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authorLuca Falavigna <dktrkranz@debian.org>2010-06-15 09:21:32 +0000
committerLuca Falavigna <dktrkranz@debian.org>2010-06-15 09:21:32 +0000
commit07fc59e19636a4fc97a18b2038f3fe1c72a94000 (patch)
tree79d4a6239d81b2ccb4752d4f5ca25e0a7d3b4d4b /engine/SCons/compat/_scons_builtins.py
parent7f642861f3946d4241cbd668de258293ba92767a (diff)
parent340d57481935334465037d97c0db1555b70c0eb1 (diff)
Merge commit 'upstream/2.0.0'
Diffstat (limited to 'engine/SCons/compat/_scons_builtins.py')
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diff --git a/engine/SCons/compat/_scons_builtins.py b/engine/SCons/compat/_scons_builtins.py
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+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 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.
+#
+
+# Portions of the following are derived from the compat.py file in
+# Twisted, under the following copyright:
+#
+# Copyright (c) 2001-2004 Twisted Matrix Laboratories
+
+__doc__ = """
+Compatibility idioms for builtins names
+
+This module adds names to the builtins module for things that we want
+to use in SCons but which don't show up until later Python versions than
+the earliest ones we support.
+
+This module checks for the following builtins names:
+
+ all()
+ any()
+ sorted()
+ memoryview()
+
+Implementations of functions 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.)
+
+If you're looking at this with pydoc and various names don't show up in
+the FUNCTIONS or DATA output, that means those names are already built in
+to this version of Python and we don't need to add them from this module.
+"""
+
+__revision__ = "src/engine/SCons/compat/_scons_builtins.py 5023 2010/06/14 22:05:46 scons"
+
+import builtins
+
+try:
+ all
+except NameError:
+ # Pre-2.5 Python has no all() function.
+ def all(iterable):
+ """
+ Returns True if all elements of the iterable are true.
+ """
+ for element in iterable:
+ if not element:
+ return False
+ return True
+ builtins.all = all
+ all = all
+
+try:
+ any
+except NameError:
+ # Pre-2.5 Python has no any() function.
+ def any(iterable):
+ """
+ Returns True if any element of the iterable is true.
+ """
+ for element in iterable:
+ if element:
+ return True
+ return False
+ builtins.any = any
+ any = any
+
+try:
+ memoryview
+except NameError:
+ # Pre-2.7 doesn't have the memoryview() built-in.
+ class memoryview(object):
+ def __init__(self, obj):
+ # wrapping buffer in () keeps the fixer from changing it
+ self.obj = (buffer)(obj)
+ def __getitem__(self, indx):
+ if isinstance(indx, slice):
+ return self.obj[indx.start:indx.stop]
+ else:
+ return self.obj[indx]
+ builtins.memoryview = memoryview
+
+try:
+ sorted
+except NameError:
+ # Pre-2.4 Python has no sorted() function.
+ #
+ # The pre-2.4 Python list.sort() method does not support
+ # list.sort(key=) nor list.sort(reverse=) keyword arguments, so
+ # we must implement the functionality of those keyword arguments
+ # by hand instead of passing them to list.sort().
+ def sorted(iterable, cmp=None, key=None, reverse=False):
+ if key is not None:
+ result = [(key(x), x) for x in iterable]
+ else:
+ result = iterable[:]
+ if cmp is None:
+ # Pre-2.3 Python does not support list.sort(None).
+ result.sort()
+ else:
+ result.sort(cmp)
+ if key is not None:
+ result = [t1 for t0,t1 in result]
+ if reverse:
+ result.reverse()
+ return result
+ builtins.sorted = sorted
+
+#if sys.version_info[:3] in ((2, 2, 0), (2, 2, 1)):
+# def lstrip(s, c=string.whitespace):
+# while s and s[0] in c:
+# s = s[1:]
+# return s
+# def rstrip(s, c=string.whitespace):
+# while s and s[-1] in c:
+# s = s[:-1]
+# return s
+# def strip(s, c=string.whitespace, l=lstrip, r=rstrip):
+# return l(r(s, c), c)
+#
+# object.__setattr__(str, 'lstrip', lstrip)
+# object.__setattr__(str, 'rstrip', rstrip)
+# object.__setattr__(str, 'strip', strip)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: