Changes
alter pageExists so that title.exists is caught by pcall
-- This module finds the highest existing archive number for a set of talk
-- archive pages.
local p = {}
local function pageExists(page)
local success, exists = pcall(function()
return mw.title.new(page).exists
end)
return success and exists
end
local function midPoint(lower, upper)
return math.floor(lower + (upper - lower) / 2)
end
local function findHighestArchive(prefix, i, lower, upper)
if i < 1 then
return nil
elseif pageExists(prefix .. tostring(i)) then
lower = i
if upper and i + 1 == upper then
return i
elseif upper then
i = midPoint(lower, upper)
else
i = i * 2
end
return findHighestArchive(prefix, i, lower, upper)
else
upper = i
lower = lower or 0
i = midPoint(lower, upper)
return findHighestArchive(prefix, i, lower, upper)
end
end
function p._main(prefix)
if type(prefix) ~= 'string' or not prefix:find('%S') then
error('no prefix supplied to [[Module:Highest archive number]]', 2)
end
return findHighestArchive(prefix, 10)
end
function p.main(frame)
local args = require('Module:Arguments').getArgs(frame, {
trim = false,
removeBlanks = false,
wrappers = 'Template:Highest archive number'
})
local prefix = args[1]
return p._main(prefix)
end
return p
-- archive pages.
local p = {}
local function pageExists(page)
local success, exists = pcall(function()
return mw.title.new(page).exists
end)
return success and exists
end
local function midPoint(lower, upper)
return math.floor(lower + (upper - lower) / 2)
end
local function findHighestArchive(prefix, i, lower, upper)
if i < 1 then
return nil
elseif pageExists(prefix .. tostring(i)) then
lower = i
if upper and i + 1 == upper then
return i
elseif upper then
i = midPoint(lower, upper)
else
i = i * 2
end
return findHighestArchive(prefix, i, lower, upper)
else
upper = i
lower = lower or 0
i = midPoint(lower, upper)
return findHighestArchive(prefix, i, lower, upper)
end
end
function p._main(prefix)
if type(prefix) ~= 'string' or not prefix:find('%S') then
error('no prefix supplied to [[Module:Highest archive number]]', 2)
end
return findHighestArchive(prefix, 10)
end
function p.main(frame)
local args = require('Module:Arguments').getArgs(frame, {
trim = false,
removeBlanks = false,
wrappers = 'Template:Highest archive number'
})
local prefix = args[1]
return p._main(prefix)
end
return p
