Relative glob excluding. I even don't know how to name it !!!

[dustdfg]

Hello!

I have a problem and can't solve it without hacks.

The following code uses two different approaches. One uses glob function of Dir and works as I expect and the second uses global Glob which internally calls Dir.glob but works differently.

import SCons

env = Environment()

_dir = "src/"

print("========== Dir ===========")
for f in env.Dir(_dir).glob("*.cpp", exclude="*.gen.cpp"):
	print(f)

print("========= Glob ===========")
for f in env.Glob(_dir + "*.cpp", exclude="*.gen.cpp"):
	print(f)

The output is following:

========== Dir ===========
src/f1.cpp
src/f2.cpp
========= Glob ===========
src/f1.cpp
src/f2.cpp
src/f3.gen.cpp
src/f4.gen.cpp

If I change the second example to prepend actual directory to exclude string it works.
for f in env.Glob(_dir + "*.cpp", exclude=_dir + "*.gen.cpp"):

So the problem is that I already receive string src/*.cpp and I need to create hacky invalid Dir env.Dir("src/*.cpp").path_elements[-2].path to get src string or to use os.path.dirname("src/*.cpp") which is more beautiful but still is a workaround.

Is there a way to force env.Glob work like it was called from actual env.glob or do you have any other ideas how to perform it without hacks or mabual filtering of returned list? (I can't change format in which I receive string)

[mwichmann]

You're right. This is because the Node version of Glob uses the directory node of the directory in which we're executing the SConscript, while when you call Dir().glob() explicitly, you're setting the evaluation directory yourself, so everything happens in src. The search for matches accounts for this, but the search for negative matches (excludes) does not - ends up doing the glob for the exclude patterns one level up, and thus not finding them. I'm not sure if this ends up considered a bug or not, but your approach of prepending the dir to the search pattern ends up being "right".