mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-09 00:35:20 -05:00
c8d3f74f4a
This is a continuation of: - #8db3dead87e385f2798356d - #5c97d22b16320874dbe1 This commit only affects users that have multiple GRASS installations on their Macs. Using the most recent GRASS version is what we do on Linux too.
587 lines
23 KiB
Python
587 lines
23 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
GrassUtils.py
|
|
---------------------
|
|
Date : February 2015
|
|
Copyright : (C) 2014-2015 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__ = 'February 2015'
|
|
__copyright__ = '(C) 2014-2015, Victor Olaya'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import stat
|
|
import shutil
|
|
import shlex
|
|
import subprocess
|
|
import os
|
|
|
|
from qgis.core import (Qgis,
|
|
QgsApplication,
|
|
QgsProcessingUtils,
|
|
QgsMessageLog)
|
|
from qgis.PyQt.QtCore import QCoreApplication
|
|
from processing.core.ProcessingConfig import ProcessingConfig
|
|
from processing.tools.system import userFolder, isWindows, isMac, mkdir
|
|
from processing.tests.TestData import points
|
|
from processing.algs.gdal.GdalUtils import GdalUtils
|
|
|
|
|
|
class Grass7Utils:
|
|
|
|
GRASS_REGION_XMIN = 'GRASS7_REGION_XMIN'
|
|
GRASS_REGION_YMIN = 'GRASS7_REGION_YMIN'
|
|
GRASS_REGION_XMAX = 'GRASS7_REGION_XMAX'
|
|
GRASS_REGION_YMAX = 'GRASS7_REGION_YMAX'
|
|
GRASS_REGION_CELLSIZE = 'GRASS7_REGION_CELLSIZE'
|
|
GRASS_FOLDER = 'GRASS7_FOLDER'
|
|
GRASS_LOG_COMMANDS = 'GRASS7_LOG_COMMANDS'
|
|
GRASS_LOG_CONSOLE = 'GRASS7_LOG_CONSOLE'
|
|
GRASS_HELP_PATH = 'GRASS_HELP_PATH'
|
|
GRASS_USE_VEXTERNAL = 'GRASS_USE_VEXTERNAL'
|
|
|
|
# TODO Review all default options formats
|
|
GRASS_RASTER_FORMATS_CREATEOPTS = {
|
|
'GTiff': 'TFW=YES,COMPRESS=LZW',
|
|
'PNG': 'ZLEVEL=9',
|
|
'WEBP': 'QUALITY=85'
|
|
}
|
|
|
|
sessionRunning = False
|
|
sessionLayers = {}
|
|
projectionSet = False
|
|
|
|
isGrassInstalled = False
|
|
|
|
version = None
|
|
path = None
|
|
command = None
|
|
|
|
@staticmethod
|
|
def grassBatchJobFilename():
|
|
"""
|
|
The Batch file is executed by GRASS binary.
|
|
On GNU/Linux and MacOSX it will be executed by a shell.
|
|
On MS-Windows, it will be executed by cmd.exe.
|
|
"""
|
|
gisdbase = Grass7Utils.grassDataFolder()
|
|
if isWindows():
|
|
batchFile = os.path.join(gisdbase, 'grass_batch_job.cmd')
|
|
else:
|
|
batchFile = os.path.join(gisdbase, 'grass_batch_job.sh')
|
|
return batchFile
|
|
|
|
@staticmethod
|
|
def installedVersion(run=False):
|
|
"""
|
|
Returns the installed version of GRASS by
|
|
launching the GRASS command with -v parameter.
|
|
"""
|
|
if Grass7Utils.isGrassInstalled and not run:
|
|
return Grass7Utils.version
|
|
|
|
if Grass7Utils.grassBin() is None:
|
|
return None
|
|
|
|
# Launch GRASS command with -v parameter
|
|
# For MS-Windows, hide the console
|
|
if isWindows():
|
|
si = subprocess.STARTUPINFO()
|
|
si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
|
|
si.wShowWindow = subprocess.SW_HIDE
|
|
with subprocess.Popen(
|
|
[Grass7Utils.command, '-v'],
|
|
shell=False,
|
|
stdout=subprocess.PIPE,
|
|
stdin=subprocess.DEVNULL,
|
|
stderr=subprocess.STDOUT,
|
|
universal_newlines=True,
|
|
startupinfo=si if isWindows() else None
|
|
) as proc:
|
|
try:
|
|
lines = proc.stdout.readlines()
|
|
for line in lines:
|
|
if "GRASS GIS " in line:
|
|
line = line.split(" ")[-1].strip()
|
|
if line.startswith("7."):
|
|
Grass7Utils.version = line
|
|
return Grass7Utils.version
|
|
except:
|
|
pass
|
|
|
|
return None
|
|
|
|
@staticmethod
|
|
def grassBin():
|
|
"""
|
|
Find GRASS binary path on the operating system.
|
|
Sets global variable Grass7Utils.command
|
|
"""
|
|
def searchFolder(folder):
|
|
"""
|
|
Inline function to search for grass binaries into a folder
|
|
with os.walk
|
|
"""
|
|
if os.path.exists(folder):
|
|
for root, dirs, files in os.walk(folder):
|
|
for cmd in cmdList:
|
|
if cmd in files:
|
|
return os.path.join(root, cmd)
|
|
return None
|
|
|
|
if Grass7Utils.command:
|
|
return Grass7Utils.command
|
|
|
|
path = Grass7Utils.grassPath()
|
|
command = None
|
|
|
|
vn = os.path.join(path, "etc", "VERSIONNUMBER")
|
|
if os.path.isfile(vn):
|
|
with open(vn, "r") as f:
|
|
major, minor, patch = f.readlines()[0].split(' ')[0].split('.')
|
|
if patch != 'svn':
|
|
patch = ''
|
|
cmdList = [
|
|
"grass{}{}{}".format(major, minor, patch),
|
|
"grass",
|
|
"grass{}{}{}.sh".format(major, minor, patch),
|
|
"grass.sh"
|
|
]
|
|
else:
|
|
cmdList = [
|
|
"grass76", "grass74", "grass72", "grass70", "grass",
|
|
"grass76.sh", "grass74.sh", "grass72.sh", "grass70.sh", "grass.sh"
|
|
]
|
|
|
|
# For MS-Windows there is a difference between GRASS Path and GRASS binary
|
|
if isWindows():
|
|
# If nothing found, use OSGEO4W or QgsPrefix:
|
|
if "OSGEO4W_ROOT" in os.environ:
|
|
testFolder = str(os.environ['OSGEO4W_ROOT'])
|
|
else:
|
|
testFolder = str(QgsApplication.prefixPath())
|
|
testFolder = os.path.join(testFolder, 'bin')
|
|
command = searchFolder(testFolder)
|
|
elif isMac():
|
|
# Search in grassPath
|
|
command = searchFolder(path)
|
|
|
|
# If everything has failed, use shutil
|
|
if not command:
|
|
for cmd in cmdList:
|
|
testBin = shutil.which(cmd)
|
|
if testBin:
|
|
command = os.path.abspath(testBin)
|
|
break
|
|
|
|
if command:
|
|
Grass7Utils.command = command
|
|
if path is '':
|
|
Grass7Utils.path = os.path.dirname(command)
|
|
|
|
return command
|
|
|
|
@staticmethod
|
|
def grassPath():
|
|
"""
|
|
Find GRASS path on the operating system.
|
|
Sets global variable Grass7Utils.path
|
|
"""
|
|
if Grass7Utils.path is not None:
|
|
return Grass7Utils.path
|
|
|
|
if not isWindows() and not isMac():
|
|
return ''
|
|
|
|
if isMac():
|
|
folder = ProcessingConfig.getSetting(Grass7Utils.GRASS_FOLDER) or ''
|
|
if not os.path.exists(folder):
|
|
folder = None
|
|
else:
|
|
folder = None
|
|
|
|
if folder is None:
|
|
# Under MS-Windows, we use OSGEO4W or QGIS Path for folder
|
|
if isWindows():
|
|
if "GISBASE" in os.environ:
|
|
folder = os.environ["GISBASE"]
|
|
else:
|
|
testfolder = os.path.join(str(QgsApplication.prefixPath()), 'grass')
|
|
if os.path.isdir(testfolder):
|
|
grassfolders = sorted([f for f in os.listdir(testfolder) if f.startswith("grass-7.") and os.path.isdir(os.path.join(testfolder, f))], reverse=True, key=lambda x: [int(v) for v in x[len("grass-"):].split('.') if v != 'svn'])
|
|
if grassfolders:
|
|
folder = os.path.join(testfolder, grassfolders[0])
|
|
elif isMac():
|
|
# For MacOSX, we scan some well-known directories
|
|
# Start with QGIS bundle
|
|
for version in ['', '7', '76', '74', '72', '71', '70']:
|
|
testfolder = os.path.join(str(QgsApplication.prefixPath()),
|
|
'grass{}'.format(version))
|
|
if os.path.isdir(testfolder):
|
|
folder = testfolder
|
|
break
|
|
# If nothing found, try standalone GRASS installation
|
|
if folder is None:
|
|
for version in ['6', '4', '2', '1', '0']:
|
|
testfolder = '/Applications/GRASS-7.{}.app/Contents/MacOS'.format(version)
|
|
if os.path.isdir(testfolder):
|
|
folder = testfolder
|
|
break
|
|
|
|
if folder is not None:
|
|
Grass7Utils.path = folder
|
|
|
|
return folder or ''
|
|
|
|
@staticmethod
|
|
def grassDescriptionPath():
|
|
return os.path.join(os.path.dirname(__file__), 'description')
|
|
|
|
@staticmethod
|
|
def getWindowsCodePage():
|
|
"""
|
|
Determines MS-Windows CMD.exe shell codepage.
|
|
Used into GRASS exec script under MS-Windows.
|
|
"""
|
|
from ctypes import cdll
|
|
return str(cdll.kernel32.GetACP())
|
|
|
|
@staticmethod
|
|
def createGrassBatchJobFileFromGrassCommands(commands):
|
|
with open(Grass7Utils.grassBatchJobFilename(), 'w') as fout:
|
|
if not isWindows():
|
|
fout.write('#!/bin/sh\n')
|
|
else:
|
|
fout.write('chcp {}>NUL\n'.format(Grass7Utils.getWindowsCodePage()))
|
|
for command in commands:
|
|
Grass7Utils.writeCommand(fout, command)
|
|
fout.write('exit')
|
|
|
|
@staticmethod
|
|
def grassMapsetFolder():
|
|
"""
|
|
Creates and returns the GRASS temporary DB LOCATION directory.
|
|
"""
|
|
folder = os.path.join(Grass7Utils.grassDataFolder(), 'temp_location')
|
|
mkdir(folder)
|
|
return folder
|
|
|
|
@staticmethod
|
|
def grassDataFolder():
|
|
"""
|
|
Creates and returns the GRASS temporary DB directory.
|
|
"""
|
|
tempfolder = os.path.normpath(
|
|
os.path.join(QgsProcessingUtils.tempFolder(), 'grassdata'))
|
|
mkdir(tempfolder)
|
|
return tempfolder
|
|
|
|
@staticmethod
|
|
def createTempMapset():
|
|
"""
|
|
Creates a temporary location and mapset(s) for GRASS data
|
|
processing. A minimal set of folders and files is created in the
|
|
system's default temporary directory. The settings files are
|
|
written with sane defaults, so GRASS can do its work. The mapset
|
|
projection will be set later, based on the projection of the first
|
|
input image or vector
|
|
"""
|
|
folder = Grass7Utils.grassMapsetFolder()
|
|
mkdir(os.path.join(folder, 'PERMANENT'))
|
|
mkdir(os.path.join(folder, 'PERMANENT', '.tmp'))
|
|
Grass7Utils.writeGrassWindow(os.path.join(folder, 'PERMANENT', 'DEFAULT_WIND'))
|
|
with open(os.path.join(folder, 'PERMANENT', 'MYNAME'), 'w') as outfile:
|
|
outfile.write(
|
|
'QGIS GRASS GIS 7 interface: temporary data processing location.\n')
|
|
|
|
Grass7Utils.writeGrassWindow(os.path.join(folder, 'PERMANENT', 'WIND'))
|
|
mkdir(os.path.join(folder, 'PERMANENT', 'sqlite'))
|
|
with open(os.path.join(folder, 'PERMANENT', 'VAR'), 'w') as outfile:
|
|
outfile.write('DB_DRIVER: sqlite\n')
|
|
outfile.write('DB_DATABASE: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db\n')
|
|
|
|
@staticmethod
|
|
def writeGrassWindow(filename):
|
|
"""
|
|
Creates the GRASS Window file
|
|
"""
|
|
with open(filename, 'w') as out:
|
|
out.write('proj: 0\n')
|
|
out.write('zone: 0\n')
|
|
out.write('north: 1\n')
|
|
out.write('south: 0\n')
|
|
out.write('east: 1\n')
|
|
out.write('west: 0\n')
|
|
out.write('cols: 1\n')
|
|
out.write('rows: 1\n')
|
|
out.write('e-w resol: 1\n')
|
|
out.write('n-s resol: 1\n')
|
|
out.write('top: 1\n')
|
|
out.write('bottom: 0\n')
|
|
out.write('cols3: 1\n')
|
|
out.write('rows3: 1\n')
|
|
out.write('depths: 1\n')
|
|
out.write('e-w resol3: 1\n')
|
|
out.write('n-s resol3: 1\n')
|
|
out.write('t-b resol: 1\n')
|
|
|
|
@staticmethod
|
|
def prepareGrassExecution(commands):
|
|
"""
|
|
Prepare GRASS batch job in a script and
|
|
returns it as a command ready for subprocess.
|
|
"""
|
|
if Grass7Utils.command is None:
|
|
Grass7Utils.grassBin()
|
|
|
|
env = os.environ.copy()
|
|
env['GRASS_MESSAGE_FORMAT'] = 'plain'
|
|
if 'GISBASE' in env:
|
|
del env['GISBASE']
|
|
Grass7Utils.createGrassBatchJobFileFromGrassCommands(commands)
|
|
os.chmod(Grass7Utils.grassBatchJobFilename(), stat.S_IEXEC | stat.S_IREAD | stat.S_IWRITE)
|
|
command = [Grass7Utils.command,
|
|
os.path.join(Grass7Utils.grassMapsetFolder(), 'PERMANENT'),
|
|
'--exec', Grass7Utils.grassBatchJobFilename()]
|
|
|
|
return command, env
|
|
|
|
@staticmethod
|
|
def executeGrass(commands, feedback, outputCommands=None):
|
|
loglines = []
|
|
loglines.append(Grass7Utils.tr('GRASS GIS 7 execution console output'))
|
|
grassOutDone = False
|
|
command, grassenv = Grass7Utils.prepareGrassExecution(commands)
|
|
# QgsMessageLog.logMessage('exec: {}'.format(command), 'DEBUG', Qgis.Info)
|
|
|
|
# For MS-Windows, we need to hide the console window.
|
|
if isWindows():
|
|
si = subprocess.STARTUPINFO()
|
|
si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
|
|
si.wShowWindow = subprocess.SW_HIDE
|
|
|
|
with subprocess.Popen(
|
|
command,
|
|
shell=False,
|
|
stdout=subprocess.PIPE,
|
|
stdin=subprocess.DEVNULL,
|
|
stderr=subprocess.STDOUT,
|
|
universal_newlines=True,
|
|
env=grassenv,
|
|
encoding="cp{}".format(Grass7Utils.getWindowsCodePage()) if isWindows() else None,
|
|
startupinfo=si if isWindows() else None
|
|
) as proc:
|
|
for line in iter(proc.stdout.readline, ''):
|
|
if 'GRASS_INFO_PERCENT' in line:
|
|
try:
|
|
feedback.setProgress(int(line[len('GRASS_INFO_PERCENT') + 2:]))
|
|
except:
|
|
pass
|
|
else:
|
|
if 'r.out' in line or 'v.out' in line:
|
|
grassOutDone = True
|
|
loglines.append(line)
|
|
if any([l in line for l in ['WARNING', 'ERROR']]):
|
|
feedback.reportError(line.strip())
|
|
elif 'Segmentation fault' in line:
|
|
feedback.reportError(line.strip())
|
|
feedback.reportError('\n' + Grass7Utils.tr('GRASS command crashed :( Try a different set of input parameters and consult the GRASS algorithm manual for more information.') + '\n')
|
|
if ProcessingConfig.getSetting(Grass7Utils.GRASS_USE_VEXTERNAL):
|
|
feedback.reportError(Grass7Utils.tr(
|
|
'Suggest disabling the experimental "use v.external" option from the Processing GRASS Provider options.') + '\n')
|
|
elif line.strip():
|
|
feedback.pushConsoleInfo(line.strip())
|
|
|
|
# Some GRASS scripts, like r.mapcalculator or r.fillnulls, call
|
|
# other GRASS scripts during execution. This may override any
|
|
# commands that are still to be executed by the subprocess, which
|
|
# are usually the output ones. If that is the case runs the output
|
|
# commands again.
|
|
if not grassOutDone and outputCommands:
|
|
command, grassenv = Grass7Utils.prepareGrassExecution(outputCommands)
|
|
# For MS-Windows, we need to hide the console window.
|
|
if isWindows():
|
|
si = subprocess.STARTUPINFO()
|
|
si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
|
|
si.wShowWindow = subprocess.SW_HIDE
|
|
with subprocess.Popen(
|
|
command,
|
|
shell=False,
|
|
stdout=subprocess.PIPE,
|
|
stdin=subprocess.DEVNULL,
|
|
stderr=subprocess.STDOUT,
|
|
universal_newlines=True,
|
|
env=grassenv,
|
|
encoding="cp{}".format(Grass7Utils.getWindowsCodePage()) if isWindows() else None,
|
|
startupinfo=si if isWindows() else None
|
|
) as proc:
|
|
for line in iter(proc.stdout.readline, ''):
|
|
if 'GRASS_INFO_PERCENT' in line:
|
|
try:
|
|
feedback.setProgress(int(
|
|
line[len('GRASS_INFO_PERCENT') + 2:]))
|
|
except:
|
|
pass
|
|
if any([l in line for l in ['WARNING', 'ERROR']]):
|
|
loglines.append(line.strip())
|
|
feedback.reportError(line.strip())
|
|
elif line.strip():
|
|
loglines.append(line.strip())
|
|
feedback.pushConsoleInfo(line.strip())
|
|
|
|
if ProcessingConfig.getSetting(Grass7Utils.GRASS_LOG_CONSOLE):
|
|
QgsMessageLog.logMessage('\n'.join(loglines), 'Processing', Qgis.Info)
|
|
|
|
# GRASS session is used to hold the layers already exported or
|
|
# produced in GRASS between multiple calls to GRASS algorithms.
|
|
# This way they don't have to be loaded multiple times and
|
|
# following algorithms can use the results of the previous ones.
|
|
# Starting a session just involves creating the temp mapset
|
|
# structure
|
|
@staticmethod
|
|
def startGrassSession():
|
|
if not Grass7Utils.sessionRunning:
|
|
Grass7Utils.createTempMapset()
|
|
Grass7Utils.sessionRunning = True
|
|
|
|
# End session by removing the temporary GRASS mapset and all
|
|
# the layers.
|
|
@staticmethod
|
|
def endGrassSession():
|
|
#shutil.rmtree(Grass7Utils.grassMapsetFolder(), True)
|
|
Grass7Utils.sessionRunning = False
|
|
Grass7Utils.sessionLayers = {}
|
|
Grass7Utils.projectionSet = False
|
|
|
|
@staticmethod
|
|
def getSessionLayers():
|
|
return Grass7Utils.sessionLayers
|
|
|
|
@staticmethod
|
|
def addSessionLayers(exportedLayers):
|
|
Grass7Utils.sessionLayers = dict(
|
|
list(Grass7Utils.sessionLayers.items()) +
|
|
list(exportedLayers.items()))
|
|
|
|
@staticmethod
|
|
def checkGrassIsInstalled(ignorePreviousState=False):
|
|
if not ignorePreviousState:
|
|
if Grass7Utils.isGrassInstalled:
|
|
return
|
|
|
|
# We check the version of Grass7
|
|
if Grass7Utils.installedVersion() is not None:
|
|
# For Ms-Windows, we check GRASS binaries
|
|
if isWindows():
|
|
cmdpath = os.path.join(Grass7Utils.path, 'bin', 'r.out.gdal.exe')
|
|
if not os.path.exists(cmdpath):
|
|
return Grass7Utils.tr(
|
|
'The specified GRASS 7 folder "{}" does not contain '
|
|
'a valid set of GRASS 7 modules.\nPlease, go to the '
|
|
'Processing settings dialog, and check that the '
|
|
'GRASS 7\nfolder is correctly configured'.format(os.path.join(Grass7Utils.path, 'bin')))
|
|
Grass7Utils.isGrassInstalled = True
|
|
return
|
|
# Return error messages
|
|
else:
|
|
# MS-Windows or MacOSX
|
|
if isWindows() or isMac():
|
|
if Grass7Utils.path is None:
|
|
return Grass7Utils.tr(
|
|
'GRASS GIS 7 folder is not configured. Please configure '
|
|
'it before running GRASS GIS 7 algorithms.')
|
|
if Grass7Utils.command is None:
|
|
return Grass7Utils.tr(
|
|
'GRASS GIS 7 binary {0} can\'t be found on this system from a shell. '
|
|
'Please install it or configure your PATH {1} environment variable.'.format(
|
|
'(grass.bat)' if isWindows() else '(grass.sh)',
|
|
'or OSGEO4W_ROOT' if isWindows() else ''))
|
|
# GNU/Linux
|
|
else:
|
|
return Grass7Utils.tr(
|
|
'GRASS 7 can\'t be found on this system from a shell. '
|
|
'Please install it or configure your PATH environment variable.')
|
|
|
|
@staticmethod
|
|
def tr(string, context=''):
|
|
if context == '':
|
|
context = 'Grass7Utils'
|
|
return QCoreApplication.translate(context, string)
|
|
|
|
@staticmethod
|
|
def writeCommand(output, command):
|
|
try:
|
|
# Python 2
|
|
output.write(command.encode('utf8') + '\n')
|
|
except TypeError:
|
|
# Python 3
|
|
output.write(command + '\n')
|
|
|
|
@staticmethod
|
|
def grassHelpPath():
|
|
helpPath = ProcessingConfig.getSetting(Grass7Utils.GRASS_HELP_PATH)
|
|
|
|
if helpPath is None:
|
|
if isWindows() or isMac():
|
|
if Grass7Utils.path is not None:
|
|
localPath = os.path.join(Grass7Utils.path, 'docs/html')
|
|
if os.path.exists(localPath):
|
|
helpPath = os.path.abspath(localPath)
|
|
else:
|
|
searchPaths = ['/usr/share/doc/grass-doc/html',
|
|
'/opt/grass/docs/html',
|
|
'/usr/share/doc/grass/docs/html']
|
|
for path in searchPaths:
|
|
if os.path.exists(path):
|
|
helpPath = os.path.abspath(path)
|
|
break
|
|
|
|
if helpPath is not None:
|
|
return helpPath
|
|
elif Grass7Utils.version:
|
|
version = Grass7Utils.version.replace('.', '')[:2]
|
|
return 'https://grass.osgeo.org/grass{}/manuals/'.format(version)
|
|
else:
|
|
# GRASS not available!
|
|
return 'https://grass.osgeo.org/grass76/manuals/'
|
|
|
|
@staticmethod
|
|
def getSupportedOutputRasterExtensions():
|
|
# We use the same extensions than GDAL because:
|
|
# - GRASS is also using GDAL for raster imports.
|
|
# - Chances that GRASS is compiled with another version of
|
|
# GDAL than QGIS are very limited!
|
|
return GdalUtils.getSupportedOutputRasterExtensions()
|
|
|
|
@staticmethod
|
|
def getRasterFormatFromFilename(filename):
|
|
"""
|
|
Returns Raster format name from a raster filename.
|
|
:param filename: The name with extension of the raster.
|
|
:return: The Gdal short format name for extension.
|
|
"""
|
|
ext = os.path.splitext(filename)[1].lower()
|
|
ext = ext.lstrip('.')
|
|
if ext:
|
|
supported = GdalUtils.getSupportedRasters()
|
|
for name in list(supported.keys()):
|
|
exts = supported[name]
|
|
if ext in exts:
|
|
return name
|
|
return 'GTiff'
|