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package Plucene::SearchEngine::Index::URL; |
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1
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1
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1026
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use base "Plucene::SearchEngine::Index::Base"; |
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2
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1
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68
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3
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4
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1
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use strict; |
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1
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1
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30
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5
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1
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use Carp; |
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1
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1
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56
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6
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1
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1
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use Time::Piece; |
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2
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1
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8
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1
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1
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76
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use File::Temp; |
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2
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1
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100
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8
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1
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1
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3415
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use URI; |
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1
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12529
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1
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21
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1
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1
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11339
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use Date::Parse; |
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1
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9787
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1
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171
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10
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1
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1
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1345
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use HTTP::Request; |
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28026
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1
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15
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1
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1
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3917
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use LWP::UserAgent; |
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26549
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1
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15
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12
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1
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1
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43
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use File::Basename; |
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1
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100
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1
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1
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use File::Temp qw(tempfile); |
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2
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1
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450
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14
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15
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=head1 NAME |
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17
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Plucene::SearchEngine::Index::URL - File reader for web URLs |
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=head1 DESCRIPTION |
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21
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This frontend module takes a URL, downloads its content, extracts its metadata |
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and passes the file onto a backend. The frontend registers the following |
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Plucene fields: |
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25
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=over 3 |
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27
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=item mimetype |
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29
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The MIME type of the data. |
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31
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=item filename |
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33
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The basename of the URL's filename. |
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35
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=item id |
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37
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The URL given. |
38
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39
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=item modified |
40
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41
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A Plucene date field representing the last modified date of the file |
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43
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=item language |
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The ISO language identifier of the content |
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47
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=item encoding |
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49
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The original character set. (before conversion to UTF-8) |
50
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51
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=back |
52
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53
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=head2 METHODS |
54
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55
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Plucene::SearchEngine::Index::URL->examine($url); |
56
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57
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This downloads and examines a file on the filesystem for the above metadata, |
58
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before handling it to a backend. |
59
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60
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=cut |
61
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62
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sub examine { |
63
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0
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0
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0
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my ($class, $url) = @_; |
64
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0
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my $ua = LWP::UserAgent->new; |
65
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0
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my $response = $ua->get($url); |
66
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0
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0
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return unless $response->is_success; |
67
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68
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0
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my $encoding = ""; |
69
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0
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my $filename = basename($url); # Hack, hack |
70
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0
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my $mime = $response->header("Content-Type"); |
71
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0
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$mime =~ s/;\s+(.*)//; |
72
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0
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my $rest = $1; |
73
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0
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my $self = $class->handler_for($filename, $mime)->new(); |
74
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0
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my $lm = $response->header("Last-Modified"); |
75
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0
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0
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if ($rest =~ /charset=([\w\-]+)/) { $encoding = $1; } |
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0
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76
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77
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0
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0
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if (my $language =$response->header("Content-Language")) { |
78
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0
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$self->add_data("language", "Keyword", $language); |
79
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} |
80
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81
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0
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$self->add_data("mimetype", "Keyword", $mime); |
82
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0
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$self->add_data("id", "Keyword", $url); |
83
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0
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$self->add_data("filename", "Keyword", $filename); |
84
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0
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$self->add_data("modified", "Date", Time::Piece->new(str2time($lm))); |
85
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86
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0
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my ($fh, $tmpfile) = tempfile(); |
87
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0
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0
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if ($encoding) { |
88
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0
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require Encode; |
89
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0
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binmode $fh, ":utf8"; |
90
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0
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print $fh Encode::decode($encoding, $response->content); |
91
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} else { |
92
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0
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print $fh $response->content; |
93
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} |
94
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0
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close $fh; |
95
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0
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my @docs = $self->gather_data_from_file($tmpfile); |
96
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0
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0
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if (@docs <2) { @docs = ($self) } |
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0
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97
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0
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0
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if ($encoding) { |
98
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0
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$_->add_data("encoding", "Text", $encoding) for @docs; |
99
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} |
100
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0
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unlink $tmpfile; |
101
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0
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0
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if (wantarray) { return @docs } |
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0
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102
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else { |
103
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0
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carp "Using ->examine in scalar context is deprecated"; |
104
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0
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return $docs[0]; |
105
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} |
106
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} |
107
|
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108
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1; |