Module: Cask::Utils Private

Defined in:
Library/Homebrew/cask/utils.rb

Overview

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Helper functions for various cask operations.

Class Method Summary collapse

Class Method Details

.error_message_with_suggestions ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/cask/utils.rb', line 79

def self.error_message_with_suggestions
  <<~EOS
    Follow the instructions here:
      #{Formatter.url(BUG_REPORTS_URL)}
  EOS
end

.gain_permissions(path, command_args, command) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/cask/utils.rb', line 32

def self.gain_permissions(path, command_args, command)
  tried_permissions = false
  tried_ownership = false
  begin
    yield path
  rescue
    # in case of permissions problems
    unless tried_permissions
      # TODO: Better handling for the case where path is a symlink.
      #       The -h and -R flags cannot be combined, and behavior is
      #       dependent on whether the file argument has a trailing
      #       slash.  This should do the right thing, but is fragile.
      command.run("/usr/bin/chflags",
                  must_succeed: false,
                  args:         command_args + ["--", "000", path])
      command.run("/bin/chmod",
                  must_succeed: false,
                  args:         command_args + ["--", "u+rwx", path])
      command.run("/bin/chmod",
                  must_succeed: false,
                  args:         command_args + ["-N", path])
      tried_permissions = true
      retry # rmtree
    end

    unless tried_ownership
      # in case of ownership problems
      # TODO: Further examine files to see if ownership is the problem
      #       before using sudo+chown
      ohai "Using sudo to gain ownership of path '#{path}'"
      command.run("/usr/sbin/chown",
                  args: command_args + ["--", User.current, path],
                  sudo: true)
      tried_ownership = true
      # retry chflags/chmod after chown
      tried_permissions = false
      retry # rmtree
    end

    raise
  end
end

.gain_permissions_remove(path, command: SystemCommand) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/cask/utils.rb', line 16

def self.gain_permissions_remove(path, command: SystemCommand)
  if path.respond_to?(:rmtree) && path.exist?
    gain_permissions(path, ["-R"], command) do |p|
      if p.parent.writable?
        p.rmtree
      else
        command.run("/bin/rm",
                    args: ["-r", "-f", "--", p],
                    sudo: true)
      end
    end
  elsif File.symlink?(path)
    gain_permissions(path, ["-h"], command, &FileUtils.method(:rm_f))
  end
end

.method_missing_message(method, token, section = nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/cask/utils.rb', line 86

def self.method_missing_message(method, token, section = nil)
  message = +"Unexpected method '#{method}' called "
  message << "during #{section} " if section
  message << "on Cask #{token}."

  opoo "#{message}\n#{error_message_with_suggestions}"
end

.path_occupied?(path) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 

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# File 'Library/Homebrew/cask/utils.rb', line 75

def self.path_occupied?(path)
  File.exist?(path) || File.symlink?(path)
end