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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 osgeo import gdal
from qgis.PyQt.QtCore import QSettings
from qgis.core import QgsApplication, QgsVectorFileWriter
from processing.core.ProcessingLog import ProcessingLog
from processing.core.ProcessingConfig import ProcessingConfig
from processing.core.SilentProgress import SilentProgress
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=None):
if progress is None:
progress = SilentProgress()
envval = os.getenv('PATH')
# We need to give some extra hints to get things picked up on OS X
isDarwin = False
try:
isDarwin = platform.system() == 'Darwin'
except IOError: # https://travis-ci.org/m-kuhn/QGIS#L1493-L1526
pass
if isDarwin and os.path.isfile(os.path.join(QgsApplication.prefixPath(), "bin", "gdalinfo")):
# Looks like there's a bundled gdal. Let's use it.
os.environ['PATH'] = "{}{}{}".format(os.path.join(QgsApplication.prefixPath(), "bin"), os.pathsep, envval)
os.environ['DYLD_LIBRARY_PATH'] = os.path.join(QgsApplication.prefixPath(), "lib")
else:
# Other platforms should use default gdal finder codepath
settings = QSettings()
path = settings.value('/GdalTools/gdalPath', '')
if not path.lower() in envval.lower().split(os.pathsep):
envval += '{}{}'.format(os.pathsep, path)
os.putenv('PATH', envval)
fused_command = ' '.join([unicode(c) for c in commands])
progress.setInfo('GDAL command:')
progress.setCommand(fused_command)
progress.setInfo('GDAL command output:')
success = False
retry_count = 0
while success == False:
loglines = []
loglines.append('GDAL execution console output')
try:
proc = subprocess.Popen(
fused_command,
shell=True,
stdout=subprocess.PIPE,
stdin=open(os.devnull),
stderr=subprocess.STDOUT,
universal_newlines=True,
).stdout
for line in proc:
progress.setConsoleInfo(line)
loglines.append(line)
success = True
except IOError as e:
if retry_count < 5:
retry_count += 1
else:
raise IOError(e.message + u'\nTried 5 times without success. Last iteration stopped after reading {} line(s).\nLast line(s):\n{}'.format(len(loglines), u'\n'.join(loglines[-10:])))
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
if GdalUtils.version() >= 2000000 and 'DCAP_RASTER' not in driver.GetMetadata_Dict():
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 version():
return int(gdal.VersionInfo('VERSION_NUM'))
@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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