Added an unmodified copy of SCons to third_party.

scons-2.0.1/engine/SCons/compat/_scons_builtins.py

+#
+# 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 5134 2010/08/16 23:02:40 bdeegan"
+
+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: