Class: Homebrew::DevCmd::Extract Private

Inherits:
AbstractCommand show all
Defined in:
sorbet/rbi/dsl/homebrew/dev_cmd/extract.rbi,
dev-cmd/extract.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.

DO NOT EDIT MANUALLY This is an autogenerated file for dynamic methods in Homebrew::DevCmd::Extract. Please instead update this file by running bin/tapioca dsl Homebrew::DevCmd::Extract.

Defined Under Namespace

Classes: Args

Constant Summary collapse

BOTTLE_BLOCK_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. 

/  bottle (?:do.+?end|:[a-z]+)\n\n/m

Instance Method Summary collapse

Methods inherited from AbstractCommand

command, command_name, dev_cmd?, #initialize, parser

Constructor Details

This class inherits a constructor from Homebrew::AbstractCommand

Instance Method Details

#args ⇒ Homebrew::DevCmd::Extract::Args

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.

Returns:



9
 
# File 'sorbet/rbi/dsl/homebrew/dev_cmd/extract.rbi', line 9

def args; end

#run ⇒ void

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.

This method returns an undefined value.

Raises:



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# File 'dev-cmd/extract.rb', line 34

def run
  if (tap_with_name = args.named.first&.then { Tap.with_formula_name(_1) })
    source_tap, name = tap_with_name
  else
    name = args.named.first.downcase
    source_tap = CoreTap.instance
  end
  raise TapFormulaUnavailableError.new(source_tap, name) unless source_tap.installed?

  destination_tap = Tap.fetch(args.named.second)
  unless Homebrew::EnvConfig.developer?
    odie "Cannot extract formula to homebrew/core!" if destination_tap.core_tap?
    odie "Cannot extract formula to homebrew/cask!" if destination_tap.core_cask_tap?
    odie "Cannot extract formula to the same tap!" if destination_tap == source_tap
  end
  destination_tap.install unless destination_tap.installed?

  repo = source_tap.path
  pattern = if source_tap.core_tap?
    [source_tap.new_formula_path(name), repo/"Formula/#{name}.rb"].uniq
  else
    # A formula can technically live in the root directory of a tap or in any of its subdirectories
    [repo/"#{name}.rb", repo/"**/#{name}.rb"]
  end

  if args.version
    ohai "Searching repository history"
    version = args.version
    version_segments = Gem::Version.new(version).segments if Gem::Version.correct?(version)
    rev = T.let(nil, T.nilable(String))
    test_formula = T.let(nil, T.nilable(Formula))
    result = ""
    loop do
      rev = rev.nil? ? "HEAD" : "#{rev}~1"
      rev, (path,) = Utils::Git.last_revision_commit_of_files(repo, pattern, before_commit: rev)
      if rev.nil? && source_tap.shallow?
        odie <<~EOS
          Could not find #{name} but #{source_tap} is a shallow clone!
          Try again after running:
            git -C "#{source_tap.path}" fetch --unshallow
        EOS
      elsif rev.nil?
        odie "Could not find #{name}! The formula or version may not have existed."
      end

      file = repo/path
      result = Utils::Git.last_revision_of_file(repo, file, before_commit: rev)
      if result.empty?
        odebug "Skipping revision #{rev} - file is empty at this revision"
        next
      end

      test_formula = formula_at_revision(repo, name, file, rev)
      break if test_formula.nil? || test_formula.version == version

      if version_segments && Gem::Version.correct?(test_formula.version)
        test_formula_version_segments = Gem::Version.new(test_formula.version).segments
        if version_segments.length < test_formula_version_segments.length
          odebug "Apply semantic versioning with #{test_formula_version_segments}"
          break if version_segments == test_formula_version_segments.first(version_segments.length)
        end
      end

      odebug "Trying #{test_formula.version} from revision #{rev} against desired #{version}"
    end
    odie "Could not find #{name}! The formula or version may not have existed." if test_formula.nil?
  else
    # Search in the root directory of `repo` as well as recursively in all of its subdirectories.
    files = Dir[repo/"{,**/}"].filter_map do |dir|
      Pathname.glob("#{dir}/#{name}.rb").find(&:file?)
    end

    if files.empty?
      ohai "Searching repository history"
      rev, (path,) = Utils::Git.last_revision_commit_of_files(repo, pattern)
      odie "Could not find #{name}! The formula or version may not have existed." if rev.nil?
      file = repo/path
      version = T.must(formula_at_revision(repo, name, file, rev)).version
      result = Utils::Git.last_revision_of_file(repo, file)
    else
      file = files.fetch(0).realpath
      rev = T.let("HEAD", T.nilable(String))
      version = Formulary.factory(file).version
      result = File.read(file)
    end
  end

  # The class name has to be renamed to match the new filename,
  # e.g. Foo version 1.2.3 becomes FooAT123 and resides in Foo@1.2.3.rb.
  class_name = Formulary.class_s(name)

  # Remove any existing version suffixes, as a new one will be added later
  name.sub!(/\b@(.*)\z\b/i, "")
  versioned_name = Formulary.class_s("#{name}@#{version}")
  result.sub!("class #{class_name} < Formula", "class #{versioned_name} < Formula")

  # Remove bottle blocks, they won't work.
  result.sub!(BOTTLE_BLOCK_REGEX, "")

  path = destination_tap.path/"Formula/#{name}@#{version.to_s.downcase}.rb"
  if path.exist?
    unless args.force?
      odie <<~EOS
        Destination formula already exists: #{path}
        To overwrite it and continue anyways, run:
          brew extract --force --version=#{version} #{name} #{destination_tap.name}
      EOS
    end
    odebug "Overwriting existing formula at #{path}"
    path.delete
  end
  ohai "Writing formula for #{name} from revision #{rev} to:", path
  path.dirname.mkpath
  path.write result
end