find, filter, skeletons

.buildactions/00_init.lua

@@ -0,0 +1,6 @@
+function actions.init()
+	os.execute("mkdir -p target")
+	os.execute("luacomp module/bootloader.lua -O target/init.lua")
+end
+
+actions[#actions+1] = "init"

.buildactions/10_zlua.lua

@@ -0,0 +1,19 @@
+local function makezlua(file)
+	local path = file:match("^(.+)/.+%..+$")
+	os.execute("mkdir -p target/"..path)
+	os.execute("cat "..file.." | luamin -c | lua zlua.lua > target/"..file)
+end
+
+function actions.files()
+	local libs = find("lib", "*.lua")
+	local svcs = find("service", "*.lua")
+	for i=1, #libs do
+		makezlua(libs[i])
+	end
+
+	for i=1, #svcs do
+		makezlua(svcs[i])
+	end
+end
+
+actions[#actions+1] = "files"

.buildactions/90_package.lua

@@ -0,0 +1,6 @@
+function actions.package()
+	os.execute("cp -r cfg target")
+	os.execute("cd target; find $".."(ls) -depth | tsar -o > ../psychos.tsar")
+end
+
+actions[#actions+1] = "package"

INSTALL.md

@@ -1,82 +0,0 @@
-# Installing PsychOS
-
-## From OpenOS
-### Requirements
-In general:
-- oppm
-- mtar
-
-For installing to an unmanaged drive or tape
-- slicer
-- partman
-- rtfs
-- boopu
-
-There are two easy methods to get these packages.
-1. With oppm, if available, you can run `oppm install mtar partman rtfs boopu`.
-2. You can use the `obootstrap.lua` script to set up a temporary environment for installing PsychOS. This can even be used from the OpenOS installer disk.  
-```
-# wget https://git.shadowkat.net/izaya/OC-PsychOS2/raw/branch/master/obootstrap.lua /tmp/obootstrap.lua
-# /tmp/obootstrap.lua
-```
-
-### Preparing the target disk
-#### Managed filesystem
-Preparing a managed filesystem is extremely simple: attach it to your computer, and make sure there's nothing that you want to keep in the following locations on the filesystem:
-- init.lua
-- lib/
-- service/
-- doc/
-- pkg/
-- cfg/
-
-#### Unmanaged drive or tape
-##### Creating partitions
-First, you'll need to find out how many sectors your target device has. `slicer <addr> show` will show you something like this:
-
-```
-# slicer 9f7 show
-Drive 9f755736 - 1024KiB, 2048 sectors:
- #  Name                 Type Start   Len   End
-```
-
-The usable space on the disk is going to be two sectors less than the total size - sectors 2 through 2047, in this case, as you will want to leave space for the OSDI partition table at the start, and the MTPT partition table at the end.
-
-First, we'll create the boot partition. 64KiB is the recommended size, though 48KiB may be enough. OC disks use 512 byte sectors, so that will work out to 128 sectors.
-
-```
-# slicer 9f7 add init.lua boot 2 128
-Drive 9f755736 - 1024KiB, 2048 sectors:
- #  Name                 Type Start   Len   End
- 1: 9f755736             mtpt     0     0    -1
- 2: init.lua             boot     2   128   129
-```
-
-Next, we need to create an rtfs partition, for the boot filesystem. This can use the rest of the space on the disk, but should be named `<first 8 characters of computer address>-boot`.
-
-```
-# slicer 9f7 add ffa5c282-boot rtfs 130 1918
-Drive 9f755736 - 1024KiB, 2048 sectors:
- #  Name                 Type Start   Len   End
- 1: 9f755736             mtpt     0     0    -1
- 2: init.lua             boot     2   128   129
- 3: ffa5c282-boot        rtfs   130  1918  2047
-```
-
-Once you're all done, you can restart partman and it should recognise the new partitions.
-
-```
-# rc partman restart
-# components part
-partition       9f755736-a739-4f45-8c5c-35a66a7f5dbe/2
-```
-
-##### Formatting the filesystem
-Next, we'll use the mkfs.rtfs utility to format the filesystem partition we just created. Do note that the order of components is not fixed, so using a shortened version can result in unreliable behavior, like, for example, formatting the boot partition.
-
-```
-# mkfs.rtfs 9f755736-a739-4f45-8c5c-35a66a7f5dbe/2 ffa5c282-boot
-9f755736-a739-4f45-8c5c-35a66a7f5dbe/2
-```
-
-To make OpenOS mount the filesystem, the simplest way is to restart partman again, as described in the previous section.

README.md

@@ -6,31 +6,23 @@ A lightweight, multi-user operating system for OpenComputers
 
 ### The kernel
 
-The kernel is composed of a number of modules, found in the *module/* directory, as specified by a file in the *kcfg* directory, `base` by default. Which modules are included can be customised by changing the include statements in the kernel configuration file; copying it and customizing that is recommended, so you can *git pull* later without having to stash or reset your changes.
+The kernel can be built using luapreproc:
 
-#### Unix-like systems
+    ./luapreproc.lua module/init.lua kernel.lua
-
-The kernel can be built using the preproc library and provided scripts:
-
-    lua build.lua kcfg/base.cfg kernel.lua
-
-#### PsychOS
-
-The kernel can be built from inside PsychOS using the preproc library, assuming you have the kernel source available:
-
-    preproc("kcfg/base.cfg","kernel.lua")
 
 ### The boot filesystem
 
 A boot filesystem contains several things:
 
  - The kernel, as init.lua
+ - The exec/ directory, as this contains all executables
  - The lib/ directory, containing libraries
  - The service/ directory, containing system services
- - The exec/ directory, containing single-shot executable files
 
 This has been automated in the form of build.sh, pending a real makefile.
 
 ## Documentation
 
-Documentation is generated as the system is built with build.sh; a set of markdown files will be placed into *doc/*, as well as an all-in-one *apidoc.md*. If pandoc is installed, an *apidoc.pdf* will also be generated.
+To generate function documentation, run:
+
+    ./finddesc.lua module/* lib/* > apidoc.md

build.lua

@@ -1,4 +0,0 @@
-local preproc = require "preproc"
-
-preproc.minify = true
-preproc(...)

build.sh

@@ -1,15 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
-LUA=${LUA:-lua}
+luacomp luabuild.lua 2>/dev/null | lua - $@
-KVAR=${1:-base}
-rm -r target/*
-mkdir -p target/doc &>/dev/null
-$LUA build.lua kcfg/$KVAR.cfg target/init.lua
-echo _OSVERSION=\"PsychOS 2.0a3-$(git rev-parse --short HEAD)-$KVAR\" > target/version.lua
-cat target/version.lua target/init.lua > target/tinit.lua
-mv target/tinit.lua target/init.lua
-cp -r service/ lib/ cfg/ exec/ target/
-rm target/version.lua
-rm -r doc/ &>/dev/null
-$LUA finddesc.lua doc/ $(find lib/ module/ -type f|sort)
-$LUA gendoc.lua target/doc/kernel.dict $(find module/ -type f|sort)
-pandoc doc/apidoc.md docs-metadata.yml --template=template.tex -o doc/apidoc.pdf

build.sh.old

@@ -0,0 +1,14 @@
+#!/bin/bash
+LUA=${LUA:-lua}
+rm -r target/*
+mkdir -p target/doc &>/dev/null
+$LUA luapreproc.lua module/init.lua target/init.lua
+echo _OSVERSION=\"PsychOS 2.0a2-$(git rev-parse --short HEAD)\" > target/version.lua
+cat target/version.lua target/init.lua > target/tinit.lua
+mv target/tinit.lua target/init.lua
+cp -r service/ lib/ cfg/ target/
+rm target/version.lua
+rm -r doc/ &>/dev/null
+$LUA finddesc.lua doc/ $(find lib/ module/ -type f|sort)
+$LUA gendoc.lua target/doc/kernel.dict $(find module/ -type f|sort)
+pandoc doc/apidoc.md docs-metadata.yml --template=template.tex -o doc/apidoc.pdf

cfg/rc.cfg

@@ -0,0 +1 @@
+{enabled={"getty","minitel","clipboard","fsmanager"}}

escape.lua

@@ -0,0 +1,22 @@
+local function mkstr(d)
+	local dat = "\""
+	for i=1, #d do
+		if (d:sub(i,i) == "\\") then
+			dat = dat .. ("\\\\")
+		elseif (d:sub(i,i) == "\"") then
+			dat = dat .. ("\\\"")
+		elseif (d:sub(i,i) == "\n") then
+			dat = dat .. ("\\n")
+		elseif (d:sub(i,i) == "\r") then
+			dat = dat .. ("\\r")
+		elseif (d:sub(i,i) == "\t") then
+			dat = dat .. ("\\t")
+		else
+			dat = dat .. (d:sub(i,i))
+		end
+	end
+	dat = dat .. ("\"")
+	return dat
+end
+
+io.stdout:write(mkstr(io.stdin:read("*a")))

kcfg/base.cfg

@@ -1,2 +0,0 @@
---#include "module/base.lua"
---#include "module/init.lua"

kcfg/full.cfg

@@ -1,3 +0,0 @@
---#include "module/base.lua"
---#include "module/rtfsboot.lua"
---#include "module/init.lua"

lib/doc.lua

@@ -1,154 +0,0 @@
-local _,serial = pcall(require,"serialization")
-local doc = {}
-doc.searchers = {}
-doc.tctab = {
- ["string"] = 31,
- ["table"] = 32,
- ["userdata"] = 32,
- ["number"] = 33,
- ["boolean"] = 35,
- ["function"] = 36
-}
-
-function doc.parsefile(path) -- string -- table -- parses file from *path* to return a documentation table
- local fdoc = {}
- local f = io.open(path)
- local lines = {}
- for l in f:read("*a"):gmatch("[^\n]+") do
-  if l:find("function") and not l:find("local") then
-   lines[#lines+1] = l
-  end
- end
- for k,v in pairs(lines) do
-  local name, args, desc = v:match("function%s+(.+)%s*%((.*)%)%s*%-%-%s*(.+)")
-  if name and args and desc then
-   local fd = {["description"]=desc or desc,["args"]={},["atypes"]={}}
-   for word in args:gmatch("[^%s,]+") do
-    fd.args[#fd.args+1] = {word}
-    fd.atypes[word] = "unknown"
-   end
-   local argtypes, outtypes, description = desc:match("(.-)%-%-(.-)%-%-%s*(.+)")
-   if argtypes and outtypes and description then
-    local wc = 1
-    for word in argtypes:gmatch("%S+") do
-     fd.args[wc][2] = word
-     fd.atypes[fd.args[wc][1]] = word
-     wc = wc + 1
-    end
-    local wc = 1
-    for word in outtypes:gmatch("%S+") do
-     fd.outtypes = fd.outtypes or {}
-     fd.outtypes[#fd.outtypes+1] = word
-    end
-    fd.description = description
-   end
-   fdoc[name] = fd
-  end
- end
- return fdoc
-end
-
-function doc.format(fdoc) -- table -- string -- returns VT100 formatted documentation from documentation table *fdoc*
- local rs = "" -- string to return
- for fname,finfo in pairs(fdoc) do
-  if rs:len() > 0 then rs = rs .. "\n\n" end
-  local as = "" -- string containing arguments for a given function, with colours for type
-  for k,v in ipairs(finfo.args) do
-   local c = doc.tctab[v[2]] or 0
-   if k > 1 then
-    as = as .. ", "
-   end
-   if v[2] then
-    as = string.format("%s%s: \27[%im%s\27[0m",as,v[2],c,v[1])
-   else
-    as = string.format("%s\27[%im%s\27[0m",as,c,v[1])
-   end
-  end
-  local rv = ""
-  if finfo.outtypes then
-   rv = ": "
-   for k,v in ipairs(finfo.outtypes) do
-    if k > 1 then
-     rv = rv .. ", "
-    end
-    local c = doc.tctab[v] or 0
-    rv = string.format("%s\27[%im%s\27[0m",rv,c,v)
-   end
-  end
-  local nd = finfo.description
-  for k,v in pairs(finfo.atypes) do
-   local c = doc.tctab[v] or 7
-   nd=nd:gsub("%*"..k.."%*","\27["..tostring(c).."m"..k.."\27[0m")
-  end
-  rs = string.format("%s\27[36m%s\27[0m(%s)%s\n%s",rs,fname,as,rv,nd)
- end
- return rs
-end
-
-function doc.searchers.lib(name) -- string -- string string -- Tries to find a documentation from a library with *name*. Returns either a string of documentation, or false and a reason.
- local lib = os.getenv("LIB") or "/boot/lib"
- local dt
- for d in lib:gmatch("[^\n]+") do
-  if fs.exists(d.."/"..name) then
-   dt = doc.parsefile(d.."/"..name)
-  elseif fs.exists(d.."/"..name..".lua") then
-   dt = doc.parsefile(d.."/"..name..".lua")
-  end
- end
- if not dt then return false, "unable to find documentation for "..tostring(name) end
- return doc.format(dt)
-end
-function doc.searchers.cdoc(topic) -- string -- string string -- Searches for documentation labelled as *topic* in .dict files under /boot/doc/
- if not serial then return end
- for k,v in ipairs(fs.list("/boot/doc")) do
-  if v:sub(-5) == ".dict" then
-   local f=io.open("/boot/doc/"..v,"rb")
-   for line in f:lines() do
-    local mname, docs = line:match("^(.-)\t(.+)$")
-    if mname == topic or mname == topic..".lua" then
-     return doc.format(serial.unserialize(docs))
-    end
-   end
-  end
- end
-end
-function doc.searchers.component(name)
- local dt = {}
- local addr = component.list(name)()
- if addr then
-  for fname,_ in pairs(component.methods(addr)) do
-   fd = {args={},outtypes={},atypes={}}
-   local ds = component.doc(addr,fname)
-   local ins, outs, desc = ds:match("%((.-)%)") or "", ds:match("%):(.*)%-%-") or "", ds:match("%-%-(.+)") or ""
-   for arg in ins:gmatch("[^,%s%[%]]+") do
-    local an,at = arg:match("(.-):(.+)")
-    at = at:match("(.-)=") or at
-    fd.args[#fd.args+1] = {an,at}
-    fd.atypes[an] = at
-   end
-   for out in outs:gmatch("[^,]+") do
-    fd.outtypes[#fd.outtypes+1] = out:match("^%s*(.-)%s*$")
-   end
-   fd.description = desc or ""
-   dt[name.."."..fname] = fd
-  end
- else
-  return
- end
- return doc.format(dt)
-end
-
-function doc.docs(topic) -- string -- boolean -- Displays the documentation for *topic*, returning true, or errors. Also callable as just doc().
- local lib = os.getenv("LIB") or "/boot/lib"
- local dt
- for k,v in pairs(doc.searchers) do
-  dt=v(topic)
-  if dt then
-   print(dt)
-   return true
-  end
- end
- error("unable to find documentation for "..tostring(name))
-end
-
-return setmetatable(doc,{__call=function(_,topic) return doc.docs(topic) end})

lib/download.lua

@@ -1,133 +0,0 @@
-local net = require "minitel"
-local dl = {}
-dl.protos = {}
-
--- Stolen from the old exec/fget
-local function parseURL(url)
- local proto,addr = url:match("(.-)://(.+)")
- addr = addr or url
- local hp, path = addr:match("(.-)(/.*)")
- hp, path = hp or addr, path or "/"
- local host, port = hp:match("(.+):(.+)")
- host = host or hp
- return proto, host, port, path
-end
-
-function dl.protos.fget(host, optPort, path, dest) -- string string string number -- boolean -- Downloads path from host (on optPort or 70), printing the directory listing, or saving the file to dest.
- local socket = assert(net.open(host, optPort or 70))
- socket:write(string.format("t%s\n", path))
- local status
- repeat
-  coroutine.yield()
-  status = socket:read(1)
- until status ~= ""
-
- if status == "d" then
-  io.write("Directory Listing:\n")
-  local tmp = ""
-  repeat
-   coroutine.yield()
-   tmp = socket:read("*a")
-   
-   io.write(tmp)
-  until socket.state == "closed" and tmp == ""
-
-  return true
- elseif status == "y" then
-  if not dest then
-   error("Must provide local path to save remote files.")
-  end
-  
-  io.write(string.format("Saving %s to %s...\n", path, dest))
-  local f = assert(io.open(dest, "wb"))
-  local tmp = ""
-  repeat
-   coroutine.yield()
-   tmp = socket:read("*a")
-   
-   f:write(tmp)
-  until socket.state == "closed" and tmp == ""
-
-  f:close()
-  print("Done.")
-  
-  return true
- else
-  local err, tmp = "", ""
-  repeat
-   coroutine.yield()
-   tmp = socket:read("*a")
-
-   err = err .. tmp
-  until socket.state == "closed" and tmp == ""
-  
-  error(string.format("Got error from remote host: %s", err))
- end
-end
-
-function dl.protos.http(host, optPort, path, dest, url) -- string string string number -- boolean -- Downloads *url* to *dest* via the internet card, if available.
- if not component.list("internet")() then
-  local proto,host,sPort,path = parseURL(url)
-  local proxy = os.getenv(proto:upper().."_PROXY")
-  if not proxy and fs.exists("/boot/cfg/"..proto.."_proxy") then
-   local f = io.open("/boot/cfg/"..proto.."_proxy","rb")
-   proxy = f:read()
-   f:close()
-  end
-  if not proxy then error("No internet card or HTTP(S) proxy available") end
-  print("Internet card unavailable, falling back to proxy "..proxy)
-  if optPort then host=string.format("%s:%i",host,optPort) end
-  return dl.wget(string.format("%s/%s%s",proxy,host,path),dest)
- end
- if not dest then
-  error("Must provide local path to save remote files.")
- end
- local R,r=component.invoke(component.list("internet")(),"request",url)
- if not R then error(r) end
- repeat
-  ok, err = R.finishConnect()
-  if type(ok) ~= "boolean" then
-   if err == url then
-    return 404, "This is a bug in OC, I think?"
-   end
-   return -1, err or "Connection Error"
-  end
-  coroutine.yield()
- until ok
- local code, messsage, headers
- repeat
-  coroutine.yield()
-  code, message, headers = R.response()
- until code or message
- if code > 299 or code < 200 then
-  return false, code, message
- end
- local f=io.open(dest,"wb")
- if not f then error("Unable to open file "..dest) end
- io.write(string.format("Saving %s to %s...\n", url, dest))
- repeat
-  coroutine.yield()
-  ns = R.read()
-  f:write(ns or "")
- until not ns
- f:close()
- print("Done.")
- return true
-end
-dl.protos.https = dl.protos.http
-
-function dl.wget(remotePath, dest) -- string string -- -- Downloads from remote *remotePath* to *dest*
- local proto, host, sPort, path = parseURL(remotePath)
- if dl.protos[proto] then
-  local port
-  if sPort then
-   port = tonumber(sPort)
-  end
-  
-  dl.protos[proto](host, port, path, dest, remotePath)
- else
-  error("Unsupported protocol: " .. tostring(proto))
- end
-end
-
-return setmetatable(dl,{__call=function(_,path,dest) return dl.wget(path,dest) end})

lib/ed.lua

@@ -17,7 +17,7 @@ end
 function ed.bfunc:save(fpath)
  local path = fpath or self.path
  if not path then return false, "no path" end
-  self.path = path
+	self.path = path
  local f = io.open(path,"wb")
  if not f then return false, "unable to open file" end
  for k,v in ipairs(self) do
@@ -112,7 +112,6 @@ function ed.newBuffer()
 end 
 
 function ed.open(buffer)
- local bpath = buffer
  if ed.buffers[buffer] then
   buffer = ed.buffers[buffer]
  end
@@ -121,9 +120,7 @@ function ed.open(buffer)
   nb:load(buffer)
   buffer = nb
  end
- if type(buffer) ~= "table" then buffer = ed.newBuffer() end
+ if type(buffer) ~= "table" then buffer = ed.newBuffer() buffer[1] = "" end
- buffer[1] = buffer[1] or "" 
- buffer.path = buffer.path or "/"..((bpath:sub(1,1) == "/" and table.concat(fs.segments(path),"/")) or table.concat(fs.segments(os.getenv("PWD").."/"..bpath),"/"))
  return buffer
 end
 
@@ -163,10 +160,10 @@ function ed.visual(buffer)
   if cx ~= ox or cy ~= oy or force then
    io.write("\27[2J\27[H")
    for i = cy, cy+my do
-    io.write(string.format("\27[1;%iH\27[31m%4i \27[0m%s",(i-cy+1),i,(buffer[i] or "\27[36m~"):sub(cx,cx+mx-6)))
+    print(string.format("\27[31m%4i \27[0m%s",i,(buffer[i] or "\27[36m~"):sub(cx,cx+mx-6)))
    end
   elseif mode == "i" then
-   io.write(string.format("\27[2K\27[999D\27[31m%4i \27[0m%s",buffer.y,(buffer[buffer.y] or "\27[36m~"):sub(cx,cx+mx-6)))
+   print(string.format("\27[2K\27[999D\27[31m%4i \27[0m%s",buffer.y,(buffer[buffer.y] or "\27[36m~"):sub(cx,cx+mx-6)))
   end
   io.write(string.format("\27[1;%iH\27[0;36;%im\27[2K[%s] ced visual: %i,%i/%i, %iK free %i",my+2,(mode == "c" and 7) or 0, mode, buffer.x, buffer.y, #buffer, computer.freeMemory()//1024,mult))
   io.write(string.format("\27[%i;%iH\27[0m",buffer.x+6-cx,buffer.y-cy+1))

lib/liblz16.lua

@@ -1,53 +0,0 @@
-local lz = require "lzss"
-local buffer = require "buffer"
-
-lz16 = {}
-
-local function readBuffer(fi)
- local stream = {}
- if fi:read(4) ~= "lz16" then
-  return false, "not an lz16 archive"
- end
- function stream.read()
-  local len = string.unpack(">I2", fi:read(2) or "\0\0")
-  if len < 1 then
-   return nil
-  end
-  if os.sleep then os.sleep(0) else coroutine.yield() end
-  return lz.decompress(fi:read(len))
- end
- function stream.close()
-  fi:close()
- end
- return buffer.new("rb",stream)
-end
-
-local function writeBuffer(fo)
- local stream = {}
- function stream:write(data)
-  local cblock = lz.compress(data)
-  fo:write(string.pack(">I2", cblock:len()) .. cblock)
-  return cblock:len()+2
- end
- function stream.close()
-  fo:close()
- end
- fo:write("lz16") -- write header
- return buffer.new("wb",stream)
-end
-
-function lz16.buffer(stream) -- table -- table -- Wrap a stream to read or write LZ16.
- if stream.mode.w then
-  return writeBuffer(stream)
- end
- return readBuffer(stream)
-end
-
-function lz16.open(fname, mode) -- string string -- table -- Open file *fname* to read or write LZ16-compressed data depending on *mode*
- local f = io.open(fname, mode)
- if not f then return false end
- f.mode.b = true
- return lz16.buffer(f)
-end
-
-return lz16

lib/libmtar.lua

@@ -1,49 +0,0 @@
-local mtar = {}
-local versions = {}
-versions[0] = {nlf = ">I2", flf = ">I2"} -- original version format
-versions[1] = {nlf = ">I2", flf = ">I8"} -- extended file size format
-mtar.versions = versions
-
-local function cleanPath(path)
- local pt = {}
- for segment in path:gmatch("[^/]+") do
-  if segment == ".." then
-   pt[#pt] = nil
-  elseif segment ~= "." then
-   pt[#pt+1] = segment
-  end
- end
- return table.concat(pt,"/")
-end
-
-function mtar.genHeader(fname,len,version) -- string number -- string -- generate a header for file *fname* when provided with file length *len*
- version=version or 1
- return string.format("\255\255%s%s%s%s", string.char(version), string.pack(versions[version].nlf,fname:len()), fname, string.pack(versions[version].flf,len))
-end
-
-function mtar.iter(stream) -- table -- function -- Given buffer *stream*, returns an iterator suitable for use with *for* that returns, for each iteration, the file name, a function to read from the file, and the length of the file.
- local remain = 0
- local function read(n)
-  local rb = stream:read(math.min(n,remain)) or ""
-  remain = remain - rb:len()
-  return rb
- end
- return function()
-  while remain > 0 do
-   remain=remain-(#stream:read(math.min(remain,2048)) or "")
-  end
-  local version = 0
-  local nlen = string.unpack(">I2", stream:read(2) or "\0\0")
-  if nlen == 0 then
-   return
-  elseif nlen == 65535 then -- versioned header
-   version = string.byte(stream:read(1))
-   nlen = string.unpack(versions[version].nlf, stream:read(string.packsize(versions[version].nlf)))
-  end
-  local name = cleanPath(stream:read(nlen))
-  remain = string.unpack(versions[version].flf, stream:read(string.packsize(versions[version].flf)))
-  return name, read, remain
- end
-end
-
-return mtar

lib/netutil.lua

@@ -1,11 +1,12 @@
 local computer = require "computer"
 local minitel = require "minitel"
 local event = require "event"
+local ufs = require "unionfs"
 local rpc = require "rpc"
 local netutil = {}
 
 function netutil.importfs(host,rpath,lpath) -- string string string -- boolean -- Import filesystem *rpath* from *host* and attach it to *lpath*.
- local px = rpc.proxy(host,"fs_"..rpath.."_")
+ local px = rpc.proxy(host,rpath.."_")
  function px.getLabel()
   return host..":"..rpath
  end
@@ -15,18 +16,10 @@ end
 
 function netutil.exportfs(path) -- string -- boolean -- Export the directory *path* over RPC.
  local path = "/"..table.concat(fs.segments(path),"/")
- local px = require("unionfs").create(path)
+ local px = ufs.create(path)
- function px.dirstat(p)
-  local rt = {}
-  for k,v in ipairs(px.list(p)) do
-   local fp = p.."/"..v
-   rt[v] = {px.isDirectory(fp), px.size(fp), px.lastModified(fp)}
-  end
-  return rt
- end
  for k,v in pairs(px) do
-  rpc.register("fs_"..path.."_"..k,v)
+  rpc.register(path.."_"..k,v)
-  print("fs_"..path.."_"..k)
+  print(path.."_"..k)
  end
  return true
 end

lib/pkgfs.lua

@@ -1,146 +0,0 @@
-local mtar = require "libmtar"
-local w, lz16 = pcall(require, "liblz16")
-if not w then lz16 = nil end
-
-pkgfs = {}
-pkgfs.files = {}
-local findex = {}
-local handles = {}
-local hc = 0
-
-local function rfalse()
- return false
-end
-local function rzero()
- return 0
-end
-
-pkgfs.component = {seek = rfalse, makeDirectory = rfalse, write = rfalse, rename = rfalse, setlabel = rfalse, spaceUsed = rzero, spaceTotal = rzero, lastModified = rzero, address = "pkgfs"}
-
-local function fopen(path,comp)
- local f
- if comp and lz16 then
-  f = lz16.open(path,"rb")
- else
-  f = io.open(path,"rb")
- end
- return f
-end
-
-local function fnormalize(s)
- return table.concat(fs.segments(s),"/")
-end
-
-function pkgfs.component.exists(path)
- path = fnormalize(path)
- return findex[path] and true
-end
-
-function pkgfs.component.list(path)
- path = fnormalize(path).."/"
- local ft,rt = {},{}
- for k,v in pairs(findex) do
-  k="/"..k
-  if k:match(path.."([^/]+)/.+") then
-   ft[k:match(path.."([^/]+)/.+").."/"] = true
-  elseif k:match(path.."([^/]+)") then
-   ft[k:match(path.."([^/]+)")] = true
-  end
- end
- for k,v in pairs(ft) do
-  rt[#rt+1] = k
- end
- return rt
-end
-function pkgfs.component.isDirectory(path)
- path = fnormalize(path).."/"
- for k,v in pairs(findex) do
-  k="/"..k
-  if k:match(path.."([^/]+)/.+") then
-   return true
-  end
- end
- return false
-end
-function pkgfs.component.size(path)
- path=fnormalize(path)
- if not findex[path] then return false end
- local f = fopen(findex[path][1], findex[path][2])
- for fname, read, fsize in mtar.iter(f) do
-  if fname == path then
-   return fsize
-  end
- end
- return false
-end
-
-function pkgfs.component.open(path,mode)
- path=fnormalize(path)
- if mode:find("w") or mode:find("a") or not findex[path] then
-  return false
- end
- local f = fopen(findex[path][1],findex[path][2])
- for fname,read,fsize in mtar.iter(f) do
-  if fname == path then
-   hc = hc + 1
-   handles[hc] = {read, f}
-   return hc
-  end
- end
-end
-
-function pkgfs.component.read(handle, n)
- if not handles[handle] then return false end
- local rv = handles[handle][1](n)
- if not rv then return nil end
- if rv:len() < 1 then return nil end
- return rv
-end
-
-function pkgfs.component.close(handle)
- if not handles[handle] then return false end
- handles[handle][2]:close()
- handles[handle] = nil
- return true
-end
-
-local function index()
- findex = {}
- for k,v in pairs(pkgfs.files) do
-  fname, comp = v[1], v[2]
-  if fname:sub(1,1) ~= "/" then
-   fname = "/"..fnormalize(os.getenv("PWD").."/"..fname)
-  end
-  local f = fopen(fname,comp)
-  if not f then error("unable to open file "..fname) end
-  for name, read, fsize in mtar.iter(f) do
-   findex[fnormalize(name)] = {fname,comp}
-  end
-  f:close()
- end
- return true
-end
-
-function pkgfs.add(fname,comp) -- string boolean -- boolean -- Add a package as specified in *fname* to the pkgfs component. If *comp* is true, read it as a LZ16-compressed package.
- pkgfs.files[#pkgfs.files+1] = {fname,comp}
- return index()
-end
-function pkgfs.remove(fname) -- string -- boolean -- Removes the package specified by *fname* from the pkgfs index.
- for k,v in pairs(pkgfs.files) do
-  if v[1] == fname then
-   table.remove(pkgfs.files,k)
-  end
- end
- return index()
-end
-
-fs.makeDirectory("/pkg")
-fs.mount("/pkg",pkgfs.component)
-for _,file in ipairs(fs.list("/boot/pkg/")) do
- if file:sub(-5) == ".mtar" then
-  pcall(pkgfs.add,"/boot/pkg/"..file)
- elseif file:sub(-9) == ".mtar.lss" then
-  pcall(pkgfs.add,"/boot/pkg/"..file,true)
- end
-end
-return pkgfs

lib/pkgman.lua

@@ -1,193 +0,0 @@
-local serial = require "serialization"
-local dl = require "download"
-local mtar = require "libmtar"
-local pkg = {}
-pkg.cfgPath = "/boot/cfg/pkg"
-pkg.sourcePath = pkg.cfgPath .. "/sources.cfg"
-pkg.installedPath = pkg.cfgPath .. "/installed.cfg"
-local w, lz16 = pcall(require,"liblz16")
-if not w then lz16 = nil end
-fs.makeDirectory("/boot/pkg")
-fs.makeDirectory("/boot/cfg/pkg")
-require "pkgfs"
-local kver,kvar = _OSVERSION:match("(%x+)%-([^-]-)$")
-kver,kvar = kver or "unknown", kvar or "base"
-
-local function getSources()
- local f = io.open(pkg.sourcePath,"rb")
- if not f then return {main={path="https://oc.shadowkat.net/psychos/pkg",cache=true,name="main"}} end
- local c = f:read("*a")
- f:close()
- return serial.unserialize(c)
-end
-local function saveSources(t)
- fs.makeDirectory(pkg.cfgPath)
- local f = io.open(pkg.sourcePath,"wb")
- f:write(serial.serialize(t))
- f:close()
-end
-
-local function getInstalled()
- local f = io.open(pkg.installedPath,"rb")
- if not f then return {psychos={version=kver},["kernel-"..kvar]={version=kver}} end
- local c = f:read("*a")
- f:close()
- return serial.unserialize(c)
-end
-local function saveInstalled(t)
- fs.makeDirectory(pkg.cfgPath)
- local f = io.open(pkg.installedPath,"wb")
- if not f then return false end
- f:write(serial.serialize(t))
- f:close()
-end
-
-local function getRepoMeta(repo)
- if not getSources()[repo].cache or not fs.exists("/boot/cfg/pkg/repo-"..repo..".cfg") then
-  dl(getSources()[repo].path.."/packages.cfg","/boot/cfg/pkg/repo-"..repo..".cfg")
- end
- local f = io.open("/boot/cfg/pkg/repo-"..repo..".cfg","rb")
- local rt = serial.unserialize(f:read("*a"))
- f:close()
- if not getSources()[repo].cache then
-  fs.remove("/boot/cfg/pkg/repo-"..repo..".cfg")
- end
- return rt
-end
-
-local function activatePackage(path,compressed)
- require("pkgfs").add(path,compressed)
-end
-local function deactivatePackage(path)
- require("pkgfs").remove(path)
-end
-local function fnormalize(s)
- return table.concat(fs.segments(s),"/")
-end
-local function installSystemPackage(path,comp)
- local f
- if comp and lz16 then
-  f = lz16.open(path,"rb")
- else
-  f = io.open(path,"rb")
- end
- for fname, read, size in mtar.iter(f) do
-  local opath = "/boot/"..fnormalize(fname)
-  print(opath..": "..tostring(size))
-  fs.makeDirectory(opath:match("(.+)/[^/]+"))
-  local of = io.open(opath,"wb")
-  if not of then error("unable to open "..opath.." for writing") end
-  local tmp
-  repeat
-   tmp = read(2048) or ""
-   of:write(tmp)
-  until not tmp or tmp:len() < 1
-  of:close()
- end
- return true
-end
-
-function pkg.addRepo(name,path,cache) -- string string boolean -- boolean -- Adds a repository, referred to as *name*, to the list of package sources, with the remote path *path*. If *cache* is set, keep a local copy of the repository index.
- local sources = getSources()
- sources[name] = {path=path,cache=cache,name=name}
- saveSources(sources)
-end
-
-function pkg.delRepo(name) -- string -- boolean -- Removes a repository from the list of repositories.
- local sources = getSources()
- sources[name] = nil
- saveSources(sources)
-end
-
-function pkg.update() -- Re-download cached repository indexes.
- for repo,meta in pairs(getSources()) do
-  fs.remove("/boot/cfg/pkg/repo-"..repo..".cfg")
-  if meta.cache then
-   getRepoMeta(repo)
-  end
- end
-end
-
-function pkg.list(filter,installed) -- string boolean -- -- Print a list of available packages matching *filter*, optionally filtering to only installed packages if *installed* is set.
- filter = filter or ""
- local pkglist = {}
- for repo,_ in pairs(getSources()) do
-  for pkg,meta in pairs(getRepoMeta(repo)) do
-   if pkg:find(filter) or (pkg.meta or ""):find(filter) then
-    meta.repo = repo
-    pkglist[pkg] = meta
-   end
-  end
- end
- for k,v in pairs(pkglist) do
-  if v.system then io.write("\27[31m") end
-  print(string.format("%s/%s: %s\27[0m\n %s\n Authors: %s",v.repo,k,v.name,v.description,v.authors))
- end
-end
-
-function pkg.getMeta(pkgname) -- string -- table -- Returns the metadata for a the package specified in *pkgname*.
- print("Finding package "..pkgname)
- for repo,info in pairs(getSources()) do
-  local pkg = getRepoMeta(repo)[pkgname]
-  if pkg then
-   print("Package "..pkgname.." located in repo "..repo.." at "..info.path)
-   pkg.repository = info
-   return pkg
-  end
- end
-end
-
-function pkg.get(pkgname,auto) -- string boolean -- boolean -- Downloads and mounts a package, identified as *pkgname,* onto the pkgfs. Setting *auto* will flag the package as automatically installed; this is used for dependencies.
- local pkginfo = pkg.getMeta(pkgname)
- if not pkginfo then error("unable to locate package "..pkgname) end
- pkginfo.manual = not auto
- fs.makeDirectory("/boot/pkg")
- for k,v in ipairs(pkginfo.dependencies or {}) do
-  if not getInstalled()[v] then
-   pkg.get(v,true)
-  end
- end
- dl(pkginfo.repository.path.."/"..pkginfo.filename,"/boot/pkg/"..pkginfo.filename)
- local installed = getInstalled()
- installed[pkgname] = pkginfo
- saveInstalled(installed)
- if pkginfo.system then
-  local rv = installSystemPackage("/boot/pkg/"..pkginfo.filename,pkginfo.compressed)
-  fs.remove("/boot/pkg/"..pkginfo.filename)
-  return rv
- end
- pcall(activatePackage,"/boot/pkg/"..pkginfo.filename,pkginfo.compressed)
- return true
-end
-
-function pkg.upgrade(force) -- boolean -- -- Upgrades all packages on the system to the current version stored in the relevant repository. If *force* is set, re-download all packages.
- pkg.update()
- fs.makeDirectory("/boot/pkg")
- local installed = getInstalled()
- for repo,info in pairs(getSources()) do
-  for pkgname,pkginfo in pairs(getRepoMeta(repo)) do
-   if installed[pkgname] and pkginfo.version ~= installed[pkgname].version or force then
-    pkg.remove(pkgname)
-    pkg.get(pkgname,pkginfo.auto)
-   end
-  end
- end
-end
-
-function pkg.remove(pkgname) -- string -- boolean -- Remove the package *pkgname* from the pkgfs and package directory.
- local installed = getInstalled()
- local pkginfo = installed[pkgname]
- if not pkginfo then return true end
- pcall(deactivatePackage,"/boot/pkg/"..pkginfo.filename)
- fs.remove("/boot/pkg/"..pkginfo.filename)
- if pkginfo.system then
-  for k,v in pairs(pkginfo.files) do
-   fs.remove(v)
-  end
- end
- installed[pkgname] = nil
- saveInstalled(installed)
- return true
-end
-
-return pkg

lib/rc.lua

@@ -1,11 +1,10 @@
 local serial = require "serialization"
 
 local rc = {}
-rc.paths = "/boot/service\n/pkg/service"
 rc.pids = {}
 local service = {}
 local cfg = {}
-cfg.enabled = {"getty","minitel","fsmanager"}
+cfg.enabled = {"getty","minitel"}
 
 local function loadConfig()
  local f = io.open("/boot/cfg/rc.cfg","rb")
@@ -24,17 +23,16 @@ local function saveConfig()
 end
 
 function rc.load(name,force) -- string boolean -- table -- Attempts to load service *name*, and if *force* is true, replaces the current instance.
- if not service[name] or force then
+ if force then
-  for d in rc.paths:gmatch("[^\n]+") do
+  rc.stop(name)
-   if fs.exists(d.."/"..name..".lua") then
+  service[name] = nil
-    service[name] = runfile(d.."/"..name..".lua")
-   end
-  end
  end
- if service[name] then
+ if service[name] then return true end
-  return service[name]
+ service[name] = setmetatable({},{__index=_G})
- end
+ local f = io.open("/boot/service/"..name..".lua","rb")
- return false, "unable to load service "..name
+ local res = load(f:read("*a"),name,"t",service[name])()
+ f:close()
+ return res
 end
 
 function rc.stop(name,...) -- string -- boolean string -- Stops service *name*, supplying *...* to the stop function. Returns false and a reason if this fails.

lib/rpc.lua

@@ -5,36 +5,19 @@ local rpc = {}
 _G.rpcf = {}
 rpc.port = 111
 
-local function setacl(self, fname, host)
- self[fname] = self[fname] or {}
- self[fname][host] = true
-end
--- function rpc.allow(fn, host) -- string string -- -- Enable the allow list for function *fname* and add *host* to it.
--- function rpc.deny(fn, host) -- string string -- -- Enable the deny list for function *fname* and add *host* to it.
-rpc.allow = setmetatable({},{__call=setacl})
-rpc.deny = setmetatable({},{__call=setacl})
-
-local function isPermitted(host,fn)
- if rpc.allow[fn] then
-  return rpc.allow[fn][host] or false
- end
- if rpc.deny[fn] and rpc.deny[fn][host] then
-  return false
- end
- return true
-end
-
 local function rpcexec(_, from, port, data)
- if port ~= rpc.port then return false end
+ if port == rpc.port then
- os.spawn(function()
+  local rpcrq = serial.unserialize(data)
-  local rpcrq = serial.unserialize(data) or {}
+  local rpcn, rpcid = table.remove(rpcrq,1), table.remove(rpcrq,1)
-  if rpcf[rpcrq[1]] and isPermitted(from,rpcrq[1]) then
+  if rpcf[rpcn] then
-   os.setenv("RPC_CLIENT",from)
+   local rt = {pcall(rpcf[rpcn],table.unpack(rpcrq))}
-   minitel.send(from,port,serial.serialize({rpcrq[2],pcall(rpcf[rpcrq[1]],table.unpack(rpcrq,3))}))
+   if rt[1] == true then
-  elseif type(rpcrq[2]) == "string" then
+    table.remove(rt,1)
-   minitel.send(from,port,serial.serialize({rpcrq[2],false,"function unavailable"}))
+   end
+   minitel.send(from,port,serial.serialize({rpcid,table.unpack(rt)}))
+  else
+  end
  end
- end,"rpc worker for "..tostring(from))
 end
 function rpcf.list()
  local rt = {}
@@ -56,13 +39,10 @@ function rpc.call(hostname,fn,...) -- string string -- boolean -- Calls exported
   local _, from, port, data = event.pull(30, "net_msg", hostname, rpc.port)
   rt = serial.unserialize(tostring(data)) or {}
  until (type(rt) == "table" and rt[1] == rv) or computer.uptime() > st + 30
- if rt[1] == rv then
+ if table.remove(rt,1) == rv then
-  if rt[2] then
+  return table.unpack(rt)
-   return table.unpack(rt,3)
-  end
-  error(rt[3])
  end
- error("timed out")
+ return false
 end
 function rpc.proxy(hostname,filter) -- string string -- table -- Returns a component.proxy()-like table from the functions on *hostname* with names matching *filter*.
  filter=(filter or "").."(.+)"
@@ -89,17 +69,11 @@ function rpc.register(name,fn) -- string function -- -- Registers a function to
  if not rpcrunning then
   os.spawn(function()
    while true do
-    pcall(rpcexec,event.pull("net_msg"))
+    rpcexec(event.pull("net_msg"))
    end
   end,"rpc daemon")
  end
  rpcf[name] = fn
 end
 
-function rpc.unregister(name) -- string -- -- Removes a function from the RPC function registry, clearing any ACL rules.
- rpcf[name] = nil
- rpc.allow[name] = nil
- rpc.deny[name] = nil
-end
-
 return rpc

lib/shell.lua

@@ -21,29 +21,24 @@ end
 function shell.interactive()
  local shenv = setmetatable({}, {__index=shindex})
  local run = true
- os.setenv("PATH",{"/boot/exec","/pkg/exec"})
  function shenv.quit()
   run = false
  end
  while run do
   io.write(string.format("\27[32m%s:%s>\27[0m ",os.getenv("HOSTNAME") or "localhost",(os.getenv("PWD") or _VERSION)))
-  local w,input = pcall(io.read)
+  local input = io.read()
-  if not w then
+  if input:sub(1,1) == "=" then
-   print("\27[31m^C")
+   input = "return "..input:sub(2)
+  end
+  local f, r = load(input, "shell", "t", shenv)
+  if not f then
+   print("\27[31m"..r)
   else
-   if input:sub(1,1) == "=" then
+   local rt = {pcall(f)}
-    input = "return "..input:sub(2)
+   local rs = table.remove(rt,1)
-   end
+   if not rs then io.write("\27[31m") end
-   local f, r = load(input, "shell", "t", shenv)
+   for k,v in pairs(rt) do
-   if not f then
+    print(formatValue(v))
-    print("\27[31m"..r)
-   else
-    local rt = {xpcall(f,debug.traceback)}
-    local rs = table.remove(rt,1)
-    if not rs then io.write("\27[31m") end
-    for k,v in pairs(rt) do
-     print(formatValue(v))
-    end
    end
   end
  end

lib/shutil.lua

@@ -2,7 +2,6 @@ local component = require "component"
 local fs = require "fs"
 local shell = require "shell"
 local ed = require "ed"
-local doc = require "doc"
 local shutil = {}
 shutil.ed = ed.interactive
 shutil.vi = ed.visual
@@ -83,7 +82,7 @@ function shutil.df() -- Prints free disk space.
  local fstr = "%-"..tostring(ml).."s %5s %5s"
  print("fs"..(" "):rep(ml-2).."  size  used")
  for k,v in pairs(mt) do
-  local st, su = fs.spaceTotal("/"..v), fs.spaceUsed("/"..v)
+  local st, su = fs.spaceTotal(v), fs.spaceUsed(v)
   print(string.format(fstr,v,wrapUnits(st),wrapUnits(su)))
  end
 end
@@ -119,38 +118,47 @@ function shutil.free() -- Displays used and free memory.
  print(string.format("%5s %5s %5s",wrapUnits(computer.totalMemory()),wrapUnits(computer.totalMemory()-computer.freeMemory()),wrapUnits(computer.freeMemory())))
 end
 
-function shutil.which(name)
- local fpath
- for _,dir in ipairs(os.getenv("PATH")) do
-  fpath = fpath or fs.exists(string.format("%s/%s.lua",dir,name)) and string.format("%s/%s.lua",dir,name) or fs.exists(string.format("%s/%s",dir,name)) and string.format("%s/%s",dir,name)
- end
- return fpath
-end
-
 shutil.cd = os.chdir
 shutil.mkdir = fs.makeDirectory
 shutil.cp = fs.copy
 shutil.rm = fs.remove
 
-return setmetatable({}, {__index = function(t,k)
+local function find_dir(t, dir)
- if shutil[k] then
+  local f = fs.list(dir)
-  return shutil[k]
+  for i=1, #f do
- end
+    if (f[i]:sub(#f[i]) == "/") then
- local path = shutil.which(k)
+      find_dir(t, dir..f[i])
- if path then
+    end
-  local fn, e = loadfile(path)
+    t[#t+1] = dir..f[i]
-  if not fn then error(string.format("\n - %s",e)) end
-  return function(...)
-   local tA = {...}
-   local pid = os.spawn(function() return fn(table.unpack(tA)) end,path)
-   local ret = {require("event").pull("process_finished",pid)}
-   if not ret[3] then
-    error(string.format("\n - %s",ret[4]))
-   end
-   for i = 1, 3 do
-    table.remove(ret,1)
-   end
-   return table.unpack(ret)
   end
- end
+end
-end})
+
+function shutil.find(...)
+  local paths = {...}
+  if not paths[1] then paths = {"."} end
+  for i=1, #paths do
+    if (paths[i]:sub(#paths[i]) ~= "/") then
+      paths[i] = paths[i] .. "/"
+    end
+  end
+  local t = {}
+  for i=1, #paths do
+    if fs.isDirectory(paths[i]) then
+      find_dir(t, paths[i])
+    end
+    t[#t+1] = paths[i]
+  end
+  return t
+end
+
+function shutil.filter(t, func)
+  local t2 = {}
+  for i=1, #t do
+    if (func(t[i])) then
+      t2[#t2+1] = t[i]
+    end
+  end
+  return t2
+end
+
+return shutil

lib/tsar.lua

@@ -0,0 +1,13 @@
+local tsar = package.loaded.tsar or {}
+
+function tsar.extract(fd, path, ...)
+
+end
+
+function tsar.create(paths, fd)
+
+end
+
+function tsar.list(fd)
+
+end

lib/tsuki.lua

@@ -0,0 +1,14 @@
+local foxfs = require "foxfs"
+local tsuki = {}
+
+function tsuki.reset_security_node(path)
+
+end
+
+function tsuki.reset_dev_permissions(path)
+
+end
+
+function tsuki.make_security_node(path)
+
+end

lib/unionfs.lua

@@ -0,0 +1,114 @@
+local unionfs = {}
+
+local function normalise(path)
+ return table.concat(fs.segments(path),"/")
+end
+
+function unionfs.create(...) -- string -- table -- Returns a unionfs object of the directories specified in *...*.
+ local paths,fids,fc = {...}, {}, 0
+ for k,v in pairs(paths) do
+  paths[k] = "/"..normalise(v)
+ end
+ local proxy = {}
+ local function realpath(path)
+  path = path or ""
+  for k,v in pairs(paths) do
+   if fs.exists(v.."/"..path) then
+    return v.."/"..path
+   end
+  end
+  return paths[1].."/"..path
+ end
+
+ function proxy.setLabel()
+  return false
+ end
+ 
+ function proxy.spaceUsed()
+  return fs.spaceUsed(paths[1])
+ end
+ function proxy.spaceTotal()
+  return fs.spaceTotal(paths[1])
+ end
+ function proxy.isReadOnly()
+  return fs.isReadOnly(paths[1])
+ end
+ function proxy.isDirectory(path)
+  return fs.isDirectory(realpath(path))
+ end
+ function proxy.lastModified(path)
+  return fs.lastModified(realpath(path))
+ end
+ function proxy.getLabel()
+  return fs.getLabel(paths[1])
+ end
+
+ function proxy.exists(path)
+  return fs.exists(realpath(path))
+ end
+ function proxy.remove(path)
+  return fs.remove(realpath(path))
+ end
+ function proxy.size(path)
+  return fs.size(realpath(path))
+ end
+
+ function proxy.list(path)
+  local nt,rt = {},{}
+  if #fs.segments(path) < 1 then
+   for k,v in pairs(paths) do
+    for l,m in ipairs(fs.list(v.."/"..path)) do
+     nt[m] = true
+    end
+   end
+   for k,v in pairs(nt) do
+    rt[#rt+1] = k
+   end
+   table.sort(rt)
+   return rt
+  else
+   return fs.list(realpath(path))
+  end
+ end
+
+ function proxy.open(path,mode)
+  local fh, r = fs.open(realpath(path),mode)
+  if not fh then return fh, r end
+  fids[fc] = fh
+  fc = fc + 1
+  return fc - 1
+ end
+
+ function proxy.close(fid)
+  if not fids[fid] then
+   return false, "file not open"
+  end
+  local rfh = fids[fid]
+  fids[fid] = nil
+  return rfh:close()
+ end
+ function proxy.write(fid,d)
+  if not fids[fid] then
+   return false, "file not open"
+  end
+  return fids[fid]:write(d)
+ end
+ function proxy.read(fid,d)
+  if not fids[fid] then
+   return false, "file not open"
+  end
+  local rb = fids[fid]:read(d)
+  if rb == "" then rb = nil end
+  return rb
+ end
+ function proxy.seek(fid,d)
+  if not fids[fid] then
+   return false, "file not open"
+  end
+  return fids[fid]:seek(d)
+ end
+
+ return proxy
+end
+
+return unionfs

lib/vcomponent.lua

@@ -0,0 +1,197 @@
+local proxylist = {}
+local proxyobjs = {}
+local typelist = {}
+local doclist = {}
+
+local oproxy = component.proxy
+function component.proxy(address)
+	checkArg(1,address,"string")
+	if proxyobjs[address] ~= nil then
+		return proxyobjs[address]
+	end
+	return oproxy(address)
+end
+
+local olist = component.list
+function component.list(filter, exact)
+	checkArg(1,filter,"string","nil")
+	local result = {}
+	local data = {}
+	for k,v in olist(filter, exact) do
+		data[#data + 1] = k
+		data[#data + 1] = v
+		result[k] = v
+	end
+	for k,v in pairs(typelist) do
+		if filter == nil or (exact and v == filter) or (not exact and v:find(filter, nil, true)) then
+			data[#data + 1] = k
+			data[#data + 1] = v
+			result[k] = v
+		end
+	end
+	local place = 1
+	return setmetatable(result, 
+		{__call=function()
+			local addr,type = data[place], data[place + 1]
+			place = place + 2
+			return addr, type
+		end}
+	)
+end
+
+local otype = component.type
+function component.type(address)
+	checkArg(1,address,"string")
+	if typelist[address] ~= nil then
+		return typelist[address]
+	end
+	return otype(address)
+end
+
+local odoc = component.doc
+function component.doc(address, method)
+	checkArg(1,address,"string")
+	checkArg(2,method,"string")
+	if proxylist[address] ~= nil then
+		if proxylist[address][method] == nil then
+			error("no such method",2)
+		end
+		if doclist[address] ~= nil then
+			return doclist[address][method]
+		end
+		return nil
+	end
+	return odoc(address, method)
+end
+
+local oslot = component.slot
+function component.slot(address)
+	checkArg(1,address,"string")
+	if proxylist[address] ~= nil then
+		return -1 -- vcomponents do not exist in a slot
+	end
+	return oslot(address)
+end
+
+local omethods = component.methods
+function component.methods(address)
+	checkArg(1,address,"string")
+	if proxylist[address] ~= nil then
+		local methods = {}
+		for k,v in pairs(proxylist[address]) do
+			if type(v) == "function" then
+				methods[k] = true -- All vcomponent methods are direct
+			end
+		end
+		return methods
+	end
+	return omethods(address)
+end
+
+local oinvoke = component.invoke
+function component.invoke(address, method, ...)
+	checkArg(1,address,"string")
+	checkArg(2,method,"string")
+	if proxylist[address] ~= nil then
+		if proxylist[address][method] == nil then
+			error("no such method",2)
+		end
+		return proxylist[address][method](...)
+	end
+	return oinvoke(address, method, ...)
+end
+
+local ofields = component.fields
+function component.fields(address)
+	checkArg(1,address,"string")
+	if proxylist[address] ~= nil then
+		return {} -- What even is this?
+	end
+	return ofields(address)
+end
+
+local componentCallback =
+{
+	__call = function(self, ...) return proxylist[self.address][self.name](...) end,
+	__tostring = function(self) return (doclist[self.address] ~= nil and doclist[self.address][self.name] ~= nil) and doclist[self.address][self.name] or "function" end
+}
+
+local vcomponent = {}
+
+function vcomponent.register(address, ctype, proxy, doc)
+	checkArg(1,address,"string")
+	checkArg(2,ctype,"string")
+	checkArg(3,proxy,"table")
+	if proxylist[address] ~= nil then
+		return nil, "component already at address"
+	elseif component.type(address) ~= nil then
+		return nil, "cannot register over real component"
+	end
+	proxy.address = address
+	proxy.type = ctype
+	local proxyobj = {}
+	for k,v in pairs(proxy) do
+		if type(v) == "function" then
+			proxyobj[k] = setmetatable({name=k,address=address},componentCallback)
+		else
+			proxyobj[k] = v
+		end
+	end
+	proxylist[address] = proxy
+	proxyobjs[address] = proxyobj
+	typelist[address] = ctype
+	doclist[address] = doc
+	computer.pushSignal("component_added",address,ctype)
+	return true
+end
+
+function vcomponent.unregister(address)
+	checkArg(1,address,"string")
+	if proxylist[address] == nil then
+		if component.type(address) ~= nil then
+			return nil, "cannot unregister real component"
+		else
+			return nil, "no component at address"
+		end
+	end
+	local thetype = typelist[address]
+	proxylist[address] = nil
+	proxyobjs[address] = nil
+	typelist[address] = nil
+	doclist[address] = nil
+	computer.pushSignal("component_removed",address,thetype)
+	return true
+end
+
+function vcomponent.list()
+	local list = {}
+	for k,v in pairs(proxylist) do
+		list[#list + 1] = {k,typelist[k],v}
+	end
+	return list
+end
+
+function vcomponent.resolve(address, componentType)
+	checkArg(1, address, "string")
+	checkArg(2, componentType, "string", "nil")
+	for k,v in pairs(typelist) do
+		if componentType == nil or v == componentType then
+			if k:sub(1, #address) == address then
+				return k
+			end
+		end
+	end
+	return nil, "no such component"
+end
+
+local r = math.random
+function vcomponent.uuid()
+	return string.format("%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+	r(0,255),r(0,255),r(0,255),r(0,255),
+	r(0,255),r(0,255),
+	r(64,79),r(0,255),
+	r(128,191),r(0,255),
+	r(0,255),r(0,255),r(0,255),r(0,255),r(0,255),r(0,255))
+end
+
+return vcomponent

lib/velx.lua

@@ -0,0 +1,7 @@
+local velx = package.loaded.velx or {}
+
+function velx.parse(fd)
+
+end
+
+return velx

lib/vtansi.lua

@@ -1,35 +1,7 @@
 local vtansi = {}
-local keyboardIgnore = {}
+function vtansi.vtemu(gpu) -- table -- function -- takes GPU component proxy *gpu* and returns a function to write to it in a manner like an ANSI terminal
-vtansi.activeBuffers = {}
-vtansi.sequences = {
- [28] = "\n", -- newline
- [200] = "\27[A", -- up
- [203] = "\27[D", -- left
- [205] = "\27[C", -- right
- [208] = "\27[B", -- down
- [201] = "\27[5~", -- page up
- [209] = "\27[6~" -- page down
-}
-vtansi.keys = {}
-vtansi.keys[0x38] = "lalt"
-vtansi.keys[0xB8] = "ralt"
-function vtansi.saveToBuffer(gpu,idx)
- gpu.bitblt(idx, nil, nil, nil, nil, 0)
-end
-function vtansi.loadFromBuffer(gpu,idx)
- gpu.bitblt(0, nil, nil, nil, nil, idx)
-end
-function vtansi.switchToBuffer(gpu,idx)
- -- copy screen to the active buffer
- vtansi.saveToBuffer(gpu,vtansi.activeBuffers[gpu.address])
- -- copy the new buffer to the screen
- vtansi.loadFromBuffer(gpu,idx)
- vtansi.activeBuffers[gpu.address] = idx
-end
-function vtansi.vtemu(gpu,bn) -- table number -- function -- takes GPU component proxy *gpu* and returns a function to write to it in a manner like an ANSI terminal, either allocating a new buffer or using *bn*.
  local colours = {0x0,0xFF0000,0x00FF00,0xFFFF00,0x0000FF,0xFF00FF,0x00B6FF,0xFFFFFF}
  local mx, my = gpu.maxResolution()
- local buffer = nil
  local cx, cy = 1, 1
  local pc = " "
  local lc = ""
@@ -40,19 +12,8 @@ function vtansi.vtemu(gpu,bn) -- table number -- function -- takes GPU component
  local bg, fg = 0, 0xFFFFFF
 
  -- setup
- if gpu.getActiveBuffer then
+ gpu.setResolution(mx,my)
-  buffer = bn or gpu.allocateBuffer(mx,my)
+ gpu.fill(1,1,mx,my," ")
-  vtansi.activeBuffers[gpu.address] = vtansi.activeBuffers[gpu.address] or buffer
-  local oldActiveBuffer = vtansi.activeBuffers[gpu.address]
-  gpu.setActiveBuffer(buffer)
-  gpu.setResolution(mx,my)
-  gpu.fill(1,1,mx,my," ")
-  gpu.setActiveBuffer(oldActiveBuffer)
- else
-  gpu.setResolution(mx,my)
-  gpu.fill(1,1,mx,my," ")
- end
-
  local function checkCursor()
   if cx > mx and lw then
    cx, cy = 1, cy+1
@@ -67,13 +28,6 @@ function vtansi.vtemu(gpu,bn) -- table number -- function -- takes GPU component
  end
 
  local function termwrite(s)
-  if buffer then
-   if vtansi.activeBuffers[gpu.address] == buffer then
-    gpu.setActiveBuffer(0)
-   else
-    gpu.setActiveBuffer(buffer)
-   end
-  end
   local wb = ""
   local lb, ec = nil, nil
   local function flushwb()
@@ -96,9 +50,8 @@ function vtansi.vtemu(gpu,bn) -- table number -- function -- takes GPU component
     if cc == "\n" then
      flushwb()
      cx,cy = 1, cy+1
-     checkCursor()
     elseif cc == "\t" then
-     wb=wb..(" "):rep((((cx//8)+1) * 8) - cx + 1)
+     wb=wb..(" "):rep(8*((cx+9)//8))
     elseif cc == "\27" then
      flushwb()
      mode = 1
@@ -123,31 +76,20 @@ function vtansi.vtemu(gpu,bn) -- table number -- function -- takes GPU component
      if cc == "H" then
       cx, cy = math.min(mx,tA[1] or 1), math.min(my,tA[2] or 1)
      elseif cc == "A" then
-      for i = 1, (tA[1] or 1) do
+      cy = cy - (tA[1] or 1)
-       cy = cy - 1
-       checkCursor()
-      end
      elseif cc == "B" then
-      for i = 1, (tA[1] or 1) do
+      cy = cy + (tA[1] or 1)
-       cy = cy + 1
-       checkCursor()
-      end
      elseif cc == "C" then
-      for i = 1, (tA[1] or 1) do
+      cx = cx + (tA[1] or 1)
-       cx = cx + 1
-       checkCursor()
-      end
      elseif cc == "D" then
-      for i = 1, (tA[1] or 1) do
+      cx = cx - (tA[1] or 1)
-       cx = cx - 1
-       checkCursor()
-      end
      elseif cc == "s" then
       sx, sy = cx, cy
      elseif cc == "u" then
       cx, cy = sx, sy
      elseif cc == "n" and tA[1] == 6 then
       rs = string.format("%s\27[%d;%dR",rs,cx,cy)
+      dprint(string.format("reporting %d;%d as current cursor position",cx,cy))
      elseif cc == "K" and tA[1] == 1 then
       gpu.fill(1,cy,cx,1," ")
      elseif cc == "K" and tA[1] == 2 then
@@ -164,7 +106,7 @@ function vtansi.vtemu(gpu,bn) -- table number -- function -- takes GPU component
      elseif cc == "m" then
       for _,num in ipairs(tA) do
        if num == 0 then
-        fg,bg,ec,lb = 0xFFFFFF,0,false,true
+        fg,bg,ec,lb = 0xFFFFFF,0,true,true
        elseif num == 7 then
         local nfg,nbg = bg, fg
         fg, bg = nfg, nbg
@@ -197,65 +139,48 @@ function vtansi.vtemu(gpu,bn) -- table number -- function -- takes GPU component
   return rs, lb, ec
  end
 
- return termwrite, buffer
+ return termwrite
 end
 
-function vtansi.vtsession(gpua,scra,bn) -- string string number -- function function function -- creates a process to handle the GPU and screen address combination *gpua*/*scra*, optionally using buffer number *bn* specifically. Returns read, write and "close" functions.
+function vtansi.vtsession(gpua,scra) -- string string -- table -- creates a process to handle the GPU and screen address combination *gpua*/*scra*. Returns read, write and "close" functions.
- local modifiers = {}
  local gpu = component.proxy(gpua)
--- gpu.bind(scra)
+ gpu.bind(scra)
- local write, bn = vtansi.vtemu(gpu,bn)
+ local write = vtansi.vtemu(gpu)
  local kba = {}
  for k,v in ipairs(component.invoke(scra,"getKeyboards")) do
   kba[v]=true
  end
- local buf, lbuf, echo = "", false, false
+ local buf, lbuf, echo = "", true, true
- os.spawn(function()
+ os.spawn(function() dprint(pcall(function()
   while true do
-   local ty,ka,ch,kc = coroutine.yield()
+   local ty,ka,ch = coroutine.yield()
-   if kba[ka] and keyboardIgnore[ka] == bn then
+   if ty == "key_down" and kba[ka] then
-    keyboardIgnore[ka] = nil
+    if ch == 13 then ch = 10 end
-   end
+    if ch == 8 and lbuf then
-   if kba[ka] and vtansi.keys[kc] then
+     if buf:len() > 0 then
-    modifiers[vtansi.keys[kc]] = ty == "key_down"
+      if echo then write("\8 \8") end
-   end
+      buf = buf:sub(1,-2)
-   if ty == "key_down" and kba[ka] and (bn == nil or vtansi.activeBuffers[gpua] == bn) then
-    if bn and ty == "key_down" and kba[ka] and ch == 46 and kc == 52 and (modifiers.lalt or modifiers.ralt) then
-     -- next buffer
-     local allBuffers = gpu.buffers()
-     for k,v in ipairs(allBuffers) do
-      if v == vtansi.activeBuffers[gpu.address] and allBuffers[k+1] and not keyboardIgnore[ka] then
-       keyboardIgnore[ka] = bn
-       vtansi.switchToBuffer(gpu,allBuffers[k+1])
-      end
-     end
-    elseif bn and ty == "key_down" and kba[ka] and ch == 44 and kc == 51 and (modifiers.lalt or modifiers.ralt) then
-     -- previous buffer
-     local allBuffers = gpu.buffers()
-     for k,v in ipairs(allBuffers) do
-      if v == vtansi.activeBuffers[gpu.address] and allBuffers[k-1] and not keyboardIgnore[ka] then
-       keyboardIgnore[ka] = bn
-       vtansi.switchToBuffer(gpu,allBuffers[k-1])
-      end
-     end
-    else
-     local outs
-     if ch > 0 then
-      outs = string.char(ch)
-     end
-     outs = vtansi.sequences[kc] or outs
-     if outs then
-      if echo then write(outs) end
-      buf=buf..outs
      end
+    elseif ch > 0 then
+     if echo then write(string.char(ch)) end
+     buf=buf..string.char(ch)
     end
    end
   end
- end,string.format("ttyd[%s:%s/%i]",gpua:sub(1,8),scra:sub(1,8),tonumber(bn) or 0))
+ end)) end,string.format("ttyd[%s:%s]",gpua:sub(1,8),scra:sub(1,8)))
  local function bread(n)
-  coroutine.yield()
+  local r
-  local r = buf
+  if lbuf then
-  buf = ""
+   while not buf:find("\n") do
+    coroutine.yield()
+   end
+   local n = buf:find("\n")
+   r, buf = buf:sub(1,n), buf:sub(n+1)
+  else
+   r = buf
+   buf = ""
+   coroutine.yield()
+  end
   return r
  end
  local function bwrite(d)

luabuild.lua

@@ -0,0 +1,47 @@
+local actions = {}
+
+local function list(dir)
+	local h = io.popen("ls \""..dir.."\"", "r")
+	local ents = {}
+	for l in h:lines() do
+		ents[#ents+1] = l
+	end
+	h:close()
+	return ents
+end
+
+local function find(dir, pattern, inverse, ctype)
+	local h = io.popen("find \""..dir.."\" "..(((inverse) and "-not ") or "")..(((ctype) and "-type "..ctype.." ") or "").."-name \""..pattern.."\"", "r")
+	local ents = {}
+	for l in h:lines() do
+		ents[#ents+1] = l
+	end
+	h:close()
+	return ents
+end
+
+local function lastmod(file)
+	local h = io.popen("stat -c %Y \""..file.."\"")
+	local num = tonumber(h:read("*a"))
+	h:close()
+	return num
+end
+
+@[[local h = io.popen("ls .buildactions", "r")
+for line in h:lines() do]]
+--#include @[{".buildactions/"..line}]
+@[[end]]
+
+function actions.all()
+	for i=1, #actions do
+		actions[actions[i]]()
+	end
+end
+
+if not arg[1] then
+	arg[1] = "all"
+end
+
+actions[arg[1]]()
+
+print("Build complete.")

module/base.lua

@@ -1,10 +0,0 @@
---#include "module/syslog.lua"
---#include "module/sched.lua"
---#include "module/buffer.lua"
---#include "module/osutil.lua"
---#include "module/fs.lua"
---#include "module/io.lua"
---#include "module/devfs.lua"
---#include "module/devfs/syslog.lua"
---#include "module/component-get.lua"
---#include "module/loadfile.lua"

module/bootloader.lua

@@ -0,0 +1,21 @@
+_OSVERSION="PsychOS 2.0a2-$[[git rev-parse --short HEAD]]"
+function lzss_decompress(a)local b,c,d,e,j,i,h,g=1,'',''while b<=#a do
+e=c.byte(a,b)b=b+1
+for k=0,7 do h=c.sub
+g=h(a,b,b)if e>>k&1<1 and b<#a then
+i=c.unpack('>I2',a,b)j=1+(i>>4)g=h(d,j,j+(i&15)+2)b=b+1
+end
+b=b+1
+c=c..g
+d=h(d..g,-4^6)end
+end
+return c end
+local oload = load
+function load(src, ...)
+	if (src:sub(1,4) == "\27ZLS") then
+		src = lzss_decompress(src:sub(5))
+	end
+	return oload(src, ...)
+end
+
+load($[[ luacomp -mluamin module/init.lua | lua zlua.lua | lua escape.lua ]])()

module/buffer.lua

@@ -234,114 +234,26 @@ function buffer:read(...)
  end
 
  local function readLine(chop)
-  if not self.mode.t then
+  local start = 1
-   local start = 1
+  while true do
-   while true do
+   local l = self.bufferRead:find("\n", start, true)
-    local l = self.bufferRead:find("\n", start, true)
+   if l then
-    if l then
+    local result = self.bufferRead:sub(1, l + (chop and -1 or 0))
-     local result = self.bufferRead:sub(1, l + (chop and -1 or 0))
+    self.bufferRead = self.bufferRead:sub(l + 1)
-     self.bufferRead = self.bufferRead:sub(l + 1)
+    return result
-     return result
+   else
-    else
+    start = #self.bufferRead
-     start = #self.bufferRead
+    local result, reason = readChunk()
-     local result, reason = readChunk()
+    if not result then
-     if not result then
+     if reason then
-      if reason then
+      return nil, reason
-       return nil, reason
+     else -- eof
-      else -- eof
+      local result = #self.bufferRead > 0 and self.bufferRead or nil
-       local result = #self.bufferRead > 0 and self.bufferRead or nil
+      self.bufferRead = ""
-       self.bufferRead = ""
+      return result
-       return result
-      end
      end
     end
    end
-  else
-   -- this whole thing is a house of cards. good luck.
-   io.write("\27[s\27[8m\27[6n")
-   if not (self.mx or self.my) then
-    io.write("\27[9999;9999H\27[6n\27[u")
-   end
-   local pos, buffer, hIndex, sx, sy = 1, "", 0
-   self.history = self.history or {}
-   local function redraw()
-    -- scroll until the buffer will fit on the screen
-    while sx and sy and self.mx and self.my and #buffer > (self.mx * ((self.my - sy) + 1)) - sx do
-     sy = sy - 1
-     io.write("\27[9999;9999H ")
-     io.write(string.format("\27[2K\27[%i;%iH\27[s", sx, sy))
-    end
-    io.write(string.format("\27[u%s \27[u\27[%iC",buffer,(#buffer-pos)+1))
-   end
-   while true do
-    char = readBytesOrChars(1)
-    if char == "\27" then
-     if readBytesOrChars(1) == "[" then
-      local args = {""}
-      repeat
-       char = readBytesOrChars(1)
-       if char:match("%d") then
-        args[#args] = args[#args]..char
-       else
-        args[#args] = tonumber(args[#args])
-        args[#args+1] = ""
-       end
-      until not char:match("[%d;]")
-      if char == "C" then -- right
-       if pos > 1 then
-        pos = pos - 1
-       end
-      elseif char == "D" then -- left
-       if pos <= #buffer then
-        pos = pos + 1
-       end
-      elseif char == "A" then -- up
-       hIndex = hIndex + 1
-       io.write("\27[u"..(" "):rep(buffer:len()+1))
-       buffer = self.history[1+#self.history-hIndex] or buffer
-       pos = 1
-      elseif char == "B" then -- down
-       hIndex = hIndex - 1
-       io.write("\27[u"..(" "):rep(buffer:len()+1))
-       if hIndex == 0 then
-        hIndex = hIndex - 1
-        buffer = ""
-       end
-       buffer = self.history[1+#self.history-hIndex] or buffer
-       pos = 1
-      elseif char == "R" then -- cursor position report
-       self.mx, self.my = sx and math.max(self.mx or 0, args[1]) or self.mx, sy and math.max(self.my or 0, args[2]) or self.my
-       sx, sy = sx or args[1], sy or args[2]
-      end
-      hIndex = math.max(math.min(hIndex,#self.history),0)
-     end
-    elseif char == "\8" then -- backspace
-     if #buffer > 0 and pos <= #buffer then
-      buffer = buffer:sub(1, (#buffer - pos)) .. buffer:sub((#buffer - pos) + 2)
-     end
-    elseif char == "\3" then -- ^C, error
-     error("terminated")
-    elseif char == "\1" then -- ^A, go to start of line
-     pos = buffer:len()+1
-    elseif char == "\5" then -- ^E, go to end of line
-     pos = 1
-    elseif char == "\2" then -- ^B, back one word
-     local nc = buffer:reverse():find(" ",pos+1)
-     pos = nc or #buffer+1
-    elseif char == "\6" then -- ^F, forward one word
-     local nc = buffer:find(" ",math.max(#buffer-pos+3,0))
-     pos = (nc and #buffer-nc+2) or 1
-    elseif char == "\13" or char == "\10" or char == "\n" then -- return / newline
-     io.write("\n")
-     self.history[#self.history+1] = buffer ~= "" and buffer ~= self.history[#self.history] and buffer or nil
-     if #self.history > (self.maxhistory or 16) then table.remove(self.history,1) end
-     if chop then buffer = buffer .. "\n" end
-     return buffer
-    else
-     buffer = buffer:sub(1, (#buffer - pos) + 1) .. char .. buffer:sub((#buffer - pos) + 2)
-    end
-    redraw()
-   end
   end
  end
 

module/component-get.lua

@@ -1,8 +0,0 @@
-function component.get(addr, ctype)
-  for c in component.list(ctype, true) do
-    if c:sub(1, addr:len()) == addr then
-      return c
-    end
-  end
-  return nil, "no such component"
-end

module/fs.lua

@@ -54,7 +54,7 @@ function fs.open(path,mode) -- string string -- table -- Opens file *path* with
   if mode:find("r") then
    fobj.read = fread
   end
-  if mode:find("w") or mode:find("a") then
+  if mode:find("w") then
    fobj.write = fwrite
   end
   return fobj
@@ -68,11 +68,7 @@ function fs.copy(from,to) -- string string -- boolean -- copies a file from *fro
  if not of or not df then
   return false
  end
- local tmp
+ df:write(of:read("*a"))
- repeat
-  tmp = of:read(2048)
-  df:write(tmp or "")
- until not tmp
  df:close()
  of:close()
  return true
@@ -107,7 +103,6 @@ function fs.mounts() -- -- table -- Returns a table containing the mount points
  for k,v in pairs(fsmounts) do
   rt[#rt+1] = k,v.address or "unknown"
  end
- table.sort(rt)
  return rt
 end
 
@@ -117,12 +112,12 @@ function fs.address(path) -- string -- string -- Returns the address of the file
 end
 function fs.type(path) -- string -- string -- Returns the component type of the filesystem at a given path, if applicable
  local fsi,_ = fs.resolve(path)
- return fsmounts[fsi].fstype or fsmounts[fsi].type or "filesystem"
+ return fsmounts[fsi].type or "filesystem"
 end
 
 fsmounts["/"] = component.proxy(computer.tmpAddress())
 fs.makeDirectory("temp")
-if computer.getBootAddress and component.type(computer.getBootAddress()) == "filesystem" then
+if computer.getBootAddress then
  fs.makeDirectory("boot")
  fs.mount("boot",component.proxy(computer.getBootAddress()))
 end

module/init.lua

@@ -1,4 +1,12 @@
-_OSVERSION=_OSVERSION or "PsychOS 2"
+--#include "module/syslog.lua"
+--#include "module/sched.lua"
+--#include "module/buffer.lua"
+--#include "module/osutil.lua"
+--#include "module/fs.lua"
+--#include "module/io.lua"
+--#include "module/devfs.lua"
+--#include "module/devfs/syslog.lua"
+--#include "module/loadfile.lua"
 
 os.spawn(function()
  os.setenv("PWD","/boot")
@@ -12,9 +20,6 @@ os.spawn(function()
  end
  os.setenv("HOSTNAME",hostname)
  syslog(string.format("Hostname set to %s",hostname))
- if fs.exists("/boot/pkg") then
-  pcall(require,"pkgfs")
- end
  local pids = {}
  local rc = require "rc"
  for k,v in pairs(rc.cfg.enabled) do

module/io.lua

@@ -8,7 +8,7 @@ end
 
 function io.input(fd) -- table -- table -- Sets the default input stream to *fd* if provided, either as a buffer as a path. Returns the default input stream.
  if type(fd) == "string" then
-  fd=io.open(fd,"rbt")
+  fd=io.open(fd,"rb")
  end
  if fd then
   os.setenv("STDIN",fd)
@@ -32,9 +32,8 @@ function io.write(...) -- Writes its arguments to the default output stream.
  io.output():write(...)
 end
 
-function print(...) -- Writes each argument to the default output stream, separated by space.
+function print(...) -- Writes each argument to the default output stream, separated by newlines.
  for k,v in ipairs({...}) do
-  io.write((k>1 and "\t" or "")..tostring(v))
+  io.write(tostring(v).."\n")
  end
- io.write("\n")
 end

module/loadfile.lua

@@ -7,20 +7,20 @@ end
 function runfile(p,...) -- string -- -- runs file *p* with arbitrary arguments in the current thread
  return loadfile(p)(...)
 end
-
+function os.spawnfile(p,n,...) -- string string -- number -- spawns a new process from file *p* with name *n*, with arguments following *n*.
+ local tA = {...}
+ return os.spawn(function() local res={pcall(loadfile(p), table.unpack(tA))} computer.pushSignal("process_finished", os.pid(), table.unpack(res)) dprint(table.concat(res)) end,n or p)
+end
 _G.package = {}
-package.path="/boot/lib/?.lua;/pkg/lib/?.lua;/boot/lib/?/init.lua;/pkg/lib/?/init.lua;./?;./?.lua;./?/init.lua"
+package.loaded = {computer=computer,component=component,fs=fs,buffer=buffer}
-package.loaded = {buffer=buffer, component=component, computer=computer, coroutine=coroutine, fs=fs, math=math, os=os, package=package, string=string, table=table}
-package.alias = {filesystem="fs"}
 function require(f,force) -- string boolean -- table -- searches for a library with name *f* and returns what the library returns, if possible. if *force* is set, loads the library even if it is cached
- f=package.alias[f] or f
  if not package.loaded[f] or force then
-  local ln = f:gsub("%.","/")
+  local lib = os.getenv("LIB") or "/boot/lib"
-  for d in package.path:gmatch("[^;]+") do
+  for d in lib:gmatch("[^\n]+") do
-   local p = d:gsub("%?",ln)
+   if fs.exists(d.."/"..f) then
-   if fs.exists(p) and not fs.isDirectory(p) then
+    package.loaded[f] = runfile(d.."/"..f)
-    package.loaded[f] = runfile(p)
+   elseif fs.exists(d.."/"..f..".lua") then
-    break
+    package.loaded[f] = runfile(d.."/"..f..".lua")
    end
   end
  end

module/rtfsboot.lua

@@ -1,20 +0,0 @@
---#includepkglib "diskpart" "lib/diskpart.lua" "diskpart"
---#includepkglib "rtfs" "lib/fs/rtfs/init.lua" "fs.rtfs"
---#includepkglib "rtfs" "lib/fs/rtfs/v1.lua" "fs.rtfs.v1"
-do
- local a = computer.getBootAddress()
- if component.type(a) == "drive" or component.type(a) == "tape_drive" then
-  local diskpart = require "diskpart"
-  for k,v in ipairs(diskpart.getPartitions(a)) do
-   if v[2] == "rtfs" and v[1] == computer.address():sub(1,8) .. "-boot" then
-    syslog("Partition with suitable name detected, attempting to mount...")
-    local rtfs = require "fs.rtfs"
-    fs.makeDirectory("boot")
-    local m = rtfs.mount(diskpart.proxyPartition(a,k))
-    m.address = string.format("%s/%i/rtfs",a,k)
-    fs.mount("boot",m)
-    break
-   end
-  end
- end
-end

module/sched.lua

@@ -1,20 +1,11 @@
 do
-local tTasks,nPid,nTimeout,cPid = {},1,0.25,0 -- table of tasks, next process ID, default event timeout, current PID
+local tTasks,nPid,nTimeout,cPid = {},1,0.25,0 -- table of tasks, next process ID, event timeout, current PID
 function os.spawn(f,n) -- function string -- number -- creates a process from function *f* with name *n*
  tTasks[nPid] = {
-  c=coroutine.create(function()
+  c=coroutine.create(f), -- actual coroutine
-   local rt = {pcall(f)}
-   if not rt[1] then
-    syslog(rt[2])
-   end
-   computer.pushSignal("process_finished",os.pid(),table.unpack(rt))
-  end), -- actual coroutine
   n=n, -- process name
   p=nPid, -- process PID
   P=cPid, -- parent PID
-  t=0, -- CPU time
-  T=0, -- total uptime
-  E=nTimeout, -- event timeout
   e={} -- environment variables
  }
  if tTasks[cPid] then
@@ -41,21 +32,16 @@ end
 function os.taskInfo(pid) -- number -- table -- returns info on process *pid* as a table with name and parent values
  pid = pid or os.pid()
  if not tTasks[pid] then return false end
- return {name=tTasks[pid].n,parent=tTasks[pid].P,cputime=tTasks[pid].t,iotime=tTasks[pid].T,timeout=tTasks[pid].E}
+ return {name=tTasks[pid].n,parent=tTasks[pid].P}
 end
 function os.sched() -- the actual scheduler function
  os.sched = nil
- local sTimeout = nTimeout
  while #tTasks > 0 do
-  local tEv = {computer.pullSignal(sTimeout)}
+  local tEv = {computer.pullSignal(nTimeout)}
-  sTimeout = nTimeout
   for k,v in pairs(tTasks) do
    if coroutine.status(v.c) ~= "dead" then
     cPid = k
-    local sT, sC = os.clock(), computer.uptime()
     coroutine.resume(v.c,table.unpack(tEv))
-    v.t, v.T = v.t + os.clock() - sT, v.T + computer.uptime() - sC
-    sTimeout=math.min(sTimeout, v.E)
    else
     tTasks[k] = nil
    end
@@ -72,9 +58,11 @@ function os.getenv(k) -- gets a process' *k* environment variable
   return tTasks[cPid].e[k]
  end
 end
-function os.setTimeout(n,pid)
+function os.setTimeout(n)
- assert(type(n) == "number" and n >= 0)
+ if type(n) == "number" and n >= 0 then
- tTasks[pid or cPid].E = n
+  nTimeout = n
- return true
+  return true
+ end
+ return false
 end
 end

obootstrap.lua

@@ -1,31 +0,0 @@
-local fs = require "filesystem"
-
-local wdir = "/tmp/psbootstrap"
-local dlfiles = {
- ["/lib/libmtar.lua"] = "https://git.shadowkat.net/izaya/OC-misc/raw/branch/master/mtar/libmtar.lua",
- ["/lib/fs/rtfs/init.lua"] = "https://git.shadowkat.net/izaya/PsychOSPackages/raw/branch/master/rtfs/lib/fs/rtfs/init.lua", 
- ["/lib/fs/rtfs/v1.lua"] = "https://git.shadowkat.net/izaya/PsychOSPackages/raw/branch/master/rtfs/lib/fs/rtfs/v1.lua", 
- ["/lib/diskpart.lua"] = "https://git.shadowkat.net/izaya/PsychOSPackages/raw/branch/master/diskpart/lib/diskpart.lua", 
- ["/etc/rc.d/partman.lua"] = "https://git.shadowkat.net/izaya/OC-misc/raw/branch/master/partition/OpenOS/etc/rc.d/partman.lua", 
- ["/bin/slicer.lua"] = "https://git.shadowkat.net/izaya/PsychOSPackages/raw/branch/master/slicer/exec/slicer.lua",
- ["/bin/boopu.lua"] = "https://git.shadowkat.net/izaya/PsychOSPackages/raw/branch/master/boopu/exec/boopu.lua",
-}
-
-local function run(cmd)
- print(cmd)
- os.execute(cmd)
-end
-
-print("Downloading and linking files...")
-for k,v in pairs(dlfiles) do
- local tpath = string.format("%s/%s", wdir, k)
- local isdir = fs.isDirectory(fs.path(tpath)) or fs.makeDirectory(fs.path(tpath))
- run(string.format("wget '%s' '%s'", v, tpath))
- local lt = k
- while not fs.isDirectory(fs.path(lt)) and not fs.isLink(fs.path(lt)) do
-  lt = fs.path(lt)
- end
- if fs.get(tpath) ~= fs.get(lt) then
-  run(string.format("ln '%s/%s' '%s'", wdir, lt, lt))
- end
-end

preproc.lua

@@ -1,121 +0,0 @@
-local preproc = {}
-preproc.directives = {}
-
-function preproc.parsewords(line) -- string -- table -- Returns a table of words from the string *line*, parsing quotes and escapes.
- local rt = {""}
- local escaped, quoted = false, false
- for c in line:gmatch(".") do
-  if escaped then
-   rt[#rt] = rt[#rt]..c
-  elseif c == '"' or c == "'" then
-   quoted = not quoted
-  elseif c == "\\" then
-   escaped = true
-  elseif c:match("%s") and not quoted and rt[#rt]:len() > 0 then
-   rt[#rt+1] = ""
-  else
-   rt[#rt] = rt[#rt]..c
-  end
- end
- return rt
-end
-
-function preproc.line(line) -- string -- -- Returns either a function - which can be called to get lines until it returns nil - or a string from processing *line* using preprocessor directives.
- if line:match("^%-%-#") then
-  local directive, args = line:match("^%-%-#(%S+)%s(.+)")
-  print(directive,args)
-  local args = preproc.parsewords(args)
-  if preproc.directives[directive] then
-   return preproc.directives[directive](table.unpack(args))
-  else
-   error("unknown preprocessor directive: "..directive)
-  end
- else
-  return line
- end
-end
-
-function preproc.preproc(...) -- string -- string -- Returns the output from preprocessing the files listed in *...*.
- local tA = {...}
- local output = ""
- for _,fname in ipairs(tA) do
-  local f,e = io.open(fname)
-  if not f then error("unable to open file "..fname..": "..e) end
-  for line in f:lines() do
-   local r = preproc.line(line)
-   if type(r) == "function" then
-    while true do
-     local rs = r()
-     if not rs then break end
-     output = output .. rs .. "\n"
-    end
-   else
-    output = output .. r .. "\n"
-   end
-  end
- end
- return output
-end
-
-preproc.directives.include = preproc.preproc
-
-function preproc.directives.includelib(file, name) -- string string -- string -- Returns a preprocessed inlined library
- return string.format("package.loaded['%s'] = (function()\n%s\nend)()", name, preproc.preproc(file))
-end
-
-function preproc.directives.includepkgfile(package, file)
- if (_OSVERSION or ""):sub(1,7) == "PsychOS" then
-  return preproc.preproc(string.format("/pkg/%s", file))
- else
-  for path in (os.getenv("PSYCHOSPACKAGES") or "../PsychOSPackages"):gmatch("[^:]+") do
-   local f = io.open(string.format("%s/%s/%s", path, package, file), "r")
-   if f then
-    f:close()
-    return preproc.preproc(string.format("%s/%s/%s", path, package, file))
-   end
-  end
- end
- error(string.format("unable to locate file %s from package %s", file, package))
-end
-
-function preproc.directives.includepkglib(package, file, name) -- string string -- string -- Returns a preprocessed inlined library
- return string.format("package.loaded['%s'] = (function()\n%s\nend)()", name, preproc.directives.includepkgfile(package, file))
-end
-
-local minify = true
-local minifyFilters = {
- {"%-%-%[%[.-%]%]",""},
- {"%-%-.-\n","\n"},
- {"\n[ \t]+","\n"},
- {"%s?%.%.%s?",".."},
- {"%s?==%s?","=="},
- {"%s?~=%s?","~="},
- {"%s?>=%s?",">="},
- {"%s?<=%s?","<="},
- {"%s?>%s?",">"},
- {"%s?<%s?","<"},
- {"%s?=%s?","="},
- {"%s?,%s?",","},
- {",\n",","},
- {"\n\n+","\n"},
- {"[ \t]\n","\n"},
- {"%{%s+","{"},
- {"%s+%}","}"}
-}
-
-return setmetatable(preproc,{__call=function(_,...)
- local tA = {...}
- local out = table.remove(tA,#tA)
- local f,e = io.open(out,"wb")
- if not f then error("unable to open file "..out..": "..e) end
- local out = preproc.preproc(table.unpack(tA))
- if preproc.minify then
-  local olen = #out
-  for k,v in ipairs(minifyFilters) do
-   out = out:gsub(v[1],v[2])
-  end
-  print(olen, #out)
- end
- f:write(out)
- f:close()
-end})

service/fsmanager.lua

@@ -1,44 +1,26 @@
-local fsmanager = {}
+local function mount(addr)
-fsmanager.filesystems = {}
+ dest = component.invoke(addr,"getLabel") or "mnt/"..addr:sub(1,3)
-local run = true
+ dest = "/"..dest
-
-function fsmanager.mount(addr)
- for k,v in ipairs(fs.mounts()) do
-  if fs.address(v) == addr then
-   return
-  end
- end
- dest = "/" .. (component.invoke(addr,"getLabel") or "mnt/"..addr:sub(1,3))
  syslog("Mounting "..addr.." to "..dest)
  fs.makeDirectory(dest)
  local w,r = fs.mount(dest,component.proxy(addr))
  if not w then 
   syslog("Failed to mount: "..r)
-  return false
  end
- fsmanager.filesystems[addr] = dest
+end
+for addr, _ in component.list("filesystem") do
+ mount(addr)
 end
 
-function fsmanager.start()
+function start()
- run = true
  return os.spawn(function()
-  for addr, _ in component.list("filesystem") do
+  while true do
-   fsmanager.mount(addr)
-  end
-  while run do
    local tE = {coroutine.yield()}
    if tE[1] == "component_added" and tE[3] == "filesystem" then
-    fsmanager.mount(tE[2])
+    mount(tE[2])
-   elseif tE[1] == "component_removed" and fsmanager.filesystems[tE[2]] and tE[3] == "filesystem" then
+   elseif tE[1] == "component_removed" and tE[3] == "filesystem" then
-    syslog("Unmounting "..tE[2].." from "..fsmanager.filesystems[tE[2]])
+    fs.umount("/mnt/"..tE[2]:sub(1,3))
-    fs.umount(fsmanager.filesystems[tE[2]])
-    fsmanager.filesystems[tE[2]] = nil
    end
   end
  end,"fsmanager")
 end
-function fsmanager.stop()
- run = false
-end
-
-return fsmanager

service/getty.lua

@@ -37,31 +37,20 @@ local function spawnShell(fin,fout)
  io.input(fin)
  io.output(fout):setvbuf("no")
  print(_OSVERSION.." - "..tostring(math.floor(computer.totalMemory()/1024)).."K RAM")
- print((os.getenv("HOSTNAME") or "unknown") .. " on " .. fin)
  return os.spawn(shell.interactive, "shell: "..tostring(fin))
 end
 
 local function allocate()
  for k,v in pairs(gpus) do
-  dprint("Setting up display "..k)
+  dprint(k)
   local sA = nextScreen(v[2])
   if v[1] == false and sA then
-   local terminals = 1
+   local r,w = vtansi.vtsession(k,sA)
-   local gpu = component.proxy(k)
+   devfs.register("tty"..tostring(ttyn), function() return r,w,function() end end)
-   gpu.bind(sA)
-   if gpu.buffers then
-    gpu.freeAllBuffers()
-    local mw, mh = gpu.maxResolution()
-    terminals = math.floor(gpu.freeMemory() / (mw * mh))
-   end
-   for i = 1, terminals do
-    local r,w = vtansi.vtsession(k,sA)
-    devfs.register("tty"..tostring(ttyn), function() return r,w,function() end end)
-    pids["tty"..tostring(ttyn)] = {-1}
-    ttyn = ttyn + 1
-   end
    gpus[k][1] = true
    screens[sA][1] = true
+   pids["tty"..tostring(ttyn)] = {-1}
+   ttyn = ttyn + 1
   end
  end
 end
@@ -70,15 +59,14 @@ function start()
 basepid = os.spawn(function()
 scan()
 allocate()
-dprint("Display setup complete.")
+dprint("screens ready")
 while true do
  coroutine.yield()
  for k,v in pairs(pids) do
   if not os.taskInfo(v[1]) then
    dprint("Spawning new shell for "..k)
    pids[k][1] = spawnShell(v[2] or "/dev/"..k, v[3] or "/dev/"..k)
-   pids[k][2], pids[k][3] = pids[k][2] or "/dev/"..k, pids[k][3] or "/dev/"..k
+   pids[k][2], pids[k][3] = pids[k][2] or io.input(), pids[k][3] or io.output()
-   coroutine.yield()
   end
  end
 end
@@ -89,4 +77,3 @@ function stop()
  os.kill(basepid)
  basepid = nil
 end
-return {start=start,stop=stop}

service/minitel.lua

@@ -271,4 +271,3 @@ function del_route(to)
  cfg.sroutes[to] = nil
  saveconfig()
 end
-return {start=start,stop=stop,set=set,set_route=set_route,del_route=del_route}

service/screenblank.lua

@@ -1,25 +0,0 @@
-local lastkey = computer.uptime()
-local state = true
-local delay = 60
-function start()
- return os.spawn(function()
-  while true do
-   tEv = {coroutine.yield()}
-   if tEv[1] == "key_down" then
-    lastkey = computer.uptime()
-    if not state then
-     for addr in component.list("screen") do
-      component.invoke(addr,"turnOn")
-     end
-     state = true
-    end
-   end
-   if computer.uptime() > lastkey + delay and state then
-    for addr in component.list("screen") do
-      component.invoke(addr,"turnOff")
-    end
-    state = false
-   end
-  end
- end,"screenblank")
-end

service/tape-devfs.lua

@@ -1,28 +0,0 @@
-local counter = 0
-local td = {}
-local function addNode(addr)
- devfs.register("tape"..tonumber(counter),function()
-  local tape = component.proxy(addr)
-  tape.seek(-math.huge)
-  return tape.read, tape.write, function() end, tape.seek
- end)
- devfs.register("tapen"..tonumber(counter),function()
-  local tape = component.proxy(addr)
-  return tape.read, tape.write, function() end, tape.seek
- end)
- td[addr] = counter
- counter = counter + 1
-end
-for addr in component.list("tape_drive") do
- addNode(addr)
-end
-while true do
- local tE = {coroutine.yield()}
- if tE[1] == "component_added" and tE[3] == "tape_drive" then
-  addNode(tE[2])
- elseif tE[1] == "component_removed" and tE[3] == "tape_drive" then
-  if td[tE[2]] then
-   fs.remove("/dev/tape"..tostring(td[tE[2]]))
-  end
- end
-end

service/termsrv.lua

@@ -1,63 +0,0 @@
-local minitel = require "minitel"
-local shell = require "shell"
-local port = 22
-
-local function sread(self, len)
- while true do
-  local d=self.sock:read(len)
-  if d then
-   return d
-  end
-  coroutine.yield()
- end
-end
-local function swrite(self, data)
- while self.flushing do
-  coroutine.yield()
- end
- if data and data:len() > 0 then
-  self.wb = self.wb .. (data or "")
- end
-end
-local function sclose(self)
- self.sock:close()
-end
-local function sflush(self)
- self.flushing = true
- self.sock:write(self.wb)
- self.wb = ""
- self.flushing = false
-end
-
-function start()
- return os.spawn(function()
- local oout = io.output()
- local pname = os.taskInfo(os.pid()).name
- while true do
-  local sock = minitel.listen(port)
-  print(string.format("Connection from %s:%d",sock.addr,sock.port))
-  os.spawn(function() _G.worked = {pcall(function()
-   local fh = {}
-   fh.sock = sock
-   fh.read = sread
-   fh.write = swrite
-   fh.close = sclose
-   fh.flush = sflush
-   fh.wb = ""
-   io.input(fh)
-   io.output(fh)
-   print(_OSVERSION.." - "..tostring(math.floor(computer.totalMemory()/1024)).."K RAM")
-   local pid = os.spawn(shell.interactive,string.format(pname.." shell [%s:%d]",sock.addr,sock.port))
-   repeat
-    coroutine.yield()
-    if fh.wb:len() > 0 then
-     fh:flush()
-    end
-   until sock.state ~= "open" or not os.taskInfo(pid)
-   sock:close()
-   os.kill(pid)
-   oout:write(string.format("Session %s:%d ended",sock.addr,sock.port))
-  end)} end,string.format(pname.." [%s:%d]",sock.addr,sock.port))
- end
- end,"termsrv")
-end

service/wolbeacon.lua

@@ -1,18 +0,0 @@
-local delay = 60
-local port = 3442
-local message = "WoLBeacon"
-
-for modem in component.list("modem") do
- component.invoke(modem,"setWakeMessage",message)
-end
-
-local ltime = computer.uptime()
-while true do
- if computer.uptime() > ltime+delay then
-  for modem in component.list("modem") do
-   component.invoke(modem,"broadcast",port,message)
-  end
-  ltime=computer.uptime()
- end
- coroutine.yield()
-end

zlua.lua

@@ -1,14 +1,12 @@
+local f = io.stdin:read("*a")
+
 --[[----------------------------------------------------------------------------
-
 	LZSS - encoder / decoder
-
 	This is free and unencumbered software released into the public domain.
-
 	Anyone is free to copy, modify, publish, use, compile, sell, or
 	distribute this software, either in source code form or as a compiled
 	binary, for any purpose, commercial or non-commercial, and by any
 	means.
-
 	In jurisdictions that recognize copyright laws, the author or authors
 	of this software dedicate any and all copyright interest in the
 	software to the public domain. We make this dedication for the benefit
@@ -16,7 +14,6 @@
 	successors. We intend this dedication to be an overt act of
 	relinquishment in perpetuity of all present and future rights to this
 	software under copyright law.
-
 	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 	EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
@@ -24,9 +21,7 @@
 	OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 	ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 	OTHER DEALINGS IN THE SOFTWARE.
-
 	For more information, please refer to <http://unlicense.org/>
-
 --]]----------------------------------------------------------------------------
 --------------------------------------------------------------------------------
 local M = {}
@@ -84,40 +79,4 @@ function M.compress(input)
 	return table.concat(output)
 end
 
---------------------------------------------------------------------------------
+io.stdout:write("\27ZLS"..M.compress(f))
-function M.decompress(input)
-	local offset, output = 1, {}
-	local window = ''
-
-	while offset <= #input do
-		local flags = string.byte(input, offset)
-		offset = offset + 1
-
-		for i = 1, 8 do
-			local str = nil
-			if (flags & 1) ~= 0 then
-				if offset <= #input then
-					str = string.sub(input, offset, offset)
-					offset = offset + 1
-				end
-			else
-				if offset + 1 <= #input then
-					local tmp = string.unpack('>I2', input, offset)
-					offset = offset + 2
-					local pos = (tmp >> LEN_BITS) + 1
-					local len = (tmp & (LEN_SIZE - 1)) + LEN_MIN
-					str = string.sub(window, pos, pos + len - 1)
-				end
-			end
-			flags = flags >> 1
-			if str then
-				output[#output + 1] = str
-				window = string.sub(window .. str, -POS_SIZE)
-			end
-		end
-	end
-
-	return table.concat(output)
-end
-
-return M