I am using the fabulous eeepub gem to convert a folder full of HTML
files into a valid epub package. It works swimmingly, except I get the
following errors with each turn of my loop:
Minogue_0089 split into chapters...
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/
container_item.rb:19: warning: instance variable @depth not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/
container_item.rb:19: warning: instance variable @total_page_count not
initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/
container_item.rb:19: warning: instance variable @max_page_number not
initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/maker.rb:
101: warning: instance variable @languages not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/maker.rb:
102: warning: instance variable @subjects not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/maker.rb:
103: warning: instance variable @descriptions not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/maker.rb:
104: warning: instance variable @rightss not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/maker.rb:
105: warning: instance variable @relations not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/
container_item.rb:19: warning: instance variable @unique_identifier
not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/
container_item.rb:19: warning: instance variable @toc not initialized
/opt/local/lib/ruby/gems/1.8/gems/eeepub-0.6.1/lib/eeepub/opf.rb:42:
warning: instance variable @spine not initialized
created Minogue_0089.epub
I see these variables in the respective places where they are defined
-- in the initialize method of the various classes -- but the really
funny thing is that I don''t get these errors when I run the example
code that comes with the gem. That code begins with a line I don''t
recognize or understand:
$:.unshift(File.dirname(__FILE__) + ''/../lib'')
followed by:
require ''rubygems''
require ''eeepub''
I am running this from the command line, and my script begins with:
#!/usr/bin/env ruby -wKU
require ''rubygems''
require ''nokogiri''
require ''cgi''
require ''fileutils''
require ''open-uri''
require ''eeepub''
Can anyone explain what the $:.unshift bit does? And is there a way to
just hide these warnings? The script seems to work just fine.
Walter
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