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143 lines
5.2 KiB
Python
143 lines
5.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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r_li.py
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-------
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Date : February 2016
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Copyright : (C) 2016 by Médéric Ribreux
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Email : medspx at medspx dot fr
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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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__author__ = 'Médéric Ribreux'
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__date__ = 'February 2016'
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__copyright__ = '(C) 2016, Médéric Ribreux'
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import shutil
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from qgis.core import QgsProcessingParameterString
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from processing.tools.system import (isWindows, mkdir,
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getTempFilename)
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import os
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# for MS-Windows users who have MBCS chars in their name:
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if os.name == 'nt':
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import win32api
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def rliPath():
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"""Return r.li GRASS7 user dir"""
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if isWindows():
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homeDir = win32api.GetShortPathName(os.path.expanduser('~'))
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return os.path.join(homeDir, 'AppData', 'Roaming', 'GRASS7', 'r.li')
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else:
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return os.path.join(os.path.expanduser("~"), '.grass7', 'r.li')
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def removeConfigFile(alg, parameters, context):
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""" Remove the r.li user dir config file """
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configPath = alg.parameterAsString(parameters, 'config', context)
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if isWindows():
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command = "DEL {}".format(os.path.join(rliPath(), configPath))
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else:
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command = "rm {}".format(os.path.join(rliPath(), configPath))
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alg.commands.append(command)
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def checkMovingWindow(alg, parameters, context, outputTxt=False):
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""" Verify if we have the right parameters """
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configTxt = alg.parameterAsString(parameters, 'config_txt', context)
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config = alg.parameterAsString(parameters, 'config', context)
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if configTxt and config:
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return False, alg.tr("You need to set either inline configuration or a configuration file!")
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# Verify that configuration is in moving window
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movingWindow = False
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if configTxt:
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if 'MOVINGWINDOW' in configTxt:
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movingWindow = True
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# Read config file:
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if config:
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with open(config) as f:
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for line in f:
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if 'MOVINGWINDOW' in line:
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movingWindow = True
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if not movingWindow and not outputTxt:
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return False, alg.tr('Your configuration needs to be a "moving window" configuration!')
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if movingWindow and outputTxt:
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return False, alg.tr('Your configuration needs to be a non "moving window" configuration!')
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return True, None
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def configFile(alg, parameters, context, feedback, outputTxt=False):
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"""Handle inline configuration
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:param parameters:
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"""
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# Where is the GRASS7 user directory ?
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userGrass7Path = rliPath()
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if not os.path.isdir(userGrass7Path):
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mkdir(userGrass7Path)
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if not os.path.isdir(os.path.join(userGrass7Path, 'output')):
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mkdir(os.path.join(userGrass7Path, 'output'))
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# If we have a configuration file, we need to copy it into user dir
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if parameters['config']:
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fileName = alg.parameterAsString(parameters, 'config', context)
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configFilePath = os.path.join(userGrass7Path, os.path.basename(fileName))
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# Copy the file
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shutil.copy(parameters['config'], configFilePath)
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# Change the parameter value
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parameters['config'] = os.path.basename(configFilePath)
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# Handle inline configuration
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elif parameters['config_txt']:
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# Creates a temporary txt file in user r.li directory
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tempConfig = os.path.basename(getTempFilename())
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configFilePath = os.path.join(userGrass7Path, tempConfig)
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# Inject rules into temporary txt file
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with open(configFilePath, "w") as f:
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f.write(alg.parameterAsString(parameters, 'config_txt', context))
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f.write("\n")
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# Use temporary file as rules file
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parameters['config'] = os.path.basename(configFilePath)
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alg.removeParameter('config_txt')
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# For ascii output, we need a virtual output
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if outputTxt:
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param = QgsProcessingParameterString(
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'output', 'virtual output',
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'a' + os.path.basename(getTempFilename()),
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False, False)
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alg.addParameter(param)
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alg.processCommand(parameters, context, feedback, outputTxt)
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# Remove Config file:
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removeConfigFile(alg, parameters, context)
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def moveOutputTxtFile(alg, parameters, context):
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# Find output file name:
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txtPath = alg.parameterAsString(parameters, 'output_txt', context)
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userGrass7Path = rliPath()
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output = os.path.join(userGrass7Path, 'output',
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alg.parameterAsString(parameters, 'output', context))
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# move the file
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if isWindows():
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command = "MOVE /Y {} {}".format(output, txtPath)
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else:
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command = "mv -f {} {}".format(output, txtPath)
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alg.commands.append(command)
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