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# Copyright (C) 2015 Chintalagiri Shashank 

# 

# This file is part of Tendril. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU Affero General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 

# GNU Affero General Public License for more details. 

# 

# You should have received a copy of the GNU Affero General Public License 

# along with this program.  If not, see <http://www.gnu.org/licenses/>. 

""" 

This file is part of tendril 

See the COPYING, README, and INSTALL files for more information 

""" 

 

import os 

 

from tendril.utils.config import TENDRIL_ROOT 

 

 

def create_motif_object(motifst): 

    modname = motifst.split('.')[0] 

    modstr = 'tendril.conventions.motifs.' + modname 

    clsname = 'Motif' + modname 

    try: 

        mod = __import__(modstr, fromlist=[clsname]) 

        cls = getattr(mod, clsname) 

        instance = cls(motifst) 

        return instance 

    except (ImportError, AttributeError): 

        raise ValueError("Motif Unrecognized :" + motifst) 

 

 

def get_motifs_list(): 

    motifspath = os.path.join(TENDRIL_ROOT, 'conventions', 'motifs') 

    candidates = [f for f in os.listdir(motifspath) 

                  if os.path.isfile(os.path.join(motifspath, f))] 

 

    motifs = [] 

    for candidate in candidates: 

        name, ext = os.path.splitext(candidate) 

        if ext == '.py': 

            try: 

                create_motif_object(name + '.1') 

                motifs.append(name) 

            except ValueError: 

                pass 

 

    return motifs