108 lines
3.5 KiB
Ruby
108 lines
3.5 KiB
Ruby
# typed: strict
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# frozen_string_literal: true
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require "json"
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require "utils/curl"
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module Homebrew
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module Livecheck
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module Strategy
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# The {Pypi} strategy identifies versions of software at pypi.org by
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# using the JSON API endpoint.
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#
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# PyPI URLs have a standard format:
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#
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# * `https://files.pythonhosted.org/packages/<hex>/<hex>/<long_hex>/example-1.2.3.tar.gz`
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#
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# This method uses the `info.version` field in the JSON response to
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# determine the latest stable version.
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#
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# @api public
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class Pypi
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NICE_NAME = "PyPI"
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# The `Regexp` used to extract the package name and suffix (e.g. file
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# extension) from the URL basename.
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FILENAME_REGEX = /
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(?<package_name>.+)- # The package name followed by a hyphen
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.*? # The version string
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(?<suffix>\.tar\.[a-z0-9]+|\.[a-z0-9]+)$ # Filename extension
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/ix
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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?://files\.pythonhosted\.org
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/packages
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(?:/[^/]+)+ # The hexadecimal paths before the filename
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/#{FILENAME_REGEX.source.strip} # The filename
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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 the package name from the provided URL and generates the
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# PyPI JSON API endpoint.
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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 = File.basename(url).match(FILENAME_REGEX)
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return values if match.blank?
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package_name = T.must(match[:package_name]).gsub(/[_-]/, "-")
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values[:url] = "https://pypi.org/project/#{package_name}/#files"
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values[:regex] = %r{href=.*?/packages.*?/#{package_name}[._-]v?(\d+(?:\.\d+)*(?:[._-]post\d+)?)\.t}i
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values
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end
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# Fetches the latest version of the package from the PyPI JSON API.
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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 (optional)
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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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match_data = { matches: {}, regex:, url: }
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generated = generate_input_values(url)
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return match_data if generated.blank?
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match_data[:url] = generated[:url]
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# Parse JSON and get the latest version
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begin
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response = Utils::Curl.curl_output(generated[:url])
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data = JSON.parse(response.stdout, symbolize_names: true)
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latest_version = data.dig(:info, :version)
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rescue => e
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puts "Error fetching version from PyPI: #{e.message}"
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return {}
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end
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# Return the version if found
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return {} if latest_version.blank?
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{ matches: { latest_version => Version.new(latest_version) } }
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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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