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42 lines
2.0 KiB
Python
42 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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r_drain.py
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----------
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Date : February 2016
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Copyright : (C) 2016 by Médéric Ribreux
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Email : medspx at medspx dot fr
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Médéric Ribreux'
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__date__ = 'February 2016'
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__copyright__ = '(C) 2016, Médéric Ribreux'
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def checkParameterValuesBeforeExecuting(alg, parameters, context):
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""" Verify if we have the right parameters """
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# start_coordinates and start_points are mutually exclusives
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if (alg.parameterAsString(parameters, 'start_coordinates', context)
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and alg.parameterAsVectorLayer(parameters, 'start_points', context)):
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return False, alg.tr("You need to set either start coordinates OR a start points vector layer!")
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# You need to set at least one parameter
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if (not alg.parameterAsString(parameters, 'start_coordinates', context)
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and not alg.parameterAsVectorLayer(parameters, 'start_points', context)):
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return False, alg.tr("You need to set either start coordinates OR a start points vector layer!")
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paramscore = [f for f in ['-c', '-a', '-n']
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if alg.parameterAsBoolean(parameters, f, context)]
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if len(paramscore) > 1:
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return False, alg.tr("-c, -a, -n parameters are mutually exclusive!")
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return True, None
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