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# typed: false
# frozen_string_literal: true
require "bundle_version"
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require_relative "page_match"
module Homebrew
module Livecheck
module Strategy
# The {Sparkle} strategy fetches content at a URL and parses
# its contents as a Sparkle appcast in XML format.
#
# @api private
class Sparkle
extend T::Sig
NICE_NAME = "Sparkle"
PRIORITY = 1
# Whether the strategy can be applied to the provided URL.
sig { params(url: String).returns(T::Boolean) }
def self.match?(url)
return false unless url.match?(%r{^https?://})
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xml = url.end_with?(".xml")
xml ||= begin
headers = Strategy.page_headers(url)
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content_type = headers["content-type"]&.split(";", 2)&.first
["application/xml", "text/xml"].include?(content_type)
end
return false unless xml
contents = Strategy.page_contents(url)
contents.match?(%r{https?://www.andymatuschak.org/xml-namespaces/sparkle})
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end
# Checks the content at the URL for new versions.
sig { params(url: String, regex: T.nilable(Regexp)).returns(T::Hash[Symbol, T.untyped]) }
def self.find_versions(url, regex, &block)
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raise ArgumentError, "The #{NICE_NAME} strategy does not support regular expressions." if regex
require "nokogiri"
match_data = { matches: {}, regex: regex, url: url }
contents = Strategy.page_contents(url)
xml = Nokogiri.parse(contents)
xml.remove_namespaces!
enclosure =
xml.xpath("//rss//channel//item//enclosure")
.map { |e| { url: e["url"], version: BundleVersion.new(e["shortVersionString"], e["version"]) } }
.max_by { |e| e[:version] }
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if enclosure
match = if block
enclosure[:version] = enclosure[:version].nice_version
block.call(enclosure).to_s
else
enclosure[:version].nice_version
end
match_data[:matches][match] = Version.new(match)
end
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match_data
end
end
end
end
end