imported>DavNvro: Separate error message is returned when title is invalid for task #6

2019-12-30T21:41:48Z

Separate error message is returned when title is invalid for task #6

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-- DavNvro, Google Code-in 2019, Introduction to Lua in Wikipedia

-- Task #2: Working with modules

local p = {}

function p.hello(frame)
return "Hello, world!"
end

p.Hi = function(frame)
strName = frame.args.name or "Jimmy"
return "Hello from Lua to my friend " .. strName .. ". "
end

-- Task #3: Calculations and tests

p.converttemp = function(frame)
local cels = tonumber(frame.args.celsius) or 0
local fahr = ((cels * 9) / 5) + 32
local msg = cels.." degrees Celsius is "..fahr.." degrees Fahrenheit."

if (cels > 9) then
msg = msg.." It is warm."
else
msg = msg.." It is cold."
end

return msg
end

-- Task #4: Loops and tables

function p.timestable(frame)
local numb = tonumber( frame.args.numb ) or 2
local out = numb.." times table "

for i = 1, 12 do
out = out..numb.." times "..i.." is equal to "..i * numb.." "
end

return out
end

function p.people(frame)
local friends = {"Agnetha", "Betty", "Carlos", "Davinder", "Eloise", "Bob", "Robbie", "Tim"}
local msg = ""

for i = 1, #friends do
msg = msg .. "Hello " .. friends[i] .. " "
end

return msg
end

-- Task #5: Lua libraries

function p.sent(frame)
local txt = frame.args.text or ""
return string.upper(string.sub(txt, 1, 1))..string.sub(txt, 2)
end

function p.unpack(frame)
local dmy = frame.args.dmydate or ""
local d, m, y = string.match(dmy, "(%d+) (%w+) (%d+)")
return "Year = " .. y .. " Day = " .. d .. " Month = " .. m
end

-- Task #6: MediaWiki libraries

function p.langs(frame)
local langslist = mw.language.fetchLanguageNames()
local out = ""
local count = 0

for k, v in pairs(langslist) do
out = out .. k .. " - " .. v .. " "
count = count + 1
end

return out .. " = " .. count .. " languages"
end

function p.fallbacklangs(frame)
local lang = frame.args.langcode or "en";
local fallbacks = mw.language.getFallbacksFor(lang);
local out = "";

for i = 1, #fallbacks do
local fallbackLang = fallbacks[i]
out = out..fallbackLang.." - "..mw.language.fetchLanguageName(fallbackLang, fallbackLang).." "
end

out = "Language fallbacks for "..mw.language.fetchLanguageName(lang, "en").." ("..mw.language.fetchLanguageName(lang, lang)..") are: "..out

return out.." "
end

p.pgtitle = function( frame )
local title = frame.args.title
local ttlobj = mw.title.new( title )
local txt = ttlobj.text

return txt
end

function p.pginfo(frame)
local pageTitle = frame.args.title or ""
local page = mw.title.new(pageTitle)

if page == nil then
return "invalid title"
end

local out = page.text.." "

if page.exists then
out = out.."exists "
else
out = out.."does not exist "
end

out = out.."and is "

if not page.isRedirect then
out = out.."not "
end

out = out.."a redirect"

return out
end

return p

Module:Sandbox/DavNvro - Revision history

imported>DavNvro: Separate error message is returned when title is invalid for task #6