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metatools.py
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# -*- coding: utf-8 -*-
#******************************************************************************
#
# Metatools
# ---------------------------------------------------------
# Metadata browser/editor
#
# Copyright (C) 2011-2016 NextGIS (info@nextgis.com)
#
# This source 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.
#
# This code is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# A copy of the GNU General Public License is available on the World Wide Web
# at <http://www.gnu.org/copyleft/gpl.html>. You can also obtain it by writing
# to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
# MA 02111-1307, USA.
#
#******************************************************************************
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from qgis.gui import *
import os, sys
from metatoolssettings import MetatoolsSettings
from standard import MetaInfoStandard
from error_handler import ErrorHandler
from metadata_provider import MetadataProvider
import resources
minQtVersion = '4.6.0'
currentPath = os.path.abspath(os.path.dirname(__file__))
class MetatoolsPlugin:
def __init__(self, iface):
self.iface = iface
self.loadingCanceled = False
try:
self.QgisVersion = unicode(QGis.QGIS_VERSION_INT)
except:
self.QgisVersion = unicode(QGis.qgisVersion)[0]
# get plugin folder (more simple version of original plugin)
self.pluginPath = currentPath
# i18n support
overrideLocale = QSettings().value("locale/overrideFlag", False)
if not overrideLocale:
localeFullName = QLocale.system().name()
else:
localeFullName = QSettings().value("locale/userLocale", "")
self.localePath = self.pluginPath + "/i18n/metatools_" + localeFullName[0:2] + ".qm"
if QFileInfo(self.localePath).exists():
self.translator = QTranslator()
self.translator.load(self.localePath)
QCoreApplication.installTranslator(self.translator)
def initGui(self):
if int(self.QgisVersion) < 10900:
QMessageBox.warning(self.iface.mainWindow(), "Metatools",
QCoreApplication.translate("Metatools", "Quantum GIS version detected: %d.%d\n") % (self.QgisVersion[0], self.QgisVersion[2]) +
QCoreApplication.translate("Metatools", "This version of Metatools requires at least QGIS version 2.0\nPlugin will not be enabled.")
)
self.loadingCanceled = True
return None
if qVersion() < minQtVersion:
QMessageBox.warning(self.iface.mainWindow(), "Metatools",
QCoreApplication.translate("Metatools", "Qt version detected: %s\n") % (qVersion()) +
QCoreApplication.translate("Metatools", "This version of Metatools requires at least Qt version %s\nPlugin will not be enabled.") % (minQtVersion)
)
self.loadingCanceled = True
return None
# create editAction that will start metadata editor
self.editAction = QAction(QIcon(":/plugins/metatools/icons/edit.png"), QCoreApplication.translate("Metatools", "Edit metadata"), self.iface.mainWindow())
self.editAction.setStatusTip(QCoreApplication.translate("Metatools", "Edit metadata"))
self.editAction.setWhatsThis(QCoreApplication.translate("Metatools", "Edit metadata"))
# create applyTemplateAction that will start templates manager
self.applyTemplatesAction = QAction(QIcon(":/plugins/metatools/icons/templates.png"), QCoreApplication.translate("Metatools", "Apply templates"), self.iface.mainWindow())
self.applyTemplatesAction.setStatusTip(QCoreApplication.translate("Metatools", "Edit and apply templates"))
self.applyTemplatesAction.setWhatsThis(QCoreApplication.translate("Metatools", "Edit and apply templates"))
# create viewAction that will start metadata viewer
self.viewAction = QAction(QIcon(":/plugins/metatools/icons/view.png"), QCoreApplication.translate("Metatools", "View metadata"), self.iface.mainWindow())
self.viewAction.setStatusTip(QCoreApplication.translate("Metatools", "View metadata"))
self.viewAction.setWhatsThis(QCoreApplication.translate("Metatools", "View metadata"))
# create configAction that will start plugin configuration
self.configAction = QAction(QIcon(":/plugins/metatools/icons/settings.png"), QCoreApplication.translate("Metatools", "Configure Metatools plugin"), self.iface.mainWindow())
self.configAction.setStatusTip(QCoreApplication.translate("Metatools", "Configure plugin"))
self.configAction.setWhatsThis(QCoreApplication.translate("Metatools", "Configure plugin"))
# create configAction that will start plugin configuration
self.validateAction = QAction(QIcon(":/plugins/metatools/icons/check.png"), QCoreApplication.translate("Metatools", "Validate metadata"), self.iface.mainWindow())
self.validateAction.setStatusTip(QCoreApplication.translate("Metatools", "Validate metadata"))
self.validateAction.setWhatsThis(QCoreApplication.translate("Metatools", "Validate metadata"))
self.importAction = QAction(QIcon(":/plugins/metatools/icons/import.png"), QCoreApplication.translate("Metatools", "Import metadata"), self.iface.mainWindow())
self.importAction.setStatusTip(QCoreApplication.translate("Metatools", "Import metadata from file"))
self.importAction.setWhatsThis(QCoreApplication.translate("Metatools", "Import metadata"))
self.exportAction = QAction(QIcon(":/plugins/metatools/icons/export.png"), QCoreApplication.translate("Metatools", "Export metadata"), self.iface.mainWindow())
self.exportAction.setStatusTip(QCoreApplication.translate("Metatools", "Export metadata"))
self.exportAction.setWhatsThis(QCoreApplication.translate("Metatools", "Export metadata to file"))
self.metaBrowserAction = QAction(QIcon(":/plugins/metatools/icons/view.png"), QCoreApplication.translate("Metatools", "Metadata browser"), self.iface.mainWindow())
self.metaBrowserAction.setStatusTip(QCoreApplication.translate("Metatools", "Metadata browser"))
self.metaBrowserAction.setWhatsThis(QCoreApplication.translate("Metatools", "Metadata browser"))
# ------------ FGDC actions
# Tkme action
self.usgsAction = QAction(QIcon(":/plugins/metatools/icons/usgs.png"), QCoreApplication.translate("Metatools", "USGS Tool"), self.iface.mainWindow())
self.usgsAction.setStatusTip(QCoreApplication.translate("Metatools", "USGS Tool"))
self.usgsAction.setWhatsThis(QCoreApplication.translate("Metatools", "USGS Tool"))
# mp action
self.mpAction = QAction(QIcon(":/plugins/metatools/icons/usgs_check.png"), QCoreApplication.translate("Metatools", "MP Tool"), self.iface.mainWindow())
self.mpAction.setStatusTip(QCoreApplication.translate("Metatools", "MP Tool"))
self.mpAction.setWhatsThis(QCoreApplication.translate("Metatools", "MP Tool"))
settings = QSettings("NextGIS", "metatools")
hasTools = settings.value("QgsCollapsibleGroupBox/gbFGDCTools/checked", False)
if not hasTools:
self.usgsAction.setEnabled(False)
self.mpAction.setEnabled(False)
self.editAction.triggered.connect(self.doEdit)
self.applyTemplatesAction.triggered.connect(self.doApplyTemplates)
self.viewAction.triggered.connect(self.doView)
self.configAction.triggered.connect(self.doConfigure)
self.validateAction.triggered.connect(self.validateMetadataFile)
self.usgsAction.triggered.connect(self.execUsgs)
self.mpAction.triggered.connect(self.execMp)
self.importAction.triggered.connect(self.doImport)
self.exportAction.triggered.connect(self.doExport)
# add menu items
self.iface.addPluginToMenu("Metatools", self.usgsAction)
self.iface.addPluginToMenu("Metatools", self.mpAction)
self.iface.addPluginToMenu("Metatools", self.importAction)
self.iface.addPluginToMenu("Metatools", self.exportAction)
self.iface.addPluginToMenu("Metatools", self.viewAction)
self.iface.addPluginToMenu("Metatools", self.editAction)
self.iface.addPluginToMenu("Metatools", self.validateAction)
self.iface.addPluginToMenu("Metatools", self.applyTemplatesAction)
self.iface.addPluginToMenu("Metatools", self.configAction)
# add toolbar and buttons
self.toolBar = self.iface.addToolBar(QCoreApplication.translate("Metatools", "Metatools"))
self.toolBar.setObjectName(QCoreApplication.translate("Metatools", "Metatools"))
self.toolBar.addAction(self.importAction)
self.toolBar.addAction(self.exportAction)
self.toolBar.addSeparator()
self.toolBar.addAction(self.viewAction)
self.toolBar.addAction(self.editAction)
self.toolBar.addAction(self.validateAction)
self.toolBar.addSeparator()
self.toolBar.addAction(self.applyTemplatesAction)
self.toolBar.addAction(self.configAction)
# add fgdc toolbar
self.fgdcToolBar = self.iface.addToolBar(QCoreApplication.translate("Metatools", "Metatools: FGDC tools"))
self.fgdcToolBar.setObjectName(QCoreApplication.translate("Metatools", "Metatools: FGDC tools"))
self.fgdcToolBar.addAction(self.usgsAction)
self.fgdcToolBar.addAction(self.mpAction)
# track layer changing
self.iface.currentLayerChanged.connect(self.layerChanged)
# disable some actions when there is no active layer
self.layer = None
self.disableLayerActions()
# check already selected layers
self.layerChanged()
def unload(self):
if self.loadingCanceled:
return
# disconnect signals
self.iface.currentLayerChanged.disconnect(self.layerChanged)
# remove the plugin menu items and toolbar
self.iface.removePluginMenu("Metatools", self.editAction)
self.iface.removePluginMenu("Metatools", self.applyTemplatesAction)
self.iface.removePluginMenu("Metatools", self.viewAction)
self.iface.removePluginMenu("Metatools", self.configAction)
self.iface.removePluginMenu("Metatools", self.validateAction)
self.iface.removePluginMenu("Metatools", self.usgsAction)
self.iface.removePluginMenu("Metatools", self.mpAction)
self.iface.removePluginMenu("Metatools", self.importAction)
self.iface.removePluginMenu("Metatools", self.exportAction)
del self.toolBar
del self.fgdcToolBar
def layerChanged(self):
self.layer = self.iface.activeLayer()
# check layer type - return (True/False, Desc)
res = MetadataProvider.IsLayerSupport(self.layer)
if not res[0]:
self.disableLayerActions()
self.layer = None
self.metaProvider = None
else:
self.enableLayerActions()
self.metaProvider = MetadataProvider.getProvider(self.layer)
def disableLayerActions(self):
self.viewAction.setEnabled(False)
self.editAction.setEnabled(False)
self.usgsAction.setEnabled(False)
self.mpAction.setEnabled(False)
self.validateAction.setEnabled(False)
self.importAction.setEnabled(False)
self.exportAction.setEnabled(False)
def enableLayerActions(self):
settings = QSettings("NextGIS", "metatools")
hasTools = settings.value("tools/hasFGDC", False)
self.viewAction.setEnabled(True)
self.editAction.setEnabled(True)
self.usgsAction.setEnabled(hasTools and settings.value("tools/tkme", "") != "")
self.mpAction.setEnabled(hasTools and settings.value("tools/mp", "") != "")
self.validateAction.setEnabled(True)
self.importAction.setEnabled(True)
self.exportAction.setEnabled(True)
def doEdit(self):
try:
from metatoolseditor import MetatoolsEditor
except:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Editor can't be loaded: %s %s!") % (unicode(sys.exc_info()[0]), unicode(sys.exc_info()[1]))
)
return
# check if metadata file exists
if not self.checkMetadata():
return
# check matadata standard
standard = MetaInfoStandard.tryDetermineStandard(self.metaProvider)
if standard != MetaInfoStandard.ISO19115 and standard != MetaInfoStandard.FGDC:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Unsupported metadata standard! Only ISO19115 and FGDC supported now!")
)
return
dlg = MetatoolsEditor()
dlg.setContent(self.metaProvider)
dlg.exec_()
def doConfigure(self):
dlg = MetatoolsSettings()
dlg.exec_()
settings = QSettings("NextGIS", "metatools")
hasTools = settings.value("tools/hasFGDC", False)
if hasTools:
self.usgsAction.setEnabled(settings.value("tools/tkme", "") != "")
self.mpAction.setEnabled(settings.value("tools/mp", "") != "")
def doApplyTemplates(self):
try:
from apply_templates_dialog import ApplyTemplatesDialog
except ImportError:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Applyer can't be loaded: %s %s!") % (unicode(sys.exc_info()[0]), unicode(sys.exc_info()[1]))
)
return
dlg = ApplyTemplatesDialog(self.iface)
dlg.exec_()
def doView(self):
try:
from metatoolsviewer import MetatoolsViewer
except:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Viewer can't be loaded: %s %s!") % (unicode(sys.exc_info()[0]), unicode(sys.exc_info()[1]))
)
return
# check metadata exists
if not self.checkMetadata():
return
# check matadata standard
standard = MetaInfoStandard.tryDetermineStandard(self.metaProvider)
if standard != MetaInfoStandard.ISO19115 and standard != MetaInfoStandard.FGDC:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Unsupported metadata standard! Only ISO19115 and FGDC supported now!")
)
return
# TODO: validate metadata file
# get xsl file path
settings = QSettings("NextGIS", "metatools")
if standard == MetaInfoStandard.ISO19115:
xsltFilePath = os.path.join(self.pluginPath, "xsl/") + settings.value("iso19115/stylesheet", "iso19115.xsl")
if standard == MetaInfoStandard.FGDC:
xsltFilePath = os.path.join(self.pluginPath, "xsl/") + settings.value("fgdc/stylesheet", "fgdc.xsl")
dlg = MetatoolsViewer()
if dlg.setContent(self.metaProvider, xsltFilePath):
dlg.exec_()
def checkMetadata(self):
if not self.metaProvider.checkExists():
result = QMessageBox.question(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "The layer does not have metadata! Create metadata?"),
QDialogButtonBox.Yes, QDialogButtonBox.No
)
if result == QDialogButtonBox.Yes:
try:
settings = QSettings("NextGIS", "metatools")
profile = settings.value("general/defaultProfile", "")
if profile == "":
QMessageBox.warning(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "No profile selected. Please set default profile in plugin settings")
)
return False
profilePath = unicode(QDir.toNativeSeparators(os.path.join(currentPath, "xml_profiles", unicode(profile))))
self.metaProvider.ImportFromFile(profilePath)
except:
QMessageBox.warning(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Metadata file can't be created: ") + unicode(sys.exc_info()[1])
)
return False
return True
else:
return False
else:
return True
# ----------------- external tools -----------------
def execUsgs(self):
settings = QSettings("NextGIS", "metatools")
if not settings.value("tools/hasFGDC", False):
return
# check if metadata file exists
if not self.checkMetadata():
return
# check matadata standard
standard = MetaInfoStandard.tryDetermineStandard(self.metaProvider)
if standard != MetaInfoStandard.FGDC:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "USGS tool support only FGDC standard!")
)
return
# start tool
execFilePath = settings.value("tools/tkme", "")
try:
import subprocess
prov = self.metaProvider
temporaryMetafile = prov.SaveToTempFile()
subprocess.Popen([unicode(execFilePath), unicode(temporaryMetafile)], cwd=toolPath).wait()
prov.LoadFromTempFile(temporaryMetafile)
except:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "USGS tool can't be runing: ") + unicode(sys.exc_info()[1])
)
def execMp(self):
settings = QSettings("NextGIS", "metatools")
if not settings.value("tools/hasFGDC", False):
return
# check if metadata exists
if not self.checkMetadata():
return
# check matadata standard
standard = MetaInfoStandard.tryDetermineStandard(self.metaProvider)
if standard != MetaInfoStandard.FGDC:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "MP tool support only FGDC standard!")
)
return
# start tool
mpFilePath = settings.value("tools/mp", "")
errFilePath = settings.value("tools/err2html", "")
tempPath = os.tempnam()
temporaryMetafile = self.metaProvider.SaveToTempFile()
result = ''
try:
import subprocess
subprocess.check_call([mpFilePath, "-e", tempPath, temporaryMetafile], shell=throwShell, cwd=toolPath)
if sys.hexversion >= 34013184:
result = subprocess.check_output([errFilePath, tempPath], shell=throwShell, cwd=toolPath)
else:
# workaround for python < 2.7
# ... stderr=subprocess.STDOUT, stdin=subprocess.PIPE ... ! FUCKED Python 2.5 bug on windows!
err2htmlProc = subprocess.Popen([errFilePath, tempPath], shell=throwShell, cwd=toolPath, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.PIPE)
err2htmlProc.stdin.close()
result = err2htmlProc.communicate()[0]
except:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "MP tool can't be runing: ") + unicode(sys.exc_info()[1])
)
return
finally:
if os.path.exists(tempPath):
os.remove(tempPath)
# explicit kill temporary metafile
if os.path.exists(temporaryMetafile):
os.remove(temporaryMetafile)
# show result
from metatoolsviewer import MetatoolsViewer
dlg = MetatoolsViewer()
dlg.setHtml(result)
dlg.setWindowTitle(QCoreApplication.translate("Metatools", "MP result"))
dlg.exec_()
# ----------------- validator -----------------
def validateMetadataFile(self):
# check if metadata exists
if not self.checkMetadata():
return
# check matadata standard
standard = MetaInfoStandard.tryDetermineStandard(self.metaProvider)
if standard != MetaInfoStandard.FGDC:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Unsupported metadata standard! Only FGDC supported now!")
)
return
from PyQt4.QtXmlPatterns import QXmlSchema, QXmlSchemaValidator
# TODO: validate metadata file
# setup xml schema
schema = QXmlSchema()
# setup handler
self.handler = ErrorHandler(QCoreApplication.translate("Metatools", "Metadata is invalid"))
schema.setMessageHandler(self.handler)
# load schema from file
xsdFilePath = self.pluginPath + '/xsd/fgdc/fgdc-std-001-1998.xsd'
#if standard != MetaInfoStandard.FGDC:
# xsdFilePath = 'c:/xsd/gml/basicTypes.xsd' # gmd/gmd.xsd'
schemaUrl = QUrl(xsdFilePath)
loadResult = schema.load(schemaUrl)
if not loadResult or self.handler.errorOccured:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Schema for validate not loaded!")
)
return
#setup validator
validator = QXmlSchemaValidator(schema)
validator.setMessageHandler(self.handler)
#validate
metadata = self.metaProvider.getMetadata().encode('utf-8')
if validator.validate(metadata):
QMessageBox.information(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Metadata is valid!")
)
# ----------------- import\ export -----------------
def doImport(self):
# check if metadata exists
if not self.checkMetadata():
return
fileName = QFileDialog.getOpenFileName(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Select metadata file"),
"",
QCoreApplication.translate("Metatools", 'XML files (*.xml);;Text files (*.txt *.TXT);;All files (*.*)')
)
if fileName == "":
return
try:
self.metaProvider.ImportFromFile(unicode(fileName))
except:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Metadata can't be imported: ") + unicode(sys.exc_info()[1])
)
return
QMessageBox.information(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Metadata was imported successful!")
)
def doExport(self):
# check if metadata exists
if not self.checkMetadata():
return
fileName = QFileDialog.getSaveFileName(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Save metadata to file"),
"",
QCoreApplication.translate("Metatools", 'XML files (*.xml);;Text files (*.txt *.TXT);;All files (*.*)')
)
if fileName == "":
return
try:
self.metaProvider.ExportToFile(unicode(fileName))
except:
QMessageBox.critical(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Metadata can't be exported: ") + unicode(sys.exc_info()[1])
)
return
QMessageBox.information(self.iface.mainWindow(),
QCoreApplication.translate("Metatools", "Metatools"),
QCoreApplication.translate("Metatools", "Metadata was exported successful!")
)