/usr/share/perl5/sgmlspl-specs/skel.pl is in sgmlspl 1.03ii-32.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# skel.pl: an SGMLSPL script for producing scripts (!!).
#
# Copyright (c) 1995 by David Megginson <dmeggins@aix1.uottawa.ca>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#
# Changes:
#
# $Log: skel.pl,v $
# Revision 1.4 1995/11/15 20:21:07 david
# Changed "use Output" to "use SGMLS::Output".
#
# Revision 1.3 1995/08/24 15:04:38 david
# Fixed commented-out 're' handler.
#
# Revision 1.2 1995/08/12 16:16:42 david
# Revised version for 1.01 distribution.
#
# Revision 1.1 1995/04/23 14:49:35 david
# Initial revision
#
########################################################################
use SGMLS;
use SGMLS::Output;
$version = '$Id: skel.pl,v 1.4 1995/11/15 20:21:07 david Exp $';
%subdocs = (); # Subdocument entities seen so far.
%entities = (); # External data entities seen so far.
%sdata = (); # SDATA strings seen so far.
%elements = (); # Elements seen so far.
$pi = 0; # Any processing instructions?
$intro = 0; # Have we printed the banner yet?
$| = 1;
sgml('end_element', ''); # Ignore the ends of elements.
sgml('end_subdoc', ''); # Ignore the ends of subdocument entities.
sgml('cdata', ''); # Ignore CDATA.
sgml('re', ''); # Ignore Record Ends.
# Note any processing instructions.
sgml('pi', sub { $pi = 1; });
# Keep track of all subdocument entities.
sgml('start_subdoc', sub {
my $entity = shift;
$entities{$entity->name} = 1;
});
# Keep track of all external data entities.
sgml('entity', sub {
my $entity = shift;
$entities{$entity->name} = 1;
});
# Keep track of all SDATA strings
sgml('sdata', sub {
my $sdata = shift;
$sdata{$sdata} = 1;
});
# Display element handlers as they appear.
sgml('start_element', sub {
my $element = shift;
unless ($intro) {
$intro = 1;
do_intro($element->name);
}
if (!$elements{$element->name}) {
output "# Element: " . $element->name . "\n";
output "sgml('<" . $element->name . ">', \"\");\n";
output "sgml('</" . $element->name . ">', \"\");\n\n";
$elements{$element->name} = 1;
}
});
sgml('end', sub {
# generate subdoc handlers
my @keys = keys(%subdocs);
if ($#keys > 0) {
output "#\n# Subdocument Entity Handlers\n#\n\n";
foreach (@keys) {
output "# Subdocument Entity: $_\n";
output "sgml('{" . $_ . "}', \"\");\n";
output "sgml('{/" . $_ . "}', \"\");\n\n";
}
}
# generate entity handlers
my @keys = keys(%entities);
if ($#keys > 0) {
output "#\n# External Data Entity Handlers\n#\n\n";
foreach (@keys) {
output "sgml('&" . $_ . ";', \"\");\n";
}
}
# generate sdata handlers
my @keys = keys(%sdata);
if ($#keys > 0) {
output "#\n# SDATA Handlers\n#\n\n";
foreach (@keys) {
output "sgml('|" . $_ . "|', \"\");\n";
}
}
if ($pi) {
output "#\n# Processing-Instruction Handler\n#\n";
output "sgml('pi', sub {});\n\n";
}
output <<END;
#
# Default handlers (uncomment these if needed). Right now, these are set
# up to gag on any unrecognised elements, sdata, processing-instructions,
# or entities.
#
# sgml('start_element',sub { die "Unknown element: " . \$_[0]->name; });
# sgml('end_element','');
# sgml('cdata',sub { output \$_[0]; });
# sgml('sdata',sub { die "Unknown SDATA: " . \$_[0]; });
# sgml('re',"\\n");
# sgml('pi',sub { die "Unknown processing instruction: " . \$_[0]; });
# sgml('entity',sub { die "Unknown external entity: " . \$_[0]->name; });
# sgml('start_subdoc',sub { die "Unknown subdoc entity: " . \$_[0]->name; });
# sgml('end_subdoc','');
# sgml('conforming','');
1;
END
});
# Function to print the banner.
sub do_intro {
my $doctype = shift;
output <<END;
########################################################################
# SGMLSPL script produced automatically by the script sgmlspl.pl
#
# Document Type: $doctype
# Edited by:
########################################################################
use SGMLS; # Use the SGMLS package.
use SGMLS::Output; # Use stack-based output.
#
# Document Handlers.
#
sgml('start', sub {});
sgml('end', sub {});
#
# Element Handlers.
#
END
}
1;
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