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.

Constant Summary collapse

BUG_REPORTS_URL =

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. 

"https://github.com/Homebrew/homebrew-cask#reporting-bugs"

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 122

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 61

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
      print_stderr = Context.current.debug? || Context.current.verbose?
      # 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",
                  print_stderr:,
                  args:         command_args + ["--", "000", path])
      command.run("/bin/chmod",
                  print_stderr:,
                  args:         command_args + ["--", "u+rwx", path])
      command.run("/bin/chmod",
                  print_stderr:,
                  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` and `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 12

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 33

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
        FileUtils.rm_r p
      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 23

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 129

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 106

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 111

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