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Contents
# frozen_string_literal: true
require 'nokogiri'
require 'aranha/parsers/base'
require 'aranha/parsers/html/node/default'
module Aranha
module Parsers
module Html
class Base < ::Aranha::Parsers::Base
class << self
def fields
@fields ||= []
@fields.dup
end
def field(name, type, xpath)
@fields ||= []
@fields << Field.new(name, type, xpath)
end
# @param node [Nokogiri::XML::Node]
# @return [Aranha::Parsers::Html::Base]
def from_node(node)
from_string(node.to_html)
end
# @param node [String]
# @param klass [String]
# @return [String]
def xpath_contains_class(klass, node = '@class')
"contains(concat(' ', normalize-space(#{node}), ' '), ' #{klass} ')"
end
# @param haystack [String]
# @param needle [String]
# @return [String]
def xpath_ends_with(haystack, needle)
"substring(#{haystack}, string-length(#{haystack}) - string-length(#{needle}) + 1) " \
"= #{needle}"
end
Field = Struct.new(:name, :type, :xpath)
end
def nokogiri
@nokogiri ||= Nokogiri::HTML(content, &:noblanks)
end
protected
def node_parser_class
::Aranha::Parsers::Html::Node::Default
end
private
def node_parser
@node_parser ||= node_parser_class.new(fields)
end
def fields
self.class.fields.map { |f| [f.name, f.type, f.xpath] }
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems