esp-idf/docs/idf_extensions/util.py

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Python
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# Utility functions used in conf.py
#
# Copyright 2017 Espressif Systems (Shanghai) PTE LTD
#
# 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.
from __future__ import unicode_literals
from io import open
import os
import shutil
import sys
try:
import urllib.request
_urlretrieve = urllib.request.urlretrieve
except ImportError:
# Python 2 fallback
import urllib
_urlretrieve = urllib.urlretrieve
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def files_equal(path_1, path_2):
if not os.path.exists(path_1) or not os.path.exists(path_2):
return False
file_1_contents = ''
with open(path_1, "r", encoding='utf-8') as f_1:
file_1_contents = f_1.read()
file_2_contents = ''
with open(path_2, "r", encoding='utf-8') as f_2:
file_2_contents = f_2.read()
return file_1_contents == file_2_contents
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def copy_file_if_modified(src_file_path, dst_file_path):
if not files_equal(src_file_path, dst_file_path):
dst_dir_name = os.path.dirname(dst_file_path)
if not os.path.isdir(dst_dir_name):
os.makedirs(dst_dir_name)
shutil.copy(src_file_path, dst_file_path)
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def copy_if_modified(src_path, dst_path):
if os.path.isfile(src_path):
copy_file_if_modified(src_path, dst_path)
return
src_path_len = len(src_path)
for root, dirs, files in os.walk(src_path):
for src_file_name in files:
src_file_path = os.path.join(root, src_file_name)
dst_file_path = os.path.join(dst_path + root[src_path_len:], src_file_name)
copy_file_if_modified(src_file_path, dst_file_path)
def download_file_if_missing(from_url, to_path):
filename_with_path = to_path + "/" + os.path.basename(from_url)
exists = os.path.isfile(filename_with_path)
if exists:
print("The file '%s' already exists" % (filename_with_path))
else:
tmp_file, header = _urlretrieve(from_url)
with open(filename_with_path, 'wb') as fobj:
with open(tmp_file, 'rb') as tmp:
fobj.write(tmp.read())
def call_with_python(cmd):
# using sys.executable ensures that the scripts are called with the same Python interpreter
if os.system('{} {}'.format(sys.executable, cmd)) != 0:
raise RuntimeError('{} failed'.format(cmd))