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GrassAlgorithmProvider.py
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GrassAlgorithmProvider.py
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# -*- coding: utf-8 -*-
"""
***************************************************************************
GrassAlgorithmProvider.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. *
* *
***************************************************************************
"""
from sextante.grass.nviz import nviz
__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
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from sextante.core.SextanteConfig import SextanteConfig, Setting
from sextante.core.AlgorithmProvider import AlgorithmProvider
from sextante.core.SextanteLog import SextanteLog
from sextante.grass.GrassUtils import GrassUtils
from sextante.grass.GrassAlgorithm import GrassAlgorithm
from sextante.core.SextanteUtils import SextanteUtils
class GrassAlgorithmProvider(AlgorithmProvider):
def __init__(self):
AlgorithmProvider.__init__(self)
self.createAlgsList() #preloading algorithms to speed up
def initializeSettings(self):
AlgorithmProvider.initializeSettings(self)
if SextanteUtils.isWindows() or SextanteUtils.isMac():
SextanteConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_FOLDER, "GRASS folder", GrassUtils.grassPath()))
SextanteConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_WIN_SHELL, "Msys folder", GrassUtils.grassWinShell()))
SextanteConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_LOG_COMMANDS, "Log execution commands", False))
SextanteConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_LOG_CONSOLE, "Log console output", False))
def unload(self):
AlgorithmProvider.unload(self)
if SextanteUtils.isWindows() or SextanteUtils.isMac():
SextanteConfig.removeSetting(GrassUtils.GRASS_FOLDER)
SextanteConfig.removeSetting(GrassUtils.GRASS_WIN_SHELL)
SextanteConfig.removeSetting(GrassUtils.GRASS_LOG_COMMANDS)
SextanteConfig.removeSetting(GrassUtils.GRASS_LOG_CONSOLE)
def createAlgsList(self):
self.preloadedAlgs = []
folder = GrassUtils.grassDescriptionPath()
for descriptionFile in os.listdir(folder):
if descriptionFile.endswith("txt"):
try:
alg = GrassAlgorithm(os.path.join(folder, descriptionFile))
if alg.name.strip() != "":
self.preloadedAlgs.append(alg)
else:
SextanteLog.addToLog(SextanteLog.LOG_ERROR, "Could not open GRASS algorithm: " + descriptionFile)
except Exception,e:
SextanteLog.addToLog(SextanteLog.LOG_ERROR, "Could not open GRASS algorithm: " + descriptionFile)
self.preloadedAlgs.append(nviz())
def _loadAlgorithms(self):
self.algs = self.preloadedAlgs
def getDescription(self):
return "GRASS commands"
def getName(self):
return "grass"
def getIcon(self):
return QIcon(os.path.dirname(__file__) + "/../images/grass.png")
def getSupportedOutputVectorLayerExtensions(self):
return ["shp"]
def getSupportedOutputRasterLayerExtensions(self):
return ["tif"]