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# -*- coding: utf-8 -*-
"""
***************************************************************************
GdalUtils.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 subprocess
import platform
from PyQt4.QtCore import *
from qgis.core import QgsApplication
from processing.core.ProcessingLog import ProcessingLog
try:
from osgeo import gdal
gdalAvailable = True
except:
gdalAvailable = False
class GdalUtils:
supportedRasters = None
@staticmethod
def runGdal(commands, progress):
envval = unicode(os.getenv('PATH'))
# We need to give some extra hints to get things picked up on OS X
if platform.system() == 'Darwin':
if os.path.isfile(os.path.join(QgsApplication.prefixPath(), "bin", "gdalinfo")):
# Looks like there's a bundled gdal. Let's use it.
os.environ['PATH'] = "%s%s%s" % (os.path.join(QgsApplication.prefixPath(), "bin"), os.pathsep, envval)
os.environ['DYLD_LIBRARY_PATH'] = os.path.join(QgsApplication.prefixPath(), "lib")
else:
# Nothing internal. Let's see if we can find it elsewhere.
settings = QSettings()
path = unicode(settings.value('/GdalTools/gdalPath', ''))
envval += '%s%s' % (os.pathsep, path)
os.putenv('PATH', envval)
else:
# Other platforms should use default gdal finder codepath
settings = QSettings()
path = unicode(settings.value('/GdalTools/gdalPath', ''))
if not path.lower() in envval.lower().split(os.pathsep):
envval += '%s%s' % (os.pathsep, path)
os.putenv('PATH', envval)
loglines = []
loglines.append('GDAL execution console output')
fused_command = ''.join(['%s ' % c for c in commands])
proc = subprocess.Popen(
fused_command,
shell=True,
stdout=subprocess.PIPE,
stdin=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=False,
).stdout
for line in iter(proc.readline, ''):
loglines.append(line)
ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
GdalUtils.consoleOutput = loglines
@staticmethod
def getConsoleOutput():
return GdalUtils.consoleOutput
@staticmethod
def getSupportedRasters():
if not gdalAvailable:
return {}
if GdalUtils.supportedRasters is not None:
return GdalUtils.supportedRasters
if gdal.GetDriverCount() == 0:
gdal.AllRegister()
GdalUtils.supportedRasters = {}
GdalUtils.supportedRasters['GTiff'] = ['tif']
for i in range(gdal.GetDriverCount()):
driver = gdal.GetDriver(i)
if driver is None:
continue
shortName = driver.ShortName
metadata = driver.GetMetadata()
if gdal.DCAP_CREATE not in metadata \
or metadata[gdal.DCAP_CREATE] != 'YES':
continue
if gdal.DMD_EXTENSION in metadata:
extensions = metadata[gdal.DMD_EXTENSION].split('/')
if extensions:
GdalUtils.supportedRasters[shortName] = extensions
return GdalUtils.supportedRasters
@staticmethod
def getSupportedRasterExtensions():
allexts = ['tif']
for exts in GdalUtils.getSupportedRasters().values():
for ext in exts:
if ext not in allexts and ext != '':
allexts.append(ext)
return allexts
@staticmethod
def getFormatShortNameFromFilename(filename):
ext = filename[filename.rfind('.') + 1:]
supported = GdalUtils.getSupportedRasters()
for name in supported.keys():
exts = supported[name]
if ext in exts:
return name
return 'GTiff'
@staticmethod
def escapeAndJoin(strList):
joined = ''
for s in strList:
if ' ' in s:
escaped = '"' + s.replace('\\', '\\\\').replace('"', '\\"') \
+ '"'
else:
escaped = s
joined += escaped + ' '
return joined.strip()
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