Module: Utils Private

Defined in:
extend/os/mac/utils/bottles.rb,
utils.rb,
utils/ast.rb,
utils/git.rb,
utils/svn.rb,
utils/tar.rb,
utils/curl.rb,
utils/fork.rb,
utils/gzip.rb,
utils/link.rb,
utils/path.rb,
utils/popen.rb,
utils/shell.rb,
utils/timer.rb,
utils/bottles.rb,
utils/service.rb,
utils/shebang.rb,
utils/analytics.rb,
utils/backtrace.rb,
utils/inreplace.rb,
utils/autoremove.rb,
utils/git_repository.rb,
utils/topological_hash.rb,
utils/ast.rbi,
utils/shell.rbi,
utils/service.rbi,
utils/shebang.rbi,
sorbet/rbi/parlour.rbi

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

Defined Under Namespace

Modules: AST, Analytics, Backtrace, Bottles, Curl, Git, Gzip, Inreplace, Link, Path, Service, Shebang, Shell, Svn, Tar, Timer Classes: TopologicalHash

Class Method Summary collapse

Class Method Details

.deconstantize(path) ⇒ String

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.

Removes the rightmost segment from the constant expression in the string.

deconstantize(‘Net::HTTP’) # => “Net” deconstantize(‘::Net::HTTP’) # => “::Net” deconstantize(‘String’) # => “” deconstantize(‘::String’) # => “” deconstantize(‘’) # => “”

See also #demodulize.

Parameters:

Returns:

See Also:



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# File 'utils.rb', line 103

def self.deconstantize(path)
  T.must(path[0, path.rindex("::") || 0]) # implementation based on the one in facets' Module#spacename
end

.demodulize(path) ⇒ String

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.

Removes the module part from the expression in the string.

demodulize(‘ActiveSupport::Inflector::Inflections’) # => “Inflections” demodulize(‘Inflections’) # => “Inflections” demodulize(‘::Inflections’) # => “Inflections” demodulize(‘’) # => “”

See also #deconstantize.

Parameters:

Returns:

See Also:



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# File 'utils.rb', line 118

def self.demodulize(path)
  if (i = path.rindex("::"))
    T.must(path[(i + 2)..])
  else
    path
  end
end

.git_branch(repo = Pathname.pwd, safe: true) ⇒ String?

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.

Gets the name of the currently checked-out branch, or HEAD if the repository is in a detached HEAD state.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • safe (Boolean) (defaults to: true)

Returns:



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# File 'utils/git_repository.rb', line 38

def self.git_branch(repo = Pathname.pwd, safe: true)
  GitRepository.new(Pathname(repo)).branch_name(safe:)
end

.git_commit_message(repo = Pathname.pwd, commit: "HEAD", safe: true) ⇒ String?

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.

Gets the full commit message of the specified commit, or of the HEAD commit if unspecified.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • commit (String) (defaults to: "HEAD")
  • safe (Boolean) (defaults to: true)

Returns:



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# File 'utils/git_repository.rb', line 50

def self.git_commit_message(repo = Pathname.pwd, commit: "HEAD", safe: true)
  GitRepository.new(Pathname(repo)).commit_message(commit, safe:)
end

.git_head(repo = Pathname.pwd, length: nil, safe: true) ⇒ String?

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.

Gets the full commit hash of the HEAD commit.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • length (Integer, nil) (defaults to: nil)
  • safe (Boolean) (defaults to: true)

Returns:



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# File 'utils/git_repository.rb', line 13

def self.git_head(repo = Pathname.pwd, length: nil, safe: true)
  return git_short_head(repo, length:) if length

  GitRepository.new(Pathname(repo)).head_ref(safe:)
end

.git_short_head(repo = Pathname.pwd, length: nil, safe: true) ⇒ String?

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.

Gets a short commit hash of the HEAD commit.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • length (Integer, nil) (defaults to: nil)
  • safe (Boolean) (defaults to: true)

Returns:



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# File 'utils/git_repository.rb', line 27

def self.git_short_head(repo = Pathname.pwd, length: nil, safe: true)
  GitRepository.new(Pathname(repo)).short_head_ref(length:, safe:)
end

.parse_author!(author) ⇒ Hash

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.

Parameters:

Returns:

Raises:



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# File 'utils.rb', line 139

def self.parse_author!(author)
  match_data = /^(?<name>[^<]+?)[ \t]*<(?<email>[^>]+?)>$/.match(author)
  if match_data
    name = match_data[:name]
    email = match_data[:email]
  end
  raise UsageError, "Unable to parse name and email." if name.blank? && email.blank?

  { name: T.must(name), email: T.must(email) }
end

.pluralize(stem, count, plural: "s", singular: "", include_count: false) ⇒ String

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.

A lightweight alternative to ActiveSupport::Inflector.pluralize: Combines stem with the singular or plural suffix based on count. Adds a prefix of the count value if include_count is set to true.

Parameters:

  • stem (String)
  • count (Integer)
  • plural (String) (defaults to: "s")
  • singular (String) (defaults to: "")
  • include_count (Boolean) (defaults to: false)

Returns:



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# File 'utils.rb', line 132

def self.pluralize(stem, count, plural: "s", singular: "", include_count: false)
  prefix = include_count ? "#{count} " : ""
  suffix = (count == 1) ? singular : plural
  "#{prefix}#{stem}#{suffix}"
end

.popen(args, mode, options = {}) ⇒ Object

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. 



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# File 'utils/popen.rb', line 46

def self.popen(args, mode, options = {})
  IO.popen("-", mode) do |pipe|
    if pipe
      return pipe.read unless block_given?

      yield pipe
    else
      options[:err] ||= "/dev/null" unless ENV["HOMEBREW_STDERR"]
      begin
        exec(*args, options)
      rescue Errno::ENOENT
        $stderr.puts "brew: command not found: #{args[0]}" if options[:err] != :close
        exit! 127
      rescue SystemCallError
        $stderr.puts "brew: exec failed: #{args[0]}" if options[:err] != :close
        exit! 1
      end
    end
  end
end

.popen_read(*args, safe: false, **options, &block) ⇒ Object

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.

Raises:



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# File 'utils/popen.rb', line 8

def self.popen_read(*args, safe: false, **options, &block)
  output = popen(args, "rb", options, &block)
  return output if !safe || $CHILD_STATUS.success?

  raise ErrorDuringExecution.new(args, status: $CHILD_STATUS, output: [[:stdout, output]])
end

.popen_write(*args, safe: false, **options) ⇒ Object

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.

Raises:



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# File 'utils/popen.rb', line 19

def self.popen_write(*args, safe: false, **options)
  output = ""
  popen(args, "w+b", options) do |pipe|
    # Before we yield to the block, capture as much output as we can
    loop do
      output += pipe.read_nonblock(IO_DEFAULT_BUFFER_SIZE)
    rescue IO::WaitReadable, EOFError
      break
    end

    yield pipe
    pipe.close_write
    pipe.wait_readable

    # Capture the rest of the output
    output += pipe.read
    output.freeze
  end
  return output if !safe || $CHILD_STATUS.success?

  raise ErrorDuringExecution.new(args, status: $CHILD_STATUS, output: [[:stdout, output]])
end

.rewrite_child_error(child_error) ⇒ Object

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. 



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# File 'utils/fork.rb', line 8

def self.rewrite_child_error(child_error)
  error = if child_error.inner["cmd"] &&
             child_error.inner_class == ErrorDuringExecution
    ErrorDuringExecution.new(child_error.inner["cmd"],
                             status: child_error.inner["status"],
                             output: child_error.inner["output"])
  elsif child_error.inner["cmd"] &&
        child_error.inner_class == BuildError
    # We fill `BuildError#formula` and `BuildError#options` in later,
    # when we rescue this in `FormulaInstaller#build`.
    BuildError.new(nil, child_error.inner["cmd"],
                   child_error.inner["args"], child_error.inner["env"])
  elsif child_error.inner_class == Interrupt
    Interrupt.new
  else
    # Everything other error in the child just becomes a RuntimeError.
    RuntimeError.new(child_error.message)
  end

  error.set_backtrace child_error.backtrace

  error
end

.safe_filename(basename) ⇒ String

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.

Parameters:

Returns:



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# File 'utils.rb', line 181

def self.safe_filename(basename)
  basename.gsub(SAFE_FILENAME_REGEX, "")
end

.safe_filename?(basename) ⇒ 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.

Parameters:

Returns:

  • (Boolean) 


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# File 'utils.rb', line 176

def self.safe_filename?(basename)
  !SAFE_FILENAME_REGEX.match?(basename)
end

.safe_fork ⇒ Object

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. 



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# File 'utils/fork.rb', line 32

def self.safe_fork
  Dir.mktmpdir("homebrew", HOMEBREW_TEMP) do |tmpdir|
    UNIXServer.open("#{tmpdir}/socket") do |server|
      read, write = IO.pipe

      pid = fork do
        # bootsnap doesn't like these forked processes
        ENV["HOMEBREW_NO_BOOTSNAP"] = "1"
        error_pipe = server.path
        ENV["HOMEBREW_ERROR_PIPE"] = error_pipe
        server.close
        read.close
        write.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)

        Process::UID.change_privilege(Process.euid) if Process.euid != Process.uid

        yield(error_pipe)
      rescue Exception => e # rubocop:disable Lint/RescueException
        error_hash = JSON.parse e.to_json

        # Special case: We need to recreate ErrorDuringExecutions
        # for proper error messages and because other code expects
        # to rescue them further down.
        if e.is_a?(ErrorDuringExecution)
          error_hash["cmd"] = e.cmd
          error_hash["status"] = if e.status.is_a?(Process::Status)
            {
              exitstatus: e.status.exitstatus,
              termsig:    e.status.termsig,
            }
          else
            e.status
          end
          error_hash["output"] = e.output
        end

        write.puts error_hash.to_json
        write.close

        exit!
      else
        exit!(true)
      end

      ignore_interrupts(:quietly) do # the child will receive the interrupt and marshal it back
        begin
          socket = server.accept_nonblock
        rescue Errno::EAGAIN, Errno::EWOULDBLOCK, Errno::ECONNABORTED, Errno::EPROTO, Errno::EINTR
          retry unless Process.waitpid(T.must(pid), Process::WNOHANG)
        else
          socket.send_io(write)
          socket.close
        end
        write.close
        data = read.read
        read.close
        Process.wait(T.must(pid)) unless socket.nil?

        # 130 is the exit status for a process interrupted via Ctrl-C.
        # We handle it here because of the possibility of an interrupted process terminating
        # without writing its Interrupt exception to the error pipe.
        raise Interrupt if $CHILD_STATUS.exitstatus == 130

        if data.present?
          error_hash = JSON.parse(T.must(data.lines.first))

          e = ChildProcessError.new(error_hash)

          raise rewrite_child_error(e)
        end

        raise "Forked child process failed: #{$CHILD_STATUS}" unless $CHILD_STATUS.success?
      end
    end
  end
end

.safe_popen_read(*args, **options, &block) ⇒ Object

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. 



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# File 'utils/popen.rb', line 15

def self.safe_popen_read(*args, **options, &block)
  popen_read(*args, safe: true, **options, &block)
end

.safe_popen_write(*args, **options, &block) ⇒ Object

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. 



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# File 'utils/popen.rb', line 42

def self.safe_popen_write(*args, **options, &block)
  popen_write(*args, safe: true, **options, &block)
end

.underscore(camel_cased_word) ⇒ String

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.

Makes an underscored, lowercase form from the expression in the string.

Changes ‘::’ to ‘/’ to convert namespaces to paths.

underscore(‘ActiveModel’) # => “active_model” underscore(‘ActiveModel::Errors’) # => “active_model/errors”

Parameters:

Returns:

See Also:



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# File 'utils.rb', line 160

def self.underscore(camel_cased_word)
  return camel_cased_word.to_s unless /[A-Z-]|::/.match?(camel_cased_word)

  word = camel_cased_word.to_s.gsub("::", "/")
  word.gsub!(/([A-Z])(?=[A-Z][a-z])|([a-z\d])(?=[A-Z])/) do
    T.must(::Regexp.last_match(1) || ::Regexp.last_match(2)) << "_"
  end
  word.tr!("-", "_")
  word.downcase!
  word
end