|
} |
| 552 |
|
|
|
| 553 |
dpavlin |
514 |
=head1 AUTHOR |
| 554 |
|
|
|
| 555 |
|
|
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
| 556 |
|
|
|
| 557 |
|
|
=head1 COPYRIGHT & LICENSE |
| 558 |
|
|
|
| 559 |
|
|
Copyright 2006 Dobrica Pavlinusic, All Rights Reserved. |
| 560 |
|
|
|
| 561 |
|
|
This program is free software; you can redistribute it and/or modify it |
| 562 |
|
|
under the same terms as Perl itself. |
| 563 |
|
|
|
| 564 |
|
|
=cut |
| 565 |
|
|
|
| 566 |
|
|
1; # End of WebPAC::Validate |
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