we 2.0a2 now

build.sh

@@ -3,7 +3,7 @@ rm -r target/*
 mkdir target &>/dev/null
 mkdir target/cfg
 lua luapreproc.lua module/init.lua target/init.lua
-echo _OSVERSION=\"PsychOS 2.0a1-$(git rev-parse --short HEAD)\" > target/version.lua
+echo _OSVERSION=\"PsychOS 2.0a2-$(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 exec/ service/ lib/ target/

exec/cat.lua

@@ -1,6 +0,0 @@
-local tA = {...}
-for _,fn in ipairs(tA) do
- local f = io.open(fn,"rb")
- io.write(f:read("*a"))
- f:close()
-end

exec/df.lua

@@ -1,23 +0,0 @@
-local mt = fs.mounts()
-local ml = 0
-for k,v in pairs(mt) do
- if v:len() > ml then
-  ml = v:len()
- end
-end
-local scale = {"K","M","G","T","P"}
-local function wrapUnits(n)
- local count = 0
- while n > 1024 do
-  count = count + 1
-  if not scale[count] then return "inf" end
-  n = n / 1024
- end
- return tostring(math.floor(n))..(scale[count] or "")
-end
-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)
- print(string.format(fstr,v,wrapUnits(st),wrapUnits(su)))
-end

exec/ed.lua

@@ -1,129 +0,0 @@
-local tA = {...}
-local ft, p, fp, ct, il, it, c, C = {}, 1, fp or tA[1] or "", {}, "", {}, "", C -- file table, pointer, filename, command table, input line, input table, command, content
-function ct.readfile(fp,rp)
- if not fp then return end
- if not rp then ft = {} end
- local f=io.open(fp,"rb")
- if f then
-  C=f:read("*a")
-  f:close()
-  for l in C:gmatch("[^\n]+") do
-   ft[#ft+1] = l
-  end
- end
-end
-function ct.writefile(nfp)
- if not nfp then nfp = fp end
- print(nfp)
- f=io.open(nfp,"wb")
- if f then
-  for k,v in ipairs(ft) do
-   print(v)
-   f:write(v.."\n")
-  end
-  coroutine.yield()
-  f:close()
-  coroutine.yield()
-  print(f.b)
- end
-end
-function ct.list(s,e)
- s,e = s or 1, e or #ft
- for i = s,e do
-  if ft[i] then
-   print(string.format("%4d\t %s",i,ft[i]))
-  end
- end
-end
-function ct.sp(np)
- np=tonumber(np)
- if np then
-  if np > #ft then
-   np = #ft
-  elseif np < 1 then
-   np = 0
-  end
-  p=np
- end
-end
-function ct.pointer(np)
- ct.sp(np)
- print(string.format("%4d\t %s",p,ft[p]))
-end
-function ct.insert(np)
- ct.sp(np)
- while true do
-  io.write(string.format("%4d\t ",p))
-  local l=io.read()
-  if l == "." then break end
-  table.insert(ft,p,l)
-  p=p+1
- end
-end
-function ct.append(np)
- ct.sp(np)
- p=p+1
- if #ft < 1 then p = 1 end
- ct.insert()
-end
-function ct.delete(np,n)
- ct.sp(np)
- _G.clip = ""
- for i = 1, (n or 1) do
-  _G.clip = _G.clip .. table.remove(ft,p) .. "\n"
- end
-end
-function ct.substitute(np,n)
- ct.delete(np,n)
- ct.insert(np)
-end
-function ct.filename(np)
- if np then fp = np end
- print(fp)
-end
-
-local function rawpaste()
- for line in string.gmatch(_G.clip,"[^\n]") do
-  print(string.format("%4d\t %s",p,line))
-  table.insert(ft,p,line)
- end
-end
-function ct.pasteprevious(np)
- ct.sp(np)
- rawpaste()
-end
-function ct.paste(np)
- ct.sp(np)
- p = p + 1
- rawpaste()
-end
-
-ct.o = ct.readfile
-ct.w = ct.writefile
-ct.l = ct.list
-ct.p = ct.pointer
-ct.i = ct.insert
-ct.a = ct.append
-ct.s = ct.substitute
-ct.d = ct.delete
-ct.f = ct.filename
-ct.PP = ct.pasteprevious
-ct.P = ct.paste
-
-ct.readfile(fp)
-
-while true do
- io.write("skex2> ")
- il,it=io.read(),{}
- for w in il:gmatch("%S+") do
-  it[#it+1] = w
- end
- c=table.remove(it,1)
- if c == "quit" or c == "q" then
-  break
- elseif c:sub(1,1) == "!" then
-  print(pcall(load(c:sub(2))))
- elseif ct[c] ~= nil then
-  ct[c](table.unpack(it))
- end
-end

exec/exportfs.lua

@@ -1,11 +0,0 @@
-local rpcs = require "rpc"
-local ufs = require "unionfs"
-
-local tA = {...}
-local path = "/"..table.concat(fs.segments(tA[1]),"/")
-
-local px = ufs.create(path)
-for k,v in pairs(px) do
- rpcs.register(path.."_"..k,v)
- print(path.."_"..k)
-end

exec/fget.lua

@@ -1,40 +0,0 @@
-local minitel = require "minitel"
-
-local tA = {...}
-
-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
-
-local proto, host, port, path = parseURL(tA[1])
-proto,port = proto or "fget", port or 70
-local fname, rtype = tA[2] or "-", tA[3] or "t"
-
-local sock = minitel.open(host,port)
-local f = nil
-if fname ~= "-" then
- f = io.open(fname,"w")
- if not f then error("couldn't open file for writing") end
-else
- f = io.open(os.getenv("t"))
- f.close = function() end
-end
-if not sock then error("couldn't open connection to host") end
-sock:write(string.format("%s%s\n",rtype,path))
-local rtype, buf = "", ""
-repeat
- coroutine.yield()
- rtype = sock:read(1)
-until rtype ~= ""
-repeat
- coroutine.yield()
- buf = sock:read("*a")
- f:write(buf)
-until sock.state == "closed" and buf == ""
-f:close()

exec/free.lua

@@ -1,2 +0,0 @@
-print("Total  Used  Free")
-print(string.format("%4iK %4iK %4iK",math.floor(computer.totalMemory()/1024),math.floor((computer.totalMemory()-computer.freeMemory())/1024),math.floor(computer.freeMemory()/1024)))

exec/importfs.lua

@@ -1,9 +0,0 @@
-local rpc = require "rpc"
-local tA = {...}
-local host, rpath, lpath = tA[1], tA[2], tA[3]
-
-local px = rpc.proxy(host,rpath.."_")
-function px.getLabel()
- return host..":"..rpath
-end
-fs.mount(lpath,px)

exec/init.lua

@@ -1,33 +0,0 @@
-if os.taskInfo(1) and os.pid() ~= 1 then
- return false, "init already started"
-end
-os.setenv("PWD","/boot")
-io.input("/dev/null")
-io.output("/dev/syslog")
-local f = io.open("/boot/cfg/hostname","rb")
-local hostname = computer.address():sub(1,8)
-if f then
- hostname = f:read("*l")
- f:close()
-end
-os.setenv("HOSTNAME",hostname)
-syslog(string.format("Hostname set to %s",hostname))
-local pids = {}
-local function loadlist()
- local f = io.open("/boot/cfg/init.txt","rb")
- if not f then return false end
- for line in f:read("*a"):gmatch("[^\r\n]+") do
-  pids[line] = -1
- end
- f:close()
-end
-loadlist()
-while true do
- for k,v in pairs(pids) do
-  if not os.taskInfo(v) then
-   syslog("Starting service "..k)
-   pids[k] = os.spawnfile("/boot/service/"..k)
-  end
- end
- coroutine.yield()
-end

exec/ls.lua

@@ -1,10 +0,0 @@
-local tA = {...}
-tA[1] = tA[1] or "."
-for _,d in ipairs(tA) do
- if #tA > 1 then
-  print(d..":")
- end
- for _,f in ipairs(fs.list(d)) do
-  print(" "..f)
- end
-end

exec/mkarchive.lua

@@ -1,44 +0,0 @@
-local tArgs = {...}
-local output = table.remove(tArgs,#tArgs)
-local of = io.open(output,"wb")
-local files, dirs = {}, {tArgs[1] or "."}
-
-local function cint(n,l)
- local t={}
- for i = 0, 7 do
-  t[i+1] = (n >> (i * 8)) & 0xFF
- end
- return string.reverse(string.char(table.unpack(t)):sub(1,l))
-end
-
-local function genHeader(fname,len)
- return string.format("%s%s%s",cint(fname:len(),2),fname,cint(len,2))
-end
-
-for k,v in pairs(dirs) do
- local dir = fs.list(v)
- for _,file in ipairs(dir) do
-  if fs.isDirectory(file) then
-   dirs[#dirs+1] = v.."/"..file
-  else
-   files[#files+1] = v.."/"..file
-  end
- end
-end
-
-for k,v in ipairs(files) do
- io.write(v)
- local f = io.open(v,"rb")
- if f then
-  of:write(genHeader(v,fs.size(v)))
-  while true do
-   local c = f:read(1024)
-   if not c or c == "" then break end
-   of:write(c)
-  end
-  f:close()
- end
- print("... done")
-end
-of:write(string.char(0):rep(2))
-of:close()

exec/mount.lua

@@ -1,24 +0,0 @@
-local tA = {...}
-if #tA < 1 then
- local mt = fs.mounts()
- for k,v in pairs(mt) do
-  print(tostring(fs.address(v)).." on "..tostring(v).." type "..fs.type(v))
- end
-else
- local addr,path = tA[1],tA[2]
- local fscomp = component.list("filesystem")
- if not fscomp[addr] then
-  for k,v in pairs(fscomp) do
-   if k:find(addr) then
-    print(tostring(addr).." not found, assuming you meant "..k)
-    addr = k
-    break
-   end
-  end
- end
- local proxy = component.proxy(addr)
- if not proxy then
-  return false, "no such filesystem component"
- end
- print(fs.mount(path,proxy))
-end

exec/nc.lua

@@ -1,23 +0,0 @@
-local minitel = require "minitel"
-local tA = {...}
-
-host, port = tA[1], tA[2] or 22
-
-local socket = minitel.open(host,port)
-if not socket then return false end
-local b = ""
-os.spawn(function()
- repeat
-  local b = socket:read("*a")
-  if b and b:len() > 0 then
-   io.write(b)
-  end
-  coroutine.yield()
- until socket.state ~= "open"
-end)
-repeat
- local b = io.read()
- if b and b:len() > 0 then
-  socket:write(b.."\n")
- end
-until socket.state ~= "open"

exec/ping.lua

@@ -1,17 +0,0 @@
-local minitel = require "minitel"
-local event = require "event"
-local tArgs = {...}
-local addr = tArgs[1]
-local times = tonumber(tArgs[2]) or 5
-local timeout = tonumber(tArgs[3]) or 30
-for i = 1, times do
- local ipt = computer.uptime()
- local pid = minitel.genPacketID()
- computer.pushSignal("net_send",1,addr,0,"ping",pid)
- local t,a = event.pull(timeout,"net_ack")
- if t == "net_ack" and a == pid then
-  print("Ping reply: "..tostring(computer.uptime()-ipt).." seconds.")
- else
-  print("Timed out.")
- end
-end

exec/ps.lua

@@ -1,5 +0,0 @@
-print("PID# Parent | Name")
-for k,v in pairs(os.tasks()) do
- local t = os.taskInfo(v)
- print(string.format("%4d   %4d | %s",v,t.parent,t.name))
-end

exec/shell.lua

@@ -1,57 +0,0 @@
-local serial = require "serialization"
-local event = require "event"
-print(pcall(function()
-local shenv = {}
-function shenv.quit()
- os.setenv("run",nil)
-end
-shenv.cd = os.chdir
-shenv.mkdir = fs.makeDirectory
-shenv.cp = fs.copy
-local function findPath(name)
- path = os.getenv("PATH") or "/boot/exec"
- for l in path:gmatch("[^\n]+") do
-  if fs.exists(l.."/"..name) then
-   return l.."/"..name
-  elseif fs.exists(l.."/"..name..".lua") then
-   return l.."/"..name..".lua"
-  end
- end
-end
-setmetatable(shenv,{__index=function(_,k)
- local fp = findPath(k)
- if _G[k] then
-  return _G[k]
- elseif _G.libs[k] then
-  return _G.libs[k]
- elseif fp then
-  return function(...)
-   local tA = {...}
-   local pid = os.spawnfile(fp,fp,table.unpack(tA))
-   local tE = {event.pull("process_finished",pid)}
-   if tE[1] == true then
-    table.remove(tE,1)
-   end
-   return table.unpack(tE)
-  end
- end
-end})
-print(_VERSION)
-os.setenv("run",true)
-while os.getenv("run") do
- io.write(string.format("%s:%s> ",os.getenv("HOSTNAME") or "localhost",(os.getenv("PWD") or _VERSION)))
- local input=io.read()
- if input:sub(1,1) == "=" then
-  input = "return "..input:sub(2)
- end
- tResult = {pcall(load(input,"shell","t",shenv))}
- if tResult[1] == true then table.remove(tResult,1) end
- for k,v in pairs(tResult) do
-  if type(v) == "table" then
-   print(serial.serialize(v,true))
-  else
-   print(v)
-  end
- end
-end
-end))

exec/unarchive.lua

@@ -1,52 +0,0 @@
-local tArgs = {...}
-
-local function toint(s)
- s=s or ""
- local n = 0
- local i = 1
- while true do
-  local p = s:sub(i,i)
-  if p == "" then break end
-  local b = string.byte(p)
-  n = n << 8
-  n = n | b
-  i=i+1
- end
- return n
-end
-
-local fi = io.open(tArgs[1])
-while true do
- local nlen = toint(fi:read(2))
- if nlen == 0 then
-  break
- end
- local name = fi:read(nlen)
- local fsize = toint(fi:read(2))
- io.write(string.format("%s: %d... ",name,fsize))
- if not tArgs[2] then
-  local dir = name:match("(.+)/.*%.?.+")
-  if (dir) then
-   fs.makeDirectory(dir)
-  end
-  local f = io.open(name,"wb")
-  local rsize,buf = fsize, ""
-  if f then
-   repeat
-    buf = fi:read(math.min(rsize,1024))
-    f:write(buf)
-    rsize = rsize - buf:len()
-   until rsize <= 1
-   f:close()
-  end
- else
-  local rsize = fsize
-  repeat
-   buf = fi:read(math.min(rsize,1024))
-   rsize = rsize - buf:len()
-  until rsize <= 1
- end
- print(fsize)
- coroutine.yield()
-end
-fi:close()

exec/wget.lua

@@ -1,20 +0,0 @@
-local tA = {...}
-local url = tA[1]
-local path = tA[2]
-local R=component.invoke(component.list("internet")(),"request",url)
-if not R then return false end
-local f=io.open(path,"wb")
-if not f then return false end
-repeat
- coroutine.yield()
-until R.finishConnect()
-local code, message, headers = R.response()
-if code > 299 or code < 200 then
- return false, code, message
-end
-repeat
- coroutine.yield()
- ns = R.read(2048)
- f:write(ns or "")
-until not ns
-f:close()

lib/netutil.lua

@@ -0,0 +1,38 @@
+local computer = require "computer"
+local minitel = require "minitel"
+local rpc = require "rpc"
+local netutil = {}
+
+function netutil.importfs(host,rpath,lpath)
+ local px = rpc.proxy(host,rpath.."_")
+ function px.getLabel()
+  return host..":"..rpath
+ end
+ fs.mount(lpath,px)
+end
+
+function netutil.exportfs(path)
+ local path = "/"..table.concat(fs.segments(path),"/")
+ local px = ufs.create(path)
+ for k,v in pairs(px) do
+  rpcs.register(path.."_"..k,v)
+  print(path.."_"..k)
+ end
+end
+
+function ping(addr,times,timeout)
+ local times, timeout = times or 5, timeout or 30
+ for i = 1, times do
+  local ipt = computer.uptime()
+  local pid = minitel.genPacketID()
+  computer.pushSignal("net_send",1,addr,0,"ping",pid)
+  local t,a = event.pull(timeout,"net_ack")
+  if t == "net_ack" and a == pid then
+   print("Ping reply: "..tostring(computer.uptime()-ipt).." seconds.")
+  else
+   print("Timed out.")
+  end
+ end
+end
+
+return netutil

lib/shell.lua

@@ -0,0 +1,34 @@
+local shell = {}
+shell.include = {"shutil"}
+local function shindex(self,k)
+ if rawget(self,k) then return rawget(self,k) end
+ for _,v in pairs(os.getenv("INCLUDE") or shell.include) do
+  if require(v)[k] then return require(v)[k] end
+ end
+ if package.loaded[k] then return package.loaded[k] end
+ return _G[k]
+end
+
+function shell.interactive()
+ local shenv = setmetatable({}, {__index=shindex})
+ local run = true
+ while run do
+  io.write(string.format("%s:%s> ",os.getenv("HOSTNAME") or "localhost",(os.getenv("PWD") or _VERSION)))
+  local input = io.read()
+  if input:sub(1,1) == "=" then
+   input = "return "..input:sub(2)
+  end
+  local f, r = load(input, "shell", "t", shenv)
+  if not f then
+   print(r)
+  else
+   local rt = {pcall(f)}
+   local rs = table.remove(rt,1)
+   for k,v in pairs(rt) do
+    print(tostring(v))
+   end
+  end
+ end
+end
+
+return shell

lib/shutil.lua

@@ -0,0 +1,101 @@
+local component = require "component"
+local fs = require "fs"
+local shell = require "shell"
+local shutil = {}
+
+function shutil.import(lib)
+ local cE = os.getenv("INCLUDE") or shell.include
+ local nE = {}
+ for k,v in pairs(cE) do
+  nE[#nE+1] = v
+ end
+ require(lib)
+ nE[#nE+1] = lib
+ return true
+end
+
+function shutil.ls(...)
+ local tA = {...}
+ if not tA[1] then tA[1] = "." end
+ for _,d in ipairs(tA) do
+  if #tA > 1 then
+   print(d..":")
+  end
+  for _,f in ipairs(fs.list(d)) do
+   print(" "..f)
+  end
+ end
+end
+
+function shutil.cat(...)
+ for _,fn in ipairs({...}) do
+  local f = io.open(fn,"rb")
+  io.write(f:read("*a"))
+  f:close()
+ end
+end
+
+function shutil.ps()
+ print("PID# Parent | Name")
+ for k,v in pairs(os.tasks()) do
+  local t = os.taskInfo(v)
+  print(string.format("%4d   %4d | %s",v,t.parent,t.name))
+ end
+end
+
+function shutil.df()
+ local mt = fs.mounts()
+ local ml = 0
+ for k,v in pairs(mt) do
+  if v:len() > ml then
+   ml = v:len()
+  end
+ end
+ local scale = {"K","M","G","T","P"}
+ local function wrapUnits(n)
+  local count = 0
+  while n > 1024 do
+   count = count + 1
+   if not scale[count] then return "inf" end
+   n = n / 1024
+  end
+  return tostring(math.floor(n))..(scale[count] or "")
+ end
+ 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)
+  print(string.format(fstr,v,wrapUnits(st),wrapUnits(su)))
+ end
+end
+
+function shutil.mount(addr,path)
+ if not addr then
+  local mt = fs.mounts()
+  for k,v in pairs(mt) do
+   print(tostring(fs.address(v)).." on "..tostring(v).." type "..fs.type(v))
+  end
+ else
+  local fscomp = component.list("filesystem")
+  if not fscomp[addr] then
+   for k,v in pairs(fscomp) do
+    if k:find(addr) then
+     print(tostring(addr).." not found, assuming you meant "..k)
+     addr = k
+     break
+    end
+   end
+  end
+  local proxy = component.proxy(addr)
+  if not proxy then
+   return false, "no such filesystem component"
+  end
+  print(fs.mount(path,proxy))
+ end
+end
+
+shutil.cd = os.chdir
+shutil.mkdir = fs.makeDirectory
+shutil.cp = fs.copy
+
+return shutil

module/buffer.lua

@@ -0,0 +1,429 @@
+-- shamelessly stolen from plan9k
+
+buffer = {}
+
+function buffer.new(mode, stream)
+ local result = {
+  mode = {},
+  stream = stream,
+  bufferRead = "",
+  bufferWrite = "",
+  bufferSize = math.max(512, math.min(8 * 1024, computer.freeMemory() / 8)),
+  bufferMode = "full",
+  readTimeout = math.huge
+ }
+ mode = mode or "r"
+ for i = 1, unicode.len(mode) do
+  result.mode[unicode.sub(mode, i, i)] = true
+ end
+ local metatable = {
+  __index = buffer,
+  __metatable = "file"
+ }
+ return setmetatable(result, metatable)
+end
+
+
+local function badFileDescriptor()
+ return nil, "bad file descriptor"
+end
+
+function buffer:close()
+ if self.mode.w or self.mode.a then
+  self:flush()
+ end
+ self.closed = true
+ return self.stream:close()
+end
+
+function buffer:flush()
+ local result, reason = self.stream:write(self.bufferWrite)
+ if result then
+  self.bufferWrite = ""
+ else
+  if reason then
+   return nil, reason
+  else
+   return nil, "bad file descriptor"
+  end
+ end
+
+ return self
+end
+
+function buffer:lines(...)
+ local args = table.pack(...)
+ return function()
+  local result = table.pack(self:read(table.unpack(args, 1, args.n)))
+  if not result[1] and result[2] then
+   error(result[2])
+  end
+  return table.unpack(result, 1, result.n)
+ end
+end
+
+function buffer:read(...)
+ local timeout = computer.uptime() + self.readTimeout
+
+ local function readChunk()
+  if computer.uptime() > timeout then
+   error("timeout")
+  end
+  local result, reason = self.stream:read(self.bufferSize)
+  if result then
+   self.bufferRead = self.bufferRead .. result
+   return self
+  else -- error or eof
+   return nil, reason
+  end
+ end
+
+ local function readBytesOrChars(n)
+  n = math.max(n, 0)
+  local len, sub
+  if self.mode.b then
+   len = rawlen
+   sub = string.sub
+  else
+   len = unicode.len
+   sub = unicode.sub
+  end
+  local buffer = ""
+  repeat
+   if len(self.bufferRead) == 0 then
+    local result, reason = readChunk()
+    if not result then
+     if reason then
+      return nil, reason
+     else -- eof
+      return #buffer > 0 and buffer or nil
+     end
+    end
+   end
+   local left = n - len(buffer)
+   buffer = buffer .. sub(self.bufferRead, 1, left)
+   self.bufferRead = sub(self.bufferRead, left + 1)
+  until len(buffer) == n
+  
+  --kernel.io.println("buffer read: "..tostring(buffer))
+  return buffer
+ end
+
+ local function readNumber()
+  local len, sub
+  if self.mode.b then
+   len = rawlen
+   sub = string.sub
+  else
+   len = unicode.len
+   sub = unicode.sub
+  end
+  local buffer = ""
+  local first = true
+  local decimal = false
+  local last = false
+  local hex = false
+  local pat = "^[0-9]+"
+  local minbuf = 3 -- "+0x" (sign + hexadecimal tag)
+  -- this function is used to read trailing numbers (1e2, 0x1p2, etc)
+  local function readnum(checksign)
+   local _buffer = ""
+   local sign = ""
+   while true do
+    if len(self.bufferRead) == 0 then
+     local result, reason = readChunk()
+     if not result then
+      if reason then
+       return nil, reason
+      else -- eof
+       return #_buffer > 0 and (sign .. _buffer) or nil
+      end
+     end
+    end
+    if checksign then
+     local _sign = sub(self.bufferRead, 1, 1)
+     if _sign == "+" or _sign == "-" then
+      -- "eat" the sign (Rio Lua behaviour)
+      sign = sub(self.bufferRead, 1, 1)
+      self.bufferRead = sub(self.bufferRead, 2)
+     end
+     checksign = false
+    else
+     local x,y = string.find(self.bufferRead, pat)
+     if not x then
+      break
+     else
+      _buffer = _buffer .. sub(self.bufferRead, 1, y)
+      self.bufferRead = sub(self.bufferRead, y + 1)
+     end
+    end
+   end
+   return #_buffer > 0 and (sign .. _buffer) or nil
+  end
+  while true do
+   if len(self.bufferRead) == 0 or len(self.bufferRead) < minbuf then
+    local result, reason = readChunk()
+    if not result then
+     if reason then
+      return nil, reason
+     else -- eof
+      return #buffer > 0 and tonumber(buffer) or nil
+     end
+    end
+   end
+   -- these ifs are here so we run the buffer check above
+   if first then
+    local sign = sub(self.bufferRead, 1, 1)
+    if sign == "+" or sign == "-" then
+     -- "eat" the sign (Rio Lua behaviour)
+     buffer = buffer .. sub(self.bufferRead, 1, 1)
+     self.bufferRead = sub(self.bufferRead, 2)
+    end
+    local hextag = sub(self.bufferRead, 1, 2)
+    if hextag == "0x" or hextag == "0X" then
+     pat = "^[0-9A-Fa-f]+"
+     -- "eat" the 0x, see https://gist.github.com/SoniEx2/570a363d81b743353151
+     buffer = buffer .. sub(self.bufferRead, 1, 2)
+     self.bufferRead = sub(self.bufferRead, 3)
+     hex = true
+    end
+    minbuf = 0
+    first = false
+   elseif decimal then
+    local sep = sub(self.bufferRead, 1, 1)
+    if sep == "." then
+     buffer = buffer .. sep
+     self.bufferRead = sub(self.bufferRead, 2)
+     local temp = readnum(false) -- no sign
+     if temp then
+      buffer = buffer .. temp
+     end
+    end
+    if not tonumber(buffer) then break end
+    decimal = false
+    last = true
+    minbuf = 1
+   elseif last then
+    local tag = sub(self.bufferRead, 1, 1)
+    if hex and (tag == "p" or tag == "P") then
+     local temp = sub(self.bufferRead, 1, 1)
+     self.bufferRead = sub(self.bufferRead, 2)
+     local temp2 = readnum(true) -- this eats the next sign if any
+     if temp2 then
+      buffer = buffer .. temp .. temp2
+     end
+    elseif tag == "e" or tag == "E" then
+     local temp = sub(self.bufferRead, 1, 1)
+     self.bufferRead = sub(self.bufferRead, 2)
+     local temp2 = readnum(true) -- this eats the next sign if any
+     if temp2 then
+      buffer = buffer .. temp .. temp2
+     end
+    end
+    break
+   else
+    local x,y = string.find(self.bufferRead, pat)
+    if not x then
+     minbuf = 1
+     decimal = true
+    else
+     buffer = buffer .. sub(self.bufferRead, 1, y)
+     self.bufferRead = sub(self.bufferRead, y + 1)
+    end
+   end
+  end
+  return tonumber(buffer)
+ end
+
+ local function readLine(chop)
+  local start = 1
+  while true do
+   local l = self.bufferRead:find("\n", start, true)
+   if l then
+    local result = self.bufferRead:sub(1, l + (chop and -1 or 0))
+    self.bufferRead = self.bufferRead:sub(l + 1)
+    return result
+   else
+    start = #self.bufferRead
+    local result, reason = readChunk()
+    if not result then
+     if reason then
+      return nil, reason
+     else -- eof
+      local result = #self.bufferRead > 0 and self.bufferRead or nil
+      self.bufferRead = ""
+      return result
+     end
+    end
+   end
+  end
+ end
+
+ local function readAll()
+  repeat
+   local result, reason = readChunk()
+   if not result and reason then
+    return nil, reason
+   end
+  until not result -- eof
+  local result = self.bufferRead
+  self.bufferRead = ""
+  return result
+ end
+
+ local function read(n, format)
+  if type(format) == "number" then
+   return readBytesOrChars(format)
+  else
+   if type(format) ~= "string" or unicode.sub(format, 1, 1) ~= "*" then
+    error("bad argument #" .. n .. " (invalid option)")
+   end
+   format = unicode.sub(format, 2, 2)
+   if format == "n" then
+    return readNumber()
+   elseif format == "l" then
+    return readLine(true)
+   elseif format == "L" then
+    return readLine(false)
+   elseif format == "a" then
+    return readAll()
+   else
+    error("bad argument #" .. n .. " (invalid format)")
+   end
+  end
+ end
+
+ if self.mode.w or self.mode.a then
+  self:flush()
+ end
+
+ local results = {}
+ local formats = table.pack(...)
+ if formats.n == 0 then
+  return readLine(true)
+ end
+ for i = 1, formats.n do
+  local result, reason = read(i, formats[i])
+  if result then
+   results[i] = result
+  elseif reason then
+   return nil, reason
+  end
+ end
+ return table.unpack(results, 1, formats.n)
+end
+
+function buffer:seek(whence, offset)
+ whence = tostring(whence or "cur")
+ assert(whence == "set" or whence == "cur" or whence == "end",
+  "bad argument #1 (set, cur or end expected, got " .. whence .. ")")
+ offset = offset or 0
+ checkArg(2, offset, "number")
+ assert(math.floor(offset) == offset, "bad argument #2 (not an integer)")
+
+ if self.mode.w or self.mode.a then
+  self:flush()
+ elseif whence == "cur" then
+  offset = offset - #self.bufferRead
+ end
+ local result, reason = self.stream:seek(whence, offset)
+ if result then
+  self.bufferRead = ""
+  return result
+ else
+  return nil, reason
+ end
+end
+
+function buffer:setvbuf(mode, size)
+ mode = mode or self.bufferMode
+ size = size or self.bufferSize
+
+ assert(mode == "no" or mode == "full" or mode == "line",
+  "bad argument #1 (no, full or line expected, got " .. tostring(mode) .. ")")
+ assert(mode == "no" or type(size) == "number",
+  "bad argument #2 (number expected, got " .. type(size) .. ")")
+
+ self.bufferMode = mode
+ self.bufferSize = size
+
+ return self.bufferMode, self.bufferSize
+end
+
+function buffer:getTimeout()
+ return self.readTimeout
+end
+
+function buffer:setTimeout(value)
+ self.readTimeout = tonumber(value)
+end
+
+function buffer:write(...)
+ if self.closed then
+  return nil, "bad file descriptor"
+ end
+ local args = table.pack(...)
+ for i = 1, args.n do
+  if type(args[i]) == "number" then
+   args[i] = tostring(args[i])
+  end
+  checkArg(i, args[i], "string")
+ end
+
+ for i = 1, args.n do
+  local arg = args[i]
+  local result, reason
+
+  if self.bufferMode == "full" then
+   if self.bufferSize - #self.bufferWrite < #arg then
+    result, reason = self:flush()
+    if not result then
+     return nil, reason
+    end
+   end
+   if #arg > self.bufferSize then
+    result, reason = self.stream:write(arg)
+   else
+    self.bufferWrite = self.bufferWrite .. arg
+    result = self
+   end
+
+  elseif self.bufferMode == "line" then
+   local l
+   repeat
+    local idx = arg:find("\n", (l or 0) + 1, true)
+    if idx then
+     l = idx
+    end
+   until not idx
+   if l or #arg > self.bufferSize then
+    result, reason = self:flush()
+    if not result then
+     return nil, reason
+    end
+   end
+   if l then
+    result, reason = self.stream:write(arg:sub(1, l))
+    if not result then
+     return nil, reason
+    end
+    arg = arg:sub(l + 1)
+   end
+   if #arg > self.bufferSize then
+    result, reason = self.stream:write(arg)
+   else
+    self.bufferWrite = self.bufferWrite .. arg
+    result = self
+   end
+
+  else -- self.bufferMode == "no"
+   result, reason = self.stream:write(arg)
+  end
+
+  if not result then
+   return nil, reason
+  end
+ end
+
+ return self
+end

module/fs.lua

@@ -32,37 +32,16 @@ for k,v in pairs({"makeDirectory","exists","isDirectory","list","lastModified","
 end
 
 local function fread(self,length)
- if length == "*a" then
-  length = math.huge
- end
- if type(length) == "number" then
-  local rstr, lstr = "", ""
-  repeat
-   lstr = fsmounts[self.fs].read(self.fid,math.min(2^16,length-rstr:len())) or ""
-   rstr = rstr .. lstr
-  until rstr:len() == length or lstr == ""
-  return rstr
- elseif type(length) == "string" then
-  local buf = ""
-  if length == "*l" then
-   length = "\n"
-  end
-  repeat
-   local rb = fsmounts[self.fs].read(self.fid,1) or ""
-   buf = buf .. rb
-  until buf:match(length) or rb == ""
-  return buf:match("(.*)"..length)
- end
  return fsmounts[self.fs].read(self.fid,length)
 end
 local function fwrite(self,data)
- fsmounts[self.fs].write(self.fid,data)
+ return fsmounts[self.fs].write(self.fid,data)
 end
 local function fseek(self,dist)
- fsmounts[self.fs].seek(self.fid,dist)
+ return fsmounts[self.fs].seek(self.fid,dist)
 end
 local function fclose(self)
- fsmounts[self.fs].close(self.fid)
+ return fsmounts[self.fs].close(self.fid)
 end
 
 function fs.open(path,mode) -- opens file *path* with mode *mode*

module/init.lua

@@ -1,12 +1,13 @@
 --#include "module/syslog.lua"
 --#include "module/sched.lua"
+--#include "module/buffer.lua"
 --#include "module/osutil.lua"
 --#include "module/fs.lua"
---#include "module/newio.lua"
+--#include "module/io.lua"
 --#include "module/devfs.lua"
 --#include "module/devfs/syslog.lua"
---#include "module/vt-task.lua"
 --#include "module/loadfile.lua"
+--#include "module/vt-task.lua"
 os.spawnfile("/boot/exec/init.lua")
 
 os.sched()

module/io.lua

@@ -1,7 +1,14 @@
 io = {}
+
+function io.open(path,mode)
+ local f,e = fs.open(path, mode)
+ if not f then return false, e end
+ return buffer.new(mode,f)
+end
+
 function io.input(fd)
  if type(fd) == "string" then
-  fd=fs.open(fd,"rb")
+  fd=io.open(fd,"rb")
  end
  if fd then
   os.setenv("STDIN",fd)
@@ -10,7 +17,7 @@ function io.input(fd)
 end
 function io.output(fd)
  if type(fd) == "string" then
-  fd=fs.open(fd,"wb")
+  fd=io.open(fd,"wb")
  end
  if fd then
   os.setenv("STDOUT",fd)
@@ -18,8 +25,6 @@ function io.output(fd)
  return os.getenv("STDOUT")
 end
 
-io.open = fs.open
-
 function io.read(...)
  return io.input():read()
 end

module/loadfile.lua

@@ -1,5 +1,5 @@
 function loadfile(p) -- reads file *p* and returns a function if possible
- local f = fs.open(p,"rb")
+ local f = io.open(p,"rb")
  local c = f:read("*a")
  f:close()
  return load(c,p,"t")
@@ -9,22 +9,23 @@ function runfile(p,...) -- runs file *p* with arbitrary arguments in the current
 end
 function os.spawnfile(p,n,...) -- spawns a new process from file *p* with name *n*, with arguments following *n*.
  local tA = {...}
- return os.spawn(function() computer.pushSignal("process_finished", os.pid(), pcall(loadfile(p), table.unpack(tA))) end,n or p)
+ 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.libs = {computer=computer,component=component}
+_G.package = {}
+package.loaded = {computer=computer,component=component,fs=fs}
 function require(f) -- searches for a library with name *f* and returns what the library returns, if possible
- if not _G.libs[f] then
+ if not package.loaded[f] then
   local lib = os.getenv("LIB") or "/boot/lib"
   for d in lib:gmatch("[^\n]+") do
    if fs.exists(d.."/"..f) then
-    _G.libs[f] = runfile(d.."/"..f)
+    package.loaded[f] = runfile(d.."/"..f)
    elseif fs.exists(d.."/"..f..".lua") then
-    _G.libs[f] = runfile(d.."/"..f..".lua")
+    package.loaded[f] = runfile(d.."/"..f..".lua")
    end
   end
  end
- if _G.libs[f] then
-  return _G.libs[f]
+ if package.loaded[f] then
+  return package.loaded[f]
  end
  error("library not found: "..f)
 end

module/vt-task.lua

@@ -31,7 +31,7 @@ function vtemu(gpua,scra) -- creates a process to handle the GPU and screen addr
    coroutine.yield()
   end
   local n = buf:find("\n")
-  r, buf = buf:sub(1,n-1), buf:sub(n+1)
+  r, buf = buf:sub(1,n), buf:sub(n+1)
   return r
  end
  return bread, write, function() io.write("\27[2J\27[H") end

service/getty.lua

@@ -1,4 +1,5 @@
 local gpus,screens,ttyn,pids = {}, {}, 0, {}
+local shell = require "shell"
 local function scan()
  local w,di = pcall(computer.getDeviceInfo)
  if w then
@@ -32,9 +33,9 @@ end
 
 local function spawnShell(fin,fout)
  io.input(fin)
- io.output(fout)
+ io.output(fout):setvbuf("no")
  print(_OSVERSION.." - "..tostring(math.floor(computer.totalMemory()/1024)).."K RAM")
- return os.spawnfile("/boot/exec/shell.lua")
+ return os.spawn(shell.interactive, "shell: "..tostring(fin))
 end
 
 local function allocate()