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_file.py
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_file.py
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import os
# TODO: make File a file-like object, opening the underling file descriptor
# on demand. Think about the
class File(object):
@staticmethod
def create_temp():
return InMemoryFile()
def __init__(self, path):
self.path = path
def __truediv__(self, subpath):
return File(os.path.join(self.path, subpath))
def __repr__(self):
return 'File(\'' + self.path + '\')'
def __str__(self):
if self.path.startswith('./'):
return self.path[2:]
return self.path
def isdir(self):
return os.path.isdir(self.path)
def read(self, mode=''):
with open(self.path, 'r' + mode) as f:
return f.read()
def write(self, data, mode=''):
os.makedirs(os.path.dirname(self.path), exist_ok=True)
with open(self.path, 'w' + mode) as f:
return f.write(data)
def append(self, data):
os.makedirs(os.path.dirname(self.path), exist_ok=True)
with open(self.path, 'a') as f:
return f.write(data)
class InMemoryFile(object):
def __init__(self):
self._buffer = ''
def __repr__(self):
return 'InMemoryFile()'
def __str__(self):
return '<TEMP>'
def isdir(self):
return False
@property
def path(self):
# TODO: Create a real temporary file and return its path.
raise Exception('Not implemented')
def write(self, data):
self._buffer = data
def read(self, mode=''):
if mode == 'b':
return bytes(self._buffer, 'utf-8')
return self._buffer
def append(self, data):
self._buffer += data