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module HomebrewArgvExtension
def named
@named ||= reject{|arg| arg[0..0] == '-'}
end
def options_only
select {|arg| arg[0..0] == '-'}
end
def formulae
require 'formula'
@formulae ||= downcased_unique_named.map{ |name| Formula.factory name }
raise FormulaUnspecifiedError if @formulae.empty?
@formulae
end
def kegs
require 'keg'
require 'formula'
@kegs ||= downcased_unique_named.collect do |name|
n = Formula.canonical_name(name)
rack = HOMEBREW_CELLAR + if n.include? "/"
# canonical_name returns a path if it was a formula installed via a
# URL. And we only want the name. FIXME that function is insane.
Pathname.new(n).stem
else
n
end
dirs = rack.children.select{ |pn| pn.directory? } rescue []
raise NoSuchKegError.new(name) if not rack.directory? or dirs.length == 0
raise MultipleVersionsInstalledError.new(name) if dirs.length > 1
Keg.new dirs.first
end
raise KegUnspecifiedError if @kegs.empty?
@kegs
end
# self documenting perhaps?
def include? arg
@n=index arg
end
def next
at @n+1 or raise UsageError
end
def force?
flag? '--force'
end
def verbose?
flag? '--verbose' or ENV['HOMEBREW_VERBOSE']
end
def debug?
flag? '--debug' or ENV['HOMEBREW_DEBUG']
end
def quieter?
flag? '--quieter'
end
def interactive?
flag? '--interactive'
end
def one?
flag? '--1'
end
def build_head?
flag? '--HEAD'
end
def build_devel?
include? '--devel'
end
def build_universal?
include? '--universal'
end
def build_from_source?
return true if flag? '--build-from-source' or ENV['HOMEBREW_BUILD_FROM_SOURCE'] \
or not MacOS.lion? or HOMEBREW_PREFIX.to_s != '/usr/local'
options = options_only
options.delete '--universal'
not options.empty?
end
def flag? flag
options_only.each do |arg|
return true if arg == flag
next if arg[1..1] == '-'
return true if arg.include? flag[2..2]
end
return false
end
def usage
require 'cmd/help'
Homebrew.help_s
end
def filter_for_dependencies
# Clears some flags that affect installation, yields to a block, then
# restores to original state.
old_args = clone
flags_to_clear = %w[
--debug -d
--devel
--fresh
--interactive -i
--HEAD
]
flags_to_clear.concat %w[--verbose -v] if quieter?
flags_to_clear.each {|flag| delete flag}
yield
replace old_args
end
private
def downcased_unique_named
# Only lowercase names, not paths or URLs
@downcased_unique_named ||= named.map do |arg|
arg.include?("/") ? arg : arg.downcase
end.uniq
end
end
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