rpcore/util/submodule_downloader.py
"""
RenderPipeline
Copyright (c) 2014-2016 tobspr <tobias.springer1@gmail.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""
from __future__ import print_function
import os
import sys
import zipfile
import shutil
from rplibs.six.moves import urllib # pylint: disable=import-error
from rplibs.six import BytesIO, binary_type
def download_file(url, chunk_size=100 * 1024):
""" Helper method to download a file displaying a progress bar """
print("Fetching:", url)
file_content = None
progressbar = None
if sys.version_info.major <= 2:
# Import progressbar library
from rplibs.progressbar import FileTransferSpeed, ETA, ProgressBar, Percentage
from rplibs.progressbar import Bar
widgets = ['\tDownloading: ', FileTransferSpeed(), ' ', Bar(), Percentage(), ' ', ETA()]
file_content = []
bytes_read = 0
# Progressively download the file
try:
usock = urllib.request.urlopen(url)
file_size = int(usock.headers.get("Content-Length", 1e10))
print("File size is", round(file_size / (1024**2), 2), "MB")
progressbar = ProgressBar(widgets=widgets, maxval=file_size).start()
while True:
data = usock.read(chunk_size)
file_content.append(data)
bytes_read += len(data)
progressbar.update(bytes_read)
if not data:
break
usock.close()
except Exception:
print("ERROR: Could not fetch", url, "!", file=sys.stderr)
raise
else:
# Don't use progressbar in python 3
print("Downloading .. (progressbar disabled due to python 3 build)")
try:
usock = urllib.request.urlopen(url)
file_content = []
while True:
data = usock.read(chunk_size)
file_content.append(data)
if not data:
break
usock.close()
except Exception:
print("ERROR: Could not fetch", url, "!", file=sys.stderr)
raise
if progressbar:
progressbar.finish()
return binary_type().join(file_content)
def download_submodule(author, module_name, dest_path, ignore_list):
""" Downloads a submodule from the given author and module name, and extracts
all files which are not on the ignore_list to the dest_path.
Example: download_submodule("tobspr", "RenderPipeline", ".", ["README.md", "LICENSE"])
"""
# Make directory, if it does not exist yet
if not os.path.isdir(dest_path):
os.makedirs(dest_path)
# Construct download url
source_url = "https://github.com/" + author + "/" + module_name + "/archive/master.zip"
prefix = module_name + "-master"
# Extract the zip
zip_ptr = BytesIO(download_file(source_url))
print("Extracting ZIP ...")
try:
zip_handle = zipfile.ZipFile(zip_ptr)
except zipfile.BadZipfile:
print("ERROR: Invalid zip file!", file=sys.stderr)
sys.exit(3)
if zip_handle.testzip() is not None:
print("ERROR: Invalid zip file checksums!", file=sys.stderr)
sys.exit(1)
num_files, num_dirs = 0, 0
for fname in zip_handle.namelist():
rel_name = fname.replace(prefix, "").replace("\\", "/").lstrip("/")
if not rel_name:
continue
is_file = not rel_name.endswith("/")
rel_name = dest_path.rstrip("/\\") + "/" + rel_name
# Files
if is_file:
for ignore in ignore_list:
if ignore in rel_name:
break
else:
with zip_handle.open(fname, "r") as source, open(rel_name, "wb") as dest:
shutil.copyfileobj(source, dest)
num_files += 1
# Directories
else:
if not os.path.isdir(rel_name):
os.makedirs(rel_name)
num_dirs += 1
print("Extracted", num_files, "files and", num_dirs, "directories")