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Rosetta Code/Find unimplemented tasks
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-- Dependencies: lua >=5.1, lua-requests (>=1.2-0) | |
-- Example Usage: lua find-unimplemented-tasks.lua "Python" | |
-- Output: | |
-- Python has 24 unimplemented programming tasks: | |
-- 15 puzzle solver | |
-- Bitmap/PPM conversion through a pipe | |
-- Bitmap/Read an image through a pipe | |
-- ... | |
local requests = require('requests') | |
local lang = arg[1] | |
local function merge_tables(existing, from_req) | |
local result = existing | |
for _, v in ipairs(from_req) do | |
result[v.title] = true | |
end | |
return result | |
end | |
local function get_task_list(category) | |
local url = 'http://www.rosettacode.org/mw/api.php' | |
local query = { | |
action = 'query', | |
list = 'categorymembers', | |
cmtitle = string.format('Category:%s', category), | |
cmlimit = 500, | |
cmtype = 'page', | |
format = 'json' | |
} | |
local categories = {} | |
while true do | |
local resp = assert(requests.get({ url, params = query }).json()) | |
categories = merge_tables(categories, resp.query.categorymembers) | |
if resp.continue then | |
query.cmcontinue = resp.continue.cmcontinue | |
else | |
break | |
end | |
end | |
return categories | |
end | |
local function get_open_tasks(lang) | |
if not lang then error('Language missing!') end | |
local all_tasks = get_task_list('Programming_Tasks') | |
local lang_tasks = get_task_list(lang) | |
local task_list = {} | |
for t, _ in pairs(all_tasks) do | |
if not lang_tasks[t] then | |
table.insert(task_list, t) | |
end | |
end | |
table.sort(task_list) | |
return task_list | |
end | |
local open_tasks = get_open_tasks(lang) | |
io.write(string.format('%s has %d unimplemented programming tasks: \n', lang, #open_tasks)) | |
for _, t in ipairs(open_tasks) do | |
io.write(string.format(' %s\n', t)) | |
end |
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