diff options
Diffstat (limited to 'python/vyos/utils/io.py')
| -rw-r--r-- | python/vyos/utils/io.py | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/python/vyos/utils/io.py b/python/vyos/utils/io.py index 8790cbaac..0afaf695c 100644 --- a/python/vyos/utils/io.py +++ b/python/vyos/utils/io.py @@ -13,6 +13,8 @@ # You should have received a copy of the GNU Lesser General Public # License along with this library. If not, see <http://www.gnu.org/licenses/>. +from typing import Callable + def print_error(str='', end='\n'): """ Print `str` to stderr, terminated with `end`. @@ -24,13 +26,18 @@ def print_error(str='', end='\n'): sys.stderr.write(end) sys.stderr.flush() -def ask_input(question, default='', numeric_only=False, valid_responses=[]): +def ask_input(question, default='', numeric_only=False, valid_responses=[], + no_echo=False): + from getpass import getpass question_out = question if default: question_out += f' (Default: {default})' response = '' while True: - response = input(question_out + ' ').strip() + if not no_echo: + response = input(question_out + ' ').strip() + else: + response = getpass(question_out + ' ').strip() if not response and default: return default if numeric_only: @@ -72,3 +79,26 @@ def is_dumb_terminal(): """Check if the current TTY is dumb, so that we can disable advanced terminal features.""" import os return os.getenv('TERM') in ['vt100', 'dumb'] + +def select_entry(l: list, list_msg: str = '', prompt_msg: str = '', + list_format: Callable = None,) -> str: + """Select an entry from a list + + Args: + l (list): a list of entries + list_msg (str): a message to print before listing the entries + prompt_msg (str): a message to print as prompt for selection + + Returns: + str: a selected entry + """ + en = list(enumerate(l, 1)) + print(list_msg) + for i, e in en: + if list_format: + print(f'\t{i}: {list_format(e)}') + else: + print(f'\t{i}: {e}') + select = ask_input(prompt_msg, numeric_only=True, + valid_responses=range(1, len(l)+1)) + return next(filter(lambda x: x[0] == select, en))[1] |