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no edit summary
end
end
function Utils.imax(arr)
function Utils.imax(arr, def)
local maxValue
local maxValue
local maxIndex
local maxIndex
end
end
end
end
return maxValue
return maxValue or def
end
end
function Utils.imin(arr)
function Utils.imin(arr, def)
local minValue
local minValue
local minIndex
local minIndex
end
end
end
end
return minValue
return minValue or def
end
end
return result
return result
end
Utils.romanizable = {'zh-hans', 'zh-hant', 'zh-cn', 'zh-tw', 'zh-hk', 'zh-sg', 'zh-mo', 'zh-my', 'ja', 'ko', 'vi'}
Utils.normalization_table = {[' '] = ' ', ['～'] = '~', ['！'] = '!', ['？'] = '?'}
-- checks if string is set and if it's non-empty
function Utils.isset(target)
return target ~= nil and target ~= ""
end
--[[ simulates the (a ? b : c) notation of C/C++ and PHP languages.
Similar to {{#if:{{{a|}}}|{{{b|}}}|{{{c|}}}}} from parser functions. ]]
function Utils.cv(a, b, c)
if a then return b else return c end
end
--slices a table to return another table containing values within a certain range
--source: http://snippets.luacode.org/snippets/Table_Slice_116
function Utils.sliceTable (values,i1,i2)
local res = {}
local n = #values
-- default values for range
i1 = i1 or 1
i2 = i2 or n
if i2 < 0 then
i2 = n + i2 + 1
elseif i2 > n then
i2 = n
end
if i1 < 1 or i1 > n then
return {}
end
local k = 1
for i = i1,i2 do
res[k] = values[i]
k = k + 1
end
return res
end
-- checks if a given page exists
function Utils.exists(page)
if not Utils.isset(page) then return false end
return mw.getCurrentFrame():preprocess('{{#ifexist:' .. page .. '|1|0}}') == '1'
end
--[[ Tries to get contents of a page with given name.
If the function fails it returns nil (page doesn't exist or can't be loaded)
On success it returns the contents of page (it can be be partially preprocessed, so watch out for parser markers). ]]
function Utils.getPage(name)
if not Utils.isset(name) then return nil end
local frame = mw.getCurrentFrame()
-- do a safe call to catch possible errors, like "template doesn't exist"
local stat,page = pcall(frame.expandTemplate, frame, {title = ':' .. name})
if not stat then
-- TODO: 'page' contains the error message. Do some debugging?
return nil
end
return page
end
function Utils.stripTags(text)
if Utils.isset(text) then
local tmp
repeat
tmp = text
-- a pair of tags, like <td style="">...</td>
text = string.gsub(text, '<%s*(%w+).->(.-)<%s*/%s*%1%s*>', '%2')
-- closed tag, like <br/>
text = string.gsub(text, '<%s*%w+%s*/%s*>', '')
until tmp == text
end
return text
end
--[[ Sort table and remove repeating elements.
Since tbl is passed as reference, any changes in it will affect the passed table. ]]
function Utils.trunkTable(tbl)
table.sort(tbl)
local last
local redo
repeat
redo = false
last = nil
for k,v in pairs(tbl) do
if v ~= last then
last = v
else
table.remove(tbl, k)
redo = true
break
end
end
until not redo
end
--[[ Checks if a given value is among the elements of a table and returns its index.
Returns nil if it can't find it. ]]
function Utils.isInTable(tbl, val)
for k,v in pairs(tbl) do
if v == val then return k end
end
return nil
end
--[[ Compare 'n' elements in two tables, starting from 's1' in first table and 's2' in second table. ]]
function Utils.partialTableCompare(t1, t2, s1, s2, n)
if n < 1 then return true end -- basically there's nothing to compare, so no differences were found
for i = 0,(n-1) do
-- Note that nil values are also valid.
if t1[s1+i] ~= t2[s2+i] then return false end
end
return true
end
end
return Utils
return Utils