/usr/share/perl5/LaTeXML/Post/Writer.pm is in latexml 0.7.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | # /=====================================================================\ #
# |  LaTeXML::Post::Writer                                              | #
# | Write file to output                                                | #
# |=====================================================================| #
# | Part of LaTeXML:                                                    | #
# |  Public domain software, produced as part of work done by the       | #
# |  United States Government & not subject to copyright in the US.     | #
# |---------------------------------------------------------------------| #
# | Bruce Miller <bruce.miller@nist.gov>                        #_#     | #
# | http://dlmf.nist.gov/LaTeXML/                              (o o)    | #
# \=========================================================ooo==U==ooo=/ #
package LaTeXML::Post::Writer;
use strict;
use LaTeXML::Util::Pathname;
use LaTeXML::Common::XML;
use base qw(LaTeXML::Post);
use Encode;
sub new {
  my($class,%options)=@_;
  my $self = $class->SUPER::new(%options);
  $$self{format} = ($options{format}||'xml');
  $$self{omit_doctype}=1 if $options{omit_doctype};
  $self; }
sub process {
  my($self,$doc)=@_;
  my $xmldoc = $doc->getDocument;
  $doc->getDocument->removeInternalSubset if $$self{omit_doctype};
  my $root = $xmldoc->documentElement;
  $root->removeAttribute('xml:id')
    if ($root->getAttribute('xml:id')||'') eq  'TEMPORARY_DOCUMENT_ID';
  my $string = ($$self{format} eq 'html' ? $xmldoc->toStringHTML : $xmldoc->toString(1));
  if(my $destination = $doc->getDestination){
    $self->Progress($doc,"Writing $destination");
    pathname_mkdir($doc->getDestinationDirectory)
      or return die("Couldn't create directory ".$doc->getDestinationDirectory.": $!");
    open(OUT,">",$destination)
      or return die("Couldn't write $destination: $!");
    print OUT $string;
    close(OUT); }
  else {
    print $string; }
  $doc; }
# ================================================================================
1;
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