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import sys, os
class VerificationError(Exception):
""" An error raised when verification fails
"""
class VerificationMissing(Exception):
""" An error raised when incomplete structures are passed into
cdef, but no verification has been done
"""
LIST_OF_FILE_NAMES = ['sources', 'include_dirs', 'library_dirs',
'extra_objects', 'depends']
def get_extension(srcfilename, modname, sources=(), **kwds):
from distutils.core import Extension
allsources = [srcfilename]
for src in sources:
allsources.append(os.path.normpath(src))
return Extension(name=modname, sources=allsources, **kwds)
def compile(tmpdir, ext, compiler_verbose=0):
"""Compile a C extension module using distutils."""
saved_environ = os.environ.copy()
try:
outputfilename = _build(tmpdir, ext, compiler_verbose)
outputfilename = os.path.abspath(outputfilename)
finally:
# workaround for a distutils bugs where some env vars can
# become longer and longer every time it is used
for key, value in saved_environ.items():
if os.environ.get(key) != value:
os.environ[key] = value
return outputfilename
def _build(tmpdir, ext, compiler_verbose=0):
# XXX compact but horrible :-(
from distutils.core import Distribution
import distutils.errors, distutils.log
#
dist = Distribution({'ext_modules': [ext]})
dist.parse_config_files()
options = dist.get_option_dict('build_ext')
options['force'] = ('ffiplatform', True)
options['build_lib'] = ('ffiplatform', tmpdir)
options['build_temp'] = ('ffiplatform', tmpdir)
#
try:
old_level = distutils.log.set_threshold(0) or 0
try:
distutils.log.set_verbosity(compiler_verbose)
dist.run_command('build_ext')
cmd_obj = dist.get_command_obj('build_ext')
[soname] = cmd_obj.get_outputs()
finally:
distutils.log.set_threshold(old_level)
except (distutils.errors.CompileError,
distutils.errors.LinkError) as e:
raise VerificationError('%s: %s' % (e.__class__.__name__, e))
#
return soname
try:
from os.path import samefile
except ImportError:
def samefile(f1, f2):
return os.path.abspath(f1) == os.path.abspath(f2)
def maybe_relative_path(path):
if not os.path.isabs(path):
return path # already relative
dir = path
names = []
while True:
prevdir = dir
dir, name = os.path.split(prevdir)
if dir == prevdir or not dir:
return path # failed to make it relative
names.append(name)
try:
if samefile(dir, os.curdir):
names.reverse()
return os.path.join(*names)
except OSError:
pass
# ____________________________________________________________
try:
int_or_long = (int, long)
import cStringIO
except NameError:
int_or_long = int # Python 3
import io as cStringIO
def _flatten(x, f):
if isinstance(x, str):
f.write('%ds%s' % (len(x), x))
elif isinstance(x, dict):
keys = sorted(x.keys())
f.write('%dd' % len(keys))
for key in keys:
_flatten(key, f)
_flatten(x[key], f)
elif isinstance(x, (list, tuple)):
f.write('%dl' % len(x))
for value in x:
_flatten(value, f)
elif isinstance(x, int_or_long):
f.write('%di' % (x,))
else:
raise TypeError(
"the keywords to verify() contains unsupported object %r" % (x,))
def flatten(x):
f = cStringIO.StringIO()
_flatten(x, f)
return f.getvalue()