some fixes learned from btm for term, grep, and devfs

using buffers for term stream string (used in devfs)
simulate enter key and split clipboards on multiline paste
delay proxy calls to eeprom until actually using /dev/eeprom
all reads on /dev/null (returns nil)
fix grep using ^

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

@@ -291,7 +291,7 @@ local function test(m,p)
       write("\n")
       empty_line = true
       needs_filename, needs_line_num = include_filename, print_line_num
-    elseif p:find("^^") then break end
+    elseif p:find("^^") and not plain then p="^$" end
   end
   if not empty_line then write("\n") end
 end

src/main/resources/assets/opencomputers/loot/openos/boot/10_devfs.lua

@@ -1,8 +1,20 @@
 require("filesystem").mount(
 setmetatable({
-  isReadOnly = function()return false end,
-  address = require("uuid").next()
+  address = "f5501a9b-9c23-1e7a-4afe-4b65eed9b88a"
 },
 {
-  __index=function(tbl,key)return require("devfs")[key]end
+  __index=function(tbl,key)
+    local pass
+    local passthrough = function() return pass end
+    if key == "getLabel" then
+      pass = "devfs"
+    elseif key == "spaceTotal" or key == "spaceUsed" then
+      pass = 0
+    elseif key == "isReadOnly" then
+      pass = false
+    else
+      return require("devfs")[key]
+    end
+    return passthrough
+  end
 }), "/dev")

src/main/resources/assets/opencomputers/loot/openos/lib/devfs.lua

@@ -191,22 +191,10 @@ local devfs = new_devfs_dir()
 
 local bfd = "bad file descriptor"
 
-function devfs.getLabel()
-  return "devfs"
-end
-
 function devfs.setLabel(value)
   error("drive does not support labeling")
 end
 
-function devfs.spaceTotal()
-  return 0
-end
-
-function devfs.spaceUsed()
-  return 0
-end
-
 function devfs.makeDirectory(path)
   return false, "to create dirs in devfs use devfs.create"
 end
@@ -284,9 +272,7 @@ end
 
 devfs.create("null", devfs_load("null"))
 devfs.create("random", devfs_load("random"))
-if comp.isAvailable("eeprom") then
-  devfs.create("eeprom", devfs_load("eeprom"))
-  devfs.create("eeprom-data", devfs_load("eeprom-data"))
-end
+devfs.create("eeprom", devfs_load("eeprom"))
+devfs.create("eeprom-data", devfs_load("eeprom-data"))
 
 return devfs

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

@@ -261,7 +261,7 @@ function term.readKeyboard(ops)
       if name == "touch" or name == "drag" then
         term.internal.onTouch(input,char,code)
       elseif name == "clipboard" then
-        c = char
+        c = term.internal.clipboard(char)
         hints.cache = nil
       elseif name == "key_down" then
         hints.cache = nil
@@ -634,4 +634,17 @@ function --[[@delayloaded-start@]] term.getGlobalArea(window)
   return dx+1,dy+1,w,h
 end --[[@delayloaded-end@]]
 
+function --[[@delayloaded-start@]] term.internal.clipboard(char)
+  local first_line, end_index = char:find("\13?\10")
+  if first_line then
+    local after = char:sub(end_index + 1)
+    if after ~= "" then
+      require("computer").pushSignal("key_down", term.keyboard(), 13, 28)
+      require("computer").pushSignal("clipboard", term.keyboard(), after)
+    end
+    char = char:sub(1, first_line - 1)
+  end
+  return char
+end --[[@delayloaded-end@]] 
+
 return term, local_env

src/main/resources/assets/opencomputers/loot/openos/lib/text.lua

@@ -334,7 +334,7 @@ function --[[@delayloaded-start@]] text.internal.reader(txt)
     end,
   }
 
-  return reader
+  return require("buffer").new("r", reader)
 end --[[@delayloaded-end@]]
 
 function --[[@delayloaded-start@]] text.internal.writer(ostream, append_txt)
@@ -374,7 +374,7 @@ function --[[@delayloaded-start@]] text.internal.writer(ostream, append_txt)
     end,
   }
 
-  return writer
+  return require("buffer").new("w", writer)
 end --[[@delayloaded-end@]]
 
 return text, local_env

src/main/resources/assets/opencomputers/loot/openos/lib/tools/devfs/eeprom-data.lua

@@ -1,10 +1,6 @@
 local comp = require("component")
 local text = require("text")
 
-if not comp.isAvailable("eeprom") then
-  return nil
-end
-
 return
 {
   open = function(mode)

src/main/resources/assets/opencomputers/loot/openos/lib/tools/devfs/eeprom.lua

@@ -1,10 +1,6 @@
 local comp = require("component")
 local text = require("text")
 
-if not comp.isAvailable("eeprom") then
-  return nil
-end
-
 return
 {
   open = function(mode)

src/main/resources/assets/opencomputers/loot/openos/lib/tools/devfs/null.lua

@@ -1,11 +1,9 @@
 return
 {
   open = function(mode)
-    if not mode or not mode:match("[wa]") then
-      return nil, "write only"
-    end
     return
     {
+      read = function() end,
       write = function() end
     }
   end