from os.path import isfile, join, relpath from glob import glob from tfw.event_handler_base import TriggerlessEventHandler from tfw.components.directory_monitor import DirectoryMonitor from tfw.config.logs import logging log = logging.getLogger(__name__) class FileManager: def __init__(self, working_directory, selected_file=None): self.exclude = ['__pycache__'] self._workdir = working_directory self.filename = selected_file or self.files[0] def select_file(self, filename): if not filename in self.files: raise EnvironmentError('No such file in workdir!') self.filename = filename @property def files(self): return [self._relpath(file) for file in glob(join(self._workdir, '**/*'), recursive=True) if isfile(file) and not any(word in file for word in self.exclude)] @property def file_contents(self): with open(self._filepath(self.filename), 'r', errors='surrogateescape') as ifile: return ifile.read() @file_contents.setter def file_contents(self, value): with open(self._filepath(self.filename), 'w', errors='surrogateescape') as ofile: ofile.write(value) def _filepath(self, filename): return join(self._workdir, filename) def _relpath(self, filename): return relpath(self._filepath(filename), start=self._workdir) class SourceCodeEventHandler(TriggerlessEventHandler): def __init__(self, key, directory, selected_file=None): super().__init__(key) self.filemanager = FileManager(directory, selected_file=selected_file) self.commands = { 'read': self.read, 'write': self.write, 'select': self.select } self._monitor = DirectoryMonitor(directory) self._monitor.watch() # This runs on a separate thread @property def monitor(self): return self._monitor def read(self, data): try: data['content'] = self.filemanager.file_contents except PermissionError: data['content'] = 'You have no permission to open that file :(' except FileNotFoundError: data['content'] = 'This file was removed :(' except Exception: data['content'] = 'Failed to read file :(' return data def write(self, data): self.monitor.eventhandler.ignore = 1 try: self.filemanager.file_contents = data['content'] except Exception: log.exception('Error writing file!') del data['content'] return data def select(self, data): try: self.filemanager.select_file(data['filename']) except EnvironmentError: log.exception('Failed to select file "{}"'.format(data['filename'])) return data def attach_fileinfo(self, data): data['filename'] = self.filemanager.filename data['files'] = self.filemanager.files def handle_event(self, key, data_json): data = data_json['data'] data_json['data'] = self.commands[data['command']](data) self.attach_fileinfo(data) return data_json def cleanup(self): self.monitor.stop()