3f9e88ae69
Simplify access to the different forms of a formula's build options by making options into real objects rather than strings, and expose both the 'name' and 'flag' form.
96 lines
2.5 KiB
Ruby
96 lines
2.5 KiB
Ruby
require 'ostruct'
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require 'formula'
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require 'vendor/multi_json'
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# Inherit from OpenStruct to gain a generic initialization method that takes a
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# hash and creates an attribute for each key and value. `Tab.new` probably
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# should not be called directly, instead use one of the class methods like
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# `Tab.for_install`.
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class Tab < OpenStruct
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def self.for_install f, args
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# Retrieve option flags from command line.
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arg_options = args.options_only
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# Pick off the option flags from the formula's `options` array by
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# discarding the descriptions.
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formula_options = f.build.as_flags
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Tab.new :used_options => formula_options & arg_options,
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:unused_options => formula_options - arg_options,
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:tabfile => f.prefix + "INSTALL_RECEIPT.json",
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:built_bottle => !!args.build_bottle?,
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:tapped_from => f.tap
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end
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def self.from_file path
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tab = Tab.new MultiJson.decode(open(path).read)
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tab.tabfile = path
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return tab
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end
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def self.for_keg keg
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path = keg+'INSTALL_RECEIPT.json'
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if path.exist?
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self.from_file path
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else
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begin
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self.dummy_tab Formula.factory(keg.parent.basename)
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rescue FormulaUnavailableError
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Tab.new :used_options => [],
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:unused_options => [],
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:built_bottle => false,
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:tapped_from => ""
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end
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end
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end
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def self.for_formula f
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f = Formula.factory f unless f.kind_of? Formula
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path = f.linked_keg/'INSTALL_RECEIPT.json'
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if path.exist?
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self.from_file path
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else
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# Really should bail out with an error if a formula was not installed
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# with a Tab. However, there will be lots of legacy installs that have no
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# receipt---so we fabricate one that claims the formula was installed with
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# no options.
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#
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# TODO:
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# This isn't the best behavior---perhaps a future version of Homebrew can
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# treat missing Tabs as errors.
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self.dummy_tab f
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end
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end
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def self.dummy_tab f
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Tab.new :used_options => [],
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:unused_options => f.build.as_flags,
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:built_bottle => false,
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:tapped_from => ""
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end
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def installed_with? opt
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used_options.include? opt
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end
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def options
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used_options + unused_options
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end
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def to_json
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MultiJson.encode({
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:used_options => used_options,
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:unused_options => unused_options,
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:built_bottle => built_bottle,
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:tapped_from => tapped_from
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})
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end
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def write
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tabfile.write to_json
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end
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end
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