mirror of
https://github.com/CCLeonOS/LeonOS.git
synced 2026-03-03 15:01:12 +00:00
Leonmmcoset
fb33b53b42
添加包管理器核心程序(pkg.lua)及相关支持文件 - 实现包安装、更新、移除、列表、搜索等功能 - 添加包元数据结构和本地存储管理 - 包含示例包和命令补全支持 - 更新系统版本至0.3.0
89 lines
2.3 KiB
Lua
89 lines
2.3 KiB
Lua
-- Calculator program calc.lua
|
||
local term = require("term")
|
||
local keys = require("keys")
|
||
local colors = require("colors")
|
||
|
||
-- Function to draw top bar
|
||
local function drawTopBar()
|
||
-- Get terminal size
|
||
local w, h = term.getSize()
|
||
|
||
-- Save cursor position
|
||
local cx, cy = term.getCursorPos()
|
||
|
||
-- Set top bar color
|
||
term.setTextColor(colors.yellow)
|
||
term.setBackgroundColor(colors.blue)
|
||
|
||
-- Move to top-left corner
|
||
term.setCursorPos(1, 1)
|
||
|
||
-- Draw top bar with centered title
|
||
local title = "=== LeonOS Calculator ==="
|
||
local padding = math.floor((w - #title) / 2)
|
||
term.write(string.rep(" ", padding) .. title .. string.rep(" ", padding))
|
||
|
||
-- Reset colors
|
||
term.setTextColor(colors.white)
|
||
term.setBackgroundColor(colors.black)
|
||
|
||
-- Restore cursor position
|
||
term.setCursorPos(cx, cy)
|
||
end
|
||
|
||
-- Clear screen and show UI
|
||
term.clear()
|
||
drawTopBar()
|
||
|
||
-- Move cursor to below top bar and show instructions
|
||
term.setCursorPos(1, 3)
|
||
print("Enter an expression, press Enter to calculate (type 'q' to quit)")
|
||
print("Supports +, -, *, /, ^(exponent), %(modulus), and parentheses")
|
||
print("---------------------------")
|
||
|
||
while true do
|
||
-- Show prompt
|
||
io.write("> ")
|
||
local input = io.read()
|
||
|
||
-- Check for exit
|
||
if input == "q" or input == "quit" then
|
||
break
|
||
end
|
||
|
||
-- Check for clear screen
|
||
if input == "clear" then
|
||
term.clear()
|
||
drawTopBar()
|
||
-- Move cursor to below top bar and show instructions
|
||
term.setCursorPos(1, 3)
|
||
print("Enter an expression, press Enter to calculate (type 'q' to quit)")
|
||
print("Supports +, -, *, /, ^(exponent), %(modulus), and parentheses")
|
||
print("---------------------------")
|
||
goto continue
|
||
end
|
||
|
||
-- Calculate expression
|
||
local success, result = pcall(function()
|
||
-- Replace Chinese parentheses with English ones
|
||
input = input:gsub("（", "("):gsub("）", ")")
|
||
-- Safely execute expression
|
||
local func = load("return " .. input)
|
||
if func then
|
||
return func()
|
||
else
|
||
error("Invalid expression")
|
||
end
|
||
end)
|
||
|
||
-- Show result
|
||
if success then
|
||
print("Result: " .. result)
|
||
else
|
||
print("Error: " .. tostring(result))
|
||
end
|
||
|
||
::continue::
|
||
end
|
||
|
||
print("Calculator has exited") |