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from __future__ import absolute_import import logging import os from pip.exceptions import CommandError from pip.index import FormatControl from pip.req import RequirementSet from pip.basecommand import RequirementCommand from pip import cmdoptions from pip.utils import ensure_dir, normalize_path from pip.utils.build import BuildDirectory from pip.utils.filesystem import check_path_owner logger = logging.getLogger(__name__) class DownloadCommand(RequirementCommand): """ Download packages from: - PyPI (and other indexes) using requirement specifiers. - VCS project urls. - Local project directories. - Local or remote source archives. pip also supports downloading from "requirements files", which provide an easy way to specify a whole environment to be downloaded. """ name = 'download' usage = """ %prog [options] <requirement specifier> [package-index-options] ... %prog [options] -r <requirements file> [package-index-options] ... %prog [options] [-e] <vcs project url> ... %prog [options] [-e] <local project path> ... %prog [options] <archive url/path> ...""" summary = 'Download packages.' def __init__(self, *args, **kw): super(DownloadCommand, self).__init__(*args, **kw) cmd_opts = self.cmd_opts cmd_opts.add_option(cmdoptions.constraints()) cmd_opts.add_option(cmdoptions.editable()) cmd_opts.add_option(cmdoptions.requirements()) cmd_opts.add_option(cmdoptions.build_dir()) cmd_opts.add_option(cmdoptions.no_deps()) cmd_opts.add_option(cmdoptions.global_options()) cmd_opts.add_option(cmdoptions.no_binary()) cmd_opts.add_option(cmdoptions.only_binary()) cmd_opts.add_option(cmdoptions.src()) cmd_opts.add_option(cmdoptions.pre()) cmd_opts.add_option(cmdoptions.no_clean()) cmd_opts.add_option(cmdoptions.require_hashes()) cmd_opts.add_option( '-d', '--dest', '--destination-dir', '--destination-directory', dest='download_dir', metavar='dir', default=os.curdir, help=("Download packages into <dir>."), ) cmd_opts.add_option( '--platform', dest='platform', metavar='platform', default=None, help=("Only download wheels compatible with <platform>. " "Defaults to the platform of the running system."), ) cmd_opts.add_option( '--python-version', dest='python_version', metavar='python_version', default=None, help=("Only download wheels compatible with Python " "interpreter version <version>. If not specified, then the " "current system interpreter minor version is used. A major " "version (e.g. '2') can be specified to match all " "minor revs of that major version. A minor version " "(e.g. '34') can also be specified."), ) cmd_opts.add_option( '--implementation', dest='implementation', metavar='implementation', default=None, help=("Only download wheels compatible with Python " "implementation <implementation>, e.g. 'pp', 'jy', 'cp', " " or 'ip'. If not specified, then the current " "interpreter implementation is used. Use 'py' to force " "implementation-agnostic wheels."), ) cmd_opts.add_option( '--abi', dest='abi', metavar='abi', default=None, help=("Only download wheels compatible with Python " "abi <abi>, e.g. 'pypy_41'. If not specified, then the " "current interpreter abi tag is used. Generally " "you will need to specify --implementation, " "--platform, and --python-version when using " "this option."), ) index_opts = cmdoptions.make_option_group( cmdoptions.non_deprecated_index_group, self.parser, ) self.parser.insert_option_group(0, index_opts) self.parser.insert_option_group(0, cmd_opts) def run(self, options, args): options.ignore_installed = True if options.python_version: python_versions = [options.python_version] else: python_versions = None dist_restriction_set = any([ options.python_version, options.platform, options.abi, options.implementation, ]) binary_only = FormatControl(set(), set([':all:'])) if dist_restriction_set and options.format_control != binary_only: raise CommandError( "--only-binary=:all: must be set and --no-binary must not " "be set (or must be set to :none:) when restricting platform " "and interpreter constraints using --python-version, " "--platform, --abi, or --implementation." ) options.src_dir = os.path.abspath(options.src_dir) options.download_dir = normalize_path(options.download_dir) ensure_dir(options.download_dir) with self._build_session(options) as session: finder = self._build_package_finder( options=options, session=session, platform=options.platform, python_versions=python_versions, abi=options.abi, implementation=options.implementation, ) build_delete = (not (options.no_clean or options.build_dir)) if options.cache_dir and not check_path_owner(options.cache_dir): logger.warning( "The directory '%s' or its parent directory is not owned " "by the current user and caching wheels has been " "disabled. check the permissions and owner of that " "directory. If executing pip with sudo, you may want " "sudo's -H flag.", options.cache_dir, ) options.cache_dir = None with BuildDirectory(options.build_dir, delete=build_delete) as build_dir: requirement_set = RequirementSet( build_dir=build_dir, src_dir=options.src_dir, download_dir=options.download_dir, ignore_installed=True, ignore_dependencies=options.ignore_dependencies, session=session, isolated=options.isolated_mode, require_hashes=options.require_hashes ) self.populate_requirement_set( requirement_set, args, options, finder, session, self.name, None ) if not requirement_set.has_requirements: return requirement_set.prepare_files(finder) downloaded = ' '.join([ req.name for req in requirement_set.successfully_downloaded ]) if downloaded: logger.info( 'Successfully downloaded %s', downloaded ) # Clean up if not options.no_clean: requirement_set.cleanup_files() return requirement_set