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1 | package Text::Tradition::Parser::CTE; |
2 | |
3 | use strict; |
4 | use warnings; |
c9158e60 |
5 | use Encode qw/ decode /; |
4d85a60e |
6 | use Text::Tradition::Parser::Util qw/ collate_variants /; |
6f4946fb |
7 | use XML::LibXML; |
8 | use XML::LibXML::XPathContext; |
9 | |
10 | =head1 NAME |
11 | |
12 | Text::Tradition::Parser::CTE |
13 | |
14 | =head1 DESCRIPTION |
15 | |
16 | Parser module for Text::Tradition, given a TEI file exported from |
17 | Classical Text Editor. |
18 | |
19 | =head1 METHODS |
20 | |
21 | =over |
22 | |
23 | =item B<parse> |
24 | |
25 | my @apparatus = read( $xml_file ); |
26 | |
27 | Takes a Tradition object and a TEI file exported from Classical Text |
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28 | Editor using double-endpoint-attachment critical apparatus encoding; |
29 | initializes the Tradition from the file. |
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30 | |
31 | =cut |
32 | |
4d85a60e |
33 | my %sigil_for; # Save the XML IDs for witnesses. |
34 | my %apps; # Save the apparatus XML for a given ID. |
f6e19c7c |
35 | my %has_ac; # Keep track of witnesses that have corrections. |
6f4946fb |
36 | |
37 | sub parse { |
dfc37e38 |
38 | my( $tradition, $opts ) = @_; |
4d85a60e |
39 | my $c = $tradition->collation; # Some shorthand |
40 | |
41 | # First, parse the XML. |
c9158e60 |
42 | my( $tei, $xpc ) = _remove_formatting( $opts ); |
43 | return unless $tei; # we have already warned. |
4d85a60e |
44 | |
45 | # CTE uses a DTD rather than any xmlns-based parsing. Thus we |
46 | # need no namespace handling. |
4d85a60e |
47 | # Get the witnesses and create the witness objects. |
48 | foreach my $wit_el ( $xpc->findnodes( '//sourceDesc/listWit/witness' ) ) { |
49 | # The witness xml:id is used internally, and is *not* the sigil name. |
50 | my $id= $wit_el->getAttribute( 'xml:id' ); |
c9158e60 |
51 | my @sig_parts = $xpc->findnodes( 'descendant::text()', $wit_el ); |
4d85a60e |
52 | my $sig = _stringify_sigil( @sig_parts ); |
c9158e60 |
53 | print STDERR "Adding witness $sig\n"; |
82fa4d57 |
54 | $tradition->add_witness( sigil => $sig, sourcetype => 'collation' ); |
b8f262e8 |
55 | $sigil_for{'#'.$id} = $sig; # Make life easy by keying on the ID ref syntax |
4d85a60e |
56 | } |
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57 | |
4d85a60e |
58 | # Now go through the text and find the base tokens, apparatus tags, and |
59 | # anchors. Make a giant array of all of these things in sequence. |
60 | # TODO consider combining this with creation of graph below |
61 | my @base_text; |
62 | foreach my $pg_el ( $xpc->findnodes( '/TEI/text/body/p' ) ) { |
63 | foreach my $xn ( $pg_el->childNodes ) { |
64 | push( @base_text, _get_base( $xn ) ); |
65 | } |
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66 | } |
4d85a60e |
67 | # We now have to work through this array applying the alternate |
68 | # apparatus readings to the base text. Essentially we will put |
69 | # everything on the graph, from which we will delete the apps and |
70 | # anchors when we are done. |
f6e19c7c |
71 | |
72 | # First, put the base tokens, apps, and anchors in the graph. |
4d85a60e |
73 | my $counter = 0; |
74 | my $last = $c->start; |
75 | foreach my $item ( @base_text ) { |
76 | my $r; |
77 | if( $item->{'type'} eq 'token' ) { |
12720144 |
78 | $r = $c->add_reading( { id => 'n'.$counter++, |
79 | text => $item->{'content'} } ); |
4d85a60e |
80 | } elsif ( $item->{'type'} eq 'anchor' ) { |
10e4b1ac |
81 | $r = $c->add_reading( { id => '__ANCHOR_' . $item->{'content'} . '__', |
12720144 |
82 | is_ph => 1 } ); |
4d85a60e |
83 | } elsif ( $item->{'type'} eq 'app' ) { |
10e4b1ac |
84 | my $tag = '__APP_' . $counter++ . '__'; |
12720144 |
85 | $r = $c->add_reading( { id => $tag, is_ph => 1 } ); |
4d85a60e |
86 | $apps{$tag} = $item->{'content'}; |
87 | } |
f6e19c7c |
88 | $c->add_path( $last, $r, $c->baselabel ); |
4d85a60e |
89 | $last = $r; |
6f4946fb |
90 | } |
f6e19c7c |
91 | $c->add_path( $last, $c->end, $c->baselabel ); |
4d85a60e |
92 | |
93 | # Now we can parse the apparatus entries, and add the variant readings |
94 | # to the graph. |
95 | |
96 | foreach my $app_id ( keys %apps ) { |
97 | _add_readings( $c, $app_id ); |
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98 | } |
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99 | |
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100 | # Finally, add explicit witness paths, remove the base paths, and remove |
101 | # the app/anchor tags. |
102 | expand_all_paths( $c ); |
861c3e27 |
103 | |
104 | # Save the text for each witness so that we can ensure consistency |
105 | # later on |
106 | $tradition->collation->text_from_paths(); |
c9158e60 |
107 | $tradition->collation->calculate_ranks(); |
108 | $tradition->collation->flatten_ranks(); |
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109 | } |
110 | |
4d85a60e |
111 | sub _stringify_sigil { |
112 | my( @nodes ) = @_; |
113 | my @parts = grep { /\w/ } map { $_->data } @nodes; |
222d58f1 |
114 | my $whole = join( '', @parts ); |
115 | $whole =~ s/\W//g; |
116 | return $whole; |
4d85a60e |
117 | } |
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118 | |
c9158e60 |
119 | # Get rid of all the formatting elements that get in the way of tokenization. |
120 | sub _remove_formatting { |
121 | my( $opts ) = @_; |
122 | |
123 | # First, parse the original XML |
124 | my $parser = XML::LibXML->new(); |
125 | my $doc; |
126 | if( exists $opts->{'string'} ) { |
127 | $doc = $parser->parse_string( $opts->{'string'} ); |
128 | } elsif ( exists $opts->{'file'} ) { |
129 | $doc = $parser->parse_file( $opts->{'file'} ); |
130 | } else { |
131 | warn "Could not find string or file option to parse"; |
132 | return; |
133 | } |
134 | |
135 | # Second, remove the formatting |
136 | my $xpc = XML::LibXML::XPathContext->new( $doc->documentElement ); |
137 | my @useless = $xpc->findnodes( '//hi' ); |
138 | foreach my $n ( @useless ) { |
139 | my $parent = $n->parentNode(); |
140 | my @children = $n->childNodes(); |
141 | my $first = shift @children; |
142 | $parent->replaceChild( $first, $n ); |
143 | foreach my $c ( @children ) { |
144 | $parent->insertAfter( $c, $first ); |
145 | $first = $c; |
146 | } |
147 | } |
148 | |
149 | # Third, write out and reparse to merge the text nodes. |
150 | my $result = decode( $doc->encoding, $doc->toString() ); |
151 | my $tei = $parser->parse_string( $result )->documentElement; |
152 | $xpc = XML::LibXML::XPathContext->new( $tei ); |
153 | return( $tei, $xpc ); |
154 | } |
155 | |
156 | ## Helper function to help us navigate through nested XML, picking out |
157 | ## the words, the apparatus, and the anchors. |
4d85a60e |
158 | |
159 | sub _get_base { |
160 | my( $xn ) = @_; |
161 | my @readings; |
162 | if( $xn->nodeType == XML_TEXT_NODE ) { |
163 | # Base text, just split the words on whitespace and add them |
164 | # to our sequence. |
165 | my $str = $xn->data; |
166 | $str =~ s/^\s+//; |
c9158e60 |
167 | my @tokens = split( /\s+/, $str ); |
168 | push( @readings, map { { 'type' => 'token', 'content' => $_ } } @tokens ); |
4d85a60e |
169 | } elsif( $xn->nodeName eq 'app' ) { |
170 | # Apparatus, just save the entire XML node. |
171 | push( @readings, { 'type' => 'app', 'content' => $xn } ); |
172 | } elsif( $xn->nodeName eq 'anchor' ) { |
173 | # Anchor to mark the end of some apparatus; save its ID. |
174 | push( @readings, { 'type' => 'anchor', |
175 | 'content' => $xn->getAttribute( 'xml:id' ) } ); |
176 | } elsif ( $xn->nodeName ne 'note' ) { # Any tag we don't know to disregard |
177 | print STDERR "Unrecognized tag " . $xn->nodeName . "\n"; |
6f4946fb |
178 | } |
4d85a60e |
179 | return @readings; |
6f4946fb |
180 | } |
181 | |
c9158e60 |
182 | sub _append_tokens { |
183 | my( $list, @tokens ) = @_; |
184 | if( @$list && $list->[-1]->{'content'} =~ /\#JOIN\#$/ ) { |
185 | # The list evidently ended mid-word; join the next token onto it. |
186 | my $t = shift @tokens; |
187 | if( ref $t && $t->{'type'} eq 'token' ) { |
188 | # Join the word |
189 | $t = $t->{'content'}; |
190 | } elsif( ref $t ) { |
191 | # An app or anchor intervened; end the word. |
192 | unshift( @tokens, $t ); |
193 | $t = ''; |
194 | } |
195 | $list->[-1]->{'content'} =~ s/\#JOIN\#$/$t/; |
196 | } |
197 | foreach my $t ( @tokens ) { |
198 | unless( ref( $t ) ) { |
199 | $t = { 'type' => 'token', 'content' => $t }; |
200 | } |
201 | push( @$list, $t ); |
202 | } |
203 | } |
204 | |
4d85a60e |
205 | sub _add_readings { |
206 | my( $c, $app_id ) = @_; |
207 | my $xn = $apps{$app_id}; |
208 | my $anchor = _anchor_name( $xn->getAttribute( 'to' ) ); |
209 | # Get the lemma, which is all the readings between app and anchor, |
210 | # excluding other apps or anchors. |
211 | my @lemma = _return_lemma( $c, $app_id, $anchor ); |
10e4b1ac |
212 | my $lemma_str = join( ' ', grep { $_ !~ /^__/ } map { $_->text } @lemma ); |
4d85a60e |
213 | |
214 | # For each reading, send its text to 'interpret' along with the lemma, |
215 | # and then save the list of witnesses that these tokens belong to. |
3a5d151b |
216 | my %wit_rdgs; # Maps from witnesses to the variant text |
4d85a60e |
217 | my $ctr = 0; |
218 | my $tag = $app_id; |
10e4b1ac |
219 | $tag =~ s/^\__APP_(.*)\__$/$1/; |
c9158e60 |
220 | |
4d85a60e |
221 | foreach my $rdg ( $xn->getChildrenByTagName( 'rdg' ) ) { |
222 | my @text; |
4d85a60e |
223 | foreach ( $rdg->childNodes ) { |
224 | push( @text, _get_base( $_ ) ); |
225 | } |
12720144 |
226 | my( $interpreted, $flag ) = ( '', undef ); |
227 | if( @text ) { |
228 | ( $interpreted, $flag ) = interpret( |
229 | join( ' ', map { $_->{'content'} } @text ), $lemma_str ); |
230 | } |
b8f262e8 |
231 | next if( $interpreted eq $lemma_str ) && !$flag; # Reading is lemma. |
232 | |
4d85a60e |
233 | my @rdg_nodes; |
b8f262e8 |
234 | if( $interpreted eq '#LACUNA#' ) { |
10e4b1ac |
235 | push( @rdg_nodes, $c->add_reading( { id => 'r'.$tag.".".$ctr++, |
b8f262e8 |
236 | is_lacuna => 1 } ) ); |
237 | } else { |
238 | foreach my $w ( split( /\s+/, $interpreted ) ) { |
10e4b1ac |
239 | my $r = $c->add_reading( { id => 'r'.$tag.".".$ctr++, |
b8f262e8 |
240 | text => $w } ); |
241 | push( @rdg_nodes, $r ); |
242 | } |
4d85a60e |
243 | } |
f6e19c7c |
244 | # For each listed wit, save the reading. |
245 | foreach my $wit ( split( /\s+/, $rdg->getAttribute( 'wit' ) ) ) { |
12720144 |
246 | $wit .= $flag if $flag; |
f6e19c7c |
247 | $wit_rdgs{$wit} = \@rdg_nodes; |
248 | } |
12720144 |
249 | |
3a5d151b |
250 | # Does the reading have an ID? If so it probably has a witDetail |
f6e19c7c |
251 | # attached, and we need to read it. |
3a5d151b |
252 | if( $rdg->hasAttribute( 'xml:id' ) ) { |
12720144 |
253 | warn "Witdetail on meta reading" if $flag; # this could get complicated. |
f6e19c7c |
254 | my $rid = $rdg->getAttribute( 'xml:id' ); |
255 | my $xpc = XML::LibXML::XPathContext->new( $xn ); |
256 | my @details = $xpc->findnodes( './witDetail[@target="'.$rid.'"]' ); |
257 | foreach my $d ( @details ) { |
258 | _parse_wit_detail( $d, \%wit_rdgs, \@lemma ); |
259 | } |
3a5d151b |
260 | } |
f6e19c7c |
261 | } |
262 | |
4d85a60e |
263 | # Now collate the variant readings, since it is not done for us. |
12720144 |
264 | collate_variants( $c, \@lemma, values %wit_rdgs ); |
b8f262e8 |
265 | |
4d85a60e |
266 | # Now add the witness paths for each reading. |
f6e19c7c |
267 | foreach my $wit_id ( keys %wit_rdgs ) { |
268 | my $witstr = get_sigil( $wit_id, $c ); |
269 | my $rdg_list = $wit_rdgs{$wit_id}; |
270 | _add_wit_path( $c, $rdg_list, $app_id, $anchor, $witstr ); |
6f4946fb |
271 | } |
4d85a60e |
272 | } |
6f4946fb |
273 | |
4d85a60e |
274 | sub _anchor_name { |
275 | my $xmlid = shift; |
276 | $xmlid =~ s/^\#//; |
10e4b1ac |
277 | return sprintf( "__ANCHOR_%s__", $xmlid ); |
6f4946fb |
278 | } |
279 | |
4d85a60e |
280 | sub _return_lemma { |
281 | my( $c, $app, $anchor ) = @_; |
10e4b1ac |
282 | my @nodes = grep { $_->id !~ /^__A(PP|NCHOR)/ } |
12720144 |
283 | $c->reading_sequence( $c->reading( $app ), $c->reading( $anchor ), |
284 | $c->baselabel ); |
4d85a60e |
285 | return @nodes; |
286 | } |
6f4946fb |
287 | |
288 | sub interpret { |
4d85a60e |
289 | # A utility function to change apparatus-ese into a full variant. |
290 | my( $reading, $lemma ) = @_; |
291 | return $reading if $reading eq $lemma; |
292 | my $oldreading = $reading; |
293 | # $lemma =~ s/\s+[[:punct:]]+$//; |
12720144 |
294 | my $flag; # In case of p.c. indications |
4d85a60e |
295 | my @words = split( /\s+/, $lemma ); |
296 | if( $reading =~ /^(.*) praem.$/ ) { |
297 | $reading = "$1 $lemma"; |
298 | } elsif( $reading =~ /^(.*) add.$/ ) { |
299 | $reading = "$lemma $1"; |
b8f262e8 |
300 | } elsif( $reading =~ /add. alia manu/ |
301 | || $reading =~ /inscriptionem compegi e/ # TODO huh? |
302 | || $reading eq 'inc.' # TODO huh? |
303 | ) { |
12720144 |
304 | # Ignore it. |
305 | $reading = $lemma; |
b8f262e8 |
306 | } elsif( $reading =~ /locus [uv]acuus/ |
307 | || $reading eq 'def.' |
c9158e60 |
308 | || $reading eq 'illeg.' |
309 | || $reading eq 'onleesbar' |
f6e19c7c |
310 | ) { |
b8f262e8 |
311 | $reading = '#LACUNA#'; |
312 | } elsif( $reading eq 'om.' ) { |
4d85a60e |
313 | $reading = ''; |
c9158e60 |
314 | } elsif( $reading =~ /^in[uv]\.$/ |
315 | || $reading eq 'transp.' ) { |
4d85a60e |
316 | # Hope it is two words. |
317 | print STDERR "WARNING: want to invert a lemma that is not two words\n" |
318 | unless scalar( @words ) == 2; |
319 | $reading = join( ' ', reverse( @words ) ); |
12720144 |
320 | } elsif( $reading =~ /^iter(\.|at)$/ ) { |
4d85a60e |
321 | # Repeat the lemma |
322 | $reading = "$lemma $lemma"; |
12720144 |
323 | } elsif( $reading eq 'in marg.' ) { |
324 | # There was nothing before a correction. |
325 | $reading = ''; |
326 | $flag = '_ac'; |
c9158e60 |
327 | } elsif( $reading =~ /^(.*?)\s*\(?sic([\s\w.]+)?\)?$/ ) { |
328 | # Discard any 'sic' notation; indeed, indeed. |
329 | $reading = $1; |
12720144 |
330 | } elsif( $reading =~ /^(.*) \.\.\. (.*)$/ ) { |
4d85a60e |
331 | # The first and last N words captured should replace the first and |
332 | # last N words of the lemma. |
333 | my @begin = split( /\s+/, $1 ); |
334 | my @end = split( /\s+/, $2 ); |
335 | if( scalar( @begin ) + scalar ( @end ) > scalar( @words ) ) { |
336 | # Something is wrong and we can't do the splice. |
337 | print STDERR "ERROR: $lemma is too short to accommodate $oldreading\n"; |
338 | } else { |
339 | splice( @words, 0, scalar @begin, @begin ); |
340 | splice( @words, -(scalar @end), scalar @end, @end ); |
341 | $reading = join( ' ', @words ); |
342 | } |
6f4946fb |
343 | } |
12720144 |
344 | if( $oldreading ne $reading || $flag || $oldreading =~ /\./ ) { |
345 | my $int = $reading; |
346 | $int .= " ($flag)" if $flag; |
347 | print STDERR "Interpreted $oldreading as $int given $lemma\n"; |
348 | } |
349 | return( $reading, $flag ); |
4d85a60e |
350 | } |
351 | |
f6e19c7c |
352 | sub _parse_wit_detail { |
353 | my( $detail, $readings, $lemma ) = @_; |
354 | my $wit = $detail->getAttribute( 'wit' ); |
355 | my $content = $detail->textContent; |
356 | if( $content =~ /a\.\s*c\./ ) { |
357 | # Replace the key in the $readings hash |
358 | my $rdg = delete $readings->{$wit}; |
359 | $readings->{$wit.'_ac'} = $rdg; |
360 | $has_ac{$sigil_for{$wit}} = 1; |
361 | } elsif( $content =~ /p\.\s*c\./ ) { |
362 | # If no key for the wit a.c. exists, add one pointing to the lemma |
363 | unless( exists $readings->{$wit.'_ac'} ) { |
364 | $readings->{$wit.'_ac'} = $lemma; |
365 | } |
366 | $has_ac{$sigil_for{$wit}} = 1; |
367 | } # else don't bother just yet |
368 | } |
369 | |
370 | sub get_sigil { |
371 | my( $xml_id, $c ) = @_; |
372 | if( $xml_id =~ /^(.*)_ac$/ ) { |
373 | my $real_id = $1; |
374 | return $sigil_for{$real_id} . $c->ac_label; |
375 | } else { |
376 | return $sigil_for{$xml_id}; |
377 | } |
378 | } |
379 | |
380 | sub expand_all_paths { |
381 | my( $c ) = @_; |
382 | |
383 | # Walk the collation and fish out the paths for each witness |
384 | foreach my $wit ( $c->tradition->witnesses ) { |
385 | my $sig = $wit->sigil; |
12720144 |
386 | my @path = grep { !$_->is_ph } |
f6e19c7c |
387 | $c->reading_sequence( $c->start, $c->end, $sig ); |
388 | $wit->path( \@path ); |
389 | if( $has_ac{$sig} ) { |
12720144 |
390 | my @ac_path = grep { !$_->is_ph } |
861c3e27 |
391 | $c->reading_sequence( $c->start, $c->end, $sig.$c->ac_label ); |
f6e19c7c |
392 | $wit->uncorrected_path( \@ac_path ); |
393 | } |
394 | } |
395 | |
396 | # Delete the anchors |
12720144 |
397 | foreach my $anchor ( grep { $_->is_ph } $c->readings ) { |
f6e19c7c |
398 | $c->del_reading( $anchor ); |
399 | } |
12720144 |
400 | # Delete the base edges |
401 | map { $c->del_path( $_, $c->baselabel ) } $c->paths; |
f6e19c7c |
402 | |
403 | # Make the path edges |
404 | $c->make_witness_paths(); |
4d85a60e |
405 | } |
406 | |
407 | sub _add_wit_path { |
f6e19c7c |
408 | my( $c, $rdg, $app, $anchor, $wit ) = @_; |
4d85a60e |
409 | my @nodes = @$rdg; |
f6e19c7c |
410 | push( @nodes, $c->reading( $anchor ) ); |
4d85a60e |
411 | |
f6e19c7c |
412 | my $cur = $c->reading( $app ); |
4d85a60e |
413 | foreach my $n ( @nodes ) { |
f6e19c7c |
414 | $c->add_path( $cur, $n, $wit ); |
4d85a60e |
415 | $cur = $n; |
6f4946fb |
416 | } |
6f4946fb |
417 | } |
418 | |
419 | =back |
420 | |
421 | =head1 LICENSE |
422 | |
423 | This package is free software and is provided "as is" without express |
424 | or implied warranty. You can redistribute it and/or modify it under |
425 | the same terms as Perl itself. |
426 | |
427 | =head1 AUTHOR |
428 | |
429 | Tara L Andrews, aurum@cpan.org |
430 | |
431 | =cut |
432 | |
433 | 1; |
434 | |