# Copyright 2015 The TensorFlow Authors. All Rights Reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# ==============================================================================

"""IO helper functions."""

from __future__ import absolute_import

from __future__ import division

from __future__ import print_function

import os

from tensorflow.python.platform import gfile

def IsGCSPath(path):

return path.startswith("gs://")

def ListDirectoryAbsolute(directory):

"""Yields all files in the given directory. The paths are absolute."""

return (os.path.join(directory, path)

for path in gfile.ListDirectory(directory))

def ListRecursively(top):

"""Walks a directory tree, yielding (dir_path, file_paths) tuples.

For each of `top` and its subdirectories, yields a tuple containing the path

to the directory and the path to each of the contained files. Note that

unlike os.Walk()/gfile.Walk(), this does not list subdirectories and the file

paths are all absolute.

If the directory does not exist, this yields nothing.

Args:

top: A path to a directory..

Yields:

A list of (dir_path, file_paths) tuples.

"""

for dir_path, _, filenames in gfile.Walk(top):

yield (dir_path, (os.path.join(dir_path, filename)

for filename in filenames))