Class: Homebrew::Livecheck::Strategy::Gnu
- Defined in:
- livecheck/strategy/gnu.rb
Overview
The Gnu strategy identifies versions of software at gnu.org by checking directory listing pages.
GNU URLs use a variety of formats:
- Archive file URLs:
https://ftp.gnu.org/gnu/example/example-1.2.3.tar.gz
https://ftp.gnu.org/gnu/example/1.2.3/example-1.2.3.tar.gz
- Homepage URLs:
https://www.gnu.org/software/example/
https://example.gnu.org
There are other URL formats that this strategy currently doesn’t support:
https://ftp.gnu.org/non-gnu/example/source/feature/1.2.3/example-1.2.3.tar.gz
https://savannah.nongnu.org/download/example/example-1.2.3.tar.gz
https://download.savannah.gnu.org/releases/example/example-1.2.3.tar.gz
https://download.savannah.nongnu.org/releases/example/example-1.2.3.tar.gz
The default regex identifies versions in archive files found in href
attributes.
Constant Summary collapse
- NICE_NAME =
"GNU"
- URL_MATCH_REGEX =
The
Regexp
used to determine if the strategy applies to the URL. %r{ ^https?:// (?:(?:[^/]+?\.)*gnu\.org/(?:gnu|software)/(?<project_name>[^/]+)/ |(?<project_name>[^/]+)\.gnu\.org/?$) }ix.freeze
Class Method Summary collapse
-
.find_versions(url:, regex: nil, **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.
-
.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.
-
.match?(url) ⇒ Boolean
Whether the strategy can be applied to the provided URL.
Class Method Details
.find_versions(url:, regex: nil, **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.
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# File 'livecheck/strategy/gnu.rb', line 96 def self.find_versions(url:, regex: nil, **unused, &block) generated = generate_input_values(url) PageMatch.find_versions(url: generated[:url], regex: regex || generated[: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.
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# File 'livecheck/strategy/gnu.rb', line 58 def self.generate_input_values(url) values = {} match = url.match(URL_MATCH_REGEX) return values if match.blank? # The directory listing page for the project's files values[:url] = "https://ftp.gnu.org/gnu/#{match[:project_name]}/" regex_name = Regexp.escape(T.must(match[:project_name])).gsub("\\-", "-") # The default regex consists of the following parts: # * `href=.*?`: restricts matching to URLs in `href` attributes # * The project name # * `[._-]`: the generic delimiter between project name and version # * `v?(\d+(?:\.\d+)*)`: the numeric version # * `(?:\.[a-z]+|/)`: the file extension (a trailing delimiter) # # Example regex: `%r{href=.*?example[._-]v?(\d+(?:\.\d+)*)(?:\.[a-z]+|/)}i` values[:regex] = %r{href=.*?#{regex_name}[._-]v?(\d+(?:\.\d+)*)(?:\.[a-z]+|/)}i values end |
.match?(url) ⇒ Boolean
Whether the strategy can be applied to the provided URL.
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# File 'livecheck/strategy/gnu.rb', line 46 def self.match?(url) URL_MATCH_REGEX.match?(url) && url.exclude?("savannah.") end |