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#!/usr/local/bin/perl -w |
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# -*- Mode: Perl -*- |
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# $Basename$ |
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# $Revision: 1.1 $ |
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# Author : Ulrich Pfeifer |
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# Created On : Mon Apr 17 12:33:23 2000 |
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# Last Modified By: Ulrich Pfeifer |
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# Last Modified On: Sat Nov 11 16:27:32 2000 |
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# Language : CPerl |
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# |
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# (C) Copyright 2000, UUNET Deutschland GmbH, Germany |
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# |
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|
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use DB_File; |
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use strict; |
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|
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my %idx; |
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my $file = shift; |
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my $dbh = tie %idx, 'DB_File', $file, O_RDONLY, 0664, $DB_BTREE |
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or die; |
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|
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sub is_an_old_index { |
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my $dbh = shift; |
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|
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my $O = pack('C', 0xff)."o"; |
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my ($word, $value) = ($O.$;); |
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$dbh->seq($word, $value, R_CURSOR); |
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for (my $i=0; $i<10;$i++) { |
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if (not $value or $value !~ /^\d+$/) { |
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return 0; |
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} |
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if ($dbh->seq($word, $value, R_NEXT) or # no values left |
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$word !~ /^$O/o # no $O values left |
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) { |
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# we are not sure enough that this is an old index |
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print "Hmm, that's difficult\n"; |
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return 0; |
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} |
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} |
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return 1; |
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} |
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|
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sub pl { |
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my $value = shift; |
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my @p = unpack 'w*', $value; |
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my @r; |
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while (@p) { |
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push @r, join '', shift @p, ":", shift @p; |
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} |
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join ", ", @r; |
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} |
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|
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my $old= is_an_old_index($dbh); |
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warn sprintf("%s is %s old index\n", $file, |
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$old ? "a":"not an"); |
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|
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if ($old) { |
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while (my($key, $value) = each %idx) { |
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if ($key =~ /^\377([om]).(.*)/) { |
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print "$1\t$2\t$value\n"; |
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} else { |
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print "p\t", $key, "\t", pl($value), "\n"; |
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} |
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} |
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} else { |
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while (my($key, $value) = each %idx) { |
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my $type = substr($key,0,1); |
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my $word = substr($key,1); |
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print $type, "\t", $word, "\t"; |
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if ($type eq 'p') { |
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print pl($value); |
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} else { |
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print $value; |
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} |
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print "\n"; |
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} |
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} |
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undef $dbh; |
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untie %idx; |
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