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| − | -- This module converts a number into its written English form.
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| − | -- For example, "2" becomes "two", and "79" becomes "seventy-nine".
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| − | local getArgs = require('Module:Arguments').getArgs
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| − |
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| − | local p = {}
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| − |
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| − | local max = 100 -- The maximum number that can be parsed.
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| − |
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| − | local ones = {
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| − | [0] = 'zero',
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| − | [1] = 'one',
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| − | [2] = 'two',
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| − | [3] = 'three',
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| − | [4] = 'four',
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| − | [5] = 'five',
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| − | [6] = 'six',
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| − | [7] = 'seven',
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| − | [8] = 'eight',
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| − | [9] = 'nine'
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| − | }
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| − |
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| − | local specials = {
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| − | [10] = 'ten',
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| − | [11] = 'eleven',
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| − | [12] = 'twelve',
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| − | [13] = 'thirteen',
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| − | [15] = 'fifteen',
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| − | [18] = 'eighteen',
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| − | [20] = 'twenty',
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| − | [30] = 'thirty',
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| − | [40] = 'forty',
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| − | [50] = 'fifty',
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| − | [60] = 'sixty',
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| − | [70] = 'seventy',
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| − | [80] = 'eighty',
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| − | [90] = 'ninety',
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| − | [100] = 'one hundred'
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| − | }
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| − |
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| − | local formatRules = {
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| − | {num = 90, rule = 'ninety-%s'},
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| − | {num = 80, rule = 'eighty-%s'},
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| − | {num = 70, rule = 'seventy-%s'},
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| − | {num = 60, rule = 'sixty-%s'},
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| − | {num = 50, rule = 'fifty-%s'},
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| − | {num = 40, rule = 'forty-%s'},
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| − | {num = 30, rule = 'thirty-%s'},
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| − | {num = 20, rule = 'twenty-%s'},
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| − | {num = 10, rule = '%steen'}
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| − | }
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| − |
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| − | function p.main(frame)
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| − | local args = getArgs(frame)
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| − | local num = tonumber(args[1])
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| − | local success, result = pcall(p._main, num)
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| − | if success then
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| − | return result
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| − | else
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| − | return string.format('<strong class="error">Error: %s</strong>', result) -- "result" is the error message.
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| − | end
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| − | return p._main(num)
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| − | end
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| − |
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| − | function p._main(num)
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| − | if type(num) ~= 'number' or math.floor(num) ~= num or num < 0 or num > max then
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| − | error('input must be an integer between 0 and ' .. tostring(max), 2)
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| − | end
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| − | -- Check for numbers from 0 to 9.
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| − | local onesVal = ones[num]
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| − | if onesVal then
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| − | return onesVal
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| − | end
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| − | -- Check for special numbers.
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| − | local specialVal = specials[num]
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| − | if specialVal then
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| − | return specialVal
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| − | end
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| − | -- Construct the number from its format rule.
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| − | onesVal = ones[num % 10]
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| − | if not onesVal then
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| − | error('Unexpected error parsing input ' .. tostring(num))
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| − | end
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| − | for i, t in ipairs(formatRules) do
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| − | if num >= t.num then
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| − | return string.format(t.rule, onesVal)
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| − | end
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| − | end
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| − | error('No format rule found for input ' .. tostring(num))
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| − | end
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| − |
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| − | return p
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