/[swish]/trunk/spider/swishspider
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
ViewVC logotype

Contents of /trunk/spider/swishspider

Parent Directory Parent Directory | Revision Log Revision Log


Revision 30 - (show annotations)
Mon Mar 24 09:57:44 2003 UTC (17 years, 7 months ago) by dpavlin
File size: 3449 byte(s)
added instructions about formating of html before indexing it (and added
ability to unroll wrongly splited tags in form which is acceptable to swish)

1 #!/usr/local/bin/perl -w
2 use strict;
3
4 use LWP::UserAgent;
5 use HTTP::Status;
6 use HTML::LinkExtor;
7
8 if (scalar(@ARGV) != 2) {
9 print STDERR "Usage: SwishSpider localpath url\n";
10 exit(1);
11 }
12
13 my $ua = new LWP::UserAgent;
14 $ua->agent( "SwishSpider http://swish-e.org" );
15
16 my $localpath = shift;
17 my $url = shift;
18
19 my $no_parent_url;
20 if ($url =~ m/\s/) {
21 ($url,$no_parent_url) = split(/\s/,$url,2);
22 }
23
24 my $request = new HTTP::Request( "GET", $url );
25 my $response = $ua->simple_request( $request );
26
27 #
28 # Write out important meta-data. This includes the HTTP code. Depending on the
29 # code, we write out other data. Redirects have the location printed, everything
30 # else gets the content-type.
31 #
32 open( RESP, ">$localpath.response" ) || die( "Could not open response file $localpath.response" );
33
34 print RESP $response->code() . "\n";
35 if( $response->code() == RC_OK ) {
36 print RESP $response->header( "content-type" ) . "\n";
37 } elsif( $response->is_redirect() ) {
38 my $link = $response->header( "location" );
39 if ($no_parent_url) {
40 if ($link =~ m/$no_parent_url/) {
41 # if this URL is below parent URL o.k....
42 print RESP "$link $no_parent_url\n";
43 } else {
44 # if not, crawl just this page!
45 print RESP "$link $link\n";
46 }
47 } else {
48 print RESP "$link\n";
49 }
50 }
51 close( RESP );
52
53 #
54 # Write out the actual data assuming the retrieval was succesful. Also, if
55 # we have actual data and it's of type text/html, write out all the links it
56 # refers to
57 #
58 if( $response->code() == RC_OK ) {
59 my $contents = $response->content();
60
61 open( CONTENTS, ">$localpath.contents" ) || die( "Could not open contents file $localpath.contents\n" );
62 # if you don't want content to be indexed, include it in
63 # <noindex> foobar </noindex> tags or surround it with comments
64 # <!-- noindex --> foobar <!-- /noindex -->
65 $contents =~ s,<noindex>.+?</noindex>,,isg;
66 $contents =~ s,<!--\s*noindex\s*-->.+?<!--\s*/noindex\s*-->,,isg;
67 # this will remove all script from indexing content
68 $contents =~ s,<script>.+?</script>,,isg;
69 # remap Windows charset to ISO-8859-2
70 $contents =~ tr/šðžèæŠÐŽÈÆ/¹ð¾èæ©Ð®ÈÆ/; # 1250 -> iso8859-2
71 # this will fix badly formatted html in form:
72 # <head><title>some text</title
73 # ></head>
74 # which will confuse indexer (or libxml2?)
75 $contents =~ s/[\n\r]^(>)/$1\n/msg;
76 print CONTENTS $contents;
77 close( CONTENTS );
78
79 if( $response->header("content-type") =~ "text/html" ) {
80 open( LINKS, ">$localpath.links" ) || die( "Could not open links file $localpath.links\n" );
81 my $p = HTML::LinkExtor->new( \&linkcb, $url );
82 $p->parse( $contents );
83
84 close( LINKS );
85 }
86 }
87
88
89 sub linkcb {
90 my($tag, %links) = @_;
91 if (($tag eq "a" || $tag eq "area") && ($links{"href"})) {
92 my $link = $links{"href"};
93
94 #
95 # Remove fragments
96 #
97 $link =~ s/(.*)#.*/$1/;
98
99 #
100 # Remove ../ This is important because the abs() function
101 # can leave these in and cause never ending loops.
102 #
103 $link =~ s/\.\.\///g;
104
105 # hack for apostrophe -- changes URL, but should work for most clients.
106 $link =~ s/'/%27/g;
107
108 # hack for Apache directory listings
109 $link =~ s,/\?[NMSD]=[AD]$,/,g;
110
111 # speedup, skip pictures
112 return if ($link =~ m/\.(gif|jpg|png)/);
113
114 if ($no_parent_url) {
115 if ($link =~ m/$no_parent_url/) {
116 print LINKS "$link $no_parent_url\n";
117 # print STDERR "using $link\n";
118 # } else {
119 # print STDERR "skipping $link\n";
120 }
121 } else {
122 print LINKS "$link\n";
123 }
124 }
125 }
126

Properties

Name Value
cvs2svn:cvs-rev 1.3
svn:executable *

  ViewVC Help
Powered by ViewVC 1.1.26