knock/lib/utils.py

45 lines
No EOL
1.2 KiB
Python

import click, subprocess, sys
# run a command and display output in a styled terminal
# cleanser is called if the command returns a >0 exit code
def run(command: [str], stdin: str = '', cleanser = lambda: None) -> int:
open_fake_terminal(' '.join(command))
result = subprocess.run(
command,
stderr=subprocess.STDOUT,
input=stdin.encode(),
check=False # don't throw Python error if returncode isn't 0
)
close_fake_terminal(result.returncode, cleanser)
return result.returncode
def open_fake_terminal(command: str):
click.secho('', fg='white', bg='black', bold=True, reset=False)
# show command
click.echo(f'knock> {command}')
# remove bold
click.secho('', fg='white', bg='black', bold=False, reset=False)
def close_fake_terminal(exit_code: int, cleanser = lambda: None):
click.secho(f'\nknock[{exit_code}]>', bold=True)
# newline
click.echo('')
if exit_code > 0:
cleanser()
click.echo(f'Error: Command returned error code {exit_code}.', err=True)
sys.exit(1)
def verify_absence_of(file_path):
if m4b_path.exists():
click.echo(f"Error: {file_path} must be moved out of the way or deleted.", err=True)
sys.exit(1)