/[swish]/trunk/spider/filter.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 55 by dpavlin, Tue Jan 20 18:40:06 2004 UTC revision 56 by dpavlin, Fri Jan 23 13:10:40 2004 UTC
# Line 37  sub filter { Line 37  sub filter {
37    
38          }          }
39    
40            # is second argument collection?
41            my $collection = shift || return $contents;
42    
43            # construct new title (from various parts of DocBook if available)
44            my $new_title;
45    
46            if ($contents =~ m,<!--SafTocEntry="([^"]+)"-->,is) {
47                    $new_title = $1;
48            } elsif ($contents =~ m,<h\d\sclass="docPartTitle"[^>]*>([^<]+)</h\d>,is) {
49                    $new_title = $1;
50            } elsif ($contents =~ m,<h\d\sclass="docChapterTitle"[^>]*>([^<]+)</h\d>,is) {
51                    $new_title = $1;
52            } elsif ($contents =~ m,<h\d\sclass="docSection1Title"[^>]*>([^<]+)</h\d>,is) {
53                    $new_title = $1;
54            } else {
55                    if ($contents =~ m,<title>([^<]+)</title>,is) {
56                            $new_title = $1;
57                    } elsif ($contents =~ m,<h\d[^>]*>([^<]+)</h\d>,is) {
58                            $new_title = $1;
59                    }
60            }
61    
62            if ($new_title) {
63                    # check if new title is same as collection name
64                    my ($a,$b) = ($new_title,$collection);
65                    $a =~ s/([^a-zA-Z])+/ /gs;
66                    $b =~ s/([^a-zA-Z])+/ /gs;
67                    if ($a =~ m/$b/i) {
68                            $new_title = $collection;
69                    } else {
70                            $new_title = "$collection :: $new_title";
71                    }
72            } else {
73                    # fall-back to collection title
74                    $new_title = $collection;
75            }
76    
77            $new_title =~ s/\s\s+/ /g;
78    
79            if ($contents =~ s,<title>(.*)</title>,$new_title,is) {
80                    print STDERR "replace title '$1' with '$new_title'\n";
81            } else {
82                    print STDERR "adding new title '$new_title'\n";
83                    # try to insert after <head>, <html> or at top
84                    $contents =~ s,(<head>),$1<title>$new_title</title>,is ||
85                    $contents =~ s,(<html>),$1<title>$new_title</title>,is ||
86                    $contents =~ s,^,<title>$new_title</title>,;
87            }
88    
89          return $contents;          return $contents;
90  }  }
91    

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