mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-23 00:02:38 -05:00
229 lines
8.6 KiB
Python
229 lines
8.6 KiB
Python
"""
|
|
***************************************************************************
|
|
grass_provider.py
|
|
---------------------
|
|
Date : April 2014
|
|
Copyright : (C) 2014 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__ = "April 2014"
|
|
__copyright__ = "(C) 2014, Victor Olaya"
|
|
|
|
import json
|
|
from typing import List
|
|
from qgis.PyQt.QtCore import QCoreApplication
|
|
from qgis.core import (
|
|
Qgis,
|
|
QgsApplication,
|
|
QgsProcessingAlgorithm,
|
|
QgsProcessingProvider,
|
|
QgsVectorFileWriter,
|
|
QgsMessageLog,
|
|
QgsRuntimeProfiler,
|
|
)
|
|
from processing.core.ProcessingConfig import ProcessingConfig, Setting
|
|
from grassprovider.grass_utils import GrassUtils
|
|
from grassprovider.grass_algorithm import GrassAlgorithm
|
|
|
|
|
|
class GrassProvider(QgsProcessingProvider):
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
|
|
def load(self):
|
|
with QgsRuntimeProfiler.profile("Grass Provider"):
|
|
ProcessingConfig.settingIcons[self.name()] = self.icon()
|
|
ProcessingConfig.addSetting(
|
|
Setting(
|
|
self.name(),
|
|
GrassUtils.GRASS_LOG_COMMANDS,
|
|
self.tr("Log execution commands"),
|
|
False,
|
|
)
|
|
)
|
|
ProcessingConfig.addSetting(
|
|
Setting(
|
|
self.name(),
|
|
GrassUtils.GRASS_LOG_CONSOLE,
|
|
self.tr("Log console output"),
|
|
False,
|
|
)
|
|
)
|
|
ProcessingConfig.addSetting(
|
|
Setting(
|
|
self.name(),
|
|
GrassUtils.GRASS_HELP_URL,
|
|
self.tr("Location of GRASS docs"),
|
|
"",
|
|
)
|
|
)
|
|
# Add settings for using r.external/v.external instead of r.in.gdal/v.in.ogr
|
|
# but set them to False by default because the {r,v}.external implementations
|
|
# have some bugs on windows + there are algorithms that can't be used with
|
|
# external data (need a solid r.in.gdal/v.in.ogr).
|
|
# For more info have a look at e.g. https://trac.osgeo.org/grass/ticket/3927
|
|
ProcessingConfig.addSetting(
|
|
Setting(
|
|
self.name(),
|
|
GrassUtils.GRASS_USE_REXTERNAL,
|
|
self.tr(
|
|
"For raster layers, use r.external (faster) instead of r.in.gdal"
|
|
),
|
|
False,
|
|
)
|
|
)
|
|
ProcessingConfig.addSetting(
|
|
Setting(
|
|
self.name(),
|
|
GrassUtils.GRASS_USE_VEXTERNAL,
|
|
self.tr(
|
|
"For vector layers, use v.external (faster) instead of v.in.ogr"
|
|
),
|
|
False,
|
|
)
|
|
)
|
|
ProcessingConfig.readSettings()
|
|
self.refreshAlgorithms()
|
|
|
|
return True
|
|
|
|
def unload(self):
|
|
ProcessingConfig.removeSetting(GrassUtils.GRASS_LOG_COMMANDS)
|
|
ProcessingConfig.removeSetting(GrassUtils.GRASS_LOG_CONSOLE)
|
|
ProcessingConfig.removeSetting(GrassUtils.GRASS_HELP_URL)
|
|
ProcessingConfig.removeSetting(GrassUtils.GRASS_USE_REXTERNAL)
|
|
ProcessingConfig.removeSetting(GrassUtils.GRASS_USE_VEXTERNAL)
|
|
|
|
def parse_algorithms(self) -> list[QgsProcessingAlgorithm]:
|
|
"""
|
|
Parses all algorithm sources and returns a list of all GRASS
|
|
algorithms.
|
|
"""
|
|
algs = []
|
|
for folder in GrassUtils.grassDescriptionFolders():
|
|
if (folder / "algorithms.json").exists():
|
|
# fast approach -- use aggregated JSON summary of algorithms
|
|
with open(folder / "algorithms.json", encoding="utf8") as f_in:
|
|
algorithm_strings = f_in.read()
|
|
|
|
algorithms_json = json.loads(algorithm_strings)
|
|
for algorithm_json in algorithms_json:
|
|
try:
|
|
alg = GrassAlgorithm(
|
|
json_definition=algorithm_json, description_folder=folder
|
|
)
|
|
if alg.name().strip() != "":
|
|
algs.append(alg)
|
|
else:
|
|
QgsMessageLog.logMessage(
|
|
self.tr(
|
|
"Could not open GRASS GIS algorithm: {0}"
|
|
).format(algorithm_json.get("name")),
|
|
self.tr("Processing"),
|
|
Qgis.MessageLevel.Critical,
|
|
)
|
|
except Exception as e:
|
|
QgsMessageLog.logMessage(
|
|
self.tr(
|
|
"Could not open GRASS GIS algorithm: {0}\n{1}"
|
|
).format(algorithm_json.get("name"), e),
|
|
self.tr("Processing"),
|
|
Qgis.MessageLevel.Critical,
|
|
)
|
|
else:
|
|
# slow approach - pass txt files one by one
|
|
for descriptionFile in folder.glob("*.txt"):
|
|
try:
|
|
alg = GrassAlgorithm(description_file=descriptionFile)
|
|
if alg.name().strip() != "":
|
|
algs.append(alg)
|
|
else:
|
|
QgsMessageLog.logMessage(
|
|
self.tr(
|
|
"Could not open GRASS GIS algorithm: {0}"
|
|
).format(descriptionFile),
|
|
self.tr("Processing"),
|
|
Qgis.MessageLevel.Critical,
|
|
)
|
|
except Exception as e:
|
|
QgsMessageLog.logMessage(
|
|
self.tr(
|
|
"Could not open GRASS GIS algorithm: {0}\n{1}"
|
|
).format(descriptionFile, e),
|
|
self.tr("Processing"),
|
|
Qgis.MessageLevel.Critical,
|
|
)
|
|
return algs
|
|
|
|
def loadAlgorithms(self):
|
|
version = GrassUtils.installedVersion(True)
|
|
if version is None:
|
|
QgsMessageLog.logMessage(
|
|
self.tr(
|
|
"Problem with GRASS installation: GRASS was not found or is not correctly installed"
|
|
),
|
|
self.tr("Processing"),
|
|
Qgis.MessageLevel.Critical,
|
|
)
|
|
return
|
|
|
|
for a in self.parse_algorithms():
|
|
self.addAlgorithm(a)
|
|
|
|
def name(self):
|
|
return "GRASS"
|
|
|
|
def longName(self):
|
|
version = GrassUtils.installedVersion()
|
|
return f"GRASS GIS ({version})" if version is not None else "GRASS GIS"
|
|
|
|
def id(self):
|
|
return "grass"
|
|
|
|
def helpId(self):
|
|
return "grass7"
|
|
|
|
def icon(self):
|
|
return QgsApplication.getThemeIcon("/providerGrass.svg")
|
|
|
|
def svgIconPath(self):
|
|
return QgsApplication.iconPath("/providerGrass.svg")
|
|
|
|
def versionInfo(self):
|
|
return GrassUtils.installedVersion() or None
|
|
|
|
def supportsNonFileBasedOutput(self):
|
|
"""
|
|
GRASS Provider doesn't support non file based outputs
|
|
"""
|
|
return False
|
|
|
|
def supportedOutputVectorLayerExtensions(self):
|
|
# We use the same extensions as QGIS because:
|
|
# - QGIS is using OGR like GRASS
|
|
# - There are very few chances that OGR version used in GRASS is
|
|
# different from QGIS OGR version.
|
|
return super().supportedOutputVectorLayerExtensions()
|
|
|
|
def supportedOutputRasterLayerExtensions(self):
|
|
return GrassUtils.getSupportedOutputRasterExtensions()
|
|
|
|
def canBeActivated(self):
|
|
return not bool(GrassUtils.checkGrassIsInstalled())
|
|
|
|
def tr(self, string, context=""):
|
|
if context == "":
|
|
context = "Grass7AlgorithmProvider"
|
|
return QCoreApplication.translate(context, string)
|