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2da85f8771
While the processing API is in such a state of flux it's become unmaintainable to port these algorithms change-by-change. Instead, disable them all until the API is fixed, and then we can port them algorithm by algorithm and reactivate each test in turn.
259 lines
11 KiB
Python
Executable File
259 lines
11 KiB
Python
Executable File
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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Processing.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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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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from __future__ import print_function
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from builtins import str
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from builtins import object
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__author__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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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import traceback
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from qgis.PyQt.QtCore import Qt, QCoreApplication
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from qgis.PyQt.QtWidgets import QApplication
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from qgis.PyQt.QtGui import QCursor
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from qgis.utils import iface
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from qgis.core import (QgsMessageLog,
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QgsApplication,
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QgsProcessingProvider,
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QgsProcessingUtils)
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import processing
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from processing.script.ScriptUtils import ScriptUtils
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from processing.core.ProcessingConfig import ProcessingConfig
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.gui.MessageBarProgress import MessageBarProgress
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from processing.gui.RenderingStyles import RenderingStyles
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from processing.gui.Postprocessing import handleAlgorithmResults
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from processing.gui.AlgorithmExecutor import execute
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from processing.tools import dataobjects
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from processing.modeler.ModelerAlgorithmProvider import ModelerAlgorithmProvider # NOQA
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#from processing.algs.qgis.QGISAlgorithmProvider import QGISAlgorithmProvider # NOQA
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#from processing.algs.grass7.Grass7AlgorithmProvider import Grass7AlgorithmProvider # NOQA
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#from processing.algs.gdal.GdalAlgorithmProvider import GdalAlgorithmProvider # NOQA
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#from processing.algs.saga.SagaAlgorithmProvider import SagaAlgorithmProvider # NOQA
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#from processing.script.ScriptAlgorithmProvider import ScriptAlgorithmProvider # NOQA
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#from processing.preconfigured.PreconfiguredAlgorithmProvider import PreconfiguredAlgorithmProvider # NOQA
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class Processing(object):
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BASIC_PROVIDERS = []
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@staticmethod
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def activateProvider(providerOrName, activate=True):
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provider_id = providerOrName.id() if isinstance(providerOrName, QgsProcessingProvider) else providerOrName
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provider = QgsApplication.processingRegistry().providerById(provider_id)
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try:
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provider.setActive(True)
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provider.refreshAlgorithms()
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except:
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# provider could not be activated
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QgsMessageLog.logMessage(Processing.tr('Error: Provider {0} could not be activated\n').format(provider_id),
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Processing.tr("Processing"))
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@staticmethod
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def initialize():
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if "model" in [p.id() for p in QgsApplication.processingRegistry().providers()]:
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return
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# Add the basic providers
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for c in QgsProcessingProvider.__subclasses__():
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p = c()
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Processing.BASIC_PROVIDERS.append(p)
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QgsApplication.processingRegistry().addProvider(p)
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# And initialize
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ProcessingConfig.initialize()
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ProcessingConfig.readSettings()
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RenderingStyles.loadStyles()
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@staticmethod
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def deinitialize():
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for p in Processing.BASIC_PROVIDERS:
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QgsApplication.processingRegistry().removeProvider(p)
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Processing.BASIC_PROVIDERS = []
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@staticmethod
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def addScripts(folder):
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Processing.initialize()
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provider = QgsApplication.processingRegistry().providerById("qgis")
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scripts = ScriptUtils.loadFromFolder(folder)
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# fix_print_with_import
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print(scripts)
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for script in scripts:
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script.allowEdit = False
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script._icon = provider._icon
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provider.externalAlgs.extend(scripts)
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provider.refreshAlgorithms()
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@staticmethod
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def removeScripts(folder):
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provider = QgsApplication.processingRegistry().providerById("qgis")
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for alg in provider.externalAlgs[::-1]:
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path = os.path.dirname(alg.descriptionFile)
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if path == folder:
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provider.externalAlgs.remove(alg)
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provider.refreshAlgorithms()
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@staticmethod
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def runAlgorithm(algOrName, onFinish, *args, **kwargs):
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if isinstance(algOrName, GeoAlgorithm):
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alg = algOrName
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else:
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alg = QgsApplication.processingRegistry().algorithmById(algOrName)
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if alg is None:
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# fix_print_with_import
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print('Error: Algorithm not found\n')
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QgsMessageLog.logMessage(Processing.tr('Error: Algorithm {0} not found\n').format(algOrName),
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Processing.tr("Processing"))
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return
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# hack - remove when getCopy is removed
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provider = alg.provider()
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alg = alg.getCopy()
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#hack pt2
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alg.setProvider(provider)
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if len(args) == 1 and isinstance(args[0], dict):
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# Set params by name and try to run the alg even if not all parameter values are provided,
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# by using the default values instead.
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setParams = []
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for (name, value) in list(args[0].items()):
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param = alg.getParameterFromName(name)
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if param and param.setValue(value):
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setParams.append(name)
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continue
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output = alg.getOutputFromName(name)
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if output and output.setValue(value):
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continue
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# fix_print_with_import
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print('Error: Wrong parameter value %s for parameter %s.' % (value, name))
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QgsMessageLog.logMessage(
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Processing.tr('Error: Wrong parameter value {0} for parameter {1}.').format(value, name),
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Processing.tr("Processing"))
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QgsMessageLog.logMessage(Processing.tr('Error in {0}. Wrong parameter value {1} for parameter {2}.').format(
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alg.name(), value, name
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), Processing.tr("Processing"),
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QgsMessageLog.CRITICAL
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)
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return
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# fill any missing parameters with default values if allowed
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for param in alg.parameters:
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if param.name not in setParams:
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if not param.setDefaultValue():
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# fix_print_with_import
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print('Error: Missing parameter value for parameter %s.' % param.name)
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QgsMessageLog.logMessage(
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Processing.tr('Error: Missing parameter value for parameter {0}.').format(param.name),
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Processing.tr("Processing"))
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return
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else:
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if len(args) != alg.getVisibleParametersCount() + alg.getVisibleOutputsCount():
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# fix_print_with_import
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print('Error: Wrong number of parameters')
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QgsMessageLog.logMessage(Processing.tr('Error: Wrong number of parameters'),
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Processing.tr("Processing"))
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processing.algorithmHelp(algOrName)
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return
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i = 0
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for param in alg.parameters:
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if not param.hidden:
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if not param.setValue(args[i]):
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# fix_print_with_import
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print('Error: Wrong parameter value: ' + str(args[i]))
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QgsMessageLog.logMessage(Processing.tr('Error: Wrong parameter value: ') + str(args[i]),
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Processing.tr("Processing"))
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return
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i = i + 1
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for output in alg.outputs:
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if not output.hidden:
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if not output.setValue(args[i]):
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# fix_print_with_import
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print('Error: Wrong output value: ' + str(args[i]))
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QgsMessageLog.logMessage(Processing.tr('Error: Wrong output value: ') + str(args[i]),
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Processing.tr("Processing"))
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return
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i = i + 1
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context = None
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if kwargs is not None and 'context' in list(kwargs.keys()):
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context = kwargs["context"]
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else:
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context = dataobjects.createContext()
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msg = alg._checkParameterValuesBeforeExecuting(context)
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if msg:
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# fix_print_with_import
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print('Unable to execute algorithm\n' + str(msg))
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QgsMessageLog.logMessage(Processing.tr('Unable to execute algorithm\n{0}').format(msg),
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Processing.tr("Processing"))
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return
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if not alg.checkInputCRS(context):
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print('Warning: Not all input layers use the same CRS.\n' +
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'This can cause unexpected results.')
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QgsMessageLog.logMessage(
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Processing.tr('Warning: Not all input layers use the same CRS.\nThis can cause unexpected results.'),
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Processing.tr("Processing"))
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# Don't set the wait cursor twice, because then when you
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# restore it, it will still be a wait cursor.
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overrideCursor = False
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if iface is not None:
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cursor = QApplication.overrideCursor()
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if cursor is None or cursor == 0:
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QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
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overrideCursor = True
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elif cursor.shape() != Qt.WaitCursor:
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QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
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overrideCursor = True
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feedback = None
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if kwargs is not None and "feedback" in list(kwargs.keys()):
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feedback = kwargs["feedback"]
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elif iface is not None:
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feedback = MessageBarProgress(alg.displayName())
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ret = execute(alg, context, feedback)
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if ret:
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if onFinish is not None:
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onFinish(alg, context, feedback)
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else:
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QgsMessageLog.logMessage(Processing.tr("There were errors executing the algorithm."),
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Processing.tr("Processing"))
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if overrideCursor:
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QApplication.restoreOverrideCursor()
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if isinstance(feedback, MessageBarProgress):
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feedback.close()
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return alg
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@staticmethod
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def tr(string, context=''):
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if context == '':
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context = 'Processing'
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return QCoreApplication.translate(context, string)
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