145 lines
3.1 KiB
Ruby
145 lines
3.1 KiB
Ruby
class UsageError <RuntimeError; end
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class FormulaUnspecifiedError <UsageError; end
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class KegUnspecifiedError <UsageError; end
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class MultipleVersionsInstalledError <RuntimeError
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attr :name
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def initialize name
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@name = name
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super "#{name} has multiple installed versions"
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end
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end
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class NoSuchKegError <RuntimeError
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attr :name
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def initialize name
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@name = name
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super "No such keg: #{HOMEBREW_CELLAR}/#{name}"
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end
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end
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module HomebrewArgvExtension
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def named
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@named ||= reject{|arg| arg[0..0] == '-'}
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end
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def options_only
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select {|arg| arg[0..0] == '-'}
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end
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def formulae
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require 'formula'
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@formulae ||= downcased_unique_named.map{ |name| Formula.factory(Formula.resolve_alias(name)) }
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raise FormulaUnspecifiedError if @formulae.empty?
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@formulae
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end
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def kegs
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require 'keg'
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require 'formula'
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@kegs ||= downcased_unique_named.collect do |name|
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d = HOMEBREW_CELLAR + Formula.resolve_alias(name)
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dirs = d.children.select{ |pn| pn.directory? } rescue []
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raise NoSuchKegError.new(name) if not d.directory? or dirs.length == 0
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raise MultipleVersionsInstalledError.new(name) if dirs.length > 1
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Keg.new dirs.first
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end
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raise KegUnspecifiedError if @kegs.empty?
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@kegs
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end
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# self documenting perhaps?
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def include? arg
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@n=index arg
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end
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def next
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at @n+1 or raise UsageError
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end
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def force?
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flag? '--force'
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end
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def verbose?
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flag? '--verbose' or ENV['HOMEBREW_VERBOSE']
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end
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def debug?
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flag? '--debug' or ENV['HOMEBREW_DEBUG']
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end
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def quieter?
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flag? '--quieter'
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end
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def interactive?
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flag? '--interactive'
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end
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def build_head?
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flag? '--HEAD'
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end
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def flag? flag
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options_only.each do |arg|
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return true if arg == flag
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next if arg[1..1] == '-'
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return true if arg.include? flag[2..2]
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end
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return false
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end
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def usage; <<-EOS.undent
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Usage: brew [-v|--version] [--prefix [formula]] [--cache [formula]]
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[--cellar [formula]] [--config] [--env] [--repository]
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[-h|--help] COMMAND [formula] ...
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Principal Commands:
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install formula ... [--ignore-dependencies] [--HEAD]
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list [--unbrewed|--versions] [formula] ...
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search [/regex/] [substring]
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uninstall formula ...
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update
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Other Commands:
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info formula [--github]
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options formula
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deps formula
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uses formula [--installed]
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home formula ...
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cleanup [formula]
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link formula ...
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unlink formula ...
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outdated
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missing
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prune
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doctor
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Informational:
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--version
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--config
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--prefix [formula]
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--cache [formula]
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Commands useful when contributing:
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create URL
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edit [formula]
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audit [formula]
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log formula
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install formula [-vd|-i]
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For more information:
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man brew
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To visit the Homebrew homepage type:
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brew home
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EOS
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end
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private
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def downcased_unique_named
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# Only lowercase names, not paths or URLs
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@downcased_unique_named ||= named.map do |arg|
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arg.include?("/") ? arg : arg.downcase
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end.uniq
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end
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end
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