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require "yaml"
require "open3"
require "stringio"
BUG_REPORTS_URL = "https://github.com/caskroom/homebrew-cask#reporting-bugs".freeze
class Buffer < StringIO
extend Predicable
attr_predicate :tty?
def initialize(tty = false)
super()
@tty = tty
end
end
# global methods
def odebug(title, *sput)
return unless ARGV.debug?
puts Formatter.headline(title, color: :magenta)
puts sput unless sput.empty?
end
module Hbc
module Utils
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
def self.gain_permissions(path, command_args, command)
tried_permissions = false
tried_ownership = false
begin
yield path
rescue StandardError
# 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 + ["--", current_user, path],
sudo: true)
tried_ownership = true
# retry chflags/chmod after chown
tried_permissions = false
retry # rmtree
end
end
end
def self.current_user
Etc.getpwuid(Process.euid).name
end
def self.path_occupied?(path)
File.exist?(path) || File.symlink?(path)
end
def self.error_message_with_suggestions
<<~EOS
Follow the instructions here:
#{Formatter.url(BUG_REPORTS_URL)}
EOS
end
def self.method_missing_message(method, token, section = nil)
poo = []
poo << "Unexpected method '#{method}' called"
poo << "during #{section}" if section
poo << "on Cask #{token}."
opoo(poo.join(" ") + "\n" + error_message_with_suggestions)
end
end
end
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