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__pycache__ dir drwxr-xr-x 2024-11-03 22:12 R D
_backport dir drwxr-xr-x 2024-11-03 22:12 R D
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  compat.py 39.845 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  database.py 48.508 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  index.py 20.591 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  locators.py 49.817 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  manifest.py 14.463 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  markers.py 6.135 KB -rw-r--r-- 2024-10-17 13:12 R E G D
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  resources.py 10.514 KB -rw-r--r-- 2024-10-17 13:12 R E G D
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  util.py 51.749 KB -rw-r--r-- 2024-10-17 13:12 R E G D
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  wheel.py 38.198 KB -rw-r--r-- 2024-10-17 13:12 R E G D
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# -*- coding: utf-8 -*- # # Copyright (C) 2012-2015 Vinay Sajip. # Licensed to the Python Software Foundation under a contributor agreement. # See LICENSE.txt and CONTRIBUTORS.txt. # import gzip from io import BytesIO import json import logging import os import posixpath import re try: import threading except ImportError: # pragma: no cover import dummy_threading as threading import zlib from . import DistlibException from .compat import (urljoin, urlparse, urlunparse, url2pathname, pathname2url, queue, quote, unescape, string_types, build_opener, HTTPRedirectHandler as BaseRedirectHandler, text_type, Request, HTTPError, URLError) from .database import Distribution, DistributionPath, make_dist from .metadata import Metadata from .util import (cached_property, parse_credentials, ensure_slash, split_filename, get_project_data, parse_requirement, parse_name_and_version, ServerProxy, normalize_name) from .version import get_scheme, UnsupportedVersionError from .wheel import Wheel, is_compatible logger = logging.getLogger(__name__) HASHER_HASH = re.compile('^(\w+)=([a-f0-9]+)') CHARSET = re.compile(r';\s*charset\s*=\s*(.*)\s*$', re.I) HTML_CONTENT_TYPE = re.compile('text/html|application/x(ht)?ml') DEFAULT_INDEX = 'https://pypi.python.org/pypi' def get_all_distribution_names(url=None): """ Return all distribution names known by an index. :param url: The URL of the index. :return: A list of all known distribution names. """ if url is None: url = DEFAULT_INDEX client = ServerProxy(url, timeout=3.0) return client.list_packages() class RedirectHandler(BaseRedirectHandler): """ A class to work around a bug in some Python 3.2.x releases. """ # There's a bug in the base version for some 3.2.x # (e.g. 3.2.2 on Ubuntu Oneiric). If a Location header # returns e.g. /abc, it bails because it says the scheme '' # is bogus, when actually it should use the request's # URL for the scheme. See Python issue #13696. def http_error_302(self, req, fp, code, msg, headers): # Some servers (incorrectly) return multiple Location headers # (so probably same goes for URI). Use first header. newurl = None for key in ('location', 'uri'): if key in headers: newurl = headers[key] break if newurl is None: return urlparts = urlparse(newurl) if urlparts.scheme == '': newurl = urljoin(req.get_full_url(), newurl) if hasattr(headers, 'replace_header'): headers.replace_header(key, newurl) else: headers[key] = newurl return BaseRedirectHandler.http_error_302(self, req, fp, code, msg, headers) http_error_301 = http_error_303 = http_error_307 = http_error_302 class Locator(object): """ A base class for locators - things that locate distributions. """ source_extensions = ('.tar.gz', '.tar.bz2', '.tar', '.zip', '.tgz', '.tbz') binary_extensions = ('.egg', '.exe', '.whl') excluded_extensions = ('.pdf',) # A list of tags indicating which wheels you want to match. The default # value of None matches against the tags compatible with the running # Python. If you want to match other values, set wheel_tags on a locator # instance to a list of tuples (pyver, abi, arch) which you want to match. wheel_tags = None downloadable_extensions = source_extensions + ('.whl',) def __init__(self, scheme='default'): """ Initialise an instance. :param scheme: Because locators look for most recent versions, they need to know the version scheme to use. This specifies the current PEP-recommended scheme - use ``'legacy'`` if you need to support existing distributions on PyPI. """ self._cache = {} self.scheme = scheme # Because of bugs in some of the handlers on some of the platforms, # we use our own opener rather than just using urlopen. self.opener = build_opener(RedirectHandler()) # If get_project() is called from locate(), the matcher instance # is set from the requirement passed to locate(). See issue #18 for # why this can be useful to know. self.matcher = None self.errors = queue.Queue() def get_errors(self): """ Return any errors which have occurred. """ result = [] while not self.errors.empty(): # pragma: no cover try: e = self.errors.get(False) result.append(e) except self.errors.Empty: continue self.errors.task_done() return result def clear_errors(self): """ Clear any errors which may have been logged. """ # Just get the errors and throw them away self.get_errors() def clear_cache(self): self._cache.clear() def _get_scheme(self): return self._scheme def _set_scheme(self, value): self._scheme = value scheme = property(_get_scheme, _set_scheme) def _get_project(self, name): """ For a given project, get a dictionary mapping available versions to Distribution instances. This should be implemented in subclasses. If called from a locate() request, self.matcher will be set to a matcher for the requirement to satisfy, otherwise it will be None. """ raise NotImplementedError('Please implement in the subclass') def get_distribution_names(self): """ Return all the distribution names known to this locator. """ raise NotImplementedError('Please implement in the subclass') def get_project(self, name): """ For a given project, get a dictionary mapping available versions to Distribution instances. This calls _get_project to do all the work, and just implements a caching layer on top. """ if self._cache is None: result = self._get_project(name) elif name in self._cache: result = self._cache[name] else: self.clear_errors() result = self._get_project(name) self._cache[name] = result return result def score_url(self, url): """ Give an url a score which can be used to choose preferred URLs for a given project release. """ t = urlparse(url) basename = posixpath.basename(t.path) compatible = True is_wheel = basename.endswith('.whl') if is_wheel: compatible = is_compatible(Wheel(basename), self.wheel_tags) return (t.scheme != 'https', 'pypi.python.org' in t.netloc, is_wheel, compatible, basename) def prefer_url(self, url1, url2): """ Choose one of two URLs where both are candidates for distribution archives for the same version of a distribution (for example, .tar.gz vs. zip). The current implementation favours https:// URLs over http://, archives from PyPI over those from other locations, wheel compatibility (if a wheel) and then the archive name. """ result = url2 if url1: s1 = self.score_url(url1) s2 = self.score_url(url2) if s1 > s2: result = url1 if result != url2: logger.debug('Not replacing %r with %r', url1, url2) else: logger.debug('Replacing %r with %r', url1, url2) return result def split_filename(self, filename, project_name): """ Attempt to split a filename in project name, version and Python version. """ return split_filename(filename, project_name) def convert_url_to_download_info(self, url, project_name): """ See if a URL is a candidate for a download URL for a project (the URL has typically been scraped from an HTML page). If it is, a dictionary is returned with keys "name", "version", "filename" and "url"; otherwise, None is returned. """ def same_project(name1, name2): return normalize_name(name1) == normalize_name(name2) result = None scheme, netloc, path, params, query, frag = urlparse(url) if frag.lower().startswith('egg='): logger.debug('%s: version hint in fragment: %r', project_name, frag) m = HASHER_HASH.match(frag) if m: algo, digest = m.groups() else: algo, digest = None, None origpath = path if path and path[-1] == '/': path = path[:-1] if path.endswith('.whl'): try: wheel = Wheel(path) if is_compatible(wheel, self.wheel_tags): if project_name is None: include = True else: include = same_project(wheel.name, project_name) if include: result = { 'name': wheel.name, 'version': wheel.version, 'filename': wheel.filename, 'url': urlunparse((scheme, netloc, origpath, params, query, '')), 'python-version': ', '.join( ['.'.join(list(v[2:])) for v in wheel.pyver]), } except Exception as e: # pragma: no cover logger.warning('invalid path for wheel: %s', path) elif path.endswith(self.downloadable_extensions): path = filename = posixpath.basename(path) for ext in self.downloadable_extensions: if path.endswith(ext): path = path[:-len(ext)] t = self.split_filename(path, project_name) if not t: logger.debug('No match for project/version: %s', path) else: name, version, pyver = t if not project_name or same_project(project_name, name): result = { 'name': name, 'version': version, 'filename': filename, 'url': urlunparse((scheme, netloc, origpath, params, query, '')), #'packagetype': 'sdist', } if pyver: result['python-version'] = pyver break if result and algo: result['%s_digest' % algo] = digest return result def _get_digest(self, info): """ Get a digest from a dictionary by looking at keys of the form 'algo_digest'. Returns a 2-tuple (algo, digest) if found, else None. Currently looks only for SHA256, then MD5. """ result = None for algo in ('sha256', 'md5'): key = '%s_digest' % algo if key in info: result = (algo, info[key]) break return result def _update_version_data(self, result, info): """ Update a result dictionary (the final result from _get_project) with a dictionary for a specific version, which typically holds information gleaned from a filename or URL for an archive for the distribution. """ name = info.pop('name') version = info.pop('version') if version in result: dist = result[version] md = dist.metadata else: dist = make_dist(name, version, scheme=self.scheme) md = dist.metadata dist.digest = digest = self._get_digest(info) url = info['url'] result['digests'][url] = digest if md.source_url != info['url']: md.source_url = self.prefer_url(md.source_url, url) result['urls'].setdefault(version, set()).add(url) dist.locator = self result[version] = dist def locate(self, requirement, prereleases=False): """ Find the most recent distribution which matches the given requirement. :param requirement: A requirement of the form 'foo (1.0)' or perhaps 'foo (>= 1.0, < 2.0, != 1.3)' :param prereleases: If ``True``, allow pre-release versions to be located. Otherwise, pre-release versions are not returned. :return: A :class:`Distribution` instance, or ``None`` if no such distribution could be located. """ result = None r = parse_requirement(requirement) if r is None: raise DistlibException('Not a valid requirement: %r' % requirement) scheme = get_scheme(self.scheme) self.matcher = matcher = scheme.matcher(r.requirement) logger.debug('matcher: %s (%s)', matcher, type(matcher).__name__) versions = self.get_project(r.name) if len(versions) > 2: # urls and digests keys are present # sometimes, versions are invalid slist = [] vcls = matcher.version_class for k in versions: if k in ('urls', 'digests'): continue try: if not matcher.match(k): logger.debug('%s did not match %r', matcher, k) else: if prereleases or not vcls(k).is_prerelease: slist.append(k) else: logger.debug('skipping pre-release ' 'version %s of %s', k, matcher.name) except Exception: # pragma: no cover logger.warning('error matching %s with %r', matcher, k) pass # slist.append(k) if len(slist) > 1: slist = sorted(slist, key=scheme.key) if slist: logger.debug('sorted list: %s', slist) version = slist[-1] result = versions[version] if result: if r.extras: result.extras = r.extras result.download_urls = versions.get('urls', {}).get(version, set()) d = {} sd = versions.get('digests', {}) for url in result.download_urls: if url in sd: d[url] = sd[url] result.digests = d self.matcher = None return result class PyPIRPCLocator(Locator): """ This locator uses XML-RPC to locate distributions. It therefore cannot be used with simple mirrors (that only mirror file content). """ def __init__(self, url, **kwargs): """ Initialise an instance. :param url: The URL to use for XML-RPC. :param kwargs: Passed to the superclass constructor. """ super(PyPIRPCLocator, self).__init__(**kwargs) self.base_url = url self.client = ServerProxy(url, timeout=3.0) def get_distribution_names(self): """ Return all the distribution names known to this locator. """ return set(self.client.list_packages()) def _get_project(self, name): result = {'urls': {}, 'digests': {}} versions = self.client.package_releases(name, True) for v in versions: urls = self.client.release_urls(name, v) data = self.client.release_data(name, v) metadata = Metadata(scheme=self.scheme) metadata.name = data['name'] metadata.version = data['version'] metadata.license = data.get('license') metadata.keywords = data.get('keywords', []) metadata.summary = data.get('summary') dist = Distribution(metadata) if urls: info = urls[0] metadata.source_url = info['url'] dist.digest = self._get_digest(info) dist.locator = self result[v] = dist for info in urls: url = info['url'] digest = self._get_digest(info) result['urls'].setdefault(v, set()).add(url) result['digests'][url] = digest return result class PyPIJSONLocator(Locator): """ This locator uses PyPI's JSON interface. It's very limited in functionality and probably not worth using. """ def __init__(self, url, **kwargs): super(PyPIJSONLocator, self).__init__(**kwargs) self.base_url = ensure_slash(url) def get_distribution_names(self): """ Return all the distribution names known to this locator. """ raise NotImplementedError('Not available from this locator') def _get_project(self, name): result = {'urls': {}, 'digests': {}} url = urljoin(self.base_url, '%s/json' % quote(name)) try: resp = self.opener.open(url) data = resp.read().decode() # for now d = json.loads(data) md = Metadata(scheme=self.scheme) data = d['info'] md.name = data['name'] md.version = data['version'] md.license = data.get('license') md.keywords = data.get('keywords', []) md.summary = data.get('summary') dist = Distribution(md) dist.locator = self urls = d['urls'] result[md.version] = dist for info in d['urls']: url = info['url'] dist.download_urls.add(url) dist.digests[url] = self._get_digest(info) result['urls'].setdefault(md.version, set()).add(url) result['digests'][url] = self._get_digest(info) # Now get other releases for version, infos in d['releases'].items(): if version == md.version: continue # already done omd = Metadata(scheme=self.scheme) omd.name = md.name omd.version = version odist = Distribution(omd) odist.locator = self result[version] = odist for info in infos: url = info['url'] odist.download_urls.add(url) odist.digests[url] = self._get_digest(info) result['urls'].setdefault(version, set()).add(url) result['digests'][url] = self._get_digest(info) # for info in urls: # md.source_url = info['url'] # dist.digest = self._get_digest(info) # dist.locator = self # for info in urls: # url = info['url'] # result['urls'].setdefault(md.version, set()).add(url) # result['digests'][url] = self._get_digest(info) except Exception as e: self.errors.put(text_type(e)) logger.exception('JSON fetch failed: %s', e) return result class Page(object): """ This class represents a scraped HTML page. """ # The following slightly hairy-looking regex just looks for the contents of # an anchor link, which has an attribute "href" either immediately preceded # or immediately followed by a "rel" attribute. The attribute values can be # declared with double quotes, single quotes or no quotes - which leads to # the length of the expression. _href = re.compile(""" (rel\s*=\s*(?:"(?P[^"]*)"|'(?P[^']*)'|(?P[^>\s\n]*))\s+)? href\s*=\s*(?:"(?P[^"]*)"|'(?P[^']*)'|(?P[^>\s\n]*)) (\s+rel\s*=\s*(?:"(?P[^"]*)"|'(?P[^']*)'|(?P[^>\s\n]*)))? """, re.I | re.S | re.X) _base = re.compile(r"""]+)""", re.I | re.S) def __init__(self, data, url): """ Initialise an instance with the Unicode page contents and the URL they came from. """ self.data = data self.base_url = self.url = url m = self._base.search(self.data) if m: self.base_url = m.group(1) _clean_re = re.compile(r'[^a-z0-9$&+,/:;=?@.#%_\\|-]', re.I) @cached_property def links(self): """ Return the URLs of all the links on a page together with information about their "rel" attribute, for determining which ones to treat as downloads and which ones to queue for further scraping. """ def clean(url): "Tidy up an URL." scheme, netloc, path, params, query, frag = urlparse(url) return urlunparse((s