wehub-resource-sync
94 lines
2.2 KiB
Lua
94 lines
2.2 KiB
Lua
-- Bundled from https://github.com/pygy/require.lua
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-- License MIT
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--- usage:
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-- require = require"require".require
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-- :o)
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local error, ipairs, newproxy, tostring, type
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= error, ipairs, newproxy, tostring, type
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local t_concat = table.concat
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--- Helpers
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local function checkstring(s)
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local t = type(s)
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if t == "string" then
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return s
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elseif t == "number" then
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return tostring(s)
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else
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error("bad argument #1 to 'require' (string expected, got "..t..")", 3)
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end
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end
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--- for Lua 5.1
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local package, p_loaded, setmetatable = package, package.loaded, setmetatable
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local sentinel do
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local function errhandler() error("the require() sentinel can't be indexed or updated", 2) end
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sentinel = newproxy and newproxy() or setmetatable({}, {__index = errhandler, __newindex = errhandler, __metatable = false})
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end
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local function require51 (name)
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name = checkstring(name)
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if p_loaded[name] == sentinel then
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error("loop or previous error loading module '"..name.."'", 2)
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end
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local module = p_loaded[name]
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if module then return module end
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local msg = {}
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local loader
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for _, searcher in ipairs(package.loaders) do
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loader = searcher(name)
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if type(loader) == "function" then break end
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if type(loader) == "string" then
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-- `loader` is actually an error message
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msg[#msg + 1] = loader
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end
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loader = nil
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end
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if loader == nil then
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error("module '" .. name .. "' not found: "..t_concat(msg), 2)
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end
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p_loaded[name] = sentinel
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local res = loader(name)
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if res ~= nil then
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module = res
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elseif p_loaded[name] == sentinel or not p_loaded[name] then
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module = true
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else
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module = p_loaded[name]
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end
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p_loaded[name] = module
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return module
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end
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local module = {
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VERSION = "0.1.8",
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require51 = require51,
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}
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if _VERSION == "Lua 5.1" then module.require = require51 end
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--- rerequire :o)
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for _, o in ipairs{
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{"rerequiredefault", require},
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{"rerequire", module.require},
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{"rerequire51", require51},
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} do
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local rereq, req = o[1], o[2]
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module[rereq] = function(name)
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p_loaded[name] = nil
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return req(name)
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end
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end
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return module
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