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#!/usr/bin/perl -ws
use Parse::RecDescent;
my $parser = new Parse::RecDescent q
{
components: ganglia(s)
ganglia: 'ganglia' '{' cell(s) '}'
cell: 'cell' '{' synapse(s) '}'
synapse: 'synapse' '{' WHATEVER '}'
WHATEVER: /\d\.\d\.\d/ # OBVIOUSLY REPLACE THIS WITH WHATEVER :-)
<defer: print "$item[1]\n" >
} or die "Bad grammar!\n";
my $text = '';
getnextchunk($text) # GET FIRST CHUNK OF DATA
or die "No data!\n";
$text =~ s/\s*define\s*NetworkDetails\s*{// # EAT OUTERMOST OPENING BRACKET
or die "Bad data! (expected 'define...')";
do
{
$parser->components(\$text); # TRY TO EAT GANGLIA
}
while (getnextchunk($text)); # APPEND THE NEXT CHUNK
$text =~ m/\s*}/ # CHECK FOR THE OUTERMOST CLOSING BRACKET
or die "Unclosed 'define' (missing '}')!";
sub getnextchunk # APPEND SOME MORE TEXT TO THE FIRST ARG
{
my $wasmore = 0;
for (1..10) # OPTIMALLY, ONE LINE BIGGER THAN THE LARGEST
# SINGLE GANGLIA DEFINITION, BUT ANY NUMBER
# OF LINES WILL DO
{
my $nextline = <DATA>;
defined $nextline or last;
$_[0] .= $nextline;
$wasmore++
}
return $wasmore;
}
__DATA__
define NetworkDetails
{
ganglia {
cell {
synapse { 1.1.1 }
synapse { 1.1.2 }
synapse { 1.1.3 }
synapse { 1.1.4 }
synapse { 1.1.5 }
}
cell {
synapse { 1.2.1 }
synapse { 1.2.2 }
synapse { 1.2.3 }
synapse { 1.2.4 }
synapse { 1.2.5 }
}
cell {
synapse { 1.3.1 }
synapse { 1.3.2 }
synapse { 1.3.3 }
synapse { 1.3.4 }
synapse { 1.3.5 }
}
cell {
synapse { 1.4.1 }
synapse { 1.4.2 }
synapse { 1.4.3 }
synapse { 1.4.4 }
synapse { 1.4.5 }
}
}
ganglia {
cell {
synapse { 2.1.1 }
synapse { 2.1.2 }
synapse { 2.1.3 }
synapse { 2.1.4 }
synapse { 2.1.5 }
}
cell {
synapse { 2.2.1 }
synapse { 2.2.2 }
synapse { 2.2.3 }
synapse { 2.2.4 }
synapse { 2.2.5 }
}
cell {
synapse { 2.3.1 }
synapse { 2.3.2 }
synapse { 2.3.3 }
synapse { 2.3.4 }
synapse { 2.3.5 }
}
cell {
synapse { 2.4.1 }
synapse { 2.4.2 }
synapse { 2.4.3 }
synapse { 2.4.4 }
synapse { 2.4.5 }
}
}
ganglia {
cell {
synapse { 3.1.1 }
synapse { 3.1.2 }
synapse { 3.1.3 }
synapse { 3.1.4 }
synapse { 3.1.5 }
}
cell {
synapse { 3.2.1 }
synapse { 3.2.2 }
synapse { 3.2.3 }
synapse { 3.2.4 }
synapse { 3.2.5 }
}
cell {
synapse { 3.3.1 }
synapse { 3.3.2 }
synapse { 3.3.3 }
synapse { 3.3.4 }
synapse { 3.3.5 }
}
cell {
synapse { 3.4.1 }
synapse { 3.4.2 }
synapse { 3.4.3 }
synapse { 3.4.4 }
synapse { 3.4.5 }
}
}
ganglia {
cell {
synapse { 4.1.1 }
synapse { 4.1.2 }
synapse { 4.1.3 }
synapse { 4.1.4 }
synapse { 4.1.5 }
}
cell {
synapse { 4.2.1 }
synapse { 4.2.2 }
synapse { 4.2.3 }
synapse { 4.2.4 }
synapse { 4.2.5 }
}
cell {
synapse { 4.3.1 }
synapse { 4.3.2 }
synapse { 4.3.3 }
synapse { 4.3.4 }
synapse { 4.3.5 }
}
cell {
synapse { 4.4.1 }
synapse { 4.4.2 }
synapse { 4.4.3 }
synapse { 4.4.4 }
synapse { 4.4.5 }
}
}
}