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78 lines
3.3 KiB
Python
78 lines
3.3 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):
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""" Verify if we have the right parameters """
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# Verify upload value
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upload = alg.getParameterValue(u'upload')
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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.getParameterValue(u'column')
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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.getParameterValue(u'{}_type'.format(geom))
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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):
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# We temporary remove the output 'from_output'
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fromOutput = alg.getOutputFromName(u'from_output')
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fromParam = alg.getParameterValue(u'from')
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alg.exportedLayers[fromOutput.value] = alg.exportedLayers[fromParam]
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alg.removeOutputFromName(u'from_output')
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alg.processCommand()
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# We re-add the new output
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alg.addOutput(fromOutput)
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def processOutputs(alg):
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# Output results ('from' table and output table)
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for output in [u'from_output', u'output']:
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out = alg.getOutputValue(output)
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command = u"v.out.ogr -c type=auto -s -e input={} output=\"{}\" format=ESRI_Shapefile output_layer={}".format(
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alg.exportedLayers[out],
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os.path.dirname(out),
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os.path.basename(out)[:-4]
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)
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alg.commands.append(command)
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alg.outputCommands.append(command)
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