--- /dev/null
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__doc__ = """
+SCons compatibility package for old Python versions
+
+This subpackage holds modules that provide backwards-compatible
+implementations of various things that we'd like to use in SCons but which
+only show up in later versions of Python than the early, old version(s)
+we still support.
+
+Other code will not generally reference things in this package through
+the SCons.compat namespace. The modules included here add things to
+the __builtin__ namespace or the global module list so that the rest
+of our code can use the objects and names imported here regardless of
+Python version.
+
+Simply enough, things that go in the __builtin__ name space come from
+our builtins module.
+
+The rest of the things here will be in individual compatibility modules
+that are either: 1) suitably modified copies of the future modules that
+we want to use; or 2) backwards compatible re-implementations of the
+specific portions of a future module's API that we want to use.
+
+GENERAL WARNINGS: Implementations of functions in the SCons.compat
+modules are *NOT* guaranteed to be fully compliant with these functions in
+later versions of Python. We are only concerned with adding functionality
+that we actually use in SCons, so be wary if you lift this code for
+other uses. (That said, making these more nearly the same as later,
+official versions is still a desirable goal, we just don't need to be
+obsessive about it.)
+
+We name the compatibility modules with an initial '_scons_' (for example,
+_scons_subprocess.py is our compatibility module for subprocess) so
+that we can still try to import the real module name and fall back to
+our compatibility module if we get an ImportError. The import_as()
+function defined below loads the module as the "real" name (without the
+'_scons'), after which all of the "import {module}" statements in the
+rest of our code will find our pre-loaded compatibility module.
+"""
+
+__revision__ = "src/engine/SCons/compat/__init__.py 3842 2008/12/20 22:59:52 scons"
+
+def import_as(module, name):
+ """
+ Imports the specified module (from our local directory) as the
+ specified name.
+ """
+ import imp
+ import os.path
+ dir = os.path.split(__file__)[0]
+ file, filename, suffix_mode_type = imp.find_module(module, [dir])
+ imp.load_module(name, file, filename, suffix_mode_type)
+
+import builtins
+
+try:
+ import hashlib
+except ImportError:
+ # Pre-2.5 Python has no hashlib module.
+ try:
+ import_as('_scons_hashlib', 'hashlib')
+ except ImportError:
+ # If we failed importing our compatibility module, it probably
+ # means this version of Python has no md5 module. Don't do
+ # anything and let the higher layer discover this fact, so it
+ # can fall back to using timestamp.
+ pass
+
+try:
+ set
+except NameError:
+ # Pre-2.4 Python has no native set type
+ try:
+ # Python 2.2 and 2.3 can use the copy of the 2.[45] sets module
+ # that we grabbed.
+ import_as('_scons_sets', 'sets')
+ except (ImportError, SyntaxError):
+ # Python 1.5 (ImportError, no __future_ module) and 2.1
+ # (SyntaxError, no generators in __future__) will blow up
+ # trying to import the 2.[45] sets module, so back off to a
+ # custom sets module that can be discarded easily when we
+ # stop supporting those versions.
+ import_as('_scons_sets15', 'sets')
+ import __builtin__
+ import sets
+ __builtin__.set = sets.Set
+
+import fnmatch
+try:
+ fnmatch.filter
+except AttributeError:
+ # Pre-2.2 Python has no fnmatch.filter() function.
+ def filter(names, pat):
+ """Return the subset of the list NAMES that match PAT"""
+ import os,posixpath
+ result=[]
+ pat = os.path.normcase(pat)
+ if not fnmatch._cache.has_key(pat):
+ import re
+ res = fnmatch.translate(pat)
+ fnmatch._cache[pat] = re.compile(res)
+ match = fnmatch._cache[pat].match
+ if os.path is posixpath:
+ # normcase on posix is NOP. Optimize it away from the loop.
+ for name in names:
+ if match(name):
+ result.append(name)
+ else:
+ for name in names:
+ if match(os.path.normcase(name)):
+ result.append(name)
+ return result
+ fnmatch.filter = filter
+ del filter
+
+try:
+ import itertools
+except ImportError:
+ # Pre-2.3 Python has no itertools module.
+ import_as('_scons_itertools', 'itertools')
+
+# If we need the compatibility version of textwrap, it must be imported
+# before optparse, which uses it.
+try:
+ import textwrap
+except ImportError:
+ # Pre-2.3 Python has no textwrap module.
+ import_as('_scons_textwrap', 'textwrap')
+
+try:
+ import optparse
+except ImportError:
+ # Pre-2.3 Python has no optparse module.
+ import_as('_scons_optparse', 'optparse')
+
+import os
+try:
+ os.devnull
+except AttributeError:
+ # Pre-2.4 Python has no os.devnull attribute
+ import sys
+ _names = sys.builtin_module_names
+ if 'posix' in _names:
+ os.devnull = '/dev/null'
+ elif 'nt' in _names:
+ os.devnull = 'nul'
+ os.path.devnull = os.devnull
+
+import shlex
+try:
+ shlex.split
+except AttributeError:
+ # Pre-2.3 Python has no shlex.split() function.
+ #
+ # The full white-space splitting semantics of shlex.split() are
+ # complicated to reproduce by hand, so just use a compatibility
+ # version of the shlex module cribbed from Python 2.5 with some
+ # minor modifications for older Python versions.
+ del shlex
+ import_as('_scons_shlex', 'shlex')
+
+
+import shutil
+try:
+ shutil.move
+except AttributeError:
+ # Pre-2.3 Python has no shutil.move() function.
+ #
+ # Cribbed from Python 2.5.
+ import os
+
+ def move(src, dst):
+ """Recursively move a file or directory to another location.
+
+ If the destination is on our current filesystem, then simply use
+ rename. Otherwise, copy src to the dst and then remove src.
+ A lot more could be done here... A look at a mv.c shows a lot of
+ the issues this implementation glosses over.
+
+ """
+ try:
+ os.rename(src, dst)
+ except OSError:
+ if os.path.isdir(src):
+ if shutil.destinsrc(src, dst):
+ raise Error, "Cannot move a directory '%s' into itself '%s'." % (src, dst)
+ shutil.copytree(src, dst, symlinks=True)
+ shutil.rmtree(src)
+ else:
+ shutil.copy2(src,dst)
+ os.unlink(src)
+ shutil.move = move
+ del move
+
+ def destinsrc(src, dst):
+ src = os.path.abspath(src)
+ return os.path.abspath(dst)[:len(src)] == src
+ shutil.destinsrc = destinsrc
+ del destinsrc
+
+
+try:
+ import subprocess
+except ImportError:
+ # Pre-2.4 Python has no subprocess module.
+ import_as('_scons_subprocess', 'subprocess')
+
+import sys
+try:
+ sys.version_info
+except AttributeError:
+ # Pre-1.6 Python has no sys.version_info
+ import string
+ version_string = string.split(sys.version)[0]
+ version_ints = map(int, string.split(version_string, '.'))
+ sys.version_info = tuple(version_ints + ['final', 0])
+
+try:
+ import UserString
+except ImportError:
+ # Pre-1.6 Python has no UserString module.
+ import_as('_scons_UserString', 'UserString')
projects / senf.git / blobdiff