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37a56fa513
FormulaInstaller now attempts to take a lock on a "foo.brewing" file for the formula and all of its dependencies before attempting installation. The lock is an advisory lock implemented using flock(), and as such it only locks out other processes that attempt to take the lock. It also means that it is never necessary to manually remove the lock file, because the lock is not enforced by I/O. The uninstall, link, and unlink commands all learn to respect this lock as well, so that the installation cannot be corrupted by a concurrent Homebrew process, and keg operations cannot occur simultaneously.
51 lines
1.1 KiB
Ruby
51 lines
1.1 KiB
Ruby
require 'keg'
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require 'formula'
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module Homebrew extend self
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def uninstall
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raise KegUnspecifiedError if ARGV.named.empty?
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if not ARGV.force?
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ARGV.kegs.each do |keg|
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keg.lock do
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puts "Uninstalling #{keg}..."
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keg.unlink
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keg.uninstall
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rm_opt_link keg.fname
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end
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end
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else
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ARGV.named.each do |name|
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name = Formula.canonical_name(name)
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# FIXME canonical_name is insane
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raise "Invalid usage" if name.include? '/'
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rack = HOMEBREW_CELLAR/name
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if rack.directory?
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puts "Uninstalling #{name}..."
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rack.children.each do |keg|
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if keg.directory?
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keg = Keg.new(keg)
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keg.unlink
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keg.rmtree
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end
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end
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rack.rmtree
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end
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rm_opt_link name
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end
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end
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rescue MultipleVersionsInstalledError => e
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ofail e
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puts "Use `brew remove --force #{e.name}` to remove all versions."
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end
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def rm_opt_link name
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optlink = HOMEBREW_PREFIX/:opt/name
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optlink.unlink if optlink.symlink?
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end
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end
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