Commit | Line | Data |
d71100ed |
1 | package Text::Tradition::Analysis; |
2 | |
3 | use strict; |
4 | use warnings; |
428bcf0b |
5 | use Algorithm::Diff; # for word similarity measure |
03c0a7d7 |
6 | use Encode qw/ decode_utf8 encode_utf8 /; |
d1348d38 |
7 | use Exporter 'import'; |
b4cb2d60 |
8 | use Graph; |
a745c3d9 |
9 | use JSON qw/ to_json decode_json /; |
03c0a7d7 |
10 | use LWP::UserAgent; |
7e17346f |
11 | use Set::Scalar; |
7e17346f |
12 | use Text::Tradition::Analysis::Result; |
d71100ed |
13 | use Text::Tradition::Stemma; |
d120c995 |
14 | use TryCatch; |
d71100ed |
15 | |
951ddfe8 |
16 | use vars qw/ @EXPORT_OK $VERSION /; |
a2cf85dd |
17 | @EXPORT_OK = qw/ run_analysis group_variants analyze_variant_location wit_stringify /; |
37bf09f4 |
18 | $VERSION = "1.1"; |
951ddfe8 |
19 | |
d1348d38 |
20 | |
03c0a7d7 |
21 | my $SOLVER_URL = 'http://byzantini.st/cgi-bin/graphcalc.cgi'; |
7e17346f |
22 | my $unsolved_problems = {}; |
5c44c598 |
23 | |
7f52eac8 |
24 | =head1 NAME |
25 | |
26 | Text::Tradition::Analysis - functions for stemma analysis of a tradition |
27 | |
8943ff68 |
28 | =head1 DESCRIPTION |
29 | |
30 | Text::Tradition is a library for representation and analysis of collated |
31 | texts, particularly medieval ones. Where the Collation is the central |
32 | feature of a Tradition, it may also have one or more stemmata associated |
33 | with it, and these stemmata may be analyzed. This package provides the |
34 | following modules: |
35 | |
36 | =over 4 |
37 | |
38 | =item * L<Text::Tradition::HasStemma> - a role that will be composed into |
39 | Text::Tradition objects, providing the ability for Text::Tradition::Stemma |
40 | objects to be associated with them. |
41 | |
42 | =item * L<Text::Tradition::Stemma> - an object class that represents stemma |
43 | hypotheses, both rooted (with a single archetype) and unrooted (e.g. |
44 | phylogenetic trees). |
45 | |
46 | =item * Text::Tradition::Analysis (this package). Provides functions for |
47 | the analysis of a given stemma against the collation within a given |
48 | Tradition. |
49 | |
50 | =back |
51 | |
7f52eac8 |
52 | =head1 SYNOPSIS |
53 | |
54 | use Text::Tradition; |
55 | use Text::Tradition::Analysis qw/ run_analysis analyze_variant_location /; |
56 | my $t = Text::Tradition->new( |
57 | 'name' => 'this is a text', |
58 | 'input' => 'TEI', |
59 | 'file' => '/path/to/tei_parallel_seg_file.xml' ); |
60 | $t->add_stemma( 'dotfile' => $stemmafile ); |
61 | |
62 | my $variant_data = run_analysis( $tradition ); |
7f52eac8 |
63 | |
7f52eac8 |
64 | =head1 SUBROUTINES |
65 | |
88a6bac5 |
66 | =head2 run_analysis( $tradition, %opts ) |
7f52eac8 |
67 | |
88a6bac5 |
68 | Runs the analysis described in analyze_variant_location on every location in the |
69 | collation of the given tradition, with the given options. These include: |
7f52eac8 |
70 | |
88a6bac5 |
71 | =over 4 |
72 | |
73 | =item * stemma_id - Specify which of the tradition's stemmata to use. Default |
74 | is 0 (i.e. the first). |
75 | |
76 | =item * ranks - Specify a list of location ranks to analyze; exclude the rest. |
77 | |
78 | =item * merge_types - Specify a list of relationship types, where related readings |
79 | should be treated as identical for the purposes of analysis. |
80 | |
ffa22d6f |
81 | =item * exclude_type1 - Exclude those ranks whose groupings have only type-1 variants. |
82 | |
88a6bac5 |
83 | =back |
7f52eac8 |
84 | |
85 | =begin testing |
86 | |
87 | use Text::Tradition; |
88 | use Text::Tradition::Analysis qw/ run_analysis analyze_variant_location /; |
89 | |
90 | my $datafile = 't/data/florilegium_tei_ps.xml'; |
91 | my $tradition = Text::Tradition->new( 'input' => 'TEI', |
92 | 'name' => 'test0', |
93 | 'file' => $datafile ); |
94 | my $s = $tradition->add_stemma( 'dotfile' => 't/data/florilegium.dot' ); |
95 | is( ref( $s ), 'Text::Tradition::Stemma', "Added stemma to tradition" ); |
96 | |
f00cefe8 |
97 | my %expected_genealogical = ( |
a44aaf2a |
98 | 1 => 0, |
f00cefe8 |
99 | 2 => 1, |
a44aaf2a |
100 | 3 => 0, |
101 | 5 => 0, |
102 | 7 => 0, |
103 | 8 => 0, |
104 | 10 => 0, |
f00cefe8 |
105 | 13 => 1, |
a44aaf2a |
106 | 33 => 0, |
107 | 34 => 0, |
108 | 37 => 0, |
109 | 60 => 0, |
f00cefe8 |
110 | 81 => 1, |
a44aaf2a |
111 | 84 => 0, |
112 | 87 => 0, |
113 | 101 => 0, |
114 | 102 => 0, |
f00cefe8 |
115 | 122 => 1, |
a44aaf2a |
116 | 157 => 0, |
f00cefe8 |
117 | 166 => 1, |
118 | 169 => 1, |
a44aaf2a |
119 | 200 => 0, |
f00cefe8 |
120 | 216 => 1, |
121 | 217 => 1, |
122 | 219 => 1, |
123 | 241 => 1, |
124 | 242 => 1, |
125 | 243 => 1, |
126 | ); |
127 | |
7e17346f |
128 | my $data = run_analysis( $tradition, calcdsn => 'dbi:SQLite:dbname=t/data/analysis.db' ); |
7234b01d |
129 | my $c = $tradition->collation; |
f00cefe8 |
130 | foreach my $row ( @{$data->{'variants'}} ) { |
a44aaf2a |
131 | # Account for rows that used to be "not useful" |
132 | unless( exists $expected_genealogical{$row->{'id'}} ) { |
133 | $expected_genealogical{$row->{'id'}} = 1; |
134 | } |
18f48b82 |
135 | my $gen_bool = $row->{'genealogical'} ? 1 : 0; |
136 | is( $gen_bool, $expected_genealogical{$row->{'id'}}, |
f00cefe8 |
137 | "Got correct genealogical flag for row " . $row->{'id'} ); |
7234b01d |
138 | # Check that we have the right row with the right groups |
139 | my $rank = $row->{'id'}; |
140 | foreach my $rdghash ( @{$row->{'readings'}} ) { |
141 | # Skip 'readings' that aren't really |
142 | next unless $c->reading( $rdghash->{'readingid'} ); |
143 | # Check the rank |
144 | is( $c->reading( $rdghash->{'readingid'} )->rank, $rank, |
145 | "Got correct reading rank" ); |
146 | # Check the witnesses |
147 | my @realwits = sort $c->reading_witnesses( $rdghash->{'readingid'} ); |
148 | my @sgrp = sort @{$rdghash->{'group'}}; |
149 | is_deeply( \@sgrp, \@realwits, "Reading analyzed with correct groups" ); |
150 | } |
f00cefe8 |
151 | } |
a44aaf2a |
152 | is( $data->{'variant_count'}, 58, "Got right total variant number" ); |
b4cb2d60 |
153 | # TODO Make something meaningful of conflict count, maybe test other bits |
7f52eac8 |
154 | |
155 | =end testing |
156 | |
157 | =cut |
158 | |
d71100ed |
159 | sub run_analysis { |
88a6bac5 |
160 | my( $tradition, %opts ) = @_; |
f00cefe8 |
161 | my $c = $tradition->collation; |
7e17346f |
162 | my $aclabel = $c->ac_label; |
88a6bac5 |
163 | |
164 | my $stemma_id = $opts{'stemma_id'} || 0; |
1d73ecad |
165 | my @ranks = ref( $opts{'ranks'} ) eq 'ARRAY' ? @{$opts{'ranks'}} : (); |
e23225e7 |
166 | my $collapse = Set::Scalar->new(); |
167 | if( $opts{'merge_types'} && ref( $opts{'merge_types'} ) eq 'ARRAY' ) { |
168 | $collapse->insert( @{$opts{'merge_types'}} ); |
169 | } elsif( $opts{'merge_types'} ) { |
170 | $collapse->insert( $opts{'merge_types'} ); |
171 | } |
7e17346f |
172 | |
173 | # Make sure we have a lookup DB for graph calculation results; this will die |
174 | # if calcdir or calcdsn isn't passed. |
03c0a7d7 |
175 | my $dir; |
176 | if( exists $opts{'calcdir'} ) { |
177 | $dir = delete $opts{'calcdir'} |
178 | } elsif ( exists $opts{'calcdsn'} ) { |
8943ff68 |
179 | eval { require Text::Tradition::Directory }; |
180 | if( $@ ) { |
181 | throw( "Could not instantiate a directory for " . $opts{'calcdsn'} |
182 | . ": $@" ); |
183 | } |
03c0a7d7 |
184 | $dir = Text::Tradition::Directory->new( dsn => $opts{'calcdsn'} ); |
185 | } |
88a6bac5 |
186 | |
187 | # Get the stemma |
188 | my $stemma = $tradition->stemma( $stemma_id ); |
b4cb2d60 |
189 | |
4ce27d42 |
190 | # Figure out which witnesses we are working with - that is, the ones that |
191 | # appear both in the stemma and in the tradition. All others are 'lacunose' |
192 | # for our purposes. |
7e17346f |
193 | my $lacunose = Set::Scalar->new( $stemma->hypotheticals ); |
194 | my $stemma_wits = Set::Scalar->new( $stemma->witnesses ); |
195 | my $tradition_wits = Set::Scalar->new( map { $_->sigil } $tradition->witnesses ); |
196 | $lacunose->insert( $stemma_wits->symmetric_difference( $tradition_wits )->members ); |
88a6bac5 |
197 | |
198 | # Find and mark 'common' ranks for exclusion, unless they were |
199 | # explicitly specified. |
200 | unless( @ranks ) { |
201 | my %common_rank; |
a44aaf2a |
202 | foreach my $rdg ( $c->common_readings ) { |
88a6bac5 |
203 | $common_rank{$rdg->rank} = 1; |
204 | } |
205 | @ranks = grep { !$common_rank{$_} } ( 1 .. $c->end->rank-1 ); |
d71100ed |
206 | } |
7f52eac8 |
207 | |
88a6bac5 |
208 | # Group the variants to send to the solver |
209 | my @groups; |
f629cb3b |
210 | my @use_ranks; |
a44aaf2a |
211 | my %lacunae; |
94654e27 |
212 | my $moved = {}; |
88a6bac5 |
213 | foreach my $rank ( @ranks ) { |
7e17346f |
214 | my $missing = $lacunose->clone(); |
e23225e7 |
215 | my $rankgroup = group_variants( $tradition, $rank, $missing, $moved, $collapse ); |
94654e27 |
216 | # Filter out any empty rankgroups |
217 | # (e.g. from the later rank for a transposition) |
218 | next unless keys %$rankgroup; |
7e17346f |
219 | # Get the graph for this rankgroup |
220 | my $rankgraph = _graph_for_grouping( $stemma, $rankgroup, $missing, $aclabel ); |
ffa22d6f |
221 | if( $opts{'exclude_type1'} ) { |
222 | # Check to see whether this is a "useful" group. |
7e17346f |
223 | next unless _useful_variant( $rankgroup, $rankgraph, $aclabel ); |
ffa22d6f |
224 | } |
f629cb3b |
225 | push( @use_ranks, $rank ); |
7e17346f |
226 | push( @groups, { grouping => $rankgroup, graph => $rankgraph } ); |
a44aaf2a |
227 | $lacunae{$rank} = $missing; |
d71100ed |
228 | } |
4ce27d42 |
229 | # Run the solver |
b7bd7aa5 |
230 | my $answer; |
231 | try { |
232 | $answer = solve_variants( $dir, @groups ); |
233 | } catch ( Text::Tradition::Error $e ) { |
234 | if( $e->message =~ /IDP/ ) { |
235 | # Something is wrong with the solver; make the variants table anyway |
236 | $answer->{'variants'} = []; |
237 | map { push( @{$answer->{'variants'}}, _init_unsolved( $_, 'IDP error' ) ) } |
238 | @groups; |
239 | } else { |
240 | # Something else is wrong; error out. |
241 | $e->throw; |
242 | } |
243 | } |
fae07016 |
244 | |
88a6bac5 |
245 | # Do further analysis on the answer |
a44aaf2a |
246 | my $conflict_count = 0; |
7e17346f |
247 | my $reversion_count = 0; |
f629cb3b |
248 | foreach my $idx ( 0 .. $#use_ranks ) { |
88a6bac5 |
249 | my $location = $answer->{'variants'}->[$idx]; |
250 | # Add the rank back in |
94654e27 |
251 | my $rank = $use_ranks[$idx]; |
252 | $location->{'id'} = $rank; |
7234b01d |
253 | # Note what our lacunae are |
f629cb3b |
254 | my %lmiss; |
7234b01d |
255 | map { $lmiss{$_} = 1 } @{$lacunae{$use_ranks[$idx]}}; |
7234b01d |
256 | $location->{'missing'} = [ keys %lmiss ]; |
257 | |
88a6bac5 |
258 | # Run the extra analysis we need. |
428bcf0b |
259 | ## TODO We run through all the variants in this call, so |
260 | ## why not add the reading data there instead of here below? |
7e17346f |
261 | my $graph = $groups[$idx]->{graph}; |
262 | analyze_location( $tradition, $graph, $location, \%lmiss ); |
7234b01d |
263 | |
638e2a95 |
264 | my @layerwits; |
7234b01d |
265 | # Do the final post-analysis tidying up of the data. |
a44aaf2a |
266 | foreach my $rdghash ( @{$location->{'readings'}} ) { |
e23225e7 |
267 | $conflict_count++ if $rdghash->{'is_conflict'}; |
268 | $reversion_count++ if $rdghash->{'is_reverted'}; |
94654e27 |
269 | # Add the reading text back in, setting display value as needed |
a44aaf2a |
270 | my $rdg = $c->reading( $rdghash->{'readingid'} ); |
94654e27 |
271 | if( $rdg ) { |
272 | $rdghash->{'text'} = $rdg->text . |
273 | ( $rdg->rank == $rank ? '' : ' [' . $rdg->rank . ']' ); |
a445ce40 |
274 | if( $rdg->does( 'Text::Tradition::Morphology' ) ) { |
275 | $rdghash->{'is_ungrammatical'} = $rdg->grammar_invalid; |
276 | $rdghash->{'is_nonsense'} = $rdg->is_nonsense; |
277 | } |
94654e27 |
278 | } |
f629cb3b |
279 | # Remove lacunose witnesses from this reading's list now that the |
7234b01d |
280 | # analysis is done |
f629cb3b |
281 | my @realgroup; |
7234b01d |
282 | map { push( @realgroup, $_ ) unless $lmiss{$_} } @{$rdghash->{'group'}}; |
f629cb3b |
283 | $rdghash->{'group'} = \@realgroup; |
638e2a95 |
284 | # Note any layered witnesses that appear in this group |
285 | foreach( @realgroup ) { |
286 | if( $_ =~ /^(.*)\Q$aclabel\E$/ ) { |
287 | push( @layerwits, $1 ); |
288 | } |
289 | } |
a44aaf2a |
290 | } |
638e2a95 |
291 | $location->{'layerwits'} = \@layerwits if @layerwits; |
88a6bac5 |
292 | } |
a44aaf2a |
293 | $answer->{'conflict_count'} = $conflict_count; |
7e17346f |
294 | $answer->{'reversion_count'} = $reversion_count; |
f00cefe8 |
295 | |
88a6bac5 |
296 | return $answer; |
d71100ed |
297 | } |
298 | |
e23225e7 |
299 | =head2 group_variants( $tradition, $rank, $lacunose, $transposed, $merge_relationship_types ) |
7f52eac8 |
300 | |
301 | Groups the variants at the given $rank of the collation, treating any |
e23225e7 |
302 | relationships in the set $merge_relationship_types as equivalent. |
303 | $lacunose should be a reference to an array, to which the sigla of lacunose |
304 | witnesses at this rank will be appended; $transposed should be a reference |
305 | to a hash, wherein the identities of transposed readings and their |
306 | relatives will be stored. |
7f52eac8 |
307 | |
ffa22d6f |
308 | Returns a hash $group_readings where $rdg is attested by the witnesses listed |
309 | in $group_readings->{$rdg}. |
7f52eac8 |
310 | |
311 | =cut |
312 | |
313 | # Return group_readings, groups, lacunose |
d1348d38 |
314 | sub group_variants { |
94654e27 |
315 | my( $tradition, $rank, $lacunose, $transposed, $collapse ) = @_; |
7f52eac8 |
316 | my $c = $tradition->collation; |
335a62ef |
317 | my $aclabel = $c->ac_label; |
d120c995 |
318 | my $table = $c->alignment_table; |
7f52eac8 |
319 | # Get the alignment table readings |
320 | my %readings_at_rank; |
7e17346f |
321 | my $check_for_gaps = Set::Scalar->new(); |
94654e27 |
322 | my %moved_wits; |
d120c995 |
323 | my $has_transposition; |
324 | foreach my $tablewit ( @{$table->{'alignment'}} ) { |
7f52eac8 |
325 | my $rdg = $tablewit->{'tokens'}->[$rank-1]; |
fae07016 |
326 | my $wit = $tablewit->{'witness'}; |
ffa22d6f |
327 | # Exclude the witness if it is "lacunose" which if we got here |
328 | # means "not in the stemma". |
7e17346f |
329 | next if _is_lacunose( $wit, $lacunose, $aclabel ); |
94654e27 |
330 | # Note if the witness is actually in a lacuna |
7f52eac8 |
331 | if( $rdg && $rdg->{'t'}->is_lacuna ) { |
335a62ef |
332 | _add_to_witlist( $wit, $lacunose, $aclabel ); |
94654e27 |
333 | # Otherwise the witness either has a positive reading... |
7f52eac8 |
334 | } elsif( $rdg ) { |
94654e27 |
335 | # If the reading has been counted elsewhere as a transposition, ignore it. |
336 | if( $transposed->{$rdg->{'t'}->id} ) { |
d120c995 |
337 | # TODO Does this cope with three-way transpositions? |
94654e27 |
338 | map { $moved_wits{$_} = 1 } @{$transposed->{$rdg->{'t'}->id}}; |
339 | next; |
340 | } |
341 | # Otherwise, record it... |
342 | $readings_at_rank{$rdg->{'t'}->id} = $rdg->{'t'}; |
343 | # ...and grab any transpositions, and their relations. |
ee26c4d9 |
344 | my @transp = grep { $_->rank != $rank } _all_related( $rdg->{'t'} ); |
94654e27 |
345 | foreach my $trdg ( @transp ) { |
d120c995 |
346 | next if exists $readings_at_rank{$trdg->id}; |
347 | $has_transposition = 1; |
348 | my @affected_wits = _table_witnesses( |
7e17346f |
349 | $table, $trdg, $lacunose, $aclabel ); |
d120c995 |
350 | next unless @affected_wits; |
351 | map { $moved_wits{$_} = 1 } @affected_wits; |
352 | $transposed->{$trdg->id} = |
7e17346f |
353 | [ _table_witnesses( $table, $rdg->{'t'}, $lacunose, $aclabel ) ]; |
94654e27 |
354 | $readings_at_rank{$trdg->id} = $trdg; |
355 | } |
356 | # ...or it is empty, ergo a gap. |
7f52eac8 |
357 | } else { |
7e17346f |
358 | _add_to_witlist( $wit, $check_for_gaps, $aclabel ); |
7f52eac8 |
359 | } |
360 | } |
7e17346f |
361 | my $gap_wits = Set::Scalar->new(); |
362 | map { _add_to_witlist( $_, $gap_wits, $aclabel ) |
363 | unless $moved_wits{$_} } $check_for_gaps->members; |
364 | |
365 | # Group the readings, collapsing groups by relationship if needed. |
d120c995 |
366 | my $grouped_readings = {}; |
4ce27d42 |
367 | foreach my $rdg ( values %readings_at_rank ) { |
7f52eac8 |
368 | # Skip readings that have been collapsed into others. |
d120c995 |
369 | next if exists $grouped_readings->{$rdg->id} |
370 | && $grouped_readings->{$rdg->id} eq 'COLLAPSE'; |
4ce27d42 |
371 | # Get the witness list, including from readings collapsed into this one. |
7e17346f |
372 | my @wits = _table_witnesses( $table, $rdg, $lacunose, $aclabel ); |
e23225e7 |
373 | if( $collapse && $collapse->size ) { |
374 | my $filter = sub { $collapse->has( $_[0]->type ) }; |
7f52eac8 |
375 | foreach my $other ( $rdg->related_readings( $filter ) ) { |
7e17346f |
376 | my @otherwits = _table_witnesses( $table, $other, $lacunose, $aclabel ); |
fae07016 |
377 | push( @wits, @otherwits ); |
d120c995 |
378 | $grouped_readings->{$other->id} = 'COLLAPSE'; |
d1348d38 |
379 | } |
380 | } |
7e17346f |
381 | $grouped_readings->{$rdg->id} = Set::Scalar->new( @wits ); |
7f52eac8 |
382 | } |
7e17346f |
383 | if( $gap_wits->members ) { |
384 | $grouped_readings->{'(omitted)'} = $gap_wits; |
385 | } |
386 | |
7f52eac8 |
387 | # Get rid of our collapsed readings |
7e17346f |
388 | map { delete $grouped_readings->{$_} if( |
389 | $grouped_readings->{$_} eq 'COLLAPSE' |
390 | || $grouped_readings->{$_}->is_empty ) } |
391 | keys %$grouped_readings; |
d120c995 |
392 | |
393 | # If something was transposed, check the groups for doubled-up readings |
394 | if( $has_transposition ) { |
62a39b8f |
395 | # print STDERR "Group for rank $rank:\n"; |
396 | # map { print STDERR "\t$_: " . join( ' ' , @{$grouped_readings->{$_}} ) . "\n" } |
397 | # keys %$grouped_readings; |
d120c995 |
398 | _check_transposed_consistency( $c, $rank, $transposed, $grouped_readings ); |
399 | } |
7f52eac8 |
400 | |
4ce27d42 |
401 | # Return the result |
d120c995 |
402 | return $grouped_readings; |
403 | } |
404 | |
ee26c4d9 |
405 | sub _all_related { |
406 | my $rdg = shift; |
407 | my $c = $rdg->collation; |
408 | my @all = map { $c->reading( $_ ) } $c->relations->graph->all_neighbors( $rdg ); |
409 | return @all; |
410 | } |
411 | |
412 | |
d120c995 |
413 | # Helper function to query the alignment table for all witnesses (a.c. included) |
414 | # that have a given reading at its rank. |
415 | sub _table_witnesses { |
416 | my( $table, $trdg, $lacunose, $aclabel ) = @_; |
417 | my $tableidx = $trdg->rank - 1; |
7e17346f |
418 | my $has_reading = Set::Scalar->new(); |
d120c995 |
419 | foreach my $row ( @{$table->{'alignment'}} ) { |
420 | my $wit = $row->{'witness'}; |
7e17346f |
421 | next if _is_lacunose( $wit, $lacunose, $aclabel ); |
d120c995 |
422 | my $rdg = $row->{'tokens'}->[$tableidx]; |
423 | next unless exists $rdg->{'t'} && defined $rdg->{'t'}; |
7e17346f |
424 | _add_to_witlist( $wit, $has_reading, $aclabel ) |
d120c995 |
425 | if $rdg->{'t'}->id eq $trdg->id; |
426 | } |
7e17346f |
427 | return $has_reading->members; |
428 | } |
429 | |
430 | # Helper function to see if a witness is lacunose even if we are asking about |
431 | # the a.c. version |
432 | sub _is_lacunose { |
433 | my ( $wit, $lac, $acstr ) = @_; |
434 | if( $wit =~ /^(.*)\Q$acstr\E$/ ) { |
435 | $wit = $1; |
436 | } |
437 | return $lac->has( $wit ); |
d1348d38 |
438 | } |
439 | |
335a62ef |
440 | # Helper function to ensure that X and X a.c. never appear in the same list. |
441 | sub _add_to_witlist { |
442 | my( $wit, $list, $acstr ) = @_; |
335a62ef |
443 | if( $wit =~ /^(.*)\Q$acstr\E$/ ) { |
7e17346f |
444 | # Don't add X a.c. if we already have X |
445 | return if $list->has( $1 ); |
335a62ef |
446 | } else { |
7e17346f |
447 | # Delete X a.c. if we are about to add X |
448 | $list->delete( $wit.$acstr ); |
335a62ef |
449 | } |
7e17346f |
450 | $list->insert( $wit ); |
335a62ef |
451 | } |
452 | |
d120c995 |
453 | sub _check_transposed_consistency { |
454 | my( $c, $rank, $transposed, $groupings ) = @_; |
455 | my %seen_wits; |
456 | my %thisrank; |
457 | # Note which readings are actually at this rank, and which witnesses |
458 | # belong to which reading. |
459 | foreach my $rdg ( keys %$groupings ) { |
460 | my $rdgobj = $c->reading( $rdg ); |
461 | # Count '(omitted)' as a reading at this rank |
462 | $thisrank{$rdg} = 1 if !$rdgobj || $rdgobj->rank == $rank; |
463 | map { push( @{$seen_wits{$_}}, $rdg ) } @{$groupings->{$rdg}}; |
464 | } |
465 | # Our work is done if we have no witness belonging to more than one |
466 | # reading. |
467 | my @doubled = grep { scalar @{$seen_wits{$_}} > 1 } keys %seen_wits; |
468 | return unless @doubled; |
469 | # If we have a symmetric related transposition, drop the non-rank readings. |
470 | if( @doubled == scalar keys %seen_wits ) { |
471 | foreach my $rdg ( keys %$groupings ) { |
472 | if( !$thisrank{$rdg} ) { |
473 | my $groupstr = wit_stringify( $groupings->{$rdg} ); |
474 | my ( $matched ) = grep { $groupstr eq wit_stringify( $groupings->{$_} ) } |
475 | keys %thisrank; |
476 | delete $groupings->{$rdg}; |
477 | # If we found a group match, assume there is a symmetry happening. |
478 | # TODO think more about this |
62a39b8f |
479 | # print STDERR "*** Deleting symmetric reading $rdg\n"; |
d120c995 |
480 | unless( $matched ) { |
481 | delete $transposed->{$rdg}; |
482 | warn "Found problem in evident symmetry with reading $rdg"; |
483 | } |
484 | } |
485 | } |
486 | # Otherwise 'unhook' the transposed reading(s) that have duplicates. |
487 | } else { |
488 | foreach my $dup ( @doubled ) { |
489 | foreach my $rdg ( @{$seen_wits{$dup}} ) { |
490 | next if $thisrank{$rdg}; |
491 | next unless exists $groupings->{$rdg}; |
62a39b8f |
492 | # print STDERR "*** Deleting asymmetric doubled-up reading $rdg\n"; |
d120c995 |
493 | delete $groupings->{$rdg}; |
494 | delete $transposed->{$rdg}; |
495 | } |
496 | } |
497 | # and put any now-orphaned readings into an 'omitted' reading. |
498 | foreach my $wit ( keys %seen_wits ) { |
499 | unless( grep { exists $groupings->{$_} } @{$seen_wits{$wit}} ) { |
7e17346f |
500 | $groupings->{'(omitted)'} = Set::Scalar->new() |
501 | unless exists $groupings->{'(omitted)'}; |
d120c995 |
502 | _add_to_witlist( $wit, $groupings->{'(omitted)'}, $c->ac_label ); |
503 | } |
504 | } |
505 | } |
506 | } |
507 | |
7e17346f |
508 | # For the given grouping, return its situation graph based on the stemma. |
509 | sub _graph_for_grouping { |
510 | my( $stemma, $grouping, $lacunose, $aclabel ) = @_; |
511 | my $acwits = []; |
512 | my $extant = {}; |
513 | foreach my $gs ( values %$grouping ) { |
514 | map { |
515 | if( $_ =~ /^(.*)\Q$aclabel\E$/ ) { |
516 | push( @$acwits, $1 ) unless $lacunose->has( $1 ); |
517 | } else { |
518 | $extant->{$_} = 1 unless $lacunose->has( $_ ); |
519 | } |
520 | } $gs->members; |
521 | } |
522 | my $graph; |
523 | try { |
524 | # contig contains all extant wits and all hypothetical wits |
525 | # needed to make up the groups. |
ace5fce5 |
526 | $graph = $stemma->situation_graph( $extant, $acwits, $aclabel ); |
7e17346f |
527 | } catch ( Text::Tradition::Error $e ) { |
ee26c4d9 |
528 | $DB::single = 1; |
03c0a7d7 |
529 | throw( "Could not extend graph with given extant and a.c. witnesses: " |
530 | . $e->message ); |
7e17346f |
531 | } catch { |
03c0a7d7 |
532 | throw( "Could not extend graph with a.c. witnesses @$acwits" ); |
7e17346f |
533 | } |
534 | return $graph; |
535 | } |
88a6bac5 |
536 | |
7e17346f |
537 | =head2 solve_variants( $calcdir, @groups ) |
538 | |
539 | Looks up the set of groups in the answers provided by the external graph solver |
540 | service and returns a cleaned-up answer, adding the rank IDs back where they belong. |
88a6bac5 |
541 | |
88a6bac5 |
542 | The answer has the form |
543 | { "variants" => [ array of variant location structures ], |
544 | "variant_count" => total, |
545 | "conflict_count" => number of conflicts detected, |
546 | "genealogical_count" => number of solutions found } |
547 | |
548 | =cut |
549 | |
550 | sub solve_variants { |
03c0a7d7 |
551 | my( @groups ) = @_; |
552 | |
a745c3d9 |
553 | # Are we using a local result directory, or did we pass an empty value |
554 | # for the directory? |
03c0a7d7 |
555 | my $dir; |
a745c3d9 |
556 | unless( ref( $groups[0] ) eq 'HASH' ) { |
03c0a7d7 |
557 | $dir = shift @groups; |
558 | } |
335a62ef |
559 | |
03c0a7d7 |
560 | ## For each graph/group combo, make a Text::Tradition::Analysis::Result |
561 | ## object so that we can send it off for IDP lookup. |
7e17346f |
562 | my $variants = []; |
563 | my $genealogical = 0; # counter |
03c0a7d7 |
564 | # TODO Optimize for unique graph problems |
554e2e7d |
565 | my %problems; |
7e17346f |
566 | foreach my $graphproblem ( @groups ) { |
03c0a7d7 |
567 | # Construct the calc result key and look up its answer |
568 | my $problem = Text::Tradition::Analysis::Result->new( |
569 | graph => $graphproblem->{'graph'}, |
570 | setlist => [ values %{$graphproblem->{'grouping'}} ] ); |
554e2e7d |
571 | if( exists $problems{$problem->object_key} ) { |
572 | $problem = $problems{$problem->object_key}; |
573 | } else { |
574 | $problems{$problem->object_key} = $problem; |
575 | } |
576 | $graphproblem->{'object'} = $problem; |
03c0a7d7 |
577 | } |
578 | |
554e2e7d |
579 | my %results; |
03c0a7d7 |
580 | if( $dir ) { |
581 | my $scope = $dir->new_scope; |
554e2e7d |
582 | map { $results{$_} = $dir->lookup( $_ ) || $problems{$_} } keys %problems; |
583 | } else { |
584 | my $json = JSON->new->allow_blessed->convert_blessed->utf8->encode( |
585 | [ values %problems ] ); |
03c0a7d7 |
586 | # Send it off and get the result |
587 | # print STDERR "Sending request: " . decode_utf8( $json ) . "\n"; |
588 | my $ua = LWP::UserAgent->new(); |
589 | my $resp = $ua->post( $SOLVER_URL, 'Content-Type' => 'application/json', |
590 | 'Content' => $json ); |
a745c3d9 |
591 | my $answer; |
03c0a7d7 |
592 | if( $resp->is_success ) { |
a745c3d9 |
593 | $answer = decode_json( $resp->content ); |
03c0a7d7 |
594 | throw( "Unexpected answer from IDP: $answer" ) unless ref( $answer ) eq 'ARRAY'; |
595 | } else { |
596 | throw( "IDP solver returned " . $resp->status_line . " / " . $resp->content |
597 | . "; cannot run graph analysis" ); |
598 | } |
599 | # One more sanity check |
600 | throw( "Something went wrong with answer symmetricity" ) |
554e2e7d |
601 | unless keys( %problems ) == @$answer; |
03c0a7d7 |
602 | # Convert the results |
554e2e7d |
603 | foreach my $a ( @$answer ) { |
604 | my $r = Text::Tradition::Analysis::Result->new( $a ); |
605 | $results{$r->object_key} = $r; |
606 | } |
03c0a7d7 |
607 | } |
608 | |
609 | # We now have a single JSON-encoded Result object per problem sent. Fold its |
610 | # answers into our variant info structure. |
554e2e7d |
611 | foreach my $graphproblem ( @groups ) { |
612 | my $result = $results{$graphproblem->{'object'}->object_key} |
613 | || $graphproblem->{'object'}; |
03c0a7d7 |
614 | |
7e17346f |
615 | # Initialize the result structure for this graph problem |
b7bd7aa5 |
616 | my $vstruct; |
617 | if( $result->status eq 'OK' ) { |
618 | $vstruct = { readings => [] }; |
619 | push( @$variants, $vstruct ); |
620 | } else { |
621 | push( @$variants, _init_unsolved( $graphproblem, $result->status ) ); |
7e17346f |
622 | next; |
5c44c598 |
623 | } |
b7bd7aa5 |
624 | |
7e17346f |
625 | # 1. Did the group evaluate as genealogical? |
03c0a7d7 |
626 | $vstruct->{genealogical} = $result->is_genealogical; |
627 | $genealogical++ if $result->is_genealogical; |
7e17346f |
628 | |
629 | # 2. What are the calculated minimum groupings for each variant loc? |
630 | foreach my $rid ( keys %{$graphproblem->{grouping}} ) { |
631 | my $inputset = $graphproblem->{grouping}->{$rid}; |
03c0a7d7 |
632 | my $minset = $result->minimum_grouping_for( $inputset ); |
7e17346f |
633 | push( @{$vstruct->{readings}}, { readingid => $rid, group => $minset } ); |
6d25a3a0 |
634 | } |
7e17346f |
635 | |
636 | # 3. What are the sources and classes calculated for each witness? |
03c0a7d7 |
637 | $vstruct->{witcopy_types} = { $result->classes }; |
7e17346f |
638 | $vstruct->{reading_roots} = {}; |
03c0a7d7 |
639 | map { $vstruct->{reading_roots}->{$_} = 1 } $result->sources; |
7e17346f |
640 | |
88a6bac5 |
641 | } |
642 | |
643 | return { 'variants' => $variants, |
644 | 'variant_count' => scalar @$variants, |
645 | 'genealogical_count' => $genealogical }; |
646 | } |
647 | |
b7bd7aa5 |
648 | sub _init_unsolved { |
649 | my( $graphproblem, $status ) = @_; |
650 | my $vstruct = { 'readings' => [] }; |
651 | $vstruct->{'unsolved'} = $status; |
652 | foreach my $rid ( keys %{$graphproblem->{grouping}} ) { |
653 | push( @{$vstruct->{readings}}, { readingid => $rid, |
654 | group => [ $graphproblem->{grouping}->{$rid}->members ] } ); |
655 | } |
656 | return $vstruct; |
657 | } |
658 | |
fae07016 |
659 | =head2 analyze_location ( $tradition, $graph, $location_hash ) |
7f52eac8 |
660 | |
fae07016 |
661 | Given the tradition, its stemma graph, and the solution from the graph solver, |
662 | work out the rest of the information we want. For each reading we need missing, |
5c44c598 |
663 | conflict, reading_parents, independent_occurrence, followed, not_followed, |
664 | and follow_unknown. Alters the location_hash in place. |
7f52eac8 |
665 | |
666 | =cut |
732152b1 |
667 | |
fae07016 |
668 | sub analyze_location { |
7e17346f |
669 | my ( $tradition, $graph, $variant_row, $lacunose ) = @_; |
94654e27 |
670 | my $c = $tradition->collation; |
fae07016 |
671 | |
03c0a7d7 |
672 | if( exists $variant_row->{'unsolved'} ) { |
673 | return; |
674 | } |
675 | my $reading_roots = delete $variant_row->{'reading_roots'}; |
676 | my $classinfo = delete $variant_row->{'witcopy_types'}; |
677 | |
fae07016 |
678 | # Make a hash of all known node memberships, and make the subgraphs. |
679 | my $contig = {}; |
fae07016 |
680 | my $subgraph = {}; |
638e2a95 |
681 | my $acstr = $c->ac_label; |
682 | my @acwits; |
5c44c598 |
683 | |
5c44c598 |
684 | # Note which witnesses positively belong to which group. This information |
685 | # comes ultimately from the IDP solver. |
686 | # Also make a note of the reading's roots. |
fae07016 |
687 | foreach my $rdghash ( @{$variant_row->{'readings'}} ) { |
688 | my $rid = $rdghash->{'readingid'}; |
5c44c598 |
689 | my @roots; |
638e2a95 |
690 | foreach my $wit ( @{$rdghash->{'group'}} ) { |
691 | $contig->{$wit} = $rid; |
692 | if( $wit =~ /^(.*)\Q$acstr\E$/ ) { |
693 | push( @acwits, $1 ); |
694 | } |
5c44c598 |
695 | if( exists $reading_roots->{$wit} && $reading_roots->{$wit} ) { |
696 | push( @roots, $wit ); |
697 | } |
638e2a95 |
698 | } |
5c44c598 |
699 | $rdghash->{'independent_occurrence'} = \@roots; |
94654e27 |
700 | } |
7e17346f |
701 | |
fae07016 |
702 | # Now that we have all the node group memberships, calculate followed/ |
bebec0e9 |
703 | # non-followed/unknown values for each reading. Also figure out the |
704 | # reading's evident parent(s). |
705 | foreach my $rdghash ( @{$variant_row->{'readings'}} ) { |
fae07016 |
706 | my $rid = $rdghash->{'readingid'}; |
428bcf0b |
707 | my $rdg = $c->reading( $rid ); |
5c44c598 |
708 | my @roots = @{$rdghash->{'independent_occurrence'}}; |
7e17346f |
709 | my @reversions; |
710 | if( $classinfo ) { |
711 | @reversions = grep { $classinfo->{$_} eq 'revert' } |
712 | $rdghash->{'group'}->members; |
be590045 |
713 | $rdghash->{'reversions'} = \@reversions; |
7e17346f |
714 | } |
5c44c598 |
715 | my @group = @{$rdghash->{'group'}}; |
fae07016 |
716 | |
717 | # Start figuring things out. |
7e17346f |
718 | $rdghash->{'followed'} = scalar( @group ) |
719 | - ( scalar( @roots ) + scalar( @reversions ) ); |
bebec0e9 |
720 | # Find the parent readings, if any, of this reading. |
7e17346f |
721 | my $sourceparents = _find_reading_parents( $rid, $graph, $contig, @roots ); |
7e17346f |
722 | # Work out relationships between readings and their non-followed parent. |
723 | _resolve_parent_relationships( $c, $rid, $rdg, $sourceparents ); |
be590045 |
724 | $rdghash->{'source_parents'} = $sourceparents; |
e23225e7 |
725 | |
726 | if( @reversions ) { |
727 | my $revparents = _find_reading_parents( $rid, $graph, $contig, @reversions ); |
728 | _resolve_parent_relationships( $c, $rid, $rdg, $revparents ); |
729 | $rdghash->{'reversion_parents'} = $revparents; |
730 | } |
bebec0e9 |
731 | |
732 | # Find the number of times this reading was altered, and the number of |
733 | # times we're not sure. |
734 | my( %nofollow, %unknownfollow ); |
5c44c598 |
735 | foreach my $wit ( @{$rdghash->{'group'}} ) { |
bebec0e9 |
736 | foreach my $wchild ( $graph->successors( $wit ) ) { |
5c44c598 |
737 | if( $reading_roots->{$wchild} && $contig->{$wchild} |
738 | && $contig->{$wchild} ne $rid ) { |
bebec0e9 |
739 | # It definitely changed here. |
740 | $nofollow{$wchild} = 1; |
741 | } elsif( !($contig->{$wchild}) ) { |
742 | # The child is a hypothetical node not definitely in |
743 | # any group. Answer is unknown. |
744 | $unknownfollow{$wchild} = 1; |
5c44c598 |
745 | } # else it is either in our group, or it is a non-root node in a |
746 | # known group and therefore is presumed to have its reading from |
747 | # its group, not this link. |
bebec0e9 |
748 | } |
749 | } |
750 | $rdghash->{'not_followed'} = keys %nofollow; |
751 | $rdghash->{'follow_unknown'} = keys %unknownfollow; |
fae07016 |
752 | |
753 | # Now say whether this reading represents a conflict. |
754 | unless( $variant_row->{'genealogical'} ) { |
7e17346f |
755 | $rdghash->{'is_conflict'} = @roots != 1; |
e23225e7 |
756 | $rdghash->{'is_reverted'} = scalar @reversions; |
7e17346f |
757 | } |
758 | } |
759 | } |
760 | |
761 | sub _find_reading_parents { |
762 | my( $rid, $graph, $contig, @list ) = @_; |
763 | my $parenthash = {}; |
764 | foreach my $wit ( @list ) { |
765 | # Look in the stemma graph to find this witness's extant or known-reading |
766 | # immediate ancestor(s), and look up the reading that each ancestor holds. |
767 | my @check = $graph->predecessors( $wit ); |
768 | while( @check ) { |
769 | my @next; |
770 | foreach my $wparent( @check ) { |
771 | my $preading = $contig->{$wparent}; |
772 | if( $preading && $preading ne $rid ) { |
773 | $parenthash->{$preading} = 1; |
774 | } else { |
775 | push( @next, $graph->predecessors( $wparent ) ); |
776 | } |
777 | } |
778 | @check = @next; |
779 | } |
780 | } |
781 | return $parenthash; |
782 | } |
783 | |
784 | sub _resolve_parent_relationships { |
785 | my( $c, $rid, $rdg, $rdgparents ) = @_; |
786 | foreach my $p ( keys %$rdgparents ) { |
787 | # Resolve the relationship of the parent to the reading, and |
788 | # save it in our hash. |
789 | my $pobj = $c->reading( $p ); |
790 | my $prep = $pobj ? $pobj->id . ' (' . $pobj->text . ')' : $p; |
791 | my $phash = { 'label' => $prep }; |
792 | if( $pobj ) { |
793 | my $rel = $c->get_relationship( $p, $rid ); |
794 | if( $rel ) { |
795 | _add_to_hash( $rel, $phash ); |
796 | } elsif( $rdg ) { |
797 | # First check for a transposed relationship |
798 | if( $rdg->rank != $pobj->rank ) { |
799 | foreach my $ti ( $rdg->related_readings( 'transposition' ) ) { |
800 | next unless $ti->text eq $rdg->text; |
801 | $rel = $c->get_relationship( $ti, $pobj ); |
802 | if( $rel ) { |
803 | _add_to_hash( $rel, $phash, 1 ); |
804 | last; |
805 | } |
806 | } |
807 | unless( $rel ) { |
808 | foreach my $ti ( $pobj->related_readings( 'transposition' ) ) { |
809 | next unless $ti->text eq $pobj->text; |
810 | $rel = $c->get_relationship( $ti, $rdg ); |
811 | if( $rel ) { |
812 | _add_to_hash( $rel, $phash, 1 ); |
813 | last; |
814 | } |
815 | } |
5c44c598 |
816 | } |
817 | } |
7e17346f |
818 | unless( $rel ) { |
819 | # and then check for sheer word similarity. |
820 | my $rtext = $rdg->text; |
821 | my $ptext = $pobj->text; |
822 | if( similar( $rtext, $ptext ) ) { |
823 | # say STDERR "Words $rtext and $ptext judged similar"; |
824 | $phash->{relation} = { type => 'wordsimilar' }; |
825 | } |
826 | } |
5c44c598 |
827 | } else { |
7e17346f |
828 | $phash->{relation} = { type => 'deletion' }; |
5c44c598 |
829 | } |
7e17346f |
830 | # Get the attributes of the parent object while we are here |
831 | $phash->{'text'} = $pobj->text if $pobj; |
a445ce40 |
832 | if( $pobj && $pobj->does('Text::Tradition::Morphology') ) { |
833 | $phash->{'is_nonsense'} = $pobj->is_nonsense; |
834 | $phash->{'is_ungrammatical'} = $pobj->grammar_invalid; |
835 | } |
7e17346f |
836 | } elsif( $p eq '(omitted)' ) { |
ee26c4d9 |
837 | # Check to see if the reading in question is a repetition. |
838 | my @reps = $rdg->related_readings( 'repetition' ); |
839 | if( @reps ) { |
840 | $phash->{relation} = { type => 'repetition', |
841 | annotation => "of reading @reps" }; |
842 | } else { |
843 | $phash->{relation} = { type => 'addition' }; |
844 | } |
7e17346f |
845 | } |
846 | # Save it |
847 | $rdgparents->{$p} = $phash; |
848 | } |
d71100ed |
849 | } |
850 | |
428bcf0b |
851 | sub _add_to_hash { |
852 | my( $rel, $phash, $is_transposed ) = @_; |
853 | $phash->{relation} = { type => $rel->type }; |
854 | $phash->{relation}->{transposed} = 1 if $is_transposed; |
855 | $phash->{relation}->{annotation} = $rel->annotation |
856 | if $rel->has_annotation; |
857 | } |
858 | |
859 | =head2 similar( $word1, $word2 ) |
860 | |
861 | Use Algorithm::Diff to get a sense of how close the words are to each other. |
862 | This will hopefully handle substitutions a bit more nicely than Levenshtein. |
863 | |
864 | =cut |
865 | |
866 | #!/usr/bin/env perl |
867 | |
868 | sub similar { |
869 | my( $word1, $word2 ) = sort { length($a) <=> length($b) } @_; |
870 | my @let1 = split( '', lc( $word1 ) ); |
871 | my @let2 = split( '', lc( $word2 ) ); |
872 | my $diff = Algorithm::Diff->new( \@let1, \@let2 ); |
873 | my $mag = 0; |
874 | while( $diff->Next ) { |
875 | if( $diff->Same ) { |
876 | # Take off points for longer strings |
877 | my $cs = $diff->Range(1) - 2; |
878 | $cs = 0 if $cs < 0; |
879 | $mag -= $cs; |
880 | } elsif( !$diff->Items(1) ) { |
881 | $mag += $diff->Range(2); |
882 | } elsif( !$diff->Items(2) ) { |
883 | $mag += $diff->Range(1); |
884 | } else { |
885 | # Split the difference for substitutions |
886 | my $c1 = $diff->Range(1) || 1; |
887 | my $c2 = $diff->Range(2) || 1; |
888 | my $cd = ( $c1 + $c2 ) / 2; |
889 | $mag += $cd; |
890 | } |
891 | } |
892 | return ( $mag <= length( $word1 ) / 2 ); |
893 | } |
894 | |
5be0cdeb |
895 | sub _useful_variant { |
7e17346f |
896 | my( $rankgroup, $rankgraph, $acstr ) = @_; |
5be0cdeb |
897 | |
898 | # Sort by group size and return |
899 | my $is_useful = 0; |
7e17346f |
900 | foreach my $rdg ( keys %$rankgroup ) { |
901 | my @wits = $rankgroup->{$rdg}->members; |
902 | if( @wits > 1 ) { |
5be0cdeb |
903 | $is_useful++; |
904 | } else { |
7e17346f |
905 | $is_useful++ unless( $rankgraph->is_sink_vertex( $wits[0] ) |
906 | || $wits[0] =~ /\Q$acstr\E$/ ); |
5be0cdeb |
907 | } |
908 | } |
7e17346f |
909 | return $is_useful > 1; |
5be0cdeb |
910 | } |
911 | |
7f52eac8 |
912 | =head2 wit_stringify( $groups ) |
913 | |
914 | Takes an array of witness groupings and produces a string like |
915 | ['A','B'] / ['C','D','E'] / ['F'] |
d71100ed |
916 | |
7f52eac8 |
917 | =cut |
d71100ed |
918 | |
919 | sub wit_stringify { |
920 | my $groups = shift; |
921 | my @gst; |
922 | # If we were passed an array of witnesses instead of an array of |
923 | # groupings, then "group" the witnesses first. |
924 | unless( ref( $groups->[0] ) ) { |
925 | my $mkgrp = [ $groups ]; |
926 | $groups = $mkgrp; |
927 | } |
928 | foreach my $g ( @$groups ) { |
929 | push( @gst, '[' . join( ',', map { "'$_'" } @$g ) . ']' ); |
930 | } |
931 | return join( ' / ', @gst ); |
932 | } |
7f52eac8 |
933 | |
7f52eac8 |
934 | 1; |
935 | |
a745c3d9 |
936 | sub throw { |
937 | Text::Tradition::Error->throw( |
938 | 'ident' => 'Analysis error', |
939 | 'message' => $_[0], |
940 | ); |
941 | } |
942 | |
7f52eac8 |
943 | =head1 LICENSE |
944 | |
945 | This package is free software and is provided "as is" without express |
946 | or implied warranty. You can redistribute it and/or modify it under |
947 | the same terms as Perl itself. |
948 | |
949 | =head1 AUTHOR |
950 | |
951 | Tara L Andrews E<lt>aurum@cpan.orgE<gt> |