Обсуждение модуля:Math/tonumber

--[[

This module convert strings to numbers.

]] local p = {}

-- Get first integer number from string. function p.integer( frame )

   local s = frame.args[1]

s = string.gsub( s, '<[^<>]+>', ) -- strip HTML tags

   s = string.gsub( s, '[^0-9]', ' ' )
   s = mw.text.trim( s )
   s = mw.text.split( s, ' ' )[1]
   
   return tonumber( s )

end

-- Get number from Wikidata quantity. function p.quantity( frame ) local s = frame.args[1]

   s = string.gsub( s, ' ',  )
   s = string.gsub( s, '±.*$',  )

   return tonumber( s )

end

-- Get year value from string. function p.year( frame )

   local n = nil
   local cat = frame.args['cat']

-- 'году' or 'года'

   local yearForm = 'году'
   if frame.args['form'] and frame.args['form'] ~=  then
   	yearForm = frame.args['form']

end

   local s = frame.args[1]

s = string.gsub( s, '<[^<>]+>', ) -- strip HTML tags

   local isBce = string.match( s, 'до%sн\.%s?э' )
   s = string.gsub( s, 'год%sдо%sн\.%s*э\.?',  )
   s = string.gsub( s, 'до%sн\.%s*э\.?',  )

-- Get first 3- or 4-digit integer number from string.

   local sParts = string.gsub( s, '[^0-9]', ' ' )
   sParts = mw.text.trim( sParts )
   sParts = mw.text.split( sParts, ' +' )
   for k, v in pairs( sParts ) do
       if string.match( v, '^[12]?%d%d%d$' ) then
           n = tonumber( v )
           break
       end
   end

-- The entire string is a number. if not n then s = string.gsub( s, '[%[%]]', ) s = mw.text.trim( s ) if string.match( s, '^%d%d?%d?%d?$' ) then n = tonumber( s ) end end

-- Generate category if n then if isBce then if cat then return 'К:' .. cat .. ' ' .. n .. ' ' .. yearForm .. ' до н. э.' end n = -n else if cat then return 'К:' .. cat .. ' ' .. n .. ' ' .. yearForm .. '' end end end

   return n or frame.args['default']

end

return p