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package WebPAC::Validate; |
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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 blib; |
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|
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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::Dumper; |
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use WebPAC::Normalize qw/_pack_subfields_hash/; |
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use Storable qw/dclone/; |
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|
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=head1 NAME |
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|
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WebPAC::Validate - provide simple validation for records |
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|
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=head1 VERSION |
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|
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Version 0.03 |
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|
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=cut |
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|
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our $VERSION = '0.03'; |
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|
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=head1 SYNOPSIS |
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|
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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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|
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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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|
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=head1 FUNCTIONS |
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|
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=head2 new |
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|
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Create new validation object |
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|
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my $validate = new WebPAC::Validate( |
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path => 'conf/validate/file', |
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); |
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|
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=cut |
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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 $log = $self->_get_logger(); |
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|
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foreach my $p (qw/path/) { |
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$log->logconfess("need $p") unless ($self->{$p}); |
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} |
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|
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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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|
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my $v; |
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my $curr_line = 1; |
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|
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foreach my $l (split(/[\n\r]+/, $v_file)) { |
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$curr_line++; |
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|
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# skip comments and whitespaces |
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next if ($l =~ /^#/ || $l =~ /^\s*$/); |
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|
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$l =~ s/^\s+//; |
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$l =~ s/\s+$//; |
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|
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my @d = split(/\s+/, $l); |
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|
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my $fld = shift @d; |
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|
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if ($fld =~ s/!$//) { |
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$self->{must_exist}->{$fld}++; |
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} |
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|
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$log->logdie("need field name in line $curr_line: $l") unless (defined($fld)); |
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|
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if (@d) { |
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$v->{$fld} = \@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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} |
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|
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$log->debug("current validation rules: ", Dumper($v)); |
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|
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$self->{rules} = $v; |
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|
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$log->info("validation uses rules from $self->{path}"); |
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|
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$self ? return $self : return undef; |
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} |
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|
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=head2 validate_errors |
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|
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Validate record and return errors |
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|
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my @errors = $validate->validate_errors( $rec ); |
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|
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=cut |
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|
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sub validate_errors { |
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my $self = shift; |
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|
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my $log = $self->_get_logger(); |
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|
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my $rec = shift || $log->logdie("validate_errors need record"); |
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|
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$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 = $self->{rules}); |
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|
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my @errors; |
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|
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$log->debug("rec = ", sub { Dumper($rec) }, "keys = ", keys %{ $rec }); |
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|
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my $fields; |
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|
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foreach my $f (keys %{ $rec }) { |
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next if (!defined($f) || $f eq '' || $f eq '000'); |
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$fields->{$f}++; |
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|
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if ( ! defined($r->{$f}) ) { |
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push @errors, "field '$f' shouldn't exists"; |
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next; |
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} |
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|
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|
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if (ref($rec->{$f}) ne 'ARRAY') { |
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push @errors, "field '$f' isn't repetable, probably bug in parsing input data"; |
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next; |
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} |
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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 (ref($v) ne 'HASH') { |
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push @errors, "$f has value without subfields: $v"; |
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next; |
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} else { |
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|
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my $h = dclone( $v ); |
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|
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my $sf_repeatable; |
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|
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delete($v->{subfields}) if (defined($v->{subfields})); |
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|
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foreach my $sf (keys %{ $v }) { |
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|
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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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push @errors, "$f has unknown subfield: $sf"; |
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} |
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} |
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|
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} |
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if (my @r_sf = sort keys( %$sf_repeatable )) { |
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my $plural = $#r_sf > 0 ? 1 : 0; |
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|
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push @errors, "$f subfield" . |
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( $plural ? 's ' : ' ' ) . |
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join(', ', @r_sf) . |
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( $plural ? ' are ' : ' is ' ) . |
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'repeatable in: ' . |
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join('', _pack_subfields_hash( $h, 1) ); |
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} |
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} |
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} elsif (ref($v) eq 'HASH') { |
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push @errors, "$f has subfields which is not valid"; |
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} |
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} |
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} |
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|
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foreach my $must (sort keys %{ $self->{must_exist} }) { |
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next if ($fields->{$must}); |
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push @errors, |
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"field $must should exist, but it doesn't"; |
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} |
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|
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#$log->logcluck("return from this function is ARRAY") unless wantarray; |
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|
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$log->debug("errors: ", join(", ", @errors)) if (@errors); |
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|
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return @errors; |
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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 2006 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::Validate |
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