Re: untar builder fails with error

Greetings Bill,

unfortunatly no, I'm bounded to distros with scons 3.1.2

what strikes me strange is that the unpack works, the issue is with the emitter alone

Dagg

Sent: Friday, November 04, 2022 at 6:26 PM

From: "Bill Deegan" <[email protected]>

To: "SCons users mailing list" <[email protected]>

Subject: Re: [Scons-users] untar builder fails with error

Dagg,

Can you try with SCons 4.4.0?

-Bill

On Fri, Nov 4, 2022 at 10:42 AM Mats Wichmann <[email protected] > wrote:

On 11/4/22 08:33, daggs wrote:

> Greetings,

>

> I"m trying to implement the untar builder from https://github.com/SCons/scons/wiki/UnTarBuilder on scons v3.1.2.bee7caf9defd6e108fc2998a2520ddb36a967691 (ubuntu 20.04)

> and I'm getting this error:

> AttributeError: 'TarInfo' object has no attribute 'target_peers':

> File "/home/dagg/project/site_scons/build_utils.py", line 471:

> env.Unpack(get_target(), deps_targets_list,

> File "/usr/lib/scons/SCons/Environment.py", line 255:

> return MethodWrapper.__call__(self, target, source, *args, **kw)

> File "/usr/lib/scons/SCons/Environment.py", line 219:

> return self.method(*nargs, **kwargs)

> File "/usr/lib/scons/SCons/Builder.py", line 651:

> return self._execute(env, target, source, OverrideWarner(kw), ekw)

> File "/usr/lib/scons/SCons/Builder.py", line 570:

> t.target_peers = tlist

> Compilation failed

>

> has anyone encountered this issue? I cannot seem to be able to find target_peers in reference to python anywhere

>

> the builder looks like this:

> import tarfile, os

>

> def message(target, source, env):

> return "Unpacking..."

>

> def builder(target, source, env):

> tar_file = tarfile.open(env['path'])

> tar_file.extractall(env['target'])

> tar_file.close()

>

> return None

>

> def content_emitter(target, source, env):

> fn = os.path.basename(str(source[0]))

> print("Reading content...")

> tar_file = tarfile.open(str(source[0]), "r")

> new_targets = [ ent for ent in tar_file.getmembers() if ent.isfile() ]

> tar_file.close()

> print("Done")

>

> return (new_targets, source)

>

> def generate(env, **kwargs):

> unpacker = env.Builder(

> action = env.Action(builder, message),

> src_suffix = ".tar.bz2",

> emitter = content_emitter,

> )

>

> env.Append(BUILDERS = { 'Unpack' : unpacker })

>

> def exists(env):

> return True

>

> Thanks,

>

> dagg

I've used (a fork of) that one, but it's not been for like six years.

Current scons certainly has a target_peers in the node class, and it's

actively used by the ninja tool. Ninja support, of course, is much newer

than SCons 3.1.2 - can't really tell the history without more

prospecting, maybe someone else knows.

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