Current File : //opt/alt/python35/lib64/python3.5/ensurepip/rewheel/__init__.py
import argparse
import codecs
import csv
import email.parser
import os
import io
import re
import site
import subprocess
import sys
import zipfile
def run():
parser = argparse.ArgumentParser(description='Recreate wheel of package with given RECORD.')
parser.add_argument('record_path',
help='Path to RECORD file')
parser.add_argument('-o', '--output-dir',
help='Dir where to place the wheel, defaults to current working dir.',
dest='outdir',
default=os.path.curdir)
ns = parser.parse_args()
retcode = 0
try:
print(rewheel_from_record(**vars(ns)))
except BaseException as e:
print('Failed: {}'.format(e))
retcode = 1
sys.exit(1)
def find_system_records(projects):
"""Return list of paths to RECORD files for system-installed projects.
If a project is not installed, the resulting list contains None instead
of a path to its RECORD
"""
records = []
# get system site-packages dirs
sys_sitepack = site.getsitepackages([sys.base_prefix, sys.base_exec_prefix])
sys_sitepack = [sp for sp in sys_sitepack if os.path.exists(sp)]
# try to find all projects in all system site-packages
for project in projects:
path = None
for sp in sys_sitepack:
dist_info_re = os.path.join(sp, project) + '-[^\{0}]+\.dist-info'.format(os.sep)
candidates = [os.path.join(sp, p) for p in os.listdir(sp)]
# filter out candidate dirs based on the above regexp
filtered = [c for c in candidates if re.match(dist_info_re, c)]
# if we have 0 or 2 or more dirs, something is wrong...
if len(filtered) == 1:
path = filtered[0]
if path is not None:
records.append(os.path.join(path, 'RECORD'))
else:
records.append(None)
return records
def rewheel_from_record(record_path, outdir):
"""Recreates a whee of package with given record_path and returns path
to the newly created wheel."""
site_dir = os.path.dirname(os.path.dirname(record_path))
record_relpath = record_path[len(site_dir):].strip(os.path.sep)
to_write, to_omit = get_records_to_pack(site_dir, record_relpath)
new_wheel_name = get_wheel_name(record_path)
new_wheel_path = os.path.join(outdir, new_wheel_name + '.whl')
new_wheel = zipfile.ZipFile(new_wheel_path, mode='w', compression=zipfile.ZIP_DEFLATED)
# we need to write a new record with just the files that we will write,
# e.g. not binaries and *.pyc/*.pyo files
new_record = io.StringIO()
writer = csv.writer(new_record)
# handle files that we can write straight away
for f, sha_hash, size in to_write:
new_wheel.write(os.path.join(site_dir, f), arcname=f)
writer.writerow([f, sha_hash,size])
# rewrite the old wheel file with a new computed one
writer.writerow([record_relpath, '', ''])
new_wheel.writestr(record_relpath, new_record.getvalue())
new_wheel.close()
return new_wheel.filename
def get_wheel_name(record_path):
"""Return proper name of the wheel, without .whl."""
wheel_info_path = os.path.join(os.path.dirname(record_path), 'WHEEL')
with codecs.open(wheel_info_path, encoding='utf-8') as wheel_info_file:
wheel_info = email.parser.Parser().parsestr(wheel_info_file.read())
metadata_path = os.path.join(os.path.dirname(record_path), 'METADATA')
with codecs.open(metadata_path, encoding='utf-8') as metadata_file:
metadata = email.parser.Parser().parsestr(metadata_file.read())
# construct name parts according to wheel spec
distribution = metadata.get('Name')
version = metadata.get('Version')
build_tag = '' # nothing for now
lang_tag = []
for t in wheel_info.get_all('Tag'):
lang_tag.append(t.split('-')[0])
lang_tag = '.'.join(lang_tag)
abi_tag, plat_tag = wheel_info.get('Tag').split('-')[1:3]
# leave out build tag, if it is empty
to_join = filter(None, [distribution, version, build_tag, lang_tag, abi_tag, plat_tag])
return '-'.join(list(to_join))
def get_records_to_pack(site_dir, record_relpath):
"""Accepts path of sitedir and path of RECORD file relative to it.
Returns two lists:
- list of files that can be written to new RECORD straight away
- list of files that shouldn't be written or need some processing
(pyc and pyo files, scripts)
"""
record_file_path = os.path.join(site_dir, record_relpath)
with codecs.open(record_file_path, encoding='utf-8') as record_file:
record_contents = record_file.read()
# temporary fix for https://github.com/pypa/pip/issues/1376
# we need to ignore files under ".data" directory
data_dir = os.path.dirname(record_relpath).strip(os.path.sep)
data_dir = data_dir[:-len('dist-info')] + 'data'
to_write = []
to_omit = []
for l in record_contents.splitlines():
spl = l.split(',')
if len(spl) == 3:
# new record will omit (or write differently):
# - abs paths, paths with ".." (entry points),
# - pyc+pyo files
# - the old RECORD file
# TODO: is there any better way to recognize an entry point?
if os.path.isabs(spl[0]) or spl[0].startswith('..') or \
spl[0].endswith('.pyc') or spl[0].endswith('.pyo') or \
spl[0] == record_relpath or spl[0].startswith(data_dir):
to_omit.append(spl)
else:
to_write.append(spl)
else:
pass # bad RECORD or empty line
return to_write, to_omit
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