vrt2tei.pl

#! /usr/bin/perl -w


###########################################################################################################################################################
# vrt2tei.pl
# eureco
# leibniz-institut fuer deutsche sprache / csc finland esbo
# august 2024
# 
# 
# using XML::Twig , see http://www.xmltwig.org/, https://metacpan.org/pod/XML::Twiga
# 
# usage: see below the usage fugnction
# Usage:  ./vrt2tei.pl <vrtxmlfile.xml> <outfile>
#         <vrtxmlfile>: xml-ised vrt file
#
#
# TODO: 
# 1  insert dtd spec, or ref to TEI

# 3a UPLOAD in GITHUB
# 3b add @head and @deprel to I5 sowie auch @msd
# 3c bearbeitung von @head und @deprel in tei2korapxml durch Nils?
# 3d build 30 billion corpus

# 4a take care of IDs
# 4b see to the values of @xml:lang
# 5 abfangen von unerwarteten elementen dh andere als <sentence> und <paragraph>
# 5a wort reihenfolge nochmal checken
# 6 checks and balances
# 6a output nach stdout machen
# 7  How to encode Kielipankki and National Library of Finland? in teiCorpus Header
# 8  construct <idsDoc>s for the months (or go for TEI)
# 9  parallelisation in bash and application on sub corpora of KLK
# 10  re-implementation of the gawk code in the perl script
# 12  re-implement creation of text header from xml file in another twig / parametrize TEI vs I5



#remember
#formatted.xml:105613: element w: validity error : No declaration for attribute deprel of element w
#formatted.xml:105613: element w: validity error : No declaration for attribute head of element w


#
#
############################################################################################################################################################


use strict;
use warnings;

use XML::Twig; 
use XML::Generator ':pretty';  # apparently no effect when using flush();

 
use locale;                 # diese drei Zeilen, damit \b im regex nicht Umlaute und ß matcht.
use POSIX qw(locale_h);     # to be able to use setlocale()
#setlocale(LC_ALL,'de_DE');  
setlocale(LC_ALL, "fi_FI");  
use utf8;
use open qw( :std :encoding(UTF-8) );

use Time::Piece;
use Tie::IxHash;

#----------------------
# check file arguments:
#----------------------

# arg0 infile:   vrt-xml
# arg1 outfile:  tei

unless($ARGV[1]) {&usage_message()}; # min arg0 und arg1
if ($ARGV[2]) {&usage_message()};    # max arg1




####################
# GLOBAL VARIABLES 
####################

my $encoding = "UTF-8";               
#my $encoding = "iso-8859-1";             # dieses $encoding ist NUR fuer das output s.u. twig funktion
my $textcounter = 0;


#####################
#     M A I N  
#####################


# open result file and initialise filehandle
open(my $OUT, "> $ARGV[1]") || die("cannot open file: $ARGV[1]"); 



#-----------------------------------------------------------------------------------
# start twig and call start tag handler for root and twig handler for each <text>
#-----------------------------------------------------------------------------------

my $twig="";   

$twig = new XML::Twig(
    keep_spaces => 1,           # dadurch auch whitespaces an ehemeligen elementgrenzen im output
    keep_atts_order => 1,       # requires Tie::IxHash
    pretty_print => 'indented',
    start_tag_handlers => {
    	texts => \&root
    },
    twig_handlers =>  {
	text => \&text
    },
    # dtd_handlers =>   {       # ToDo for I5
    #	\&set_dtd;
    # }
    output_encoding => $encoding,
    );

$twig->parsefile($ARGV[0]);

close($OUT);


###########
# END MAIN
###########




##############################
#   S U B R O U T I N E S
##############################

# sub set_dtd [
#    my $twig, $dtd = @_;
#    my $internal = qq|\nPUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"\n"DTD/xhtml1-strict.dtd"|;
#
#    $twig->twig_doctype('html', undef, undef, $internal);
#    }



sub root {
    my ($twig, $root) =@_;

    $root->set_gi('teiCorpus');
    $root->set_att("xmlns", 'http://www.tei-c.org/ns/1.0');

    &insertCorpusHeader($root);    
}


sub insertCorpusHeader{
    my ($root) =@_;

    my @array = split(/\//, $ARGV[0]);
    my $l = scalar(@array);
    my $source = $array[$l-1];
    $source =~ s/\.xml//;
    $source = $source . " from klk-fi-v2-vrt";       # for the time being; TODO
    
    my $teiHeader        = $root           ->insert_new_elt("first_child", 'teiHeader');    
    my $fileDesc         = $teiHeader      ->insert_new_elt("last_child", 'fileDesc');
    my $profileDesc      = $teiHeader      ->insert_new_elt("last_child", 'profileDesc');
    
    my $titleStmt        = $fileDesc       ->insert_new_elt("last_child", 'titleStmt');
    my $title            = $titleStmt      ->insert_new_elt("last_child", 'title');
    $title               ->set_text($source . " from KLK-fi-2021 for EuReCo");
    
    my $publicationStmt  = $fileDesc       ->insert_new_elt("last_child", 'publicationStmt');
    my $distributor      = $publicationStmt->insert_new_elt("last_child", 'distributor');
    $distributor         ->set_text("NOT FOR DISTRIBUTION - to be used locally in EuReCo");

    my $sourceDesc       = $fileDesc       ->insert_new_elt("last_child", 'sourceDesc');
    my $bibl             = $sourceDesc     ->insert_new_elt("last_child", 'bibl');
    $bibl                ->set_text($source);

    my $langUsage        = $profileDesc    ->insert_new_elt("last_child", 'langUsage');
    my $language         = $langUsage      ->insert_new_elt("last_child", 'language');
    $language            ->set_att("ident",'fi');
    $language            ->set_text("Finnish");
}
    
    
#----------------------------
# handler &text for <text>
#----------------------------

sub text {
    my ($twig, $text) = @_;

    $textcounter++;               # global variable

    # ToDo: catch all other, unexpected children of root

    #--------------------------------------------------------------------------
    # Get text metadata (attributes of <text>) and create teiHeader for <text>
    #--------------------------------------------------------------------------
    
    my $textattsref = $text->atts();               # $textattsref is now a reference to a hash and should be used with '->'

    &createTextHeader($text, $textattsref);

    #--------------------------
    # create <TEI> from <text>
    #--------------------------
    
    # set vrt <text> to <TEI> and delete all attributes after they were were saved above
    $text->del_atts;
    $text->set_gi("TEI");
    
    #------------------------------------------------------------------
    # create the <tei:text>, <body>, <div> elements inside <TEI>
    #------------------------------------------------------------------
    
    my $ttext_element = XML::Twig::Elt->new('text');
    my $body_element  = XML::Twig::Elt->new('body');
    my $div_element   = XML::Twig::Elt->new('div');

    # set atts
    $div_element  ->set_att("type", "page");                          # ToDo: this is specific to KLK
    $ttext_element->set_att("xml:lang", 'fi');                               # as in ICC-NOR

    # paste
    $ttext_element->paste('last_child',  $text);
    $body_element ->paste('last_child',  $ttext_element);
    $div_element  ->paste('last_child',  $body_element);

    
    #-------------------------------
    # create <p> from <paragraph>
    #-------------------------------
    
    my @paragraphs = $text->children( 'paragraph');

    foreach my $paragraph (@paragraphs) {
	
	&setP($paragraph);

	$paragraph->move('last_child', $div_element);
	
	
	#------------------------------
	# create <s> from <sentence>
	#------------------------------
	
	my @sentences = $paragraph->children('sentence');
	foreach my $sentence (@sentences) {

	    &setS($sentence);


	    #--------------------------------------
	    # create <w> (word) from each $line
	    #--------------------------------------
	    
	    my @lines = split(/\n+/, $sentence->xml_text);
	    $sentence->set_text("\n");

	    for my $line (@lines){                                 # Todo: Reihenfolge checken
		if($line ne "" ){
		    my $w_element = XML::Twig::Elt->new('w');
		    &createW($w_element, $line);
		    $w_element->paste('last_child', $sentence);
		}
	    } # end words
	} # end sentences
    } # end paragraphs

    $twig->flush($OUT);
}   # end texts


sub createTextHeader{
    my ($text, $textattsref) = @_;
    
    # USE 01 binding_id="2246025"
    # USE 02 date="2021-01-15"
    #     03 datefrom="20210115"
    #     04 dateto="20210115"
    #     05 elec_date="_"
    #     06 file=""
    # USE 07 filename_metadata="finclarin_siirto_k2021/0039-5552/2021/alto/2246025_0039-5552_2021-01-15_SK0221_mets.xml"
    # USE 08 filename_orig    ="finclarin_siirto_k2021/0039-5552/2021/alto/2246025_0039-5552_2021-01-15_SK0221_page-2021011502210030301.xml
    # USE 09 id="t-bcd0f3fa-bbd3dac4"
    #     10 img_url=""
    # USE 11 issue_date="15.01.2021"
    # USE 12 issue_no="SK0221"
    # USE 13 issue_title="Suomen Kuvalehti"
    # USE 14 label="Suomen Kuvalehti no. SK0221 15.01.2021"
    # USE 16 language="fi"
    # USE 17 page_id="p1"
    # USE 18 page_no="None"
    #     19 part_name="_"
    #     20 publ_id="0039-5552"
    #     21 publ_part=""
    # USE 22 publ_title="Suomen Kuvalehti" 
    # USE 23 publ_type="aikakausi"
    # USE 24 sentcount="70"
    # USE 25 sum_lang="|xxx:44|fin:23|eng:3|"
    #     26 timefrom="000000"
    #     27 timeto="235959"
    # USE 28 tokencount="304"
    #     29 version_added="KLK-fi-2021">


    my $BID          = $textattsref->{'binding_id'};
    my $DATE         = $textattsref->{'date'};
    my $METAFILENAME = $textattsref->{'filename_metadata'};    
    my $ORIGFILENAME = $textattsref->{'filename_orig'};
    my $ID           = $textattsref->{'id'};
    my $ISSUEDATE    = $textattsref->{'issue_date'};
    my $ISSUENO      = $textattsref->{'issue_no'};
    my $ISSUETITLE   = $textattsref->{'issue_title'};
    my $LABEL        = $textattsref->{'label'};
    my $LANGUAGE     = $textattsref->{'language'};
    my $PAGEID       = $textattsref->{'page_id'};
    my $PAGENO       = $textattsref->{'page_no'};
    my $PUBLTITLE    = $textattsref->{'publ_title'};
    my $PUBLTYPE     = $textattsref->{'publ_type'};
    my $SENTCOUNT    = $textattsref->{'sentcount'};
    my $SUMLANG      = $textattsref->{'sum_lang'};
    my $TOKENCOUNT   = $textattsref->{'tokencount'};

    
    #-----------------------------
    # Derived Metadata variables
    #-----------------------------

    my @datearray = split("-", $DATE);
    my @langarray = split("|", $SUMLANG);
    my @namearray = split(/[\.\/]/, $ORIGFILENAME);  # use $namearray[4] as ID for the page
    

    #-----------------------------------------------------------------------
    # CREATE text-teiHeader ACCORDING TO THE SKELETON in klk-header.tei.xml
    #-----------------------------------------------------------------------

    # create <teiHeader> inside <TEI>
    my $teiHeader = XML::Twig::Elt->new('teiHeader');
    $teiHeader->paste('first_child', $text);

    ## insert_new_elt is a combo of new and paste, cf. xml::twig docu:
    ## insert_new_elt ($opt_position, $gi, $opt_atts_hashref, @opt_content)
    
    my $fileDesc     = $teiHeader->insert_new_elt('fileDesc'                           => {n => "EuReCo_KLK-fi_" . $namearray[4]});
    my $encodingDesc = $teiHeader->insert_new_elt("last_child", 'encodingDesc');
    my $profileDesc  = $teiHeader->insert_new_elt("last_child", 'profileDesc');
    my $revisionDesc = $teiHeader->insert_new_elt("last_child", 'revisionDesc');

    #---------------------
    # fileDesc/titleStmt
    #---------------------
    my $titleStmt = $fileDesc ->insert_new_elt('titleStmt');
    my $title     = $titleStmt->insert_new_elt("last_child", 'title');
    my $respStmt  = $titleStmt->insert_new_elt("last_child", 'respStmt');
    my $resp      = $respStmt ->insert_new_elt("last_child", 'resp');
    my $name      = $respStmt ->insert_new_elt("last_child", 'name');

    # set texts for titleStmt
    # $title->set_text($LABEL . ", page " . $PAGENO);           # Achtung - PAGENO scheint meist "None" zu sein
    $title->set_text($LABEL . ", Text #" . $textcounter);    # at least for Suomen Kuvalehti
    $resp ->set_text("compiled by EuReCo");
    $name ->set_text("EuReCo: HL");

    #--------------------------
    # fileDesc/publicationStmt
    #--------------------------
    my $publicationStmt = $fileDesc       ->insert_new_elt("last_child", 'publicationStmt');
    my $distributor     = $publicationStmt->insert_new_elt("last_child", 'distributor');
    my $note            = $distributor    ->insert_new_elt("last_child", 'note');
    my $availability    = $publicationStmt->insert_new_elt("last_child", 'availability'); 
    my $licence         = $availability   ->insert_new_elt("last_child", 'licence');

    # set texts for publicationStmt
    $note   ->set_text("NOT FOR DISTRIBUTION - to be used locally in EuReCo");
    $licence->set_text("CLARIN-RES");  # TODO: Ausfuherlichere Licence info in KLK Metadata Record

    #------------------------------
    # fileDesc/sourceDesc/biblStruct
    #------------------------------
    my $sourceDesc = $fileDesc  ->insert_new_elt("last_child", 'sourceDesc');
    my $biblStruct   = $sourceDesc->insert_new_elt("last_child", 'biblStruct');

    # fileDesc/sourceDesc/biblStruct/analytic
    my $analytic                = $biblStruct->insert_new_elt("last_child", 'analytic');
    my $analytic_title          = $analytic->insert_new_elt("last_child", 'title'        => {type => "main"} );
#    my $analytic_date           = $analytic->insert_new_elt("last_child", 'date');
    my $analytic_date_year      = $analytic->insert_new_elt("last_child", 'date'         => {type => "year"});
    my $analytic_date_month     = $analytic->insert_new_elt("last_child", 'date'         => {type => "month"});
    my $analytic_date_day       = $analytic->insert_new_elt("last_child", 'date'         => {type => "day"});
    my $analytic_idno_pageid    = $analytic->insert_new_elt("last_child", 'idno'         => {type => "PAGEID"});
    my $analytic_idno_bindingid = $analytic->insert_new_elt("last_child", 'idno'         => {type => "BINDINGID"});
    my $analytic_idno_id        = $analytic->insert_new_elt("last_child", 'idno'         => {type => "ID"});
    my $analytic_idno_metafile  = $analytic->insert_new_elt("last_child", 'idno'         => {type => "KIELIPANKKI_METAFILENAME"});
    my $analytic_idno_origfile  = $analytic->insert_new_elt("last_child", 'idno'         => {type => "KIELIPANKKI_ORIGFILENAME"});
    my $analytic_textlang       = $analytic->insert_new_elt("last_child", 'textLang');

    # set texts for analytic
#    $analytic_title         ->set_text($LABEL . ", page " . $PAGENO);  # Achtung $PAGENO scheint meist "None zu sein"
    $analytic_title         ->set_text($LABEL . ", Text #" . $textcounter);  # Achtung $PAGENO scheint meist "None zu sein"
#    $analytic_date         ->set_text($DATE);
    $analytic_date_year     ->set_text($datearray[0]);
    $analytic_date_month    ->set_text($datearray[1]);
    $analytic_date_day      ->set_text($datearray[2]);
    $analytic_idno_pageid   ->set_text($PAGEID);
    $analytic_idno_bindingid->set_text($BID);
    $analytic_idno_id       ->set_text($ID);
    $analytic_idno_metafile ->set_text($METAFILENAME);
    $analytic_idno_origfile ->set_text($ORIGFILENAME);
    $analytic_textlang      ->set_text($LANGUAGE);

    #-------------------------------------    
    # fileDesc/sourceDesc/biblStruct/monogr
    #-------------------------------------
    my $monogr               = $biblStruct->insert_new_elt("last_child", 'monogr');
    my $monogr_title         = $monogr    ->insert_new_elt("last_child", 'title');
    my $imprint              = $monogr    ->insert_new_elt("last_child", 'imprint');   # imprint is needed for valididty
    my $pubPlace             = $imprint   ->insert_new_elt("last_child", 'pubPlace');  # imprint is needed for validity
    my $publisher            = $imprint   ->insert_new_elt("last_child", 'publisher'); # imprint is needed for validity
    my $biblScope_issuetitle = $monogr    ->insert_new_elt("last_child", 'biblScope'   => {unit => 'ISSUETITLE'} );
    my $biblScope_issueno    = $monogr    ->insert_new_elt("last_child", 'biblScope'   => {unit => 'ISSUENO'} );
    my $biblScope_issuedate  = $monogr    ->insert_new_elt("last_child", 'biblScope'   => {unit => 'ISSUEDATE'} );
    my $biblScope_pp         = $monogr    ->insert_new_elt("last_child", 'biblScope'   => {unit => 'PAGENO'} );      # Achtung PAGENO ist meist "None" ?

    # set texts for monogr
    $monogr_title        ->set_text($PUBLTITLE);
    $pubPlace            ->set_text("TODO");
    $pubPlace            ->set_att("key",'FI');
    $publisher           ->set_text("TODO");
    $biblScope_issuetitle->set_text($ISSUETITLE);
    $biblScope_issueno   ->set_text($ISSUENO);
    $biblScope_issuedate ->set_text($ISSUEDATE);
    $biblScope_pp        ->set_text($PAGENO);
 
    #---------------
    # encodingDesc
    #---------------
    my $tagsDecl     = $encodingDesc->insert_new_elt("last_child", 'tagsDecl');
    my $namespace    = $tagsDecl    ->insert_new_elt("last_child", 'namespace'    => {name => 'http://www.tei-c.org/ns/1.0'});
    my $tagUsage_s   = $namespace   ->insert_new_elt("last_child", 'tagUsage'     => {gi   => 's', occurs => $SENTCOUNT});
    my $tagUsage_w   = $namespace   ->insert_new_elt("last_child", 'tagUsage'     => {gi   => 'w', occurs => $TOKENCOUNT});
    
    #-------------
    # profileDesc
    #-------------
    my $langUsage   = $profileDesc ->insert_new_elt("last_child", 'langUsage');
    my $language    = $langUsage   ->insert_new_elt("last_child", 'language'      => {ident => $LANGUAGE, usage => $SUMLANG});
    # Achtung in @usage muss eigt. ein integer; am besten inhalt von SUMLANG aufdroeseln und mehrere <language> machen
    my $textClass   = $profileDesc ->insert_new_elt("last_child", 'textClass');
    my $classCode_fi   = $textClass   ->insert_new_elt("last_child", 'classCode' => {scheme       => "KLK_PUBLTYPE"});
#    my $classCode_en   = $textClass   ->insert_new_elt("last_child", 'classCode' => {scheme      => "KLK_PUBLTYPE_MAPPED"});

    #---------------------------
    # set texts for profileDesc
    #---------------------------
    $classCode_fi ->set_text($PUBLTYPE);
#    $classCode_en->set_text($PUBLTYPETRANSL);

    #---------------
    # revisionDesc
    #---------------
    my $change      = $revisionDesc ->insert_new_elt("last_child", 'change'       => {when => localtime->ymd('-'), who => 'HL'  });

    # set texts for revisionDesc
    $change->set_text("TEI version for EuReCo");


    ###################################
    # END OF CREATING TEIHEADER
    ###################################
    
}
                                                                                                                                                                                          
sub setP {
    my ($paragraph) = @_;
    
    $paragraph->set_gi('p');
    
    # <paragraph id="p-bcd0f3fa-bbd3dac4-815ead7a" sum_lang="|fin:1|">
    # atts of <paragraph>:
    #    @id        USE
    #    @sum_lang  USE: put in xml:lang and prefix the value with "x-" for private value
    
    $paragraph->set_att("xml:lang", "x-" . $paragraph->att("sum_lang"));
    $paragraph->del_att("sum_lang");
    $paragraph->change_att_name('id', 'xml:id');
}                                                                                                                                                                                       
sub setS {
    my ($sentence) = @_;
    
    $sentence->set_gi('s');
	    
    # the atts of <sentence>:
    #    USE   1 @id="s-bcd0f3fa-bbd3dac4-f7429090"
    #    USE   2 @lang="fin" -> xml:lang 
    #    ?     3 @lang_conf="0.6734853"> -> ToDo @cert ?	    
    
    # set attrs of <s>
    $sentence->set_att("xml:lang", $sentence->att("lang"));  # ToDo: convert the value / introduce a hash for lookup (input values: "fin", "xxx", ....)
    # $sentence->change_att_name('id', 'xml:id');            # nicht eindeutig
    $sentence->del_att('id');
    $sentence->del_att("lang");                         # replaced by xml:lang
    $sentence->del_att("lang_conf");                    # for the time being
    
}

sub createW {
    my ($w_element, $line) = @_;

    #---------------------------
    # Get the tags (=columns)
    #---------------------------
    
    my @tags = split(/\t/, $line);
    
    # set content of <w> i.e. the token
    $w_element->set_text($tags[0]);
    
    # vrt positional-attributes in corpus KLK:
    #  USE [0] word
    #  USE [1] ref  (id for reference of dephead)
    #  USE [2] lemma
    #  ?   [3] lemmacomp   (lemma with compound info - could go in @norm, as tag abuse?)
    #  USE [4] pos 
    #  USE [5] msd 
    #  USE [6] dephead
    #  USE [7] deprel 
    #      [8] content   (ocr-process)
    #      [9] vpos      (ocr-process)
    #     [10] ocr       (ocr-process)
    #     [11] cc        (ocr-process)
    #     [12] hyph      (ocr-process)
    #     [13] style     (ocr-process)
    #     [14] lex       (korp semantic disambiguation from G"oteborg)
    
    # set the attributes of <w>:
    $w_element->set_att("n",      $tags[1]);
    # $w_element->set_att("id",     "w_" . $namearray[4] . $sentence->att("xml:id") . "_" . $tags[1]);
    # so zusammengebaute ID ist auch nicht eindeutig...
    $w_element->del_att("id");
    $w_element->set_att("lemma",  $tags[2]);
    # $w_element->set_att("norm",   $tags[3]);  # tag abuse of @norm
    $w_element->set_att("pos",    $tags[4]);
    $w_element->set_att("msd",    $tags[5]);
#TMP    $w_element->set_att("head",   $tags[6]);
#TMP    $w_element->set_att("deprel", $tags[7]);
    
}
    
#################
## usage_message
#################


sub usage_message {
    print "   Usage:  ./vrt2tei.pl <file.vrt.xml> <outfile>\n";
    print "   <file.vrt.xml> is a VRT file converted to proper XML\n";
    exit;
}