QGIS/python/plugins/processing/grass/GrassAlgorithmProvider.py

93 lines
3.9 KiB
Python

# -*- 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 processing.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 processing.core.ProcessingConfig import ProcessingConfig, Setting
from processing.core.AlgorithmProvider import AlgorithmProvider
from processing.core.ProcessingLog import ProcessingLog
from processing.grass.GrassUtils import GrassUtils
from processing.grass.GrassAlgorithm import GrassAlgorithm
from processing.tools.system import *
class GrassAlgorithmProvider(AlgorithmProvider):
def __init__(self):
AlgorithmProvider.__init__(self)
self.createAlgsList() #preloading algorithms to speed up
def initializeSettings(self):
AlgorithmProvider.initializeSettings(self)
if isWindows() or isMac():
ProcessingConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_FOLDER, "GRASS folder", GrassUtils.grassPath()))
ProcessingConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_WIN_SHELL, "Msys folder", GrassUtils.grassWinShell()))
ProcessingConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_LOG_COMMANDS, "Log execution commands", False))
ProcessingConfig.addSetting(Setting(self.getDescription(), GrassUtils.GRASS_LOG_CONSOLE, "Log console output", False))
def unload(self):
AlgorithmProvider.unload(self)
if isWindows() or isMac():
ProcessingConfig.removeSetting(GrassUtils.GRASS_FOLDER)
ProcessingConfig.removeSetting(GrassUtils.GRASS_WIN_SHELL)
ProcessingConfig.removeSetting(GrassUtils.GRASS_LOG_COMMANDS)
ProcessingConfig.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:
ProcessingLog.addToLog(ProcessingLog.LOG_ERROR, "Could not open GRASS algorithm: " + descriptionFile)
except Exception,e:
ProcessingLog.addToLog(ProcessingLog.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"]