In case anyone wants to know what it would look like, a Parse::RecDescent parser would be something like this:

#!/usr/bin/perl -w

use strict;

use Parse::RecDescent;

sub Parse::RecDescent::dispatch {
    my $self = shift();
    my ($key, $value) = @_;

    print "$key: ";
    if ( ref($value) eq 'ARRAY' ) { print join(", ", @$value); }
    else { print $value; }

    print "\n";
}

my $parser = new Parse::RecDescent << '__GRAMMAR__';
    Pil:        Title '{' NameTable Canvas Object(s) '}' /\Z/

    Title:      /^pageoutput-[^;]+;/

        # the name-table
    NameTable:  'name-table' '{' NTLine(s) '}'
    NTLine:     FileName FileType 'unix-filename' FileName
    FileName:   '"' /[^"]+/ '"'
    FileType:   'atex-itf' | 'eps'

        # the canvas
    Canvas:     'canvas' '{' Data '}'
                { print "============================= CANVAS\n"; }

        # the objects
    Object:     'object' '{' Data '}'
                { print "============================= OBJECT\n"; }

    Data:       KeyValue(s)

    KeyValue:   Key Value
                { $thisparser->dispatch( $item[1], $item[2] ); }

    Key:        /^\S+/

    Value:      '"' /[^"]+/ '"'     { $item[2]; }   |
                Number                              |
                '{' Array '}'       { $item[2]; }

    Array:      Number(s) |
                KeyValue(s)

    Number:     /\d+/

__GRAMMAR__


undef $/;
$parser->Pil(<STDIN>);
[download]

This is incomplete. What is left to do is to associate the various key/value pairs with their respective owners (either a 'canvas' or 'object'). If you try it out, note that an object's key/value pairs are printed before that object.

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