A bit of terminal polish

code/apps/app-luashell.lua

@@ -32,45 +32,61 @@ event.listen("k.procdie", function (_, _, pid)
  end
 end)
 
-TERM.write("KittenOS NEO Lua Shell\r\n")
+TERM.write(([[
+    KittenOS NEO Shell Usage Notes
 
-print = function (...)
- local n = {}
- local s = {...}
- for i = 1, #s do
-  local v = s[i]
-  if v == nil then
-   v = "nil"
+Prefixing = is an alias for 'return '.
+io.read(): Reads a line.
+print: 'print with table dumping' impl.
+TERM: Your terminal. (see us-termi doc.)
+os.execute(): launch terminal apps!
+tries '*', 'sys-t-*', 'svc-t-*', 'app-*'
+ example: os.execute("luashell")
+os.exit(): quit the shell
+=listCmdApps(): -t- (terminal) apps
+event: useful for setting up listeners
+ without breaking shell functionality
+]]):gsub("[\r]*\n", "\r\n"))
+
+function listCmdApps()
+ local apps = {}
+ for _, v in ipairs(neo.listApps()) do
+  if v:sub(4, 6) == "-t-" then
+   table.insert(apps, v)
   end
-  table.insert(n, tostring(v))
  end
- TERM.write(table.concat(n, " ") .. "\r\n")
+ return apps
 end
 
-run = function (x, ...)
- local subPid = neo.executeAsync(x, ...)
- if not subPid then
-  subPid = neo.executeAsync("sys-t-" .. x, TERM.id, ...)
- end
- if not subPid then
-  subPid = neo.executeAsync("svc-t-" .. x, TERM.id, ...)
- end
- if not subPid then
-  subPid = neo.executeAsync("app-" .. x, TERM.id, ...)
- end
- if not subPid then
-  error("cannot find " .. x)
- end
- while true do
-  local e = {event.pull()}
-  if e[1] == "k.procdie" then
-   if e[3] == subPid then
-    return
-   end
+local function vPrint(slike, ...)
+ local s = {...}
+ if #s > 1 then
+  for i = 1, #s do
+   if i ~= 1 then TERM.write("\t") end
+   vPrint(slike, s[i])
   end
+ elseif slike and type(s[1]) == "string" then
+  TERM.write("\"" .. s[1] .. "\"")
+ elseif type(s[1]) ~= "table" then
+  TERM.write(tostring(s[1]))
+ else
+  TERM.write("{")
+  for k, v in pairs(s[1]) do
+   TERM.write("[")
+   vPrint(true, k)
+   TERM.write("] = ")
+   vPrint(true, v)
+   TERM.write(", ")
+  end
+  TERM.write("}")
  end
 end
 
+print = function (...)
+ vPrint(false, ...)
+ TERM.write("\r\n")
+end
+
 local ioBuffer = ""
 
 io = {
@@ -98,10 +114,34 @@ os = setmetatable({}, {
  __index = originalOS
 })
 
-os.exit = function ()
+function os.exit()
  alive = false
 end
 
+function os.execute(x, ...)
+ local subPid = neo.executeAsync(x, TERM.id, ...)
+ if not subPid then
+  subPid = neo.executeAsync("sys-t-" .. x, TERM.id, ...)
+ end
+ if not subPid then
+  subPid = neo.executeAsync("svc-t-" .. x, TERM.id, ...)
+ end
+ if not subPid then
+  subPid = neo.executeAsync("app-" .. x, TERM.id, ...)
+ end
+ if not subPid then
+  error("cannot find " .. x)
+ end
+ while true do
+  local e = {event.pull()}
+  if e[1] == "k.procdie" then
+   if e[3] == subPid then
+    return
+   end
+  end
+ end
+end
+
 while alive do
  TERM.write("> ")
  local code = io.read()

code/apps/svc-t.lua

@@ -127,6 +127,10 @@ local function writeData(data)
   local char = unicode.sub(data, 1, 1)
   data = unicode.sub(data, 2)
   -- handle character
+  if char == "\t" then
+   -- not ideal, but allowed
+   char = " "
+  end
   if char == "\r" then
    conCX = 1
   elseif char == "\n" then
@@ -254,21 +258,45 @@ do
  end
 end
 
+local control = false
+
 local function key(a, c)
+ if control then
+  if e[5] == 203 and conW > 8 then
+   setSize(conW - 1, #console)
+   return
+  elseif e[5] == 200 and #console > 1 then
+   setSize(conW, #console - 1)
+   return
+  elseif e[5] == 205 then
+   setSize(conW + 1, #console)
+   return
+  elseif e[5] == 208 then
+   setSize(conW, #console + 1)
+   return
+  end
+ end
+ -- so with the reserved ones dealt with...
  if not leText then
+  -- Line Editing not active.
+  -- For now support a bare minimum.
   for _, v in pairs(sendSigs) do
-   if a == "\r" then
+   if control then
+    if a == 99 then
+     v("telnet", "\xFF\xF4")
+    end
+   elseif a == "\r" then
     v("data", "\r\n")
    elseif a then
     v("data", a)
    end
   end
- else
-  -- Line Editing active
+ elseif not control then
+  -- Line Editing active and control isn't involved
   if c == 200 or c == 208 then
    -- History cursor up (history down)
    leText = leHistory[#leHistory]
-   leCX = unicode.len(leText)
+   leCX = unicode.len(leText) + 1
    if c == 208 then
     cycleHistoryUp()
    else
@@ -296,7 +324,6 @@ local function key(a, c)
  end
 end
 
-local control = false
 while not closeNow do
  local e = {coroutine.yield()}
  if e[1] == "k.procdie" then
@@ -319,18 +346,8 @@ while not closeNow do
    if e[5] == 29 or e[5] == 157 then
     control = e[6]
    elseif e[6] then
-    if not control then
-     key(e[4] ~= 0 and unicode.char(e[4]), e[5])
-     draw(#console + 1)
-    elseif e[5] == 203 and sW > 8 then
-     setSize(conW - 1, #console)
-    elseif e[5] == 200 and #console > 1 then
-     setSize(conW, #console - 1)
-    elseif e[5] == 205 then
-     setSize(conW + 1, #console)
-    elseif e[5] == 208 then
-     setSize(conW, #console + 1)
-    end
+    key(e[4] ~= 0 and unicode.char(e[4]), e[5])
+    draw(#console + 1)
    end
   elseif e[3] == "line" then
    draw(e[4])