111 lines
3.5 KiB
Ruby
111 lines
3.5 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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require "bundle_version"
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require_relative "page_match"
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module Homebrew
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module Livecheck
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module Strategy
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# The {Sparkle} strategy fetches content at a URL and parses
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# it as a Sparkle appcast in XML format.
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#
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# @api private
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class Sparkle
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extend T::Sig
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# A priority of zero causes livecheck to skip the strategy. We only
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# apply {Sparkle} using `strategy :sparkle` in a `livecheck` block,
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# as we can't automatically determine when this can be successfully
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# applied to a URL without fetching the content.
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PRIORITY = 0
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# The `Regexp` used to determine if the strategy applies to the URL.
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URL_MATCH_REGEX = %r{^https?://}i.freeze
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# Whether the strategy can be applied to the provided URL.
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# The strategy will technically match any HTTP URL but is
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# only usable with a `livecheck` block containing a regex
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# or block.
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sig { params(url: String).returns(T::Boolean) }
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def self.match?(url)
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URL_MATCH_REGEX.match?(url)
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end
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Item = Struct.new(:title, :url, :bundle_version, :short_version, :version, keyword_init: true) do
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extend T::Sig
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extend Forwardable
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delegate version: :bundle_version
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delegate short_version: :bundle_version
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end
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sig { params(content: String).returns(T.nilable(Item)) }
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def self.item_from_content(content)
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require "nokogiri"
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xml = Nokogiri::XML(content)
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xml.remove_namespaces!
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items = xml.xpath("//rss//channel//item").map do |item|
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enclosure = (item > "enclosure").first
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url = enclosure&.attr("url")
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short_version = enclosure&.attr("shortVersionString")
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version = enclosure&.attr("version")
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url ||= (item > "link").first&.text
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short_version ||= (item > "shortVersionString").first&.text&.strip
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version ||= (item > "version").first&.text&.strip
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title = (item > "title").first&.text&.strip
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if match = title&.match(/(\d+(?:\.\d+)*)\s*(\([^)]+\))?\Z/)
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short_version ||= match[1]
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version ||= match[2]
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end
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bundle_version = BundleVersion.new(short_version, version) if short_version || version
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data = {
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title: title,
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url: url,
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bundle_version: bundle_version,
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short_version: bundle_version&.short_version,
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version: bundle_version&.version,
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}.compact
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Item.new(**data) unless data.empty?
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end.compact
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items.max_by(&:bundle_version)
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end
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# Checks the content at the URL for new versions.
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sig { params(url: String, regex: T.nilable(Regexp)).returns(T::Hash[Symbol, T.untyped]) }
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def self.find_versions(url, regex, &block)
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raise ArgumentError, "The #{T.must(name).demodulize} strategy does not support a regex." if regex
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match_data = { matches: {}, regex: regex, url: url }
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match_data.merge!(Strategy.page_content(url))
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content = match_data.delete(:content)
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if (item = item_from_content(content))
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match = if block
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block.call(item)&.to_s
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else
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item.bundle_version&.nice_version
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end
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match_data[:matches][match] = Version.new(match) if match
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end
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match_data
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end
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end
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end
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end
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end
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