Class: BodyParts

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

Class Method Summary collapse

Class Method Details

.extract_mail_attributes(mail_object) ⇒ Object 



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# File 'lib/bodyparts.rb', line 28

def self.extract_mail_attributes(mail_object)
  if plain_part = mail_object.find_first_mime_type('text/plain')
    part = plain_part
  else
    part = mail_object
  end
  
  if mail_encoding = part['content_transfer_encoding'] || mail_encoding = mail_object['content_transfer_encoding']
    content_encoding = mail_encoding.encoding
  else
    content_encoding = "not known"
  end

  {:content_encoding => content_encoding, :body => part.body.raw_source}
end

.extract_tmail_attributes(tmail_object) ⇒ Object 



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# File 'lib/bodyparts.rb', line 12

def self.extract_tmail_attributes(tmail_object)
  if mail_encoding = tmail_object['content_transfer_encoding']
    content_encoding = mail_encoding.to_s.downcase
  else
    content_encoding = "not known"
  end
  
  body = if tmail_object.multipart?
    tmail_object.parts.first.body
  else
    tmail_object.body
  end
  
  {:content_encoding => content_encoding, :body => body}
end

.find_reply_in(email) ⇒ Object 



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# File 'lib/bodyparts.rb', line 44

def self.find_reply_in(email)
  email = Mail::Message.new(email) if email.is_a? String
  
  mail_attributes = case email.class.to_s
    when "TMail::Mail" then extract_tmail_attributes(email)
    when "Mail::Message" then extract_mail_attributes(email)
    else raise "You must pass in either a TMail or Mail object or raw email source text"
  end
  
  raw_body = mail_attributes[:body]
  body = case mail_attributes[:content_encoding]
    when "base64" then Base64.decode64 raw_body
    when "quoted-printable" then Mail::Encodings::QuotedPrintable.decode raw_body
    else raw_body
  end

  matches = rules.map {|rule| body.match(rule[:reply_delimiter])}.compact!
  
  unless matches.empty?
    match = matches.sort_by {|m| m.begin(0)}.first
    new_message = body[0, match.begin(0)]
    {:new_message => new_message.strip, :rest_of_thread => body[match.begin(0)..-1].strip}
  else
    {:new_message => body, :rest_of_thread => nil}
  end
end

.rules ⇒ Object 



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# File 'lib/bodyparts.rb', line 5

def self.rules
   [{ :server => 'Gmail', :reply_delimiter => /^On.*?wrote:.$/m },
    { :server => 'Yahoo! Mail', :reply_delimiter => /^_+\r\nFrom:/ },
    { :server => 'Microsoft Live Mail/Hotmail', :reply_delimiter =>  /\r\n\r\n(Date|Subject):/ },
    { :server => 'Outlook Express/AOL Webmail', :reply_delimiter =>  /^-+.*Original Message.*-+/ }]
end