Sha256: aea7d3c00d333a379e2e4d46c15cd253cbd933460084b40de1d5ef4e144adbc1
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Size: 1.01 KB
Versions: 9
Compression:
Stored size: 1.01 KB
Contents
require "nokogiri"
require "open-uri"
module Rgversion
class Spider
def initialize(gems, selector)
raise NoArguments, error_messages(:arguments) if gems.blank?
@gems = gems
@selector = selector
end
def walk
lines = []
errors = []
@gems.each do |gem|
begin
lines << grab_version(gem)
rescue OpenURI::HTTPError
errors << "#{gem} not found"
end
end
{ gems: lines, errors: errors }
end
private
def error_messages(key)
{
arguments: "No gems passed as arguments. Try to use like this:\nrgversion rails sinatra",
selector: "Selector #{@selector} doesn't exists on the page.\nRgversion should be updated."
}[key].red
end
def grab_version(gem)
gem_url = "https://rubygems.org/gems/#{gem}"
gem_page = Nokogiri::HTML(open(gem_url))
raise WrongSelector, error_messages(:selector) if gem_page.at(@selector).nil?
gem_page.at(@selector)["value"]
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems