130 lines
4.2 KiB
Python
130 lines
4.2 KiB
Python
# -*- mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*-
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from wrapper.toxcore_enums_and_consts import TOX_FILE_KIND, TOX_FILE_CONTROL
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from os.path import basename, getsize
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from os import remove
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from time import time
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from wrapper.tox import Tox
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TOX_FILE_TRANSFER_STATE = {
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'RUNNING': 0,
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'PAUSED': 1,
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'CANCELED': 2,
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'FINISHED': 3,
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}
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class FileTransfer(object):
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"""
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Superclass for file transfers
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"""
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def __init__(self, path, tox, friend_number, size, file_number=None):
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self._path = path
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self._tox = tox
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self._friend_number = friend_number
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self.state = TOX_FILE_TRANSFER_STATE['RUNNING']
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self._file_number = file_number
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self._creation_time = time()
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self._size = size
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self._done = 0
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def set_tox(self, tox):
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self._tox = tox
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def get_file_number(self):
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return self._file_number
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def get_friend_number(self):
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return self._friend_number
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def cancel(self):
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self.send_control(TOX_FILE_CONTROL['CANCEL'])
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if hasattr(self, '_file'):
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self._file.close()
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def cancelled(self):
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if hasattr(self, '_file'):
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self._file.close()
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def send_control(self, control):
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if self._tox.file_control(self._friend_number, self._file_number, control):
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self.state = control
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def get_file_id(self):
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return self._tox.file_get_file_id(self._friend_number, self._file_number)
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# -----------------------------------------------------------------------------------------------------------------
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# Send file
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# -----------------------------------------------------------------------------------------------------------------
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class SendTransfer(FileTransfer):
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def __init__(self, path, tox, friend_number, kind=TOX_FILE_KIND['DATA'], file_id=None):
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if path is not None:
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self._file = open(path, 'rb')
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size = getsize(path)
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else:
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size = 0
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super(SendTransfer, self).__init__(path, tox, friend_number, size)
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self._file_number = tox.file_send(friend_number, kind, size, file_id,
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basename(path).encode('utf-8') if path else '')
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def send_chunk(self, position, size):
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"""
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Send chunk
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:param position: start position in file
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:param size: chunk max size
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"""
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if size:
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self._file.seek(position)
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data = self._file.read(size)
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self._tox.file_send_chunk(self._friend_number, self._file_number, position, data)
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self._done += size
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else:
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self._file.close()
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self.state = TOX_FILE_TRANSFER_STATE['FINISHED']
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# -----------------------------------------------------------------------------------------------------------------
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# Receive file
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# -----------------------------------------------------------------------------------------------------------------
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class ReceiveTransfer(FileTransfer):
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def __init__(self, path, tox, friend_number, size, file_number):
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super(ReceiveTransfer, self).__init__(path, tox, friend_number, size, file_number)
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self._file = open(self._path, 'wb')
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self._file.truncate(0)
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self._file_size = 0
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def cancel(self):
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super(ReceiveTransfer, self).cancel()
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remove(self._path)
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def write_chunk(self, position, data):
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"""
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Incoming chunk
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:param position: position in file to save data
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:param data: raw data (string)
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"""
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if data is None:
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self._file.close()
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self.state = TOX_FILE_TRANSFER_STATE['FINISHED']
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else:
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data = ''.join(chr(x) for x in data)
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if self._file_size < position:
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self._file.seek(0, 2)
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self._file.write('\0' * (position - self._file_size))
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self._file.seek(position)
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self._file.write(data)
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self._file.flush()
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l = len(data)
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if position + l > self._file_size:
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self._file_size = position + l
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self._done += l
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if self._done > self._size:
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self.cancel()
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remove(self._path)
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