Class: Homebrew::Livecheck::Strategy::Launchpad

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Defined in:
livecheck/strategy/launchpad.rb

Overview

The Launchpad strategy identifies versions of software at launchpad.net by checking the main page for a project.

Launchpad URLs take a variety of formats but all the current formats contain the project name as the first part of the URL path:

  • https://launchpad.net/example/1.2/1.2.3/+download/example-1.2.3.tar.gz
  • https://launchpad.net/example/trunk/1.2.3/+download/example-1.2.3.tar.gz
  • https://code.launchpad.net/example/1.2/1.2.3/+download/example-1.2.3.tar.gz

The default regex identifies the latest version within an HTML element found on the main page for a project:

<div class="version">
  Latest version is 1.2.3
</div>

Constant Summary collapse

URL_MATCH_REGEX =

The Regexp used to determine if the strategy applies to the URL.

%r{
  ^https?://(?:[^/]+?\.)*launchpad\.net
  /(?<project_name>[^/]+) # The Launchpad project name
}ix.freeze

Class Method Summary collapse

Class Method Details

.find_versions(url, regex, cask: nil, &block) ⇒ Hash{Symbol => T.untyped}

Generates a URL and regex (if one isn’t provided) and passes them to PageMatch.find_versions to identify versions in the content.

Parameters:

  • url (String)

    the URL of the content to check

  • regex (Regexp, nil)

    a regex used for matching versions in content

  • cask (Cask::Cask, nil) (defaults to: nil)
  • block (T.proc.params(arg0: String).returns(T.any(T::Array[String], String)), nil)

Returns:



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# File 'livecheck/strategy/launchpad.rb', line 56

def self.find_versions(url, regex, cask: nil, &block)
  match = url.match(URL_MATCH_REGEX)

  # The main page for the project on Launchpad
  page_url = "https://launchpad.net/#{match[:project_name]}"

  # The default regex is the same for all URLs using this strategy
  regex ||= %r{class="[^"]*version[^"]*"[^>]*>\s*Latest version is (.+)\s*</}

  PageMatch.find_versions(page_url, regex, cask: cask, &block)
end

.match?(url) ⇒ Boolean

Whether the strategy can be applied to the provided URL.

Parameters:

  • url (String)

    the URL to match against

Returns:

  • (Boolean)


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# File 'livecheck/strategy/launchpad.rb', line 38

def self.match?(url)
  URL_MATCH_REGEX.match?(url)
end