Module: Kernel Private

Included in:
Cask::DSL::DependsOn, Cask::URL, Dependencies, Formulary, Ignorable, Requirements, Utils::AST
Defined in:
extend/kernel.rb,
extend/ENV.rb

Overview

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.

TODO:

move these out of Kernel.

Contains shorthand Homebrew utility methods like ohai, opoo, odisabled.

Constant Summary collapse

IGNORE_INTERRUPTS_MUTEX =

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. 

Thread::Mutex.new.freeze

Instance Method Summary collapse

Instance Method Details

#disk_usage_readable(size_in_bytes) ⇒ 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 'extend/kernel.rb', line 453

def disk_usage_readable(size_in_bytes)
  if size_in_bytes >= 1_073_741_824
    size = size_in_bytes.to_f / 1_073_741_824
    unit = "GB"
  elsif size_in_bytes >= 1_048_576
    size = size_in_bytes.to_f / 1_048_576
    unit = "MB"
  elsif size_in_bytes >= 1_024
    size = size_in_bytes.to_f / 1_024
    unit = "KB"
  else
    size = size_in_bytes
    unit = "B"
  end

  # avoid trailing zero after decimal point
  if ((size * 10).to_i % 10).zero?
    "#{size.to_i}#{unit}"
  else
    "#{format("%<size>.1f", size:)}#{unit}"
  end
end

#ensure_executable!(name, formula_name = nil, reason: "", latest: false) ⇒ 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.

Ensure the given executable is exist otherwise install the brewed version



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# File 'extend/kernel.rb', line 433

def ensure_executable!(name, formula_name = nil, reason: "", latest: false)
  formula_name ||= name

  executable = [
    which(name),
    which(name, ORIGINAL_PATHS),
    # We prefer the opt_bin path to a formula's executable over the prefix
    # path where available, since the former is stable during upgrades.
    HOMEBREW_PREFIX/"opt/#{formula_name}/bin/#{name}",
    HOMEBREW_PREFIX/"bin/#{name}",
  ].compact.first
  return executable if executable.exist?

  ensure_formula_installed!(formula_name, reason:, latest:).opt_bin/name
end

#ensure_formula_installed!(formula_or_name, reason: "", latest: false, output_to_stderr: true, quiet: false) ⇒ 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.

Ensure the given formula is installed This is useful for installing a utility formula (e.g. shellcheck for brew style)



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# File 'extend/kernel.rb', line 394

def ensure_formula_installed!(formula_or_name, reason: "", latest: false,
                              output_to_stderr: true, quiet: false)
  if output_to_stderr || quiet
    file = if quiet
      File::NULL
    else
      $stderr
    end
    # Call this method itself with redirected stdout
    redirect_stdout(file) do
      return ensure_formula_installed!(formula_or_name, latest:,
                                       reason:, output_to_stderr: false)
    end
  end

  require "formula"

  formula = if formula_or_name.is_a?(Formula)
    formula_or_name
  else
    Formula[formula_or_name]
  end

  reason = " for #{reason}" if reason.present?

  unless formula.any_version_installed?
    ohai "Installing `#{formula.name}`#{reason}..."
    safe_system HOMEBREW_BREW_FILE, "install", "--formula", formula.full_name
  end

  if latest && !formula.latest_version_installed?
    ohai "Upgrading `#{formula.name}`#{reason}..."
    safe_system HOMEBREW_BREW_FILE, "upgrade", "--formula", formula.full_name
  end

  formula
end

#exec_browser(*args) ⇒ 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 'extend/kernel.rb', line 349

def exec_browser(*args)
  browser = Homebrew::EnvConfig.browser
  browser ||= OS::PATH_OPEN if defined?(OS::PATH_OPEN)
  return unless browser

  ENV["DISPLAY"] = Homebrew::EnvConfig.display

  with_env(DBUS_SESSION_BUS_ADDRESS: ENV.fetch("HOMEBREW_DBUS_SESSION_BUS_ADDRESS", nil)) do
    safe_system(browser, *args)
  end
end

#exec_editor(*args) ⇒ 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 'extend/kernel.rb', line 344

def exec_editor(*args)
  puts "Editing #{args.join "\n"}"
  with_homebrew_path { safe_system(*which_editor.shellsplit, *args) }
end

#ignore_interrupts ⇒ 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 'extend/kernel.rb', line 363

def ignore_interrupts
  IGNORE_INTERRUPTS_MUTEX.synchronize do
    interrupted = T.let(false, T::Boolean)
    old_sigint_handler = trap(:INT) do
      interrupted = true

      $stderr.print "\n"
      $stderr.puts "One sec, cleaning up..."
    end

    begin
      yield
    ensure
      trap(:INT, old_sigint_handler)

      raise Interrupt if interrupted
    end
  end
end

#interactive_shell(formula = nil) ⇒ 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 'extend/kernel.rb', line 243

def interactive_shell(formula = nil)
  unless formula.nil?
    ENV["HOMEBREW_DEBUG_PREFIX"] = formula.prefix
    ENV["HOMEBREW_DEBUG_INSTALL"] = formula.full_name
  end

  if Utils::Shell.preferred == :zsh && (home = Dir.home).start_with?(HOMEBREW_TEMP.resolved_path.to_s)
    FileUtils.mkdir_p home
    FileUtils.touch "#{home}/.zshrc"
  end

  Process.wait fork { exec Utils::Shell.preferred_path(default: "/bin/bash") }

  return if $CHILD_STATUS.success?
  raise "Aborted due to non-zero exit status (#{$CHILD_STATUS.exitstatus})" if $CHILD_STATUS.exited?

  raise $CHILD_STATUS.inspect
end

#number_readable(number) ⇒ 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 'extend/kernel.rb', line 476

def number_readable(number)
  numstr = number.to_i.to_s
  (numstr.size - 3).step(1, -3) { |i| numstr.insert(i, ",") }
  numstr
end

#odebug(title, *sput, always_display: false) ⇒ 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 'extend/kernel.rb', line 34

def odebug(title, *sput, always_display: false)
  debug = if respond_to?(:debug)
    T.unsafe(self).debug?
  else
    Context.current.debug?
  end

  return if !debug && !always_display

  $stderr.puts Formatter.headline(title, color: :magenta)
  $stderr.puts sput unless sput.empty?
end

#odeprecated(method, replacement = nil, disable: false, disable_on: nil, disable_for_developers: true, caller: send(:caller)) ⇒ 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.

Output a deprecation warning/error message.



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# File 'extend/kernel.rb', line 111

def odeprecated(method, replacement = nil,
                disable:                false,
                disable_on:             nil,
                disable_for_developers: true,
                caller:                 send(:caller))
  replacement_message = if replacement
    "Use #{replacement} instead."
  else
    "There is no replacement."
  end

  unless disable_on.nil?
    if disable_on > Time.now
      will_be_disabled_message = " and will be disabled on #{disable_on.strftime("%Y-%m-%d")}"
    else
      disable = true
    end
  end

  verb = if disable
    "disabled"
  else
    "deprecated#{will_be_disabled_message}"
  end

  # Try to show the most relevant location in message, i.e. (if applicable):
  # - Location in a formula.
  # - Location of caller of deprecated method (if all else fails).
  backtrace = caller

  # Don't throw deprecations at all for cached, .brew or .metadata files.
  return if backtrace.any? do |line|
    next true if line.include?(HOMEBREW_CACHE.to_s)
    next true if line.include?("/.brew/")
    next true if line.include?("/.metadata/")

    next false unless line.match?(HOMEBREW_TAP_PATH_REGEX)

    path = Pathname(line.split(":", 2).first)
    next false unless path.file?
    next false unless path.readable?

    formula_contents = path.read
    formula_contents.include?(" deprecate! ") || formula_contents.include?(" disable! ")
  end

  tap_message = T.let(nil, T.nilable(String))

  backtrace.each do |line|
    next unless (match = line.match(HOMEBREW_TAP_PATH_REGEX))

    require "tap"

    tap = Tap.fetch(match[:user], match[:repository])
    tap_message = "\nPlease report this issue to the #{tap.full_name} tap"
    tap_message += " (not Homebrew/brew or Homebrew/homebrew-core)" unless tap.official?
    tap_message += ", or even better, submit a PR to fix it" if replacement
    tap_message << ":\n  #{line.sub(/^(.*:\d+):.*$/, '\1')}\n\n"
    break
  end
  file, line, = backtrace.first.split(":")
  line = line.to_i if line.present?

  message = "Calling #{method} is #{verb}! #{replacement_message}"
  message << tap_message if tap_message
  message.freeze

  disable = true if disable_for_developers && Homebrew::EnvConfig.developer?
  if disable || Homebrew.raise_deprecation_exceptions?
    require "utils/github/actions"
    GitHub::Actions.puts_annotation_if_env_set(:error, message, file:, line:)
    exception = MethodDeprecatedError.new(message)
    exception.set_backtrace(backtrace)
    raise exception
  elsif !Homebrew.auditing?
    opoo message
  end
end

#odie(error) ⇒ T.noreturn

Print an error message and fail immediately.

Parameters:

Returns:

  • (T.noreturn) 


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# File 'extend/kernel.rb', line 105

def odie(error)
  onoe error
  exit 1
end

#odisabled(method, replacement = nil, **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 'extend/kernel.rb', line 190

def odisabled(method, replacement = nil, **options)
  options = { disable: true, caller: }.merge(options)
  # This odeprecated should stick around indefinitely.
  odeprecated(method, replacement, **options)
end

#ofail(error) ⇒ void

This method returns an undefined value.

Print an error message and fail at the end of the program.

Parameters:



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# File 'extend/kernel.rb', line 96

def ofail(error)
  onoe error
  Homebrew.failed = true
end

#oh1(title, truncate: :auto) ⇒ 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 'extend/kernel.rb', line 58

def oh1(title, truncate: :auto)
  puts oh1_title(title, truncate:)
end

#oh1_title(title, truncate: :auto) ⇒ 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 'extend/kernel.rb', line 47

def oh1_title(title, truncate: :auto)
  verbose = if respond_to?(:verbose?)
    T.unsafe(self).verbose?
  else
    Context.current.verbose?
  end

  title = Tty.truncate(title.to_s) if $stdout.tty? && !verbose && truncate == :auto
  Formatter.headline(title, color: :green)
end

#ohai(title, *sput) ⇒ 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 'extend/kernel.rb', line 29

def ohai(title, *sput)
  puts ohai_title(title)
  puts sput
end

#ohai_title(title) ⇒ 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 'extend/kernel.rb', line 18

def ohai_title(title)
  verbose = if respond_to?(:verbose?)
    T.unsafe(self).verbose?
  else
    Context.current.verbose?
  end

  title = Tty.truncate(title.to_s) if $stdout.tty? && !verbose
  Formatter.headline(title, color: :blue)
end

#onoe(message) ⇒ void

This method returns an undefined value.

Print an error message.

Parameters:



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# File 'extend/kernel.rb', line 81

def onoe(message)
  require "utils/github/actions"
  return if GitHub::Actions.puts_annotation_if_env_set(:error, message.to_s)

  require "utils/formatter"

  Tty.with($stderr) do |stderr|
    stderr.puts Formatter.error(message, label: "Error")
  end
end

#opoo(message) ⇒ void

This method returns an undefined value.

Print a warning message.

Parameters:



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# File 'extend/kernel.rb', line 66

def opoo(message)
  require "utils/github/actions"
  return if GitHub::Actions.puts_annotation_if_env_set(:warning, message.to_s)

  require "utils/formatter"

  Tty.with($stderr) do |stderr|
    stderr.puts Formatter.warning(message, label: "Warning")
  end
end

#paths ⇒ 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 'extend/kernel.rb', line 449

def paths
  @paths ||= ORIGINAL_PATHS.uniq.map(&:to_s)
end

#pretty_duration(seconds) ⇒ 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 'extend/kernel.rb', line 226

def pretty_duration(seconds)
  seconds = seconds.to_i
  res = +""

  if seconds > 59
    minutes = seconds / 60
    seconds %= 60
    res = +Utils.pluralize("minute", minutes, include_count: true)
    return res.freeze if seconds.zero?

    res << " "
  end

  res << Utils.pluralize("second", seconds, include_count: true)
  res.freeze
end

#pretty_installed(formula) ⇒ 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 'extend/kernel.rb', line 196

def pretty_installed(formula)
  if !$stdout.tty?
    formula.to_s
  elsif Homebrew::EnvConfig.no_emoji?
    Formatter.success("#{Tty.bold}#{formula} (installed)#{Tty.reset}")
  else
    "#{Tty.bold}#{formula} #{Formatter.success("✔")}#{Tty.reset}"
  end
end

#pretty_outdated(formula) ⇒ 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 'extend/kernel.rb', line 206

def pretty_outdated(formula)
  if !$stdout.tty?
    formula.to_s
  elsif Homebrew::EnvConfig.no_emoji?
    Formatter.error("#{Tty.bold}#{formula} (outdated)#{Tty.reset}")
  else
    "#{Tty.bold}#{formula} #{Formatter.warning("⚠")}#{Tty.reset}"
  end
end

#pretty_uninstalled(formula) ⇒ 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 'extend/kernel.rb', line 216

def pretty_uninstalled(formula)
  if !$stdout.tty?
    formula.to_s
  elsif Homebrew::EnvConfig.no_emoji?
    Formatter.error("#{Tty.bold}#{formula} (uninstalled)#{Tty.reset}")
  else
    "#{Tty.bold}#{formula} #{Formatter.error("✘")}#{Tty.reset}"
  end
end

#quiet_system(cmd, *args) ⇒ Object

This method is part of an internal API. This method may only be used internally in repositories owned by Homebrew, except in casks or formulae. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Run a system command without any output.



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# File 'extend/kernel.rb', line 282

def quiet_system(cmd, *args)
  require "utils"

  Homebrew._system(cmd, *args) do
    # Redirect output streams to `/dev/null` instead of closing as some programs
    # will fail to execute if they can't write to an open stream.
    $stdout.reopen(File::NULL)
    $stderr.reopen(File::NULL)
  end
end

#redact_secrets(input, secrets) ⇒ 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 'extend/kernel.rb', line 557

def redact_secrets(input, secrets)
  secrets.compact
         .reduce(input) { |str, secret| str.gsub secret, "******" }
         .freeze
end

#redirect_stdout(file) ⇒ 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 'extend/kernel.rb', line 383

def redirect_stdout(file)
  out = $stdout.dup
  $stdout.reopen(file)
  yield
ensure
  $stdout.reopen(out)
  out.close
end

#require?(path) ⇒ 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.

Returns:

  • (Boolean) 


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# File 'extend/kernel.rb', line 8

def require?(path)
  return false if path.nil?

  require path
  true
rescue LoadError => e
  # we should raise on syntax errors but not if the file doesn't exist.
  raise unless e.message.include?(path)
end

#safe_system(cmd, *args, **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.

Kernel.system but with exceptions.

Raises:



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# File 'extend/kernel.rb', line 271

def safe_system(cmd, *args, **options)
  require "utils"

  return if Homebrew.system(cmd, *args, **options)

  raise ErrorDuringExecution.new([cmd, *args], status: $CHILD_STATUS)
end

#tap_and_name_comparison ⇒ 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 'extend/kernel.rb', line 545

def tap_and_name_comparison
  proc do |a, b|
    if a.include?("/") && b.exclude?("/")
      1
    elsif a.exclude?("/") && b.include?("/")
      -1
    else
      a <=> b
    end
  end
end

#truncate_text_to_approximate_size(str, max_bytes, 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.

Truncates a text string to fit within a byte size constraint, preserving character encoding validity. The returned string will be not much longer than the specified max_bytes, though the exact shortfall or overrun may vary.



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# File 'extend/kernel.rb', line 486

def truncate_text_to_approximate_size(str, max_bytes, options = {})
  front_weight = options.fetch(:front_weight, 0.5)
  raise "opts[:front_weight] must be between 0.0 and 1.0" if front_weight < 0.0 || front_weight > 1.0
  return str if str.bytesize <= max_bytes

  glue = "\n[...snip...]\n"
  max_bytes_in = [max_bytes - glue.bytesize, 1].max
  bytes = str.dup.force_encoding("BINARY")
  glue_bytes = glue.encode("BINARY")
  n_front_bytes = (max_bytes_in * front_weight).floor
  n_back_bytes = max_bytes_in - n_front_bytes
  if n_front_bytes.zero?
    front = bytes[1..0]
    back = bytes[-max_bytes_in..]
  elsif n_back_bytes.zero?
    front = bytes[0..(max_bytes_in - 1)]
    back = bytes[1..0]
  else
    front = bytes[0..(n_front_bytes - 1)]
    back = bytes[-n_back_bytes..]
  end
  out = front + glue_bytes + back
  out.force_encoding("UTF-8")
  out.encode!("UTF-16", invalid: :replace)
  out.encode!("UTF-8")
  out
end

#which(cmd, path = ENV.fetch("PATH")) ⇒ Object

Find a command.



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# File 'extend/kernel.rb', line 296

def which(cmd, path = ENV.fetch("PATH"))
  PATH.new(path).each do |p|
    begin
      pcmd = File.expand_path(cmd, p)
    rescue ArgumentError
      # File.expand_path will raise an ArgumentError if the path is malformed.
      # See https://github.com/Homebrew/legacy-homebrew/issues/32789
      next
    end
    return Pathname.new(pcmd) if File.file?(pcmd) && File.executable?(pcmd)
  end
  nil
end

#which_all(cmd, path = ENV.fetch("PATH")) ⇒ 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 'extend/kernel.rb', line 310

def which_all(cmd, path = ENV.fetch("PATH"))
  PATH.new(path).filter_map do |p|
    begin
      pcmd = File.expand_path(cmd, p)
    rescue ArgumentError
      # File.expand_path will raise an ArgumentError if the path is malformed.
      # See https://github.com/Homebrew/legacy-homebrew/issues/32789
      next
    end
    Pathname.new(pcmd) if File.file?(pcmd) && File.executable?(pcmd)
  end.uniq
end

#which_editor(silent: false) ⇒ 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 'extend/kernel.rb', line 323

def which_editor(silent: false)
  editor = Homebrew::EnvConfig.editor
  return editor if editor

  # Find VS Code, Sublime Text, Textmate, BBEdit, or vim
  editor = %w[code subl mate bbedit vim].find do |candidate|
    candidate if which(candidate, ORIGINAL_PATHS)
  end
  editor ||= "vim"

  unless silent
    opoo <<~EOS
      Using #{editor} because no editor was set in the environment.
      This may change in the future, so we recommend setting EDITOR
      or HOMEBREW_EDITOR to your preferred text editor.
    EOS
  end

  editor
end

#with_custom_locale(locale, &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 'extend/kernel.rb', line 266

def with_custom_locale(locale, &block)
  with_env(LC_ALL: locale, &block)
end

#with_env(hash) ⇒ Object

Note:

This method is not thread-safe – other threads which happen to be scheduled during the block will also see these environment variables.

Calls the given block with the passed environment variables added to ENV, then restores ENV afterwards.

Example

with_env(PATH: "/bin") do
  system "echo $PATH"
end



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# File 'extend/kernel.rb', line 530

def with_env(hash)
  old_values = {}
  begin
    hash.each do |key, value|
      key = key.to_s
      old_values[key] = ENV.delete(key)
      ENV[key] = value
    end

    yield if block_given?
  ensure
    ENV.update(old_values)
  end
end

#with_homebrew_path(&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 'extend/kernel.rb', line 262

def with_homebrew_path(&block)
  with_env(PATH: PATH.new(ORIGINAL_PATHS), &block)
end