Class: RSS2Mail::Feed

Inherits:
Object
  • Object
show all
Defined in:
lib/rss2mail/feed.rb

Constant Summary collapse

HOST = 
ENV['HOSTNAME'] || ENV['HOST'] || %x{hostname}.chomp

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(feed, options = {}) ⇒ Feed

Returns a new instance of Feed.

Raises:

  • (TypeError) 


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# File 'lib/rss2mail/feed.rb', line 44

def initialize(feed, options = {})
  raise TypeError, "Hash expected, got #{feed.class}" unless feed.is_a?(Hash)

  @feed    = feed
  @simple  = feed[:simple]
  @updated = feed[:updated]

  @reload  = options[:reload]
  @verbose = options[:verbose]
  @debug   = options[:debug]

  required = [:url, :to, :title]
  required.delete_if { |i| feed.has_key?(i) }

  raise ArgumentError, "Feed incomplete: #{required.join(', ')} missing" unless required.empty?
end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/rss2mail/feed.rb', line 42

def content
  @content
end

#debug ⇒ Object (readonly)

Returns the value of attribute debug.



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# File 'lib/rss2mail/feed.rb', line 42

def debug
  @debug
end

#feed ⇒ Object (readonly)

Returns the value of attribute feed.



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# File 'lib/rss2mail/feed.rb', line 42

def feed
  @feed
end

#reload ⇒ Object (readonly)

Returns the value of attribute reload.



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# File 'lib/rss2mail/feed.rb', line 42

def reload
  @reload
end

#rss ⇒ Object (readonly)

Returns the value of attribute rss.



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# File 'lib/rss2mail/feed.rb', line 42

def rss
  @rss
end

#simple ⇒ Object (readonly)

Returns the value of attribute simple.



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# File 'lib/rss2mail/feed.rb', line 42

def simple
  @simple
end

#updated ⇒ Object (readonly)

Returns the value of attribute updated.



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# File 'lib/rss2mail/feed.rb', line 42

def updated
  @updated
end

#verbose ⇒ Object (readonly)

Returns the value of attribute verbose.



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# File 'lib/rss2mail/feed.rb', line 42

def verbose
  @verbose
end

Instance Method Details

#deliver(templates) ⇒ Object 



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# File 'lib/rss2mail/feed.rb', line 61

def deliver(templates)
  unless mail_cmd = File.which(_mail_cmd = 'mail')
    raise "Mail command not found: #{_mail_cmd}"
  end

  to = [*feed[:to]]

  if to.empty?
    log 'No one to send to'
    return
  end

  unless get && parse
    log 'Nothing to send'
    return
  end

  if rss.items.empty?
    log 'No new items'
    return
  end

  content_type = feed[:content_type] || 'text/html'
  encoding     = feed[:encoding]     || 'UTF-8'

  feed[:sent] ||= []

  content_type_header = "Content-type: #{content_type}; charset=#{encoding}"

  unless template = templates[content_type[/\/(.*)/, 1]]
    log "Template not found: #{content_type}"
    return
  end

  cmd = [
    mail_cmd,
    '-e',
    "-a '#{content_type_header}'",
    "-a 'From: rss2mail@#{HOST}'",
    "-s '[#{feed[:title]}] \#{subject}'",
    *to
  ].join(' ')

  sent = 0

  rss.items.each { |item|
    title       = item.title
    link        = item.link
    description = item.description(feed[:unescape_html])
    date        = item.date
    author      = item.author
    body        = item.body(feed[:body])
    subject     = item.subject

    log "#{title} / #{date} [#{author}]", debug
    log "<#{link}>", debug

    send_mail(cmd.evaluate(binding), ERB.new(template).result(binding)) {
      feed[:sent] << link
      sent += 1
    }
  }

  # only keep the last 100 entries
  feed[:sent].slice!(0...-100)

  log "#{sent} items sent"
  sent
end