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brew-rmtree.rb
84 lines (65 loc) · 2.13 KB
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brew-rmtree.rb
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require 'keg'
require 'formula'
require 'shellwords'
module BrewRmtree
USAGE = <<-EOS.undent
DESCRIPTION
`rmtree` allows you to remove a formula entirely, including all of its dependencies,
unless of course, they are used by another formula.
Warning:
Not all formulas declare their dependencies and therefore this command may end up
removing something you still need. It should be used with caution.
USAGE
brew rmtree formula1 [formula2] [formula3]...
Examples:
brew rmtree gcc44 gcc48 # Removes 'gcc44' and 'gcc48' and their dependencies
EOS
module_function
def bash(command)
escaped_command = Shellwords.escape(command)
return %x! bash -c #{escaped_command} !
end
def rmtree
if ARGV.size < 1 or ['-h', '?', '--help'].include? ARGV.first
puts USAGE
exit 0
end
raise KegUnspecifiedError if ARGV.named.empty?
if not ARGV.force?
ARGV.named.each do |keg_name|
puts bash "brew uninstall #{keg_name}"
deps = bash "join <(brew leaves) <(brew deps #{keg_name})"
if deps.length > 0
puts "Found lingering dependencies"
puts deps.chomp
deps = deps.split("\n")
deps.each do |dep|
dep = dep.chomp
if !dep.empty?
# Check if anything currently installed uses the dependency
dep_deps = bash "brew uses --installed #{dep}"
dep_deps = dep_deps.chomp
if dep_deps.length > 0
puts "Not removing dependency #{dep} because other installed packages depend on it:"
puts dep_deps
else
# Nothing claims to depend on it
puts "Removing dependency #{dep}..."
puts bash "brew rmtree #{dep}"
end
end
end
else
puts "No dependencies left on system for #{keg_name}."
end
end
else
puts "--force is not supported."
end
rescue MultipleVersionsInstalledError => e
ofail e
puts "Use `brew rmtree --force #{e.name}` to remove all versions."
end
end
BrewRmtree.rmtree
exit 0