package Text::Tradition::Parser::CTE;
use strict;
use warnings;
use feature 'say';
use Encode qw/ decode /;
use Text::Tradition::Error;
use Text::Tradition::Parser::Util qw/ collate_variants /;
use XML::LibXML;
use XML::LibXML::XPathContext;
use TryCatch;
binmode( STDERR, ':utf8' );
=head1 NAME
Text::Tradition::Parser::CTE
=head1 DESCRIPTION
Parser module for Text::Tradition, given a TEI file exported from
Classical Text Editor.
=head1 METHODS
=head2 parse
my @apparatus = read( $xml_file );
Takes a Tradition object and a TEI file exported from Classical Text
Editor using double-endpoint-attachment critical apparatus encoding;
initializes the Tradition from the file.
=cut
my %sigil_for; # Save the XML IDs for witnesses.
my %apps; # Save the apparatus XML for a given ID.
my %has_ac; # Keep track of witnesses that have corrections.
sub parse {
my( $tradition, $opts ) = @_;
my $c = $tradition->collation; # Some shorthand
## DEBUG/TEST
$opts->{interpret_transposition} = 1;
# First, parse the XML.
my( $tei, $xpc ) = _remove_formatting( $opts );
return unless $tei; # we have already warned.
# CTE uses a DTD rather than any xmlns-based parsing. Thus we
# need no namespace handling.
# Get the witnesses and create the witness objects.
%sigil_for = ();
%apps = ();
%has_ac = ();
foreach my $wit_el ( $xpc->findnodes( '//sourceDesc/listWit/witness' ) ) {
# The witness xml:id is used internally, and is *not* the sigil name.
my $id= $wit_el->getAttribute( 'xml:id' );
# If the witness element has an abbr element, that is the sigil. Otherwise
# the whole thing is the sigil.
my $sig = $xpc->findvalue( 'abbr', $wit_el );
my $identifier = 'CTE witness';
if( $sig ) {
# The sigil is what is in the <abbr/> tag; the identifier is anything
# that follows.
$identifier = _tidy_identifier(
$xpc->findvalue( 'child::text()', $wit_el ) );
} else {
my @sig_parts = $xpc->findnodes( 'descendant::text()', $wit_el );
$sig = _stringify_sigil( @sig_parts );
}
_do_warn( $opts, "Adding witness $sig ($identifier)" );
$tradition->add_witness( sigil => $sig, identifier => $identifier,
sourcetype => 'collation' );
$sigil_for{'#'.$id} = $sig; # Make life easy by keying on the ID ref syntax
}
# Now go through the text and find the base tokens, apparatus tags, and
# anchors. Make a giant array of all of these things in sequence.
# TODO consider combining this with creation of graph below
my @base_text;
foreach my $pg_el ( $xpc->findnodes( '/TEI/text/body/p' ) ) {
foreach my $xn ( $pg_el->childNodes ) {
push( @base_text, _get_base( $xn ) );
}
}
# We now have to work through this array applying the alternate
# apparatus readings to the base text. Essentially we will put
# everything on the graph, from which we will delete the apps and
# anchors when we are done.
# First, put the base tokens, apps, and anchors in the graph. Save the
# app siglorum separately as it has to be processed in order.
my @app_sig;
my @app_crit;
my $counter = 0;
my $last = $c->start;
foreach my $item ( @base_text ) {
my $r;
if( $item->{'type'} eq 'token' ) {
$r = $c->add_reading( { id => 'n'.$counter++,
text => $item->{'content'} } );
} elsif ( $item->{'type'} eq 'anchor' ) {
$r = $c->add_reading( { id => '__ANCHOR_' . $item->{'content'} . '__',
is_ph => 1 } );
} elsif ( $item->{'type'} eq 'app' ) {
my $tag = '__APP_' . $counter++ . '__';
$r = $c->add_reading( { id => $tag, is_ph => 1 } );
my $app = $item->{'content'};
$apps{$tag} = $app;
# Apparatus should be differentiable by type attribute; apparently
# it is not. Peek at the content to categorize it.
# Apparatus criticus is type a1; app siglorum is type a2
my @sigtags = $xpc->findnodes( 'descendant::*[name(witStart) or name(witEnd)]', $app );
if( @sigtags ) {
push( @app_sig, $tag );
} else {
push( @app_crit, $tag );
}
}
$c->add_path( $last, $r, $c->baselabel );
$last = $r;
}
$c->add_path( $last, $c->end, $c->baselabel );
# Now we can parse the apparatus entries, and add the variant readings
# to the graph.
foreach my $app_id ( @app_crit ) {
_add_readings( $c, $app_id, $opts );
}
_add_lacunae( $c, @app_sig );
# Finally, add explicit witness paths, remove the base paths, and remove
# the app/anchor tags.
try {
_expand_all_paths( $c, $opts );
} catch( Text::Tradition::Error $e ) {
throw( $e->message );
} catch {
throw( $@ );
}
# Save the text for each witness so that we can ensure consistency
# later on
unless( $opts->{'nocalc'} ) {
try {
$tradition->collation->text_from_paths();
$tradition->collation->calculate_ranks();
$tradition->collation->flatten_ranks();
} catch( Text::Tradition::Error $e ) {
throw( $e->message );
} catch {
throw( $@ );
}
}
}
sub _stringify_sigil {
my( @nodes ) = @_;
my @parts = grep { /\w/ } map { $_->data } @nodes;
my $whole = join( '', @parts );
$whole =~ s/\W//g;
return $whole;
}
sub _tidy_identifier {
my( $str ) = @_;
$str =~ s/^\W+//;
return $str;
}
# Get rid of all the formatting elements that get in the way of tokenization.
sub _remove_formatting {
my( $opts ) = @_;
# First, parse the original XML
my $parser = XML::LibXML->new();
my $doc;
if( exists $opts->{'string'} ) {
$doc = $parser->parse_string( $opts->{'string'} );
} elsif ( exists $opts->{'file'} ) {
$doc = $parser->parse_file( $opts->{'file'} );
} elsif ( exists $opts->{'xmlobj'} ) {
$doc = $opts->{'xmlobj'};
} else {
warn "Could not find string or file option to parse";
return;
}
# Second, remove the formatting
my $xpc = XML::LibXML::XPathContext->new( $doc->documentElement );
my @useless = $xpc->findnodes( '//hi' );
foreach my $n ( @useless ) {
my $parent = $n->parentNode();
my @children = $n->childNodes();
my $first = shift @children;
if( $first ) {
$parent->replaceChild( $first, $n );
foreach my $c ( @children ) {
$parent->insertAfter( $c, $first );
$first = $c;
}
} else {
$parent->removeChild( $n );
}
}
# Third, write out and reparse to merge the text nodes.
my $enc = $doc->encoding || 'UTF-8';
my $result = decode( $enc, $doc->toString() );
my $tei = $parser->parse_string( $result )->documentElement;
unless( $tei->nodeName =~ /^tei(corpus)?$/i ) {
throw( "Parsed document has non-TEI root element " . $tei->nodeName );
}
$xpc = XML::LibXML::XPathContext->new( $tei );
return( $tei, $xpc );
}
## Helper function to help us navigate through nested XML, picking out
## the words, the apparatus, and the anchors.
sub _get_base {
my( $xn ) = @_;
my @readings;
if( $xn->nodeType == XML_TEXT_NODE ) {
# Base text, just split the words on whitespace and add them
# to our sequence.
my $str = $xn->data;
$str =~ s/^\s+//;
my @tokens = split( /\s+/, $str );
push( @readings, map { { type => 'token', content => $_ } } @tokens );
} elsif( $xn->nodeName eq 'app' ) {
# Apparatus, just save the entire XML node.
push( @readings, { type => 'app', content => $xn } );
} elsif( $xn->nodeName eq 'anchor' ) {
# Anchor to mark the end of some apparatus; save its ID.
if( $xn->hasAttribute('xml:id') ) {
push( @readings, { type => 'anchor',
content => $xn->getAttribute( 'xml:id' ) } );
} # if the anchor has no XML ID, it is not relevant to us.
} elsif( $xn->nodeName !~ /^(note|seg|milestone|emph)$/ ) { # Any tag we don't know to disregard
say STDERR "Unrecognized tag " . $xn->nodeName;
}
return @readings;
}
sub _append_tokens {
my( $list, @tokens ) = @_;
if( @$list && $list->[-1]->{'content'} =~ /\#JOIN\#$/ ) {
# The list evidently ended mid-word; join the next token onto it.
my $t = shift @tokens;
if( ref $t && $t->{'type'} eq 'token' ) {
# Join the word
$t = $t->{'content'};
} elsif( ref $t ) {
# An app or anchor intervened; end the word.
unshift( @tokens, $t );
$t = '';
}
$list->[-1]->{'content'} =~ s/\#JOIN\#$/$t/;
}
foreach my $t ( @tokens ) {
unless( ref( $t ) ) {
$t = { 'type' => 'token', 'content' => $t };
}
push( @$list, $t );
}
}
sub _add_readings {
my( $c, $app_id, $opts ) = @_;
my $xn = $apps{$app_id};
my $anchor = _anchor_name( $xn->getAttribute( 'to' ) );
# Get the lemma, which is all the readings between app and anchor,
# excluding other apps or anchors.
my @lemma = _return_lemma( $c, $app_id, $anchor );
my $lemma_str = join( ' ', map { $_->text } grep { !$_->is_ph } @lemma );
# For each reading, send its text to 'interpret' along with the lemma,
# and then save the list of witnesses that these tokens belong to.
my %wit_rdgs; # Maps from witnesses to the variant text
my $ctr = 0;
my $tag = $app_id;
$tag =~ s/^\__APP_(.*)\__$/$1/;
foreach my $rdg ( $xn->getChildrenByTagName( 'rdg' ) ) {
my @witlist = split( /\s+/, $rdg->getAttribute( 'wit' ) );
my @text;
foreach ( $rdg->childNodes ) {
push( @text, _get_base( $_ ) );
}
my( $interpreted, $flag ) = ( '', undef );
if( @text ) {
( $interpreted, $flag ) = interpret(
join( ' ', map { $_->{'content'} } @text ), $lemma_str, $anchor, $opts );
}
next if( $interpreted eq $lemma_str ) && !keys %$flag; # Reading is lemma.
my @rdg_nodes;
if( $interpreted eq '#LACUNA#' ) {
push( @rdg_nodes, $c->add_reading( { id => 'r'.$tag.".".$ctr++,
is_lacuna => 1 } ) );
} elsif( $flag->{'TR'} ) {
# Our reading is transposed to after the given string. Look
# down the collation base text and try to find it.
# The @rdg_nodes should remain blank here, so that the correct
# omission goes into the graph.
my @transp_nodes;
foreach my $w ( split( /\s+/, $interpreted ) ) {
my $r = $c->add_reading( { id => 'r'.$tag.".".$ctr++,
text => $w } );
push( @transp_nodes, $r );
}
if( $anchor && @lemma ) {
my $success = _attach_transposition( $c, \@lemma, $anchor,
\@transp_nodes, \@witlist, $flag->{'TR'}, $opts );
unless( $success ) {
# If we didn't manage to insert the displaced reading,
# then restore it here rather than silently deleting it.
push( @rdg_nodes, @transp_nodes );
}
}
} else {
foreach my $w ( split( /\s+/, $interpreted ) ) {
my $r = $c->add_reading( { id => 'r'.$tag.".".$ctr++,
text => $w } );
push( @rdg_nodes, $r );
}
}
# For each listed wit, save the reading.
# If an A.C. or P.C. reading is implied rather than explicitly noted,
# this is where it will be dealt with.
foreach my $wit ( @witlist ) {
$wit .= '_ac' if $flag->{'AC'};
$wit_rdgs{$wit} = \@rdg_nodes;
# If the PC flag is set, there is a corresponding AC that
# follows the lemma and has to be explicitly declared.
if( $flag->{'PC'} ) {
$wit_rdgs{$wit.'_ac'} = \@lemma;
}
}
# Does the reading have an ID? If so it probably has a witDetail
# attached, and we need to read it. If an A.C. or P.C. reading is
# declared explicity, this is where it will be dealt with.
if( $rdg->hasAttribute( 'xml:id' ) ) {
warn "Witdetail on meta reading" if $flag; # this could get complicated.
my $rid = $rdg->getAttribute( 'xml:id' );
my $xpc = XML::LibXML::XPathContext->new( $xn );
my @details = $xpc->findnodes( './witDetail[@target="'.$rid.'"]' );
foreach my $d ( @details ) {
_parse_wit_detail( $d, \%wit_rdgs, \@lemma );
}
}
}
# Now collate the variant readings, since it is not done for us.
collate_variants( $c, \@lemma, values %wit_rdgs );
# Now add the witness paths for each reading. If we don't have an anchor
# (e.g. with an initial witStart) there was no witness path to speak of.
foreach my $wit_id ( keys %wit_rdgs ) {
my $witstr = _get_sigil( $wit_id, $c->ac_label );
my $rdg_list = $wit_rdgs{$wit_id};
_add_wit_path( $c, $rdg_list, $app_id, $anchor, $witstr );
}
}
sub _anchor_name {
my $xmlid = shift;
$xmlid =~ s/^\#//;
return sprintf( "__ANCHOR_%s__", $xmlid );
}
sub _return_lemma {
my( $c, $app, $anchor ) = @_;
my @nodes = grep { $_->id !~ /^__A(PP|NCHOR)/ }
$c->reading_sequence( $c->reading( $app ), $c->reading( $anchor ),
$c->baselabel );
return @nodes;
}
# Make a best-effort attempt to attach a transposition farther down the line.
# $lemmaseq contains the Reading objects of the lemma
# $anchor contains the point at which we should start scanning for a match
# $rdgseq contains the Reading objects of the transposed reading
# (should be identical to the lemma)
# $witlist contains the list of applicable witnesses
# $reftxt contains the text to match, after which the $rdgseq should go.
sub _attach_transposition {
my( $c, $lemmaseq, $anchor, $rdgseq, $witlist, $reftxt, $opts ) = @_;
my @refwords = split( /\s+/, $reftxt );
my $checked = $c->reading( $anchor );
my $found;
my $success;
while( $checked ne $c->end && !$found ) {
my $next = $c->next_reading( $checked, $c->baselabel );
if( $next->text eq $refwords[0] ) {
# See if the entire sequence of words matches.
$found = $next;
foreach my $w ( 1..$#refwords ) {
$found = $c->next_reading( $next, $c->baselabel );
unless( $found->text eq $refwords[$w] ) {
$found = undef;
last;
}
}
}
$checked = $next;
}
if( $found ) {
# The $found variable should now contain the reading after which we
# should stick the transposition.
my $fnext = $c->next_reading( $found, $c->baselabel );
my $aclabel = $c->ac_label;
foreach my $wit_id ( @$witlist ) {
my $witstr = _get_sigil( $wit_id, $aclabel );
_add_wit_path( $c, $rdgseq, $found->id, $fnext->id, $witstr );
}
# ...and add the transposition relationship between lemma and rdgseq.
if( @$lemmaseq == @$rdgseq ) {
foreach my $i ( 0..$#{$lemmaseq} ) {
$c->add_relationship( $lemmaseq->[$i], $rdgseq->[$i],
{ type => 'transposition', annotation => 'Detected by CTE' } );
}
$success = 1;
} else {
throw( "Lemma at $found and transposed sequence different lengths?!" );
}
} else {
_do_warn( $opts, "WARNING: Unable to find $reftxt in base text for transposition" );
}
return $success;
}
=head2 interpret( $reading, $lemma )
Given a string in $reading and a corresponding lemma in $lemma, interpret what
the actual reading should be. Used to deal with apparatus-ese shorthands for
marking transpositions, prefixed or suffixed words, and the like.
=cut
sub interpret {
# A utility function to change apparatus-ese into a full variant.
my( $reading, $lemma, $anchor, $opts ) = @_;
return $reading if $reading eq $lemma;
my $oldreading = $reading;
# $lemma =~ s/\s+[[:punct:]]+$//;
my $flag = {}; # To pass back extra info about the interpretation
my @words = split( /\s+/, $lemma );
# Discard any 'sic' notation - that rather goes without saying.
$reading =~ s/([[:punct:]]+)?sic([[:punct:]]+)?//g;
# Now look for common jargon.
if( $reading =~ /^(.*) praem.$/ || $reading =~ /^praem\. (.*)$/ ) {
$reading = "$1 $lemma";
} elsif( $reading =~ /^(.*) add.$/ || $reading =~ /^add\. (.*)$/ ) {
$reading = "$lemma $1";
} elsif( $reading =~ /locus [uv]acuus/
|| $reading eq 'def.'
|| $reading eq 'illeg.'
|| $reading eq 'desunt'
) {
$reading = '#LACUNA#';
} elsif( $reading eq 'om.' ) {
$reading = '';
} elsif( $reading =~ /^in[uv]\.$/
|| $reading =~ /^tr(ans(p)?)?\.$/ ) {
# Hope it is two words.
_do_warn( $opts, "WARNING: want to invert a lemma that is not two words" )
unless scalar( @words ) == 2;
$reading = join( ' ', reverse( @words ) );
} elsif( $reading =~ /^iter(\.|at)$/ ) {
# Repeat the lemma
$reading = "$lemma $lemma";
} elsif( $reading =~ /^(.*?)\s*\(?in marg\.\)?$/ ) {
$reading = $1;
if( $reading ) {
# The given text is a correction.
$flag->{'PC'} = 1;
} else {
# The lemma itself was the correction; the witness carried
# no reading pre-correction.
$flag->{'AC'} = 1;
}
} elsif( $reading =~ /^(.*) \.\.\. (.*)$/ ) {
# The first and last N words captured should replace the first and
# last N words of the lemma.
my @begin = split( /\s+/, $1 );
my @end = split( /\s+/, $2 );
if( scalar( @begin ) + scalar ( @end ) > scalar( @words ) ) {
# Something is wrong and we can't do the splice.
throw( "$lemma is too short to accommodate $oldreading" );
} else {
splice( @words, 0, scalar @begin, @begin );
splice( @words, -(scalar @end), scalar @end, @end );
$reading = join( ' ', @words );
}
} elsif( $opts->{interpret_transposition} &&
( $reading =~ /^post\s*(?<lem>.*?)\s+tr(ans(p)?)?\.$/ ||
$reading =~ /^tr(ans(p)?)?\. post\s*(?<lem>.*)$/) ) {
# Try to deal with transposed readings
## DEBUG
say STDERR "Will attempt transposition: $reading at $anchor";
$reading = $lemma;
$flag->{'TR'} = $+{lem};
}
return( $reading, $flag );
}
sub _parse_wit_detail {
my( $detail, $readings, $lemma ) = @_;
my $wit = $detail->getAttribute( 'wit' );
my $content = $detail->textContent;
if( $content =~ /^a\.?\s*c(orr)?\.$/ ) {
# Replace the key in the $readings hash
my $rdg = delete $readings->{$wit};
$readings->{$wit.'_ac'} = $rdg;
$has_ac{$sigil_for{$wit}} = 1;
} elsif( $content =~ /^p\.?\s*c(orr)?\.$/ || $content =~ /^s\.?\s*l\.$/ ) {
# If no key for the wit a.c. exists, add one pointing to the lemma
unless( exists $readings->{$wit.'_ac'} ) {
$readings->{$wit.'_ac'} = $lemma;
}
$has_ac{$sigil_for{$wit}} = 1;
} else { #...not sure what it is?
say STDERR "WARNING: Unrecognized sigil annotation $content";
}
}
sub _add_lacunae {
my( $c, @app_id ) = @_;
# Go through the apparatus entries in order, noting where to start and stop our
# various witnesses.
my %lacunose;
my $ctr = 0;
foreach my $tag ( @app_id ) {
my $app = $apps{$tag};
# Find the anchor, if any. This marks the point where the text starts
# or ends.
my $anchor = $app->getAttribute( 'to' );
my $aname;
if( $anchor ) {
$anchor =~ s/^\#//;
$aname = _anchor_name( $anchor );
}
foreach my $rdg ( $app->getChildrenByTagName( 'rdg' ) ) {
my @witlist = map { _get_sigil( $_, $c->ac_label ) }
split( /\s+/, $rdg->getAttribute( 'wit' ) );
my @start = $rdg->getChildrenByTagName( 'witStart' );
my @end = $rdg->getChildrenByTagName( 'witEnd' );
if( @start && @end ) {
throw( "App sig entry at $anchor has both witStart and witEnd!" );
}
if( @start && $anchor &&
$c->prior_reading( $aname, $c->baselabel ) ne $c->start ) {
# We are picking back up after a hiatus. Find the last end and
# add a lacuna link between there and here.
foreach my $wit ( @witlist ) {
my $stoppoint = delete $lacunose{$wit};
my $stopname = $stoppoint ? _anchor_name( $stoppoint ) : $c->start->id;
say STDERR "Adding lacuna for $wit between $stopname and $anchor";
my $lacuna = $c->add_reading( { id => "as_$anchor.".$ctr++,
is_lacuna => 1 } );
_add_wit_path( $c, [ $lacuna ], $stopname, $aname, $wit );
}
} elsif( @end && $anchor &&
$c->next_reading( $aname, $c->baselabel ) ne $c->end ) {
# We are stopping. If we've already stopped for the given witness,
# flag an error; otherwise record the stopping point.
foreach my $wit ( @witlist ) {
if( $lacunose{$wit} ) {
throw( "Trying to end $wit at $anchor when already ended at "
. $lacunose{$wit} );
}
$lacunose{$wit} = $anchor;
}
}
}
}
# For whatever remains in the %lacunose hash, add a lacuna between that spot and
# $c->end for each of the witnesses.
foreach my $wit ( keys %lacunose ) {
next unless $lacunose{$wit};
my $aname = _anchor_name( $lacunose{$wit} );
say STDERR "Adding lacuna for $wit from $aname to end";
my $lacuna = $c->add_reading( { id => 'as_'.$lacunose{$wit}.'.'.$ctr++,
is_lacuna => 1 } );
_add_wit_path( $c, [ $lacuna ], $aname, $c->end, $wit );
}
}
sub _get_sigil {
my( $xml_id, $layerlabel ) = @_;
if( $xml_id =~ /^(.*)_ac$/ ) {
my $real_id = $1;
return $sigil_for{$real_id} . $layerlabel;
} else {
return $sigil_for{$xml_id};
}
}
sub _expand_all_paths {
my( $c, $opts ) = @_;
# Walk the collation and fish out the paths for each witness
foreach my $wit ( $c->tradition->witnesses ) {
my $sig = $wit->sigil;
my @path = grep { !$_->is_ph }
$c->reading_sequence( $c->start, $c->end, $sig );
$wit->path( \@path );
if( $has_ac{$sig} ) {
my @ac_path = grep { !$_->is_ph }
$c->reading_sequence( $c->start, $c->end, $sig.$c->ac_label );
$wit->uncorrected_path( \@ac_path );
}
}
# Delete the anchors
foreach my $anchor ( grep { $_->is_ph } $c->readings ) {
$c->del_reading( $anchor );
}
# Delete the base edges
map { $c->del_path( $_, $c->baselabel ) } $c->paths;
# Make the path edges
$c->make_witness_paths();
# Now remove any orphan nodes, and warn that we are doing so.
my %suspect_apps;
while( $c->sequence->predecessorless_vertices > 1 ) {
foreach my $v ( $c->sequence->predecessorless_vertices ) {
my $r = $c->reading( $v );
next if $r->is_start;
my $tag = $r->id;
$tag =~ s/^r(\d+)\.\d+/$1/;
_do_warn( $opts, "Deleting orphan reading $r / " . $r->text );
push( @{$suspect_apps{$tag}}, $r->id ) if $tag =~ /^\d+$/;
$c->del_reading( $r );
}
}
if( $c->sequence->successorless_vertices > 1 ) {
my @bad = grep { $_ ne $c->end->id } $c->sequence->successorless_vertices;
foreach( @bad ) {
my $tag = $_;
next unless $tag =~ /^r/;
$tag =~ s/^r(\d+)\.\d+/$1/;
push( @{$suspect_apps{$tag}}, $_ );
}
_dump_suspects( $opts, %suspect_apps );
throw( "Remaining hanging readings: @bad" );
}
_dump_suspects( $opts, %suspect_apps ) if keys %suspect_apps;
}
sub _add_wit_path {
my( $c, $rdg, $app, $anchor, $wit ) = @_;
my @nodes = @$rdg;
push( @nodes, $c->reading( $anchor ) );
my $cur = $c->reading( $app );
foreach my $n ( @nodes ) {
$c->add_path( $cur, $n, $wit );
$cur = $n;
}
}
sub _dump_suspects {
my $opts = shift;
my %list = @_;
my @warning = "Suspect apparatus entries:";
foreach my $suspect ( sort { $a <=> $b } keys %list ) {
my @badrdgs = @{$list{$suspect}};
push( @warning, _print_apparatus( $suspect ) );
push( @warning, "\t(Linked to readings @badrdgs)" );
}
_do_warn( $opts, join( "\n", @warning ) );
}
sub _print_apparatus {
my( $appid ) = @_;
my $tag = '__APP_' . $appid . '__';
my $app = $apps{$tag};
my $appstring = '';
# Interpret the XML - get the lemma and readings and print them out.
my $xpc = XML::LibXML::XPathContext->new( $app );
my $anchor = $app->getAttribute('to');
if( $anchor ) {
# We have a lemma, so we construct it.
$anchor =~ s/^#//;
$appstring .= "(Anchor $anchor) ";
my $curr = $app;
while( $curr ) {
last if $curr->nodeType eq XML_ELEMENT_NODE
&& $curr->hasAttribute( 'xml:id' )
&& $curr->getAttribute( 'xml:id' ) eq $anchor;
$appstring .= $curr->data if $curr->nodeType eq XML_TEXT_NODE;
$curr = $curr->nextSibling;
}
}
$appstring .= '] ';
my @readings;
foreach my $rdg_el ( $xpc->findnodes( 'child::rdg' ) ) {
my $rdgtext = '';
my $startend = '';
my %detail;
foreach my $child_el ( $rdg_el->childNodes ) {
if( $child_el->nodeType eq XML_TEXT_NODE ) {
$rdgtext .= $child_el->data;
} elsif( $child_el->nodeName =~ /^wit(Start|End)$/ ) {
my $startend = lc( $1 );
} elsif( $child_el->nodeName eq 'witDetail' ) {
foreach my $wit ( map { _get_sigil( $_ ) }
split( /\s+/, $child_el->getAttribute('wit') ) ) {
$detail{$wit} = $child_el->textContent;
}
}
}
my @witlist;
foreach my $witrep ( map { _get_sigil( $_ ) }
split( /\s+/, $rdg_el->getAttribute('wit') ) ) {
if( exists $detail{$witrep} ) {
$witrep .= '(' . $detail{$witrep} . ')'
}
if( $startend eq 'start' ) {
$witrep = '*' . $witrep;
} elsif( $startend eq 'end' ) {
$witrep .= '*';
}
push( @witlist, $witrep );
}
$rdgtext .= " @witlist";
push( @readings, $rdgtext );
}
$appstring .= join( ' ', @readings );
return $appstring;
}
# Helper to send warning messages either to STDERR or to an array for alternate display.
sub _do_warn {
my( $opts, $message ) = @_;
if( $opts->{'warnings_to'} ) {
push( @{$opts->{'warnings_to'}}, $message );
} else {
say STDERR $message;
}
}
sub throw {
Text::Tradition::Error->throw(
'ident' => 'Parser::CTE error',
'message' => $_[0],
);
}
=head1 LICENSE
This package is free software and is provided "as is" without express
or implied warranty. You can redistribute it and/or modify it under
the same terms as Perl itself.
=head1 AUTHOR
Tara L Andrews, aurum@cpan.org
=cut
1;