diff --git a/classes/beastfile.lua b/classes/beastfile.lua
new file mode 100644
index 0000000..b64663b
--- /dev/null
+++ b/classes/beastfile.lua
@@ -0,0 +1,14 @@
+local BeastFile = Object:extend()
+local DataList = require "classes.datalist"
+
+function BeastFile:new(folder, name)
+    self.filepath = folder .. "/" .. name
+    print("Loading " .. self.filepath)
+    self.datas = DataList()
+end
+
+function BeastFile:prepareJson()
+    return self.datas:prepareJson()
+end
+
+return BeastFile
\ No newline at end of file
diff --git a/classes/datalist.lua b/classes/datalist.lua
new file mode 100644
index 0000000..dab8d74
--- /dev/null
+++ b/classes/datalist.lua
@@ -0,0 +1,51 @@
+local Data = Object:extend()
+local DataList = Object:extend()
+
+function Data.fromLine(line)
+    line = utils.removeComment(line)
+    if (#line == 0) then
+        return nil
+    end
+    local command = utils.split(line, "|")
+    local datas = utils.split(utils.trim(command[1]), ";")
+    local args = {}
+    name = utils.trim(datas[1])
+    for i, v in ipairs(datas) do
+        if (i > 1) then
+            table.insert(utils.trim(v))
+        end
+    end
+    local level = 0
+    if (command[2] ~= nil)  then
+        levelString = utils.trim(command[2]);
+        level = tonumber(levelString) or 0
+    end
+    return Data(name, args, level)
+end
+
+function Data:new(name, arguments, level)
+    self.name = name
+    self.arguments = arguments
+    self.level = level
+end
+
+function DataList:new()
+    self.list = {}
+    for key, value in pairs(commands.getDefaults()) do
+        table.insert(self.list, Data(key, value, 0))
+    end
+end
+
+function DataList:addLine(line)
+    table.insert(self.list, Data.line(line))
+end
+
+function DataList:reduce()
+    --TODO
+end
+
+function DataList:prepareJson()
+    return self.list
+end
+
+return DataList
\ No newline at end of file
diff --git a/classes/folderloader.lua b/classes/folderloader.lua
index 93cf3c7..5ac953f 100644
--- a/classes/folderloader.lua
+++ b/classes/folderloader.lua
@@ -1,4 +1,5 @@
 local FolderLoader = Object:extend()
+local BeastFile = require "classes.beastfile"
 
 function FolderLoader.getAllDatas(value)
     local folderLoader = FolderLoader(value)
@@ -12,13 +13,27 @@ function FolderLoader:new(value)
     self.data.nom = value.nom
     self.data.list = {}
 
+    self.files = {}
+
     for _, filename in ipairs(utils.scandir(self.folder)) do 
-        print(filename)
+        local file = utils.split(filename, ".", true)
+        if (file[2] == "beast") then
+            table.insert(self.files, BeastFile(self.folder, filename))
+        else
+            print("[WARNING] Unknown extension " .. file[2] .. " for " .. filename)
+        end
+    end
+end
+
+function FolderLoader:prepareJson()
+    for _, file in ipairs(self.files) do
+        table.insert(self.data.list, file:prepareJson())
     end
 end
 
 
 function FolderLoader:getDatas()
+    self:prepareJson()
     return self.data
 end
 
diff --git a/libs/commands.lua b/libs/commands.lua
new file mode 100644
index 0000000..294bb78
--- /dev/null
+++ b/libs/commands.lua
@@ -0,0 +1,45 @@
+local struct = require "struct"
+local commands = {}
+local defaults = {}
+
+local functions = {}
+
+print("Compilation des commandes")
+
+local function addCommands(command, parent, default)
+    commands[command] = parent
+    if (default ~= nil) then
+        defaults[command] = default
+    end
+end
+
+local function addStatCommands(name, value)
+    addCommands(name .. ".base", name, value.default)
+    addCommands(name .. ".lvl", name, 0)
+    addCommands(name .. ".add", name, 0)
+    addCommands(name .. ".bonus", name, 0)
+end
+
+local function addListCommands(name, value)
+    addCommands(name, name)
+    addCommands(name .. ".replace", name)
+    addCommands(name .. ".reset", name)
+end
+
+for key, value in pairs(struct) do
+    if (value.dataType == "stat") then
+        addStatCommands(key, value)
+    elseif (value.dataType == "list") then
+        addListCommands(key, value)
+    elseif (value.dataType == "comp") then
+        addListCommands(key, value)
+    else
+        addCommands(key, key)
+    end
+end
+
+function functions.getDefaults()
+    return defaults
+end
+
+return functions
\ No newline at end of file
diff --git a/libs/init.lua b/libs/init.lua
index 7ab700a..a32612e 100644
--- a/libs/init.lua
+++ b/libs/init.lua
@@ -1,2 +1,3 @@
 utils = require "libs.utils"
-Object = require "libs.classic"
\ No newline at end of file
+Object = require "libs.classic"
+commands = require "libs.commands"
\ No newline at end of file
diff --git a/libs/split.lua b/libs/split.lua
new file mode 100644
index 0000000..63552b8
--- /dev/null
+++ b/libs/split.lua
@@ -0,0 +1,127 @@
+------------------------------------------------------------------
+--
+--  Author: Alexey Melnichuk <alexeymelnichuck@gmail.com>
+--
+--  Copyright (C) 2016 Alexey Melnichuk <alexeymelnichuck@gmail.com>
+--
+--  Licensed according to the included 'LICENSE' document
+--
+--  This file is part of lua-split library.
+--
+------------------------------------------------------------------
+
+---
+-- @usage
+-- split = require "split"
+-- lines = split(str, '\r?\n')
+-- key, val = split.first(str, '=', true)
+-- a,b,c,d = split.unpack(str, ':', true)
+
+local unpack = unpack or table.unpack
+
+local function is_match_empty(pat, plain)
+  return not not string.find('', pat, nil, plain)
+end
+
+local function split(str, sep, plain)
+  local b, res = 0, {}
+  sep = sep or '%s+'
+
+  assert(type(sep) == 'string')
+  assert(type(str) == 'string')
+
+  if #sep == 0 then
+    for i = 1, #str do
+      res[#res + 1] = string.sub(str, i, i)
+    end
+    return res
+  end
+
+  assert(not is_match_empty(sep, plain), 'delimiter can not match empty string')
+
+  while b <= #str do
+    local e, e2 = string.find(str, sep, b, plain)
+    if e then
+      res[#res + 1] = string.sub(str, b, e-1)
+      b = e2 + 1
+      if b > #str then res[#res + 1] = "" end
+    else
+      res[#res + 1] = string.sub(str, b)
+      break
+    end
+  end
+  return res
+end
+
+local function split_iter(str, sep, plain)
+  sep = sep or '%s+'
+
+  assert(type(sep) == 'string')
+  assert(type(str) == 'string')
+
+  if #sep == 0 then
+    local i = 0
+    return function()
+      i = i + 1
+      if i > #str then return end
+      return (string.sub(str, i, i))
+    end
+  end
+
+  assert(not is_match_empty(sep, plain), 'delimiter can not match empty string')
+
+  local b, eol = 0
+  return function()
+    if b > #str then
+      if eol then
+        eol = nil
+        return ""
+      end
+      return
+    end
+
+    local e, e2 = string.find(str, sep, b, plain)
+    if e then
+      local s = string.sub(str, b, e-1)
+      b = e2 + 1
+      if b > #str then eol = true end
+      return s
+    end
+
+    local s = string.sub(str, b)
+    b = #str + 1
+    return s
+  end
+end
+
+local function usplit(...) return unpack(split(...)) end
+
+local function split_first(str, sep, plain)
+  sep = sep or '%s+'
+
+  assert(type(sep) == 'string')
+  assert(type(str) == 'string')
+
+  if #sep == 0 then
+    return string.sub(str, 1, 1), string.sub(str, 2)
+  end
+
+  assert(not is_match_empty(sep, plain), 'delimiter can not match empty string')
+
+  local e, e2 = string.find(str, sep, nil, plain)
+  if e then
+    return string.sub(str, 1, e - 1), string.sub(str, e2 + 1)
+  end
+  return str
+end
+
+return setmetatable({
+  split      = split;
+  unpack     = usplit;
+  first      = split_first;
+  each       = split_iter;
+},{
+  __call = function(_, ...)
+    return split(...)
+  end
+})
\ No newline at end of file
diff --git a/struct.lua b/struct.lua
new file mode 100644
index 0000000..2316878
--- /dev/null
+++ b/struct.lua
@@ -0,0 +1,23 @@
+return {
+    name={contentType = "string"},
+    level={contentType = "number"},
+    atk= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    con= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    hab= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    int= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    sag= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    vol= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    cha= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    dis= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    rel= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    per= {dataType= "stat", modulo= 5, default= 50, max=255, min=10},
+    pv= {dataType= "stat", modulo= 1, default= 12, max=9999999, min=1},
+    pe= {dataType= "stat", modulo= 1, default= 12, max=9999999, min=1},
+    eclat= {dataType= "stat", modulo= 1, default= 10, max=200, min=1},
+    armurephy= {dataType= "stat", modulo= 1, default= 0, max=9999999, min=0},
+    armurepsy= {dataType= "stat", modulo= 1, default= 0, max=9999999, min=0},
+    armurespe= {dataType= "stat", modulo= 1, default= 0, max=9999999, min=0},
+    armes= {datatype= "list", args=2},
+    competences= {datatype= "comp"}, -- on va le gérer différemment comme du code lol sinon c'est trop relou
+    armes= {datatype= "list", args=1},
+}
\ No newline at end of file