Class: Homebrew::Livecheck::Strategy::HeaderMatch Private

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

Overview

This class is part of a private API. This class may only be used in the Homebrew/brew repository. Third parties should avoid using this class if possible, as it may be removed or changed without warning.

The HeaderMatch strategy follows all URL redirections and scans the resulting headers for matching text using the provided regex.

Constant Summary collapse

NICE_NAME =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning.

"Header match"
PRIORITY =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning.

A priority of zero causes livecheck to skip the strategy. We only apply Homebrew::Livecheck::Strategy::HeaderMatch using strategy :header_match in a livecheck block, as we can’t automatically determine when this can be successfully applied to a URL.

0
URL_MATCH_REGEX =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning.

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

%r{^https?://}i.freeze

Class Method Summary collapse

Class Method Details

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

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Checks the final URL for new versions after following all redirections, using the provided regex for matching.

Parameters:

Returns:



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# File 'livecheck/strategy/header_match.rb', line 47

def self.find_versions(url, regex, cask: nil, &block)
  match_data = { matches: {}, regex: regex, url: url }

  headers = Strategy.page_headers(url)

  # Merge the headers from all responses into one hash
  merged_headers = headers.reduce(&:merge)

  if block
    match = yield merged_headers, regex
  else
    match = nil

    if (filename = merged_headers["content-disposition"])
      if regex
        match ||= filename[regex, 1]
      else
        v = Version.parse(filename, detected_from_url: true)
        match ||= v.to_s unless v.null?
      end
    end

    if (location = merged_headers["location"])
      if regex
        match ||= location[regex, 1]
      else
        v = Version.parse(location, detected_from_url: true)
        match ||= v.to_s unless v.null?
      end
    end
  end

  match_data[:matches][match] = Version.new(match) if match

  match_data
end

.match?(url) ⇒ Boolean

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Whether the strategy can be applied to the provided URL. The strategy will technically match any HTTP URL but is only usable with a livecheck block containing a regex or block.

Parameters:

Returns:

  • (Boolean)


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# File 'livecheck/strategy/header_match.rb', line 32

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