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Contents
module Acfs
# @api private
#
# Describes a URL with placeholders.
#
class Location
attr_reader :arguments, :raw, :struct, :args
REGEXP= /^:([A-z][A-z0-9_]*)$/
def initialize(uri, args = {})
@raw = URI.parse uri
@args = args
@struct = raw.path.split('/').reject(&:empty?).map{|s| s =~ REGEXP ? $1.to_sym : s }
@arguments = struct.select{|s| Symbol === s }
end
def build(args = {})
unless Hash === args
raise ArgumentError.new "URI path arguments must be a hash, `#{args.inspect}' given."
end
self.class.new raw.to_s, args.merge(self.args)
end
def extract_from(*args)
args = Hash.new.tap do |collect|
arguments.each{|key| collect[key] = extract_arg key, args }
end
build args
end
def str
uri = raw.dup
uri.path = URI.escape '/' + struct.map{|s| lookup_arg(s, args) }.join('/')
uri.to_s
end
def raw_uri
raw.to_s
end
alias_method :to_s, :raw_uri
private
def extract_arg(key, hashes)
hashes.each_with_index do |hash, index|
return (index == 0 ? hash.delete(key) : hash.fetch(key)) if hash.has_key?(key)
end
nil
end
def lookup_arg(arg, args)
Symbol === arg ? lookup_replacement(arg, args) : arg
end
def lookup_replacement(sym, args)
value = get_replacement(sym, args).to_s
return value unless value.empty?
raise ArgumentError.new "Cannot replace path argument `#{sym}' with empty string."
end
def get_replacement(sym, args)
args.fetch(sym.to_s) do
args.fetch(sym) do
if args[:raise].nil? || args[:raise]
raise ArgumentError.new "URI path argument `#{sym}' missing on `#{to_s}'. Given: `#{args}.inspect'"
else
":#{sym}"
end
end
end
end
end
end
Version data entries
42 entries across 42 versions & 1 rubygems