QGIS/python/plugins/processing/algs/gdal/GdalAlgorithm.py

103 lines
3.9 KiB
Python

# -*- coding: utf-8 -*-
"""
***************************************************************************
GdalAlgorithm.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import os
import re
from qgis.PyQt.QtCore import QUrl
from qgis.core import (QgsApplication,
QgsVectorFileWriter,
QgsProcessingUtils,
QgsProject)
from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.algs.gdal.GdalAlgorithmDialog import GdalAlgorithmDialog
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.tools import dataobjects
pluginPath = os.path.normpath(os.path.join(
os.path.split(os.path.dirname(__file__))[0], os.pardir))
class GdalAlgorithm(GeoAlgorithm):
def __init__(self):
GeoAlgorithm.__init__(self)
def icon(self):
return QgsApplication.getThemeIcon("/providerGdal.svg")
def svgIconPath(self):
return QgsApplication.iconPath("providerGdal.svg")
def createCustomParametersWidget(self, parent):
return GdalAlgorithmDialog(self)
def processAlgorithm(self, context, feedback):
commands = self.getConsoleCommands()
layers = QgsProcessingUtils.compatibleVectorLayers(QgsProject.instance())
supported = QgsVectorFileWriter.supportedFormatExtensions()
for i, c in enumerate(commands):
for layer in layers:
if layer.source() in c:
exported = dataobjects.exportVectorLayer(layer, supported)
exportedFileName = os.path.splitext(os.path.split(exported)[1])[0]
c = c.replace(layer.source(), exported)
if os.path.isfile(layer.source()):
fileName = os.path.splitext(os.path.split(layer.source())[1])[0]
c = re.sub('[\s]{}[\s]'.format(fileName), ' ' + exportedFileName + ' ', c)
c = re.sub('[\s]{}'.format(fileName), ' ' + exportedFileName, c)
c = re.sub('["\']{}["\']'.format(fileName), "'" + exportedFileName + "'", c)
commands[i] = c
GdalUtils.runGdal(commands, feedback)
def shortHelp(self):
helpPath = GdalUtils.gdalHelpPath()
if helpPath == '':
return
if os.path.exists(helpPath):
url = QUrl.fromLocalFile(os.path.join(helpPath, '{}.html'.format(self.commandName()))).toString()
else:
url = helpPath + '{}.html'.format(self.commandName())
return self._formatHelp('''This algorithm is based on the GDAL {} module.
For more info, see the <a href={}> module help</a>
'''.format(self.commandName(), url))
def commandName(self):
for output in self.outputs:
output.setValue("dummy")
for param in self.parameters:
param.setValue("1")
name = self.getConsoleCommands()[0]
if name.endswith(".py"):
name = name[:-3]
return name