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# -*- perl -*- |
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# $Id: Glossary.pm,v 1.5 2004/02/23 07:27:49 eserte Exp $ |
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# Author: Slaven Rezic |
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# |
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# Copyright (C) 2002 Slaven Rezic. All rights reserved. |
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# |
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# Mail: slaven@rezic.de |
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# WWW: http://rezic.de/eserte |
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# |
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package WE::DB::Glossary; |
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use base qw(Class::Accessor); |
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1138
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__PACKAGE__->mk_accessors(qw(DB Root)); |
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use strict; |
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use vars qw($VERSION); |
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$VERSION = sprintf("%d.%02d", q$Revision: 1.5 $ =~ /(\d+)\.(\d+)/); |
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use MLDBM; |
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use Fcntl; |
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{ |
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package WE::GlossaryObj; |
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use base qw(Class::Accessor); |
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__PACKAGE__->mk_accessors |
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(qw(Keyword Description)); |
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sub new { bless {}, $_[0] } |
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} |
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{ |
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# this will be written to the database and should not be used otherwise |
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package WE::DB::Glossary::DBInfo; |
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use base qw(Class::Accessor); |
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1925
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__PACKAGE__->mk_accessors(qw()); |
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sub new { bless {}, $_[0] } |
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} |
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sub new { |
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my($class, $root, $file, %args) = @_; |
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my $self = {}; |
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1
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$args{-db} = "DB_File" unless defined $args{-db}; |
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$args{-serializer} = "Data::Dumper" unless defined $args{-serializer}; |
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$args{-locking} = 0 unless defined $args{-locking}; |
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$args{-readonly} = 0 unless defined $args{-readonly}; |
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$args{-writeonly} = 0 unless defined $args{-writeonly}; |
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1
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my @tie_args; |
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if ($args{-readonly}) { |
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push @tie_args, O_RDONLY; |
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} elsif ($args{-writeonly}) { |
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push @tie_args, O_RDWR; |
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} else { |
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push @tie_args, O_RDWR|O_CREAT; |
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} |
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push @tie_args, $args{-db} eq 'Tie::TextDir' ? 0770 : 0660; |
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if ($args{-db} eq 'DB_File') { |
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require DB_File; |
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push @tie_args, $DB_File::DB_BTREE; |
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if ($args{-locking}) { |
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$MLDBM::UseDB = 'DB_File::Lock'; |
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push @tie_args, $args{-readonly} ? "read" : "write"; |
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} else { |
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$MLDBM::UseDB = 'DB_File'; |
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} |
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} else { |
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$MLDBM::UseDB = $args{-db}; |
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} |
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$MLDBM::Serializer = $args{-serializer}; |
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tie %{ $self->{DB} }, 'MLDBM', $file, @tie_args |
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or require Carp, Carp::confess("Can't tie MLDBM database $file with args <@tie_args>, db <$MLDBM::UseDB> and serializer <$MLDBM::Serializer>: $!"); |
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bless $self, $class; |
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$self->Root($root); |
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# read database information |
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my $db_info = $self->DB->{__DBINFO__}; |
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if (!defined $db_info) { |
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$db_info = $self->DB->{__DBINFO__} = new WE::DB::Glossary::DBInfo; |
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} |
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# sync members with DBINFO |
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if ($db_info) { |
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# none yet |
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} |
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# set %args |
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# none yet |
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# write back database information |
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if (!$args{-readonly}) { |
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$self->DB->{__DBINFO__} = $db_info; |
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} |
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$self; |
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} |
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sub add_entry { |
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my($self, @args) = @_; |
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my %args; |
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for(my $i=0; $i<=$#args; $i++) { |
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if ($args[$i] =~ /^-/) { |
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$args{$args[$i]} = $args[$i+1]; |
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splice @args, $i, 2; |
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$i--; |
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} |
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} |
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my $obj; |
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if (UNIVERSAL::isa($args[0], "WE::GlossaryObj")) { |
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$obj = $args[0]; |
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} else { |
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my %obj_args = @args; |
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$obj = WE::GlossaryObj->new; |
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$obj->$_($obj_args{$_}) for (qw(Keyword Description)); |
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} |
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if (exists $self->{DB}->{$obj->Keyword}) { |
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if (!$args{-force}) { |
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require Carp, Carp::confess("There is already a glossary entry for keyword " . $obj->Keyword); |
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} |
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} |
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128
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$self->{DB}->{$obj->Keyword} = $obj; |
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$obj; |
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} |
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132
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sub delete_entry { |
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my($self, $keyword) = @_; |
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delete $self->{DB}->{$keyword}; |
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} |
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137
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sub get_entry { |
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my($self, $keyword) = @_; |
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$self->{DB}->{$keyword}; |
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} |
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142
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sub get_descr { |
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my($self, $keyword) = @_; |
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my $obj = $self->get_entry($keyword); |
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return undef if !$obj; |
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$obj->Description; |
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} |
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149
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sub all_keywords_regex { |
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my($self, $filter) = @_; |
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my @keywords; |
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while(my($k,$v) = each %{ $self->{DB} }) { |
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153
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next if $k =~ /^__/; # skip special keys |
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next if ($filter && !$filter->($k)); |
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push @keywords, $k; |
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} |
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"(" . join("|", map { "\\b" . quotemeta($_) . "\\b" } @keywords) . ")"; |
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158
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} |
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160
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1; |
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162
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__END__ |