baseimage-tutorial-framework/tfw/components/ide/ide_handler.py
2019-08-07 09:44:03 +02:00

98 lines
2.7 KiB
Python

import logging
from os.path import isfile
from tfw.internals.networking import Scope
from tfw.internals.inotify import InotifyObserver
from .file_manager import FileManager
LOG = logging.getLogger(__name__)
BUILD_ARTIFACTS = (
"*.a",
"*.class",
"*.dll",
"*.dylib",
"*.elf",
"*.exe",
"*.jar",
"*.ko",
"*.la",
"*.lib",
"*.lo",
"*.o",
"*.obj",
"*.out",
"*.py[cod]",
"*.so",
"*.so.*",
"*.tar.gz",
"*.zip",
"*__pycache__*"
)
class IdeHandler:
keys = ['ide.read', 'ide.write']
def __init__(self, *, patterns, initial_file=''):
self.connector = None
self.filemanager = FileManager(patterns)
self._initial_file = initial_file
self.monitor = InotifyObserver(
path=self.filemanager.parents,
exclude=BUILD_ARTIFACTS
)
self.monitor.on_modified = self._reload_frontend
self.monitor.start()
self.commands = {
'ide.read' : self.read,
'ide.write' : self.write
}
@property
def initial_file(self):
if not isfile(self._initial_file):
self._initial_file = self.filemanager.files[0]
return self._initial_file
def _reload_frontend(self, event): # pylint: disable=unused-argument
self.send_message({'key': 'ide.reload'})
def send_message(self, message):
self.connector.send_message(message, scope=Scope.WEBSOCKET)
def read(self, message):
if message.get('files'):
self.filemanager.patterns = message['files']
try:
message['content'] = self.filemanager.read_file(message['filename'])
except PermissionError:
message['content'] = 'You have no permission to open that file :('
except FileNotFoundError:
message['content'] = 'This file was removed :('
except Exception: # pylint: disable=broad-except
message['content'] = 'Failed to read file :('
def write(self, message):
try:
self.filemanager.write_file(message['filename'], message['content'])
except Exception: # pylint: disable=broad-except
LOG.exception('Error writing file!')
del message['content']
def handle_event(self, message, _):
try:
if message['filename'] == '':
message['filename'] = self.initial_file
self.commands[message['key']](message)
message['files'] = self.filemanager.files
self.send_message(message)
except KeyError:
LOG.error('IGNORING MESSAGE: Invalid message received: %s', message)
def cleanup(self):
self.monitor.stop()