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class UsageError <RuntimeError; end
class FormulaUnspecifiedError <UsageError; end
class KegUnspecifiedError <UsageError; end
class MultipleVersionsInstalledError <RuntimeError
attr :name
def initialize name
@name = name
super "#{name} has multiple installed versions"
end
end
class NotAKegError < RuntimeError; end
class NoSuchKegError <RuntimeError
attr :name
def initialize name
@name = name
super "No such keg: #{HOMEBREW_CELLAR}/#{name}"
end
end
class FormulaUnavailableError < RuntimeError
attr :name
def initialize name
@name = name
super "No available formula for #{name}"
end
end
module Homebrew
class InstallationError < RuntimeError
attr :formula
def initialize formula, message=""
super message
@formula = formula
end
end
end
class FormulaAlreadyInstalledError < Homebrew::InstallationError
def message
"Formula already installed: #{formula}"
end
end
class FormulaInstallationAlreadyAttemptedError < Homebrew::InstallationError
def message
"Formula installation already attempted: #{formula}"
end
end
class UnsatisfiedExternalDependencyError < Homebrew::InstallationError
attr :type
def initialize formula, type
@type = type
@formula = formula
end
def message
<<-EOS.undent
Unsatisfied dependency: #{formula}
Homebrew does not provide #{type.to_s.capitalize} dependencies, #{tool} does:
#{command_line} #{formula}
EOS
end
private
def tool
case type
when :python then 'pip'
when :ruby, :jruby then 'rubygems'
when :perl then 'cpan'
end
end
def command_line
case type
when :python
"#{brew_pip}pip install"
when :ruby
"gem install"
when :perl
"cpan -i"
when :jruby
"jruby -S gem install"
end
end
def brew_pip
'brew install pip && ' unless Formula.factory('pip').installed?
end
end
class BuildError < Homebrew::InstallationError
attr :exit_status
attr :command
attr :env
def initialize formula, cmd, args, es
@command = cmd
@env = ENV.to_hash
@exit_status = es.exitstatus rescue 1
args = args.map{ |arg| arg.gsub " ", "\\ " }.join(" ")
super formula, "Failed executing: #{command} #{args}"
end
def was_running_configure?
@command == './configure'
end
end
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