114 lines
4.0 KiB
Ruby
114 lines
4.0 KiB
Ruby
# typed: strict
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# frozen_string_literal: true
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module Homebrew
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module Livecheck
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module Strategy
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# The {Gnome} strategy identifies versions of software at gnome.org by
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# checking the available downloads found in a project's `cache.json`
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# file.
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#
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# GNOME URLs generally follow a standard format:
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#
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# * `https://download.gnome.org/sources/example/1.2/example-1.2.3.tar.xz`
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#
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# Before version 40, GNOME used a version scheme where unstable releases
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# were indicated with a minor that's 90+ or odd. The newer version scheme
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# uses trailing alpha/beta/rc text to identify unstable versions
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# (e.g. `40.alpha`).
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#
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# When a regex isn't provided in a `livecheck` block, the strategy uses
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# a default regex that matches versions which don't include trailing text
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# after the numeric version (e.g. `40.0` instead of `40.alpha`) and it
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# selectively filters out unstable versions below 40 using the rules for
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# the older version scheme.
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#
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# @api public
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class Gnome
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NICE_NAME = "GNOME"
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# The `Regexp` used to determine if the strategy applies to the URL.
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URL_MATCH_REGEX = %r{
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^https?://download\.gnome\.org
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/sources
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/(?<package_name>[^/]+)/ # The GNOME package name
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}ix
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# Whether the strategy can be applied to the provided URL.
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#
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# @param url [String] the URL to match against
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# @return [Boolean]
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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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# Extracts information from a provided URL and uses it to generate
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# various input values used by the strategy to check for new versions.
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# Some of these values act as defaults and can be overridden in a
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# `livecheck` block.
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#
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# @param url [String] the URL used to generate values
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# @return [Hash]
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sig { params(url: String).returns(T::Hash[Symbol, T.untyped]) }
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def self.generate_input_values(url)
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values = {}
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match = url.match(URL_MATCH_REGEX)
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return values if match.blank?
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values[:url] = "https://download.gnome.org/sources/#{match[:package_name]}/cache.json"
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regex_name = Regexp.escape(T.must(match[:package_name])).gsub("\\-", "-")
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# GNOME archive files seem to use a standard filename format, so we
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# count on the delimiter between the package name and numeric
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# version being a hyphen and the file being a tarball.
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values[:regex] = /#{regex_name}-(\d+(?:\.\d+)*)\.t/i
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values
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end
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# Generates a URL and regex (if one isn't provided) and passes them
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# to {PageMatch.find_versions} to identify versions in the content.
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#
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# @param url [String] the URL of the content to check
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# @param regex [Regexp] a regex used for matching versions in content
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# @return [Hash]
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sig {
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params(
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url: String,
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regex: T.nilable(Regexp),
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unused: T.untyped,
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block: T.nilable(Proc),
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).returns(T::Hash[Symbol, T.untyped])
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}
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def self.find_versions(url:, regex: nil, **unused, &block)
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generated = generate_input_values(url)
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version_data = PageMatch.find_versions(
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url: generated[:url],
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regex: regex || generated[:regex],
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**unused,
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&block
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)
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if regex.blank?
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# Filter out unstable versions using the old version scheme where
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# the major version is below 40.
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version_data[:matches].reject! do |_, version|
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next if version.major >= 40
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next if version.minor.blank?
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(version.minor.to_i.odd? || version.minor >= 90) ||
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(version.patch.present? && version.patch >= 90)
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end
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end
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version_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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