upstream/mercurial-mirror Files · mercurial/pycompat.py

setup: detect Python DLL filename from loaded DLL...

setup: detect Python DLL filename from loaded DLL Attempting to build Mercurial from source using MinGW from msys2 on Windows produces a hg.exe that attempts to load e.g. python27.dll. MinGW prefixes its library name with "lib" and adds a period between the major and minor versions. e.g. "libpython2.7.dll." Before this patch, hg.exe files in a MinGW environment would either fail to find a Python DLL or would attempt to load a non-MinGW DLL, which would summarily explode. Either way, hg.exe wouldn't work. This patch improves the code that determines the Python DLL filename to actually use the loaded Python DLL instead of inferring it. Basically we take the handle of the loaded DLL from sys.dllhandle and call a Windows API to try to resolve that handle to a filename.

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      # pycompat.py - portability shim for python 3

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      """Mercurial portability shim for python 3.

      This contains aliases to hide python version-specific details from the core.

      """

      from __future__ import absolute_import

      try:

          import cStringIO as io

          stringio = io.StringIO

      except ImportError:

          import io

          stringio = io.StringIO

      try:

          import Queue as _queue

          _queue.Queue

      except ImportError:

          import queue as _queue

      empty = _queue.Empty

      queue = _queue.Queue

      class _pycompatstub(object):

          pass

      def _alias(alias, origin, items):

          """ populate a _pycompatstub

          copies items from origin to alias

          """

          def hgcase(item):

              return item.replace('_', '').lower()

          for item in items:

              try:

                  setattr(alias, hgcase(item), getattr(origin, item))

              except AttributeError:

                  pass

      urlreq = _pycompatstub()

      urlerr = _pycompatstub()

      try:

          import urllib2

          import urllib

          _alias(urlreq, urllib, (

              "addclosehook",

              "addinfourl",

              "ftpwrapper",

              "pathname2url",

              "quote",

              "splitattr",

              "splitpasswd",

              "splitport",

              "splituser",

              "unquote",

              "url2pathname",

              "urlencode",

              "urlencode",

          ))

          _alias(urlreq, urllib2, (

              "AbstractHTTPHandler",

              "BaseHandler",

              "build_opener",

              "FileHandler",

              "FTPHandler",

              "HTTPBasicAuthHandler",

              "HTTPDigestAuthHandler",

              "HTTPHandler",

              "HTTPPasswordMgrWithDefaultRealm",

              "HTTPSHandler",

              "install_opener",

              "ProxyHandler",

              "Request",

              "urlopen",

          ))

          _alias(urlerr, urllib2, (

              "HTTPError",

              "URLError",

          ))

      except ImportError:

          import urllib.request

          _alias(urlreq, urllib.request, (

              "AbstractHTTPHandler",

              "addclosehook",

              "addinfourl",

              "BaseHandler",

              "build_opener",

              "FileHandler",

              "FTPHandler",

              "ftpwrapper",

              "HTTPHandler",

              "HTTPSHandler",

              "install_opener",

              "pathname2url",

              "HTTPBasicAuthHandler",

              "HTTPDigestAuthHandler",

              "ProxyHandler",

              "quote",

              "Request",

              "splitattr",

              "splitpasswd",

              "splitport",

              "splituser",

              "unquote",

              "url2pathname",

              "urlopen",

          ))

          import urllib.error

          _alias(urlerr, urllib.error, (

              "HTTPError",

              "URLError",

          ))

      try:

          xrange

      except NameError:

          import builtins

          builtins.xrange = range

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				# pycompat.py - portability shim for python 3
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				"""Mercurial portability shim for python 3.

				This contains aliases to hide python version-specific details from the core.
				"""

				from __future__ import absolute_import

				try:
				import cStringIO as io
				stringio = io.StringIO
				except ImportError:
				import io
				stringio = io.StringIO

				try:
				import Queue as _queue
				_queue.Queue
				except ImportError:
				import queue as _queue
				empty = _queue.Empty
				queue = _queue.Queue

				class _pycompatstub(object):
				pass

				def _alias(alias, origin, items):
				""" populate a _pycompatstub

				copies items from origin to alias
				"""
				def hgcase(item):
				return item.replace('_', '').lower()
				for item in items:
				try:
				setattr(alias, hgcase(item), getattr(origin, item))
				except AttributeError:
				pass

				urlreq = _pycompatstub()
				urlerr = _pycompatstub()
				try:
				import urllib2
				import urllib
				_alias(urlreq, urllib, (
				"addclosehook",
				"addinfourl",
				"ftpwrapper",
				"pathname2url",
				"quote",
				"splitattr",
				"splitpasswd",
				"splitport",
				"splituser",
				"unquote",
				"url2pathname",
				"urlencode",
				"urlencode",
				))
				_alias(urlreq, urllib2, (
				"AbstractHTTPHandler",
				"BaseHandler",
				"build_opener",
				"FileHandler",
				"FTPHandler",
				"HTTPBasicAuthHandler",
				"HTTPDigestAuthHandler",
				"HTTPHandler",
				"HTTPPasswordMgrWithDefaultRealm",
				"HTTPSHandler",
				"install_opener",
				"ProxyHandler",
				"Request",
				"urlopen",
				))
				_alias(urlerr, urllib2, (
				"HTTPError",
				"URLError",
				))

				except ImportError:
				import urllib.request
				_alias(urlreq, urllib.request, (
				"AbstractHTTPHandler",
				"addclosehook",
				"addinfourl",
				"BaseHandler",
				"build_opener",
				"FileHandler",
				"FTPHandler",
				"ftpwrapper",
				"HTTPHandler",
				"HTTPSHandler",
				"install_opener",
				"pathname2url",
				"HTTPBasicAuthHandler",
				"HTTPDigestAuthHandler",
				"ProxyHandler",
				"quote",
				"Request",
				"splitattr",
				"splitpasswd",
				"splitport",
				"splituser",
				"unquote",
				"url2pathname",
				"urlopen",
				))
				import urllib.error
				_alias(urlerr, urllib.error, (
				"HTTPError",
				"URLError",
				))

				try:
				xrange
				except NameError:
				import builtins
				builtins.xrange = range