refactor(rom): 重写list.lua为rc.shell并添加shell初始化逻辑

将原有的list.lua程序完全重构为rc.shell，实现以下改进：
1. 添加shell初始化流程，包括运行startup脚本
2. 实现命令别名和自动补全功能
3. 添加交互式shell循环和历史记录功能

data/computercraft/lua/rom/programs/list.lua

@@ -1,154 +1,79 @@
--- list
-
-local args = {...}
+-- rc.shell
 
+local rc = require("rc")
 local fs = require("fs")
+local term = require("term")
 local shell = require("shell")
 local colors = require("colors")
-local settings = require("settings")
+local thread = require("rc.thread")
 local textutils = require("textutils")
-local term = require("term")
 
-if #args == 0 then args[1] = shell.dir() end
+if os.version then
+  textutils.coloredPrint(colors.yellow, os.version(), colors.white)
+else
+  textutils.coloredPrint(colors.yellow, rc.version(), colors.white)
+end
 
-local show_hidden = settings.get("list.show_hidden")
-local show_details = false
+thread.vars().parentShell = thread.id()
+shell.init(_ENV)
 
--- 检查是否有显示详细信息的参数
-for i=1, #args, 1 do
-  if args[i] == "-l" then
-    show_details = true
-    table.remove(args, i)
-    break
+if not shell.__has_run_startup then
+  shell.__has_run_startup = true
+  if fs.exists("/startup.lua") then
+    local ok, err = pcall(dofile, "/startup.lua")
+    if not ok and err then
+      io.stderr:write(err, "\n")
+    end
+  end
+
+  if fs.exists("/startup") and fs.isDir("/startup") then
+    local files = fs.list("/startup/")
+    table.sort(files)
+
+    for f=1, #files, 1 do
+      local ok, err = pcall(dofile, "/startup/"..files[f])
+      if not ok and err then
+        io.stderr:write(err, "\n")
+      end
+    end
   end
 end
 
--- 如果没有参数了，默认为当前目录
-if #args == 0 then args[1] = shell.dir() end
+local aliases = {
+  background = "bg",
+  clr = "clear",
+  cp = "copy",
+  dir = "list",
+  foreground = "fg",
+  mv = "move",
+  rm = "delete",
+  rs = "redstone",
+  sh = "shell",
+  ps = "threads"
+}
 
--- 获取文件大小的格式化函数
-local function format_size(size)
-  if size < 1024 then
-    return size .. " B"
-  elseif size < 1024 * 1024 then
-    return string.format("%.1f KB", size / 1024)
-  else
-    return string.format("%.1f MB", size / (1024 * 1024))
-  end
+for k, v in pairs(aliases) do
+  shell.setAlias(k, v)
 end
 
--- 获取文件类型和对应的颜色
-local function get_file_info(filename, full_path)
-  local is_dir = fs.isDir(full_path)
-  local color, indicator
-  
-  if is_dir then
-    color = colors.green
-    indicator = "/"
-  else
-    -- 根据文件扩展名设置不同颜色
-    local ext = filename:match("%.(%w+)$") or ""
-    ext = ext:lower()
-    
-    if ext == "lua" then
-      color = colors.cyan
-    elseif ext == "txt" or ext == "md" or ext == "hlp" then
-      color = colors.white
-    elseif ext == "png" or ext == "jpg" or ext == "gif" then
-      color = colors.magenta
-    else
-      color = colors.lightGray
-    end
-    indicator = ""
-  end
-  
-  return color, indicator
+local completions = "/rc/completions"
+for _, prog in ipairs(fs.list(completions)) do
+  dofile(fs.combine(completions, prog))
 end
 
-local function list_dir(dir)
-  if not fs.exists(dir) then
-    error("\"" .. dir .. "\" that directory does not exist", 0)
-  elseif not fs.isDir(dir) then
-    error("\"" .. dir .. "\" is not a directory", 0)
+local history = {}
+while true do
+  term.setTextColor(colors.yellow)
+  term.setBackgroundColor(colors.black)
+  rc.write(colors.yellow.."$"..shell.dir()..colors.green.." >>> ")
+  term.setTextColor(colors.white)
+
+  local text = term.read(nil, history, shell.complete)
+  if #text > 0 then
+    history[#history+1] = text
+    local ok, err = shell.run(text)
+    if not ok and err then
+      io.stderr:write(err, "\n")
     end
-
-  local raw_files = fs.list(dir)
-  local items = {}
-
-  -- 收集文件信息
-  for i=1, #raw_files, 1 do
-    local name = raw_files[i]
-    local full = fs.combine(dir, name)
-    
-    if name:sub(1,1) ~= "." or show_hidden then
-      local color, indicator = get_file_info(name, full)
-      local size = ""
-      
-      if show_details and not fs.isDir(full) then
-        local size_bytes = fs.getSize(full)
-        size = format_size(size_bytes)
-      end
-      
-      table.insert(items, {
-        name = name,
-        color = color,
-        indicator = indicator,
-        size = size,
-        is_dir = fs.isDir(full)
-      })
-    end
-  end
-  
-  -- 先排序目录，再排序文件
-  table.sort(items, function(a, b)
-    if a.is_dir and not b.is_dir then return true end
-    if not a.is_dir and b.is_dir then return false end
-    return a.name < b.name
-  end)
-
-  -- 显示标题
-  local w = term.getSize()
-  local title = dir
-  textutils.coloredPrint(colors.yellow, string.rep("=", w), colors.white)
-  textutils.coloredPrint(colors.yellow, title, colors.white)
-  textutils.coloredPrint(colors.yellow, string.rep("=", w), colors.white)
-  
-  -- 显示文件列表
-  local display_items = {}
-  local max_name_len = 0
-  
-  -- 计算最长文件名长度
-  for _, item in ipairs(items) do
-    local display_name = item.name .. item.indicator
-    max_name_len = math.max(max_name_len, #display_name)
-  end
-  
-  -- 创建格式化的显示项
-  for _, item in ipairs(items) do
-    local display_name = item.name .. item.indicator
-    if show_details then
-      local padding = string.rep(" ", max_name_len - #display_name + 2)
-      display_name = display_name .. padding .. item.size
-    end
-    table.insert(display_items, {item.color, display_name, colors.white})
-  end
-  
-  -- 使用分页表格显示
-  textutils.pagedTabulate(unpack(display_items))
-  
-  -- 显示统计信息
-  textutils.coloredPrint(colors.yellow, "\nTotal: " .. #items .. " items", colors.white)
-  
-  -- 显示提示
-  if not show_details then
-    textutils.coloredPrint(colors.lightGray, "Type 'list -l' for detailed information", colors.white)
-  end
-  textutils.coloredPrint(colors.yellow, string.rep("=", w), colors.white)
-end
-
-for i=1, #args, 1 do
-  list_dir(args[i])
-  if i < #args then
-    print() -- 不同目录之间添加空行
   end
 end