usv-to-debug.py

#!/usr/bin/env python3

# USV example script that demonstrates the use of USV characters.
# This script reads STDIN one character at a time, and prints text.

import io
import sys
sys.stdin.reconfigure(encoding='utf-8')
sys.stdout.reconfigure(encoding='utf-8')
escape = False

while True:
    c = sys.stdin.read(1)
    if c == '':
        break
    if escape:
        escape = False
        print(f"\nescape character: {c}\n", end='', flush=True)
    else:
        match c:
            case "\u001B" | "␛":
                print("\nescape\n", end='', flush=True)
                escape = True
            case "\u001F" | "␟":
                print(f"\nunit separator\n", end='', flush=True)
            case "\u001E" | "␞":
                print(f"\nrecord separator\n", end='', flush=True)
            case "\u001D" | "␝":
                print(f"\ngroup separator\n", end='', flush=True)
            case "\u001C" | "␜":
                print(f"\nfile separator\n", end='', flush=True)
            case "\u0004" | "␄":
                print(f"\nend of transmission\n", end='', flush=True)
                break
            case (c):
                print(f"{c}", end='', flush=True)
print()