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tab: allow retrieving tabs from arbitrary kegs

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This will be useful in places where we need information about things
other than the currently linked keg, such as `brew info`.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
This commit is contained in:
Jack Nagel 2012-01-01 15:22:36 -06:00
parent 07b7dd7a7a
commit dc1be896d8
1 changed files with 16 additions and 2 deletions
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16
Library/Homebrew/tab.rb
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@ -27,6 +27,16 @@ class Tab < OpenStruct
return tab return tab
end end
def self.for_keg keg
path = keg+'INSTALL_RECEIPT.json'
if path.exist?
self.from_file path
else
self.dummy_tab Formula.factory(keg.parent.basename)
end
end
def self.for_formula f def self.for_formula f
f = Formula.factory f unless f.kind_of? Formula f = Formula.factory f unless f.kind_of? Formula
path = HOMEBREW_REPOSITORY + 'Library' + 'LinkedKegs' + f.name + 'INSTALL_RECEIPT.json' path = HOMEBREW_REPOSITORY + 'Library' + 'LinkedKegs' + f.name + 'INSTALL_RECEIPT.json'
@ -42,10 +52,14 @@ class Tab < OpenStruct
# TODO: # TODO:
# This isn't the best behavior---perhaps a future version of Homebrew can # This isn't the best behavior---perhaps a future version of Homebrew can
# treat missing Tabs as errors. # treat missing Tabs as errors.
self.dummy_tab f
end
end
def self.dummy_tab f
Tab.new :used_options => [], Tab.new :used_options => [],
:unused_options => f.options.map { |o, _| o} :unused_options => f.options.map { |o, _| o}
end end
end
def installed_with? opt def installed_with? opt
used_options.include? opt used_options.include? opt