39 lines
946 B
Lua
39 lines
946 B
Lua
local function lzss_decompress(a)local b,c,d,e,j,i,h,g=1,'',''while b<=#a do
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e=c.byte(a,b)b=b+1
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for k=0,7 do h=c.sub
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g=h(a,b,b)if e>>k&1<1 and b<#a then
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i=c.unpack('>I2',a,b)j=1+(i>>4)g=h(d,j,j+(i&15)+2)b=b+1
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end
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b=b+1
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c=c..g
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d=h(d..g,-4^6)end
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end
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return c end
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local function load_velx(addr, path)
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status("loading kernel... "..lsc())
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local fs = component.proxy(addr)
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local h = fs.open(path)
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local magic, fver, comp, lver, osid, psize = string.unpack("<c5BBBBxxxxI3xxxxxxxxxx", fs.read(h, 13))
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if (magic ~= "\27VelX" or fver ~= 1 or osid ~= 127) then
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return
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end
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local rdat = psize
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local dat = ""
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local buf = ""
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repeat
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buf = fs.read(h, rdat)
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if (buf) then
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dat = dat .. buf
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end
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rdat = psize - #dat
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y = y - 1
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status("loading kernel... "..lsc())
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until rdat == 0 or not buf or buf == ""
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y = y - 1
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status("loading kernel... ")
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if (comp == 1) then
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status("decompressing kernel...")
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buf = lzss_decompress(buf)
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end
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end |