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Code Issues Releases Wiki Activity

Improve the compression, and get rid of imitclaw (will be outdated)

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20kdc 2018-06-10 00:06:12 +01:00
parent 9254745a33
commit 8ab47c96b3
8 changed files with 84 additions and 262 deletions
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1
.gitignore vendored
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@ -20,6 +20,7 @@ repobuild/*/*
repobuild/*/*/
repobuild/*/*/*
laboratory/ocemu.cfg
laboratory/*/
laboratory/*/*
laboratory/*/*/

78
com2/bdivide.lua
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@ -1,61 +1,45 @@
-- This is released into the public domain.
-- No warranty is provided, implied or otherwise.
-- BDIVIDE
-- BDIVIDE r5 edition
-- Algorithm simplified for smaller implementation and potentially better compression
-- format:
-- 0-127 for constants
-- <block + 128>, <(len - 3) * 2, + lowest bit is upper bit of position>, <position - 1>
-- <128 + (length - 4)>, <position high>, <position low>
-- Position is where in the window it was found, minus 1.
-- windowSize must be the same between the encoder and decoder,
-- and is the amount of data preserved after cropping.
io.write("\x00") -- initiation character
local blockCache = {}
local window = 0
local blockUse = 128
for i = 128, 128 + blockUse - 1 do
blockCache[i] = ("\x00"):rep(512)
local blk = io.read("*a")
local windowSize = 0x10000
local windowData = ("\x00"):rep(windowSize)
local function crop(data)
windowData = (windowData .. data):sub(-windowSize)
end
local function runBlock(blk)
-- firstly, get current block index
local blockIndex = window + 128
window = (window + 1) % blockUse
blockCache[blockIndex] = ""
-- ok, now work on the problem
local i = 1
while i <= #blk do
local bestData = blk:sub(i, i)
local bestRes = bestData
local bestScore = 1
for bid = 128, 128 + blockUse - 1 do
for lm = 0, 127 do
local al = lm + 3
local pfx = blk:sub(i, i + al - 1)
if #pfx ~= al then
break
end
local p = blockCache[bid]:find(pfx, 1, true)
if not p then
break
end
local score = al / 3
if score > bestScore then
bestData = string.char(bid) .. string.char((lm * 2) + math.floor((p - 1) / 256)) .. string.char((p - 1) % 256)
bestRes = pfx
bestScore = score
end
end
while blk ~= "" do
local bestData = blk:sub(1, 1)
local bestRes = bestData
for lm = 0, 127 do
local al = lm + 4
local pfx = blk:sub(1, al)
if #pfx ~= al then
break
end
-- ok, encode!
io.write(bestData)
blockCache[blockIndex] = blockCache[blockIndex] .. bestRes
i = i + #bestRes
local p = windowData:find(pfx, 1, true)
if not p then
break
end
local pm = p - 1
bestData = string.char(128 + lm, math.floor(pm / 256), pm % 256)
bestRes = pfx
end
-- ok, encode!
io.write(bestData)
crop(bestRes)
blk = blk:sub(#bestRes + 1)
end
while 1 do
local blkd = io.read(512)
runBlock(blkd)
if #blkd < 512 then
return
end
end

1
bonecrunch.lua → com2/bonecrunch.lua
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@ -46,6 +46,7 @@ local sequences = {
{"=1 w", "=1w"},
{"=380 l", "=380l"},
{"=127 t", "=127t"},
{"<128 t", "<128t"},
{"=128 t", "=128t"},
{">255 t", ">255t"},
{"=512 t", "=512t"}

79
com2/bundiv.lua
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@ -1,19 +1,35 @@
-- This is released into the public domain. XX
-- No warranty is provided, implied or otherwise. XX
local sector = io.write -- XX
-- BUNDIVIDE reference implementation for integration XX
local Cs,Cbu,Cb,Cw,Cp,Ct,Ci,CP,CB,CD={},128,"",128,"",""
CP = function(d,b)
-- XX
-- BUNDIVIDE (r5 edition) reference implementation for integration XX
-- Lines ending with XX are not included in the output. XX
-- Lines that both start and end with -- are only for use in the output, XX
-- and are thus not executed during any sanity-check procedure. XX
-- XX
Cp,Ct,Cc,Cw="","","",("\x00"):rep(65536)
-- High-level breakdown: XX
-- CP is unescaper & TAR-sector-breakup. XX
-- It'll only begin to input if at least 3 bytes are available, XX
-- so you'll want to throw in 2 extra zeroes at the end of stream as done here. XX
-- It uses Ct (input buffer) and Cp (output buffer). XX
-- Ignore its second argument, as that's a lie, it's just there for a local. XX
-- CD is the actual decompressor. It has the same quirk as CP, wanting two more bytes. XX
-- It stores to Cc (compressed), and Cw (window). XX
-- It uses Ca as the "first null" activation flag. XX
-- It outputs that which goes to the window to CP also. XX
-- And it also uses a fake local. XX
CP = function (d, b)
Ct = Ct .. d
while#Ct>2 do
while #Ct > 2 do
b = Ct:byte()
Ct = Ct:sub(2)
if b == 127 then
b = Ct:byte()
Ct = Ct:sub(2)
if b == 127 then
b = Ct:byte()+254
if b > 255then
b = Ct:byte() + 254
if b > 255 then
b = b - 256
end
Ct = Ct:sub(2)
@ -21,53 +37,36 @@ CP = function(d,b)
b = b + 127
end
end
Cp = Cp..string.char(b)
Cp = Cp .. string.char(b)
if #Cp == 512 then
sector(Cp)
Cp = ""
end
end
end
for i = 128, 127 + Cbu do
Cs[i] = ("\x00"):rep(512)
end
Cs[Cw] = ""
CB = function (d, i, d2, x, y)
i=1
while i <= #d - 2 do
b=d:byte(i)
d2=d:sub(i,i)
i=i+1
if not Ci then
if b==0then
Ci=1
end
-- XX
CD = function (d, b, p)
Cc = Cc .. d
while #Cc > 2 do
b = Cc:byte()
if not Ca then
Ca, b, Cc = b < 1, "", Cc:sub(2)
elseif b < 128 then
b, Cc = Cc:sub(1, 1), Cc:sub(2)
else
if b >= 128 then
x = d:byte(i)
i = i + 1
y=d:byte(i) + ((x % 2) * 256)
i = i + 1
d2=Cs[b]:sub(y + 1,y + 3 + math.floor(x / 2))
end
Cs[Cw]=Cs[Cw]..d2
if #Cs[Cw]>=512 then
CP(Cs[Cw])
Cw=((Cw-127)%Cbu)+128
Cs[Cw]=""
end
p = Cc:byte(2) * 256 + Cc:byte(3) + 1
b, Cc = Cw:sub(p, p + b - 125), Cc:sub(4)
end
CP(b)
Cw = (Cw .. b):sub(-65536)
end
return i
end
CD = function(d)
Cb = Cb .. d
Cb = Cb:sub(CB(Cb))
end
-- XX
CD(io.read("*a")) -- XX
--D.remove("init-bdivide.lua")--
--D.rename("init.lua","init-bdivide.lua")--
--local Ch=D.open("init-bdivide.lua","rb")--
--dieCB=function()D.close(Ch)D.remove("init-bdivide.lua")end--
--while true do local t=D.read(Ch, 64)if not t then break end CD(t)end--
CD("\x00\x00")CP(Cs[Cw] .. "\x00\x00")
-- XX
CD("\x00\x00")CP("\x00\x00")

34
imitclaw.lua
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@ -1,34 +0,0 @@
-- This is released into the public domain.
-- No warranty is provided, implied or otherwise.
-- Imitation CLAW
local done = {}
local f, e = loadfile("code/data/app-claw/local.lua")
if not f then error(e) end
f = f()
if not os.execute("mkdir work") then
error("Delete 'work'")
end
for k, v in pairs(f) do
for _, vd in ipairs(v.dirs) do
os.execute("mkdir work/" .. vd .. " 2> /dev/null")
end
for _, vf in ipairs(v.files) do
-- not totally proofed but will do
if not os.execute("cp code/" .. vf .. " work/" .. vf) then
error("Could not copy " .. vf .. " in " .. k)
end
if done[vf] then
error("duplicate " .. vf .. " in " .. k)
end
print(vf .. "\t\t" .. k)
done[vf] = true
end
end
os.execute("mkdir -p work/data/app-claw")
os.execute("cp code/data/app-claw/local.lua work/data/app-claw/local.lua")
os.execute("cd code ; find . > ../imitclaw.treecode")
os.execute("cd work ; find . > ../imitclaw.treework")
os.execute("diff -u imitclaw.treecode imitclaw.treework")
os.execute("rm imitclaw.treecode imitclaw.treework")

140
laboratory/ocemu.cfg
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@ -1,140 +0,0 @@
--OCEmu configuration. Designed to mimic HOCON syntax, but is not exactly HOCON
--syntax.
ocemu {
--Client side settings, presentation and performance related stuff.
client {
--The sample rate used for generating beeps of computers' internal speakers.
--Use custom values at your own responsibility here; if it breaks OC you'll
--get no support. Some potentially reasonable lower values are 16000 or even
--8000 (which was the old default, but leads to artifacting on certain
--frequencies).
beepSampleRate=44100
--The base volume of beeps generated by computers. This may be in a range of
--[0, 127], where 0 means mute (the sound will not even be generated), and
--127 means maximum amplitude / volume.
beepVolume=32
--The color of monochrome text (i.e. displayed when in 1-bit color depth,
--e.g. tier one screens / GPUs, or higher tier set to 1-bit color depth).
--Defaults to white, feel free to make it some other color, tho!
monochromeColor="0xFFFFFF"
}
--Computer related settings, concerns server performance and security.
computer {
--The maximum size of the byte array that can be stored on EEPROMs as
--configuration data.
eepromDataSize=256
--The maximum size of the byte array that can be stored on EEPROMs as
--executable data..
eepromSize=4096
--Settings specific to the Lua architecture.
lua {
--Whether to allow loading precompiled bytecode via Lua's `load` function,
--or related functions (`loadfile`, `dofile`). Enable this only if you
--absolutely trust all users on your server and all Lua code you run. This
--can be a MASSIVE SECURITY RISK, since precompiled code can easily be
--used for exploits, running arbitrary code on the real server! I cannot
--stress this enough: only enable this is you know what you're doing.
allowBytecode=false
--Whether to allow user defined __gc callbacks, i.e. __gc callbacks
--defined *inside* the sandbox. Since garbage collection callbacks are not
--sandboxed (hooks are disabled while they run), this is not recommended.
allowGC=false
}
--The time in seconds a program may run without yielding before it is
--forcibly aborted. This is used to avoid stupidly written or malicious
--programs blocking other computers by locking down the executor threads.
--Note that changing this won't have any effect on computers that are
--already running - they'll have to be rebooted for this to take effect.
timeout=5
}
--Emulator related settings. Components, accuracy, and debugging.
emulator {
--Default components available to the computer.
components {
{"gpu", "c1-gpu-tier3", 0, 160, 50, 3},
{"gpu", "c1-gpu-tier1", 0, 50, 16, 1},
{"screen_sdl2", "c1-screen-tier3", -1, 160, 50, 3},
{"screen_sdl2", "c1-screen-tier1", -1, 50, 16, 1},
{"modem", "c1-modem", 1, false},
{"eeprom", "c1-eeprom", 9, "lua/bios.lua"},
{"filesystem", "c1-tmpfs", -1, "tmpfs", "tmpfs", false, 5},
{"filesystem", "c1-sda", 5, nil, "Workbench", false, 4},
{"filesystem", "c1-sdb", 5, nil, "Repository", false, 4},
{"filesystem", "openos", 0, "loot/openos", "openos", true, 1},
{"internet", "c1-internet", 2},
{"computer", "c1-computer", -1},
{"ocemu", "c1-ocemu", -1},
{"keyboard_sdl2", "c1-keyboard", -1}
}
--Whether to enable the emulator's extremely verbose logging.
debug=false
--Whether to choose performance over timing-accuracy.
fast=false
--Whether to return vague error messages like OpenComputers.
vague=false
}
filesystem {
--The maximum block size that can be read in one 'read' call on a file
--system. This is used to limit the amount of memory a call from a user
--program can cause to be allocated on the host side: when 'read' is, called
--a byte array with the specified size has to be allocated. So if this
--weren't limited, a Lua program could trigger massive memory allocations
--regardless of the amount of RAM installed in the computer it runs on. As a
--side effect this pretty much determines the read performance of file
--systems.
maxReadBuffer=2048
}
internet {
--Whether to allow HTTP requests via internet cards. When enabled, the
--`request` method on internet card components becomes available.
enableHttp=true
--Whether to allow TCP connections via internet cards. When enabled, the
--`connect` method on internet card components becomes available.
enableTcp=true
}
--Other settings that you might find useful to tweak.
misc {
--The maximum size of network packets to allow sending via network cards.
--This has *nothing to do* with real network traffic, it's just a limit for
--the network cards, mostly to reduce the chance of computer with a lot of
--RAM killing those with less by sending huge packets. This does not apply
--to HTTP traffic.
maxNetworkPacketSize=8192
--The maximum distance a wireless message can be sent. In other words, this
--is the maximum signal strength a wireless network card supports. This is
--used to limit the search range in which to check for modems, which may or
--may not lead to performance issues for ridiculous ranges - like, you know,
--more than the loaded area. See also: `wirelessCostPerRange`.
maxWirelessRange=400
}
--The configuration version this config was generated at. This is used to
--allow the emulator to reset/migrate parts of the config when their meaning
--has changed across versions.
version=3
}

11
laboratory/reset-i.sh Executable file
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@ -0,0 +1,11 @@
#!/bin/sh
# This is released into the public domain.
# No warranty is provided, implied or otherwise.
cp ocemu.cfg.default ocemu.cfg && rm -rf c1-sda c1-sdb tmpfs
mkdir c1-sda c1-sdb
echo -n c1-sda > c1-eeprom/data.bin
cd ..
./package.sh
cp inst.lua laboratory/c1-sda/init.lua

2
package.sh
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@ -7,7 +7,7 @@ rm code.tar
# Hey, look behind you, there's nothing to see here.
# ... ok, are they seriously all named "Mann"?
tar --owner=gray:0 --group=mann:0 -cf code.tar code
lua heroes.lua `wc -c code.tar` | lua bonecrunch.lua > inst.lua
lua heroes.lua `wc -c code.tar` | lua com2/bonecrunch.lua > inst.lua
echo -n "--[[" >> inst.lua
cat com2/code.tar.bd >> inst.lua
echo -n "]]" >> inst.lua