added disk driver

disk-driver.lua

@@ -0,0 +1,90 @@
+local diskDrive = peripheral.find("drive")
+local monitor = require("monitor-driver")
+local function getFilePath()
+    if diskDrive and diskDrive.isDiskPresent() then
+        local path = diskDrive.getMountPath()
+        if path then
+            return fs.combine(path, "data.tbl")
+        end
+    end
+    return nil
+end
+
+local function loadData()
+    local path = getFilePath()
+    if path and fs.exists(path) then
+        local file = fs.open(path, "r")
+        local content = file.readAll()
+        file.close()
+        local parsed
+        if content then
+            parsed = textutils.unserialize(content)
+        end
+        return parsed or {}
+    end
+    return {}
+end
+
+local function saveData(data)
+    local path = getFilePath()
+    if path then
+        local file = fs.open(path, "w")
+        file.write(textutils.serialize(data))
+        file.close()
+        return true
+    end
+    return false
+end
+
+local function generateGuid()
+    local template ='xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
+    return string.gsub(template, '[xy]', function (c)
+        local v = (c == 'x') and math.random(0, 0xf) or math.random(8, 0xb)
+        return string.format('%x', v)
+    end)
+end
+
+local function getValue(key)
+    local data = loadData()
+    for _, item in ipairs(data) do
+        if item.Key == key then
+            return item.Value
+        end
+    end
+    return nil
+end
+
+local function updateValue(key, value)
+    local data = loadData()
+    for _, item in ipairs(data) do
+        if item.Key == key then
+            item.Value = value
+            saveData(data)
+            return true
+        end
+    end
+    return false
+end
+
+local function writeValue(key, value)
+    local data = loadData()
+    local guid = generateGuid()
+    table.insert(data, { GeneratedGuid = guid, Key = key, Value = value })
+    saveData(data)
+    return guid
+end
+
+local function initialize()
+    monitor.writeLine("Initializing Data Storage...")
+    if diskDrive and diskDrive.isDiskPresent() then
+        monitor.writeLine("Disk detected. Initializing data storage.")
+        local path = getFilePath()
+        if path and not fs.exists(path) then
+            saveData({})
+        end
+        return true
+    end
+    return false
+end
+
+return { getValue = getValue, updateValue = updateValue, writeValue = writeValue, initialize = initialize }