brew-switch: make an internal command.
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require 'formula'
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require 'keg'
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if ARGV.named.length != 2
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onoe "Usage: brew switch <formula> <version>"
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exit 1
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end
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name = ARGV.shift
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version = ARGV.shift
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# Does this formula have any versions?
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f = Formula.factory(name.downcase)
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cellar = f.prefix.parent
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unless cellar.directory?
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onoe "#{name} not found in the Cellar."
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exit 2
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end
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# Does the target version exist?
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unless (cellar+version).directory?
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onoe "#{name} does not have a version \"#{version}\" in the Cellar."
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versions = cellar.subdirs.map { |d| Keg.new(d).version }
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puts "Versions available: #{versions.join(', ')}"
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exit 3
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end
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# Unlink all existing versions
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cellar.subdirs.each do |v|
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keg = Keg.new(v)
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puts "Cleaning #{keg}"
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keg.unlink
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end
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# Link new version, if not keg-only
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if f.keg_only?
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keg = Keg.new(cellar+version)
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keg.optlink
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puts "Opt link created for #{keg}"
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else
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keg = Keg.new(cellar+version)
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puts "#{keg.link} links created for #{keg}"
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end
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49
Library/Homebrew/cmd/switch.rb
Executable file
49
Library/Homebrew/cmd/switch.rb
Executable file
@ -0,0 +1,49 @@
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require 'formula'
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require 'keg'
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module Homebrew
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def switch
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if ARGV.named.length != 2
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onoe "Usage: brew switch <formula> <version>"
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exit 1
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end
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name = ARGV.shift
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version = ARGV.shift
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# Does this formula have any versions?
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f = Formula.factory(name.downcase)
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cellar = f.prefix.parent
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unless cellar.directory?
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onoe "#{name} not found in the Cellar."
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exit 2
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end
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# Does the target version exist?
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unless (cellar+version).directory?
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onoe "#{name} does not have a version \"#{version}\" in the Cellar."
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versions = cellar.subdirs.map { |d| Keg.new(d).version }
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puts "Versions available: #{versions.join(', ')}"
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exit 3
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end
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# Unlink all existing versions
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cellar.subdirs.each do |v|
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keg = Keg.new(v)
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puts "Cleaning #{keg}"
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keg.unlink
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end
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# Link new version, if not keg-only
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if f.keg_only?
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keg = Keg.new(cellar+version)
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keg.optlink
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puts "Opt link created for #{keg}"
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else
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keg = Keg.new(cellar+version)
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puts "#{keg.link} links created for #{keg}"
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end
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end
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end
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