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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 QSettings
from qgis.core import QgsApplication, QgsVectorFileWriter
from processing.core.ProcessingConfig import ProcessingConfig
from processing.core.ProcessingLog import ProcessingLog
from processing.tools.system import isWindows, isMac
try:
from osgeo import gdal
gdalAvailable = True
except:
gdalAvailable = False
class GdalUtils:
GDAL_HELP_PATH = 'GDAL_HELP_PATH'
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])
progress.setInfo('GDAL command:')
progress.setCommand(fused_command)
proc = subprocess.Popen(
fused_command,
shell=True,
stdout=subprocess.PIPE,
stdin=open(os.devnull),
stderr=subprocess.STDOUT,
universal_newlines=True,
).stdout
progress.setInfo('GDAL command output:')
for line in iter(proc.readline, ''):
progress.setConsoleInfo(line)
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 getVectorDriverFromFileName(filename):
ext = os.path.splitext(filename)[1]
if ext == '':
return 'ESRI Shapefile'
formats = QgsVectorFileWriter.supportedFiltersAndFormats()
for k, v in formats.iteritems():
if ext in k:
return v
return 'ESRI Shapefile'
@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 s[0] != '-' and ' ' in s:
escaped = '"' + s.replace('\\', '\\\\').replace('"', '\\"') \
+ '"'
else:
escaped = s
joined += escaped + ' '
return joined.strip()
@staticmethod
def gdalHelpPath():
helpPath = ProcessingConfig.getSetting(GdalUtils.GDAL_HELP_PATH)
if helpPath is None:
if isWindows():
pass
elif isMac():
pass
else:
searchPaths = ['/usr/share/doc/libgdal-doc/gdal']
for path in searchPaths:
if os.path.exists(path):
helpPath = os.path.abspath(path)
break
return helpPath if helpPath is not None else 'http://www.gdal.org/'
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