mirror of
https://github.com/Adorable-Catgirl/Zorya-NEO.git
synced 2024-12-24 01:48:06 +11:00
39 lines
1.2 KiB
Lua
39 lines
1.2 KiB
Lua
local function load_velx(read, seek, close, name)
|
|
-- Load a VELX format library.
|
|
local magic, fver, compression, lver, osid, arctype, psize, lsize, ssize, rsize = string.unpack(velx_header, read(string.packsize(velx_header)))
|
|
if (magic ~= "\27VelX") then
|
|
return nil, "bad magic ("..magic..")"
|
|
end
|
|
if (osid & 0x7F ~= 0x5A or osid & 0x7F ~= 0x7F) then
|
|
return nil, string.format("wrong os (%x)", osid & 0x7F)
|
|
end
|
|
if (osid & 0x80 > 0) then
|
|
return nil, "not an executable"
|
|
end
|
|
if (compression > 1) then
|
|
return nil, "bad compression"
|
|
end
|
|
if (fver ~= 1) then
|
|
return nil, "wrong version"
|
|
end
|
|
local prog = read(psize)
|
|
if (compression == 1) then
|
|
prog = lzss_decompress(prog)
|
|
end
|
|
seek(lsize+ssize)
|
|
local env = {}
|
|
--[[
|
|
if (arctype == "tsar") then
|
|
env._ARCHIVE = tsar.read(read, seek, close)
|
|
end]]
|
|
if (arctype ~= "\0\0\0\0") then
|
|
local arc = krequire("util_"..arctype)
|
|
if arc then
|
|
env._ARCHIVE = arc.read(read, seek, close)
|
|
end
|
|
elseif (arctype ~= "\0\0\0\0") then
|
|
return nil, "bad arctype ("..arctype..")"
|
|
end
|
|
setmetatable(env, {__index=_G, __newindex=function(_, i, v) _G[i] = v end})
|
|
return load(prog, "="..(name or "(loaded velx)"), "t", env)
|
|
end |