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require 'html'
Dir[File.dirname(__FILE__) + '/adapters/*.rb'].each do |file|
require file
end
module AttachmentToHTML
extend self
def to_html(attachment, opts = {})
adapter = adapter_for(attachment).new(attachment, opts)
html = HTML.new(adapter)
if html.success?
html
else
fallback = fallback_adapter_for(attachment).new(attachment, opts)
HTML.new(fallback)
end
end
private
def adapter_for(attachment)
case attachment.content_type
when 'text/plain' then Adapters::Text
when 'application/pdf' then Adapters::PDF
when 'application/rtf' then Adapters::RTF
else
fallback_adapter_for(attachment)
end
end
def fallback_adapter_for(attachment)
if attachment.has_google_docs_viewer?
Adapters::GoogleDocsViewer
else
Adapters::CouldNotConvert
end
end
end
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