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93 lines
No EOL
2.9 KiB
Ruby
93 lines
No EOL
2.9 KiB
Ruby
require 'rubygems'
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require 'yaml'
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module Rails
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class VendorGemSourceIndex
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# VendorGemSourceIndex acts as a proxy for the Gem source index, allowing
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# gems to be loaded from vendor/gems. Rather than the standard gem repository format,
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# vendor/gems contains unpacked gems, with YAML specifications in .specification in
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# each gem directory.
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include Enumerable
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attr_reader :installed_source_index
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attr_reader :vendor_source_index
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def initialize(installed_index, vendor_dir=Rails::GemDependency.unpacked_path)
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@installed_source_index = installed_index
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@vendor_dir = vendor_dir
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refresh!
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end
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def refresh!
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# reload the installed gems
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@installed_source_index.refresh!
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vendor_gems = {}
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# handle vendor Rails gems - they are identified by having loaded_from set to ""
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# we add them manually to the list, so that other gems can find them via dependencies
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Gem.loaded_specs.each do |n, s|
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next unless s.loaded_from.empty?
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vendor_gems[s.full_name] = s
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end
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# load specifications from vendor/gems
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Dir[File.join(Rails::GemDependency.unpacked_path, '*')].each do |d|
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spec = load_specification(d)
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next unless spec
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# NOTE: this is a bit of a hack - the gem system expects a different structure
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# than we have.
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# It's looking for:
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# repository
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# -> specifications
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# - gem_name.spec <= loaded_from points to this
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# -> gems
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# - gem_name <= gem files here
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# and therefore goes up one directory from loaded_from, then adds gems/gem_name
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# to the path.
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# But we have:
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# vendor
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# -> gems
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# -> gem_name <= gem files here
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# - .specification
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# so we set loaded_from to vendor/gems/.specification (not a real file) to
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# get the correct behavior.
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spec.loaded_from = File.join(Rails::GemDependency.unpacked_path, '.specification')
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vendor_gems[File.basename(d)] = spec
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end
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@vendor_source_index = Gem::SourceIndex.new(vendor_gems)
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end
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def load_specification(gem_dir)
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spec_file = File.join(gem_dir, '.specification')
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YAML.load_file(spec_file) if File.exist?(spec_file)
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end
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def find_name(*args)
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@installed_source_index.find_name(*args) + @vendor_source_index.find_name(*args)
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end
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def search(*args)
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# look for vendor gems, and then installed gems - later elements take priority
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@installed_source_index.search(*args) + @vendor_source_index.search(*args)
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end
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def each(&block)
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@vendor_source_index.each(&block)
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@installed_source_index.each(&block)
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end
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def add_spec(spec)
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@vendor_source_index.add_spec spec
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end
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def remove_spec(spec)
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@vendor_source_index.remove_spec spec
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end
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def size
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@vendor_source_index.size + @installed_source_index.size
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end
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end
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end |