Sware: Created page with "local export = {} --[==[ Fetches a data set from Wikimedia Commons by the name `dataset_name`, parses it as a Unicode character key-value table, and returns that table. The table is assumed to have at least two fields with the `name` fields set to `key` and `value`. Both values are expected to be strings. The key string is parsed as a hexadecimal numeric literal (e.g. `0x1234`) and converted into a number. The table returned will then have numbers as the keys and stri..."

2026-05-08T11:58:37Z

Created page with "local export = {} --[==[ Fetches a data set from Wikimedia Commons by the name `dataset_name`, parses it as a Unicode character key-value table, and returns that table. The table is assumed to have at least two fields with the `name` fields set to `key` and `value`. Both values are expected to be strings. The key string is parsed as a hexadecimal numeric literal (e.g. `0x1234`) and converted into a number. The table returned will then have numbers as the keys and stri..."

New page

local export = {}

--[==[
Fetches a data set from Wikimedia Commons by the name `dataset_name`, parses it as a Unicode character key-value table, and returns that table.

The table is assumed to have at least two fields with the `name` fields set to `key` and `value`. Both values are expected to be strings. The key string is parsed as a hexadecimal numeric literal (e.g. `0x1234`) and converted into a number.

The table returned will then have numbers as the keys and strings as the values.]==]
function export.dataset(dataset_name)
local dataset = mw.ext.data.get(dataset_name)

if not dataset then error("Dataset " .. dataset_name .. " not found") end

-- Check schema.
local charcode_index = nil
local value_index = nil
for index, field in ipairs(dataset.schema.fields) do
local field_name_lower = field.name:lower()
if field_name_lower:find("key") and field.type == "string" then
charcode_index = index
elseif field_name_lower:find("value") and field.type == "string" then
value_index = index
end
end

if not charcode_index then error("Character code field (name='key', type='string') not found in data schema.") end
if not value_index then error("Value field (name='value', type='string') not found in data schema.") end

-- Extract values from dataset data.
local result = {}
for _, item in ipairs(dataset.data) do
result[tonumber(item[charcode_index])] = item[value_index]
end

return result
end

return export

Module:Unicode data/datasets - Revision history