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248 lines
6.0 KiB
Perl
248 lines
6.0 KiB
Perl
#
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# the dx spot handler
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#
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# Copyright (c) - 1998 Dirk Koopman G1TLH
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#
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# $Id$
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#
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package Spot;
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use IO::File;
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use DXVars;
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use DXDebug;
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use DXUtil;
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use DXLog;
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use Julian;
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use Prefix;
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use strict;
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use vars qw($fp $maxspots $defaultspots $maxdays $dirprefix %dup $duplth $dupage);
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$fp = undef;
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$maxspots = 50; # maximum spots to return
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$defaultspots = 10; # normal number of spots to return
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$maxdays = 35; # normal maximum no of days to go back
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$dirprefix = "spots";
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%dup = (); # the spot duplicates hash
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$duplth = 20; # the length of text to use in the deduping
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$dupage = 3*3600; # the length of time to hold spot dups
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sub init
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{
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mkdir "$dirprefix", 0777 if !-e "$dirprefix";
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$fp = DXLog::new($dirprefix, "dat", 'd');
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}
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sub prefix
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{
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return $fp->{prefix};
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}
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# add a spot to the data file (call as Spot::add)
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sub add
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{
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my @spot = @_; # $freq, $call, $t, $comment, $spotter = @_
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my @out = @spot[0..4]; # just up to the spotter
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# normalise frequency
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$spot[0] = sprintf "%.f", $spot[0];
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# remove ssids if present on spotter
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$out[4] =~ s/-\d+$//o;
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# remove leading and trailing spaces
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$spot[3] = unpad($spot[3]);
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# add the 'dxcc' country on the end for both spotted and spotter, then the cluster call
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my @dxcc = Prefix::extract($out[1]);
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my $spotted_dxcc = (@dxcc > 0 ) ? $dxcc[1]->dxcc() : 0;
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my $spotted_itu = (@dxcc > 0 ) ? $dxcc[1]->itu() : 0;
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my $spotted_cq = (@dxcc > 0 ) ? $dxcc[1]->cq() : 0;
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push @out, $spotted_dxcc;
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@dxcc = Prefix::extract($out[4]);
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my $spotter_dxcc = (@dxcc > 0 ) ? $dxcc[1]->dxcc() : 0;
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my $spotter_itu = (@dxcc > 0 ) ? $dxcc[1]->itu() : 0;
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my $spotter_cq = (@dxcc > 0 ) ? $dxcc[1]->cq() : 0;
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push @out, $spotter_dxcc;
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push @out, $spot[5];
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my $buf = join("\^", @out);
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# compare dates to see whether need to open another save file (remember, redefining $fp
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# automagically closes the output file (if any)).
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$fp->writeunix($out[2], $buf);
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return (@out, $spotted_itu, $spotted_cq, $spotter_itu, $spotter_cq);
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}
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# search the spot database for records based on the field no and an expression
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# this returns a set of references to the spots
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#
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# the expression is a legal perl 'if' statement with the possible fields indicated
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# by $f<n> where :-
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#
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# $f0 = frequency
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# $f1 = call
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# $f2 = date in unix format
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# $f3 = comment
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# $f4 = spotter
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# $f5 = spotted dxcc country
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# $f6 = spotter dxcc country
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# $f7 = origin
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#
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#
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# In addition you can specify a range of days, this means that it will start searching
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# from <n> days less than today to <m> days less than today
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#
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# Also you can select a range of entries so normally you would get the 0th (latest) entry
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# back to the 5th latest, you can specify a range from the <x>th to the <y>the oldest.
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#
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# This routine is designed to be called as Spot::search(..)
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#
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sub search
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{
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my ($expr, $dayfrom, $dayto, $from, $to) = @_;
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my $eval;
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my @out;
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my $ref;
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my $i;
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my $count;
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my @today = Julian::unixtoj(time());
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my @fromdate;
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my @todate;
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$dayfrom = 0 if !$dayfrom;
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$dayto = $maxdays if !$dayto;
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@fromdate = Julian::sub(@today, $dayfrom);
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@todate = Julian::sub(@fromdate, $dayto);
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$from = 0 unless $from;
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$to = $defaultspots unless $to;
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$to = $from + $maxspots if $to - $from > $maxspots || $to - $from <= 0;
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$expr =~ s/\$f(\d)/\$ref->[$1]/g; # swap the letter n for the correct field name
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# $expr =~ s/\$f(\d)/\$spots[$1]/g; # swap the letter n for the correct field name
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dbg("search", "expr='$expr', spotno=$from-$to, day=$dayfrom-$dayto\n");
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# build up eval to execute
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$eval = qq(
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my \$c;
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my \$ref;
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for (\$c = \$#spots; \$c >= 0; \$c--) {
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\$ref = \$spots[\$c];
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if ($expr) {
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\$count++;
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next if \$count < \$from; # wait until from
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push(\@out, \$ref);
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last if \$count >= \$to; # stop after to
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}
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}
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);
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$fp->close; # close any open files
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for ($i = $count = 0; $i < $maxdays; ++$i) { # look thru $maxdays worth of files only
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my @now = Julian::sub(@fromdate, $i); # but you can pick which $maxdays worth
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last if Julian::cmp(@now, @todate) <= 0;
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my @spots = ();
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my $fh = $fp->open(@now); # get the next file
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if ($fh) {
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my $in;
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while (<$fh>) {
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chomp;
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push @spots, [ split '\^' ];
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}
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eval $eval; # do the search on this file
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last if $count >= $to; # stop after to
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return ("Spot search error", $@) if $@;
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}
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}
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return @out;
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}
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# format a spot for user output in 'broadcast' mode
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sub formatb
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{
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my @dx = @_;
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my $t = ztime($dx[2]);
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my $ref = DXUser->get_current($dx[4]);
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my $loc = $ref->qra if $ref && $ref->qra;
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$loc = ' ' . substr($ref->qra, 0, 4) if $loc;
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$loc = "" unless $loc;
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return sprintf "DX de %-7.7s%11.1f %-12.12s %-30s %s$loc", "$dx[4]:", $dx[0], $dx[1], $dx[3], $t ;
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}
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# format a spot for user output in list mode
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sub formatl
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{
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my @dx = @_;
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my $t = ztime($dx[2]);
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my $d = cldate($dx[2]);
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return sprintf "%8.1f %-11s %s %s %-28.28s%7s>", $dx[0], $dx[1], $d, $t, $dx[3], "<$dx[4]" ;
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}
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#
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# return all the spots from a day's file as an array of references
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# the parameter passed is a julian day
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sub readfile
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{
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my @spots;
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my $fh = $fp->open(@_);
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if ($fh) {
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my $in;
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while (<$fh>) {
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chomp;
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push @spots, [ split '\^' ];
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}
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}
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return @spots;
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}
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# enter the spot for dup checking and return true if it is already a dup
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sub dup
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{
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my ($freq, $call, $d, $text) = @_;
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# dump if too old
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return 2 if $d < $main::systime - $dupage;
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$freq = sprintf "%.1f", $freq; # normalise frequency
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chomp $text;
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$text = substr($text, 0, $duplth) if length $text > $duplth;
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unpad($text);
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my $dupkey = "$freq|$call|$d|$text";
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return 1 if exists $dup{$dupkey};
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$dup{$dupkey} = $d * 60; # in seconds (to the nearest minute)
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return 0;
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}
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# called every hour and cleans out the dup cache
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sub process
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{
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my $cutoff = $main::systime - $dupage;
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while (my ($key, $val) = each %dup) {
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delete $dup{$key} if $val < $cutoff;
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}
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}
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sub listdups
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{
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my @out;
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for (sort { $dup{$a} <=> $dup{$b} } keys %dup) {
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my $val = $dup{$_};
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push @out, "$_ = $val (" . cldatetime($val) . ")";
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}
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return @out;
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}
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1;
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