def insert_inst_into_980(curdir,uid):
	"""collection handling for institutes"""
	user_groups = get_usergroups(uid)
	if check_field_exists(curdir,"hgf_9201_"):
		if read_file(curdir,"hgf_9201_") == "[]": remove_file(curdir,"hgf_9201_") # delete file in case of empty sequence! TODO: this should not happen and has to be fixed in hgfInstitutes.js

	if not check_field_exists(curdir,"hgf_9201_"): #make sure that we have at least one institute
		if str(uid) == "1": return #do not add institutes for admin
		user_insts = extract_user_institutes("0",user_groups)
		if user_insts == []:
			email_txt = "%s is not assigned to any institute. This email was generated from Covert_hgf_fields and function insert_inst_into_980" %get_recordid(curdir)
			send_email(CFG_SITE_ADMIN_EMAIL, CFG_SITE_ADMIN_EMAIL, "ERROR: no institute assigned", email_txt,header="",html_header="")
			return #this should not happen!
		jsondict = user_insts   #add institute even if no institute chosen to be inserted into 980
	else:
		jsondict = read_json(curdir,"hgf_9201_")
	inst_list = []
	list_980 = read_json(curdir,"hgf_980__")
	
	for inst in jsondict:
		if {"a":inst["0"]} in list_980: continue
		inst_list.append({"a":inst["0"]})
	if inst_list == []: return
	list_980 += inst_list

	#check if users institut in 980, if not take it from user_info
	if str(uid) == "1": pass # no adding of institutes into 980  for admin
	else:
		str_list_980 = [str(i) for i in list_980] #convert list with dicts into list with str(dicts), because python sets use list with strings
		intersection_groups = set(str_list_980) & set(user_groups) # user institute not in 980 yet
		intersection_vdb = set(["{'a': 'VDB'}", "{'a': 'VDBRELEVANT'}","{'a': 'VDBINPRINT'}"]) & set(str_list_980) # not vdb_relevant

		if intersection_groups == set([]) and  intersection_vdb == set([]): # # prevent submitting vdb irrelevant stuff for another institute
			list_980 += extract_user_institutes("a",user_groups)
	write_json(curdir,"hgf_980__",list_980)
def insert_date(curdir,fielddate,sdate,edate):
	"""preprocessing date into 245$f
	fielddate can be hgf_245__f, hgf_1112_d
	sdate: hgf_245__fs or hgf_1112_dcs
	edate: hgf_245__fe or hgf_1112_dce
	"""
	if check_field_exists(curdir,sdate):
		hgf_sdate = read_file(curdir,sdate)
	else: hgf_sdate = ""
	if check_field_exists(curdir,edate):
		hgf_edate = read_file(curdir,edate)
	else: hgf_edate = ""
	if (hgf_sdate == "" and hgf_edate == "" ): return ""
	else: datestring = hgf_sdate + " - " + hgf_edate
	write_file(curdir,fielddate,datestring)
	remove_file(curdir, sdate)
	remove_file(curdir, edate)
def handle_url(curdir):
	if check_field_exists(curdir,"hgf_8564_"): 
		remove_file(curdir,"hgf_8564_u")
		
		jsondict_list = read_json(curdir,"hgf_8564_")
		#only one URL can be submitted/modified. bibedit urls die ;)
		for i in jsondict_list:
			if not i.has_key("u"): continue # no subfield u detected
			if CFG_SITE_URL in i["u"]: continue # skip internal file
			write_file(curdir,"hgf_8564_u",i["u"])
			remove_file(curdir,"hgf_8564_")
			return # write only one URL
	if check_field_exists(curdir,"hgf_8564_u"):
		text = read_file(curdir,"hgf_8564_u")
		if CFG_SITE_URL in text: remove_file(curdir,"hgf_8564_u") #skip internal file