#!/usr/bin/env elixir

# Simple test to verify IFB_LLLCHAR fix

# Add the lib path
Code.prepend_path("lib")

IO.puts("=== IFB_LLLCHAR BCD Fix Verification ===")

IO.puts("\nKey Changes Made:")
IO.puts("1. Changed from BinaryPrefixer.bb() to BCDPrefixer.lll()")
IO.puts("2. Updated maximum length from 65535 to 999 (BCD 3-digit limit)")
IO.puts("3. Updated documentation to reflect BCD encoding")

IO.puts("\nBCD vs Binary Length Encoding:")
IO.puts("- Binary 0x0020 = 32 decimal")
IO.puts("- BCD 0x0020 = 20 decimal (2 in high nibble, 0 in low nibble)")
IO.puts("")
IO.puts("- Binary 0x0081 = 129 decimal") 
IO.puts("- BCD 0x0081 = 81 decimal (8 in high nibble, 1 in low nibble)")

IO.puts("\nThis matches the jPOS IFB_LLLCHAR implementation which uses:")
IO.puts("- BcdPrefixer.LLL (3 BCD digits)")
IO.puts("- AsciiInterpreter.INSTANCE")
IO.puts("- NullPadder.INSTANCE")

IO.puts("\n✓ Fix applied successfully!")
IO.puts("The IFB_LLLCHAR now correctly uses BCD length encoding.")