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comparison Main.lua @ 229:25bfbe8b4826

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Account for invalid GUIDs when attempting to extract unit type and ID.
author James D. Callahan III <jcallahan@curse.com>
date Wed, 06 Feb 2013 10:27:38 -0600
parents 3dd05b29bc6f
children 85f113524b19
comparison
equal deleted inserted replaced
228:6c78c5c7aee4 229:25bfbe8b4826
405 end 405 end
406 406
407 407
408 local ParseGUID 408 local ParseGUID
409 do 409 do
410 local UNIT_TYPES = private.UNIT_TYPES
410 local UNIT_TYPE_BITMASK = 0x007 411 local UNIT_TYPE_BITMASK = 0x007
411 412
412 function ParseGUID(guid) 413 function ParseGUID(guid)
413 if not guid then 414 if not guid then
414 return 415 return
415 end 416 end
416 local types = private.UNIT_TYPES 417 local bitfield = tonumber(guid:sub(1, 5))
417 local unit_type = _G.bit.band(tonumber(guid:sub(1, 5)), UNIT_TYPE_BITMASK) 418
418 419 if not bitfield then
419 if unit_type ~= types.PLAYER and unit_type ~= types.PET then 420 return UNIT_TYPES.UNKNOWN
421 end
422 local unit_type = _G.bit.band(bitfield, UNIT_TYPE_BITMASK)
423
424 if unit_type ~= UNIT_TYPES.PLAYER and unit_type ~= UNIT_TYPES.PET then
420 return unit_type, tonumber(guid:sub(6, 10), 16) 425 return unit_type, tonumber(guid:sub(6, 10), 16)
421 end 426 end
422 return unit_type 427 return unit_type
423 end 428 end
424 end -- do-block 429 end -- do-block