Python File.write_async方法代碼示例

# 需要導入模塊: from zim.fs import File [as 別名]
# 或者: from zim.fs.File import write_async [as 別名]
	def testFS(self):
		'''Test async FS operations'''

		self.path = self.create_tmp_dir('testFS')+'/file.txt'

		file = File(self.path)

		op1 = file.write_async('foo bar 1\n')
		op2 = file.write_async('foo bar 2\n')

		op1.wait()
		op2.wait()

		self.assertEqual(file.read(), 'foo bar 2\n')

# 需要導入模塊: from zim.fs import File [as 別名]
# 或者: from zim.fs.File import write_async [as 別名]

#.........這裏部分代碼省略.........
			path = (path,)
		self._path = tuple(path)
		if file:
			self.file = file
		else:
			self.file = File((XDG_CONFIG_HOME, 'zim') + self._path)

	def __repr__(self):
		return '<%s: %s>' % (self.__class__.__name__, self.file.path)

	def __eq__(self, other):
		return isinstance(other, ConfigFile) \
		and other._path == self._path \
		and other.file == self.file

	@property
	def basename(self):
		return self.file.basename

	def default_files(self):
		'''Generator that yields default config files (read-only) to
		use instead of the standard file when it is still empty.
		Typically only the first one is used.
		'''
		for dir in config_dirs():
			default = dir.file(self._path)
			if default.exists():
				yield default

	def touch(self):
		'''Ensure the custom file in the home folder exists. Either by
		copying a default config file, or touching an empty file.
		Intended to be called before trying to edit the file with an
		external editor.
		'''
		if not self.file.exists():
			for file in self.default_files():
				file.copyto(self.file)
				break
			else:
				self.file.touch() # create empty file

	def read(self, fail=False):
		'''Read the base file or first default file
		@param fail: if C{True} a L{FileNotFoundError} error is raised
		when neither the base file or a default file are found. If
		C{False} it will return C{''} for a non-existing file.
		@returns: file content as a string
		'''
		try:
			return self.file.read()
		except FileNotFoundError:
			for file in self.default_files():
				return file.read()
			else:
				if fail:
					raise
				else:
					return ''

	def readlines(self, fail=False):
		'''Read the base file or first default file
		@param fail: if C{True} a L{FileNotFoundError} error is raised
		when neither the base file or a default file are found. If
		C{False} it will return C{[]} for a non-existing file.
		@returns: file content as a list of lines
		'''
		try:
			return self.file.readlines()
		except FileNotFoundError:
			for file in self.default_files():
				return file.readlines()
			else:
				if fail:
					raise
				else:
					return []

	# Not implemented: read_async and readlines_async

	def write(self, text):
		'''Write base file, see L{File.write()}'''
		self.file.write(text)

	def writelines(self, lines):
		'''Write base file, see L{File.writelines()}'''
		self.file.writelines(lines)

	def write_async(self, text, callback=None, data=None):
		'''Write base file async, see L{File.write_async()}'''
		return self.file.write_async(text, callback=callback, data=data)

	def writelines_async(self, lines, callback=None, data=None):
		'''Write base file async, see L{File.writelines_async()}'''
		return self.file.writelines_async(lines, callback=callback, data=data)

	def remove(self):
		'''Remove user file, leaves default files in place'''
		if self.file.exists():
			return self.file.remove()