Commit | Line | Data |
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1 | package Text::Tradition::Collation; |
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2 | |
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3 | use Encode qw( decode_utf8 ); |
4 | use File::Temp; |
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5 | use Graph; |
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6 | use Graph::Easy; |
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7 | use IPC::Run qw( run binary ); |
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8 | use Text::CSV_XS; |
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9 | use Text::Tradition::Collation::Path; |
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10 | use Text::Tradition::Collation::Reading; |
11 | use Text::Tradition::Collation::Relationship; |
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12 | use XML::LibXML; |
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13 | use Moose; |
14 | |
15 | has 'graph' => ( |
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16 | is => 'ro', |
17 | isa => 'Graph::Easy', |
18 | handles => { |
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19 | add_reading => 'add_node', |
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20 | add_lacuna => 'add_node', |
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21 | del_reading => 'del_node', |
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22 | add_path => 'add_edge', |
23 | del_path => 'del_edge', |
24 | reading => 'node', |
25 | path => 'edge', |
26 | readings => 'nodes', |
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27 | paths => 'edges', |
28 | relationships => 'edges', |
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29 | }, |
30 | default => sub { Graph::Easy->new( undirected => 0 ) }, |
31 | ); |
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32 | |
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33 | |
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34 | has 'tradition' => ( # TODO should this not be ro? |
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35 | is => 'rw', |
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36 | isa => 'Text::Tradition', |
37 | ); |
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38 | |
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39 | has 'svg' => ( |
40 | is => 'ro', |
41 | isa => 'Str', |
42 | writer => '_save_svg', |
43 | predicate => 'has_svg', |
44 | ); |
45 | |
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46 | has 'graphml' => ( |
47 | is => 'ro', |
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48 | isa => 'Str', |
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49 | writer => '_save_graphml', |
50 | predicate => 'has_graphml', |
51 | ); |
52 | |
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53 | has 'csv' => ( |
54 | is => 'ro', |
55 | isa => 'Str', |
56 | writer => '_save_csv', |
57 | predicate => 'has_csv', |
58 | ); |
59 | |
3a1f2523 |
60 | # Keeps track of the lemmas within the collation. At most one lemma |
61 | # per position in the graph. |
62 | has 'lemmata' => ( |
63 | is => 'ro', |
64 | isa => 'HashRef[Maybe[Str]]', |
65 | default => sub { {} }, |
66 | ); |
67 | |
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68 | has 'wit_list_separator' => ( |
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69 | is => 'rw', |
70 | isa => 'Str', |
71 | default => ', ', |
72 | ); |
73 | |
74 | has 'baselabel' => ( |
75 | is => 'rw', |
76 | isa => 'Str', |
77 | default => 'base text', |
78 | ); |
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79 | |
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80 | has 'collapsed' => ( |
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81 | is => 'rw', |
82 | isa => 'Bool', |
83 | ); |
84 | |
85 | has 'linear' => ( |
86 | is => 'rw', |
87 | isa => 'Bool', |
88 | default => 1, |
89 | ); |
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90 | |
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91 | has 'ac_label' => ( |
92 | is => 'rw', |
93 | isa => 'Str', |
94 | default => ' (a.c.)', |
95 | ); |
96 | |
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97 | |
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98 | # The collation can be created two ways: |
99 | # 1. Collate a set of witnesses (with CollateX I guess) and process |
100 | # the results as in 2. |
101 | # 2. Read a pre-prepared collation in one of a variety of formats, |
102 | # and make the graph from that. |
103 | |
104 | # The graph itself will (for now) be immutable, and the positions |
105 | # within the graph will also be immutable. We need to calculate those |
106 | # positions upon graph construction. The equivalences between graph |
107 | # nodes will be mutable, entirely determined by the user (or possibly |
108 | # by some semantic pre-processing provided by the user.) So the |
109 | # constructor should just make an empty equivalences object. The |
110 | # constructor will also need to make the witness objects, if we didn't |
111 | # come through option 1. |
112 | |
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113 | sub BUILD { |
114 | my( $self, $args ) = @_; |
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115 | $self->graph->use_class('node', 'Text::Tradition::Collation::Reading'); |
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116 | $self->graph->use_class('edge', 'Text::Tradition::Collation::Path'); |
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117 | |
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118 | # Pass through any graph-specific options. |
119 | my $shape = exists( $args->{'shape'} ) ? $args->{'shape'} : 'ellipse'; |
120 | $self->graph->set_attribute( 'node', 'shape', $shape ); |
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121 | |
122 | # Start and end points for all texts |
123 | $self->start( 'INIT' ); |
124 | $self->end( 'INIT' ); |
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125 | } |
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126 | |
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127 | around add_lacuna => sub { |
128 | my $orig = shift; |
129 | my $self = shift; |
130 | my $id = shift @_; |
131 | my $l = $self->$orig( '#LACUNA_' . $id . '#' ); |
132 | $l->is_lacuna( 1 ); |
133 | return $l; |
134 | }; |
135 | |
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136 | # Wrapper around add_path |
137 | |
138 | around add_path => sub { |
139 | my $orig = shift; |
140 | my $self = shift; |
141 | |
142 | # Make sure there are three arguments |
143 | unless( @_ == 3 ) { |
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144 | warn "Call add_path with args source, target, witness"; |
145 | return; |
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146 | } |
147 | # Make sure the proposed path does not yet exist |
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148 | # NOTE 'reading' will currently return readings and segments |
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149 | my( $source, $target, $wit ) = @_; |
150 | $source = $self->reading( $source ) |
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151 | unless ref( $source ) eq 'Text::Tradition::Collation::Reading'; |
7854e12e |
152 | $target = $self->reading( $target ) |
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153 | unless ref( $target ) eq 'Text::Tradition::Collation::Reading'; |
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154 | foreach my $path ( $source->edges_to( $target ) ) { |
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155 | if( $path->label eq $wit && $path->class eq 'edge.path' ) { |
156 | return; |
157 | } |
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158 | } |
159 | # Do the deed |
160 | $self->$orig( @_ ); |
161 | }; |
162 | |
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163 | # Wrapper around paths |
164 | around paths => sub { |
165 | my $orig = shift; |
166 | my $self = shift; |
167 | |
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168 | my @result = grep { $_->sub_class eq 'path' } $self->$orig( @_ ); |
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169 | return @result; |
170 | }; |
171 | |
172 | around relationships => sub { |
173 | my $orig = shift; |
174 | my $self = shift; |
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175 | my @result = grep { $_->sub_class eq 'relationship' } $self->$orig( @_ ); |
176 | return @result; |
177 | }; |
178 | |
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179 | # Wrapper around merge_nodes |
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180 | sub merge_readings { |
181 | my $self = shift; |
182 | my $first_node = shift; |
183 | my $second_node = shift; |
184 | $first_node->merge_from( $second_node ); |
185 | unshift( @_, $first_node, $second_node ); |
186 | return $self->graph->merge_nodes( @_ ); |
187 | } |
188 | |
15d2d3df |
189 | # Extra graph-alike utility |
190 | sub has_path { |
191 | my( $self, $source, $target, $label ) = @_; |
192 | my @paths = $source->edges_to( $target ); |
193 | my @relevant = grep { $_->label eq $label } @paths; |
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194 | return scalar @relevant; |
195 | } |
196 | |
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197 | ## Dealing with relationships between readings. This is a different |
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198 | ## sort of graph edge. Return a success/failure value and a list of |
199 | ## node pairs that have been linked. |
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200 | |
201 | sub add_relationship { |
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202 | my( $self, $source, $target, $options ) = @_; |
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203 | |
204 | # Make sure there is not another relationship between these two |
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205 | # readings already |
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206 | $source = $self->reading( $source ) |
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207 | unless ref( $source ) && $source->isa( 'Graph::Easy::Node' ); |
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208 | $target = $self->reading( $target ) |
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209 | unless ref( $target ) && $target->isa( 'Graph::Easy::Node' ); |
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210 | foreach my $rel ( $source->edges_to( $target ), $target->edges_to( $source ) ) { |
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211 | if( $rel->class eq 'edge.relationship' ) { |
212 | return ( undef, "Relationship already exists between these readings" ); |
213 | } |
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214 | } |
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215 | if( $options->{'equal_rank'} && !relationship_valid( $source, $target ) ) { |
216 | return ( undef, 'Relationship creates witness loop' ); |
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217 | } |
218 | |
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219 | # TODO Think about positional hilarity if relationships are added after positions |
220 | # are assigned. |
221 | |
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222 | my @joined = ( [ $source->name, $target->name ] ); # Keep track of the nodes we join. |
223 | |
224 | $options->{'this_relation'} = [ $source, $target ]; |
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225 | my $rel; |
226 | eval { $rel = Text::Tradition::Collation::Relationship->new( %$options ) }; |
227 | if( $@ ) { |
228 | return ( undef, $@ ); |
229 | } |
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230 | $self->graph->add_edge( $source, $target, $rel ); |
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231 | |
232 | # TODO Handle global relationship setting |
233 | |
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234 | return( 1, @joined ); |
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235 | } |
236 | |
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237 | sub relationship_valid { |
238 | my( $source, $target ) = @_; |
239 | # Check that linking the source and target in a relationship won't lead |
240 | # to a path loop for any witness. |
241 | my @proposed_related = ( $source, $target ); |
242 | push( @proposed_related, $source->related_readings ); |
243 | push( @proposed_related, $target->related_readings ); |
244 | my %pr_ids; |
245 | map { $pr_ids{ $_->name } = 1 } @proposed_related; |
246 | # The lists of 'in' and 'out' should not have any element that appears |
247 | # in 'proposed_related'. |
248 | foreach my $pr ( @proposed_related ) { |
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249 | foreach my $e ( grep { $_->sub_class eq 'path' } $pr->incoming ) { |
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250 | if( exists $pr_ids{ $e->from->name } ) { |
251 | return 0; |
252 | } |
253 | } |
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254 | foreach my $e ( grep { $_->sub_class eq 'path' } $pr->outgoing ) { |
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255 | if( exists $pr_ids{ $e->to->name } ) { |
256 | return 0; |
257 | } |
258 | } |
259 | } |
260 | return 1; |
261 | } |
262 | |
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263 | =head2 Output method(s) |
264 | |
265 | =over |
266 | |
267 | =item B<as_svg> |
268 | |
269 | print $graph->as_svg( $recalculate ); |
270 | |
271 | Returns an SVG string that represents the graph. Uses GraphViz to do |
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272 | this, because Graph::Easy doesn\'t cope well with long graphs. Unless |
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273 | $recalculate is passed (and is a true value), the method will return a |
274 | cached copy of the SVG after the first call to the method. |
275 | |
276 | =cut |
277 | |
278 | sub as_svg { |
279 | my( $self, $recalc ) = @_; |
280 | return $self->svg if $self->has_svg; |
281 | |
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282 | $self->collapse_graph_paths(); |
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283 | |
284 | my @cmd = qw/dot -Tsvg/; |
285 | my( $svg, $err ); |
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286 | my $dotfile = File::Temp->new(); |
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287 | ## TODO REMOVE |
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288 | # $dotfile->unlink_on_destroy(0); |
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289 | binmode $dotfile, ':utf8'; |
290 | print $dotfile $self->as_dot(); |
291 | push( @cmd, $dotfile->filename ); |
292 | run( \@cmd, ">", binary(), \$svg ); |
293 | $svg = decode_utf8( $svg ); |
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294 | $self->_save_svg( $svg ); |
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295 | $self->expand_graph_paths(); |
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296 | return $svg; |
297 | } |
298 | |
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299 | =item B<as_dot> |
300 | |
301 | print $graph->as_dot( $view, $recalculate ); |
302 | |
303 | Returns a string that is the collation graph expressed in dot |
304 | (i.e. GraphViz) format. The 'view' argument determines what kind of |
305 | graph is produced. |
306 | * 'path': a graph of witness paths through the collation (DEFAULT) |
307 | * 'relationship': a graph of how collation readings relate to |
308 | each other |
309 | |
310 | =cut |
311 | |
312 | sub as_dot { |
313 | my( $self, $view ) = @_; |
314 | $view = 'path' unless $view; |
315 | # TODO consider making some of these things configurable |
67da8d6c |
316 | my $graph_name = $self->tradition->name; |
317 | $graph_name =~ s/[^\w\s]//g; |
318 | $graph_name = join( '_', split( /\s+/, $graph_name ) ); |
319 | my $dot = sprintf( "digraph %s {\n", $graph_name ); |
df6d9812 |
320 | $dot .= "\tedge [ arrowhead=open ];\n"; |
321 | $dot .= "\tgraph [ rankdir=LR ];\n"; |
322 | $dot .= sprintf( "\tnode [ fontsize=%d, fillcolor=%s, style=%s, shape=%s ];\n", |
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323 | 11, "white", "filled", $self->graph->get_attribute( 'node', 'shape' ) ); |
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324 | |
325 | foreach my $reading ( $self->readings ) { |
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326 | # Need not output nodes without separate labels |
327 | next if $reading->name eq $reading->label; |
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328 | $dot .= sprintf( "\t\"%s\" [ label=\"%s\" ];\n", $reading->name, $reading->label ); |
df6d9812 |
329 | } |
330 | |
331 | my @edges = $view eq 'relationship' ? $self->relationships : $self->paths; |
332 | foreach my $edge ( @edges ) { |
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333 | my %variables = ( 'color' => '#000000', |
334 | 'fontcolor' => '#000000', |
335 | 'label' => $edge->label, |
336 | ); |
337 | my $varopts = join( ', ', map { $_.'="'.$variables{$_}.'"' } sort keys %variables ); |
338 | $dot .= sprintf( "\t\"%s\" -> \"%s\" [ %s ];\n", |
339 | $edge->from->name, $edge->to->name, $varopts ); |
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340 | } |
df6d9812 |
341 | $dot .= "}\n"; |
342 | return $dot; |
343 | } |
344 | |
8e1394aa |
345 | =item B<as_graphml> |
346 | |
347 | print $graph->as_graphml( $recalculate ) |
348 | |
349 | Returns a GraphML representation of the collation graph, with |
350 | transposition information and position information. Unless |
351 | $recalculate is passed (and is a true value), the method will return a |
352 | cached copy of the SVG after the first call to the method. |
353 | |
354 | =cut |
355 | |
356 | sub as_graphml { |
357 | my( $self, $recalc ) = @_; |
358 | return $self->graphml if $self->has_graphml; |
359 | |
360 | # Some namespaces |
361 | my $graphml_ns = 'http://graphml.graphdrawing.org/xmlns'; |
362 | my $xsi_ns = 'http://www.w3.org/2001/XMLSchema-instance'; |
363 | my $graphml_schema = 'http://graphml.graphdrawing.org/xmlns ' . |
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364 | 'http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd'; |
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365 | |
366 | # Create the document and root node |
367 | my $graphml = XML::LibXML->createDocument( "1.0", "UTF-8" ); |
368 | my $root = $graphml->createElementNS( $graphml_ns, 'graphml' ); |
369 | $graphml->setDocumentElement( $root ); |
370 | $root->setNamespace( $xsi_ns, 'xsi', 0 ); |
371 | $root->setAttributeNS( $xsi_ns, 'schemaLocation', $graphml_schema ); |
372 | |
e309421a |
373 | # Add the data keys for the graph |
374 | my %graph_data_keys; |
375 | my $gdi = 0; |
376 | my @graph_attributes = qw/ wit_list_separator baselabel linear ac_label /; |
377 | foreach my $datum ( @graph_attributes ) { |
378 | $graph_data_keys{$datum} = 'dg'.$gdi++; |
379 | my $key = $root->addNewChild( $graphml_ns, 'key' ); |
380 | $key->setAttribute( 'attr.name', $datum ); |
381 | $key->setAttribute( 'attr.type', $key eq 'linear' ? 'boolean' : 'string' ); |
382 | $key->setAttribute( 'for', 'graph' ); |
383 | $key->setAttribute( 'id', $graph_data_keys{$datum} ); |
384 | } |
f6066bac |
385 | |
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386 | # Add the data keys for nodes |
ef9d481f |
387 | my %node_data_keys; |
388 | my $ndi = 0; |
d9e873d0 |
389 | foreach my $datum ( qw/ name reading identical rank class / ) { |
910a0a6d |
390 | $node_data_keys{$datum} = 'dn'.$ndi++; |
391 | my $key = $root->addNewChild( $graphml_ns, 'key' ); |
392 | $key->setAttribute( 'attr.name', $datum ); |
393 | $key->setAttribute( 'attr.type', 'string' ); |
394 | $key->setAttribute( 'for', 'node' ); |
395 | $key->setAttribute( 'id', $node_data_keys{$datum} ); |
8e1394aa |
396 | } |
397 | |
df6d9812 |
398 | # Add the data keys for edges, i.e. witnesses |
ef9d481f |
399 | my $edi = 0; |
400 | my %edge_data_keys; |
c9bf3dbf |
401 | my @string_keys = qw/ class witness relationship /; |
402 | my @bool_keys = qw/ extra equal_rank non_correctable non_independent /; |
403 | foreach my $edge_key( @string_keys ) { |
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404 | $edge_data_keys{$edge_key} = 'de'.$edi++; |
405 | my $key = $root->addNewChild( $graphml_ns, 'key' ); |
406 | $key->setAttribute( 'attr.name', $edge_key ); |
c9bf3dbf |
407 | $key->setAttribute( 'attr.type', 'string' ); |
408 | $key->setAttribute( 'for', 'edge' ); |
409 | $key->setAttribute( 'id', $edge_data_keys{$edge_key} ); |
410 | } |
411 | foreach my $edge_key( @bool_keys ) { |
412 | $edge_data_keys{$edge_key} = 'de'.$edi++; |
413 | my $key = $root->addNewChild( $graphml_ns, 'key' ); |
414 | $key->setAttribute( 'attr.name', $edge_key ); |
415 | $key->setAttribute( 'attr.type', 'boolean' ); |
910a0a6d |
416 | $key->setAttribute( 'for', 'edge' ); |
417 | $key->setAttribute( 'id', $edge_data_keys{$edge_key} ); |
8e1394aa |
418 | } |
ef9d481f |
419 | |
8e1394aa |
420 | # Add the graph, its nodes, and its edges |
421 | my $graph = $root->addNewChild( $graphml_ns, 'graph' ); |
422 | $graph->setAttribute( 'edgedefault', 'directed' ); |
94c00c71 |
423 | $graph->setAttribute( 'id', $self->tradition->name ); |
8e1394aa |
424 | $graph->setAttribute( 'parse.edgeids', 'canonical' ); |
df6d9812 |
425 | $graph->setAttribute( 'parse.edges', scalar($self->paths) ); |
8e1394aa |
426 | $graph->setAttribute( 'parse.nodeids', 'canonical' ); |
df6d9812 |
427 | $graph->setAttribute( 'parse.nodes', scalar($self->readings) ); |
8e1394aa |
428 | $graph->setAttribute( 'parse.order', 'nodesfirst' ); |
e309421a |
429 | |
430 | # Collation attribute data |
431 | foreach my $datum ( @graph_attributes ) { |
432 | _add_graphml_data( $graph, $graph_data_keys{$datum}, $self->$datum ); |
433 | } |
8e1394aa |
434 | |
435 | my $node_ctr = 0; |
436 | my %node_hash; |
b15511bf |
437 | # Add our readings to the graph |
b5054ca9 |
438 | foreach my $n ( sort { $a->name cmp $b->name } $self->readings ) { |
910a0a6d |
439 | my $node_el = $graph->addNewChild( $graphml_ns, 'node' ); |
440 | my $node_xmlid = 'n' . $node_ctr++; |
441 | $node_hash{ $n->name } = $node_xmlid; |
442 | $node_el->setAttribute( 'id', $node_xmlid ); |
443 | _add_graphml_data( $node_el, $node_data_keys{'name'}, $n->name ); |
444 | _add_graphml_data( $node_el, $node_data_keys{'reading'}, $n->label ); |
d9e873d0 |
445 | _add_graphml_data( $node_el, $node_data_keys{'rank'}, $n->rank ) |
446 | if $n->has_rank; |
910a0a6d |
447 | _add_graphml_data( $node_el, $node_data_keys{'class'}, $n->sub_class ); |
448 | _add_graphml_data( $node_el, $node_data_keys{'identical'}, $n->primary->name ) |
94c00c71 |
449 | if $n->has_primary && $n->primary ne $n; |
b15511bf |
450 | } |
451 | |
94c00c71 |
452 | # Add the path and relationship edges |
df6d9812 |
453 | my $edge_ctr = 0; |
ef9d481f |
454 | foreach my $e ( sort { $a->from->name cmp $b->from->name } $self->graph->edges() ) { |
910a0a6d |
455 | my( $name, $from, $to ) = ( 'e'.$edge_ctr++, |
456 | $node_hash{ $e->from->name() }, |
457 | $node_hash{ $e->to->name() } ); |
458 | my $edge_el = $graph->addNewChild( $graphml_ns, 'edge' ); |
459 | $edge_el->setAttribute( 'source', $from ); |
460 | $edge_el->setAttribute( 'target', $to ); |
461 | $edge_el->setAttribute( 'id', $name ); |
462 | # Add the edge class |
463 | _add_graphml_data( $edge_el, $edge_data_keys{'class'}, $e->sub_class ); |
94c00c71 |
464 | |
465 | # For some classes we have extra information to save. |
910a0a6d |
466 | if( $e->sub_class eq 'path' ) { |
467 | # It's a witness path, so add the witness |
468 | my $base = $e->label; |
469 | my $key = $edge_data_keys{'witness_main'}; |
94c00c71 |
470 | # Is this an ante-corr witness? |
471 | my $aclabel = $self->ac_label; |
472 | if( $e->label =~ /^(.*)\Q$aclabel\E$/ ) { |
473 | # Keep the base witness |
910a0a6d |
474 | $base = $1; |
94c00c71 |
475 | # ...and record that this is an 'extra' reading path |
476 | _add_graphml_data( $edge_el, $edge_data_keys{'extra'}, 'true' ); |
910a0a6d |
477 | } |
94c00c71 |
478 | _add_graphml_data( $edge_el, $edge_data_keys{'witness'}, $base ); |
910a0a6d |
479 | } elsif( $e->sub_class eq 'relationship' ) { |
c9bf3dbf |
480 | # It's a relationship, so save the relationship data |
910a0a6d |
481 | _add_graphml_data( $edge_el, $edge_data_keys{'relationship'}, $e->label ); |
c9bf3dbf |
482 | _add_graphml_data( $edge_el, $edge_data_keys{'equal_rank'}, $e->equal_rank ); |
483 | _add_graphml_data( $edge_el, $edge_data_keys{'non_correctable'}, $e->non_correctable ); |
484 | _add_graphml_data( $edge_el, $edge_data_keys{'non_independent'}, $e->non_independent ); |
94c00c71 |
485 | } |
8e1394aa |
486 | } |
487 | |
94c00c71 |
488 | # Save and return the thing |
489 | my $result = decode_utf8( $graphml->toString(1) ); |
490 | $self->_save_graphml( $result ); |
491 | return $result; |
df6d9812 |
492 | } |
493 | |
b15511bf |
494 | sub _add_graphml_data { |
495 | my( $el, $key, $value ) = @_; |
b15511bf |
496 | return unless defined $value; |
c9bf3dbf |
497 | my $data_el = $el->addNewChild( $el->namespaceURI, 'data' ); |
b15511bf |
498 | $data_el->setAttribute( 'key', $key ); |
499 | $data_el->appendText( $value ); |
8e1394aa |
500 | } |
501 | |
910a0a6d |
502 | =item B<as_csv> |
503 | |
504 | print $graph->as_csv( $recalculate ) |
505 | |
506 | Returns a CSV alignment table representation of the collation graph, one |
507 | row per witness (or witness uncorrected.) Unless $recalculate is passed |
508 | (and is a true value), the method will return a cached copy of the CSV |
509 | after the first call to the method. |
510 | |
511 | =cut |
512 | |
513 | sub as_csv { |
514 | my( $self, $recalc ) = @_; |
515 | return $self->csv if $self->has_csv; |
516 | my $table = $self->make_alignment_table; |
517 | my $csv = Text::CSV_XS->new( { binary => 1, quote_null => 0 } ); |
518 | my @result; |
519 | foreach my $row ( @$table ) { |
520 | $csv->combine( @$row ); |
521 | push( @result, decode_utf8( $csv->string ) ); |
522 | } |
523 | $self->_save_csv( join( "\n", @result ) ); |
524 | return $self->csv; |
525 | } |
526 | |
0e476982 |
527 | # Make an alignment table - $noderefs controls whether the objects |
528 | # in the table are the nodes or simply their readings. |
9f3ba6f7 |
529 | |
910a0a6d |
530 | sub make_alignment_table { |
0e476982 |
531 | my( $self, $noderefs ) = @_; |
910a0a6d |
532 | unless( $self->linear ) { |
533 | warn "Need a linear graph in order to make an alignment table"; |
534 | return; |
535 | } |
536 | my $table; |
537 | my @all_pos = sort { $a <=> $b } $self->possible_positions; |
538 | foreach my $wit ( $self->tradition->witnesses ) { |
eca16057 |
539 | # print STDERR "Making witness row(s) for " . $wit->sigil . "\n"; |
0e476982 |
540 | my @row = _make_witness_row( $wit->path, \@all_pos, $noderefs ); |
910a0a6d |
541 | unshift( @row, $wit->sigil ); |
542 | push( @$table, \@row ); |
543 | if( $wit->has_ante_corr ) { |
0e476982 |
544 | my @ac_row = _make_witness_row( $wit->uncorrected_path, \@all_pos, $noderefs ); |
910a0a6d |
545 | unshift( @ac_row, $wit->sigil . $self->ac_label ); |
546 | push( @$table, \@ac_row ); |
547 | } |
548 | } |
0e476982 |
549 | |
910a0a6d |
550 | # Return a table where the witnesses read in columns rather than rows. |
551 | my $turned = _turn_table( $table ); |
552 | return $turned; |
553 | } |
554 | |
555 | sub _make_witness_row { |
0e476982 |
556 | my( $path, $positions, $noderefs ) = @_; |
910a0a6d |
557 | my %char_hash; |
558 | map { $char_hash{$_} = undef } @$positions; |
559 | foreach my $rdg ( @$path ) { |
eca16057 |
560 | my $rtext = $rdg->text; |
561 | $rtext = '#LACUNA#' if $rdg->is_lacuna; |
67da8d6c |
562 | # print STDERR "No rank for " . $rdg->name . "\n" unless defined $rdg->rank; |
0e476982 |
563 | $char_hash{$rdg->rank} = $noderefs ? $rdg : $rtext; |
910a0a6d |
564 | } |
565 | my @row = map { $char_hash{$_} } @$positions; |
eca16057 |
566 | # Fill in lacuna markers for undef spots in the row |
567 | my $last_el = shift @row; |
568 | my @filled_row = ( $last_el ); |
569 | foreach my $el ( @row ) { |
0e476982 |
570 | # If we are using node reference, make the lacuna node appear many times |
571 | # in the table. If not, use the lacuna tag. |
572 | if( $last_el && _el_is_lacuna( $last_el ) && !defined $el ) { |
573 | $el = $noderefs ? $last_el : '#LACUNA#'; |
eca16057 |
574 | } |
575 | push( @filled_row, $el ); |
576 | $last_el = $el; |
577 | } |
578 | return @filled_row; |
910a0a6d |
579 | } |
580 | |
0e476982 |
581 | # Tiny utility function to say if a table element is a lacuna |
582 | sub _el_is_lacuna { |
583 | my $el = shift; |
584 | return 1 if $el eq '#LACUNA#'; |
585 | return 1 if ref( $el ) eq 'Text::Tradition::Collation::Reading' |
586 | && $el->is_lacuna; |
587 | return 0; |
588 | } |
589 | |
910a0a6d |
590 | # Helper to turn the witnesses along columns rather than rows. Assumes |
591 | # equal-sized rows. |
592 | sub _turn_table { |
593 | my( $table ) = @_; |
594 | my $result = []; |
595 | return $result unless scalar @$table; |
596 | my $nrows = scalar @{$table->[0]}; |
597 | foreach my $idx ( 0 .. $nrows - 1 ) { |
598 | foreach my $wit ( 0 .. $#{$table} ) { |
599 | $result->[$idx]->[$wit] = $table->[$wit]->[$idx]; |
600 | } |
601 | } |
602 | return $result; |
603 | } |
604 | |
605 | |
3265b0ce |
606 | sub collapse_graph_paths { |
1f563ac3 |
607 | my $self = shift; |
3265b0ce |
608 | # Our collation graph has an path per witness. This is great for |
1f563ac3 |
609 | # calculation purposes, but terrible for display. Thus we want to |
3265b0ce |
610 | # display only one path between any two nodes. |
1f563ac3 |
611 | |
612 | return if $self->collapsed; |
613 | |
3265b0ce |
614 | print STDERR "Collapsing witness paths in graph...\n"; |
1f563ac3 |
615 | |
616 | # Don't list out every witness if we have more than half to list. |
910a0a6d |
617 | my $majority = int( scalar( $self->tradition->witnesses ) / 2 ) + 1; |
a0093bf2 |
618 | # But don't compress if there are only a few witnesses. |
619 | $majority = 4 if $majority < 4; |
b15511bf |
620 | foreach my $node ( $self->readings ) { |
910a0a6d |
621 | my $newlabels = {}; |
622 | # We will visit each node, so we only look ahead. |
623 | foreach my $edge ( $node->outgoing() ) { |
624 | next unless $edge->class eq 'edge.path'; |
625 | add_hash_entry( $newlabels, $edge->to->name, $edge->name ); |
626 | $self->del_path( $edge ); |
627 | } |
628 | |
629 | foreach my $newdest ( keys %$newlabels ) { |
630 | my $label; |
631 | my @compressed_wits = @{$newlabels->{$newdest}}; |
632 | if( @compressed_wits < $majority ) { |
633 | $label = join( ', ', sort( @{$newlabels->{$newdest}} ) ); |
634 | } else { |
635 | ## TODO FIX THIS HACK |
636 | my @aclabels; |
637 | foreach my $wit ( @compressed_wits ) { |
638 | push( @aclabels, $wit ) if( $wit =~ /^(.*?)(\s*\(?a\.\s*c\.\)?)$/ ); |
639 | } |
640 | $label = join( ', ', 'majority', sort( @aclabels ) ); |
641 | } |
642 | |
643 | my $newpath = $self->add_path( $node, $self->reading( $newdest ), $label ); |
644 | $newpath->hidden_witnesses( \@compressed_wits ); |
645 | } |
1f563ac3 |
646 | } |
647 | |
648 | $self->collapsed( 1 ); |
649 | } |
650 | |
3265b0ce |
651 | sub expand_graph_paths { |
1f563ac3 |
652 | my $self = shift; |
3265b0ce |
653 | # Our collation graph has only one path between any two nodes. |
1f563ac3 |
654 | # This is great for display, but not so great for analysis. |
3265b0ce |
655 | # Expand this so that each witness has its own path between any |
1f563ac3 |
656 | # two reading nodes. |
657 | return unless $self->collapsed; |
658 | |
3265b0ce |
659 | print STDERR "Expanding witness paths in graph...\n"; |
3265b0ce |
660 | foreach my $path( $self->paths ) { |
910a0a6d |
661 | my $from = $path->from; |
662 | my $to = $path->to; |
663 | warn sprintf( "No hidden witnesses on %s -> %s ?", $from->name, $to->name ) |
664 | unless $path->has_hidden_witnesses; |
665 | my @wits = @{$path->hidden_witnesses}; |
666 | $self->del_path( $path ); |
667 | foreach ( @wits ) { |
668 | $self->add_path( $from, $to, $_ ); |
669 | } |
1f563ac3 |
670 | } |
671 | $self->collapsed( 0 ); |
672 | } |
673 | |
8e1394aa |
674 | =back |
675 | |
de51424a |
676 | =head2 Navigation methods |
677 | |
678 | =over |
679 | |
8e1394aa |
680 | =item B<start> |
681 | |
682 | my $beginning = $collation->start(); |
683 | |
684 | Returns the beginning of the collation, a meta-reading with label '#START#'. |
685 | |
686 | =cut |
687 | |
688 | sub start { |
4a8828f0 |
689 | # Return the beginning reading of the graph. |
94c00c71 |
690 | my( $self, $new_start ) = @_; |
691 | my $start = $self->reading( '#START#' ); |
692 | if( ref( $new_start ) eq 'Text::Tradition::Collation::Reading' ) { |
693 | # Replace the existing start node. |
910a0a6d |
694 | $self->del_reading( '#START#' ); |
695 | $self->graph->rename_node( $new_start, '#START#' ); |
94c00c71 |
696 | $start = $new_start; |
697 | } elsif ( $new_start && $new_start eq 'INIT' ) { |
698 | # Make a new start node. |
699 | $start = $self->add_reading( '#START#' ); |
910a0a6d |
700 | } |
94c00c71 |
701 | # Make sure the start node is a meta node |
702 | $start->is_meta( 1 ); |
910a0a6d |
703 | # Make sure the start node has a start position. |
94c00c71 |
704 | unless( $start->has_rank ) { |
705 | $start->rank( '0' ); |
8e1394aa |
706 | } |
94c00c71 |
707 | return $start; |
8e1394aa |
708 | } |
709 | |
910a0a6d |
710 | =item B<end> |
711 | |
712 | my $end = $collation->end(); |
713 | |
714 | Returns the end of the collation, a meta-reading with label '#END#'. |
715 | |
716 | =cut |
717 | |
718 | sub end { |
719 | my $self = shift; |
720 | my( $new_end ) = @_; |
94c00c71 |
721 | my $end = $self->reading( '#END#' ); |
722 | if( ref( $new_end ) eq 'Text::Tradition::Collation::Reading' ) { |
910a0a6d |
723 | $self->del_reading( '#END#' ); |
724 | $self->graph->rename_node( $new_end, '#END#' ); |
94c00c71 |
725 | $end = $new_end |
726 | } elsif ( $new_end && $new_end eq 'INIT' ) { |
727 | # Make a new start node. |
728 | $end = $self->add_reading( '#END#' ); |
910a0a6d |
729 | } |
94c00c71 |
730 | # Make sure the start node is a meta node |
731 | $end->is_meta( 1 ); |
732 | return $end; |
910a0a6d |
733 | } |
734 | |
e2902068 |
735 | =item B<reading_sequence> |
736 | |
737 | my @readings = $graph->reading_sequence( $first, $last, $path[, $alt_path] ); |
738 | |
739 | Returns the ordered list of readings, starting with $first and ending |
740 | with $last, along the given witness path. If no path is specified, |
741 | assume that the path is that of the base text (if any.) |
742 | |
743 | =cut |
744 | |
910a0a6d |
745 | # TODO Think about returning some lazy-eval iterator. |
746 | |
e2902068 |
747 | sub reading_sequence { |
748 | my( $self, $start, $end, $witness, $backup ) = @_; |
749 | |
930ff666 |
750 | $witness = $self->baselabel unless $witness; |
e2902068 |
751 | my @readings = ( $start ); |
752 | my %seen; |
753 | my $n = $start; |
930ff666 |
754 | while( $n && $n ne $end ) { |
910a0a6d |
755 | if( exists( $seen{$n->name()} ) ) { |
756 | warn "Detected loop at " . $n->name(); |
757 | last; |
758 | } |
759 | $seen{$n->name()} = 1; |
760 | |
761 | my $next = $self->next_reading( $n, $witness, $backup ); |
762 | warn "Did not find any path for $witness from reading " . $n->name |
763 | unless $next; |
764 | push( @readings, $next ); |
765 | $n = $next; |
e2902068 |
766 | } |
767 | # Check that the last reading is our end reading. |
768 | my $last = $readings[$#readings]; |
769 | warn "Last reading found from " . $start->label() . |
910a0a6d |
770 | " for witness $witness is not the end!" |
771 | unless $last eq $end; |
e2902068 |
772 | |
773 | return @readings; |
774 | } |
775 | |
4a8828f0 |
776 | =item B<next_reading> |
8e1394aa |
777 | |
4a8828f0 |
778 | my $next_reading = $graph->next_reading( $reading, $witpath ); |
8e1394aa |
779 | |
4a8828f0 |
780 | Returns the reading that follows the given reading along the given witness |
930ff666 |
781 | path. |
8e1394aa |
782 | |
783 | =cut |
784 | |
4a8828f0 |
785 | sub next_reading { |
e2902068 |
786 | # Return the successor via the corresponding path. |
8e1394aa |
787 | my $self = shift; |
4a8828f0 |
788 | return $self->_find_linked_reading( 'next', @_ ); |
8e1394aa |
789 | } |
790 | |
4a8828f0 |
791 | =item B<prior_reading> |
8e1394aa |
792 | |
4a8828f0 |
793 | my $prior_reading = $graph->prior_reading( $reading, $witpath ); |
8e1394aa |
794 | |
4a8828f0 |
795 | Returns the reading that precedes the given reading along the given witness |
930ff666 |
796 | path. |
8e1394aa |
797 | |
798 | =cut |
799 | |
4a8828f0 |
800 | sub prior_reading { |
e2902068 |
801 | # Return the predecessor via the corresponding path. |
8e1394aa |
802 | my $self = shift; |
4a8828f0 |
803 | return $self->_find_linked_reading( 'prior', @_ ); |
8e1394aa |
804 | } |
805 | |
4a8828f0 |
806 | sub _find_linked_reading { |
e2902068 |
807 | my( $self, $direction, $node, $path, $alt_path ) = @_; |
808 | my @linked_paths = $direction eq 'next' |
910a0a6d |
809 | ? $node->outgoing() : $node->incoming(); |
e2902068 |
810 | return undef unless scalar( @linked_paths ); |
8e1394aa |
811 | |
e2902068 |
812 | # We have to find the linked path that contains all of the |
813 | # witnesses supplied in $path. |
814 | my( @path_wits, @alt_path_wits ); |
815 | @path_wits = $self->witnesses_of_label( $path ) if $path; |
816 | @alt_path_wits = $self->witnesses_of_label( $alt_path ) if $alt_path; |
817 | my $base_le; |
818 | my $alt_le; |
819 | foreach my $le ( @linked_paths ) { |
910a0a6d |
820 | if( $le->name eq $self->baselabel ) { |
821 | $base_le = $le; |
822 | } else { |
823 | my @le_wits = $self->witnesses_of_label( $le->name ); |
824 | if( _is_within( \@path_wits, \@le_wits ) ) { |
825 | # This is the right path. |
826 | return $direction eq 'next' ? $le->to() : $le->from(); |
827 | } elsif( _is_within( \@alt_path_wits, \@le_wits ) ) { |
828 | $alt_le = $le; |
829 | } |
830 | } |
8e1394aa |
831 | } |
e2902068 |
832 | # Got this far? Return the alternate path if it exists. |
833 | return $direction eq 'next' ? $alt_le->to() : $alt_le->from() |
910a0a6d |
834 | if $alt_le; |
e2902068 |
835 | |
836 | # Got this far? Return the base path if it exists. |
837 | return $direction eq 'next' ? $base_le->to() : $base_le->from() |
910a0a6d |
838 | if $base_le; |
e2902068 |
839 | |
840 | # Got this far? We have no appropriate path. |
8e1394aa |
841 | warn "Could not find $direction node from " . $node->label |
910a0a6d |
842 | . " along path $path"; |
8e1394aa |
843 | return undef; |
844 | } |
845 | |
4a8828f0 |
846 | # Some set logic. |
847 | sub _is_within { |
848 | my( $set1, $set2 ) = @_; |
7854e12e |
849 | my $ret = @$set1; # will be 0, i.e. false, if set1 is empty |
4a8828f0 |
850 | foreach my $el ( @$set1 ) { |
910a0a6d |
851 | $ret = 0 unless grep { /^\Q$el\E$/ } @$set2; |
4a8828f0 |
852 | } |
853 | return $ret; |
854 | } |
855 | |
de51424a |
856 | |
857 | ## INITIALIZATION METHODS - for use by parsers |
4a8828f0 |
858 | # Walk the paths for each witness in the graph, and return the nodes |
e2902068 |
859 | # that the graph has in common. If $using_base is true, some |
860 | # different logic is needed. |
7e450e44 |
861 | # NOTE This does not create paths; it merely finds common readings. |
4a8828f0 |
862 | |
863 | sub walk_witness_paths { |
7e450e44 |
864 | my( $self ) = @_; |
4a8828f0 |
865 | # For each witness, walk the path through the graph. |
866 | # Then we need to find the common nodes. |
867 | # TODO This method is going to fall down if we have a very gappy |
868 | # text in the collation. |
869 | my $paths = {}; |
3a1f2523 |
870 | my @common_readings; |
910a0a6d |
871 | foreach my $wit ( $self->tradition->witnesses ) { |
872 | my $curr_reading = $self->start; |
7e450e44 |
873 | my @wit_path = $self->reading_sequence( $self->start, $self->end, |
910a0a6d |
874 | $wit->sigil ); |
875 | $wit->path( \@wit_path ); |
876 | |
877 | # Detect the common readings. |
878 | @common_readings = _find_common( \@common_readings, \@wit_path ); |
4a8828f0 |
879 | } |
880 | |
881 | # Mark all the nodes as either common or not. |
3a1f2523 |
882 | foreach my $cn ( @common_readings ) { |
910a0a6d |
883 | print STDERR "Setting " . $cn->name . " / " . $cn->label |
884 | . " as common node\n"; |
885 | $cn->make_common; |
4a8828f0 |
886 | } |
887 | foreach my $n ( $self->readings() ) { |
910a0a6d |
888 | $n->make_variant unless $n->is_common; |
4a8828f0 |
889 | } |
3a1f2523 |
890 | # Return an array of the common nodes in order. |
891 | return @common_readings; |
4a8828f0 |
892 | } |
893 | |
930ff666 |
894 | sub _find_common { |
895 | my( $common_readings, $new_path ) = @_; |
896 | my @cr; |
897 | if( @$common_readings ) { |
910a0a6d |
898 | foreach my $n ( @$new_path ) { |
899 | push( @cr, $n ) if grep { $_ eq $n } @$common_readings; |
900 | } |
930ff666 |
901 | } else { |
910a0a6d |
902 | push( @cr, @$new_path ); |
930ff666 |
903 | } |
904 | return @cr; |
905 | } |
906 | |
907 | sub _remove_common { |
908 | my( $common_readings, $divergence ) = @_; |
909 | my @cr; |
910 | my %diverged; |
911 | map { $diverged{$_->name} = 1 } @$divergence; |
912 | foreach( @$common_readings ) { |
910a0a6d |
913 | push( @cr, $_ ) unless $diverged{$_->name}; |
930ff666 |
914 | } |
915 | return @cr; |
916 | } |
917 | |
918 | |
7e450e44 |
919 | # For use when a collation is constructed from a base text and an apparatus. |
920 | # We have the sequences of readings and just need to add path edges. |
e2902068 |
921 | |
6a222840 |
922 | sub make_witness_paths { |
923 | my( $self ) = @_; |
910a0a6d |
924 | foreach my $wit ( $self->tradition->witnesses ) { |
925 | print STDERR "Making path for " . $wit->sigil . "\n"; |
926 | $self->make_witness_path( $wit ); |
7854e12e |
927 | } |
7854e12e |
928 | } |
929 | |
6a222840 |
930 | sub make_witness_path { |
7854e12e |
931 | my( $self, $wit ) = @_; |
932 | my @chain = @{$wit->path}; |
15d2d3df |
933 | my $sig = $wit->sigil; |
7854e12e |
934 | foreach my $idx ( 0 .. $#chain-1 ) { |
910a0a6d |
935 | $self->add_path( $chain[$idx], $chain[$idx+1], $sig ); |
7854e12e |
936 | } |
d9e873d0 |
937 | if( $wit->has_ante_corr ) { |
938 | @chain = @{$wit->uncorrected_path}; |
939 | foreach my $idx( 0 .. $#chain-1 ) { |
940 | my $source = $chain[$idx]; |
941 | my $target = $chain[$idx+1]; |
942 | $self->add_path( $source, $target, $sig.$self->ac_label ) |
943 | unless $self->has_path( $source, $target, $sig ); |
944 | } |
15d2d3df |
945 | } |
e2902068 |
946 | } |
947 | |
910a0a6d |
948 | sub calculate_ranks { |
949 | my $self = shift; |
950 | # Walk a version of the graph where every node linked by a relationship |
951 | # edge is fundamentally the same node, and do a topological ranking on |
952 | # the nodes in this graph. |
c9bf3dbf |
953 | my $topo_graph = Graph->new(); |
910a0a6d |
954 | my %rel_containers; |
955 | my $rel_ctr = 0; |
956 | # Add the nodes |
957 | foreach my $r ( $self->readings ) { |
958 | next if exists $rel_containers{$r->name}; |
959 | my @rels = $r->related_readings( 'colocated' ); |
960 | if( @rels ) { |
961 | # Make a relationship container. |
962 | push( @rels, $r ); |
c9bf3dbf |
963 | my $rn = 'rel_container_' . $rel_ctr++; |
964 | $topo_graph->add_vertex( $rn ); |
910a0a6d |
965 | foreach( @rels ) { |
966 | $rel_containers{$_->name} = $rn; |
967 | } |
968 | } else { |
969 | # Add a new node to mirror the old node. |
c9bf3dbf |
970 | $rel_containers{$r->name} = $r->name; |
971 | $topo_graph->add_vertex( $r->name ); |
910a0a6d |
972 | } |
4a8828f0 |
973 | } |
3a1f2523 |
974 | |
910a0a6d |
975 | # Add the edges. Need only one edge between any pair of nodes. |
976 | foreach my $r ( $self->readings ) { |
977 | foreach my $n ( $r->neighbor_readings( 'forward' ) ) { |
c9bf3dbf |
978 | my( $tfrom, $tto ) = ( $rel_containers{$r->name}, |
979 | $rel_containers{$n->name} ); |
980 | $topo_graph->add_edge( $tfrom, $tto ) |
981 | unless $topo_graph->has_edge( $tfrom, $tto ); |
910a0a6d |
982 | } |
983 | } |
984 | |
985 | # Now do the rankings, starting with the start node. |
986 | my $topo_start = $rel_containers{$self->start->name}; |
c9bf3dbf |
987 | my $node_ranks = { $topo_start => 0 }; |
910a0a6d |
988 | my @curr_origin = ( $topo_start ); |
989 | # A little iterative function. |
990 | while( @curr_origin ) { |
c9bf3dbf |
991 | @curr_origin = _assign_rank( $topo_graph, $node_ranks, @curr_origin ); |
910a0a6d |
992 | } |
993 | # Transfer our rankings from the topological graph to the real one. |
994 | foreach my $r ( $self->readings ) { |
67da8d6c |
995 | if( defined $node_ranks->{$rel_containers{$r->name}} ) { |
996 | $r->rank( $node_ranks->{$rel_containers{$r->name}} ); |
997 | } else { |
998 | $DB::single = 1; |
999 | die "No rank calculated for node " . $r->name |
1000 | . " - do you have a cycle in the graph?"; |
1001 | } |
de51424a |
1002 | } |
8e1394aa |
1003 | } |
3a1f2523 |
1004 | |
910a0a6d |
1005 | sub _assign_rank { |
c9bf3dbf |
1006 | my( $graph, $node_ranks, @current_nodes ) = @_; |
910a0a6d |
1007 | # Look at each of the children of @current_nodes. If all the child's |
1008 | # parents have a rank, assign it the highest rank + 1 and add it to |
c9bf3dbf |
1009 | # @next_nodes. Otherwise skip it; we will return when the highest-ranked |
1010 | # parent gets a rank. |
910a0a6d |
1011 | my @next_nodes; |
1012 | foreach my $c ( @current_nodes ) { |
c9bf3dbf |
1013 | warn "Current reading $c has no rank!" |
1014 | unless exists $node_ranks->{$c}; |
1015 | # print STDERR "Looking at child of node $c, rank " |
1016 | # . $node_ranks->{$c} . "\n"; |
1017 | foreach my $child ( $graph->successors( $c ) ) { |
1018 | next if exists $node_ranks->{$child}; |
910a0a6d |
1019 | my $highest_rank = -1; |
1020 | my $skip = 0; |
c9bf3dbf |
1021 | foreach my $parent ( $graph->predecessors( $child ) ) { |
1022 | if( exists $node_ranks->{$parent} ) { |
1023 | $highest_rank = $node_ranks->{$parent} |
1024 | if $highest_rank <= $node_ranks->{$parent}; |
910a0a6d |
1025 | } else { |
1026 | $skip = 1; |
1027 | last; |
1028 | } |
1029 | } |
1030 | next if $skip; |
c9bf3dbf |
1031 | my $c_rank = $highest_rank + 1; |
1032 | # print STDERR "Assigning rank $c_rank to node $child \n"; |
1033 | $node_ranks->{$child} = $c_rank; |
910a0a6d |
1034 | push( @next_nodes, $child ); |
1035 | } |
1036 | } |
1037 | return @next_nodes; |
4cdd82f1 |
1038 | } |
910a0a6d |
1039 | |
0e476982 |
1040 | # Another method to make up for rough collation methods. If the same reading |
1041 | # appears multiple times at the same rank, collapse the nodes. |
1042 | sub flatten_ranks { |
1043 | my $self = shift; |
1044 | my %unique_rank_rdg; |
1045 | foreach my $rdg ( $self->readings ) { |
1046 | next unless $rdg->has_rank; |
1047 | my $key = $rdg->rank . "||" . $rdg->text; |
1048 | if( exists $unique_rank_rdg{$key} ) { |
1049 | # Combine! |
1050 | print STDERR "Combining readings at same rank: $key\n"; |
1051 | $self->merge_readings( $unique_rank_rdg{$key}, $rdg ); |
1052 | } else { |
1053 | $unique_rank_rdg{$key} = $rdg; |
1054 | } |
1055 | } |
1056 | } |
1057 | |
1058 | |
4cdd82f1 |
1059 | sub possible_positions { |
3a1f2523 |
1060 | my $self = shift; |
910a0a6d |
1061 | my %all_pos; |
1062 | map { $all_pos{ $_->rank } = 1 } $self->readings; |
1063 | return keys %all_pos; |
3a1f2523 |
1064 | } |
1065 | |
4cdd82f1 |
1066 | # TODO think about indexing this. |
3a1f2523 |
1067 | sub readings_at_position { |
4cdd82f1 |
1068 | my( $self, $position, $strict ) = @_; |
4cdd82f1 |
1069 | my @answer; |
1070 | foreach my $r ( $self->readings ) { |
910a0a6d |
1071 | push( @answer, $r ) if $r->is_at_position( $position, $strict ); |
4cdd82f1 |
1072 | } |
3a1f2523 |
1073 | return @answer; |
1074 | } |
1075 | |
1076 | ## Lemmatizer functions |
1077 | |
1078 | sub init_lemmata { |
1079 | my $self = shift; |
4cdd82f1 |
1080 | |
1081 | foreach my $position ( $self->possible_positions ) { |
910a0a6d |
1082 | $self->lemmata->{$position} = undef; |
3a1f2523 |
1083 | } |
1084 | |
1085 | foreach my $cr ( $self->common_readings ) { |
910a0a6d |
1086 | $self->lemmata->{$cr->position->maxref} = $cr->name; |
3a1f2523 |
1087 | } |
1088 | } |
7e450e44 |
1089 | |
1090 | sub common_readings { |
1091 | my $self = shift; |
1092 | my @common = grep { $_->is_common } $self->readings(); |
d9e873d0 |
1093 | return sort { $a->rank <=> $b->rank } @common; |
7e450e44 |
1094 | } |
3a1f2523 |
1095 | |
1096 | =item B<lemma_readings> |
1097 | |
1098 | my @state = $graph->lemma_readings( @readings_delemmatized ); |
1099 | |
1100 | Takes a list of readings that have just been delemmatized, and returns |
1101 | a set of tuples of the form ['reading', 'state'] that indicates what |
1102 | changes need to be made to the graph. |
1103 | |
1104 | =over |
1105 | |
1106 | =item * |
1107 | |
1108 | A state of 1 means 'lemmatize this reading' |
1109 | |
1110 | =item * |
1111 | |
1112 | A state of 0 means 'delemmatize this reading' |
1113 | |
1114 | =item * |
1115 | |
1116 | A state of undef means 'an ellipsis belongs in the text here because |
1117 | no decision has been made / an earlier decision was backed out' |
1118 | |
1119 | =back |
1120 | |
1121 | =cut |
1122 | |
1123 | sub lemma_readings { |
1124 | my( $self, @toggled_off_nodes ) = @_; |
1125 | |
1126 | # First get the positions of those nodes which have been |
1127 | # toggled off. |
1128 | my $positions_off = {}; |
4cdd82f1 |
1129 | map { $positions_off->{ $_->position->reference } = $_->name } |
1130 | @toggled_off_nodes; |
de51424a |
1131 | |
3a1f2523 |
1132 | # Now for each position, we have to see if a node is on, and we |
4cdd82f1 |
1133 | # have to see if a node has been turned off. The lemmata hash |
1134 | # should contain fixed positions, range positions whose node was |
1135 | # just turned off, and range positions whose node is on. |
3a1f2523 |
1136 | my @answer; |
4cdd82f1 |
1137 | my %fixed_positions; |
1138 | # TODO One of these is probably redundant. |
1139 | map { $fixed_positions{$_} = 0 } keys %{$self->lemmata}; |
1140 | map { $fixed_positions{$_} = 0 } keys %{$positions_off}; |
1141 | map { $fixed_positions{$_} = 1 } $self->possible_positions; |
1142 | foreach my $pos ( sort { Text::Tradition::Collation::Position::str_cmp( $a, $b ) } keys %fixed_positions ) { |
910a0a6d |
1143 | # Find the state of this position. If there is an active node, |
1144 | # its name will be the state; otherwise the state will be 0 |
1145 | # (nothing at this position) or undef (ellipsis at this position) |
1146 | my $active = undef; |
1147 | $active = $self->lemmata->{$pos} if exists $self->lemmata->{$pos}; |
1148 | |
1149 | # Is there a formerly active node that was toggled off? |
1150 | if( exists( $positions_off->{$pos} ) ) { |
1151 | my $off_node = $positions_off->{$pos}; |
1152 | if( $active && $active ne $off_node) { |
1153 | push( @answer, [ $off_node, 0 ], [ $active, 1 ] ); |
1154 | } else { |
1155 | unless( $fixed_positions{$pos} ) { |
1156 | $active = 0; |
1157 | delete $self->lemmata->{$pos}; |
1158 | } |
1159 | push( @answer, [ $off_node, $active ] ); |
1160 | } |
1161 | |
1162 | # No formerly active node, so we just see if there is a currently |
1163 | # active one. |
1164 | } elsif( $active ) { |
1165 | # Push the active node, whatever it is. |
1166 | push( @answer, [ $active, 1 ] ); |
1167 | } else { |
1168 | # Push the state that is there. Arbitrarily use the first node |
1169 | # at that position. |
1170 | my @pos_nodes = $self->readings_at_position( $pos ); |
1171 | push( @answer, [ $pos_nodes[0]->name, $self->lemmata->{$pos} ] ); |
1172 | delete $self->lemmata->{$pos} unless $fixed_positions{$pos}; |
1173 | } |
3a1f2523 |
1174 | } |
4cdd82f1 |
1175 | |
3a1f2523 |
1176 | return @answer; |
1177 | } |
1178 | |
de51424a |
1179 | =item B<toggle_reading> |
1180 | |
1181 | my @readings_delemmatized = $graph->toggle_reading( $reading_name ); |
1182 | |
1183 | Takes a reading node name, and either lemmatizes or de-lemmatizes |
1184 | it. Returns a list of all readings that are de-lemmatized as a result |
1185 | of the toggle. |
1186 | |
1187 | =cut |
1188 | |
1189 | sub toggle_reading { |
1190 | my( $self, $rname ) = @_; |
1191 | |
1192 | return unless $rname; |
1193 | my $reading = $self->reading( $rname ); |
1194 | if( !$reading || $reading->is_common() ) { |
910a0a6d |
1195 | # Do nothing, it's a common node. |
1196 | return; |
de51424a |
1197 | } |
1198 | |
1199 | my $pos = $reading->position; |
4cdd82f1 |
1200 | my $fixed = $reading->position->fixed; |
1201 | my $old_state = $self->lemmata->{$pos->reference}; |
1202 | |
de51424a |
1203 | my @readings_off; |
1204 | if( $old_state && $old_state eq $rname ) { |
910a0a6d |
1205 | # Turn off the node. We turn on no others by default. |
1206 | push( @readings_off, $reading ); |
de51424a |
1207 | } else { |
910a0a6d |
1208 | # Turn on the node. |
1209 | $self->lemmata->{$pos->reference} = $rname; |
1210 | # Any other 'on' readings in the same position should be off |
1211 | # if we have a fixed position. |
1212 | push( @readings_off, $self->same_position_as( $reading, 1 ) ) |
1213 | if $pos->fixed; |
1214 | # Any node that is an identical transposed one should be off. |
1215 | push( @readings_off, $reading->identical_readings ); |
de51424a |
1216 | } |
1217 | @readings_off = unique_list( @readings_off ); |
910a0a6d |
1218 | |
de51424a |
1219 | # Turn off the readings that need to be turned off. |
1220 | my @readings_delemmatized; |
1221 | foreach my $n ( @readings_off ) { |
910a0a6d |
1222 | my $npos = $n->position; |
1223 | my $state = undef; |
1224 | $state = $self->lemmata->{$npos->reference} |
1225 | if defined $self->lemmata->{$npos->reference}; |
1226 | if( $state && $state eq $n->name ) { |
1227 | # this reading is still on, so turn it off |
1228 | push( @readings_delemmatized, $n ); |
1229 | my $new_state = undef; |
1230 | if( $npos->fixed && $n eq $reading ) { |
1231 | # This is the reading that was clicked, so if there are no |
1232 | # other readings there and this is a fixed position, turn off |
1233 | # the position. In all other cases, restore the ellipsis. |
1234 | my @other_n = $self->same_position_as( $n ); # TODO do we need strict? |
1235 | $new_state = 0 unless @other_n; |
1236 | } |
1237 | $self->lemmata->{$npos->reference} = $new_state; |
1238 | } elsif( $old_state && $old_state eq $n->name ) { |
1239 | # another reading has already been turned on here |
1240 | push( @readings_delemmatized, $n ); |
1241 | } # else some other reading was on anyway, so pass. |
de51424a |
1242 | } |
1243 | return @readings_delemmatized; |
1244 | } |
1245 | |
1246 | sub same_position_as { |
4cdd82f1 |
1247 | my( $self, $reading, $strict ) = @_; |
de51424a |
1248 | my $pos = $reading->position; |
4cdd82f1 |
1249 | my %onpath = ( $reading->name => 1 ); |
1250 | # TODO This might not always be sufficient. We really want to |
1251 | # exclude all readings on this one's path between its two |
1252 | # common points. |
1253 | map { $onpath{$_->name} = 1 } $reading->neighbor_readings; |
1254 | my @same = grep { !$onpath{$_->name} } |
1255 | $self->readings_at_position( $reading->position, $strict ); |
de51424a |
1256 | return @same; |
1257 | } |
3a1f2523 |
1258 | |
4a8828f0 |
1259 | # Return the string that joins together a list of witnesses for |
1260 | # display on a single path. |
1261 | sub path_label { |
1262 | my $self = shift; |
1263 | return join( $self->wit_list_separator, @_ ); |
1264 | } |
1265 | |
1266 | sub witnesses_of_label { |
de51424a |
1267 | my( $self, $label ) = @_; |
4a8828f0 |
1268 | my $regex = $self->wit_list_separator; |
de51424a |
1269 | my @answer = split( /\Q$regex\E/, $label ); |
1270 | return @answer; |
4a8828f0 |
1271 | } |
8e1394aa |
1272 | |
de51424a |
1273 | sub unique_list { |
1274 | my( @list ) = @_; |
1275 | my %h; |
1276 | map { $h{$_->name} = $_ } @list; |
1277 | return values( %h ); |
1278 | } |
1279 | |
1f563ac3 |
1280 | sub add_hash_entry { |
1281 | my( $hash, $key, $entry ) = @_; |
1282 | if( exists $hash->{$key} ) { |
910a0a6d |
1283 | push( @{$hash->{$key}}, $entry ); |
1f563ac3 |
1284 | } else { |
910a0a6d |
1285 | $hash->{$key} = [ $entry ]; |
1f563ac3 |
1286 | } |
1287 | } |
1288 | |
dd3b58b0 |
1289 | no Moose; |
1290 | __PACKAGE__->meta->make_immutable; |
e867486f |
1291 | |
1292 | =head1 BUGS / TODO |
1293 | |
1294 | =over |
1295 | |
1296 | =item * Rationalize edge classes |
1297 | |
1298 | =item * Port the internal graph from Graph::Easy to Graph |
1299 | |
1300 | =back |