brew/Library/Homebrew/exceptions.rb
Max Howell 768910283a Refactor the brew command into one file per command
The code was sucking. To the extent that maintenance was hard. It's a lot
easier to work with code that is sensibly split at sensible boundaries. So
now it is more like that.

But the refactor is minimal. Because we don't want you to have more merge
hell than absolutely necessary.

If you merge you will need to pay attention to brew.h.rb (as it is deleted)
and bin/brew (as command logic is gone). It will be painful, but you will just
have to help git out by moving any changes around manually.

Note compatibility.rb. It ensures that any function renames or removals don't
break anything. We're pretty serious about backwards compatibility. And that's
because we encourage you to hack around with the innards. And we couldn't do
that if we would then just make stuff disappear behind your back.
2011-03-12 11:55:02 -08:00

100 lines
1.9 KiB
Ruby

class NotAKegError < RuntimeError
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
@formula = formula
end
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