1008ac4406
A utility for creating python package from the python package index. It fetches packages info from http://pypi.python.org and generates corresponding packages files. Signed-off-by: Denis THULIN <denis.thulin@openwide.fr> Tested-by: Carlos Santos <casantos@datacom.ind.br> Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> [Thomas: minor tweaks.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
651 lines
25 KiB
Python
Executable File
651 lines
25 KiB
Python
Executable File
#!/usr/bin/python2
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"""
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Utility for building Buildroot packages for existing PyPI packages
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Any package built by scanpypi should be manually checked for
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errors.
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"""
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from __future__ import print_function
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import argparse
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import json
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import urllib2
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import sys
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import os
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import shutil
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import StringIO
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import tarfile
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import zipfile
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import errno
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import hashlib
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import re
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import textwrap
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import tempfile
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import imp
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from functools import wraps
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def setup_decorator(func, method):
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"""
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Decorator for distutils.core.setup and setuptools.setup.
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Puts the arguments with which setup is called as a dict
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Add key 'method' which should be either 'setuptools' or 'distutils'.
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Keyword arguments:
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func -- either setuptools.setup or distutils.core.setup
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method -- either 'setuptools' or 'distutils'
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"""
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@wraps(func)
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def closure(*args, **kwargs):
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# Any python packages calls its setup function to be installed.
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# Argument 'name' of this setup function is the package's name
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BuildrootPackage.setup_args[kwargs['name']] = kwargs
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BuildrootPackage.setup_args[kwargs['name']]['method'] = method
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return closure
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# monkey patch
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import setuptools
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setuptools.setup = setup_decorator(setuptools.setup, 'setuptools')
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import distutils
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distutils.core.setup = setup_decorator(setuptools.setup, 'distutils')
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def find_file_upper_case(filenames, path='./'):
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"""
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List generator:
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Recursively find files that matches one of the specified filenames.
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Returns a relative path starting with path argument.
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Keyword arguments:
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filenames -- List of filenames to be found
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path -- Path to the directory to search
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"""
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for root, dirs, files in os.walk(path):
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for file in files:
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if file.upper() in filenames:
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yield (os.path.join(root, file))
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def pkg_buildroot_name(pkg_name):
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"""
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Returns the Buildroot package name for the PyPI package pkg_name.
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Remove all non alphanumeric characters except -
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Also lowers the name and adds 'python-' suffix
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Keyword arguments:
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pkg_name -- String to rename
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"""
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name = re.sub('[^\w-]', '', pkg_name.lower())
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prefix = 'python-'
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pattern = re.compile('^(?!' + prefix + ')(.+?)$')
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name = pattern.sub(r'python-\1', name)
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return name
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class DownloadFailed(Exception):
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pass
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class BuildrootPackage():
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"""This class's methods are not meant to be used individually please
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use them in the correct order:
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__init__
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download_package
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extract_package
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load_module
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get_requirements
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create_package_mk
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create_hash_file
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create_config_in
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"""
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setup_args = {}
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def __init__(self, real_name, pkg_folder):
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self.real_name = real_name
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self.buildroot_name = pkg_buildroot_name(self.real_name)
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self.pkg_dir = os.path.join(pkg_folder, self.buildroot_name)
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self.mk_name = self.buildroot_name.upper().replace('-', '_')
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self.as_string = None
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self.md5_sum = None
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self.metadata = None
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self.metadata_name = None
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self.metadata_url = None
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self.pkg_req = None
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self.setup_metadata = None
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self.tmp_extract = None
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self.used_url = None
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self.filename = None
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self.url = None
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self.version = None
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def fetch_package_info(self):
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"""
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Fetch a package's metadata from the python package index
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"""
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self.metadata_url = 'https://pypi.python.org/pypi/{pkg}/json'.format(
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pkg=self.real_name)
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try:
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pkg_json = urllib2.urlopen(self.metadata_url).read().decode()
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except urllib2.HTTPError as error:
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print('ERROR:', error.getcode(), error.msg, file=sys.stderr)
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print('ERROR: Could not find package {pkg}.\n'
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'Check syntax inside the python package index:\n'
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'https://pypi.python.org/pypi/ '
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.format(pkg=self.real_name))
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raise
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except urllib2.URLError:
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print('ERROR: Could not find package {pkg}.\n'
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'Check syntax inside the python package index:\n'
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'https://pypi.python.org/pypi/ '
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.format(pkg=self.real_name))
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raise
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self.metadata = json.loads(pkg_json)
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self.version = self.metadata['info']['version']
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self.metadata_name = self.metadata['info']['name']
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def download_package(self):
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"""
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Download a package using metadata from pypi
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"""
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try:
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self.metadata['urls'][0]['filename']
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except IndexError:
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print(
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'Non-conventional package, ',
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'please check carefully after creation')
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self.metadata['urls'] = [{
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'packagetype': 'sdist',
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'url': self.metadata['info']['download_url'],
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'md5_digest': None}]
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# In this case, we can't get the name of the downloaded file
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# from the pypi api, so we need to find it, this should work
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urlpath = urllib2.urlparse.urlparse(
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self.metadata['info']['download_url']).path
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# urlparse().path give something like
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# /path/to/file-version.tar.gz
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# We use basename to remove /path/to
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self.metadata['urls'][0]['filename'] = os.path.basename(urlpath)
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for download_url in self.metadata['urls']:
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if 'bdist' in download_url['packagetype']:
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continue
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try:
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print('Downloading package {pkg} from {url}...'.format(
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pkg=self.real_name, url=download_url['url']))
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download = urllib2.urlopen(download_url['url'])
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except urllib2.HTTPError as http_error:
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download = http_error
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else:
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self.used_url = download_url
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self.as_string = download.read()
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if not download_url['md5_digest']:
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break
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self.md5_sum = hashlib.md5(self.as_string).hexdigest()
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if self.md5_sum == download_url['md5_digest']:
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break
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else:
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if download.__class__ == urllib2.HTTPError:
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raise download
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raise DownloadFailed('Failed to downloas package {pkg}'
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.format(pkg=self.real_name))
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self.filename = self.used_url['filename']
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self.url = self.used_url['url']
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def extract_package(self, tmp_path):
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"""
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Extract the package contents into a directrory
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Keyword arguments:
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tmp_path -- directory where you want the package to be extracted
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"""
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as_file = StringIO.StringIO(self.as_string)
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if self.filename[-3:] == 'zip':
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with zipfile.ZipFile(as_file) as as_zipfile:
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tmp_pkg = os.path.join(tmp_path, self.buildroot_name)
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try:
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os.makedirs(tmp_pkg)
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except OSError as exception:
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if exception.errno != errno.EEXIST:
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print("ERROR: ", exception.message, file=sys.stderr)
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return None, None
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print('WARNING:', exception.message, file=sys.stderr)
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print('Removing {pkg}...'.format(pkg=tmp_pkg))
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shutil.rmtree(tmp_pkg)
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os.makedirs(tmp_pkg)
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as_zipfile.extractall(tmp_pkg)
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else:
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with tarfile.open(fileobj=as_file) as as_tarfile:
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tmp_pkg = os.path.join(tmp_path, self.buildroot_name)
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try:
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os.makedirs(tmp_pkg)
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except OSError as exception:
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if exception.errno != errno.EEXIST:
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print("ERROR: ", exception.message, file=sys.stderr)
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return None, None
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print('WARNING:', exception.message, file=sys.stderr)
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print('Removing {pkg}...'.format(pkg=tmp_pkg))
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shutil.rmtree(tmp_pkg)
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os.makedirs(tmp_pkg)
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as_tarfile.extractall(tmp_pkg)
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tmp_extract = '{folder}/{name}-{version}'
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self.tmp_extract = tmp_extract.format(
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folder=tmp_pkg,
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name=self.metadata_name,
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version=self.version)
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def load_setup(self):
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"""
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Loads the corresponding setup and store its metadata
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"""
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current_dir = os.getcwd()
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os.chdir(self.tmp_extract)
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sys.path.append(self.tmp_extract)
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s_file, s_path, s_desc = imp.find_module('setup', [self.tmp_extract])
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setup = imp.load_module('setup', s_file, s_path, s_desc)
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try:
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self.setup_metadata = self.setup_args[self.metadata_name]
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except KeyError:
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# This means setup was not called which most likely mean that it is
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# called through the if __name__ == '__main__' directive.
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# In this case, we can only pray that it is called through a
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# function called main() in setup.py.
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setup.main([]) # Will raise AttributeError if not found
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self.setup_metadata = self.setup_args[self.metadata_name]
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# Here we must remove the module the hard way.
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# We must do this because of a very sepcific case: if a package calls
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# setup from the __main__ but does not come with a 'main()' function,
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# for some reason setup.main([]) will successfully call the main
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# function of a previous package...
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sys.modules.pop('setup',None)
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del setup
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os.chdir(current_dir)
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sys.path.remove(self.tmp_extract)
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def get_requirements(self, pkg_folder):
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"""
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Retrieve dependencies from the metadata found in the setup.py script of
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a pypi package.
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Keyword Arguments:
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pkg_folder -- location of the already created packages
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"""
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if 'install_requires' not in self.setup_metadata:
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self.pkg_req = None
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return set()
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self.pkg_req = self.setup_metadata['install_requires']
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self.pkg_req = [re.sub('([-.\w]+).*', r'\1', req)
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for req in self.pkg_req]
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req_not_found = self.pkg_req
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self.pkg_req = map(pkg_buildroot_name, self.pkg_req)
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pkg_tuples = zip(req_not_found, self.pkg_req)
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# pkg_tuples is a list of tuples that looks like
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# ('werkzeug','python-werkzeug') because I need both when checking if
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# dependencies already exist or are already in the download list
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req_not_found = set(
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pkg[0] for pkg in pkg_tuples
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if not os.path.isdir(pkg[1])
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)
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return req_not_found
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def __create_mk_header(self):
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"""
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Create the header of the <package_name>.mk file
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"""
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header = ['#' * 80 + '\n']
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header.append('#\n')
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header.append('# {name}\n'.format(name=self.buildroot_name))
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header.append('#\n')
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header.append('#' * 80 + '\n')
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header.append('\n')
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return header
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def __create_mk_download_info(self):
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"""
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Create the lines refering to the download information of the
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<package_name>.mk file
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"""
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lines = []
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version_line = '{name}_VERSION = {version}\n'.format(
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name=self.mk_name,
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version=self.version)
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lines.append(version_line)
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targz = self.filename.replace(
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self.version,
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'$({name}_VERSION)'.format(name=self.mk_name))
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targz_line = '{name}_SOURCE = {filename}\n'.format(
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name=self.mk_name,
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filename=targz)
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lines.append(targz_line)
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if self.filename not in self.url:
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# Sometimes the filename is in the url, sometimes it's not
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site_url = self.url
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else:
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site_url = self.url[:self.url.find(self.filename)]
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site_line = '{name}_SITE = {url}'.format(name=self.mk_name,
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url=site_url)
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site_line = site_line.rstrip('/') + '\n'
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lines.append(site_line)
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return lines
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def __create_mk_setup(self):
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"""
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Create the line refering to the setup method of the package of the
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<package_name>.mk file
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There are two things you can use to make an installer
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for a python package: distutils or setuptools
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distutils comes with python but does not support dependencies.
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distutils is mostly still there for backward support.
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setuptools is what smart people use,
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but it is not shipped with python :(
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"""
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lines = []
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setup_type_line = '{name}_SETUP_TYPE = {method}\n'.format(
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name=self.mk_name,
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method=self.setup_metadata['method'])
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lines.append(setup_type_line)
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return lines
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def __create_mk_license(self):
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"""
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Create the lines referring to the package's license informations of the
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<package_name>.mk file
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The license is found using the metadata from pypi.
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In the metadata, the license can be found either with standard names in
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the classifiers part or with naming from the packager in the "License"
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part.
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From the classifiers, the license is "translated" according to
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buildroot standards if need be (i.e. from Apache Software License to
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Apache-2.0).
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From the License part, we cannot guess what formatting the packager
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used. Hence, it is likely to be incorrect. (i.e. Apache License 2.0
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instead of Apache-2.0).
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The license's files are found by searching the package for files named
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license or license.txt (case insensitive).
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If more than one license file is found, the user is asked to select
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which ones he wants to use.
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"""
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license_dict = {
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'Apache Software License': 'Apache-2.0',
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'BSD License': 'BSD',
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'European Union Public Licence 1.0': 'EUPLv1.0',
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'European Union Public Licence 1.1': 'EUPLv1.1',
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"GNU General Public License": "GPL",
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"GNU General Public License v2": "GPLv2",
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"GNU General Public License v2 or later": "GPLv2+",
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"GNU General Public License v3": "GPLv3",
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"GNU General Public License v3 or later": "GPLv3+",
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"GNU Lesser General Public License v2": "LGPLv2.1",
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"GNU Lesser General Public License v2 or later": "LGPLv2.1+",
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"GNU Lesser General Public License v3": "LGPLv3",
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"GNU Lesser General Public License v3 or later": "LGPLv3+",
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"GNU Library or Lesser General Public License": "LGPLv2",
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"ISC License": "ISC",
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"MIT License": "MIT",
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"Mozilla Public License 1.0": "MPL-1.0",
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"Mozilla Public License 1.1": "MPL-1.1",
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"Mozilla Public License 2.0": "MPL-2.0",
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"Zope Public License": "ZPL"
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}
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regexp = re.compile('^License :* *.* *:+ (.*)( \(.*\))?$')
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classifiers_licenses = [regexp.sub(r"\1", lic)
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for lic in self.metadata['info']['classifiers']
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if regexp.match(lic)]
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licenses = map(lambda x: license_dict[x] if x in license_dict else x,
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classifiers_licenses)
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lines = []
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if not len(licenses):
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print('WARNING: License has been set to "{license}". It is most'
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' likely wrong, please change it if need be'.format(
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license=', '.join(licenses)))
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licenses = [self.metadata['info']['license']]
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license_line = '{name}_LICENSE = {license}\n'.format(
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name=self.mk_name,
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license=', '.join(licenses))
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lines.append(license_line)
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filenames = ['LICENSE', 'LICENSE.TXT', 'COPYING', 'COPYING.TXT']
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license_files = list(find_file_upper_case(filenames, self.tmp_extract))
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license_files = [license.replace(self.tmp_extract, '')[1:]
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for license in license_files]
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if len(license_files) > 0:
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if len(license_files) > 1:
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print('More than one file found for license:',
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', '.join(license_files))
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license_files = [filename
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for index, filename in enumerate(license_files)]
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license_file_line = ('{name}_LICENSE_FILES ='
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' {files}\n'.format(
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name=self.mk_name,
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files=' '.join(license_files)))
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lines.append(license_file_line)
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else:
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print('WARNING: No license file found,'
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' please specify it manually afterwards')
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license_file_line = '# No license file found\n'
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return lines
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def __create_mk_requirements(self):
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"""
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Create the lines referring to the dependencies of the of the
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<package_name>.mk file
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Keyword Arguments:
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pkg_name -- name of the package
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pkg_req -- dependencies of the package
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"""
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lines = []
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dependencies_line = ('{name}_DEPENDENCIES ='
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' {reqs}\n'.format(
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name=self.mk_name,
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reqs=' '.join(self.pkg_req)))
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lines.append(dependencies_line)
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return lines
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def create_package_mk(self):
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"""
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Create the lines corresponding to the <package_name>.mk file
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"""
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pkg_mk = '{name}.mk'.format(name=self.buildroot_name)
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path_to_mk = os.path.join(self.pkg_dir, pkg_mk)
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print('Creating {file}...'.format(file=path_to_mk))
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lines = self.__create_mk_header()
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lines += self.__create_mk_download_info()
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lines += self.__create_mk_setup()
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lines += self.__create_mk_license()
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if self.pkg_req:
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lines += self.__create_mk_requirements()
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lines.append('\n')
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lines.append('$(eval $(python-package))')
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lines.append('\n')
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with open(path_to_mk, 'w') as mk_file:
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mk_file.writelines(lines)
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def create_hash_file(self):
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"""
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Create the lines corresponding to the <package_name>.hash files
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"""
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pkg_hash = '{name}.hash'.format(name=self.buildroot_name)
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path_to_hash = os.path.join(self.pkg_dir, pkg_hash)
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print('Creating {filename}...'.format(filename=path_to_hash))
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lines = []
|
|
if self.used_url['md5_digest']:
|
|
md5_comment = '# md5 from {url}\n'.format(url=self.metadata_url)
|
|
lines.append(md5_comment)
|
|
hash_line = '{method}\t{digest} {filename}\n'.format(
|
|
method='md5',
|
|
digest=self.used_url['md5_digest'],
|
|
filename=self.filename)
|
|
lines.append(hash_line)
|
|
sha256_comment = '# sha256 calculated by scanpypi\n'
|
|
lines.append(sha256_comment)
|
|
digest = hashlib.sha256(self.as_string).hexdigest()
|
|
hash_line = '{method}\t{digest} {filename}\n'.format(
|
|
method='sha256',
|
|
digest=digest,
|
|
filename=self.filename)
|
|
lines.append(hash_line)
|
|
|
|
with open(path_to_hash, 'w') as hash_file:
|
|
hash_file.writelines(lines)
|
|
|
|
def create_config_in(self):
|
|
"""
|
|
Creates the Config.in file of a package
|
|
"""
|
|
path_to_config = os.path.join(self.pkg_dir, 'Config.in')
|
|
print('Creating {file}...'.format(file=path_to_config))
|
|
lines = []
|
|
config_line = 'config BR2_PACKAGE_{name}\n'.format(
|
|
name=self.mk_name)
|
|
lines.append(config_line)
|
|
|
|
bool_line = '\tbool "{name}"\n'.format(name=self.buildroot_name)
|
|
lines.append(bool_line)
|
|
if self.pkg_req:
|
|
for dep in self.pkg_req:
|
|
dep_line = '\tselect BR2_PACKAGE_{req}\n'.format(
|
|
req=dep.upper().replace('-', '_'))
|
|
lines.append(dep_line)
|
|
|
|
lines.append('\thelp\n')
|
|
|
|
help_lines = textwrap.wrap(self.metadata['info']['summary'],
|
|
initial_indent='\t ',
|
|
subsequent_indent='\t ')
|
|
# \t + two spaces is 3 char long
|
|
help_lines.append('')
|
|
help_lines.append('\t ' + self.metadata['info']['home_page'])
|
|
help_lines = map(lambda x: x + '\n', help_lines)
|
|
lines += help_lines
|
|
|
|
with open(path_to_config, 'w') as config_file:
|
|
config_file.writelines(lines)
|
|
|
|
|
|
def main():
|
|
# Building the parser
|
|
parser = argparse.ArgumentParser(
|
|
description="Creates buildroot packages from the metadata of "
|
|
"an existing PyPI packages and include it "
|
|
"in menuconfig")
|
|
parser.add_argument("packages",
|
|
help="list of packages to be created",
|
|
nargs='+')
|
|
parser.add_argument("-o", "--output",
|
|
help="""
|
|
Output directory for packages.
|
|
Default is ./package
|
|
""",
|
|
default='./package')
|
|
|
|
args = parser.parse_args()
|
|
packages = list(set(args.packages))
|
|
|
|
# tmp_path is where we'll extract the files later
|
|
tmp_prefix = 'scanpypi-'
|
|
pkg_folder = args.output
|
|
tmp_path = tempfile.mkdtemp(prefix=tmp_prefix)
|
|
try:
|
|
for real_pkg_name in packages:
|
|
package = BuildrootPackage(real_pkg_name, pkg_folder)
|
|
print('buildroot package name for {}:'.format(package.real_name),
|
|
package.buildroot_name)
|
|
# First we download the package
|
|
# Most of the info we need can only be found inside the package
|
|
print('Package:', package.buildroot_name)
|
|
print('Fetching package', package.real_name)
|
|
try:
|
|
package.fetch_package_info()
|
|
except (urllib2.URLError, urllib2.HTTPError):
|
|
continue
|
|
if package.metadata_name.lower() == 'setuptools':
|
|
# setuptools imports itself, that does not work very well
|
|
# with the monkey path at the begining
|
|
print('Error: setuptools cannot be built using scanPyPI')
|
|
continue
|
|
|
|
try:
|
|
package.download_package()
|
|
except urllib2.HTTPError as error:
|
|
print('Error: {code} {reason}'.format(code=error.code,
|
|
reason=error.reason))
|
|
print('Error downloading package :', package.buildroot_name)
|
|
print()
|
|
continue
|
|
|
|
# extract the tarball
|
|
try:
|
|
package.extract_package(tmp_path)
|
|
except (tarfile.ReadError, zipfile.BadZipfile):
|
|
print('Error extracting package {}'.format(package.real_name))
|
|
print()
|
|
continue
|
|
|
|
# Loading the package install info from the package
|
|
try:
|
|
package.load_setup()
|
|
except ImportError as err:
|
|
if 'buildutils' in err.message:
|
|
print('This package needs buildutils')
|
|
else:
|
|
raise
|
|
continue
|
|
except AttributeError:
|
|
print('Error: Could not install package {pkg}'.format(
|
|
pkg=package.real_name))
|
|
continue
|
|
|
|
# Package requirement are an argument of the setup function
|
|
req_not_found = package.get_requirements(pkg_folder)
|
|
req_not_found = req_not_found.difference(packages)
|
|
|
|
packages += req_not_found
|
|
if req_not_found:
|
|
print('Added packages \'{pkgs}\' as dependencies of {pkg}'
|
|
.format(pkgs=", ".join(req_not_found),
|
|
pkg=package.buildroot_name))
|
|
print('Checking if package {name} already exists...'.format(
|
|
name=package.pkg_dir))
|
|
try:
|
|
os.makedirs(package.pkg_dir)
|
|
except OSError as exception:
|
|
if exception.errno != errno.EEXIST:
|
|
print("ERROR: ", exception.message, file=sys.stderr)
|
|
continue
|
|
print('Error: Package {name} already exists'
|
|
.format(name=package.pkg_dir))
|
|
del_pkg = raw_input(
|
|
'Do you want to delete existing package ? [y/N]')
|
|
if del_pkg.lower() == 'y':
|
|
shutil.rmtree(package.pkg_dir)
|
|
os.makedirs(package.pkg_dir)
|
|
else:
|
|
continue
|
|
package.create_package_mk()
|
|
|
|
package.create_hash_file()
|
|
|
|
package.create_config_in()
|
|
print()
|
|
# printing an empty line for visual confort
|
|
finally:
|
|
shutil.rmtree(tmp_path)
|
|
|
|
if __name__ == "__main__":
|
|
main()
|