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"""SCons.Util
Various utility functions go here.
"""
#
# Copyright (c) 2001 Steven Knight
#
# 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.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import types
import string
import SCons.Node.FS
def scons_str2nodes(arg, node_factory=SCons.Node.FS.default_fs.File):
"""This function converts a string or list into a list of Node instances.
It follows the rules outlined in the SCons design document by accepting
any of the following inputs:
- A single string containing names separated by spaces. These will be
split apart at the spaces.
- A single Node instance,
- A list containingg either strings or Node instances. Any strings
in the list are not split at spaces.
In all cases, the function returns a list of Node instances."""
narg = arg
if type(arg) is types.StringType:
narg = string.split(arg)
elif type(arg) is not types.ListType:
narg = [arg]
nodes = []
for v in narg:
if type(v) is types.StringType:
nodes.append(node_factory(v))
# Do we enforce the following restriction? Maybe, but it
# also restricts what we can do for allowing people to
# use the engine with alternate Node implementations...
# Perhaps this should be split in two, with the SCons.Node
# logic in a wrapper somewhere under SCons.Node, and the
# string-parsing logic here...?
#elif not issubclass(v.__class__, SCons.Node.Node):
# raise TypeError
else:
nodes.append(v)
return nodes
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