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#!/usr/bin/perl
sub countmsgs {
return -1 unless open(M, "<$mbox");
my $inhdr = 0;
my $cl = undef;
my $msgread = 0;
my $count = 0;
while(<M>) {
if (!$inhdr && /^From\s+\S+\s+(?i:sun|mon|tue|wed|thu|fri|sat)\s+(?i:jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)\s+\d+\s/) {
$inhdr = 1;
$msgread = 0;
undef $cl;
next;
}
if ($inhdr) {
if (/^content-length:\s+(\d+)/i) {
$cl = 0+$1;
next;
}
if (/^status:\s+(\S)/i) {
$msgread = 1 unless $1 eq 'N' || $1 eq 'U';
next;
}
if ($_ eq "\n") {
$count++ if !$msgread;
seek(M, $cl, 1) if defined $cl;
$inhdr = 0;
}
}
}
close M;
return $count;
}
$| = 1;
$mbox = $ARGV[0] || $ENV{'MAIL'};
$oldfmt = $ARGV[1] || "%4d ";
$newfmt = $ARGV[2] || "\005{Rk}%4d \005{-}";
@oldstat = stat($mbox);
if (!@oldstat) {
print "\005{Rk} ??? \005{-}\n";
exit 1;
}
$oldcount = 0;
while(1) {
$count = countmsgs($mbox);
if ($count == -1) {
print "\005{Rk} ??? \005{-}\n";
} elsif ($count < $oldcount || $count == 0) {
printf "$oldfmt\n", $count;
} else {
printf "$newfmt\n", $count;
}
$oldcount = $count;
while (1) {
@newstat = stat($mbox);
if (!@newstat) {
print "\005{Rk} ??? \005{-}\n";
exit 1;
}
last if $newstat[7] != $oldstat[7] || $newstat[9] != $oldstat[9];
sleep 1;
}
@oldstat = @newstat;
}
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