/usr/share/pyshared/PyMca/QDataSource.py is in pymca 4.5.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | #/*##########################################################################
# Copyright (C) 2004-2011 European Synchrotron Radiation Facility
#
# This file is part of the PyMCA X-ray Fluorescence Toolkit developed at
# the ESRF by the Beamline Instrumentation Software Support (BLISS) group.
#
# This toolkit 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.
#
# PyMCA 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
# PyMCA; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307, USA.
#
# PyMCA follows the dual licensing model of Trolltech's Qt and Riverbank's PyQt
# and cannot be used as a free plugin for a non-free program.
#
# Please contact the ESRF industrial unit (industry@esrf.fr) if this license
# is a problem for you.
#############################################################################*/
"""
Demo example of generic access to data sources.
"""
import sys
import PyMcaQt as qt
QTVERSION = qt.qVersion()
#import QSPSDataSource
#import QSpecFileDataSource
#import QEdfFileDataSource
import SpecFileDataSource
import EdfFileDataSource
import QEdfFileWidget
import os
if 0 and QTVERSION < '4.0.0':
import MySpecFileSelector as QSpecFileWidget
QSpecFileWidget.QSpecFileWidget = QSpecFileWidget.SpecFileSelector
else:
import QSpecFileWidget
if (sys.platform == "win32") or (sys.platform == "darwin"):
source_types = { SpecFileDataSource.SOURCE_TYPE: SpecFileDataSource.SpecFileDataSource,
EdfFileDataSource.SOURCE_TYPE: EdfFileDataSource.EdfFileDataSource}
source_widgets = { SpecFileDataSource.SOURCE_TYPE: QSpecFileWidget.QSpecFileWidget,
EdfFileDataSource.SOURCE_TYPE: QEdfFileWidget.QEdfFileWidget}
sps = None
else:
#import SpsDataSource
import QSpsDataSource
sps = QSpsDataSource.SpsDataSource.sps
import QSpsWidget
source_types = { SpecFileDataSource.SOURCE_TYPE: SpecFileDataSource.SpecFileDataSource,
EdfFileDataSource.SOURCE_TYPE: EdfFileDataSource.EdfFileDataSource,
QSpsDataSource.SOURCE_TYPE: QSpsDataSource.QSpsDataSource}
source_widgets = { SpecFileDataSource.SOURCE_TYPE: QSpecFileWidget.QSpecFileWidget,
EdfFileDataSource.SOURCE_TYPE: QEdfFileWidget.QEdfFileWidget,
QSpsDataSource.SOURCE_TYPE: QSpsWidget.QSpsWidget}
NEXUS = True
try:
import NexusDataSource
import PyMcaNexusWidget
import h5py
except:
NEXUS = False
if NEXUS:
source_types[NexusDataSource.SOURCE_TYPE] = NexusDataSource.NexusDataSource
source_widgets[NexusDataSource.SOURCE_TYPE] = PyMcaNexusWidget.PyMcaNexusWidget
def getSourceType(sourceName0):
if type(sourceName0) == type([]):
sourceName = sourceName0[0]
else:
sourceName = sourceName0
if sps is not None:
if sourceName in sps.getspeclist():
return QSpsDataSource.SOURCE_TYPE
if not os.path.exists(sourceName):
if ('%' in sourceName):
try:
f = h5py.File(sourceName, 'r', driver='family')
f.close()
f = None
return NexusDataSource.SOURCE_TYPE
except:
pass
if os.path.exists(sourceName):
f = open(sourceName, 'rb')
if sys.version < '3.0':
line = f.readline()
if not len(line.replace("\n","")):
line = f.readline()
else:
tiff = False
try:
twoChars = f.read(2)
if twoChars in [eval("b'II'"), eval("b'MM'")]:
f.close()
return EdfFileDataSource.SOURCE_TYPE
except:
pass
f.seek(0)
try:
line = str(f.readline().decode())
if not len(line.replace("\n","")):
line = str(f.readline().decode())
except UnicodeDecodeError:
line = str(f.readline().decode("latin-1"))
if not len(line.replace("\n","")):
line = str(f.readline().decode("latin-1"))
f.close()
if sourceName.lower().endswith('.cbf'):
#pilatus CBF
mccd = True
elif len(line) < 2:
mccd = False
elif line[0:2] in ["II","MM"]:
#this also accounts for TIFF
mccd = True
elif sourceName.lower().endswith('.spe') and (line[0:1] != '$'):
#Roper images
mccd = True
else:
mccd = False
if (line.startswith("{")) or mccd:
return EdfFileDataSource.SOURCE_TYPE
else:
if NEXUS:
if h5py.is_hdf5(sourceName):
return NexusDataSource.SOURCE_TYPE
try:
f = h5py.File(sourceName, 'r')
f.close()
f = None
return NexusDataSource.SOURCE_TYPE
except:
pass
return SpecFileDataSource.SOURCE_TYPE
else:
return QSpsDataSource.SOURCE_TYPE
def QDataSource(name=None, source_type=None):
if name is None:
raise ValueError("Invalid Source Name")
if source_type is None:
source_type = getSourceType(name)
try:
sourceClass = source_types[source_type]
except KeyError:
#ERROR invalid source type
raise TypeError("Invalid Source Type, source type should be one of %s" % source_types.keys())
return sourceClass(name)
if __name__ == "__main__":
import sys,time
try:
sourcename=sys.argv[1]
key =sys.argv[2]
except:
print("Usage: QDataSource <sourcename> <key>")
sys.exit()
#one can use this:
#obj = EdfFileDataSource(sourcename)
#or this:
obj = QDataSource(sourcename)
#data = obj.getData(key,selection={'pos':(10,10),'size':(40,40)})
#data = obj.getData(key,selection={'pos':None,'size':None})
data = obj.getDataObject(key)
print("info = ",data.info)
print("data shape = ",data.data.shape)
|