/[Search-Estraier]/trunk/Estraier.pm

This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!

Diff of /trunk/Estraier.pm

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-revision 15 by dpavlin,
Wed Jan  4 22:24:57 2006 UTC
+revision 36 by dpavlin,
Thu Jan  5 21:51:54 2006 UTC
 Line 306 
 sub delete {
  package Search::Estraier::Condition;
+ use Carp qw/confess croak/;
  use Search::Estraier;
  our @ISA = qw/Search::Estraier/;
+ =head1 Search::Estraier::Condition
+ =head2 new
+   my $cond = new Search::HyperEstraier::Condition;
+ =cut
+ sub new {
+         my $class = shift;
+         my $self = {};
+         bless($self, $class);
+         $self->{max} = -1;
+         $self->{options} = 0;
+         $self ? return $self : return undef;
+ }
+ =head2 set_phrase
+   $cond->set_phrase('search phrase');
+ =cut
+ sub set_phrase {
+         my $self = shift;
+         $self->{phrase} = $self->_s( shift );
+ }
+ =head2 add_attr
+   $cond->add_attr('@URI STRINC /~dpavlin/');
+ =cut
+ sub add_attr {
+         my $self = shift;
+         my $attr = shift || return;
+         push @{ $self->{attrs} }, $self->_s( $attr );
+ }
+ =head2 set_order
+   $cond->set_order('@mdate NUMD');
+ =cut
+ sub set_order {
+         my $self = shift;
+         $self->{order} = shift;
+ }
+ =head2 set_max
+   $cond->set_max(42);
+ =cut
+ sub set_max {
+         my $self = shift;
+         my $max = shift;
+         croak "set_max needs number" unless ($max =~ m/^\d+$/);
+         $self->{max} = $max;
+ }
+ =head2 set_options
+   $cond->set_options( SURE => 1 );
+ =cut
  my $options = {
          # check N-gram keys skipping by three
          SURE => 1 << 0,
-Line 324 
 my $options = {
+Line 398 
 my $options = {
          SIMPLE => 1 << 10,
  };
- =head1 Search::Estraier::Condition
+ sub set_options {
+         my $self = shift;
+         my $option = shift;
+         confess "unknown option" unless ($options->{$option});
+         $self->{options} ||= $options->{$option};
+ }
+ =head2 phrase
+ Return search phrase.
+   print $cond->phrase;
+ =cut
+ sub phrase {
+         my $self = shift;
+         return $self->{phrase};
+ }
+ =head2 order
+ Return search result order.
+   print $cond->order;
+ =cut
+ sub order {
+         my $self = shift;
+         return $self->{order};
+ }
+ =head2 attrs
+ Return search result attrs.
+   my @cond_attrs = $cond->attrs;
+ =cut
+ sub attrs {
+         my $self = shift;
+         #croak "attrs return array, not scalar" if (! wantarray);
+         return @{ $self->{attrs} };
+ }
+ =head2 max
+ Return maximum number of results.
+   print $cond->max;
+ C<-1> is returned for unitialized value, C<0> is unlimited.
+ =cut
+ sub max {
+         my $self = shift;
+         return $self->{max};
+ }
+ =head2 options
+ Return options for this condition.
+   print $cond->options;
+ Options are returned in numerical form.
+ =cut
+ sub options {
+         my $self = shift;
+         return $self->{options};
+ }
+ package Search::Estraier::ResultDocument;
+ use Carp qw/croak/;
+ #use Search::Estraier;
+ #our @ISA = qw/Search::Estraier/;
+ =head1 Search::Estraier::ResultDocument
  =head2 new
-   my $cond = new Search::HyperEstraier::Condition;
+   my $rdoc = new Search::HyperEstraier::ResultDocument(
+         uri => 'http://localhost/document/uri/42',
+         attrs => {
+                 foo => 1,
+                 bar => 2,
+         },
+         snippet => 'this is a text of snippet'
+         keywords => 'this\tare\tkeywords'
+   );
  =cut
  sub new {
          my $class = shift;
-         my $self = {};
+         my $self = {@_};
          bless($self, $class);
+         foreach my $f (qw/uri attrs snippet keywords/) {
+                 croak "missing $f for ResultDocument" unless defined($self->{$f});
+         }
          $self ? return $self : return undef;
  }
+ =head2 uri
+ Return URI of result document
+   print $rdoc->uri;
+ =cut
+ sub uri {
+         my $self = shift;
+         return $self->{uri};
+ }
- package Search::Estraier::Master;
- use Carp;
+ =head2 attr_names
- =head1 Search::Estraier::Master
+ Returns array with attribute names from result document object.
- Controll node master. This requires user with administration priviledges.
+   my @attrs = $rdoc->attr_names;
  =cut
- {
+ sub attr_names {
-         package RequestAgent;
+         my $self = shift;
-         our @ISA = qw(LWP::UserAgent);
+         croak "attr_names return array, not scalar" if (! wantarray);
+         return sort keys %{ $self->{attrs} };
+ }
-         sub new {
+ =head2 attr
-                 my $self = LWP::UserAgent::new(@_);
-                 $self->agent("Search-Estraier/$Search::Estraer::VERSION");
-                 $self;
-         }
-         sub get_basic_credentials {
+ Returns value of an attribute.
-                 my($self, $realm, $uri) = @_;
- #               return ($user, $password);
+   my $value = $rdoc->attr( 'attribute' );
-         }
+ =cut
+ sub attr {
+         my $self = shift;
+         my $name = shift || return;
+         return $self->{attrs}->{ $name };
  }
+ =head2 snippet
+ Return snippet from result document
- =head2 new
+   print $rdoc->snippet;
- Create new connection to node master.
+ =cut
-   my $master = new Search::Estraier::Master(
+ sub snippet {
-         url => 'http://localhost:1978',
+         my $self = shift;
-         user => 'admin',
+         return $self->{snippet};
-         passwd => 'admin',
+ }
+ =head2 keywords
+ Return keywords from result document
+   print $rdoc->keywords;
+ =cut
+ sub keywords {
+         my $self = shift;
+         return $self->{keywords};
+ }
+ package Search::Estraier::NodeResult;
+ use Carp qw/croak/;
+ #use Search::Estraier;
+ #our @ISA = qw/Search::Estraier/;
+ =head1 Search::Estraier::NodeResult
+ =head2 new
+   my $res = new Search::HyperEstraier::NodeResult(
+         docs => @array_of_rdocs,
+         hits => %hash_with_hints,
    );
  =cut
-Line 386 
 sub new {
+Line 603 
 sub new {
          my $self = {@_};
          bless($self, $class);
-         foreach my $p (qw/url user passwd/) {
+         foreach my $f (qw/docs hints/) {
-                 croak "need $p" unless ($self->{$p});
+                 croak "missing $f for ResultDocument" unless defined($self->{$f});
          }
          $self ? return $self : return undef;
  }
+ =head2 doc_num
+ Return number of documents
+   print $res->doc_num;
+ =cut
+ sub doc_num {
+         my $self = shift;
+         return $#{$self->{docs}};
+ }
+ =head2 get_doc
+ Return single document
+   my $doc = $res->get_doc( 42 );
+ Returns undef if document doesn't exist.
+ =cut
+ sub get_doc {
+         my $self = shift;
+         my $num = shift;
+         croak "expect number as argument" unless ($num =~ m/^\d+$/);
+         return undef if ($num < 0 || $num > $self->{docs});
+         return $self->{docs}->[$num];
+ }
+ =head2 hint
+ Return specific hint from results.
+   print $rec->hint( 'VERSION' );
+ Possible hints are: C<VERSION>, C<NODE>, C<HIT>, C<HINT#n>, C<DOCNUM>, C<WORDNUM>,
+ C<TIME>, C<LINK#n>, C<VIEW>.
+ =cut
+ sub hint {
+         my $self = shift;
+         my $key = shift || return;
+         return $self->{hints}->{$key};
+ }
+ package Search::Estraier::Node;
+ use Carp qw/croak/;
+ use URI;
+ use MIME::Base64;
+ use IO::Socket::INET;
+ =head1 Search::Estraier::Node
+ =head2 new
+   my $node = new Search::HyperEstraier::Node;
+ =cut
+ sub new {
+         my $class = shift;
+         my $self = {
+                 pxport => -1,
+                 timeout => 0,   # this used to be -1
+                 dnum => -1,
+                 wnum => -1,
+                 size => -1.0,
+                 wwidth => 480,
+                 hwidth => 96,
+                 awidth => 96,
+                 status => -1,
+         };
+         bless($self, $class);
+         $self ? return $self : return undef;
+ }
+ =head2 set_url
+ Specify URL to node server
+   $node->set_url('http://localhost:1978');
+ =cut
+ sub set_url {
+         my $self = shift;
+         $self->{url} = shift;
+ }
+ =head2 set_proxy
+ Specify proxy server to connect to node server
+   $node->set_proxy('proxy.example.com', 8080);
+ =cut
+ sub set_proxy {
+         my $self = shift;
+         my ($host,$port) = @_;
+         croak "proxy port must be number" unless ($port =~ m/^\d+$/);
+         $self->{pxhost} = $host;
+         $self->{pxport} = $port;
+ }
+ =head2 set_timeout
+ Specify timeout of connection in seconds
+   $node->set_timeout( 15 );
+ =cut
+ sub set_timeout {
+         my $self = shift;
+         my $sec = shift;
+         croak "timeout must be number" unless ($sec =~ m/^\d+$/);
+         $self->{timeout} = $sec;
+ }
+ =head2 set_auth
+ Specify name and password for authentication to node server.
+   $node->set_auth('clint','eastwood');
+ =cut
+ sub set_auth {
+         my $self = shift;
+         my ($login,$passwd) = @_;
+         $self->{auth} = encode_base64( "$login:$passwd" );
+ }
+ =head2 status
+ Return status code of last request.
+   print $res->status;
+ C<-1> means connection failure.
+ =cut
+ sub status {
+         my $self = shift;
+         return $self->{status};
+ }
+ =head2 shuttle_url
+ This is method which uses C<IO::Socket::INET> to communicate with Hyper Estraier node
+ master.
+   my $rv = shuttle_url( $url, $content_type, \$req_body, \$resbody );
+ C<$resheads> and C<$resbody> booleans controll if response headers and/or response
+ body will be saved within object.
+ =cut
+ sub shuttle_url {
+         my $self = shift;
+         my ($url, $content_type, $reqbody, $resbody) = @_;
+         my $status = -1;
+         warn $url;
+         $url = new URI($url);
+         return -1 unless ($url && $url->scheme && $url->scheme eq 'http' && $url->host && $url->port > 1);
+         my ($host,$port,$query) = ($url->host, $url->port, $url->path);
+         if ($self->{pxhost}) {
+                 ($host,$port) = ($self->{pxhost}, $self->{pxport});
+                 $query = "http://$host:$port/$query";
+         }
+         $query .= '?' + $url->query if ($url->query && ! $reqbody);
+         my $sock = IO::Socket::INET->new(
+                 PeerAddr        => $host,
+                 PeerPort        => $port,
+                 Proto           => 'tcp',
+                 Timeout         => $self->{timeout} || 90,
+         ) || return -1;
+         if ($reqbody) {
+                 print $sock "POST $query HTTP/1.0\r\n";
+         } else {
+                 print $sock "GET $query HTTP/1.0\r\n";
+         }
+         print $sock "Host: $url->host:$url->port\r\n";
+         print $sock "Connection: close\r\n";
+         print $sock "User-Agent: Search-Estraier/$Search::Estraier::VERSION\r\n";
+         print $sock "Content-Type $content_type\r\n";
+         print $sock "Authorization: Basic $self->{auth}\r\n";
+         {
+                 use bytes;
+                 print $sock "Content-Length: ", length($reqbody), "\r\n";
+         }
+         print $sock "\r\n";
+         print $sock $$reqbody if ($reqbody);
+         my $line = <$sock>;
+         chomp($line);
+         my ($schema, $res_status, undef) = split(/  */, $line, 3);
+         return if ($schema !~ /^HTTP/ || ! $res_status);
+         $self->{status} = $res_status;
+         # skip rest of headers
+         do {
+                 $line = <$sock>;
+                 chomp($line);
+         } until ($line eq '');
+         # read body
+         my $len = 0;
+         do {
+                 $len = read($sock, my $buf, 8192);
+                 $$resbody .= $buf if ($resbody);
+         } while ($len);
+         return $status;
+ }
  ###

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