/
iceexporter.py
256 lines (214 loc) · 9.63 KB
/
iceexporter.py
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###############################################################################
# ICE Explorer: A viewer and reader for ICE cache data
# Copyright (C) 2010 M.A. Belzile
#
# 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 3 of the License, or
# (at your option) any later version.
#
# This program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
###############################################################################
from PyQt4 import QtCore, QtGui
from icereader import ICEReader
from h5reader import H5Reader
from icereader_util import get_files_from_cache_folder, get_files
from consts import CONSTS
from process_pool import Pool
import ui_export_folder
import ui_export_file
import sys
import os
import time
class ICEExporter(QtCore.QObject):
""" Class to manage processes for exporting ICE cache data to ascii. """
# string: export file name
cacheExporting = QtCore.pyqtSignal( str )
# int: number of files to export
beginCacheExporting = QtCore.pyqtSignal( int )
endCacheExporting = QtCore.pyqtSignal( )
# states
STOP = 0
RUN = 1
ERROR = 2
def __init__(self, parent = None):
super(ICEExporter,self).__init__(parent)
self.files = []
self.state = self.STOP
self.destination_folder = '.'
self.t1 = 0
self.t2 = 0
self.fmt = CONSTS.TEXT_FMT
self.pool = Pool(self)
# dialogs
self._folder_dialog = ICEExportFolderDialog(self, parent)
self._file_dialog = ICEExportFileDialog(self, parent)
@property
def folder_dialog( self ):
return self._folder_dialog
@property
def file_dialog( self ):
return self._file_dialog
def cancel(self):
self.pool.cancel()
def export_folder( self, folder, destination, fmt=CONSTS.TEXT_FMT ):
""" Export the cache files contained in a folder """
(self.files,startindex,end) = get_files_from_cache_folder( folder )
self.destination_folder = destination
self.state = self.STOP
self.files_processed = 0
self.t1 = 0
self.t2 = 0
self.fmt = fmt
self._start()
def export_files( self, files, destination, fmt=CONSTS.TEXT_FMT):
""" Export a list of cache files """
(self.files,startindex,end) = get_files(files)
self.destination_folder = destination
self.state = self.STOP
self.t1 = 0
self.t2 = 0
self.fmt = fmt
self._start()
def _start( self ):
""" Start file export process. """
self.file_block = 1
self.indexset = range( 0, len(self.files), self.file_block )
# Submit export tasks to process pool
cpu_count = 1
if self.parent():
cpu_count = self.parent().prefs.process_count
else:
import multiprocessing as mp
cpu_count = mp.cpu_count()
self.pool.init( cpu_count, self._on_process_callback )
self.state = self.STOP
file_count = len(self.files)
self.files_processed = 0
for i in self.indexset:
file_list = []
for j in range(self.file_block):
if i+j < file_count:
file_list.append( self.files[i+j] )
self.pool.submit( ExportTask( [file_list, self.destination_folder, self.fmt] ) )
def _on_process_callback( self, sender, notif, arg ):
""" Called when an event occurs from a process """
if notif == Pool.STARTED:
#print 'Pool.STARTED'
if self.state == self.STOP:
self.t1 = time.time()
self.beginCacheExporting.emit( len(self.files) )
self.state = self.RUN
elif notif == Pool.ERROR:
print 'process error: %d - %s' % (sender.pid(), arg)
self.endCacheExporting.emit( )
self.state = self.ERROR
elif notif == Pool.STATE_CHANGE:
pass
elif notif == Pool.OUTPUT_MSG:
if self.state == self.ERROR:
return
s_out = bytes.decode( bytes( sender.readAllStandardOutput() ) )
#print 'Pool.OUTPUT_MSG: %s' % s_out
self.cacheExporting.emit( s_out )
elif notif == Pool.OUTPUT_ERROR_MSG:
s_out = bytes.decode( bytes( sender.readAllStandardError() ) )
print 'process error output: %s - %s\nRetry your operation.' % ((repr(sender)),s_out)
elif notif == Pool.FINISHED:
#print 'Pool.FINISHED'
if self.state == self.ERROR:
return
self.files_processed += self.file_block
if self.files_processed >= len(self.files):
self.t2 = time.time()
self.endCacheExporting.emit( )
self.state = self.STOP
print 'Export time %0.3f s' % (self.t2-self.t1)
class ExportTask(object):
""" Task to export cache files from a process """
def __init__(self,args):
"""
Process arguments:
arg0: list of files
arg1: target export folder
arg2: export format {TEXT|SIH5}
"""
self._cmd = 'python.exe export_process.py "%s" %s %d' % (repr(args[0]),args[1],int(args[2]))
def __call__(self):
""" Returns the process command """
return self._cmd
class ICEExportFolderDialog( QtGui.QDialog ):
"""Dialog for exporting folder data to text or hdf5 format"""
def __init__( self, exporter, parent=None ):
super( ICEExportFolderDialog, self ).__init__(parent)
#self.setWindowTitle("Export Folder Dialog")
self.fmt = None
self.exporter = exporter
self.ui = ui_export_folder.Ui_ExportFolder()
self.ui.setupUi( self )
self.ui.src_folder_btn.pressed.connect( self._on_select_folder_to_export )
self.ui.dst_folder_btn.pressed.connect( self._on_select_dest_folder )
def open( self, fmt ):
self.fmt = fmt
if self.fmt == CONSTS.SIH5_FMT:
title = 'Export Cache Folder to SIH5 Format'
else:
title = 'Export Cache Folder to Text Format'
self.setWindowTitle( title )
self.ui.dst_folder_edit.setText( self.parent().prefs.export_folder )
retval = self.exec_()
if retval == QtGui.QDialog.Accepted:
self.exporter.export_folder( self.ui.src_folder_edit.text(), self.ui.dst_folder_edit.text(), self.fmt )
def _on_select_folder_to_export(self):
self.parent().statusBar().clearMessage()
title = 'Select Cache Folder to Export'
folder = QtGui.QFileDialog.getExistingDirectory( self, title, '', QtGui.QFileDialog.ShowDirsOnly )
if not folder:
return
self.ui.src_folder_edit.setText( folder )
def _on_select_dest_folder(self):
self.parent().statusBar().clearMessage()
title = 'Select Destination Folder'
folder = QtGui.QFileDialog.getExistingDirectory( self, title, self.ui.dst_folder_edit.text(), QtGui.QFileDialog.ShowDirsOnly )
if not folder:
return
self.ui.dst_folder_edit.setText( folder )
class ICEExportFileDialog( QtGui.QDialog ):
"""Dialog for exporting data file(s) to text or hdf5 format"""
def __init__( self, exporter, parent=None ):
super( ICEExportFileDialog, self ).__init__(parent)
#self.setWindowTitle("Export Folder Dialog")
self.fmt = None
self.exporter = exporter
self.ui = ui_export_file.Ui_ExportFile()
self.ui.setupUi( self )
self.ui.dst_folder_btn.pressed.connect( self._on_select_dest_folder )
def open( self, files, fmt ):
self.fmt = fmt
if self.fmt == CONSTS.SIH5_FMT:
title = 'Export Cache Folder to SIH5 Format'
else:
title = 'Export Cache Folder to Text Format'
self.setWindowTitle( title )
self.ui.dst_folder_edit.setText( self.parent().prefs.export_folder )
retval = self.exec_()
if retval == QtGui.QDialog.Accepted:
self.exporter.export_files( files, self.ui.dst_folder_edit.text(), self.fmt )
def _on_select_dest_folder(self):
self.parent().statusBar().clearMessage()
title = 'Select Destination Folder'
folder = QtGui.QFileDialog.getExistingDirectory( self, title, self.ui.dst_folder_edit.text(), QtGui.QFileDialog.ShowDirsOnly )
if not folder:
return
self.ui.dst_folder_edit.setText( folder )
def test_export_file():
exporter = ICEExporter( )
exporter.export_files([r'C:\dev\icecache_data\cache50\29.icecache'], r'c:\temp', fmt=CONSTS.SIH5_FMT)
if __name__ == '__main__':
test_export_file()