| 1 |
package WebPAC::Validate; |
| 2 |
|
| 3 |
use warnings; |
| 4 |
use strict; |
| 5 |
|
| 6 |
use blib; |
| 7 |
|
| 8 |
use base 'WebPAC::Common'; |
| 9 |
use File::Slurp; |
| 10 |
use List::Util qw/first/; |
| 11 |
use Data::Dump qw/dump/; |
| 12 |
use WebPAC::Normalize qw/_pack_subfields_hash/; |
| 13 |
use Storable qw/dclone/; |
| 14 |
|
| 15 |
=head1 NAME |
| 16 |
|
| 17 |
WebPAC::Validate - provide simple validation for records |
| 18 |
|
| 19 |
=head1 VERSION |
| 20 |
|
| 21 |
Version 0.08 |
| 22 |
|
| 23 |
=cut |
| 24 |
|
| 25 |
our $VERSION = '0.08'; |
| 26 |
|
| 27 |
=head1 SYNOPSIS |
| 28 |
|
| 29 |
This module provide a simple way to validate your file against a simple |
| 30 |
configuration file in following format: |
| 31 |
|
| 32 |
# field 10 doesn't have any subfields |
| 33 |
10 |
| 34 |
# same with 101 |
| 35 |
101 |
| 36 |
# field 200 have valid subfields a-g |
| 37 |
# and field e is repeatable |
| 38 |
200 a b c d e* f g |
| 39 |
# field 205 can have only subfield a |
| 40 |
# and must exists |
| 41 |
205! a |
| 42 |
# while 210 can have a c or d |
| 43 |
210 a c d |
| 44 |
|
| 45 |
=head1 FUNCTIONS |
| 46 |
|
| 47 |
=head2 new |
| 48 |
|
| 49 |
Create new validation object |
| 50 |
|
| 51 |
my $validate = new WebPAC::Validate( |
| 52 |
path => 'conf/validate/file', |
| 53 |
); |
| 54 |
|
| 55 |
=cut |
| 56 |
|
| 57 |
sub new { |
| 58 |
my $class = shift; |
| 59 |
my $self = {@_}; |
| 60 |
bless($self, $class); |
| 61 |
|
| 62 |
my $log = $self->_get_logger(); |
| 63 |
|
| 64 |
foreach my $p (qw/path/) { |
| 65 |
$log->logconfess("need $p") unless ($self->{$p}); |
| 66 |
} |
| 67 |
|
| 68 |
my $v_file = read_file( $self->{path} ) || |
| 69 |
$log->logdie("can't open validate path $self->{path}: $!"); |
| 70 |
|
| 71 |
my $v; |
| 72 |
my $curr_line = 1; |
| 73 |
|
| 74 |
foreach my $l (split(/[\n\r]+/, $v_file)) { |
| 75 |
$curr_line++; |
| 76 |
|
| 77 |
# skip comments and whitespaces |
| 78 |
next if ($l =~ /^#/ || $l =~ /^\s*$/); |
| 79 |
|
| 80 |
$l =~ s/^\s+//; |
| 81 |
$l =~ s/\s+$//; |
| 82 |
|
| 83 |
my @d = split(/\s+/, $l); |
| 84 |
|
| 85 |
my $fld = shift @d; |
| 86 |
|
| 87 |
if ($fld =~ s/!$//) { |
| 88 |
$self->{must_exist}->{$fld}++; |
| 89 |
} |
| 90 |
|
| 91 |
$log->logdie("need field name in line $curr_line: $l") unless (defined($fld)); |
| 92 |
|
| 93 |
if (@d) { |
| 94 |
$v->{$fld} = [ map { |
| 95 |
my $sf = $_; |
| 96 |
if ( $sf =~ s/!(\*)?$/$1/ ) { |
| 97 |
$self->{must_exist_sf}->{ $fld }->{ $sf }++; |
| 98 |
}; |
| 99 |
$sf; |
| 100 |
} @d ]; |
| 101 |
} else { |
| 102 |
$v->{$fld} = 1; |
| 103 |
} |
| 104 |
|
| 105 |
} |
| 106 |
|
| 107 |
$log->debug("current validation rules: ", dump($v)); |
| 108 |
|
| 109 |
$self->{rules} = $v; |
| 110 |
|
| 111 |
$log->info("validation uses rules from $self->{path}"); |
| 112 |
|
| 113 |
$self ? return $self : return undef; |
| 114 |
} |
| 115 |
|
| 116 |
=head2 validate_errors |
| 117 |
|
| 118 |
Validate record and return errors |
| 119 |
|
| 120 |
my @errors = $validate->validate_errors( $rec, $rec_dump ); |
| 121 |
|
| 122 |
=cut |
| 123 |
|
| 124 |
sub validate_errors { |
| 125 |
my $self = shift; |
| 126 |
|
| 127 |
my $log = $self->_get_logger(); |
| 128 |
|
| 129 |
my $rec = shift || $log->logdie("validate_errors need record"); |
| 130 |
my $rec_dump = shift; |
| 131 |
|
| 132 |
$log->logdie("rec isn't HASH") unless (ref($rec) eq 'HASH'); |
| 133 |
$log->logdie("can't find validation rules") unless (my $r = $self->{rules}); |
| 134 |
|
| 135 |
my $errors; |
| 136 |
|
| 137 |
$log->debug("rec = ", sub { dump($rec) }, "keys = ", keys %{ $rec }); |
| 138 |
|
| 139 |
my $fields; |
| 140 |
|
| 141 |
foreach my $f (keys %{ $rec }) { |
| 142 |
|
| 143 |
next if (!defined($f) || $f eq '' || $f eq '000'); |
| 144 |
|
| 145 |
$fields->{$f}++; |
| 146 |
|
| 147 |
if ( ! defined($r->{$f}) ) { |
| 148 |
$errors->{ $f }->{unexpected} = "this field is not expected"; |
| 149 |
next; |
| 150 |
} |
| 151 |
|
| 152 |
|
| 153 |
if (ref($rec->{$f}) ne 'ARRAY') { |
| 154 |
$errors->{ $f }->{not_repeatable} = "probably bug in parsing input data"; |
| 155 |
next; |
| 156 |
} |
| 157 |
|
| 158 |
foreach my $v (@{ $rec->{$f} }) { |
| 159 |
# can we have subfields? |
| 160 |
if (ref($r->{$f}) eq 'ARRAY') { |
| 161 |
# are values hashes? (has subfields) |
| 162 |
if (! defined($v)) { |
| 163 |
# $errors->{$f}->{empty} = undef; |
| 164 |
# $errors->{dump} = $rec_dump if ($rec_dump); |
| 165 |
} elsif (ref($v) ne 'HASH') { |
| 166 |
$errors->{$f}->{missing_subfield} = join(",", @{ $r->{$f} }) . " required"; |
| 167 |
next; |
| 168 |
} else { |
| 169 |
|
| 170 |
my $h = dclone( $v ); |
| 171 |
|
| 172 |
my $sf_repeatable; |
| 173 |
|
| 174 |
delete($v->{subfields}) if (defined($v->{subfields})); |
| 175 |
|
| 176 |
my $subfields; |
| 177 |
|
| 178 |
foreach my $sf (keys %{ $v }) { |
| 179 |
|
| 180 |
$subfields->{ $sf }++; |
| 181 |
|
| 182 |
# is non-repeatable but with multiple values? |
| 183 |
if ( ! first { $_ eq $sf.'*' } @{$r->{$f}} ) { |
| 184 |
if ( ref($v->{$sf}) eq 'ARRAY' ) { |
| 185 |
$sf_repeatable->{$sf}++; |
| 186 |
}; |
| 187 |
if (! first { $_ eq $sf } @{ $r->{$f} }) { |
| 188 |
$errors->{ $f }->{subfield}->{extra}->{$sf}++; |
| 189 |
} |
| 190 |
} |
| 191 |
|
| 192 |
} |
| 193 |
if (my @r_sf = sort keys( %$sf_repeatable )) { |
| 194 |
|
| 195 |
foreach my $sf (@r_sf) { |
| 196 |
$errors->{$f}->{subfield}->{extra_repeatable}->{$sf}++; |
| 197 |
$errors->{$f}->{dump} = _pack_subfields_hash( $h, 1 ); |
| 198 |
} |
| 199 |
|
| 200 |
} |
| 201 |
|
| 202 |
if ( defined( $self->{must_exist_sf}->{$f} ) ) { |
| 203 |
foreach my $sf (sort keys %{ $self->{must_exist_sf}->{$f} }) { |
| 204 |
#warn "====> $f $sf must exist\n"; |
| 205 |
$errors->{$f}->{subfield}->{missing}->{$sf}++ |
| 206 |
unless defined( $subfields->{$sf} ); |
| 207 |
} |
| 208 |
} |
| 209 |
|
| 210 |
} |
| 211 |
} elsif (ref($v) eq 'HASH') { |
| 212 |
$errors->{$f}->{unexpected_subfields}++; |
| 213 |
$errors->{$f}->{dump} = _pack_subfields_hash( $v, 1 ); |
| 214 |
} |
| 215 |
} |
| 216 |
} |
| 217 |
|
| 218 |
foreach my $must (sort keys %{ $self->{must_exist} }) { |
| 219 |
next if ($fields->{$must}); |
| 220 |
$errors->{$must}->{missing}++; |
| 221 |
$errors->{dump} = $rec_dump if ($rec_dump); |
| 222 |
} |
| 223 |
|
| 224 |
if ($errors) { |
| 225 |
$log->debug("errors: ", $self->report_error( $errors ) ); |
| 226 |
|
| 227 |
my $mfn = $rec->{'000'}->[0] || $log->logconfess("record ", dump( $rec ), " doesn't have MFN"); |
| 228 |
$self->{errors}->{$mfn} = $errors; |
| 229 |
} |
| 230 |
|
| 231 |
#$log->logcluck("return from this function is ARRAY") unless wantarray; |
| 232 |
|
| 233 |
return $errors; |
| 234 |
} |
| 235 |
|
| 236 |
=head2 reset_errors |
| 237 |
|
| 238 |
Clean all accumulated errors for this input |
| 239 |
|
| 240 |
$validate->reset_errors; |
| 241 |
|
| 242 |
=cut |
| 243 |
|
| 244 |
sub reset_errors { |
| 245 |
my $self = shift; |
| 246 |
delete ($self->{errors}); |
| 247 |
} |
| 248 |
|
| 249 |
=head2 all_errors |
| 250 |
|
| 251 |
Return hash with all errors |
| 252 |
|
| 253 |
print dump( $validate->all_errors ); |
| 254 |
|
| 255 |
=cut |
| 256 |
|
| 257 |
sub all_errors { |
| 258 |
my $self = shift; |
| 259 |
return $self->{errors}; |
| 260 |
} |
| 261 |
|
| 262 |
=head2 report_error |
| 263 |
|
| 264 |
Produce nice humanly readable report of single error |
| 265 |
|
| 266 |
print $validate->report_error( $error_hash ); |
| 267 |
|
| 268 |
=cut |
| 269 |
|
| 270 |
sub report_error { |
| 271 |
my $self = shift; |
| 272 |
|
| 273 |
my $h = shift || die "no hash?"; |
| 274 |
|
| 275 |
sub _unroll { |
| 276 |
my ($self, $tree, $accumulated) = @_; |
| 277 |
|
| 278 |
my $log = $self->_get_logger(); |
| 279 |
|
| 280 |
$log->debug("# ", |
| 281 |
( $tree ? "tree: $tree " : '' ), |
| 282 |
( $accumulated ? "accumulated: $accumulated " : '' ), |
| 283 |
); |
| 284 |
|
| 285 |
my $results; |
| 286 |
|
| 287 |
if (ref($tree) ne 'HASH') { |
| 288 |
return ("$accumulated\t($tree)", undef); |
| 289 |
} |
| 290 |
|
| 291 |
my $dump; |
| 292 |
|
| 293 |
foreach my $k (sort keys %{ $tree }) { |
| 294 |
|
| 295 |
if ($k eq 'dump') { |
| 296 |
$dump = $tree->{dump}; |
| 297 |
# warn "## dump: ",dump($dump),"\n"; |
| 298 |
next; |
| 299 |
} |
| 300 |
|
| 301 |
$log->debug("current: $k"); |
| 302 |
|
| 303 |
my ($new_results, $new_dump) = $self->_unroll($tree->{$k}, |
| 304 |
$accumulated ? "$accumulated\t$k" : $k |
| 305 |
); |
| 306 |
|
| 307 |
$log->debug( |
| 308 |
( $new_results ? "new_results: " . dump($new_results) ." " : '' ), |
| 309 |
); |
| 310 |
|
| 311 |
push @$results, $new_results if ($new_results); |
| 312 |
$dump = $new_dump if ($new_dump); |
| 313 |
|
| 314 |
} |
| 315 |
|
| 316 |
$log->debug( |
| 317 |
( $results ? "results: " . dump($results) ." " : '' ), |
| 318 |
); |
| 319 |
|
| 320 |
if ($#$results == 0) { |
| 321 |
return ($results->[0], $dump); |
| 322 |
} else { |
| 323 |
return ($results, $dump); |
| 324 |
} |
| 325 |
} |
| 326 |
|
| 327 |
|
| 328 |
sub _reformat { |
| 329 |
my $l = shift; |
| 330 |
$l =~ s/\t/ /g; |
| 331 |
$l =~ s/_/ /; |
| 332 |
return $l; |
| 333 |
} |
| 334 |
|
| 335 |
my $out = ''; |
| 336 |
|
| 337 |
for my $f (sort keys %{ $h }) { |
| 338 |
$out .= "$f: "; |
| 339 |
|
| 340 |
my ($r, $d) = $self->_unroll( $h->{$f} ); |
| 341 |
my $e; |
| 342 |
if (ref($r) eq 'ARRAY') { |
| 343 |
$e .= join(", ", map { _reformat( $_ ) } @$r); |
| 344 |
} else { |
| 345 |
$e .= _reformat( $r ); |
| 346 |
} |
| 347 |
$e .= "\n\t$d" if ($d); |
| 348 |
|
| 349 |
$out .= $e . "\n"; |
| 350 |
} |
| 351 |
return $out; |
| 352 |
} |
| 353 |
|
| 354 |
|
| 355 |
=head2 report |
| 356 |
|
| 357 |
Produce nice humanly readable report of errors |
| 358 |
|
| 359 |
print $validate->report; |
| 360 |
|
| 361 |
=cut |
| 362 |
|
| 363 |
sub report { |
| 364 |
my $self = shift; |
| 365 |
my $e = $self->{errors} || return; |
| 366 |
|
| 367 |
my $out; |
| 368 |
foreach my $mfn (sort { $a <=> $b } keys %$e) { |
| 369 |
$out .= "MFN $mfn\n" . $self->report_error( $e->{$mfn} ) . "\n"; |
| 370 |
} |
| 371 |
|
| 372 |
return $out; |
| 373 |
|
| 374 |
} |
| 375 |
|
| 376 |
=head1 AUTHOR |
| 377 |
|
| 378 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
| 379 |
|
| 380 |
=head1 COPYRIGHT & LICENSE |
| 381 |
|
| 382 |
Copyright 2006 Dobrica Pavlinusic, All Rights Reserved. |
| 383 |
|
| 384 |
This program is free software; you can redistribute it and/or modify it |
| 385 |
under the same terms as Perl itself. |
| 386 |
|
| 387 |
=cut |
| 388 |
|
| 389 |
1; # End of WebPAC::Validate |
Parent Directory
| 
Revision Log