/
number.rb
224 lines (184 loc) · 5.73 KB
/
number.rb
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# encoding: utf-8
require 'zhongwen_tools/regex'
require 'zhongwen_tools/zhongwen'
require 'zhongwen_tools/romanization/pinyin'
require 'zhongwen_tools/number/number_table'
module ZhongwenTools
# Number.to_pyn, to_i, to_zhs, etc.
if RUBY_VERSION >= "2.4.0"
CONVERTIBLE_OBJECTS = [String, Integer]
NUMBER_CLASSES = [Integer]
else
CONVERTIBLE_OBJECTS = [String, Integer, Fixnum, Bignum]
NUMBER_CLASSES = [Fixnum, Integer, Bignum]
end
module Number
def self.number?(obj)
case obj
when String
regex = /([\d]|#{ZhongwenTools::Regex.zh_numbers}){1,}/
"#{obj}".gsub(regex, '') == ''
when Integer, Float
true
end
end
%w(i zhs zht pyn).each do |action|
define_singleton_method("to_#{ action }") do |*args|
obj, from, separator = args
from ||= number_type(obj)
convert(obj, action.to_sym, from.to_sym, separator)
end
end
def self.to_zh(obj, type = :zhs, from = nil)
case type.to_sym
when :zht
to_zht(obj, from)
else
to_zhs(obj, from)
end
end
private
def self.convert(obj, to, from, separator = '')
fail ArgumentError unless [:zhs, :zht, :i, :pyn].include?(to.to_sym)
fail ArgumentError unless CONVERTIBLE_OBJECTS.include?(obj.class)
number = convert_from from, to, obj
if to == :i
combine_integers(number)
elsif to == :pyn
regex = /#{ %w(yi4 wan4 qian1 bai2 shi2).map { |x| 'ling2\-' + x }.join('|')}/
finalize_number(number, '-').gsub(regex, '').gsub(/\-+/, '-').gsub(/\-$/, '')
else
finalize_number(number)
end
end
def self.number_type(obj)
klass = obj.class
if NUMBER_CLASSES.include?(klass)
:i
else
if ZhongwenTools::Zhongwen.zh?(obj)
if zht?(obj)
:zht
else
:zhs
end
else # assume it is pyn
# FIXME: might need to convert to pyn
:pyn
end
end
end
def self.zht?(str)
str[/#{ZhongwenTools::Regex.zht_numbers }*/] == str
end
def self.zhs?(str)
!zht?(str)
end
def self.convert_from(from, to, number)
if from == :zht
convert_from_zh(to, number)
elsif from == :zhs
convert_from_zh(to, number)
elsif from == :i
convert_from_integer(to, number)
elsif from == :pyn
convert_from_pyn(to, number)
end
end
def self.convert_from_pyn(to, pyn)
# convert to pyn
# split the pyn and then
pyns = ZhongwenTools::Romanization::Pinyin.split_pyn(pyn)
pyns.map do |p|
convert_number(p).fetch(to) { p }
end
end
def self.convert_from_zh(to, number)
converted_number = number.chars.map do |zh|
convert_number(zh).fetch(to) { zh }
end
converted_number
end
def self.combine_integers(integers)
return combine_year(integers) if year?(integers)
number = 0
length = integers.size
skipped = false
integers.each_with_index do |curr_num, i|
next if skipped == i
if (i + 2) <= length
number, i = combine_integer(integers, number, curr_num, i)
skipped = i + 1
else
number = adjust_integer(number, curr_num)
end
end
number
end
def self.year?(integers)
integers.select { |i| i < 10 }.size == integers.size
end
def self.combine_year(integers)
integers.map(&:to_s).join.to_i
end
def self.combine_integer(integers, result, curr_num, i)
next_number = integers[i + 1]
result += next_number * curr_num if number_multiplier?(next_number)
[result, i]
end
def self.adjust_integer(number, curr_num)
number_multiplier?(curr_num) ? number * curr_num : number + curr_num
end
def self.number_multiplier?(number)
[10, 100, 1_000, 10_000, 100_000_000].include? number
end
def self.convert_from_integer(to, int)
# FIXME: this will fail for numbers over 1 billion.
result = []
nums = convert_integer_to_reversed_array_of_integers(int)
nums.each_with_index do |num, i|
wan = wan_level(wan, i)
if i == 0
result << convert_integer(num, to) unless num == 0
else
if i < 5
result << convert_wan_level(i, to)
elsif i == 8
result << convert_wan_level(i, to)
else
result << "#{ convert_wan_level(i - (i / 4 * 4), to) }#{ convert_wan_level((i / 4 * 4), to) }"
end
# checks the wan level and ...
result << convert_integer(num, to) if wan_ok?(num, wan, i)
end
end
result.reverse!
end
def self.convert_integer_to_reversed_array_of_integers(int)
int.to_s.chars.to_a.reverse.map(&:to_i)
end
def self.wan_ok?(num, wan, i)
(num == 1 && (10**(i) / 10_000**wan) != 10) || num != 1
end
def self.wan_level(wan, i)
wan ||= 0
wan += 1 if (i + 1) % 5 == 0
wan
end
def self.convert_wan_level(i, to)
convert_integer((10**(i)), to) || convert_integer((10**(i) / 10_000), to) || convert_integer((10**(i) / 10_000**2), to)
end
def self.convert_integer(int, to)
NUMBERS_TABLE.find { |x| x[:i] == int }.fetch(to) { 0 }
end
def self.convert_number(number)
NUMBERS_TABLE.find { |x| x[:zhs] == number || x[:zht] == number || x[:pyn] == number }
end
def self.finalize_number(number, separator = '')
# FIXME: is finalize_number the best name you can think of?
# NOTE: Figuring out usage of "liang" vs. "er" is pretty
# difficult, so always use "er" instead.
number.join(separator).gsub(/零#{ Regex.zh_number_multiple }*/u, '')
end
end
end