Module: Wareki::Utils

Defined in:
lib/wareki/utils.rb

Class Method Summary collapse

Class Method Details

._to_date(d) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 119

def _to_date(d)
  if d.kind_of? ::Date
    d # nothing to do
  elsif d.kind_of?(Time)
    d.to_date
  else
    ::Date.jd(d.to_i)
  end
end

._to_jd(d) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 129

def _to_jd(d)
  if d.kind_of? ::Date
    d.jd
  elsif d.kind_of?(Time)
    d.to_date.jd
  else
    d.to_i
  end
end

.alt_month_name(month) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 115

def alt_month_name(month)
  ALT_MONTH_NAME[month - 1]
end

.alt_month_name_to_i(name) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 110

def alt_month_name_to_i(name)
  i = ALT_MONTH_NAME.index(name) or return false
  i + 1
end

.find_date_ary(d) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 139

def find_date_ary(d)
  d = _to_date(d).new_start(::Date::GREGORIAN)
  if d.jd >= GREGORIAN_START
    return [d.year, d.month, d.day, false]
  end

  yobj = find_year(d) or raise UnsupportedDateRange, "Unsupported date: #{d.inspect}"
  month = 0
  is_leap = false
  if yobj.month_starts.last <= d.jd
    month = yobj.month_starts.count
  else
    month = yobj.month_starts.find_index {|m| d.jd <= (m - 1) }
  end
  month_start = yobj.month_starts[month-1]
  is_leap = (yobj.leap_month == (month - 1))
  if yobj.leap_month && yobj.leap_month < month
    month -= 1
  end
  [yobj.year, month, d.jd - month_start +1, is_leap]
end

.find_era(d) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 166

def find_era(d)
  jd = _to_jd(d)
  e = ERA_DEFS.bsearch{|e| e.end > jd }
  e.start > jd and return nil
  e
end

.find_year(d) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 161

def find_year(d)
  jd = _to_jd(d)
  YEAR_DEFS.bsearch{|y| y.end > jd }
end

.i_to_kan(num, opts = {}) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 47

def i_to_kan(num, opts = {})
  ret = ''
  {
    '京' => 10000000000000000,
    '兆' => 1000000000000,
    '億' => 100000000,
    '万' => 10000,
    ''   => 1,
  }.each do |unit4, rank4|
    i4 = (num / rank4).to_i % 10000
    if i4 == 0
      next
    elsif i4 == 1
      ret += "一#{unit4}"
      next
    end
    {
      '千' => 1000,
      '百' => 100,
      '十' => 10,
      ''   => 1,
    }.each do |unit1, rank1|
      i1 = (i4 / rank1).to_i % 10
      if i1 == 0
        next
      elsif i1 == 1 && unit1 != ""
        ret += unit1
      else
        ret += i1.to_s.tr('123456789', '一二三四五六七八九') + unit1
      end
    end
    ret += unit4
  end
  ret
end

.i_to_zen(num) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 83

def i_to_zen(num)
  num.to_s.tr('0123456789', '０１２３４５６７８９')
end

.kan_to_i(str) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 4

def kan_to_i(str)
  ret = 0
  curnum = nil
  str == "零" and return 0
  str.to_s.each_char do |c|
    case c
    when *%w(正 元 朔 一 二 三 四 五 六 七 八 九 肆 1 2 3 4 5 6 7 8 9 １ ２ ３ ４ ５ ６ ７ ８ ９)
      if curnum
        curnum *= 10
      else
        curnum = 0
      end
      curnum += c.tr("一二三四五六七八九１２３４５６７８９肆元朔正", "1234567891234567894111").to_i
    when "〇", "０", "0"
      curnum and curnum *= 10
    when "卄", "廿"
      ret += 20
      curnum = nil
    when "卅", "丗"
      ret += 30
      curnum = nil
    when "卌"
      ret += 40
      curnum = nil
    when "皕"
      ret += 200
      curnum = nil
    when "十", "百", "千", "万", "億", "兆"
      if curnum
        ret += curnum * 10 ** (["十", "百", "千", "万", "億", "兆"].index(c)+1)
      else
        ret += 10 ** (["十", "百", "千", "万", "億", "兆"].index(c)+1)
      end
      curnum = nil
    end
  end
  if curnum
    ret += curnum
    curnum = nil
  end
  ret
end

.last_day_of_month(year, month, is_leap) ⇒ Object 



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# File 'lib/wareki/utils.rb', line 87

def last_day_of_month(year, month, is_leap)
  if year >= GREGORIAN_START_YEAR
    tmp_y = year
    tmp_m = month
    if month == 12
      tmp_y += 1
      tmp_m = 1
    else
      tmp_m += 1
    end
    day = (::Date.new(tmp_y, tmp_m, 1, Date::GREGORIAN)-1).day
  else
    yobj = YEAR_BY_NUM[year] or
      raise UnsupportedDateRange, "Cannot find year #{self.inspect}"
    month_idx = month - 1
    if is_leap || yobj.leap_month && yobj.leap_month < month
      month_idx += 1
    end
    day = yobj.month_days[month_idx]
  end
  day
end