You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
288 lines
7.7 KiB
288 lines
7.7 KiB
from collections import namedtuple
|
|
from hashlib import sha256
|
|
import os
|
|
import shutil
|
|
import sys
|
|
import fnmatch
|
|
|
|
from sympy.testing.pytest import XFAIL
|
|
|
|
|
|
def may_xfail(func):
|
|
if sys.platform.lower() == 'darwin' or os.name == 'nt':
|
|
# sympy.utilities._compilation needs more testing on Windows and macOS
|
|
# once those two platforms are reliably supported this xfail decorator
|
|
# may be removed.
|
|
return XFAIL(func)
|
|
else:
|
|
return func
|
|
|
|
|
|
class CompilerNotFoundError(FileNotFoundError):
|
|
pass
|
|
|
|
|
|
class CompileError (Exception):
|
|
"""Failure to compile one or more C/C++ source files."""
|
|
|
|
|
|
def get_abspath(path, cwd='.'):
|
|
""" Returns the absolute path.
|
|
|
|
Parameters
|
|
==========
|
|
|
|
path : str
|
|
(relative) path.
|
|
cwd : str
|
|
Path to root of relative path.
|
|
"""
|
|
if os.path.isabs(path):
|
|
return path
|
|
else:
|
|
if not os.path.isabs(cwd):
|
|
cwd = os.path.abspath(cwd)
|
|
return os.path.abspath(
|
|
os.path.join(cwd, path)
|
|
)
|
|
|
|
|
|
def make_dirs(path):
|
|
""" Create directories (equivalent of ``mkdir -p``). """
|
|
if path[-1] == '/':
|
|
parent = os.path.dirname(path[:-1])
|
|
else:
|
|
parent = os.path.dirname(path)
|
|
|
|
if len(parent) > 0:
|
|
if not os.path.exists(parent):
|
|
make_dirs(parent)
|
|
|
|
if not os.path.exists(path):
|
|
os.mkdir(path, 0o777)
|
|
else:
|
|
assert os.path.isdir(path)
|
|
|
|
|
|
def copy(src, dst, only_update=False, copystat=True, cwd=None,
|
|
dest_is_dir=False, create_dest_dirs=False):
|
|
""" Variation of ``shutil.copy`` with extra options.
|
|
|
|
Parameters
|
|
==========
|
|
|
|
src : str
|
|
Path to source file.
|
|
dst : str
|
|
Path to destination.
|
|
only_update : bool
|
|
Only copy if source is newer than destination
|
|
(returns None if it was newer), default: ``False``.
|
|
copystat : bool
|
|
See ``shutil.copystat``. default: ``True``.
|
|
cwd : str
|
|
Path to working directory (root of relative paths).
|
|
dest_is_dir : bool
|
|
Ensures that dst is treated as a directory. default: ``False``
|
|
create_dest_dirs : bool
|
|
Creates directories if needed.
|
|
|
|
Returns
|
|
=======
|
|
|
|
Path to the copied file.
|
|
|
|
"""
|
|
if cwd: # Handle working directory
|
|
if not os.path.isabs(src):
|
|
src = os.path.join(cwd, src)
|
|
if not os.path.isabs(dst):
|
|
dst = os.path.join(cwd, dst)
|
|
|
|
if not os.path.exists(src): # Make sure source file extists
|
|
raise FileNotFoundError("Source: `{}` does not exist".format(src))
|
|
|
|
# We accept both (re)naming destination file _or_
|
|
# passing a (possible non-existent) destination directory
|
|
if dest_is_dir:
|
|
if not dst[-1] == '/':
|
|
dst = dst+'/'
|
|
else:
|
|
if os.path.exists(dst) and os.path.isdir(dst):
|
|
dest_is_dir = True
|
|
|
|
if dest_is_dir:
|
|
dest_dir = dst
|
|
dest_fname = os.path.basename(src)
|
|
dst = os.path.join(dest_dir, dest_fname)
|
|
else:
|
|
dest_dir = os.path.dirname(dst)
|
|
|
|
if not os.path.exists(dest_dir):
|
|
if create_dest_dirs:
|
|
make_dirs(dest_dir)
|
|
else:
|
|
raise FileNotFoundError("You must create directory first.")
|
|
|
|
if only_update:
|
|
# This function is not defined:
|
|
# XXX: This branch is clearly not tested!
|
|
if not missing_or_other_newer(dst, src): # noqa
|
|
return
|
|
|
|
if os.path.islink(dst):
|
|
dst = os.path.abspath(os.path.realpath(dst), cwd=cwd)
|
|
|
|
shutil.copy(src, dst)
|
|
if copystat:
|
|
shutil.copystat(src, dst)
|
|
|
|
return dst
|
|
|
|
Glob = namedtuple('Glob', 'pathname')
|
|
ArbitraryDepthGlob = namedtuple('ArbitraryDepthGlob', 'filename')
|
|
|
|
def glob_at_depth(filename_glob, cwd=None):
|
|
if cwd is not None:
|
|
cwd = '.'
|
|
globbed = []
|
|
for root, dirs, filenames in os.walk(cwd):
|
|
for fn in filenames:
|
|
# This is not tested:
|
|
if fnmatch.fnmatch(fn, filename_glob):
|
|
globbed.append(os.path.join(root, fn))
|
|
return globbed
|
|
|
|
def sha256_of_file(path, nblocks=128):
|
|
""" Computes the SHA256 hash of a file.
|
|
|
|
Parameters
|
|
==========
|
|
|
|
path : string
|
|
Path to file to compute hash of.
|
|
nblocks : int
|
|
Number of blocks to read per iteration.
|
|
|
|
Returns
|
|
=======
|
|
|
|
hashlib sha256 hash object. Use ``.digest()`` or ``.hexdigest()``
|
|
on returned object to get binary or hex encoded string.
|
|
"""
|
|
sh = sha256()
|
|
with open(path, 'rb') as f:
|
|
for chunk in iter(lambda: f.read(nblocks*sh.block_size), b''):
|
|
sh.update(chunk)
|
|
return sh
|
|
|
|
|
|
def sha256_of_string(string):
|
|
""" Computes the SHA256 hash of a string. """
|
|
sh = sha256()
|
|
sh.update(string)
|
|
return sh
|
|
|
|
|
|
def pyx_is_cplus(path):
|
|
"""
|
|
Inspect a Cython source file (.pyx) and look for comment line like:
|
|
|
|
# distutils: language = c++
|
|
|
|
Returns True if such a file is present in the file, else False.
|
|
"""
|
|
with open(path) as fh:
|
|
for line in fh:
|
|
if line.startswith('#') and '=' in line:
|
|
splitted = line.split('=')
|
|
if len(splitted) != 2:
|
|
continue
|
|
lhs, rhs = splitted
|
|
if lhs.strip().split()[-1].lower() == 'language' and \
|
|
rhs.strip().split()[0].lower() == 'c++':
|
|
return True
|
|
return False
|
|
|
|
def import_module_from_file(filename, only_if_newer_than=None):
|
|
""" Imports Python extension (from shared object file)
|
|
|
|
Provide a list of paths in `only_if_newer_than` to check
|
|
timestamps of dependencies. import_ raises an ImportError
|
|
if any is newer.
|
|
|
|
Word of warning: The OS may cache shared objects which makes
|
|
reimporting same path of an shared object file very problematic.
|
|
|
|
It will not detect the new time stamp, nor new checksum, but will
|
|
instead silently use old module. Use unique names for this reason.
|
|
|
|
Parameters
|
|
==========
|
|
|
|
filename : str
|
|
Path to shared object.
|
|
only_if_newer_than : iterable of strings
|
|
Paths to dependencies of the shared object.
|
|
|
|
Raises
|
|
======
|
|
|
|
``ImportError`` if any of the files specified in ``only_if_newer_than`` are newer
|
|
than the file given by filename.
|
|
"""
|
|
path, name = os.path.split(filename)
|
|
name, ext = os.path.splitext(name)
|
|
name = name.split('.')[0]
|
|
if sys.version_info[0] == 2:
|
|
from imp import find_module, load_module
|
|
fobj, filename, data = find_module(name, [path])
|
|
if only_if_newer_than:
|
|
for dep in only_if_newer_than:
|
|
if os.path.getmtime(filename) < os.path.getmtime(dep):
|
|
raise ImportError("{} is newer than {}".format(dep, filename))
|
|
mod = load_module(name, fobj, filename, data)
|
|
else:
|
|
import importlib.util
|
|
spec = importlib.util.spec_from_file_location(name, filename)
|
|
if spec is None:
|
|
raise ImportError("Failed to import: '%s'" % filename)
|
|
mod = importlib.util.module_from_spec(spec)
|
|
spec.loader.exec_module(mod)
|
|
return mod
|
|
|
|
|
|
def find_binary_of_command(candidates):
|
|
""" Finds binary first matching name among candidates.
|
|
|
|
Calls ``which`` from shutils for provided candidates and returns
|
|
first hit.
|
|
|
|
Parameters
|
|
==========
|
|
|
|
candidates : iterable of str
|
|
Names of candidate commands
|
|
|
|
Raises
|
|
======
|
|
|
|
CompilerNotFoundError if no candidates match.
|
|
"""
|
|
from shutil import which
|
|
for c in candidates:
|
|
binary_path = which(c)
|
|
if c and binary_path:
|
|
return c, binary_path
|
|
|
|
raise CompilerNotFoundError('No binary located for candidates: {}'.format(candidates))
|
|
|
|
|
|
def unique_list(l):
|
|
""" Uniquify a list (skip duplicate items). """
|
|
result = []
|
|
for x in l:
|
|
if x not in result:
|
|
result.append(x)
|
|
return result
|