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#!/System/Library/Frameworks/Ruby.framework/Versions/Current/usr/bin/ruby -W0
std_trap = trap("INT") { exit! 130 } # no backtrace thanks
HOMEBREW_BREW_FILE = ENV['HOMEBREW_BREW_FILE']
if ARGV == %w{--prefix}
puts File.dirname(File.dirname(HOMEBREW_BREW_FILE))
exit 0
end
require 'pathname'
HOMEBREW_LIBRARY_PATH = Pathname.new(__FILE__).realpath.parent.join("Homebrew")
$:.unshift(HOMEBREW_LIBRARY_PATH.to_s)
require 'global'
if ARGV.first == '--version'
puts HOMEBREW_VERSION
exit 0
elsif ARGV.first == '-v'
puts "Homebrew #{HOMEBREW_VERSION}"
# Shift the -v to the end of the parameter list
ARGV << ARGV.shift
# If no other arguments, just quit here.
exit 0 if ARGV.length == 1
end
# Check for bad xcode-select before anything else, because `doctor` and
# many other things will hang
# Note that this bug was fixed in 10.9
if OS.mac? && MacOS.version < :mavericks && MacOS.active_developer_dir == "/"
odie <<-EOS.undent
Your xcode-select path is currently set to '/'.
This causes the `xcrun` tool to hang, and can render Homebrew unusable.
If you are using Xcode, you should:
sudo xcode-select -switch /Applications/Xcode.app
Otherwise, you should:
sudo rm -rf /usr/share/xcode-select
EOS
end
case HOMEBREW_PREFIX.to_s when '/', '/usr'
# it may work, but I only see pain this route and don't want to support it
abort "Cowardly refusing to continue at this prefix: #{HOMEBREW_PREFIX}"
end
if OS.mac? and MacOS.version < "10.5"
abort <<-EOABORT.undent
Homebrew requires Leopard or higher. For Tiger support, see:
https://github.com/mistydemeo/tigerbrew
EOABORT
end
# Many Pathname operations use getwd when they shouldn't, and then throw
# odd exceptions. Reduce our support burden by showing a user-friendly error.
Dir.getwd rescue abort "The current working directory doesn't exist, cannot proceed."
def require? path
require path
rescue LoadError => e
# HACK :( because we should raise on syntax errors but
# not if the file doesn't exist. TODO make robust!
raise unless e.to_s.include? path
end
begin
trap("INT", std_trap) # restore default CTRL-C handler
aliases = {'ls' => 'list',
'homepage' => 'home',
'-S' => 'search',
'up' => 'update',
'ln' => 'link',
'instal' => 'install', # gem does the same
'rm' => 'uninstall',
'remove' => 'uninstall',
'configure' => 'diy',
'abv' => 'info',
'dr' => 'doctor',
'--repo' => '--repository',
'environment' => '--env',
'--config' => 'config',
}
empty_argv = ARGV.empty?
help_regex = /(-h$|--help$|--usage$|-\?$|^help$)/
help_flag = false
cmd = nil
ARGV.dup.each_with_index do |arg, i|
if help_flag && cmd
break
elsif arg =~ help_regex
help_flag = true
elsif !cmd
cmd = ARGV.delete_at(i)
end
end
cmd = aliases[cmd] if aliases[cmd]
sudo_check = Set.new %w[ install link pin unpin upgrade ]
if sudo_check.include? cmd
if Process.uid.zero? and not File.stat(HOMEBREW_BREW_FILE).uid.zero?
raise <<-EOS.undent
Cowardly refusing to `sudo brew #{cmd}`
You can use brew with sudo, but only if the brew executable is owned by root.
However, this is both not recommended and completely unsupported so do so at
your own risk.
EOS
end
end
# Add contributed commands to PATH before checking.
Dir["#{HOMEBREW_LIBRARY}/Taps/*/*/cmd"].each do |tap_cmd_dir|
ENV["PATH"] += "#{File::PATH_SEPARATOR}#{tap_cmd_dir}"
end
# Add SCM wrappers.
ENV["PATH"] += "#{File::PATH_SEPARATOR}#{HOMEBREW_LIBRARY}/ENV/scm"
internal_cmd = require? HOMEBREW_LIBRARY_PATH.join("cmd", cmd) if cmd
# Usage instructions should be displayed if and only if one of:
# - a help flag is passed AND an internal command is matched
# - a help flag is passed AND there is no command specified
# - no arguments are passed
#
# It should never affect external commands so they can handle usage
# arguments themselves.
if empty_argv || (help_flag && (cmd.nil? || internal_cmd))
# TODO - `brew help cmd` should display subcommand help
require 'cmd/help'
puts ARGV.usage
exit ARGV.any? ? 0 : 1
end
if internal_cmd
Homebrew.send cmd.to_s.gsub('-', '_').downcase
elsif which "brew-#{cmd}"
%w[CACHE CELLAR LIBRARY_PATH PREFIX REPOSITORY].each do |e|
ENV["HOMEBREW_#{e}"] = Object.const_get("HOMEBREW_#{e}").to_s
end
exec "brew-#{cmd}", *ARGV
elsif (path = which("brew-#{cmd}.rb")) && require?(path)
exit Homebrew.failed? ? 1 : 0
else
onoe "Unknown command: #{cmd}"
exit 1
end
rescue FormulaUnspecifiedError
abort "This command requires a formula argument"
rescue KegUnspecifiedError
abort "This command requires a keg argument"
rescue UsageError
onoe "Invalid usage"
abort ARGV.usage
rescue SystemExit
puts "Kernel.exit" if ARGV.verbose?
raise
rescue Interrupt => e
puts # seemingly a newline is typical
exit 130
rescue BuildError => e
e.dump
exit 1
rescue RuntimeError, SystemCallError => e
raise if e.message.empty?
onoe e
puts e.backtrace if ARGV.debug?
exit 1
rescue Exception => e
onoe e
puts "#{Tty.white}Please report this bug:"
puts " #{Tty.em}#{OS::ISSUES_URL}#{Tty.reset}"
puts e.backtrace
exit 1
else
exit 1 if Homebrew.failed?
end
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