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Contents
module MetaInspector
module Parsers
class TextsParser < Base
delegate [:parsed, :meta] => :@main_parser
# Returns the parsed document title, from the content of the <title> tag
# within the <head> section.
def title
@title ||= parsed.css('head title').inner_text rescue nil
end
def best_title
@best_title = meta['og:title'] if @main_parser.host =~ /\.youtube\.com$/
@best_title ||= find_best_title
end
# A description getter that first checks for a meta description
# and if not present will guess by looking at the first paragraph
# with more than 120 characters
def description
meta['description'] || secondary_description
end
private
# Look for candidates and pick the longest one
def find_best_title
candidates = [
parsed.css('head title'),
parsed.css('body title'),
meta['og:title'],
parsed.css('h1').first
]
candidates.flatten!
candidates.compact!
candidates.map! { |c| (c.respond_to? :inner_text) ? c.inner_text : c }
candidates.map! { |c| c.strip }
return nil if candidates.empty?
candidates.map! { |c| c.gsub(/\s+/, ' ') }
candidates.uniq!
candidates.sort_by! { |t| -t.length }
candidates.first
end
# Look for the first <p> block with 120 characters or more
def secondary_description
first_long_paragraph = parsed.search('//p[string-length() >= 120]').first
first_long_paragraph ? first_long_paragraph.text : ''
end
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems