delay load, term, and grep fixed

Delayload is lighter weight now. Improving method reuse and reducing boot costs about about 1.5k

term had some crashes and improper behavior. This fixed tab complete for 5.3 lua archs, term palette use, and missing tab complete hints. Term blinking now also supports setCursorBlink(false).

grep had a bug where patterns looking for start-of-line text would find in-line matches as well.

src/main/resources/assets/opencomputers/loot/OpenOS/bin/grep.lua

@@ -279,11 +279,11 @@ local function test(m,p)
       write(':', COLON_COLOR)
       needs_line_num = nil
     end
-    local p=m_only and '' or m.line:sub(last_index,(i or 0)-1)
+    local s=m_only and '' or m.line:sub(last_index,(i or 0)-1)
     local g=i and m.line:sub(i,j) or ''
-    if i==1 then g=trim_front(g) elseif last_index==1 then p=trim_front(p) end
-    if j==slen then g=trim_back(g) elseif not i then p=trim_back(p) end
-    write(p)
+    if i==1 then g=trim_front(g) elseif last_index==1 then s=trim_front(s) end
+    if j==slen then g=trim_back(g) elseif not i then s=trim_back(s) end
+    write(s)
     write(g, MATCH_COLOR)
     empty_line = false
     last_index = (j or slen)+1
@@ -291,7 +291,7 @@ local function test(m,p)
       write("\n")
       empty_line = true
       needs_filename, needs_line_num = include_filename, print_line_num
-    end
+    elseif p:find("^^") then break end
   end
   if not empty_line then write("\n") end
 end

src/main/resources/assets/opencomputers/loot/OpenOS/bin/sh.lua

@@ -30,6 +30,7 @@ if #args == 0 and (io.stdin.tty or options.i) and not options.c then
       local foreground = gpu.setForeground(0xFF0000)
       term.write(sh.expand(os.getenv("PS1") or "$ "))
       gpu.setForeground(foreground)
+      term.setCursorBlink(true)
       local command = term.read(history, nil, sh.hintHandler)
       if not command then
         io.write("exit\n")

src/main/resources/assets/opencomputers/loot/OpenOS/lib/package.lua

@@ -58,45 +58,18 @@ local function preloadSearcher(module)
   end
 end
 
-local function delay_index(tbl,key)
-  local z = getmetatable(tbl)
-  local method = z.methods[tbl][key]
-  if method then
-    if not z.cache[tbl][key] then
-      local file = io.open(z.path,"r")
-      if file then
-        file:seek("set", method[1])
-        local loaded = load("return function"..file:read(method[2]), "=delayed-"..key,"t",z.env)
-        assert(loaded,"failed to load "..key)
-        z.cache[tbl][key] = loaded()
-        file:close()
-        --lazy_protect(key, z.cache[key])
-      end
-    end
-    return z.cache[tbl][key]
-  end
+local delay_data = {}
+local delay_tools = setmetatable({},{__mode="v"})
+
+package.delay_data = delay_data
+
+function delay_data.__index(tbl,key)
+  local lookup = delay_tools.lookup or loadfile("/lib/tools/delayLookup.lua")
+  delay_tools.lookup = lookup
+  return lookup(delay_data, tbl, key)
 end
-local function delay_newindex(tbl,key,value)
-  local z = getmetatable(tbl)
-  z.methods[tbl][key] = nil
-  rawset(tbl,key,value)
-end
-local function delay_pairs(tbl)
-  local set,k,v = {}
-  while true do
-    k,v = next(tbl,k)
-    if not k then break end
-    set[k] = v
-  end
-  local z = getmetatable(tbl)
-  for k in pairs(z.methods[tbl]) do
-    if not set[k] then
-      set[k] = function(...)return delay_index(tbl,k)(...)end
-    end
-  end
-  return pairs(set)
-end
-local weak_cache = setmetatable({},{__mode="v"})
+delay_data.__pairs = delay_data.__index -- nil key acts like pairs
+
 function delaySearcher(module)
   if not delayed[module] then
     return "\tno field package.delayed['" .. module .. "']"
@@ -105,8 +78,9 @@ function delaySearcher(module)
   if not filepath then
     return reason
   end
-  weak_cache.parser = weak_cache.parser or loadfile("/lib/tools/delayParse.lua")
-  local loader, reason = weak_cache.parser(filepath,delay_index,delay_newindex,delay_pairs)
+  local parser = delay_tools.parser or loadfile("/lib/tools/delayParse.lua")
+  delay_tools.parser = parser
+  local loader, reason = parser(filepath,delay_data)
   return loader, reason
 end
 

src/main/resources/assets/opencomputers/loot/OpenOS/lib/term.lua

@@ -54,38 +54,52 @@ function term.isAvailable(w)
   return w and not not (w.gpu and w.screen)
 end
 
-function term.internal.pull(input, c, off, p, ...)
-  local w=W()
+function term.internal.pull(input, c, off, t, ...)
+  t=t or math.huge
+  if t < 0 then return end
+  local w,unpack=W(),table.unpack
   local d,h,dx,dy,x,y=term.getViewport(w)
   local out = (x<1 or x>d or y<1 or y>h)
-  if not w.blink or (not input and out) or type(p) == "number" then
-    return event.pull(p,...)
-  end
-  local gpu=w.gpu
-  if out then
+  if input and out then
     input:move(0)
     y=w.y
     input:scroll()
   end
   x,y=w.x+dx,w.y+dy
-  c=c or {gpu.getBackground(),gpu.getForeground(),gpu.get(x,y)}
-  if not off then
-    gpu.setForeground(c[1])
-    gpu.setBackground(c[2])
-  end
-  gpu.set(x,y,c[3])
-  gpu.setForeground(c[2])
-  gpu.setBackground(c[1])
-  local a={pcall(event.pull,0.5,p,...)}
-  if #a>1 then
+  local gpu
+
+  if input or not out then
+    gpu=w.gpu
+    local sf,sb=gpu.setForeground,gpu.setBackground
+    c=c or {{gpu.getBackground()},{gpu.getForeground()},gpu.get(x,y)}
+    local c11,c12 = unpack(c[1])
+    local c21,c22 = unpack(c[2])
+    if not off then
+      sf(c11,c12)
+      sb(c21,c22)
+    end
     gpu.set(x,y,c[3])
-    return select(2,table.unpack(a))
+    sb(c11,c12)
+    sf(c21,c22)
   end
-  return term.internal.pull(input,c,not off,p,...)
+
+  local a={pcall(event.pull,math.min(t,0.5),...)}
+
+  if #a>1 or t<.5 then
+    if gpu then
+      gpu.set(x,y,c[3])
+    end
+    return select(2,unpack(a))
+  end
+  local blinking = w.blink
+  if input then blinking = input.blink end
+  return term.internal.pull(input,c,blinking and not off,t-0.5,...)
 end
 
-function term.pull(...)
-  return term.internal.pull(nil,nil,nil,...)
+function term.pull(p,...)
+  local a,t = {p,...}
+  if type(p) == "number" then t = table.remove(a,1) end
+  return term.internal.pull(nil,nil,nil,t,table.unpack(a))
 end
 
 function term.read(history,dobreak,hintHandler,pwchar,filter)
@@ -202,10 +216,11 @@ function term.readKeyboard(ops)
   local filter = ops.filter and function(i) return term.internal.filter(ops.filter,i) end or term.internal.nop
   local pwchar = ops.pwchar and function(i) return term.internal.mask(ops.pwchar,i) end or term.internal.nop
   local history,db,hints={list=ops,index=0},ops.dobreak,{handler=ops.hintHandler}
-  term.setCursorBlink(true)
   local w=W()
   local draw=io.stdin.tty and term.drawText or term.internal.nop
   local input={w=w,promptx=w.x,prompty=w.y,index=0,data="",mask=pwchar}
+  input.blink = ops.blink
+  if input.blink == nil then input.blink = w.blink end
   if ops.nowrap then
     term.internal.build_horizontal_reader(input)
   else
@@ -350,6 +365,10 @@ function term.setCursorBlink(enabled)
   W().blink=enabled
 end
 
+function term.getCursorBlink()
+  return W().blink
+end
+
 function term.bind(gpu, screen, kb, window)
   window = window or W()
   window.gpu = gpu or window.gpu
@@ -480,7 +499,7 @@ function --[[@delayloaded-start@]] term.internal.tab(input,hints)
     hints.cache.i=-1
   end
   local c=hints.cache
-  c.i=(c.i+1)%#c
+  c.i=(c.i+1)%math.max(#c,1)
   local next=c[c.i+1]
   if next then
     local tail = unicode.wlen(input.data) - input.index - 1

src/main/resources/assets/opencomputers/loot/OpenOS/lib/tools/delayLookup.lua

@@ -0,0 +1,33 @@
+local data,tbl,key = ...
+local z = data[tbl]
+
+if key then -- index
+  local method = z.methods[key]
+  local cache = z.cache[key]
+  if method and not cache then
+    local file = io.open(z.path,"r")
+    if file then
+      file:seek("set", method[1])
+      local loaded = load("return function"..file:read(method[2]), "=delayed-"..key,"t",z.env)
+      file:close()
+      assert(loaded,"failed to load "..key)
+      cache = loaded()
+      --lazy_protect(key, cache)
+      z.cache[key] = cache
+    end
+  end
+  return cache
+else -- pairs
+  local set,k,v = {}
+  while true do
+    k,v = next(tbl,k)
+    if not k then break end
+    set[k] = v
+  end
+  for k in pairs(z.methods) do
+    if not set[k] then
+      set[k] = function(...)return tbl[k](...)end
+    end
+  end
+  return pairs(set)
+end

src/main/resources/assets/opencomputers/loot/OpenOS/lib/tools/delayParse.lua

@@ -1,4 +1,4 @@
-local filepath,delay_index,delay_newindex,delay_pairs = ...
+local filepath,delay_data = ...
 local file, reason = io.open(filepath, "r")
 if not file then
   return reason
@@ -45,23 +45,20 @@ local library, local_env = loader()
 if library then
   local_env = local_env or {}
   local_env[lib_name] = library
-  local mt =
-  {
-    methods={},
-    cache={},
-    env=setmetatable(local_env, {__index=_G}),
-    path=filepath,
-    __pairs=delay_pairs,
-    __index=delay_index,
-    __newindex=delay_newindex,
-  }
+
+  local env = setmetatable(local_env, {__index=_G})
   
   for path,pack in pairs(methods) do
     local target = library
     for name in path:gmatch("[^%.]+") do target = target[name] end
-    mt.methods[target]=pack
-    mt.cache[target]={}
-    setmetatable(target, mt)
+    delay_data[target] =
+    {
+      methods = pack,
+      cache = {},
+      env = env,
+      path = filepath
+    }
+    setmetatable(target, delay_data)
   end
 
   return function()return library end, filepath