310 lines
10 KiB
Python
310 lines
10 KiB
Python
"""
|
|
Tools for converting old- to new-style metadata.
|
|
"""
|
|
|
|
from collections import namedtuple
|
|
from .pkginfo import read_pkg_info
|
|
from .util import OrderedDefaultDict
|
|
try:
|
|
from collections import OrderedDict
|
|
except ImportError:
|
|
OrderedDict = dict
|
|
|
|
import re
|
|
import os.path
|
|
import textwrap
|
|
import pkg_resources
|
|
import email.parser
|
|
import wheel
|
|
|
|
METADATA_VERSION = "2.0"
|
|
|
|
PLURAL_FIELDS = { "classifier" : "classifiers",
|
|
"provides_dist" : "provides",
|
|
"provides_extra" : "extras" }
|
|
|
|
SKIP_FIELDS = set()
|
|
|
|
CONTACT_FIELDS = (({"email":"author_email", "name": "author"},
|
|
"author"),
|
|
({"email":"maintainer_email", "name": "maintainer"},
|
|
"maintainer"))
|
|
|
|
# commonly filled out as "UNKNOWN" by distutils:
|
|
UNKNOWN_FIELDS = set(("author", "author_email", "platform", "home_page",
|
|
"license"))
|
|
|
|
# Wheel itself is probably the only program that uses non-extras markers
|
|
# in METADATA/PKG-INFO. Support its syntax with the extra at the end only.
|
|
EXTRA_RE = re.compile("""^(?P<package>.*?)(;\s*(?P<condition>.*?)(extra == '(?P<extra>.*?)')?)$""")
|
|
KEYWORDS_RE = re.compile("[\0-,]+")
|
|
|
|
MayRequiresKey = namedtuple('MayRequiresKey', ('condition', 'extra'))
|
|
|
|
def unique(iterable):
|
|
"""
|
|
Yield unique values in iterable, preserving order.
|
|
"""
|
|
seen = set()
|
|
for value in iterable:
|
|
if not value in seen:
|
|
seen.add(value)
|
|
yield value
|
|
|
|
|
|
def handle_requires(metadata, pkg_info, key):
|
|
"""
|
|
Place the runtime requirements from pkg_info into metadata.
|
|
"""
|
|
may_requires = OrderedDefaultDict(list)
|
|
for value in sorted(pkg_info.get_all(key)):
|
|
extra_match = EXTRA_RE.search(value)
|
|
if extra_match:
|
|
groupdict = extra_match.groupdict()
|
|
condition = groupdict['condition']
|
|
extra = groupdict['extra']
|
|
package = groupdict['package']
|
|
if condition.endswith(' and '):
|
|
condition = condition[:-5]
|
|
else:
|
|
condition, extra = None, None
|
|
package = value
|
|
key = MayRequiresKey(condition, extra)
|
|
may_requires[key].append(package)
|
|
|
|
if may_requires:
|
|
metadata['run_requires'] = []
|
|
for key, value in may_requires.items():
|
|
may_requirement = OrderedDict((('requires', value),))
|
|
if key.extra:
|
|
may_requirement['extra'] = key.extra
|
|
if key.condition:
|
|
may_requirement['environment'] = key.condition
|
|
metadata['run_requires'].append(may_requirement)
|
|
|
|
if not 'extras' in metadata:
|
|
metadata['extras'] = []
|
|
metadata['extras'].extend([key.extra for key in may_requires.keys() if key.extra])
|
|
|
|
|
|
def pkginfo_to_dict(path, distribution=None):
|
|
"""
|
|
Convert PKG-INFO to a prototype Metadata 2.0 (PEP 426) dict.
|
|
|
|
The description is included under the key ['description'] rather than
|
|
being written to a separate file.
|
|
|
|
path: path to PKG-INFO file
|
|
distribution: optional distutils Distribution()
|
|
"""
|
|
|
|
metadata = OrderedDefaultDict(lambda: OrderedDefaultDict(lambda: OrderedDefaultDict(OrderedDict)))
|
|
metadata["generator"] = "bdist_wheel (" + wheel.__version__ + ")"
|
|
try:
|
|
unicode
|
|
pkg_info = read_pkg_info(path)
|
|
except NameError:
|
|
pkg_info = email.parser.Parser().parsestr(open(path, 'rb').read().decode('utf-8'))
|
|
description = None
|
|
|
|
if pkg_info['Summary']:
|
|
metadata['summary'] = pkginfo_unicode(pkg_info, 'Summary')
|
|
del pkg_info['Summary']
|
|
|
|
if pkg_info['Description']:
|
|
description = dedent_description(pkg_info)
|
|
del pkg_info['Description']
|
|
else:
|
|
payload = pkg_info.get_payload()
|
|
if isinstance(payload, bytes):
|
|
# Avoid a Python 2 Unicode error.
|
|
# We still suffer ? glyphs on Python 3.
|
|
payload = payload.decode('utf-8')
|
|
if payload:
|
|
description = payload
|
|
|
|
if description:
|
|
pkg_info['description'] = description
|
|
|
|
for key in sorted(unique(k.lower() for k in pkg_info.keys())):
|
|
low_key = key.replace('-', '_')
|
|
|
|
if low_key in SKIP_FIELDS:
|
|
continue
|
|
|
|
if low_key in UNKNOWN_FIELDS and pkg_info.get(key) == 'UNKNOWN':
|
|
continue
|
|
|
|
if low_key in sorted(PLURAL_FIELDS):
|
|
metadata[PLURAL_FIELDS[low_key]] = pkg_info.get_all(key)
|
|
|
|
elif low_key == "requires_dist":
|
|
handle_requires(metadata, pkg_info, key)
|
|
|
|
elif low_key == 'provides_extra':
|
|
if not 'extras' in metadata:
|
|
metadata['extras'] = []
|
|
metadata['extras'].extend(pkg_info.get_all(key))
|
|
|
|
elif low_key == 'home_page':
|
|
metadata['extensions']['python.details']['project_urls'] = {'Home':pkg_info[key]}
|
|
|
|
elif low_key == 'keywords':
|
|
metadata['keywords'] = KEYWORDS_RE.split(pkg_info[key])
|
|
|
|
else:
|
|
metadata[low_key] = pkg_info[key]
|
|
|
|
metadata['metadata_version'] = METADATA_VERSION
|
|
|
|
if 'extras' in metadata:
|
|
metadata['extras'] = sorted(set(metadata['extras']))
|
|
|
|
# include more information if distribution is available
|
|
if distribution:
|
|
for requires, attr in (('test_requires', 'tests_require'),):
|
|
try:
|
|
requirements = getattr(distribution, attr)
|
|
if isinstance(requirements, list):
|
|
new_requirements = sorted(convert_requirements(requirements))
|
|
metadata[requires] = [{'requires':new_requirements}]
|
|
except AttributeError:
|
|
pass
|
|
|
|
# handle contacts
|
|
contacts = []
|
|
for contact_type, role in CONTACT_FIELDS:
|
|
contact = OrderedDict()
|
|
for key in sorted(contact_type):
|
|
if contact_type[key] in metadata:
|
|
contact[key] = metadata.pop(contact_type[key])
|
|
if contact:
|
|
contact['role'] = role
|
|
contacts.append(contact)
|
|
if contacts:
|
|
metadata['extensions']['python.details']['contacts'] = contacts
|
|
|
|
# convert entry points to exports
|
|
try:
|
|
with open(os.path.join(os.path.dirname(path), "entry_points.txt"), "r") as ep_file:
|
|
ep_map = pkg_resources.EntryPoint.parse_map(ep_file.read())
|
|
exports = OrderedDict()
|
|
for group, items in sorted(ep_map.items()):
|
|
exports[group] = OrderedDict()
|
|
for item in sorted(map(str, items.values())):
|
|
name, export = item.split(' = ', 1)
|
|
exports[group][name] = export
|
|
if exports:
|
|
metadata['extensions']['python.exports'] = exports
|
|
except IOError:
|
|
pass
|
|
|
|
# copy console_scripts entry points to commands
|
|
if 'python.exports' in metadata['extensions']:
|
|
for (ep_script, wrap_script) in (('console_scripts', 'wrap_console'),
|
|
('gui_scripts', 'wrap_gui')):
|
|
if ep_script in metadata['extensions']['python.exports']:
|
|
metadata['extensions']['python.commands'][wrap_script] = \
|
|
metadata['extensions']['python.exports'][ep_script]
|
|
|
|
return metadata
|
|
|
|
def requires_to_requires_dist(requirement):
|
|
"""Compose the version predicates for requirement in PEP 345 fashion."""
|
|
requires_dist = []
|
|
for op, ver in requirement.specs:
|
|
requires_dist.append(op + ver)
|
|
if not requires_dist:
|
|
return ''
|
|
return " (%s)" % ','.join(requires_dist)
|
|
|
|
def convert_requirements(requirements):
|
|
"""Yield Requires-Dist: strings for parsed requirements strings."""
|
|
for req in requirements:
|
|
parsed_requirement = pkg_resources.Requirement.parse(req)
|
|
spec = requires_to_requires_dist(parsed_requirement)
|
|
extras = ",".join(parsed_requirement.extras)
|
|
if extras:
|
|
extras = "[%s]" % extras
|
|
yield (parsed_requirement.project_name + extras + spec)
|
|
|
|
def pkginfo_to_metadata(egg_info_path, pkginfo_path):
|
|
"""
|
|
Convert .egg-info directory with PKG-INFO to the Metadata 1.3 aka
|
|
old-draft Metadata 2.0 format.
|
|
"""
|
|
pkg_info = read_pkg_info(pkginfo_path)
|
|
pkg_info.replace_header('Metadata-Version', '2.0')
|
|
requires_path = os.path.join(egg_info_path, 'requires.txt')
|
|
if os.path.exists(requires_path):
|
|
requires = open(requires_path).read()
|
|
for extra, reqs in sorted(pkg_resources.split_sections(requires),
|
|
key=lambda x: x[0] or ''):
|
|
condition = ''
|
|
if extra and ':' in extra: # setuptools extra:condition syntax
|
|
extra, condition = extra.split(':', 1)
|
|
if extra:
|
|
pkg_info['Provides-Extra'] = extra
|
|
if condition:
|
|
condition += " and "
|
|
condition += 'extra == %s' % repr(extra)
|
|
if condition:
|
|
condition = '; ' + condition
|
|
for new_req in sorted(convert_requirements(reqs)):
|
|
pkg_info['Requires-Dist'] = new_req + condition
|
|
|
|
description = pkg_info['Description']
|
|
if description:
|
|
pkg_info.set_payload(dedent_description(pkg_info))
|
|
del pkg_info['Description']
|
|
|
|
return pkg_info
|
|
|
|
|
|
def pkginfo_unicode(pkg_info, field):
|
|
"""Hack to coax Unicode out of an email Message() - Python 3.3+"""
|
|
text = pkg_info[field]
|
|
field = field.lower()
|
|
if not isinstance(text, str):
|
|
if not hasattr(pkg_info, 'raw_items'): # Python 3.2
|
|
return str(text)
|
|
for item in pkg_info.raw_items():
|
|
if item[0].lower() == field:
|
|
text = item[1].encode('ascii', 'surrogateescape')\
|
|
.decode('utf-8')
|
|
break
|
|
|
|
return text
|
|
|
|
|
|
def dedent_description(pkg_info):
|
|
"""
|
|
Dedent and convert pkg_info['Description'] to Unicode.
|
|
"""
|
|
description = pkg_info['Description']
|
|
|
|
# Python 3 Unicode handling, sorta.
|
|
surrogates = False
|
|
if not isinstance(description, str):
|
|
surrogates = True
|
|
description = pkginfo_unicode(pkg_info, 'Description')
|
|
|
|
description_lines = description.splitlines()
|
|
description_dedent = '\n'.join(
|
|
# if the first line of long_description is blank,
|
|
# the first line here will be indented.
|
|
(description_lines[0].lstrip(),
|
|
textwrap.dedent('\n'.join(description_lines[1:])),
|
|
'\n'))
|
|
|
|
if surrogates:
|
|
description_dedent = description_dedent\
|
|
.encode("utf8")\
|
|
.decode("ascii", "surrogateescape")
|
|
|
|
return description_dedent
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import sys, pprint
|
|
pprint.pprint(pkginfo_to_dict(sys.argv[1]))
|