/usr/sbin/sharedindexsplit is in courier-base 0.78.0-2ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | #! /usr/bin/perl
#
# Copyright 2004 Double Precision, Inc.
#
# See COPYING for distribution information.
#
# Split the shared index into multiple files. The entire shared index is
# piped on stdin. There are two modes of operation:
# - if nletters is specified and is greater than 0, then
# split based on the first n characters of the username
# - if nletters is omitted or zero, then split based on the 'sharedgroup'
# account option. This requires the options to be given as column 6 of
# the input.
#
# Assume that account names use only the Latin alphabet.
use IO::File;
my $hasEncode=0;
eval 'use Encode; $hasEncode=1;';
if ($hasEncode)
{
$hasEncode=0;
grep {$hasEncode=1 if $_ eq "UTF-32BE"; } Encode->encodings(":all");
}
my $mult=1;
$mult=4 if $hasEncode;
my $outputdir=shift @ARGV;
my $nletters=shift @ARGV;
die "Usage: $0 outputdir [ letters ]\n" unless -d $outputdir;
print "*** WARNING - Encode not found, you should upgrade to Perl 5.8.0\n"
unless $hasEncode;
$nletters=0 unless defined($nletters);
my %FILES; # All opened files
my @MRU; # Recycle using most-recently-used mechanism.
sub indexfile {
my $filename=shift @_;
Encode::from_to($filename, "UTF-32BE", "UTF-8") if $hasEncode;
return "$filename";
}
while (defined($_=<STDIN>))
{
chomp;
s/\#.*//;
my @fields=split /\t/;
next unless $#fields>2; # Comments, etc...
my $key;
if ($nletters > 0)
{
$key=$fields[0];
Encode::from_to($key, "UTF-8", "UTF-32BE") if $hasEncode;
$key=substr($key, 0, $nletters * $mult);
}
elsif ($fields[5] =~ /(^|,)sharedgroup=([^,]+)/)
{
$key = $2;
Encode::from_to($key, "UTF-8", "UTF-32BE") if $hasEncode;
}
else
{
$key = "";
}
while (length($key) < $nletters * $mult)
{
my $u="_";
$u=Encode::encode("UTF-32BE", $u) if $hasEncode;
$key .= $u;
}
if (defined $FILES{$key})
{
@MRU=grep {$_ ne $key} @MRU;
push @MRU, $key;
}
else
{
unless ($#MRU < 3)
{
my $oldest=shift @MRU;
close($FILES{$oldest});
$FILES{$oldest}=undef;
}
push @MRU, $key;
open( ($FILES{$key}=new IO::File), ">>$outputdir/index"
. indexfile($key) . "\n")
|| die "$outputdir/index" . indexfile($key) . ": $!\n";
}
my $fh=$FILES{$key};
splice(@fields,5,1); # hide options
(print $fh (join("\t", @fields) . "\n")) || exit 1;
}
grep { ( close($FILES{$_}) || exit(1)) if defined $FILES{$_}} keys %FILES;
while ($nletters > 0)
{
my %NEWKEYS;
my %NEWFILES;
--$nletters;
foreach (keys %FILES)
{
$NEWKEYS{substr($_, 0, $nletters * $mult)}=1;
push @{$NEWFILES{substr($_, 0, $nletters * $mult)}}, $_;
}
foreach (keys %NEWFILES)
{
my $fn=indexfile($_);
open(FH, ">$outputdir/index$fn") || die "$outputdir/index$fn: $!\n";
grep { my $x=indexfile($_);print FH "$x\t*\tindex$x\n"
|| exit 1; } @{$NEWFILES{$_}};
close(FH) || exit 1;
}
%FILES=%NEWKEYS;
}
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