convertDecayFile.py
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convertDecayFile.py
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	#!/usr/bin/python
	import sys

	comments = True

	def main(inFile, outFile, extraFiles):
	#open our files
	fh1 = open(inFile,"r")
	fh2 = open(outFile, "w")
	data = fh1.readlines()

	allowedParticles = []
	particleData = {}

	#open extra files to get aliases
	firstWordIsAlias = False
	for file in extraFiles:
	extrafh = open(file,"r")
	extradata = extrafh.readlines()
	for line in extradata:
	words = line.split()
	if len(words) == 0:
	continue
	if firstWordIsAlias:
	allowedParticles.append(words[0])
	firstWordIsAlias = False
	for x in range(len(words)-1):
	if words[x][0] == '#':
	break
	elif words[x] == "Alias":
	allowedParticles.append(words[x+1])
	if words[len(words)-1] == "Alias":
	firstWordIsAlias = True
	extrafh.close()

	#assemble particles list
	fhPDL = open("evt.pdl","r")
	pdlData = fhPDL.readlines()
	for line in pdlData:
	words = line.split()
	if words[0] == "add" and words[2] == "Particle":
	allowedParticles.append(words[3])
	fhPDL.close()

	#keep count of some things
	count = 0
	countComment = 0
	countDec = 0
	countParticle = 0
	countAlias = 0
	countModelAlias = 0
	countDef = 0
	countConj = 0
	countConjDecay = 0
	countLineShapePW = 0
	countPhotos = 0
	countBad = 0
	countCopyDec = 0
	countRemoveDec = 0
	countPythia6 = 0

	#flags to figure out if we're in a decay block
	inDecay = False
	inRemoveDecay = False
	#store unused tokens from previous lines
	previousLine=""
	getMore=True

	#first print the top
	fh2.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n")
	fh2.write("<?xml-stylesheet href=\"DECAY.XSL\" type=\"text/xsl\" ?>\n")
	fh2.write("<data>\n")
	fh2.write("\t<Title>"+outFile+"</Title>\n")
	fh2.write("\t<Details>XML Decay File for EvtGen - automatically generated by convertDecayFile.py</Details>\n")
	fh2.write("\t<Author>convertDecayFile.py</Author>\n")
	fh2.write("\t<Version>1.0</Version>\n")

	for line in data:
	#add in anything we had previously
	if previousLine:
	line = " ".join([previousLine,line])
	previousLine = ""
	getMore = False
	line = line.strip(" \t")
	while line and not getMore:
	line = line.strip(" \t")
	line = line.lstrip("\n")
	if not line:#catch any lines that were just whitespace here
	continue
	#check if we have a comment
	if line[0] == '#':
	countComment += 1
	if line.find('\n')!=-1:
	comment = line.split('\n',1)[0]
	line = line.split('\n',1)[1]
	else:
	comment = line
	line = ""
	if comments:
	comment = comment.strip("#")
	while comment.find("--") != -1:#illegal sequence in XML comments
	comment = comment.replace("--","-")
	if comment and comment != "-":#ignore empty comments
	comment = "<!--"+comment+" -->\n"
	fh2.write(comment)
	continue
	count += 1
	#split the line into words and check it's not empty
	words = line.split()
	if len(words) == 0:
	fh2.write(line)
	getMore = True
	continue
	#are we currently parsing a decay?
	if inDecay:
	if words[0] == "Enddecay":
	fh2.write("\t</decay>\n")
	inDecay = False
	if len(words) > 1:
	line = " ".join(words[1:])
	else:
	getMore = True
	else:
	br = words[0]
	daughtersList = []
	model = ""
	paramsList = []

	#various flags to deal with the evil format
	photos = False
	summary = False
	verbose = False
	stage = 0 ## 0 - daughters, 1 - PSV/model, 2 - params
	semicolonDetected = False

	#precheck for a semicolon to save ourselves a bit of work
	for word in words:
	if word[-1] == ';':
	semicolonDetected = True
	break

	if not semicolonDetected: #we're missing some of this line so wait til we have it all
	previousLine = line
	getMore = True
	continue

	semicolonDetected = False

	for x in range(1,len(words)):
	if not semicolonDetected and words[x][-1] == ';':
	semicolonDetected = True
	words[x] = words[x][:-1]

	if stage == 0:
	allowed = set(allowedParticles)
	if words[x] in allowed:
	daughtersList.append(words[x])
	else:
	stage = 1 #fall through into stage 1
	if stage == 1:
	if words[x] == "PHOTOS":
	photos = True
	elif words[x] == "SUMMARY":
	summary = True
	elif words[x] == "VERBOSE":
	verbose = True
	else:
	model = words[x]
	stage = 2 #don't fall through on this lap
	elif stage == 2:
	paramsList.append(words[x])

	if semicolonDetected:
	if len(words) > x+1:
	line = " ".join(words[x+1:])
	else:
	getMore = True
	break

	daughters = " ".join(daughtersList)
	params = " ".join(paramsList)

	toWrite = "\t\t<channel br=\""+br+"\" daughters=\""+daughters+"\" model=\""+model
	if params:
	toWrite += "\" params=\""+params
	if photos:
	toWrite += "\" photos=\"true"
	if summary:
	toWrite += "\" summary=\"true"
	if verbose:
	toWrite += "\" verbose=\"true"
	toWrite += "\"/>\n"
	fh2.write(toWrite)
	continue
	#are we currently parsing a removeDecay?
	if inRemoveDecay:
	if words[0] == "Enddecay":
	fh2.write("\t</removeDecay>\n")
	inRemoveDecay = False
	if len(words) > 1:
	line = " ".join(words[1:])
	else:
	getMore = True
	else:
	semicolonDetected = False
	daughtersList = []
	#precheck for a semicolon to save ourselves a bit of work
	for word in words:
	if word[-1] == ';':
	semicolonDetected = True
	break

	if not semicolonDetected: #we're missing some of this line so wait til we have it all
	previousLine = line
	getMore = True
	continue

	for x in range(len(words)):
	if words[x][-1] == ';':
	daughtersList.append(words[x][:-1])
	if len(words) > x+1:
	print words[x+1:]
	line = " ".join(words[x+1:])
	else:
	getMore = True
	break
	else:
	daughtersList.append(words[x])
	daughters = " ".join(daughtersList)
	fh2.write("\t\t<channel daughters=\""+daughters+"\"/>\n");
	continue
	#otherwise lets figure out what this line does!
	#######DECAY##################
	if words[0] == "Decay":
	if len(words) < 2:
	previousLine = line
	getMore = True
	continue
	countDec += 1
	parent = words[1]
	fh2.write("\t<decay name=\""+parent+"\">\n")
	if len(words) > 2:
	line = " ".join(words[2:])
	else:
	getMore = True
	inDecay = True
	#######ALIAS##################
	elif words[0] == "Alias":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	countAlias += 1
	alias = words[1]
	particle = words[2]
	fh2.write("\t<alias name=\""+alias+"\" particle=\""+particle+"\"/>\n")
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	allowedParticles.append(alias)
	#######MODELALIAS#############
	elif words[0] == "ModelAlias":
	semicolonDetected = False

	#precheck for a semicolon to save ourselves a bit of work
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	for word in words[1:]:
	if word[-1] == ';':
	semicolonDetected = True
	break

	if not semicolonDetected: #we're missing some of this line so wait til we have it all
	previousLine = line
	getMore = True
	continue

	countModelAlias += 1
	alias = words[1]
	paramsList = []
	if words[2][-1] == ';':
	model = words[2][:-1]
	else:
	model = words[2]
	for x in range(3,len(words)):
	if word[x][-1] == ';':
	paramsList.append(word[x][:-1])
	if len(words) > x+1:
	line = " ".join(word[x+1:])
	else:
	getMore = True
	break
	else:
	paramsList.append(word[x])
	params = " ".join(paramsList)
	fh2.write("\t<modelAlias name=\""+name+"\" model=\""+value+"\" params=\""+params+"\"/>\n")
	#######DEFINE#################
	elif words[0] == "Define":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	countDef += 1
	name = words[1]
	value = words[2]
	fh2.write("\t<define name=\""+name+"\" value=\""+value+"\"/>\n")
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######CHARGECONJ#############
	elif words[0] == "ChargeConj":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	countConj += 1
	particle = words[1]
	conjugate = words[2]
	fh2.write("\t<chargeConj particle=\""+particle+"\" conjugate=\""+conjugate+"\"/>\n")
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######CDECAY#################
	elif words[0] == "CDecay":
	if len(words) < 2:
	previousLine = line
	getMore = True
	continue
	countConjDecay += 1
	particle = words[1]
	fh2.write("\t<conjDecay particle=\""+particle+"\"/>\n")
	if len(words) > 2:
	line = " ".join(words[2:])
	else:
	getMore = True
	#######LINESHAPEPW############
	elif words[0] == "SetLineshapePW":
	if len(words) < 5:
	previousLine = line
	getMore = True
	continue
	countLineShapePW += 1
	parent = words[1]
	daug1 = words[2]
	daug2 = words[3]
	pw = words[4]
	fh2.write("\t<lineShapePW parent=\""+parent+"\" daug1=\""+daug1+"\" daug2=\""+daug2+"\" pw=\""+pw+"\"/>\n")
	if len(words) > 5:
	line = " ".join(words[5:])
	else:
	getMore = True
	#######PHOTOS#################
	elif words[0] == "yesPhotos":
	countPhotos += 1
	fh2.write("\t<photos usage=\"always\"/>\n")
	if len(words) > 1:
	line = " ".join(words[1:])
	else:
	getMore = True
	elif words[0] == "noPhotos":
	countPhotos += 1
	fh2.write("\t<photos usage=\"never\"/>\n")
	if len(words) > 1:
	line = " ".join(words[1:])
	else:
	getMore = True
	elif words[0] == "normalPhotos":
	countPhotos += 1
	fh2.write("\t<photos usage=\"normal\"/>\n")
	if len(words) > 1:
	line = " ".join(words[1:])
	else:
	getMore = True
	#######PARTICLE###############
	elif words[0] == "Particle":
	if len(words) < 4:
	previousLine = line
	getMore = True
	continue
	particle = words[1]
	mass = words[2]
	width = words[3]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["mass"] = mass
	particleDatum["width"] = width
	particleData[particle] = particleDatum
	if len(words) > 4:
	line = " ".join(words[4:])
	else:
	getMore = True
	#######CHANGEMASSMIN##########
	elif words[0] == "ChangeMassMin":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	particle = words[1]
	massMin = words[2]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["massMin"] = massMin
	particleData[particle] = particleDatum
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######CHANGEMASSMAX##########
	elif words[0] == "ChangeMassMax":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	particle = words[1]
	massMax = words[2]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["massMax"] = massMax
	particleData[particle] = particleDatum
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######BIRTHFACTOR############
	elif words[0] == "IncludeBirthFactor":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	particle = words[1]
	birthFactor = words[2]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["birthFactor"] = birthFactor
	particleData[particle] = particleDatum
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######DECAYFACTOR############
	elif words[0] == "IncludeDecayFactor":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	particle = words[1]
	decayFactor = words[2]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["decayFactor"] = decayFactor
	particleData[particle] = particleDatum
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######BLATTWEISSKOPF#########
	elif words[0] == "BlattWeisskopf":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	particle = words[1]
	blattWeisskopf = words[2]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["blattWeisskopf"] = blattWeisskopf
	particleData[particle] = particleDatum
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######BLATTWEISSKOPFBIRTH####
	elif words[0] == "BlattWeisskopfBirth":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	particle = words[1]
	blattWeisskopf = words[2]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["blattWeisskopfBirth"] = blattWeisskopf
	particleData[particle] = particleDatum
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######LSNONRELBW#############
	elif words[0] == "LSNONRELBW":
	if len(words) < 2:
	previousLine = line
	getMore = True
	continue
	particle = words[1]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["lineShape"] = "NONRELBW"
	particleData[particle] = particleDatum
	if len(words) > 2:
	line = " ".join(words[2:])
	else:
	getMore = True
	#######LSFLAT#################
	elif words[0] == "LSFLAT":
	if len(words) < 2:
	previousLine = line
	getMore = True
	continue
	particle = words[1]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["lineShape"] = "FLAT"
	particleData[particle] = particleDatum
	if len(words) > 2:
	line = " ".join(words[2:])
	else:
	getMore = True
	#######LSMANYDELTAFUNC########
	elif words[0] == "LSMANYDELTAFUNC":
	if len(words) < 2:
	previousLine = line
	getMore = True
	continue
	particle = words[1]

	if particle in particleData:
	particleDatum = particleData[particle]
	else:
	particleDatum = {}
	particleDatum["lineShape"] = "MANYDELTAFUNC"
	particleData[particle] = particleDatum
	if len(words) > 2:
	line = " ".join(words[2:])
	else:
	getMore = True
	#######COPYDECAY##############
	elif words[0] == "CopyDecay":
	if len(words) < 3:
	previousLine = line
	getMore = True
	continue
	countCopyDec += 1
	particle = words[1]
	copy = words[2]
	fh2.write("\t<copyDecay particle=\""+particle+"\" copy=\""+copy+"\"/>\n")
	if len(words) > 3:
	line = " ".join(words[3:])
	else:
	getMore = True
	#######REMOVEDECAY############
	elif words[0] == "RemoveDecay":
	if len(words) < 2:
	previousLine = line
	getMore = True
	continue
	countRemoveDec += 1
	parent = words[1]
	fh2.write("\t<removeDecay particle=\""+parent+"\">\n")
	if len(words) > 2:
	line = " ".join(words[2:])
	else:
	getMore = True
	inRemoveDecay = True
	#######PYTHIA6################
	elif words[0] == "JetSetPar":
	if len(words) < 2:
	previousLine = line
	getMore = True
	continue
	s1 = words[1].find("(")
	s2 = words[1].find(")")
	s3 = words[1].find("=")
	if s1 == -1 or s2 == -1 or s3 == -1:
	countBad += 1
	print "bad line: "+words[0]+" "+words[1]+" copied as comment, please fix manually!\n"
	fh2.write("\t<!--TODO "+words[0]+" "+words[1]+" -->\n")
	else:
	countPythia6 += 1
	fh2.write("\t<pythia6Param generator=\"BOTH\" module=\""+ words[1][:s1] +"\" param=\""+ words[1][s1+1:s2] +"\" value=\""+ words[1][s3+1:] +"\"/>\n")
	module = words[1].split("(")[0]
	if len(words) > 2:
	line = " ".join(words[2:])
	else:
	getMore = True
	#######END####################
	elif words[0] == "End":
	for particle in particleData.keys():
	countParticle += 1
	mass = particleData[particle].get("mass","")
	width = particleData[particle].get("width","")
	massMax = particleData[particle].get("massMax","")
	massMin = particleData[particle].get("massMin","")
	birthFactor = particleData[particle].get("birthFactor","")
	decayFactor = particleData[particle].get("decayFactor","")
	lineShape = particleData[particle].get("lineShape","")
	blattWeisskopf = particleData[particle].get("blattWeisskopf","")
	blattWeisskopfBirth = particleData[particle].get("blattWeisskopfBirth","")
	fixLS = particleData[particle].get("fixLS","")

	toWrite = "<particle name=\""+particle+"\""
	if mass:
	toWrite += " mass=\""+mass+"\""
	if width:
	toWrite += " width=\""+width+"\""
	if massMax:
	toWrite += " massMax=\""+massMax+"\""
	if massMin:
	toWrite += " massMin=\""+massMin+"\""
	if birthFactor:
	toWrite += " includeBirthFactor=\""+birthFactor+"\""
	if decayFactor:
	toWrite += " includeDecayFactor=\""+decayFactor+"\""
	if lineShape:
	toWrite += " lineShape=\""+lineShape+"\""
	if blattWeisskopf:
	toWrite += " blattWeisskopfFactor=\""+blattWeisskopf+"\""
	if blattWeisskopfBirth:
	toWrite += " blattWeisskopfBirth=\""+blattWeisskopfBirth+"\""
	toWrite += "/>\n"
	fh2.write(toWrite)
	fh2.write("</data>")
	break
	else:
	countBad += 1
	print "bad line: "+line+"copied as comment, please fix manually!\n"
	fh2.write("<!--TODO "+line[:-1]+"-->\n")
	getMore = True
	if comments:
	print str(countComment)+" commented lines copied without modification"
	else:
	print str(countComment)+" commented lines ignored"
	print str(count)+" other lines converted including:"
	print str(countDec)+" decays"
	print str(countParticle)+" modified particles"
	print str(countAlias)+" aliases"
	print str(countModelAlias)+" model aliases"
	print str(countDef)+" definitions"
	print str(countConj)+" conjugates"
	print str(countConjDecay)+" conjugate decays"
	print str(countLineShapePW)+" line shape PWs"
	print str(countPhotos)+" PHOTOS lines"
	print str(countCopyDec)+" copied decays"
	print str(countRemoveDec)+" removed decays"
	print str(countPythia6)+" pythia commands"
	print str(countBad)+" bad lines!"

	fh1.close()
	fh2.close()

	##################
	args = sys.argv
	extraFiles = []
	if len(args) == 1:
	inFile = "DECAY.DEC"
	outFile = "DECAY.XML"
	elif len(args) == 2:
	inFile = args[1]
	outFile = inFile.rsplit(".",1)[0]+".XML"
	elif len(args) == 3:
	inFile = args[1]
	outFile = args[2]
	else:
	inFile = args[1]
	outFile = args[2]
	extraFiles = args[3:]

	main(inFile,outFile,extraFiles)

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