Source code for PyMca5.PyMcaIO.SRSFileParser

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# The PyMca X-Ray Fluorescence Toolkit
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__author__ = "V.A. Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
import sys
import os
import numpy
from PyMca5.PyMcaIO import SpecFileAbstractClass

DEBUG = 0

[docs]class BufferedFile(object): def __init__(self, filename): f = open(filename, 'r') self.__buffer = f.read() f.close() self.__buffer = self.__buffer.replace("\r", "\n") self.__buffer = self.__buffer.replace("\n\n", "\n") self.__buffer = self.__buffer.split("\n") self.__currentLine = 0
[docs] def readline(self): if self.__currentLine >= len(self.__buffer): return "" line = self.__buffer[self.__currentLine] self.__currentLine += 1 return line
[docs] def close(self): self.__buffer = [""] self.__currentLine = 0 return
[docs]class SRSFileParser(object): def __init__(self, filename, sum_all=False): if not os.path.exists(filename): raise IOError("File %s does not exists" % filename) _fileObject = BufferedFile(filename) #Only one measurement per file header = [] header.append('#S 1 %s Unknown command' % os.path.basename(filename)) #read the data line = _fileObject.readline() self.motorNames = [] self.motorValues = [] readingMetaData = False endReached = False readingData = False data = [] while len(line)>1: if not readingData: header.append(line[:-1]) if readingMetaData: if '</MetaDataAtStart>' in line: readingMetaData = False elif '=' in line: key, value = line[:-1].split('=') if 'datestring' in key: header.append('#D %s' % value) elif 'scancommand' in key: header[0] = '#S 1 %s' % value else: self.motorNames.append(key) self.motorValues.append(value) elif '<MetaDataAtStart>' in line: readingMetaData = True elif '&END' in line: endReached = True elif endReached: if readingData: tmpLine = line[:-1].replace("\t", " ").split(" ") data.append([float(x) for x in tmpLine]) else: labels = line[:-1].replace("\t", " ").split(" ") readingData = True else: if DEBUG: print("Unhandled line %s" % line[:-1]) line = _fileObject.readline() header.append("#N %d" % len(labels)) txt = "#L " for label in labels: txt += " %s" % label header.append(txt + "\n") data = numpy.array(data) #create an abstract scan object self._scan = [SRSScan(data, scantype='SCAN', scanheader=header, labels=labels, motor_values=self.motorValues, point=False)] _fileObject = None data = None #the methods below are called by PyMca on any SPEC file def __getitem__(self, item): return self._scan[item]
[docs] def scanno(self): """ Gives back the number of scans in the file """ return len(self_scan)
[docs] def list(self): return "1:1"
[docs] def select(self, key): """ key is of the from s.o scan number, scan order """ n = key.split(".") return self.__getitem__(int(n[0])-1)
[docs] def allmotors(self): return self.motorNames
[docs]class SRSScan(SpecFileAbstractClass.SpecFileAbstractScan): def __init__(self, data, scantype='MCA', identification="1.1", scanheader=None, labels=None, motor_values=None,point=False): SpecFileAbstractClass.SpecFileAbstractScan.__init__(self, data, scantype=scantype, identification=identification, scanheader=scanheader, labels=labels,point=point) if motor_values is None: motor_values = [] self.motorValues = motor_values
[docs] def allmotorpos(self): return self.motorValues
[docs]def isSRSFile(filename): f = open(filename, mode = 'r') try: if '&SRS' in f.readline(): f.close() return True except: pass f.close() return False
[docs]def test(filename): if isSRSFile(filename): sf=SRSFileParser(filename) else: print("Not a SRS File") print(sf[0].header('S')) print(sf[0].header('D')) print(sf[0].alllabels()) print(sf[0].allmotors())
if __name__ == "__main__": test(sys.argv[1])