Module: Cask::Utils Private

Defined in:
cask/utils.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.

Helper functions for various cask operations.

Class Method Summary collapse

Class Method Details

.error_message_with_suggestions ⇒ 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.

Returns:



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# File 'cask/utils.rb', line 121

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. 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 'cask/utils.rb', line 63

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",
                  args:         command_args + ["--", "000", path])
      command.run("/bin/chmod",
                  args:         command_args + ["--", "u+rwx", path])
      command.run("/bin/chmod",
                  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_mkpath(path, command: SystemCommand) ⇒ 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 'cask/utils.rb', line 14

def self.gain_permissions_mkpath(path, command: SystemCommand)
  dir = path.ascend.find(&:directory?)
  return if path == dir

  if dir.writable?
    path.mkpath
  else
    command.run!("/bin/mkdir", args: ["-p", "--", path], sudo: true, print_stderr: false)
  end
end

.gain_permissions_remove(path, command: SystemCommand) ⇒ 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 'cask/utils.rb', line 35

def self.gain_permissions_remove(path, command: SystemCommand)
  directory = false
  permission_flags = if path.symlink?
    ["-h"]
  elsif path.directory?
    directory = true
    ["-R"]
  elsif path.exist?
    []
  else
    # Nothing to remove.
    return
  end

  gain_permissions(path, permission_flags, command) do |p|
    if p.parent.writable?
      if directory
        p.rmtree
      else
        FileUtils.rm_f p
      end
    else
      recursive_flag = directory ? ["-R"] : []
      command.run!("/bin/rm", args: recursive_flag + ["-f", "--", p], sudo: true, print_stderr: false)
    end
  end
end

.gain_permissions_rmdir(path, command: SystemCommand) ⇒ 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 'cask/utils.rb', line 25

def self.gain_permissions_rmdir(path, command: SystemCommand)
  gain_permissions(path, [], command) do |p|
    if p.parent.writable?
      FileUtils.rmdir p
    else
      command.run!("/bin/rmdir", args: ["--", p], sudo: true, print_stderr: false)
    end
  end
end

.method_missing_message(method, token, section = 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 'cask/utils.rb', line 128

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

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

.path_occupied?(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.

Parameters:

Returns:

  • (Boolean) 


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# File 'cask/utils.rb', line 104

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

.token_from(name) ⇒ 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 'cask/utils.rb', line 109

def self.token_from(name)
  name.downcase
      .gsub("+", "-plus-")
      .gsub("@", "-at-")
      .gsub(/[ _·•]/, "-")
      .gsub(/[^\w-]/, "")
      .gsub(/--+/, "-")
      .delete_prefix("-")
      .delete_suffix("-")
end