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# The Universal Permissive License (UPL), Version 1.0

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# (a) the Software, and

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# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if

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# Software and the Larger Work(s), and to sublicense the foregoing rights on

# either these or other terms.

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# This license is subject to the following condition:

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import _frozen_importlib

import sys

class PipLoader:

def __init__(self, real_spec):

self.real_spec = real_spec

def create_module(self, spec):

return self.real_spec.loader.create_module(self.real_spec)

def exec_module(self, module):

exec_module_result = self.real_spec.loader.exec_module(module)

if not hasattr(module, 'unpack_file'):

return exec_module_result

old_unpack = module.unpack_file

def unpack_file(filename, location, *args, **kwargs):

result = old_unpack(filename, location, *args, **kwargs)

import os

import re

import subprocess

# we expect filename to be something like "pytest-5.4.2-py3-none-any.whl"

# some packages may have only major.minor or just major version

archive_name = os.path.basename(filename)

name_ver_match = re.search("^([^-]+)-(\\d+)(.\\d+)?(.\\d+)?.*\\.(tar\\.gz|whl)$", archive_name)

if not name_ver_match:

print("Warning: could not parse package name, version, or format from '{}'.\n"

"Could not determine if any GraalPython specific patches need to be applied.".format(archive_name))

return result

package_name = name_ver_match.group(1)

is_sdist = name_ver_match.group(5) == "tar.gz"

patches_base_dir = os.path.join(__graalpython__.core_home, "patches")

# NOTE: Following 3 functions are duplicated in ginstall.py:

# creates a search list of a versioned file:

# {name}-X.Y.Z.{suffix}, {name}-X.Y.{suffix}, {name}-X.{suffix}, {name}.{suffix}

# 'versions' is a result of re.search

def list_versioned(pkg_name, versions, dir, suffix):

acc = ""

res = []

for i in range(2,5):

v = versions.group(i)

if v is not None:

acc = acc + v

res.append(acc)

res.reverse()

res = [os.path.join(dir, pkg_name + "-" + ver + suffix) for ver in res]

res.append(os.path.join(dir, pkg_name + suffix))

return res

def first_existing(pkg_name, versions, dir, suffix):

for filename in list_versioned(pkg_name, versions, dir, suffix):

if os.path.exists(filename):

return filename

def read_first_existing(pkg_name, versions, dir, suffix):

filename = first_existing(pkg_name, versions, dir, suffix)

if filename:

with open(filename, "r") as f:

return f.read()

# end of code duplicated in ginstall.py

def apply_first_existing(dir, suffix, wd=None):

filename = first_existing(package_name, name_ver_match, dir, suffix)

if filename:

print("Patching package " + package_name + " using " + filename)

patch_res = subprocess.run(["patch", "-f", "-d", location, "-p1", "-i", filename], cwd=wd)

if patch_res.returncode != 0:

print("Applying Graal Python patch failed for %s. The package may still work." % package_name)

print("Looking for Graal Python patches for " + package_name)

# patches intended for binary distribution:

# we may need to change wd if we are actually patching the source distribution

bdist_dir = os.path.join(patches_base_dir, package_name, "whl")

bdist_patch_wd = read_first_existing(package_name, name_ver_match, bdist_dir, ".dir") if is_sdist else None

apply_first_existing(bdist_dir, ".patch", bdist_patch_wd)

# patches intended for source distribution if applicable

if is_sdist:

sdist_dir = os.path.join(patches_base_dir, package_name, "sdist")

apply_first_existing(sdist_dir, ".patch")

return result

module.unpack_file = unpack_file

return exec_module_result

class PipImportHook:

@staticmethod

def find_spec(fullname, path, target=None):

# We are patching function 'unpack_file',

# which may be in a different module depending on the PIP version.

# Older versions have it pip._internal.utils.misc, newer versions

# still have module pip._internal.utils.misc, but they moved

# 'unpack_file' to pip._internal.utils.unpacking

is_unpacking = fullname == "pip._internal.utils.unpacking"

is_misc_or_unpacking = is_unpacking or fullname == "pip._internal.utils.misc"

if is_misc_or_unpacking:

for finder in sys.meta_path:

if finder is PipImportHook:

continue

real_spec = finder.find_spec(fullname, path, target=None)

if real_spec:

if is_unpacking:

# We cannot remove ourselves if the module was pip._internal.utils.misc,

# because we still need to watch out for pip._internal.utils.unpacking

sys.meta_path.remove(PipImportHook)

spec = _frozen_importlib.ModuleSpec(fullname, PipLoader(real_spec), is_package=False, origin=real_spec.origin)

spec.has_location = real_spec.has_location

return spec

sys.meta_path.insert(0, PipImportHook)