perl/Spot.pm

   1 #
   2 # the dx spot handler
   3 #
   4 # Copyright (c) - 1998 Dirk Koopman G1TLH
   5 #
   6 #
   7 #
   8
   9 package Spot;
  10
  11 use IO::File;
  12 use DXVars;
  13 use DXDebug;
  14 use DXUtil;
  15 use DXLog;
  16 use Julian;
  17 use Prefix;
  18 use DXDupe;
  19 use Data::Dumper;
  20 use QSL;
  21 use DXSql;
  22 use Time::HiRes qw(gettimeofday tv_interval);
  23 use Math::Round qw(nearest nearest_floor);
  24
  25 use strict;
  26
  27 use vars qw($fp $statp $maxspots $defaultspots $maxdays $dirprefix $duplth $dupage $filterdef
  28                         $totalspots $hfspots $vhfspots $maxcalllth $can_encode $use_db_for_search);
  29
  30 $fp = undef;
  31 $statp = undef;
  32 $maxspots = 100;                                        # maximum spots to return
  33 $defaultspots = 10;                             # normal number of spots to return
  34 $maxdays = 100;                         # normal maximum no of days to go back
  35 $dirprefix = "spots";
  36 $duplth = 20;                                   # the length of text to use in the deduping
  37 $dupage = 1*3600;               # the length of time to hold spot dups
  38 $maxcalllth = 12;                               # the max length of call to take into account for dupes
  39 $filterdef = bless ([
  40                                          # tag, sort, field, priv, special parser
  41                                          ['freq', 'r', 0, 0, \&decodefreq],
  42                                          ['on', 'r', 0, 0, \&decodefreq],
  43                                          ['call', 'c', 1],
  44                                          ['info', 't', 3],
  45                                          ['spotter', 'c', 4],
  46                                          ['by', 'c', 4],
  47                                          ['dxcc', 'nc', 5],
  48                                          ['call_dxcc', 'nc', 5],
  49                                          ['by_dxcc', 'nc', 6],
  50                                          ['origin', 'c', 7, 9],
  51                                          ['call_itu', 'ni', 8],
  52                                          ['itu', 'ni', 8],
  53                                          ['call_zone', 'nz', 9],
  54                                          ['cq', 'nz', 9],
  55                                          ['zone', 'nz', 9],
  56                                          ['by_itu', 'ni', 10],
  57                                          ['byitu', 'ni', 10],
  58                                          ['by_zone', 'nz', 11],
  59                                          ['byzone', 'nz', 11],
  60                                          ['bycq', 'nz', 11],
  61                                          ['call_state', 'ns', 12],
  62                                          ['state', 'ns', 12],
  63                                          ['by_state', 'ns', 13],
  64                                          ['bystate', 'ns', 13],
  65                                          ['ip', 'c', 14],
  66 #                                        ['channel', 'c', 15],
  67 #                                        ['rbn', 'a', 4, 0, \&filterrbnspot],
  68                                         ], 'Filter::Cmd');
  69 $totalspots = $hfspots = $vhfspots = 0;
  70 $use_db_for_search = 0;
  71
  72 our %spotcache;                                 # the cache of data within the last $spotcachedays 0 or 2+ days
  73 our $spotcachedays = 2;                 # default 2 days worth
  74 our $minselfspotqrg = 1240000;  # minimum freq above which self spotting is allowed
  75
  76 our $readback = $main::is_win ? 0 : 1; # don't read spot files backwards if it's windows
  77 our $qrggranularity = 1000;     # normalise the qrg to this number of hz (default: 100khz), so tough luck if you have a fumble fingers moment
  78 our $timegranularity = 600;             # ditto to the nearest 100 seconds
  79 our $oldstyle = 0;                              # revert to traditional dupe key format
  80
  81
  82 if ($readback) {
  83         $readback = `which tac`;
  84         chomp $readback;
  85 }
  86
  87 # create a Spot Object
  88 sub new
  89 {
  90         my $class = shift;
  91         my $self = [ @_ ];
  92         return bless $self, $class;
  93 }
  94
  95 sub decodefreq
  96 {
  97         my $dxchan = shift;
  98         my $l = shift;
  99         my @f = split /,/, $l;
 100         my @out;
 101         my $f;
 102
 103         foreach $f (@f) {
 104                 my ($a, $b);
 105                 if ($f =~ m{^\d+/\d+$}) {
 106                         push @out, $f;
 107                 } elsif (($a, $b) = $f =~ m{^(\w+)(?:/(\w+))?$}) {
 108                         $b = lc $b if $b;
 109                         my @fr = Bands::get_freq(lc $a, $b);
 110                         if (@fr) {
 111                                 while (@fr) {
 112                                         $a = shift @fr;
 113                                         $b = shift @fr;
 114                                         push @out, "$a/$b";  # add them as ranges
 115                                 }
 116                         } else {
 117                                 return ('dfreq', $dxchan->msg('dfreq1', $f));
 118                         }
 119                 } else {
 120                         return ('dfreq', $dxchan->msg('e20', $f));
 121                 }
 122         }
 123         return (0, join(',', @out));
 124 }
 125
 126 # filter setup for rbn spot so return the regex to detect it
 127 sub filterrbnspot
 128 {
 129         my $dxchan = shift;
 130         return ('-#$');
 131 }
 132
 133 sub init
 134 {
 135         mkdir "$dirprefix", 0777 if !-e "$dirprefix";
 136         $fp = DXLog::new($dirprefix, "dat", 'd');
 137         $statp = DXLog::new($dirprefix, "dys", 'd');
 138         my $today = Julian::Day->new(time);
 139
 140         # load up any old spots
 141         if ($main::dbh) {
 142                 unless (grep $_ eq 'spot', $main::dbh->show_tables) {
 143                         dbg('initialising spot tables');
 144                         my $t = time;
 145                         my $total;
 146                         $main::dbh->spot_create_table;
 147
 148                         my $now = Julian::Day->alloc(1995, 0);
 149                         my $sth = $main::dbh->spot_insert_prepare;
 150                         while ($now->cmp($today) <= 0) {
 151                                 my $fh = $fp->open($now);
 152                                 if ($fh) {
 153 #                                       $main::dbh->{RaiseError} = 0;
 154                                         $main::dbh->begin_work;
 155                                         my $count = 0;
 156                                         while (<$fh>) {
 157                                                 chomp;
 158                                                 my @s = split /\^/;
 159                                                 if (@s < 14) {
 160                                                         my @a = (Prefix::cty_data($s[1]))[1..3];
 161                                                         my @b = (Prefix::cty_data($s[4]))[1..3];
 162                                                         push @s, $b[1] if @s < 7;
 163                                                         push @s, '' if @s < 8;
 164                                                         push @s, @a[0,1], @b[0,1] if @s < 12;
 165                                                         push @s,  $a[2], $b[2] if @s < 14;
 166                                                 }
 167                                                 $main::dbh->spot_insert(\@s, $sth);
 168                                                 $count++;
 169                                         }
 170                                         $main::dbh->commit;
 171                                         dbg("inserted $count spots from $now->[0] $now->[1]");
 172                                         $fh->close;
 173                                         $total += $count;
 174                                 }
 175                                 $now = $now->add(1);
 176                         }
 177                         $main::dbh->begin_work;
 178                         $main::dbh->spot_add_indexes;
 179                         $main::dbh->commit;
 180 #                       $main::dbh->{RaiseError} = 1;
 181                         $t = time - $t;
 182                         my $min = int($t / 60);
 183                         my $sec = $t % 60;
 184                         dbg("$total spots converted in $min:$sec");
 185                 }
 186                 unless ($main::dbh->has_ipaddr) {
 187                         $main::dbh->add_ipaddr;
 188                         dbg("added ipaddr field to spot table");
 189                 }
 190         }
 191
 192         # initialise the cache if required
 193         if ($spotcachedays > 0) {
 194                 my $t0 = [gettimeofday];
 195                 $spotcachedays = 2 if $spotcachedays < 2;
 196                 dbg "Spot::init - reading in $spotcachedays days of spots into cache";
 197                 for (my $i = 0; $i < $spotcachedays; ++$i) {
 198                         my $now = $today->sub($i);
 199                         my $fh = $fp->open($now);
 200                         if ($fh) {
 201                                 my @in;
 202                                 my $rec;
 203                                 for ($rec = 0; <$fh>; ++$rec) {
 204                                         chomp;
 205                                         my @s = split /\^/;
 206                                         if (@s < 14) {
 207                                                 my @a = (Prefix::cty_data($s[1]))[1..3];
 208                                                 my @b = (Prefix::cty_data($s[4]))[1..3];
 209                                                 push @s, $b[1] if @s < 7;
 210                                                 push @s, '' if @s < 8;
 211                                                 push @s, @a[0,1], @b[0,1] if @s < 12;
 212                                                 push @s,  $a[2], $b[2] if @s < 14;
 213                                         }
 214                                         unshift @in, \@s;
 215                                 }
 216                                 $fh->close;
 217                                 dbg("Spot::init read $rec spots from " . _cachek($now));
 218                                 $spotcache{_cachek($now)} = \@in;
 219                         }
 220                         $now->add(1);
 221                 }
 222                 dbg("Spot::init $spotcachedays files of spots read into cache in " . _diffms($t0) . "mS")
 223         }
 224 }
 225
 226 sub prefix
 227 {
 228         return $fp->{prefix};
 229 }
 230
 231 # fix up the full spot data from the basic spot data
 232 # input is
 233 # freq, call, time, comment, spotter, origin[, ip_address]
 234 sub prepare
 235 {
 236         # $freq, $call, $t, $comment, $spotter, node, ip address = @_
 237         my @out = @_[0..4];      # just up to the spotter
 238
 239         # normalise frequency
 240         $out[0] = sprintf "%.1f", $out[0];
 241
 242         # remove ssids and /xxx if present on spotter
 243         $out[4] =~ s/-\d+$//o;
 244
 245         # remove leading and trailing spaces from comment field
 246         $out[3] = unpad($out[3]);
 247
 248         # add the 'dxcc' country on the end for both spotted and spotter, then the cluster call
 249         my @spd = Prefix::cty_data($out[1]);
 250         push @out, $spd[0];
 251         my @spt = Prefix::cty_data($out[4]);
 252         push @out, $spt[0];
 253         push @out, $_[5];
 254         push @out, @spd[1,2], @spt[1,2], $spd[3], $spt[3];
 255         push @out, $_[6] if $_[6] && is_ipaddr($_[6]);
 256
 257         # thus we now have:
 258         # freq, call, time, comment, spotter, call country code, spotter country code, origin, call itu, call cqzone, spotter itu, spotter cqzone, call state, spotter state, spotter ip address
 259         return @out;
 260 }
 261
 262 sub add
 263 {
 264         my $buf = join('^', @_);
 265         $fp->writeunix($_[2], $buf);
 266         if ($spotcachedays > 0) {
 267                 my $now = Julian::Day->new($_[2]);
 268                 my $day = _cachek($now);
 269                 my $r = (exists $spotcache{$day}) ? $spotcache{$day} : ($spotcache{$day} = []);
 270                 unshift @$r, \@_;
 271         }
 272         if ($main::dbh) {
 273                 $main::dbh->begin_work;
 274                 $main::dbh->spot_insert(\@_);
 275                 $main::dbh->commit;
 276         }
 277         $totalspots++;
 278         if ($_[0] <= 30000) {
 279                 $hfspots++;
 280         } else {
 281                 $vhfspots++;
 282         }
 283         if ($_[3] =~ /(?:QSL|VIA)/i) {
 284                 my $q = QSL::get($_[1]) || new QSL $_[1];
 285                 $q->update($_[3], $_[2], $_[4]);
 286         }
 287 }
 288
 289 # search the spot database for records based on the field no and an expression
 290 # this returns a set of references to the spots
 291 #
 292 # the expression is a legal perl 'if' statement with the possible fields indicated
 293 # by $f<n> where :-
 294 #
 295 #   $f0 = frequency
 296 #   $f1 = call
 297 #   $f2 = date in unix format
 298 #   $f3 = comment
 299 #   $f4 = spotter
 300 #   $f5 = spotted dxcc country
 301 #   $f6 = spotter dxcc country
 302 #   $f7 = origin
 303 #   $f8 = spotted itu
 304 #   $f9 = spotted cq zone
 305 #   $f10 = spotter itu
 306 #   $f11 = spotter cq zone
 307 #   $f12 = spotted us state
 308 #   $f13 = spotter us state
 309 #   $f14 = ip address
 310 #
 311 # In addition you can specify a range of days, this means that it will start searching
 312 # from <n> days less than today to <m> days less than today
 313 #
 314 # Also you can select a range of entries so normally you would get the 0th (latest) entry
 315 # back to the 5th latest, you can specify a range from the <x>th to the <y>the oldest.
 316 #
 317 # This routine is designed to be called as Spot::search(..)
 318 #
 319
 320 sub search
 321 {
 322         my ($expr, $dayfrom, $dayto, $from, $to, $hint, $dofilter, $dxchan) = @_;
 323         my @out;
 324         my $ref;
 325         my $i;
 326         my $count;
 327         my $today = Julian::Day->new(time());
 328         my $fromdate;
 329         my $todate;
 330
 331         $dayfrom = 0 if !$dayfrom;
 332         $dayto = $maxdays unless $dayto;
 333         $dayto = $dayfrom + $maxdays if $dayto < $dayfrom;
 334         $fromdate = $today->sub($dayfrom);
 335         $todate = $fromdate->sub($dayto);
 336         $from = 0 unless $from;
 337         $to = $defaultspots unless $to;
 338         $hint = $hint ? "next unless $hint" : "";
 339         $expr = "1" unless $expr;
 340
 341         $to = $from + $maxspots if $to - $from > $maxspots || $to - $from <= 0;
 342
 343         if ($main::dbh && $use_db_for_search) {
 344                 return $main::dbh->spot_search($expr, $dayfrom, $dayto, $from, $to, $hint, $dofilter, $dxchan);
 345         }
 346
 347         #       $expr =~ s/\$f(\d\d?)/\$ref->[$1]/g; # swap the letter n for the correct field name
 348         #  $expr =~ s/\$f(\d)/\$spots[$1]/g;               # swap the letter n for the correct field name
 349
 350
 351         dbg("Spot::search hint='$hint', expr='$expr', spotno=$from-$to, day=$dayfrom-$dayto\n") if isdbg('search');
 352
 353         # build up eval to execute
 354
 355         dbg("Spot::search Spot eval: $expr") if isdbg('searcheval');
 356         $expr =~ s/\$r/\$_[0]/g;
 357         my $eval = qq{ sub { return $expr; } };
 358         dbg("Spot::search Spot eval: $eval") if isdbg('searcheval');
 359         my $ecode = eval $eval;
 360         return ("Spot search error", $@) if $@;
 361
 362         my $fh;
 363         my $now = $fromdate;
 364         my $today = Julian::Day->new($main::systime);
 365
 366         for ($i = $count = 0; $count < $to && $i < $maxdays; ++$i) { # look thru $maxdays worth of files only
 367                 last if $now->cmp($todate) <= 0;
 368
 369
 370                 my $this = $now->sub($i);
 371                 my $fn = $fp->fn($this);
 372                 my $cachekey = _cachek($this);
 373                 my $rec = 0;
 374
 375                 if ($spotcachedays > 0 && $spotcache{$cachekey}) {
 376                         foreach my $r (@{$spotcache{$cachekey}}) {
 377                                 ++$rec;
 378                                 if ($dofilter && $dxchan && $dxchan->{spotsfilter}) {
 379                                         my ($gotone, undef) = $dxchan->{spotsfilter}->it(@$r);
 380                                         next unless $gotone;
 381                                 }
 382                                 if (&$ecode($r)) {
 383                                         ++$count;
 384                                         next if $count < $from;
 385                                         push @out, $r;
 386                                         last if $count >= $to;
 387                                 }
 388                         }
 389                         dbg("Spot::search cache recs read: $rec") if isdbg('search');
 390                 } else {
 391                         if ($readback) {
 392                                 dbg("Spot::search search using tac fn: $fn $i") if isdbg('search');
 393                                 $fh = IO::File->new("$readback $fn |");
 394                         }
 395                         else {
 396                                 dbg("Spot::search search fn: $fp->{fn} $i") if isdbg('search');
 397                                 $fh = $fp->open($now->sub($i)); # get the next file
 398                         }
 399                         if ($fh) {
 400                                 my $in;
 401                                 while (<$fh>) {
 402                                         chomp;
 403                                         my @r = split /\^/;
 404                                         ++$rec;
 405                                         if ($dofilter && $dxchan && $dxchan->{spotsfilter}) {
 406                                                 my ($gotone, undef) = $dxchan->{spotsfilter}->it(@r);
 407                                                 next unless $gotone;
 408                                         }
 409                                         if (&$ecode(\@r)) {
 410                                                 ++$count;
 411                                                 next if $count < $from;
 412                                                 if ($readback) {
 413                                                         push @out, \@r;
 414                                                         last if $count >= $to;
 415                                                 } else {
 416                                                         push @out, \@r;
 417                                                         shift @out if $count >= $to;
 418                                                 }
 419                                         }
 420                                 }
 421                                 dbg("Spot::search file recs read: $rec") if isdbg('search');
 422                                 last if $count >= $to; # stop after to
 423                         }
 424                 }
 425         }
 426         return ("Spot search error", $@) if $@;
 427
 428         @out = sort {$b->[2] <=> $a->[2]} @out if @out;
 429         return @out;
 430 }
 431
 432 # change a freq range->regular expression
 433 sub ftor
 434 {
 435         my ($a, $b) = @_;
 436         return undef unless $a < $b;
 437         $b--;
 438         my $d = $b - $a;
 439         my @a = split //, $a;
 440         my @b = split //, $b;
 441         my $out;
 442         while (@b > @a) {
 443                 $out .= shift @b;
 444         }
 445         while (@b) {
 446                 my $aa = shift @a;
 447                 my $bb = shift @b;
 448                 if (@b < (length $d)) {
 449                         $out .= '\\d';
 450                 } elsif ($aa eq $bb) {
 451                         $out .= $aa;
 452                 } elsif ($aa < $bb) {
 453                         $out .= "[$aa-$bb]";
 454                 } else {
 455                         $out .= "[0-$bb$aa-9]";
 456                 }
 457         }
 458         return $out;
 459 }
 460
 461 # format a spot for user output in list mode
 462 sub formatl
 463 {
 464         my $t = ztime($_[3]);
 465         my $d = cldate($_[3]);
 466         my $spotter = "<$_[5]>";
 467         my $comment = $_[4] || '';
 468         $comment =~ s/\t+/ /g;
 469         my $cl = length $comment;
 470         my $s = sprintf "%9.1f %-11s %s %s", $_[1], $_[2], $d, $t;
 471         my $width = ($_[0] ? $_[0] : 80) - length($spotter) - length($s) - 4;
 472
 473         $comment = substr $comment, 0, $width if $cl > $width;
 474         $comment .= ' ' x ($width-$cl) if $cl < $width;
 475
 476 #       return sprintf "%8.1f  %-11s %s %s  %-28.28s%7s>", $_[0], $_[1], $d, $t, ($_[3]||''), "<$_[4]" ;
 477         return "$s $comment$spotter";
 478 }
 479
 480 # enter the spot for dup checking and return true if it is already a dup
 481 sub dup
 482 {
 483         my ($freq, $call, $d, $text, $by, $node, $just_find) = @_;
 484
 485         dbg("Spot::dup: freq=$freq call=$call d=$d text='$text' by=$by node=$node" . ($just_find ? " jf=$just_find" : "")) if isdbg('spotdup');
 486
 487         # dump if too old
 488         return 2 if $d < $main::systime - $dupage;
 489
 490         # turn the time into minutes (should be already but...)
 491         $d = int ($d / 60);
 492         $d *= 60;
 493
 494         my $nd = nearest($timegranularity, $d);
 495
 496         # remove SSID or area
 497         $by =~ s|[-/]\d+$||;
 498
 499 #       $freq = sprintf "%.1f", $freq;       # normalise frequency
 500         $freq = int $freq;       # normalise frequency
 501
 502         my $qrg = nearest($qrggranularity, $freq); # to the nearest however many hz
 503
 504         $call = substr($call, 0, $maxcalllth) if length $call > $maxcalllth;
 505
 506
 507         chomp $text;
 508         $text =~ s/\%([0-9A-F][0-9A-F])/chr(hex($1))/eg;
 509         $text = uc unpad($text);
 510         my $otext = $text;
 511 #       $text = Encode::encode("iso-8859-1", $text) if $main::can_encode && Encode::is_utf8($text, 1);
 512         $text =~ s/^\+\w+\s*//;                 # remove leading LoTW callsign
 513         $text =~ s/\s{2,}[\dA-Z]?[A-Z]\d?$// if length $text > 24;
 514         $text =~ s/[\W\x00-\x2F\x7B-\xFF]//g; # tautology, just to make quite sure!
 515         $text = substr($text, 0, $duplth) if length $text > $duplth;
 516         my $ldupkey = $oldstyle ? "X|$call|$by|$node|$freq|$d|$text" : "X|$call|$by|$node|$qrg|$nd|$text";
 517
 518         dbg("Spot::dup ldupkey $ldupkey") if isdbg('spotdup');
 519
 520         my $t = DXDupe::find($ldupkey);
 521         return 1 if $t && $t - $main::systime > 0;
 522
 523         DXDupe::add($ldupkey, $main::systime+$dupage) unless $just_find;
 524         $otext = substr($otext, 0, $duplth) if length $otext > $duplth;
 525         $otext =~ s/\s+$//;
 526         if (length $otext && $otext ne $text) {
 527                 $ldupkey = $oldstyle ? "X|$freq|$call|$by|$otext" : "X|$qrg|$call|$by|$otext";
 528                 $t = DXDupe::find($ldupkey);
 529                 return 1 if $t && $t - $main::systime > 0;
 530                 DXDupe::add($ldupkey, $main::systime+$dupage) unless $just_find;
 531         }
 532         return undef;
 533 }
 534
 535 sub dup_find
 536 {
 537         return dup(@_, 1);
 538 }
 539
 540 sub listdups
 541 {
 542         return DXDupe::listdups('X', $dupage, @_);
 543 }
 544
 545 sub genstats
 546 {
 547         my $date = shift;
 548         my $in = $fp->open($date) or dbg("Spot::genstats: Cannot open " . $fp->fn($date) . " $!");
 549         my $out = $statp->open($date, 'w') or dbg("Spot::genstats: Cannot open " . $statp->fn($date) . " $!");
 550         my @freq;
 551         my %list;
 552         my @tot;
 553
 554         if ($in && $out) {
 555                 my $i = 0;
 556                 @freq = map {[$i++, Bands::get_freq($_)]} qw(136khz 160m 80m 60m 40m 30m 20m 17m 15m 12m 10m 6m 4m 2m 220 70cm 23cm 13cm 9cm 6cm 3cm 12mm 6mm);
 557                 while (<$in>) {
 558                         chomp;
 559                         my ($freq, $by, $dxcc) = (split /\^/)[0,4,6];
 560                         my $ref = $list{$by} || [0, $dxcc];
 561                         for (@freq) {
 562                                 next unless defined $_;
 563                                 if ($freq >= $_->[1] && $freq <= $_->[2]) {
 564                                         $$ref[$_->[0]+2]++;
 565                                         $tot[$_->[0]+2]++;
 566                                         $$ref[0]++;
 567                                         $tot[0]++;
 568                                         $list{$by} = $ref;
 569                                         last;
 570                                 }
 571                         }
 572                 }
 573
 574                 for ($i = 0; $i < @freq+2; $i++) {
 575                         $tot[$i] ||= 0;
 576                 }
 577                 $statp->write($date, join('^', 'TOTALS', @tot));
 578
 579                 for (sort {$list{$b}->[0] <=> $list{$a}->[0]} keys %list) {
 580                         my $ref = $list{$_};
 581                         my $call = $_;
 582                         for ($i = 0; $i < @freq+2; ++$i) {
 583                                 $ref->[$i] ||= 0;
 584                         }
 585                         $statp->write($date, join('^', $call, @$ref));
 586                 }
 587                 $statp->close;
 588         }
 589 }
 590
 591 # return true if the stat file is newer than than the spot file
 592 sub checkstats
 593 {
 594         my $date = shift;
 595         my $in = $fp->mtime($date);
 596         my $out = $statp->mtime($date);
 597         return defined $out && defined $in && $out >= $in;
 598 }
 599
 600 # daily processing
 601 sub daily
 602 {
 603         my $date = Julian::Day->new($main::systime)->sub(1);
 604         genstats($date) unless checkstats($date);
 605         clean_cache();
 606 }
 607
 608 sub _cachek
 609 {
 610         return "$_[0]->[0]|$_[0]->[1]";
 611 }
 612
 613 sub clean_cache
 614 {
 615         if ($spotcachedays > 0) {
 616                 my $now = Julian::Day->new($main::systime);
 617                 for (my $i = $spotcachedays; $i < $spotcachedays + 5; ++$i ) {
 618                         my $k = _cachek($now->sub($i));
 619                         if (exists $spotcache{$k}) {
 620                                 dbg("Spot::spotcache deleting day $k, more than $spotcachedays days old");
 621                                 delete $spotcache{$k};
 622                         }
 623                 }
 624         }
 625 }
 626 1;
 627
 628
 629
 630