Module:Convert default

local getArgs = require('Module:Arguments').getArgs local TableTools = require('Module:TableTools') local ConvertData = require('Module:Convert/data').all_units

local p = {}

function p.main(frame) local args = getArgs(frame, {		frameOnly = true,		trim = true	})

return p._main(frame, args) end

function resolveUnit( unit ) -- Resolves a unit by name to its canonical name. local unitData = ConvertData[unit] if unitData then if unitData["target"] then -- Unit alias return unitData["target"] else -- Not an alias return unit end else -- Not a valid unit return nil end end

function callConvert( frame, args, input, from ) local convertArgs = TableTools.shallowClone( args ) -- Shift all numbered parameters up by 1. local i = 2 while args[i] ~= nil do		convertArgs[i + 1] = args[i] i = i + 1 end -- Set the input value and unit local resolvedFrom = resolveUnit( from ) convertArgs[1] = input convertArgs[2] = resolvedFrom -- Wipe custom arguments convertArgs["default-unit"] = nil convertArgs["defaultUnit"] = nil convertArgs["default unit"] = nil convertArgs["default-units"] = nil convertArgs["defaultUnits"] = nil convertArgs["default units"] = nil -- Remove duplicate units in output units (if available) -- Avoid doing this if there are custom display parameters set. if convertArgs[3] ~= nil and convertArgs["disp"] == nil then local outputUnits = mw.text.split( mw.text.trim( convertArgs[3] ), "%s" ) local j = 1 while outputUnits[j] ~= nil do			mw.logObject(resolveUnit( outputUnits[j] ), resolvedFrom) if resolveUnit( outputUnits[j] ) == resolvedFrom then -- Duplicate unit. Remove it. table.remove( outputUnits, j ) -- Do not increment; the next value will now have an index of `j`. else j = j + 1 end end convertArgs[3] = table.concat( outputUnits, " " ) end return frame:expandTemplate{ title = "convert", args = convertArgs } end

function p._main(frame, args) if not args[1] then return nil end local rawInput = mw.text.trim( args[1] ) local defaultUnit = args["default-unit"] or args["defaultUnit"] or args["default unit"] or		args["default-units"] or args["defaultUnits"] or args["default units"] local numSection = mw.ustring.match( rawInput, "^-?[%d,e]+" ) if numSection == nil then -- Raw output (not a determinable number) return rawInput end if mw.ustring.len( rawInput ) == mw.ustring.len( mw.text.trim( numSection ) ) then -- There only exists a number section. -- Convert, and use the default unit (if defined). if not defaultUnit then return error("No default unit is set, and a unitless input was provided.") else return callConvert( frame, args, numSection, defaultUnit ) end else -- There exists a text section. -- Get that section. local textSection = mw.text.trim(			string.sub( rawInput, mw.ustring.len( mw.text.trim( numSection ) ) + 1 )		) if resolveUnit( textSection ) ~= nil then return callConvert( frame, args, numSection, textSection ) else -- Not a unit. Fall back to raw value. return rawInput end end end

return p