DreamShell lua source code

[zaero]

Вот калькулятор:

Код:

-- lua calc by zaero
-- zaero@list.ru

if argv.n < 1 then
print("\n\nLua calc v.0.1 by zaero")
print("Usage: calc -flag(if needed) arg1 operator arg2")
print("Flags:")
print(" -d    -date and clock")
print(" -o    -operations")
print(" -v    -print version")
print(" -h    -help")
print("\n")
print("Examples: calc 2 / 2")
print("\t  calc 2 + 2")
return
end

if argv[1] == "-v" then
print("Lua calc 0.1 for DreamshellXT")
return
end

if argv[1] == "-o" then
print("This version supports such operations: +, -, *, /")
return
end

if argv[1] == "-h" then
print("This flag is not supported")
return
end

if argv[1] == "-d" then
print(os.date())
return
end

if argv[1] then
   if argv[2] then

     if argv[2] == '+' then
       print(argv[1]+argv[3])
     end
     if argv[2] == '-' then
       print(argv[1]-argv[3])
     end
     if argv[2]== '*' then
       print(argv[1]*argv[3])
     end
     if argv[2]== '/' then
       print(argv[1]/argv[3])
     end

   end
return
end