Class: PolyrexFeedReader

Inherits:
Object
  • Object
show all
Defined in:
lib/polyrex-feed-reader.rb

Instance Method Summary collapse

Constructor Details

#initialize(polyrex) ⇒ PolyrexFeedReader

Returns a new instance of PolyrexFeedReader.



20
21
22
23
24
 
# File 'lib/polyrex-feed-reader.rb', line 20

def initialize(polyrex)

  @polyrex = polyrex

end

Instance Method Details

#feeds_to_html ⇒ Object 



26
27
28
29
30
31
32
33
34
 
# File 'lib/polyrex-feed-reader.rb', line 26

def feeds_to_html()

  feeds do |feed, filename|

    next if nothing_new? feed
    puts "transforming %s " % filename
    xsltproc 'dynarex-feed.xsl', File.read(filename), filename.sub(/xml$/,'html')
  end
end

#fetch_feeds ⇒ Object 



36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/polyrex-feed-reader.rb', line 36

def fetch_feeds()

w3centities =<<EOF
<!DOCTYPE stylesheet [
<!ENTITY % w3centities-f PUBLIC "-//W3C//ENTITIES Combined Set//EN//XML"
    "http://www.w3.org/2003/entities/2007/w3centities-f.ent">
%w3centities-f;
]>
EOF

  feeds do |feed, filename|

    next if nothing_new? feed
    puts "fetching %s " % feed.rss_url.inspect
    
    rtd = RSStoDynarex.new feed.rss_url
    dynarex = rtd.to_dynarex

    dynarex.save(filename) do |xml| 
      a = xml.lines.to_a
      line1 = a.shift
      a.unshift %Q{<?xml-stylesheet title="XSL_formatting" type="text/xsl" href="dynarex-feed.xsl"?>\n}
      a.unshift w3centities
      a.unshift line1
      a.join
    end    

  end

end

#refresh ⇒ Object Also known as: update_doc 



67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
 
# File 'lib/polyrex-feed-reader.rb', line 67

def refresh

  feeds do |feed, filename|

    d = Dynarex.new filename

    feed.last_accessed = datetimestamp()
    feed.last_modified = datetimestamp() if feed.last_modified.empty?
    feed.xhtml = filename

    items = d.to_h[0..2]

    if feed.records.length > 0 and \
                            items.first[:title] == feed.item[0].title then
      feed.recent = recency(feed.last_modified)
      next 
    end

    puts 'adding : ' + filename.inspect

    feed.recent = 'a_hot'
    feed.records.remove_all
    items.each.with_index do |x, i|

      h = {
        title: x[:title],
        link:  x[:link],
        local_link: "%s#%s" % [filename.sub(/xml$/,'html'),i]
      }

      if i == 0 and feed.important != 'n' then

        raw_desc = CGI.unescapeHTML(x[:description]).gsub(/<\/?[^>]*>/, "")
        desc = raw_desc.length > 300 ? raw_desc[0..296] + ' ...' : raw_desc
        h[:description] = desc
      end

      feed.create.item h
    end

    feed.last_modified = datetimestamp()

  end
end

#save_css(filepath = 'feeds.css') ⇒ Object 



114
115
116
117
118
119
120
121
 
# File 'lib/polyrex-feed-reader.rb', line 114

def save_css(filepath='feeds.css')

  lib = File.dirname(__FILE__)
  css_buffer = File.read(lib + '/feeds.css')
  #css_buffer = File.read('feeds.css')

  File.write filepath, css_buffer
end

#save_html(filepath = 'feeds.html') ⇒ Object 



123
124
125
 
# File 'lib/polyrex-feed-reader.rb', line 123

def save_html(filepath='feeds.html')
  xsltproc 'feeds.xsl', @polyrex.to_xml, filepath
end

#save_xml(filepath = 'feeds.xml') ⇒ Object 



127
128
129
 
# File 'lib/polyrex-feed-reader.rb', line 127

def save_xml(filepath='feeds.xml')
  @polyrex.save filepath, pretty: true
end