mirror of https://github.com/pypa/pip
155 lines
5.0 KiB
Python
155 lines
5.0 KiB
Python
from __future__ import absolute_import
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import logging
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import sys
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import textwrap
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from distutils.version import StrictVersion, LooseVersion
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from functools import reduce
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from pip.basecommand import Command, SUCCESS
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from pip.download import PipXmlrpcTransport
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from pip.utils import get_terminal_size
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from pip.utils.logging import indent_log
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from pip.compat import cmp
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from pip.exceptions import CommandError
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from pip.status_codes import NO_MATCHES_FOUND
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from pip._vendor import pkg_resources
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from pip._vendor.six.moves import xmlrpc_client
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logger = logging.getLogger(__name__)
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class SearchCommand(Command):
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"""Search for PyPI packages whose name or summary contains <query>."""
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name = 'search'
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usage = """
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%prog [options] <query>"""
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summary = 'Search PyPI for packages.'
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def __init__(self, *args, **kw):
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super(SearchCommand, self).__init__(*args, **kw)
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self.cmd_opts.add_option(
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'--index',
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dest='index',
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metavar='URL',
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default='https://pypi.python.org/pypi',
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help='Base URL of Python Package Index (default %default)')
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self.parser.insert_option_group(0, self.cmd_opts)
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def run(self, options, args):
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if not args:
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raise CommandError('Missing required argument (search query).')
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query = args
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pypi_hits = self.search(query, options)
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hits = transform_hits(pypi_hits)
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terminal_width = None
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if sys.stdout.isatty():
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terminal_width = get_terminal_size()[0]
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print_results(hits, terminal_width=terminal_width)
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if pypi_hits:
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return SUCCESS
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return NO_MATCHES_FOUND
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def search(self, query, options):
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index_url = options.index
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with self._build_session(options) as session:
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transport = PipXmlrpcTransport(index_url, session)
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pypi = xmlrpc_client.ServerProxy(index_url, transport)
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hits = pypi.search({'name': query, 'summary': query}, 'or')
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return hits
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def transform_hits(hits):
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"""
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The list from pypi is really a list of versions. We want a list of
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packages with the list of versions stored inline. This converts the
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list from pypi into one we can use.
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"""
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packages = {}
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for hit in hits:
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name = hit['name']
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summary = hit['summary']
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version = hit['version']
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score = hit['_pypi_ordering']
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if score is None:
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score = 0
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if name not in packages.keys():
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packages[name] = {
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'name': name,
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'summary': summary,
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'versions': [version],
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'score': score,
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}
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else:
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packages[name]['versions'].append(version)
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# if this is the highest version, replace summary and score
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if version == highest_version(packages[name]['versions']):
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packages[name]['summary'] = summary
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packages[name]['score'] = score
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# each record has a unique name now, so we will convert the dict into a
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# list sorted by score
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package_list = sorted(
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packages.values(),
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key=lambda x: x['score'],
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reverse=True,
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)
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return package_list
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def print_results(hits, name_column_width=25, terminal_width=None):
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installed_packages = [p.project_name for p in pkg_resources.working_set]
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for hit in hits:
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name = hit['name']
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summary = hit['summary'] or ''
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if terminal_width is not None:
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# wrap and indent summary to fit terminal
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summary = textwrap.wrap(
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summary,
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terminal_width - name_column_width - 5,
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)
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summary = ('\n' + ' ' * (name_column_width + 3)).join(summary)
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line = '%s - %s' % (name.ljust(name_column_width), summary)
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try:
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logger.info(line)
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if name in installed_packages:
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dist = pkg_resources.get_distribution(name)
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with indent_log():
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latest = highest_version(hit['versions'])
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if dist.version == latest:
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logger.info('INSTALLED: %s (latest)', dist.version)
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else:
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logger.info('INSTALLED: %s', dist.version)
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logger.info('LATEST: %s', latest)
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except UnicodeEncodeError:
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pass
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def compare_versions(version1, version2):
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try:
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return cmp(StrictVersion(version1), StrictVersion(version2))
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# in case of abnormal version number, fall back to LooseVersion
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except ValueError:
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pass
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try:
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return cmp(LooseVersion(version1), LooseVersion(version2))
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except TypeError:
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# certain LooseVersion comparions raise due to unorderable types,
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# fallback to string comparison
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return cmp([str(v) for v in LooseVersion(version1).version],
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[str(v) for v in LooseVersion(version2).version])
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def highest_version(versions):
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return reduce(
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(lambda v1, v2: compare_versions(v1, v2) == 1 and v1 or v2),
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versions,
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)
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