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Line 132:
Line 132:
end
end
−function Utils.imax(arr)
+function Utils.imax(arr, def)
local maxValue
local maxValue
local maxIndex
local maxIndex
Line 141:
Line 141:
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
Line 153:
Line 153:
end
end
end
end
− return minValue
+ return minValue or def
end
end
Line 490:
Line 490:
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