holidays/data/build_defs.rb

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require 'yaml'
# Functions are stored in generated files as both Procs (:function) and
# Strings (:function_id). The String version makes comparisons of Procs much
# easier.
#
# TODO:
# - better comparison of existing rules
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def parse_holiday_defs(module_name, files)
regions = []
rules_by_month = {}
custom_methods = {}
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test_strs = []
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files.each do |file|
def_file = YAML.load_file(file)
puts " Loading #{file}"
if def_file['months']
puts " - importing dates..."
def_file['months'].each do |month, definitions|
rules_by_month[month] = [] unless rules_by_month[month]
definitions.each do |definition|
rule = {}
definition.each do |key, val|
rule[key] = val
end
rule['regions'] = rule['regions'].collect { |r| r.to_sym }
regions << rule['regions']
exists = false
rules_by_month[month].each do |ex|
if ex['name'] == rule['name'] and ex['wday'] == rule['wday'] and ex['mday'] == rule['mday'] and ex['week'] == rule['week'] and ex['type'] == rule['type'] and ex['function'] == rule['function'] and ex['observed'] == rule['observed']
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ex['regions'] << rule['regions'].flatten
exists = true
end
end
unless exists
rules_by_month[month] << rule
end
end # /defs.each
end
end
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if def_file['methods']
puts " - importing methods..."
def_file['methods'].each do |name, code|
custom_methods[name] = code
end # /methods.each
end
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if def_file['tests']
puts " - importing testings..."
test_strs << def_file['tests']
end
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end
# Build the definitions
month_strs = []
rules_by_month.each do |month, rules|
month_str = " #{month.to_s} => ["
rule_strings = []
rules.each do |rule|
str = '{'
if rule['mday']
str << ":mday => #{rule['mday']}, "
elsif rule['function']
str << ":function => lambda { |year| Holidays.#{rule['function']} }, "
str << ":function_id => \"#{rule['function'].to_s}\", "
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else
str << ":wday => #{rule['wday']}, :week => #{rule['week']}, "
end
if rule['observed']
str << ":observed => lambda { |date| Holidays.#{rule['observed']}(date) }, "
str << ":observed_id => \"#{rule['observed'].to_s}\", "
end
if rule['type']
str << ":type => :#{rule['type']}, "
end
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# shouldn't allow the same region twice
str << ":name => \"#{rule['name']}\", :regions => [:" + rule['regions'].uniq.join(', :') + "]}"
rule_strings << str
end
month_str << rule_strings.join(",\n ") + "]"
month_strs << month_str
end
month_strs.join(",\n")
# Build the methods
method_str = ''
custom_methods.each do |key, code|
method_str << code + "\n\n"
end
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# Build the module file
module_src =<<-EOM
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module Holidays
# This file is generated by the Ruby Holiday gem.
#
# Definitions loaded: #{files.join(', ')}
#
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# To use the definitions in this file, load them right after you load the
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# Holiday gem:
#
# require 'holidays'
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# require 'holidays/#{module_name.downcase}'
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#
# More definitions are available at http://code.dunae.ca/holidays.
module #{module_name} # :nodoc:
DEFINED_REGIONS = [:#{regions.flatten.uniq.join(', :')}]
HOLIDAYS_BY_MONTH = {
#{month_strs.join(",\n")}
}
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end
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#{method_str}
end
Holidays.merge_defs(Holidays::#{module_name}::DEFINED_REGIONS, Holidays::#{module_name}::HOLIDAYS_BY_MONTH)
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EOM
# Build the test file
unless test_strs.empty?
test_src =<<-EndOfTests
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require File.dirname(__FILE__) + '/../test_helper'
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require 'holidays/#{module_name.downcase}'
# This file is generated by the Ruby Holiday gem.
#
# Definitions loaded: #{files.join(', ')}
class #{module_name.capitalize}DefinitionTests < Test::Unit::TestCase # :nodoc:
def test_#{module_name.downcase}
#{test_strs.join("\n\n")}
end
end
EndOfTests
end
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return module_src, test_src || ''
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end