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

Inherits:
Object
  • Object
show all
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
DEFAULT_REGEX =

The default regex used to identify the latest version when a regex isn’t provided.

%r{class="[^"]*version[^"]*"[^>]*>\s*Latest version is (.+)\s*</}

Class Method Summary collapse

Class Method Details

.find_versions(url:, regex: DEFAULT_REGEX, **unused, &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) (defaults to: DEFAULT_REGEX)

    a regex used for matching versions in content

  • unused (T.untyped)
  • block (Proc, nil)

Returns:



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# File 'livecheck/strategy/launchpad.rb', line 79

def self.find_versions(url:, regex: DEFAULT_REGEX, **unused, &block)
  generated = generate_input_values(url)

  PageMatch.find_versions(url: generated[:url], regex: regex, **unused, &block)
end

.generate_input_values(url) ⇒ Hash{Symbol => T.untyped}

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.

Parameters:

  • url (String)

    the URL used to generate values

Returns:



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# File 'livecheck/strategy/launchpad.rb', line 53

def self.generate_input_values(url)
  values = {}

  match = url.match(URL_MATCH_REGEX)
  return values if match.blank?

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

  values
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 41

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