63 lines
1.8 KiB
Lua
63 lines
1.8 KiB
Lua
local uuidmgr = {}
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local uuidstorage = {}
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local storeheader = "c32BH"
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do
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local store = io.open("uuidstore.dat", "r")
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if store then
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pcall(function()
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local count = string.unpack("H", store:read(2))
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for i=1, count do
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local uuid, clen, ilen = storeheader:unpack(store:read(storeheader:packsize()))
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local cname, id = store:read(clen), store:read(ilen)
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uuidstorage[cname] = uuidstorage[cname] or {}
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uuidstorage[cname][id] = uuid
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end
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store:close()
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end)
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end
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end
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function uuidmgr.lookup(component, identifier)
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uuidstorage[component] = uuidstorage[component] or {}
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local uuid = uuidstorage[component][identifier]
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if not uuid then
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uuid = modules.random.uuid()
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if native.debug then
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lprint(string.format("DEBUG: Registed component of type %s with identifier %s as uuid %s", component, identifier, uuid))
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end
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uuidstorage[component][identifier] = uuid
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uuidmgr.store()
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else
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if native.debug then
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lprint(string.format("DEBUG: Looked up component of type %s with identifier %s as uuid %s", component, identifier, uuid))
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end
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end
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return uuid
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end
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function uuidmgr.store()
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local store = io.open("uuidstore.dat", "w")
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local saved_ids = {}
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for component, ids in pairs(uuidstorage) do
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for id, uuid in pairs(ids) do
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table.insert(saved_ids, {uuid=uuid, component=component, id=id})
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end
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end
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if native.debug then
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lprint(string.format("DEBUG: Saving %d static UUIDs", #saved_ids))
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end
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store:write(string.pack("H", #saved_ids))
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for i=1, #saved_ids do
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local uuid, component, id = saved_ids[i].uuid, saved_ids[i].component, saved_ids[i].id
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store:write(storeheader:pack(uuid, #component, #id),component,id)
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if native.debug then
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lprint(string.format("DEBUG: Saving %s:%s as %s", component, id, uuid))
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end
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end
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store:close()
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end
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return uuidmgr |