#!/usr/bin/python3

# http://www.w3.org/TR/xml11/#NT-NameStartChar
#	NameStartChar	   ::=   	":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | 
#                               [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | 
#                               [#x37F-#x1FFF] | [#x200C-#x200D] | 
#                               [#x2070-#x218F] | [#x2C00-#x2FEF] | 
#                               [#x3001-#xD7FF] | [#xF900-#xFDCF] | 
#                               [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
#   NameChar	   ::=   	NameStartChar | "-" | "." | [0-9] | #xB7 | 
#                           [#x0300-#x036F] | [#x203F-#x2040]
# \uxxxx 	Character with 16-bit hex value xxxx (Unicode only) 	(1)
#\Uxxxxxxxx 	Character with 32-bit hex value xxxxxxxx (Unicode only)
#


def isValidNameStartChar(c):
    if c == ':': return True
    return False

def isValidNameChar(c):
    if isValidNameStartChar(c):
        return True
        
    return False

def isValidXmlName(name):
    
    if name is None:
        return False
    
    name = str(name)
    
    if len(name) == 0:
        return False
        
    if not isValidNameStartChar(name[0]):
        return False;
    
    for c in name[1:]:
        if not isValidNameChar(c):
            return False
    
    return True