68 lines
2.6 KiB
Ruby

# typed: false
# frozen_string_literal: true
module Homebrew
module Livecheck
module Strategy
# The {Apache} strategy identifies versions of software at apache.org
# by checking directory listing pages.
#
# Apache URLs start with `https://www.apache.org/dyn/closer.lua?path=`.
# The `path` parameter takes one of the following formats:
#
# * `example/1.2.3/example-1.2.3.tar.gz`
# * `example/example-1.2.3/example-1.2.3.tar.gz`
# * `example/example-1.2.3-bin.tar.gz`
#
# When the `path` contains a version directory (e.g. `/1.2.3/`,
# `/example-1.2.3/`, etc.), the default regex matches numeric versions
# in directory names. Otherwise, the default regex matches numeric
# versions in filenames.
#
# @api public
class Apache
# The `Regexp` used to determine if the strategy applies to the URL.
URL_MATCH_REGEX = %r{www\.apache\.org/dyn/.+path=.+}i.freeze
# Whether the strategy can be applied to the provided URL.
#
# @param url [String] the URL to match against
# @return [Boolean]
def self.match?(url)
URL_MATCH_REGEX.match?(url)
end
# Generates a URL and regex (if one isn't provided) and passes them
# to {PageMatch.find_versions} to identify versions in the content.
#
# @param url [String] the URL of the content to check
# @param regex [Regexp] a regex used for matching versions in content
# @return [Hash]
def self.find_versions(url, regex = nil)
%r{
path=
(?<path>.+?)/ # Path to directory of files or version directories
(?<prefix>[^/]*?) # Any text in filename or directory before version
v?\d+(?:\.\d+)+ # The numeric version
(?<suffix>/|[^/]*) # Any text in filename or directory after version
}ix =~ url
# Use `\.t` instead of specific tarball extensions (e.g. .tar.gz)
suffix.sub!(/\.t(?:ar\..+|[a-z0-9]+)$/i, "\.t")
# Example URL: `https://archive.apache.org/dist/example/`
page_url = "https://archive.apache.org/dist/#{path}/"
# Example directory regex: `%r{href=["']?v?(\d+(?:\.\d+)+)/}i`
# Example file regexes:
# * `/href=["']?example-v?(\d+(?:\.\d+)+)\.t/i`
# * `/href=["']?example-v?(\d+(?:\.\d+)+)-bin\.zip/i`
regex ||= /href=["']?#{Regexp.escape(prefix)}v?(\d+(?:\.\d+)+)#{Regexp.escape(suffix)}/i
Homebrew::Livecheck::Strategy::PageMatch.find_versions(page_url, regex)
end
end
end
end
end