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require 'ostruct'
module Homebrew extend self
def link
raise KegUnspecifiedError if ARGV.named.empty?
mode = OpenStruct.new
mode.overwrite = true if ARGV.include? '--overwrite'
mode.dry_run = true if ARGV.dry_run?
ARGV.kegs.each do |keg|
if keg.linked?
opoo "Already linked: #{keg}"
puts "To relink: brew unlink #{keg.fname} && brew link #{keg.fname}"
next
elsif keg_only?(keg.fname) && !ARGV.force?
opoo "#{keg.fname} is keg-only and must be linked with --force"
puts "Note that doing so can interfere with building software."
next
elsif mode.dry_run && mode.overwrite
print "Would remove:\n" do
keg.link(mode)
end
next
elsif mode.dry_run
print "Would link:\n" do
keg.link(mode)
end
next
end
keg.lock do
print "Linking #{keg}... " do
puts "#{keg.link(mode)} symlinks created"
end
end
end
end
private
def keg_only?(name)
Formula.factory(name).keg_only?
rescue FormulaUnavailableError
false
end
# Allows us to ensure a puts happens before the block exits so that if say,
# an exception is thrown, its output starts on a new line.
def print str, &block
Kernel.print str
puts_capture = Class.new do
def self.puts str
$did_puts = true
Kernel.puts str
end
end
puts_capture.instance_eval(&block)
ensure
puts unless $did_puts
end
end
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