Class: Homebrew::Livecheck::Strategy::Gnome

Inherits:
Object
  • Object
show all
Defined in:
Library/Homebrew/livecheck/strategy/gnome.rb

Overview

The Gnome strategy identifies versions of software at gnome.org by checking the available downloads found in a project's cache.json file.

GNOME URLs generally follow a standard format:

  • https://download.gnome.org/sources/example/1.2/example-1.2.3.tar.xz

The default regex restricts matching to filenames containing a version with an even-numbered minor below 90, as these are stable releases.

Constant Summary collapse

NICE_NAME = 
"GNOME"
URL_MATCH_REGEX =

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

/download\.gnome\.org/i.freeze

Class Method Summary collapse

Class Method Details

.find_versions(url, regex = nil) ⇒ Hash

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: nil) —

    a regex used for matching versions in content

Returns:

  • (Hash) 

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# File 'Library/Homebrew/livecheck/strategy/gnome.rb', line 39

def self.find_versions(url, regex = nil)
  %r{/sources/(?<package_name>.*?)/}i =~ url

  page_url = "https://download.gnome.org/sources/#{package_name}/cache.json"

  # GNOME archive files seem to use a standard filename format, so we
  # count on the delimiter between the package name and numeric version
  # being a hyphen and the file being a tarball.
  #
  # The `([0-8]\d*?)?[02468]` part of the regex is intended to restrict
  # matching to versions with an even-numbered minor, as these are
  # stable releases. This also excludes x.90+ versions, which are
  # development versions. See: https://www.gnome.org/gnome-3/source/
  #
  # Example regex: `/example-(\d+\.([0-8]\d*?)?[02468](?:\.\d+)*?)\.t/i`
  regex ||= /#{Regexp.escape(package_name)}-(\d+\.([0-8]\d*?)?[02468](?:\.\d+)*?)\.t/i

  Homebrew::Livecheck::Strategy::PageMatch.find_versions(page_url, regex)
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 'Library/Homebrew/livecheck/strategy/gnome.rb', line 29

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