QGIS/python/plugins/processing/algs/gdal/ogr2ogrclipextent.py

# -*- coding: utf-8 -*-

"""
***************************************************************************
    ogr2ogrclipextent.py
    ---------------------
    Date                 : November 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.                                   *
*                                                                         *
***************************************************************************
"""
from builtins import str

__author__ = 'Victor Olaya'
__date__ = 'November 2012'
__copyright__ = '(C) 2012, Victor Olaya'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'

from processing.core.parameters import ParameterVector
from processing.core.parameters import ParameterString
from processing.core.parameters import ParameterExtent
from processing.core.outputs import OutputVector

from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils

from processing.tools.system import isWindows
from processing.tools.vector import ogrConnectionString, ogrLayerName


class Ogr2OgrClipExtent(GdalAlgorithm):

    OUTPUT_LAYER = 'OUTPUT_LAYER'
    INPUT_LAYER = 'INPUT_LAYER'
    CLIP_EXTENT = 'CLIP_EXTENT'
    OPTIONS = 'OPTIONS'

    def __init__(self):
        super().__init__()
        self.addParameter(ParameterVector(self.INPUT_LAYER,
                                          self.tr('Input layer')))
        self.addParameter(ParameterExtent(self.CLIP_EXTENT,
                                          self.tr('Clip extent')))
        self.addParameter(ParameterString(self.OPTIONS,
                                          self.tr('Additional creation options'), '', optional=True))

        self.addOutput(OutputVector(self.OUTPUT_LAYER, self.tr('Clipped (extent)')))

    def name(self):
        return 'clipvectorsbyextent'

    def displayName(self):
        return self.tr('Clip vectors by extent')

    def group(self):
        return self.tr('Vector geoprocessing')

    def getConsoleCommands(self, parameters):
        inLayer = self.getParameterValue(self.INPUT_LAYER)
        ogrLayer = ogrConnectionString(inLayer)[1:-1]
        clipExtent = self.getParameterValue(self.CLIP_EXTENT)
        if not clipExtent:
            clipExtent = QgsProcessingUtils.combineLayerExtents([inLayer])

        output = self.getOutputFromName(self.OUTPUT_LAYER)
        outFile = output.value

        output = ogrConnectionString(outFile)
        options = str(self.getParameterValue(self.OPTIONS))

        arguments = []
        regionCoords = clipExtent.split(',')
        arguments.append('-spat')
        arguments.append(regionCoords[0])
        arguments.append(regionCoords[2])
        arguments.append(regionCoords[1])
        arguments.append(regionCoords[3])
        arguments.append('-clipsrc spat_extent')

        if options is not None and len(options.strip()) > 0:
            arguments.append(options)

        arguments.append(output)
        arguments.append(ogrLayer)
        arguments.append(ogrLayerName(inLayer))

        commands = []
        if isWindows():
            commands = ['cmd.exe', '/C ', 'ogr2ogr.exe',
                        GdalUtils.escapeAndJoin(arguments)]
        else:
            commands = ['ogr2ogr', GdalUtils.escapeAndJoin(arguments)]

        return commands

    def commandName(self):
        return "ogr2ogr"