From df86ebdf3820e8ff88c4a54515602dba3a5bfb04 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20N=C3=BCcke?= <florian@nuecke.de>
Date: Tue, 9 Dec 2014 13:49:33 +0100
Subject: [PATCH] Added flash.lua program to make programming EEPROMs a little
 more comfortable.

---
 .../opencomputers/loot/OpenOS/bin/flash.lua   | 55 +++++++++++++++++++
 .../li/cil/oc/server/component/EEPROM.scala   |  3 +-
 2 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 src/main/resources/assets/opencomputers/loot/OpenOS/bin/flash.lua

diff --git a/src/main/resources/assets/opencomputers/loot/OpenOS/bin/flash.lua b/src/main/resources/assets/opencomputers/loot/OpenOS/bin/flash.lua
new file mode 100644
index 000000000..bc6c304c6
--- /dev/null
+++ b/src/main/resources/assets/opencomputers/loot/OpenOS/bin/flash.lua
@@ -0,0 +1,55 @@
+local component = require("component")
+local shell = require("shell")
+
+local args, options = shell.parse(...)
+
+if #args < 1 and not options.l then
+  io.write("Usage: flash [-ql] [<bios.lua>] [label]\n")
+  io.write(" q: quiet mode, don't ask questions.\n")
+  io.write(" l: print current contents of installed EEPROM.")
+  return
+end
+
+if options.l then
+  io.write(component.eeprom.get())
+  return
+end
+
+local file = assert(io.open(args[1], "rb"))
+
+if not options.q then
+  io.write("Insert the EEPROM you would like to flash.\n")
+  io.write("When ready to write, type `y` to confirm.\n")
+  repeat
+    local response = io.read()
+  until response and response:lower():sub(1, 1) == "y"
+  io.write("Beginning to flash EEPROM.")
+end
+
+local eeprom = component.eeprom
+
+if not options.q then
+  io.write("Beginning to flash EEPROM " .. eeprom.address .. ".\n")
+  io.write("Please do NOT power down or restart your computer during this operation!\n")
+end
+
+local bios = file:read("*a")
+file:close()
+
+eeprom.set(bios)
+
+local label = args[2]
+if not options.q and not label then
+  io.write("Enter new label for this EEPROM. Leave input blank to leave the label unchanged.\n")
+  label = io.read()
+end
+if label then
+  eeprom.setLabel(label)
+  if not options.q then
+    io.write("Set label to '" .. eeprom.getLabel() .. "'.\n")
+  end
+end
+
+if not options.q then
+  io.write("All done! You can remove the EEPROM and re-insert the previous one now.\n")
+end
\ No newline at end of file
diff --git a/src/main/scala/li/cil/oc/server/component/EEPROM.scala b/src/main/scala/li/cil/oc/server/component/EEPROM.scala
index adb30e230..7d668d125 100644
--- a/src/main/scala/li/cil/oc/server/component/EEPROM.scala
+++ b/src/main/scala/li/cil/oc/server/component/EEPROM.scala
@@ -41,7 +41,8 @@ class EEPROM extends prefab.ManagedEnvironment {
 
   @Callback(doc = """function(data:string) -- Set the label of the EEPROM.""")
   def setLabel(context: Context, args: Arguments): Array[AnyRef] = {
-    label = args.checkString(0).take(16)
+    label = args.optString(0, "EEPROM").trim.take(16)
+    if (label.length == 0) label = "EEPROM"
     null
   }