# sconscript.py
# Eryn Wells <eryn@erynwells.me>

'''
SCons tool for working with SConscripts.
'''

import SCons.Script

def _do_sconscript(env):
    original_sconscript = env.SConscript

    def sconscript(env, sconscript, clone=False, *args, **kwargs):
        exports = {'Library': env.Library,
                   'StaticLibrary': env.StaticLibrary,
                   'SharedLibrary': env.SharedLibrary,
                   'Program': env.Program,

                   'Append': env.Append,
                   'Replace': env.Replace}
        SCons.Script._SConscript.GlobalDict.update(exports)
        env.log('Reading {}'.format(sconscript))
        return original_sconscript(sconscript,
                                   {'env': env.Clone() if clone else env},
                                   *args,
                                   **kwargs)

    return sconscript

#
# SCons tool interface
#

def generate(env):
    env.AddMethod(_do_sconscript(env), 'SConscript')


def exists(env):
    return True