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# -*- coding: utf-8 -*-
"""
***************************************************************************
SagaUtils.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 stat
import traceback
import subprocess
from PyQt4.QtCore import *
from qgis.core import *
from processing.core.ProcessingConfig import ProcessingConfig
from processing.core.ProcessingLog import ProcessingLog
from processing.tools.system import *
from processing.tests.TestData import polygons
class SagaUtils:
SAGA_208 = 'SAGA_208'
SAGA_LOG_COMMANDS = 'SAGA_LOG_COMMANDS'
SAGA_LOG_CONSOLE = 'SAGA_LOG_CONSOLE'
SAGA_FOLDER = 'SAGA_FOLDER'
SAGA_IMPORT_EXPORT_OPTIMIZATION = 'SAGA_IMPORT_EXPORT_OPTIMIZATION'
isSagaInstalled = False
@staticmethod
def sagaBatchJobFilename():
if isWindows():
filename = 'saga_batch_job.bat'
else:
filename = 'saga_batch_job.sh'
batchfile = userFolder() + os.sep + filename
return batchfile
@staticmethod
def findSagaFolder():
folder = None
if isMac():
testfolder = os.path.join(QgsApplication.prefixPath(), 'bin')
if os.path.exists(os.path.join(testfolder, 'saga_cmd')):
folder = testfolder
else:
testfolder = '/usr/local/bin'
if os.path.exists(os.path.join(testfolder, 'saga_cmd')):
folder = testfolder
elif isWindows():
testfolder = os.path.join(os.path.dirname(QgsApplication.prefixPath()), 'saga')
if os.path.exists(os.path.join(testfolder, 'saga_cmd.exe')):
folder = testfolder
return folder
@staticmethod
def sagaPath():
folder = SagaUtils.findSagaFolder()
if folder is None:
folder = ProcessingConfig.getSetting(SagaUtils.SAGA_FOLDER)
return folder or ''
@staticmethod
def isSaga208():
if SagaUtils.findSagaFolder() is not None:
return not isMac();
else:
return ProcessingConfig.getSetting(SagaUtils.SAGA_208)
@staticmethod
def sagaDescriptionPath():
return os.path.join(os.path.dirname(__file__), 'description')
@staticmethod
def createSagaBatchJobFileFromSagaCommands(commands):
fout = open(SagaUtils.sagaBatchJobFilename(), 'w')
if isWindows():
fout.write('set SAGA=' + SagaUtils.sagaPath() + '\n')
fout.write('set SAGA_MLB=' + SagaUtils.sagaPath() + os.sep
+ 'modules' + '\n')
fout.write('PATH=PATH;%SAGA%;%SAGA_MLB%\n')
elif isMac():
fout.write('export SAGA_MLB=' + SagaUtils.sagaPath()
+ '/../lib/saga\n')
fout.write('export PATH=' + SagaUtils.sagaPath() + ':$PATH\n')
else:
pass
for command in commands:
fout.write('saga_cmd ' + command.encode('utf8') + '\n')
fout.write('exit')
fout.close()
@staticmethod
def executeSaga(progress):
if isWindows():
command = ['cmd.exe', '/C ', SagaUtils.sagaBatchJobFilename()]
else:
os.chmod(SagaUtils.sagaBatchJobFilename(), stat.S_IEXEC
| stat.S_IREAD | stat.S_IWRITE)
command = [SagaUtils.sagaBatchJobFilename()]
loglines = []
loglines.append('SAGA execution console output')
proc = subprocess.Popen(
command,
shell=True,
stdout=subprocess.PIPE,
stdin=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True,
).stdout
for line in iter(proc.readline, ''):
if '%' in line:
s = ''.join([x for x in line if x.isdigit()])
try:
progress.setPercentage(int(s))
except:
pass
else:
line = line.strip()
if line != '/' and line != '-' and line != '\\' and line \
!= '|':
loglines.append(line)
progress.setConsoleInfo(line)
if ProcessingConfig.getSetting(SagaUtils.SAGA_LOG_CONSOLE):
ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
@staticmethod
def checkSagaIsInstalled(ignorePreviousState=False):
if isWindows():
path = SagaUtils.sagaPath()
if path == '':
return 'SAGA folder is not configured.\nPlease configure it \
before running SAGA algorithms.'
cmdpath = os.path.join(path, 'saga_cmd.exe')
if not os.path.exists(cmdpath):
return 'The specified SAGA folder does not contain a valid \
SAGA executable.\n' \
+ 'Please, go to the processing settings dialog, and \
check that the SAGA\n' \
+ 'folder is correctly configured'
if not ignorePreviousState:
if SagaUtils.isSagaInstalled:
return
try:
from processing import runalg
result = runalg('saga:polygoncentroids', polygons(), 0, None)
if result is None or not os.path.exists(result['CENTROIDS']):
return 'It seems that SAGA is not correctly installed in \
your system.\nPlease install it before running SAGA \
algorithms.'
except:
s = traceback.format_exc()
return 'Error while checking SAGA installation. SAGA might not \
be correctly configured.\n' + s
SagaUtils.isSagaInstalled = True
|
