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Mini Shell
Mini Shell
"""
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 <https://www.gnu.org/licenses/>.
Copyright © 2019 Cloud Linux Software Inc.
This software is also available under ImunifyAV commercial license,
see <https://www.imunify360.com/legal/eula>
"""
class LineBuffer(object):
"""
Allows to accumulate data, and than iterate over it getting tokens
split by line breaks '\n'. If at the end there is no line break,
the data will sit in the line buffer until more data with line
break comes in.
"""
def __init__(self):
self.buf = ''
def append(self, data):
self.buf += data
def __iter__(self):
return self
def __next__(self):
pos = self.buf.find('\n')
if pos != -1:
result = self.buf[0:pos]
self.buf = self.buf[pos+1:]
return result
raise StopIteration
def clean(self):
self.buf = ''
class SizeBuffer:
def __init__(self, size_len=2):
self._buf = b''
self._size_len = size_len
def append(self, data):
self._buf += data
def __iter__(self):
return self
def __next__(self):
if not self._buf:
raise StopIteration
size = int.from_bytes(self._buf[:self._size_len], 'big')
if len(self._buf[self._size_len:]) >= size:
data = self._buf[self._size_len:self._size_len + size]
self._buf = self._buf[self._size_len + size:]
return data
raise StopIteration
Zerion Mini Shell 1.0