mirror of
https://github.com/Homebrew/brew.git
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55 lines
1.9 KiB
Ruby
55 lines
1.9 KiB
Ruby
# typed: false
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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 {Npm} strategy identifies versions of software at
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# registry.npmjs.org by checking the listed versions for a package.
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#
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# npm URLs take one of the following formats:
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#
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# * `https://registry.npmjs.org/example/-/example-1.2.3.tgz`
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# * `https://registry.npmjs.org/@example/example/-/example-1.2.3.tgz`
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#
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# The default regex matches URLs in the `href` attributes of version tags
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# on the "Versions" tab of the package page.
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#
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# @api public
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class Npm
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NICE_NAME = "npm"
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# The `Regexp` used to determine if the strategy applies to the URL.
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URL_MATCH_REGEX = /registry\.npmjs\.org/i.freeze
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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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def self.match?(url)
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URL_MATCH_REGEX.match?(url)
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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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def self.find_versions(url, regex = nil)
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%r{registry\.npmjs\.org/(?<package_name>.+)/-/}i =~ url
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page_url = "https://www.npmjs.com/package/#{package_name}?activeTab=versions"
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# Example regexes:
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# * `%r{href=.*?/package/example/v/(\d+(?:\.\d+)+)"}i`
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# * `%r{href=.*?/package/@example/example/v/(\d+(?:\.\d+)+)"}i`
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regex ||= %r{href=.*?/package/#{Regexp.escape(package_name)}/v/(\d+(?:\.\d+)+)"}i
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Homebrew::Livecheck::Strategy::PageMatch.find_versions(page_url, regex)
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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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