Module:Export cargo table

local trim = mw.text.trim local nowiki = mw.text.nowiki local cargo = mw.ext.cargo

-- cache local currentFrame

-- helper function local getArg = function(key) local value = currentFrame.args[key] if not value then return nil end value = trim(value) if value == '' then return nil else return value end end

-- credit: http://richard.warburton.it -- this version is with trim. local function explode(div,str) if (div=='') then return false end local pos,arr = 0,{} -- for each divider found for st,sp in function return string.find(str,div,pos,true) end do		arr[#arr + 1] = trim(string.sub(str,pos,st-1)) -- Attach chars left of current divider pos = sp + 1 -- Jump past current divider end arr[#arr + 1] = trim(string.sub(str,pos)) -- Attach chars right of last divider return arr end

---

return { go = function(frame) -- input arguments currentFrame = frame local _table, _fields = getArg('_table'), getArg('_fields') local _limit, _delimiter = getArg('_limit'), getArg('_delimiter') -- convert comma-separated string to table local fieldsArray = explode(',', _fields) -- "infinite" limit if _limit == '-1' then _limit = 10^12 -- there shouldn't be a table with more than a trillion rows end -- array of lines that will be concatenated into the output string local outputLines = {} -- query the table and iterate over its rows local queryResult = cargo.query(_table, _fields, { limit = _limit }) for _, row in ipairs(queryResult) do			local fieldStrs = {} -- iterate over the fields, in the order they were input in the argument for fieldId = 1, #fieldsArray do				local fieldName = fieldsArray[fieldId] local fieldValue = row[fieldName] if fieldValue ~= '' then table.insert(fieldStrs, fieldName .. '=' .. nowiki(fieldValue)) end end local thisline = '' table.insert(outputLines, thisline) end return table.concat(outputLines, _delimiter) end,

}