cgfs.py 文件源码

def truncate(self, length):
        old_data = self.data

        if length == 0:
            self.data = bytes('', 'utf8')
        elif length <= len(old_data):
            self.data = self.data[:length]
        else:
            self.data = old_data + bytes(
                '\0' * (length - len(old_data)), 'utf8'
            )
        self.stat['st_atime'] = time()
        self.stat['st_mtime'] = time()
        self.dirty = True