Module:Shared
From Melvor Idle
Documentation for this module may be created at Module:Shared/doc
--So there are a handful of functions that I'm using in a lot of places
--So rather than continue to copy across the same handful of functions to every single new module
--I'm just going to unify them here
--Here's how you use this:
-- 1. When you're making a new module, add this near the top:
-- local Shared = require( "Module:Shared" )
-- 2. When you need to make a call to one of these functions,
-- just preface it with "Shared."
-- So for example you could call tableCount like so:
-- Shared.tableCount(data)
--This whole module copied wholesale from the Warframe wiki (https://warframe.fandom.com/wiki/Module:Shared)
--I removed a couple irrelevant functions, but otherwise did not change anything
local p = {}
-- iterator sorted by keys
-- For example, if you had a table that looked something like
-- data = {["Cat"] = 5,
-- ["Bat"] = 4,
-- ["Hat"] = 7}
-- You could do
-- for k, v in skpairs(data) do...
-- And your loop would start with k="Bat", v=4 then go to k="Cat", v=5,
-- and finally to k="Hat", v=7
--Originally snagged this from Module:VoidByReward written by User:NoBrainz
function p.skpairs(t, revert)
local keys = {}
for k in pairs(t) do keys[#keys + 1] = k end
if revert ~= nil then
table.sort(keys, function(a, b) return a > b end)
else
table.sort(keys)
end
local i = 0
local iterator = function()
i = i + 1
local key = keys[i]
if key then
return key, t[key]
else
return nil
end
end
return iterator
end
--General purpose function for going through a table after sorting based on a custom sort order
--Taken from https://stackoverflow.com/questions/15706270/sort-a-table-in-lua
function p.spairs(t, order)
-- collect the keys
local keys = {}
for k in pairs(t) do keys[#keys+1] = k end
-- if order function given, sort by it by passing the table and keys a, b,
-- otherwise just sort the keys
if order then
table.sort(keys, function(a,b) return order(t, a, b) end)
else
table.sort(keys)
end
-- return the iterator function
local i = 0
return function()
i = i + 1
if keys[i] then
return keys[i], t[keys[i]]
end
end
end
-- conveniently shifts BLAH to Blah
-- Handy when formatting data in ALL CAPS or all lower case
--Originally snagged this from Module:VoidByReward written by User:NoBrainz
function p.titleCase(head, tail)
if tail == nil then
--Split into two lines because don't want the other return from gsub
local result = string.gsub(head, "(%a)([%w_']*)", p.titleCase)
return result
else
return string.upper(head) .. string.lower(tail)
end
end
-- Returns the number of rows in a table
-- Originally snagged this from Module:VoidByReward written by User:NoBrainz
-- Note from User:Cephalon Scientia:
-- Length operator (#) doesn't work as expected for tables that have been
-- loaded into a module by mw.loadData().
-- Use this function to get all the rows in a table regardless of them
-- being keys, values, or tables
-- pre : table is a table with no explicit nil values
-- post: returns the size of table, ignoring keys with nil values and
-- nil values themselves
-- if table is not of type 'table' then return nil
function p.tableCount(table)
if (type(table) == 'table') then
local count = 0
for _ in pairs(table) do count = count + 1 end
return count
else
return nil
end
end
-- Returns true if the table is empty, false otherwise
function p.tableIsEmpty(table)
if type(table) == 'table' then
for k, v in pairs(table) do
return false
end
return true
else
return nil
end
end
-- Returns the number of indexed elements in a table
-- pre : table is a table with no explicit nil values
-- post: returns the number of indexed elements in a table
-- if table is not of type 'table' then return nil
function p.indexCount(table)
if (type(table) == 'table') then
local count = 0
for _ in ipairs(table) do count = count + 1 end
return count
else
return nil
end
end
--Sorts theTable based on the listed column
function p.tableSort(theTable, sortCol, ascend)
local new function sorter(r1, r2)
if ascend then
return r1[sortCol] < r2[sortCol]
else
return r1[sortCol] > r2[sortCol]
end
end
table.sort(theTable, sorter)
end
--Splits a string based on a sent in separating character
--For example calling splitString ("Lith V1 Relic", " ") would return {"Lith", "V1", "Relic"}
function p.splitString(inputstr, sep)
if sep == nil then
sep = "%s"
end
local t = {}
for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
table.insert(t, str)
end
return t
end
--Returns 'true' if a string starts with something
--For example calling startsWith ("Lith V1 Relic", "Lith") would return true
function p.startsWith(string1, start)
return string.sub(string1, 1, string.len(start)) == start
end
--Adds commas
function p.formatnum(number)
if tonumber(number) == nil then
return number
else
local result = number
while true do
-- Format in blocks of 3 digits at a time until formatting is complete
result, k = string.gsub(result, "^(-?%d+)(%d%d%d)", '%1,%2')
if k == 0 then
break
end
end
return result
end
end
function p.formatNumber(frame)
number = frame.args ~= nil and frame.args[1] or frame
return p.formatnum(number)
end
function p.round(val, maxDigits, minDigits)
if val == nil then
return nil
else
if type(maxDigits) == "table" then
minDigits = maxDigits[2]
maxDigits = maxDigits[1]
end
local result = val..""
local decimals = string.find(result, "%.")
if decimals ~= nil then
decimals = string.len(result) - decimals
else
decimals = 0
end
if maxDigits ~= nil and decimals > maxDigits then
result = string.format("%."..maxDigits.."f", result)
elseif minDigits ~= nil and decimals < minDigits then
result = string.format("%."..minDigits.."f", result)
end
return result
end
end
--From http://lua-users.org/wiki/SimpleRound
function p.round2(num, numDecimalPlaces)
local mult = 10^(numDecimalPlaces or 0)
return math.floor(num * mult + 0.5) / mult
end
-- pre : List is a table or a string
-- Item is the element that is being searched
-- IgnoreCase is a boolean; if false, search is case-sensitive
-- post: returns a boolean; true if element exists in List, false otherwise
function p.contains(List, Item, IgnoreCase)
if List == nil or Item == nil then
return false
end
if IgnoreCase == nil then
IgnoreCase = false
end
if type(List) == "table" then
for key, value in pairs(List) do
if value == Item then
return true, key
elseif IgnoreCase and string.upper(value) == string.upper(Item) then
return true, key
end
end
else
local start = string.find(List, Item)
return start ~= nil
end
return false
end
--Stolen from http://lua-users.org/wiki/StringTrim
--Trims whitespace. Not quite sure how it works.
--I know how it works
--replaces "^%s*(.-)%s*$" with "%1" in str
--^%s*(.-)%s*$ matches:
--^:beginning of string
--%s*:any number of spaces
--(.-):any number of any character, minimum possible, saved to %1
--%s* again
--$: end of string
--%1 inserts the content of the parentheses
--pretty simple if you know the meanings
--User:Giga Martin
function p.trim(str)
return (str:gsub("^%s*(.-)%s*$", "%1"))
end
-- generic function that checks to see if a key exists in a given nested table
-- added by User:Cephalon Scientia
-- pre : table is a nested table
-- key is a string that represents a key name
-- length is a integer that represents the size of outer table;
-- if omitted, length is set to size of outer table
-- post: returns a boolean; true if key exists in table, false otherwise or
-- if key contains a nil value
function p.hasKey(table, key, length)
if (length == nil) then
length = p.tableCount(table)
end
-- iterating through outer table
for i = 1, length, 1 do
local elem = table[i] -- storing one of inner tables into a variable
if (elem[key] ~= nil) then
return true
end
end
return false
end
-- copies the contents of a variable; handy for when you might want to modify an object taken from a data file
-- or any other read-only variable
-- Stolen from https://gist.github.com/tylerneylon/81333721109155b2d244
function p.clone(obj)
if type(obj) ~= 'table' then return obj end
local res = {}
for k, v in pairs(obj) do res[p.clone(k)] = p.clone(v) end
return res
end
-- Euclidean Greatest Common Divisor algorithm
function p.gcd(a, b)
if b ~= 0 then
return p.gcd(b, a % b)
else
return math.abs(a)
end
end
--Formats a pair of numbers as a reduced fraction
function p.fraction(n, d)
local gcd = p.gcd(n, d)
return p.formatnum(n/gcd)..'/'..p.formatnum(d/gcd)
end
--Similar to p.fraction but returns the simplified numerator and denomerator separately without formatting
function p.fractionpair(n, d)
local gcd = p.gcd(n, d)
return n / gcd, d / gcd
end
function p.timeString(timeInSeconds, shorten)
local remain = timeInSeconds
local days, hours, minutes = 0, 0, 0
local isShort = shorten
local pieces = {}
if remain >= 86400 then
days = math.floor(remain / 86400)
remain = remain - days * 86400
if isShort then
table.insert(pieces, days..'d')
elseif days > 1 then
table.insert(pieces, days..' days')
else
table.insert(pieces, days..' day')
end
end
if remain >= 3600 then
hours = math.floor(remain / 3600)
remain = remain - hours * 3600
if isShort then
table.insert(pieces, hours..'h')
elseif hours > 1 then
table.insert(pieces, hours..' hours')
else
table.insert(pieces, hours..' hour')
end
end
if remain >= 60 then
minutes = math.floor(remain / 60)
remain = remain - minutes * 60
if isShort then
table.insert(pieces, minutes..'m')
elseif minutes > 1 then
table.insert(pieces, minutes..' minutes')
else
table.insert(pieces, minutes..' minutes')
end
end
if remain > 0 then
if isShort then
table.insert(pieces, remain..'s')
elseif remain > 1 then
table.insert(pieces, remain..' seconds')
else
table.insert(pieces, remain..' second')
end
end
return table.concat(pieces, ', ')
end
function p.fixPagename(pageName)
local result = pageName
result = string.gsub(result, "%%27", "'")
result = string.gsub(result, "'", "'")
return result
end
--Checks if two tables contain the same value with the same indices
function p.tablesEqual(t1, t2)
if p.tableCount(t1) ~= p.tableCount(t2) then return false end
for i, val in p.skpairs(t1) do
if type(val) ~= type(t2[i]) then
return false
elseif type(val) == 'table' then
if not p.tablesEqual(val, t2[i]) then return false end
elseif t2[i] ~= val then
return false
end
end
return true
end
--Returns a number including the sign, even if positive
function p.numStrWithSign(number)
if number >= 0 then
return '+'..p.formatnum(number)
else
return p.formatnum(number)
end
end
return p
