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67 lines
3.0 KiB
Python
67 lines
3.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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v_distance.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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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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import os
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def checkParameterValuesBeforeExecuting(alg, parameters, context):
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""" Verify if we have the right parameters """
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# Verify upload value
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upload = alg.parameterAsString(parameters, 'upload', context)
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if upload:
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uploadList = [f for f in upload.split(",") if f not in ['cat', 'dist', 'to_x', 'to_y', 'to_along', 'to_angle', 'to_attr']]
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if len(uploadList) > 0:
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return alg.tr(u"Upload parameters should be a list of elements taken in the following values:\n'cat', 'dist', 'to_x', 'to_y', 'to_along', 'to_angle', 'to_attr'")
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# Verifiy that we have the good number of columns
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column = alg.parameterAsString(parameters, 'column', context)
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if ((column is None or len(column) == 0) and upload) or (len(column.split(",")) != len(upload.split(","))):
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return alg.tr(u"The number of columns and the number of upload parameters should be equal!")
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# Verify from_type and to_type values
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for geom in [u'from', u'to']:
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geoType = alg.parameterAsString(parameters, '{}_type'.format(geom), context)
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if geoType:
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geoTypeList = [f for f in geoType.split(",") if f not in ['point', 'line', 'boundary', 'centroid', 'area']]
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if len(geoTypeList) > 0:
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return alg.tr(u"Feature type for '{}' should be a list of elements taken in the following values:\n'point', 'line', 'boundary', 'centroid', 'area'".format(geom))
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return None
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def processCommand(alg, parameters, context):
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# We do not incorporate outputs in commands
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alg.processCommand(parameters, context, True)
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def processOutputs(alg, parameters, context):
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alg.vectorOutputType(parameters, context)
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alg.exportVectorLayerFromParameter('output', parameters, context)
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# for from_output, we export the initial layer
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fileName = alg.parameterAsOutputLayer(parameters, 'from_output', context)
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grassName = alg.exportedLayers['from']
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alg.exportVectorLayer(grassName, fileName)
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