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Contents
# frozen_string_literal: true
module Nanoc::Helpers
# @see http://nanoc.ws/doc/reference/helpers/#breadcrumbs
module Breadcrumbs
# @api private
module Int
# e.g. unfold(10.class, &:superclass)
# => [Integer, Numeric, Object, BasicObject]
def self.unfold(obj, &blk)
acc = [obj]
res = yield(obj)
if res
acc + unfold(res, &blk)
else
acc
end
end
# e.g. patterns_for_prefix('/foo/1.0')
# => ['/foo/1.0.*', '/foo/1.*']
def self.patterns_for_prefix(prefix)
prefixes =
unfold(prefix) do |old_prefix|
new_prefix = Nanoc::Identifier.new(old_prefix).without_ext
new_prefix == old_prefix ? nil : new_prefix
end
prefixes.map { |pr| pr + '.*' }
end
end
# @return [Array]
def breadcrumbs_trail
# e.g. ['', '/foo', '/foo/bar']
components = item.identifier.components
prefixes = components.inject(['']) { |acc, elem| acc + [acc.last + '/' + elem] }
if @item.identifier.legacy?
prefixes.map { |pr| @items[Nanoc::Identifier.new('/' + pr, type: :legacy)] }
else
prefixes
.reject { |pr| pr =~ /^\/index\./ }
.map do |pr|
if pr == ''
@items['/index.*']
else
prefix_patterns = Int.patterns_for_prefix(pr)
prefix_patterns.lazy.map { |pat| @items[pat] }.find(&:itself)
end
end
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems