104 lines
3.3 KiB
Python
104 lines
3.3 KiB
Python
# This file is a part of sedbgmux, an open source DebugMux client.
|
|
# Copyright (c) 2023 Vadim Yanitskiy <fixeria@osmocom.org>
|
|
#
|
|
# SPDX-License-Identifier: GPL-3.0-or-later
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import logging
|
|
import threading
|
|
import queue
|
|
import re
|
|
|
|
from typing import NewType, List, Tuple
|
|
|
|
from . import DbgMuxConnHandler
|
|
from . import DbgMuxConnState
|
|
|
|
# local logger for this module
|
|
log = logging.getLogger(__name__)
|
|
|
|
# a directory item type
|
|
DirItem = NewType('DirItem', Tuple[str, str])
|
|
|
|
|
|
class DbgMuxConnWalker(DbgMuxConnHandler):
|
|
''' A tool to build a hierarchy of 'Interactive Debug' DPs '''
|
|
|
|
line_pattern = re.compile(r'^(\S+)\s+([<(]\S+[>)])')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
self._connected = threading.Event()
|
|
|
|
def _conn_established(self) -> None:
|
|
''' Called when a connection has been established '''
|
|
self._connected.set()
|
|
|
|
def _conn_terminated(self) -> None:
|
|
''' Called when a connection has been terminated '''
|
|
self._connected.clear()
|
|
|
|
def send_cmd(self, cmd: str) -> None:
|
|
''' Send a command '''
|
|
self.send_data(cmd.encode() + b'\r')
|
|
|
|
def read_rsp(self) -> List[str]:
|
|
''' Receive a response, return a list of (not empty) lines '''
|
|
data: bytes = b''
|
|
while self._connected.is_set():
|
|
try:
|
|
data += self._rx_data_queue.get(block=True, timeout=0.2)
|
|
self._rx_data_queue.task_done()
|
|
except queue.Empty:
|
|
break
|
|
rsp = data.decode('ascii').split('\r\n')
|
|
return [l for l in rsp if l != '']
|
|
|
|
def do_chdir(self, dirname: str) -> None:
|
|
''' List current directory contents '''
|
|
self.send_cmd(f'cd {dirname}')
|
|
self.read_rsp() # unused
|
|
|
|
def do_list(self) -> List[DirItem]:
|
|
''' List current directory contents '''
|
|
self.send_cmd('ls')
|
|
rsp = self.read_rsp()
|
|
items = []
|
|
for line in rsp:
|
|
m = self.line_pattern.match(line)
|
|
if m is None:
|
|
continue
|
|
items.append(m.groups())
|
|
return items
|
|
|
|
def walk_dir(self, path: str = '') -> List[DirItem]:
|
|
items: List[DirItem] = self.do_list()
|
|
for item_name, item_type in items:
|
|
print(f'{item_type}\t{path}/{item_name}')
|
|
if item_type == '<DIR>':
|
|
self.do_chdir(item_name)
|
|
self.walk_dir(f'{path}/{item_name}')
|
|
self.do_chdir('..')
|
|
|
|
def walk(self) -> None:
|
|
if not self._connected.wait(0.5):
|
|
log.error('Connection is not established (yet?)')
|
|
return
|
|
# read the welcome message and prompt
|
|
self.read_rsp()
|
|
# get listing of the root directory
|
|
self.do_chdir('/')
|
|
self.walk_dir()
|