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#!/usr/bin/perl -w |
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# reblog-dupe.pl - remove unread duplicate posts which have need read |
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# |
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# currently works without any care about users, so use is limited |
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# to single-user installations |
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# |
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# 07/08/2006 06:26:47 PM CEST Dobrica Pavlinusic <dpavlin@rot13.org> |
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|
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use strict; |
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use DBI; |
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use Text::DeDuper; |
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use Data::Dump qw/dump/; |
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|
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$|++; |
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|
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my $delete_read_duplicates = 0; |
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|
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my $connect = "DBI:mysql:database=reblog"; |
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my $dbh = DBI->connect($connect,"","") || die $DBI::errstr; |
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|
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my $user_id = 1; |
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|
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# select all posts which have been read or unread |
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my $sql = qq{ |
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select |
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id, content, feed_id |
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from items |
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join items_userdata on id=item_id |
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where label = 'read' |
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and value_numeric = ? |
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and user_id = $user_id |
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order by id |
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}; |
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|
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my $sth = $dbh->prepare($sql) || die $dbh->errstr(); |
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$sth->execute( 1 ) || die $sth->errstr(); |
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|
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print "found ",$sth->rows," items to process..."; |
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|
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my $deduper = new Text::DeDuper(); |
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|
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sub strip { |
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my $t = shift || return; |
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$t =~ s/<[^>]*>//gs; |
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$t =~ s/\s+/ /gs; |
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return $t if ($t ne ' '); |
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} |
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|
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my $i = 0; |
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|
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while (my $row = $sth->fetchrow_hashref() ) { |
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|
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my $t = strip( $row->{content} ) || next; |
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|
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$deduper->add_doc( $row->{id}, $t ); |
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|
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$i++; |
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print "$i " if ($i % 100 == 0); |
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|
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} |
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|
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print "\n"; |
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|
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if ( $delete_read_duplicates ) { |
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|
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print "find duplicates..."; |
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|
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my $sth_delete = $dbh->prepare($sql) || die $dbh->errstr(); |
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|
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my @delete; |
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|
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$sth->execute( 1 ) || die $sth->errstr(); |
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while (my $row = $sth->fetchrow_hashref() ) { |
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|
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my $id = $row->{id} || die "no id in now"; |
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my $t = strip( $row->{content} ) || next; |
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|
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my @s = sort { $a <=> $b } $deduper->find_similar($t); |
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next if (! @s || $#s == 0); |
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|
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my $first = shift @s; |
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|
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next if ($first != $id); |
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|
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print " $id [", join(",", @s), "]"; |
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|
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$dbh->do( "delete from items where id in (" . join(",", @s) . ")" ); |
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|
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} |
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print "\n"; |
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|
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print "about to delete associated items_userdata\n"; |
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$dbh->do( "delete from items_userdata where item_id not in (select id from items)" ); |
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|
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} |
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|
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my @duplicates; |
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my $feeds; |
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|
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my $deduper_unread = new Text::DeDuper(); |
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|
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# now, take unread posts to find duplicates |
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$sth->execute( 0 ) || die $sth->errstr(); |
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|
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print "comparing with ", $sth->rows," unread items...\n"; |
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|
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while (my $row = $sth->fetchrow_hashref() ) { |
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my $id = $row->{id} || die "no id in now"; |
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|
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my $t = strip( $row->{content} ) || next; |
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$deduper_unread->add_doc( $row->{id}, $t ); |
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my @s = $deduper->find_similar($t); |
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next if (! @s); |
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|
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print $id, " has ", $#s + 1, " copies: ", join(",", @s), "\n"; |
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push @duplicates, $id; |
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|
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$feeds->{ $row->{feed_id} }++; |
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} |
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|
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# and again, but compare just unread items |
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|
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$sth->execute( 0 ) || die $sth->errstr(); |
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print "finding dulicates in ", $sth->rows," unread items...\n"; |
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|
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while (my $row = $sth->fetchrow_hashref() ) { |
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|
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my $id = $row->{id} || die "no id in now"; |
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|
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my $t = strip( $row->{content} ) || next; |
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|
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my @s; |
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foreach my $d_id ( $deduper_unread->find_similar($t) ) { |
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push @s, $d_id if ($d_id > $id); |
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} |
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next if (! @s); |
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|
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print $id, " has ", $#s + 1, " duplicates: ", join(",", @s), "\n"; |
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push @duplicates, ( @s ); |
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|
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$feeds->{ $row->{feed_id} }++; |
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} |
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|
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# mark duplicates as read |
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|
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my $ids = join(",", @duplicates); |
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if (! $ids) { |
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print "no duplicates found\n"; |
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exit; |
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} |
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|
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print "found ", $#duplicates + 1, " duplicate items: $ids\n"; |
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|
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$sql = qq{ |
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update items_userdata |
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set value_numeric = 1 |
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where label = 'read' and item_id in ($ids) and user_id = $user_id |
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}; |
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|
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$dbh->do( $sql ); |
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|
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# update usage_unread on modified feeds |
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|
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$sql = qq{ |
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update feeds_userdata |
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set value_numeric = value_numeric - ? |
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where label = 'usage_unread' and feed_id = ? and user_id = $user_id |
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}; |
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|
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$sth = $dbh->prepare($sql) || die $dbh->errstr(); |
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foreach my $feed_id (keys %$feeds) { |
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my $nr_read = $feeds->{$feed_id} || die "no messages marked as read"; |
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$sth->execute( $nr_read, $feed_id ) || die $sth->errstr(); |
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print "removed $nr_read messages from feed $feed_id\n"; |
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} |
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