102 lines
3.9 KiB
Ruby

# typed: true
# frozen_string_literal: true
module Homebrew
module Livecheck
module Strategy
# The {GithubLatest} strategy identifies versions of software at
# github.com by checking a repository's "latest" release using the
# GitHub API.
#
# GitHub URLs take a few different formats:
#
# * `https://github.com/example/example/releases/download/1.2.3/example-1.2.3.tar.gz`
# * `https://github.com/example/example/archive/v1.2.3.tar.gz`
# * `https://github.com/downloads/example/example/example-1.2.3.tar.gz`
#
# {GithubLatest} should only be used when the upstream repository has a
# "latest" release for a suitable version and the strategy is necessary
# or appropriate (e.g. the formula/cask uses a release asset or the
# {Git} strategy returns an unreleased version). The strategy can only
# be applied by using `strategy :github_latest` in a `livecheck` block.
#
# The default regex identifies versions like `1.2.3`/`v1.2.3` in a
# release's tag or title. This is a common tag format but a modified
# regex can be provided in a `livecheck` block to override the default
# if a repository uses a different format (e.g. `1.2.3d`, `1.2.3-4`,
# etc.).
#
# @api public
class GithubLatest
NICE_NAME = "GitHub - Latest"
# A priority of zero causes livecheck to skip the strategy. We do this
# for {GithubLatest} so we can selectively apply the strategy using
# `strategy :github_latest` in a `livecheck` block.
PRIORITY = 0
# Whether the strategy can be applied to the provided URL.
#
# @param url [String] the URL to match against
# @return [Boolean]
sig { params(url: String).returns(T::Boolean) }
def self.match?(url)
GithubReleases.match?(url)
end
# Extracts information from a provided URL and uses it to generate
# various input values used by the strategy to check for new versions.
# Some of these values act as defaults and can be overridden in a
# `livecheck` block.
#
# @param url [String] the URL used to generate values
# @return [Hash]
sig { params(url: String).returns(T::Hash[Symbol, T.untyped]) }
def self.generate_input_values(url)
values = {}
match = url.delete_suffix(".git").match(GithubReleases::URL_MATCH_REGEX)
return values if match.blank?
values[:url] = "https://api.github.com/repos/#{match[:username]}/#{match[:repository]}/releases/latest"
values[:username] = match[:username]
values[:repository] = match[:repository]
values
end
# Generates the GitHub API URL for the repository's "latest" release
# and identifies the version from the JSON response.
#
# @param url [String] the URL of the content to check
# @param regex [Regexp] a regex used for matching versions in content
# @return [Hash]
sig {
params(
url: String,
regex: Regexp,
_unused: T.nilable(T::Hash[Symbol, T.untyped]),
block: T.nilable(Proc),
).returns(T::Hash[Symbol, T.untyped])
}
def self.find_versions(url:, regex: GithubReleases::DEFAULT_REGEX, **_unused, &block)
match_data = { matches: {}, regex: regex, url: url }
generated = generate_input_values(url)
return match_data if generated.blank?
match_data[:url] = generated[:url]
release = GitHub.get_latest_release(generated[:username], generated[:repository])
GithubReleases.versions_from_content(release, regex, &block).each do |match_text|
match_data[:matches][match_text] = Version.new(match_text)
end
match_data
end
end
end
GitHubLatest = Homebrew::Livecheck::Strategy::GithubLatest
end
end