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#!/usr/bin/perl
use warnings;
#
#
# split_gnis.pl -- 2004 Mar 15 -- jmt@twilley.org
# This script is designed to break large GNIS datapoint files
# into smaller chunks and will dispose of extra whitespace properly.
# It is based on a bash script written by kc9asi@arrl.net.
# The filenames used as input should be put on the command line.
while (<>) {
next unless /[A-Z][a-z]/;
s/\s+$//;
my $line = $_;
my @fields = split /\|/, $line;
# print "Fields is @fields\n";
# key is "state county"
my $key = $fields[1] . " " . $fields[4];
$key =~ s/ /_/g;
push @{$county{$key}}, $line;
}
foreach $elem (keys %county) {
my $name = $elem . ".gnis";
open(OUT,">$name");
foreach $line (@{$county{$elem}}) {
print OUT $line, "\n";
}
close(OUT);
}
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