def getResultFile(self, identifier, mimeType, encoding, schema, reply):
# Get a unique temporary file name
myQTempFile = QTemporaryFile()
myQTempFile.open()
ext = getFileExtension(self.mimeType)
tmpFile = myQTempFile.fileName() + ext
myQTempFile.close()
# Write the data to the temporary file
outFile = QFile(tmpFile)
outFile.open(QIODevice.WriteOnly)
outFile.write(reply.readAll())
outFile.close()
resultFile = self.wps.handleEncoded(tmpFile, mimeType, encoding, schema)
# Finally, load the data
self.loadData(resultFile)
self.setStatusLabel('finished')
def handleChunk(self, reply):
""" Store the file received """
#reply.deleteLater() # Recommended way to delete the reply
chunkId = reply.property("chunkId").toInt()[0]
encoding = reply.property("encoding").toString()
# Check if there is redirection
reDir = reply.attribute(QNetworkRequest.RedirectionTargetAttribute).toUrl()
if not reDir.isEmpty():
self.urlReady.emit(encoding, chunkId, reDir.toString())
return
if self.DEBUG: print "GET chunk", chunkId
# Update progressBar
if self.chunks:
self.parent.progressBar.setValue(self.__deliveredChunks + 1)
self.parent.lblProcess.setText("Downloading chunks... ("+str(self.__deliveredChunks + 1)+"/"+str(self.chunks)+")")
# Get a unique temporary file name
tmpFile = tempfile.NamedTemporaryFile(prefix="base64",
suffix=getFileExtension(self.mimeType), dir=self.__chunksDir, delete=False )
# TODO: Check if the file name already exists!!!
# Write the data to the temporary file
outFile = QFile(tmpFile.name)
outFile.open(QIODevice.WriteOnly)
outFile.write(reply.readAll())
outFile.close()
# Decode?
if encoding == "base64":
resultFile = decodeBase64(tmpFile.name, self.mimeType, self.__chunksDir)
else:
resultFile = tmpFile.name
# Finally, load the data
if self.DEBUG: print "READY to be loaded (", resultFile, ", chunkId:", chunkId, ")"
self.dataReady.emit(resultFile, chunkId) # SLOT: loadData
def handleChunk(self, reply):
""" Store the file received """
#reply.deleteLater() # Recommended way to delete the reply
chunkId = reply.property("chunkId").toInt()[0]
encoding = reply.property("encoding").toString()
# Check if there is redirection
reDir = reply.attribute(QNetworkRequest.RedirectionTargetAttribute).toUrl()
if not reDir.isEmpty():
self.urlReady.emit(encoding, chunkId, reDir.toString())
return
if self.DEBUG: print "GET chunk", chunkId
# Update progressBar
if self.chunks:
self.parent.progressBar.setValue(self.__deliveredChunks + 1)
self.parent.lblProcess.setText("Downloading chunks... ("+str(self.__deliveredChunks + 1)+"/"+str(self.chunks)+")")
# Get a unique temporary file name
tmpFile = tempfile.NamedTemporaryFile(prefix="base64",
suffix=getFileExtension(self.mimeType), dir=self.__chunksDir, delete=False )
# TODO: Check if the file name already exists!!!
# Write the data to the temporary file
outFile = QFile(tmpFile.name)
outFile.open(QIODevice.WriteOnly)
outFile.write(reply.readAll())
outFile.close()
# Decode?
if encoding == "base64":
resultFile = decodeBase64(tmpFile.name, self.mimeType, self.__chunksDir)
else:
resultFile = tmpFile.name
# Finally, load the data
if self.DEBUG: print "READY to be loaded (", resultFile, ", chunkId:", chunkId, ")"
self.dataReady.emit(resultFile, chunkId) # SLOT: loadData
def getResultFile(self, identifier, mimeType, encoding, schema, reply):
# Get a unique temporary file name
myQTempFile = QTemporaryFile()
myQTempFile.open()
ext = getFileExtension(self.mimeType)
tmpFile = myQTempFile.fileName() + ext
myQTempFile.close()
# Write the data to the temporary file
outFile = QFile(tmpFile)
outFile.open(QIODevice.WriteOnly)
outFile.write(reply.readAll())
reply.deleteLater()
outFile.close()
resultFile = self.wps.handleEncoded(tmpFile, mimeType, encoding, schema)
# Finally, load the data
self.loadData(resultFile)
self.setStatus('finished')
def finishLoading(self):
""" Finish the loading process, load the definite assembled layer """
if self.DEBUG: print "DONE!"
if not self.__bFirstChunk:
if isMimeTypeVector(self.mimeType, True) != None:
self.removeTempGeometry(self.__geometryType)
QgsMapLayerRegistry.instance().addMapLayer(self.__memoryLayer)
elif isMimeTypeRaster(self.mimeType, True) != None:
self.parent.lblProcess.setText("All tiles are loaded. Merging them...")
# Generate gdal virtual raster
# Code adapted from GdalTools (C) 2009 by L. Masini and G. Sucameli (Faunalia)
self.process = QProcess(self)
self.connect(self.process, SIGNAL("finished(int, QProcess::ExitStatus)"),
self.loadVirtualRaster)
#self.setProcessEnvironment(self.process) Required in Windows?
cmd = "gdalbuildvrt"
arguments = []
if platform.system() == "Windows" and cmd[-3:] == ".py":
command = cmd[:-3] + ".bat"
else:
command = cmd
tmpFile = tempfile.NamedTemporaryFile(prefix="virtual",
suffix=".vrt")
self.__virtualFile = tmpFile.name
arguments.append(self.__virtualFile)
rasters = self.getRasterFiles(self.__chunksDir,
getFileExtension(self.mimeType))
for raster in rasters:
arguments.append(raster)
self.process.start(command, arguments, QIODevice.ReadOnly)
if not self.__exceptionFound:
self.parent.setStatusLabel('finished')
self.parent.progressBar.setRange(0,100)
self.parent.progressBar.setValue(100)
def finishLoading(self):
""" Finish the loading process, load the definite assembled layer """
if self.DEBUG: print "DONE!"
if not self.__bFirstChunk:
if isMimeTypeVector(self.mimeType, True) != None:
self.removeTempGeometry(self.__geometryType)
QgsMapLayerRegistry.instance().addMapLayer(self.__memoryLayer)
elif isMimeTypeRaster(self.mimeType, True) != None:
self.parent.lblProcess.setText("All tiles are loaded. Merging them...")
# Generate gdal virtual raster
# Code adapted from GdalTools (C) 2009 by L. Masini and G. Sucameli (Faunalia)
self.process = QProcess(self)
self.connect(self.process, SIGNAL("finished(int, QProcess::ExitStatus)"),
self.loadVirtualRaster)
#self.setProcessEnvironment(self.process) Required in Windows?
cmd = "gdalbuildvrt"
arguments = pystringlist()
if platform.system() == "Windows" and cmd[-3:] == ".py":
command = cmd[:-3] + ".bat"
else:
command = cmd
tmpFile = tempfile.NamedTemporaryFile(prefix="virtual",
suffix=".vrt")
self.__virtualFile = tmpFile.name
arguments.append(self.__virtualFile)
rasters = self.getRasterFiles(self.__chunksDir,
getFileExtension(self.mimeType))
for raster in rasters:
arguments.append(raster)
self.process.start(command, arguments, QIODevice.ReadOnly)
if not self.__exceptionFound:
self.parent.setStatusLabel('finished')
self.parent.progressBar.setRange(0,100)
self.parent.progressBar.setValue(100)
