class Plumnailer::ImgParser
Fetch image data urls, load into Magick::Image and set some additional fields.
Attributes
fetcher[RW]
Public Class Methods
new(fetcher)
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# File lib/plumnailer/img_parser.rb, line 11 def initialize(fetcher) @fetcher = fetcher end
Public Instance Methods
parse(img_urls)
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Parse image data from one or more urls.
# File lib/plumnailer/img_parser.rb, line 16 def parse(img_urls) if img_urls.respond_to?(:inject) cache = {} img_urls.inject([]) do |memo,u| # nil values should be cached memo << (cache.include?(u) ? cache[u] : (cache[u] = parse_one(u))) end.compact else parse_one i end end
parse_one(img_url)
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Fetch image data from a url, load into Magick::ImageList and set some additional fields.
# File lib/plumnailer/img_parser.rb, line 30 def parse_one(img_url) begin img_data = fetcher.fetch(img_url) img = Magick::ImageList.new.from_blob(img_data).extend( Plumnailer::WebImage) img.source_url = img_url img rescue Exception nil end end