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require 'json'
module Sprockets
module Bower
# Internal: All supported bower.json files.
#
# https://github.com/bower/json/blob/0.4.0/lib/json.js#L7
POSSIBLE_BOWER_JSONS = ['bower.json', 'component.json', '.bower.json']
# Internal: Override resolve_alternates to install bower.json behavior.
#
# load_path - String environment path
# logical_path - String path relative to base
#
# Returns candiate filenames.
def resolve_alternates(load_path, logical_path)
candidates, deps = super
# bower.json can only be nested one level deep
if !logical_path.index('/')
dirname = File.join(load_path, logical_path)
if directory?(dirname)
filenames = POSSIBLE_BOWER_JSONS.map { |basename| File.join(dirname, basename) }
filename = filenames.detect { |fn| self.file?(fn) }
if filename
deps << build_file_digest_uri(filename)
read_bower_main(dirname, filename) do |path|
candidates << path
end
end
end
end
return candidates, deps
end
# Internal: Read bower.json's main directive.
#
# dirname - String path to component directory.
# filename - String path to bower.json.
#
# Returns nothing.
def read_bower_main(dirname, filename)
bower = JSON.parse(File.read(filename), create_additions: false)
case bower['main']
when String
yield File.expand_path(bower['main'], dirname)
when Array
bower['main'].each do |name|
yield File.expand_path(name, dirname)
end
end
end
end
end
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