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Contents
module Wovnrb
module Helpers
module NokogumboHelper
def parse_html(html_string, encoding = 'UTF-8')
if /<html/i.match?(html_string.strip[0..999])
d = Nokogiri::HTML5(html_string)
d.encoding = encoding
d
else
parse_fragment(html_string, encoding)
end
end
# https://www.rubydoc.info/gems/nokogumbo/Nokogiri/HTML5#fragment-class_method
#
# Nokogumbo does not properly support parsing fragment and the current
# implementation of Nokogiri::HTML5.fragment does not handle encoding
# (second line of code below).
def parse_fragment(html_string, encoding = 'UTF-8')
doc = Nokogiri::HTML5.parse(html_string)
doc.encoding = encoding
fragment = Nokogiri::HTML::DocumentFragment.new(doc)
if doc.children.length != 1 or doc.children.first.name != 'html'
# no HTML? Return document as is
fragment = doc
else
# examine children of HTML element
children = doc.children.first.children
# head is always first. If present, take children but otherwise
# ignore the head element
if children.length > 0 and doc.children.first.name = 'head'
fragment << children.shift.children
end
# body may be next, or last. If found, take children but otherwise
# ignore the body element. Also take any remaining elements, taking
# care to preserve order.
if children.length > 0 and doc.children.first.name = 'body'
fragment << children.shift.children
fragment << children
elsif children.length > 0 and doc.children.last.name = 'body'
body = children.pop
fragment << children
fragment << body.children
else
fragment << children
end
end
# return result
fragment
end
module_function :parse_html, :parse_fragment
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems